Cut out all of the old texture environment code and rewrote it from

scratch.  There were just too many cut-and-paste errors in the code,
and it was too hard to follow.

This fixes Mesa bugzilla #1508.  #1509 is probably also fixed, but
I'd like to do some more testing before I close that particular bug.
Additionally, this cuts almost 4,600 lines of code from the driver.

diff --git a/src/mesa/drivers/dri/unichrome/Makefile b/src/mesa/drivers/dri/unichrome/Makefile
index 1d43e5d8b90ecb3c9a08f44783ad716c98e24a58..baf1fe47b7e005980e04d889f7955ad3049eb9c3 100644 (file)
--- a/src/mesa/drivers/dri/unichrome/Makefile
+++ b/src/mesa/drivers/dri/unichrome/Makefile
@@ -30,6 +30,7 @@ DRIVER_SOURCES = \
        via_texstate.c \
        via_tris.c \
        via_vb.c \
+       via_texcombine.c \
        xf86drmVIA.c
 
 C_SOURCES = \

diff --git a/src/mesa/drivers/dri/unichrome/via_context.h b/src/mesa/drivers/dri/unichrome/via_context.h
index 4ac3a8cfa6efc52b4671b9d866d267e6256b2b62..5efd9a02260361e967d72cb69f9ae43467b36ae2 100644 (file)
--- a/src/mesa/drivers/dri/unichrome/via_context.h
+++ b/src/mesa/drivers/dri/unichrome/via_context.h
@@ -451,6 +451,9 @@ extern void viaXMesaSetFrontClipRects(viaContextPtr vmesa);
 extern void viaReAllocateBuffers(GLframebuffer *drawbuffer);
 extern void viaXMesaWindowMoved(viaContextPtr vmesa);
 
+extern void viaTexCombineState(viaContextPtr vmesa,
+    const struct gl_tex_env_combine_state * combine, unsigned unit );
+
 #define SUBPIXEL_X -.5
 #define SUBPIXEL_Y -.5
 

diff --git a/src/mesa/drivers/dri/unichrome/via_state.c b/src/mesa/drivers/dri/unichrome/via_state.c
index bc7b713001d0978db5132308d7206b2c1ce67629..f5b97de52c7aacf9178d2d7e2fed983750353bbd 100644 (file)
--- a/src/mesa/drivers/dri/unichrome/via_state.c
+++ b/src/mesa/drivers/dri/unichrome/via_state.c
@@ -46,7 +46,6 @@
 
 #include "tnl/t_pipeline.h"
 
-/*#define EXPERIMENTAL_COMBINE_MODE*/
 
 static GLuint ROP[16] = {
     HC_HROP_BLACK,    /* GL_CLEAR           0                          */
@@ -547,38 +546,13 @@ get_wrap_mode( GLenum sWrap, GLenum tWrap )
 }
 
 
-/**
- * Convert the shift value for the \c GL_COMBINE post-scale to the hardware
- * bits.  It would have been easier if the values used by the hardware matched
- * the shift counts, but they don't.  A simple table look-up does the trick.
- * 
- * \param c  Shift count for RGB (color) post-scale.
- * \param a  Shift count for alpha post-scale.
- *
- * \returns Bits for \c HTXnTBLCop to set the scale factor.
- */
-
-__inline__ unsigned
-get_combine_shift_factor( unsigned c, unsigned a )
-{
-    static const unsigned c_shift_table[3] = {
-       HC_HTXnTBLCshift_No, HC_HTXnTBLCshift_1, HC_HTXnTBLCshift_2
-    };
-    static const unsigned  a_shift_table[3] = {
-       HC_HTXnTBLAshift_No, HC_HTXnTBLAshift_1, HC_HTXnTBLAshift_2
-    };
-
-    return c_shift_table[ c ] | a_shift_table[ a ];
-}
-
-
 void viaChooseTextureState(GLcontext *ctx) 
 {
     viaContextPtr vmesa = VIA_CONTEXT(ctx);
     struct gl_texture_unit *texUnit0 = &ctx->Texture.Unit[0];
     struct gl_texture_unit *texUnit1 = &ctx->Texture.Unit[1];
     /*=* John Sheng [2003.7.18] texture combine *=*/
-    GLboolean AlphaCombine[3];
+
 #ifdef DEBUG
     if (VIA_DEBUG) fprintf(stderr, "%s - in\n", __FUNCTION__);    
 #endif    
@@ -609,7 +583,7 @@ void viaChooseTextureState(GLcontext *ctx)
         if (texUnit0->_ReallyEnabled) {
             struct gl_texture_object *texObj = texUnit0->_Current;
             struct gl_texture_image *texImage = texObj->Image[0][0];
-            GLint r, g, b, a;
+
 #ifdef DEBUG
            if (VIA_DEBUG) fprintf(stderr, "texUnit0->_ReallyEnabled\n");    
 #endif            
@@ -670,2318 +644,7 @@ void viaChooseTextureState(GLcontext *ctx)
            if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode %x\n",texUnit0->EnvMode);    
 #endif
 
-            switch (texUnit0->EnvMode) {
-#ifndef EXPERIMENTAL_COMBINE_MODE
-            case GL_MODULATE:
-               switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = At*Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Adif | HC_HTXnTBLAb_TOPA |
-                        HC_HTXnTBLAb_Atex | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    /* C = Lt*Cf, A = Af
-                     * RGB part.
-                     * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    /* C = Lt*Cf, A = At*Af
-                     * RGB part.
-                     * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    /* C = It*Cf, A = It*Af
-                     * RGB part.
-                     * Ca = It, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = It, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    break;
-                case GL_RGB:
-                    /* C = Ct*Cf, A = Af
-                     * RGB part.
-                     * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_MODULATE: GL_RGB\n");    
-#endif
-                    break;
-                case GL_RGBA:
-                    /* C = Ct*Cf, A = At*Af
-                     * RGB part.
-                     * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                       HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias
-                       | HC_HTXnTBLAshift_No;
-                    
-                   vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_MODULATE: GL_RGBA\n");        
-#endif
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = At*Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex | HC_HTXnTBLAb_TOPA |
-                            HC_HTXnTBLAb_Adif | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        /* C = Lt*Cf, A = Af
-                         * RGB part.
-                         * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        /* C = Lt*Cf, A = At*Af
-                         * RGB part.
-                         * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        /* C = It*Cf, A = It*Af
-                         * RGB part.
-                         * Ca = It, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = It, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    case GL_RGB:
-                        /* C = Ct*Cf, A = Af
-                         * RGB part.
-                         * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        /* C = Ct*Cf, A = At*Af
-                         * RGB part.
-                         * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Dif | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_DECAL:
-               switch (texImage->Format) {
-                case GL_ALPHA:
-                case GL_LUMINANCE:
-                case GL_LUMINANCE_ALPHA:
-                case GL_INTENSITY:
-                    /* Undefined.
-                     */
-                    break;
-                case GL_RGB:
-                    /* C = Ct, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_DECAL: GL_RGB\n");
-#endif
-                    break;
-                case GL_RGBA:
-                    /* C = (1-At)*Cf+At*Ct, A = Af --> At*(Ct-Cf)+Cf
-                     * RGB part.
-                     * Ca = At, Cb = Ct, Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Atex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_Tex |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_DECAL: GL_RGBA\n");
-#endif
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                    case GL_LUMINANCE:
-                    case GL_LUMINANCE_ALPHA:
-                    case GL_INTENSITY:
-                        /* Undefined.
-                         */
-                        break;
-                    case GL_RGB:
-                        /* C = Ct, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                       if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_COLOR_INDEX: GL_RGB\n");    
-#endif
-                        break;
-                    case GL_RGBA:
-                        /* C = (1-At)*Cf+At*Ct, A = Af --> At*(Ct-Cf)+Cf
-                         * RGB part.
-                         * Ca = At, Cb = Ct, Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Atex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_Tex |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                       if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_COLOR_INDEX: GL_RGBA\n");    
-#endif
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_BLEND:
-               switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    /* C = (1-Lt)*Cf+Lt*Cc, A = Af --> Lt*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    /* C = (1-Lt)*Cf+Lt*Cc, A = At*Af --> Lt*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                    /* C = (1-It)*Cf+It*Cc, A = (1-It)*Af+It*Ac
-                     * --> It*(Cc-Cf)+Cf, It*(Ac-Af)+Af
-                     * RGB part.
-                     * Ca = It, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = It, Ab = Ac(Reg), Cop = -, Ac = Af, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = (a << 8);
-                    break;
-                case GL_RGB:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                    /* C = (1-Ct)*Cf+Ct*Cc, A = Af --> Ct*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_BLEND: GL_RGB\n");    
-#endif
-                    break;
-                case GL_RGBA:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                    /* C = (1-Ct)*Cf+Ct*Cc, A = At*Af --> Ct*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_BLEND: GL_RGBA\n");    
-#endif
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        /* C = (1-Lt)*Cf+Lt*Cc, A = Af --> Lt*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        /* C = (1-Lt)*Cf+Lt*Cc, A = At*Af --> Lt*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        /* C = (1-It)*Cf+It*Cc, A = (1-It)*Af+It*Ac
-                         * --> It*(Cc-Cf)+Cf, It*(Ac-Af)+Af
-                         * RGB part.
-                         * Ca = It, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = It, Ab = Ac(Reg), Cop = -, Ac = Af, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = (a << 8);
-                        break;
-                    case GL_RGB:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        /* C = (1-Ct)*Cf+Ct*Cc, A = Af --> Ct*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        /* C = (1-Ct)*Cf+Ct*Cc, A = At*Af --> Ct*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        vmesa->regHTXnTBLRFog_0 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_REPLACE:
-               switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    /* C = Lt, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    /* C = Lt, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    /* C = It, A = It
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = It, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = It, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    break;
-                case GL_RGB:
-                    /* C = Ct, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_REPLACE: GL_RGB\n");    
-#endif
-                    break;
-                case GL_RGBA:
-                    /* C = Ct, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-#ifdef DEBUG
-                   if (VIA_DEBUG) fprintf(stderr, "texUnit0->EnvMode: GL_REPLACE: GL_RGBA\n");    
-#endif
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        /* C = Lt, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        /* C = Lt, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        /* C = It, A = It
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = It, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = It, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_RGB:
-                        /* C = Ct, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        /* C = Ct, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_0 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-#else
-           default:
-#endif
-           /*=* John Sheng [2003.7.18] texture combine *=*/
-           case GL_COMBINE:
-               switch (texUnit0->_CurrentCombine->ModeRGB) {
-               case GL_REPLACE:
-                   vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                     HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                     HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                     HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-
-                   switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                   case GL_TEXTURE:
-                       switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                       case GL_SRC_COLOR:  
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex;
-                           break;
-                       case GL_ONE_MINUS_SRC_COLOR:
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Tex;
-                           break;
-                       case GL_SRC_ALPHA:  
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Atex; 
-                           break;
-                       case GL_ONE_MINUS_SRC_ALPHA:
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Atex;
-                           break;
-                       }
-                       break;
-                   case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                       switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                       case GL_SRC_COLOR:  
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_HTXnTBLRC; 
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                           break;
-                       case GL_ONE_MINUS_SRC_COLOR:
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                           break;
-                       case GL_SRC_ALPHA:
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                           break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                            break;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                       switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                        case GL_SRC_COLOR:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif;
-                            break;
-                        case GL_ONE_MINUS_SRC_COLOR:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Dif;
-                            break;
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Adif;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Adif;
-                            break;
-                        }
-                        break;
-                    case GL_PREVIOUS :
-                        switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                        case GL_SRC_COLOR:  
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif;
-                            break;
-                        case GL_ONE_MINUS_SRC_COLOR:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Dif;
-                            break;
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Adif;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Adif;
-                            break;
-                        }
-                        break;
-                    }
-                    break;
-
-                case GL_MODULATE: {
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                     HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                     HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-
-                    switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex;
-                        }
-                        else {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCa_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                        }
-                        break;
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                       }
-                       break;
-                    }
-                   switch (texUnit0->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                       if (AlphaCombine[1]==0) {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                       else {
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                       }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                       break;
-                    case GL_PREVIOUS :
-                       if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                       }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                       }
-                       break;
-                   }
-                   break;
-               }
-               case GL_ADD:
-                case GL_SUBTRACT :
-                   if (texUnit0->_CurrentCombine->ModeRGB==GL_ADD) {
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                    }
-                   else {
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                   }
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK | HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCa_0 = ( 255<<16 | 255<<8 |255 );
-                    switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                       AlphaCombine[0]=0;
-                        break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_TOPC; 
-                       AlphaCombine[1]=0;
-                       break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_InvTOPC;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_TOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_InvTOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                   }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                       }
-                       break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                       }
-                       break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_HTXnTBLRC;
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCc_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCc_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Adif;
-                        }
-                       break;
-                   }
-                    break;
-                case GL_ADD_SIGNED :
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub;
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                       HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC|
-                       HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_HTXnTBLRC;
-                   vmesa->regHTXnTBLRCa_0 = ( 255<<16 | 255<<8 |255 );
-                    vmesa->regHTXnTBLRCc_0 = ( 128<<16 | 128<<8 |128 );
-                    switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                       vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                       AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                        break;
-                    }
-                   switch (texUnit0->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Atex; 
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_HTXnTBLRC; 
-                       if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCbias_0 = (r << 16) | (g << 8) | b;
-                        }
-                       else {
-                            vmesa->regHTXnTBLRCbias_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Dif; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Adif;
-                        }
-                        break;
-                    }
-                   break;
-                case GL_INTERPOLATE :
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub;
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_TOPC; 
-                       AlphaCombine[0]=0;
-                       break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_TOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_InvTOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_TOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=1;
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_InvTOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandRGB[2]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[2]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_InvTOPC;
-                        AlphaCombine[2]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_TOPC;
-                        AlphaCombine[2]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_InvTOPC;
-                        AlphaCombine[2]=1;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                       if (AlphaCombine[0]==0) {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                        }
-                        else {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                       break;
-                   case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Tex; 
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Tex;
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Atex;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_HTXnTBLRC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCc_0 = (r << 16) | (g << 8) | b;
-                            vmesa->regHTXnTBLRCbias_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCc_0 = (a << 16) | (a << 8) | a;
-                            vmesa->regHTXnTBLRCbias_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Dif; 
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Dif;
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Adif;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Adif;
-                        }
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceRGB[2]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCa_0 = (a << 16) | (a << 8) | a;
-                        }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                        }
-                        break;
-                    }
-                    break;
-                }
-               switch (texUnit0->_CurrentCombine->ModeA) {
-                case GL_REPLACE:
-                    switch (texUnit0->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                       case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_Atex;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            vmesa->regHTXnTBLRFog_0 = a;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            vmesa->regHTXnTBLRFog_0 = a;
-                            break;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                           HC_HTXnTBLAbias_Adif;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_Adif;
-                           vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                       }
-                   break;
-                    }
-                    break;
-                case GL_MODULATE:
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                     HC_HTXnTBLAbias_HTXnTBLRAbias;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                   vmesa->regHTXnTBLRAa_0= 0x0;
-                    switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_TOPA; 
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Atex; 
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a<<16;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Adif; 
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a<<8;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    break;
-                case GL_ADD:
-                case GL_SUBTRACT :
-                    if(texUnit0->_CurrentCombine->ModeA==GL_ADD) {
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                   }
-                   else {
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                    }
-                    vmesa->regHTXnTBLRFog_0 = 0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA;
-                    vmesa->regHTXnTBLRAa_0 = 0x0 |  ( 255<<16 );
-                    switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                   switch (texUnit0->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_TOPA;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_InvTOPA;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Adif;
-                        break;
-                    }
-                    break;
-                case GL_ADD_SIGNED :
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA|
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLRAa_0 = ( 255<<16 | 0<<8 |128 );
-                    switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Inv;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[1]) {
-                   case GL_TEXTURE:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Atex; 
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_HTXnTBLRAbias; 
-                        vmesa->regHTXnTBLRFog_0 |= a;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Adif;
-                        break;
-                    }
-                    break;
-               case GL_INTERPOLATE :
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 =  0x0;
-                    switch (texUnit0->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAc_TOPA;
-                        break;
-                   case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAc_InvTOPA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Inv;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->OperandA[2]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAa_TOPA;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAa_InvTOPA;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit0->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Atex;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_HTXnTBLRA;
-                       vmesa->regHTXnTBLRAa_0 |= a;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_HTXnTBLRAbias;
-                        vmesa->regHTXnTBLRFog_0 |= a;
-                        break;
-                   case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Adif;
-                       vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Adif;
-                        break;
-                   }
-                    switch (texUnit0->_CurrentCombine->SourceA[2]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 16);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                   case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Adif;
-                        break;
-                   }
-                   break;
-               case GL_DOT3_RGB :
-               case GL_DOT3_RGBA :
-                   break;
-               }
-
-               vmesa->regHTXnTBLCop_0 |= 
-                 get_combine_shift_factor(texUnit0->_CurrentCombine->ScaleShiftRGB,
-                                          texUnit0->_CurrentCombine->ScaleShiftA);
-
-               break;
-#ifndef EXPERIMENTAL_COMBINE_MODE
-       /*=* John Sheng [2003.7.18] texture add *=*/
-        case GL_ADD:
-            switch(texImage->Format) {
-            case GL_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Adif | HC_HTXnTBLAb_TOPA |
-                    HC_HTXnTBLAb_Atex | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_LUMINANCE:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-            case GL_LUMINANCE_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_INTENSITY:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Atex |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-               /*=* John Sheng [2003.7.18] texenv *=*/
-               /*vmesa->regHTXnTBLRAa_0 = 0x0;*/
-                vmesa->regHTXnTBLRAa_0 = (255<<16) | (255<<8) | 255;;
-                vmesa->regHTXnTBLRFog_0 = 0x0 | 255<<16;
-                break;
-            case GL_RGB:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-            case GL_RGBA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_COLOR_INDEX:
-                switch(texObj->Palette.Format) {
-                case GL_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Adif | HC_HTXnTBLAb_TOPA |
-                    HC_HTXnTBLAb_Atex | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                case GL_LUMINANCE:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-                case GL_LUMINANCE_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                case GL_INTENSITY:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Atex |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0 | 255<<16;
-                break;
-                case GL_RGB:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-                case GL_RGBA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                }
-                break;
-            }
-            break;
-       /*=* John Sheng [2003.7.18] texture dot3 *=*/
-           case GL_DOT3_RGB :
-           case GL_DOT3_RGBA :
-               vmesa->regHTXnTBLCop_0 = HC_HTXnTBLDOT4 | HC_HTXnTBLCop_Add | 
-                                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 | 
-                                         HC_HTXnTBLCshift_2 | HC_HTXnTBLAop_Add |
-                                         HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                                       HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | 
-                                       HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                                       HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                                       HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                switch (texUnit0->_CurrentCombine->OperandRGB[0]) {
-                case GL_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                   break;
-                case GL_ONE_MINUS_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                    break;
-                }
-                switch (texUnit0->_CurrentCombine->OperandRGB[1]) {
-                case GL_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                    break;
-                case GL_ONE_MINUS_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                    break;
-                }
-                switch (texUnit0->_CurrentCombine->SourceRGB[0]) {
-                case GL_TEXTURE:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                    break;
-                case GL_CONSTANT :
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                    break;
-               case GL_PRIMARY_COLOR :
-                case GL_PREVIOUS :
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                    break;
-                }
-                switch (texUnit0->_CurrentCombine->SourceRGB[1]) {
-                case GL_TEXTURE:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                    break;
-                case GL_CONSTANT :
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit0->EnvColor[2], b);
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    break;
-                case GL_PRIMARY_COLOR :
-                case GL_PREVIOUS :
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                    break;
-                }
-               break;
-            default:
-               break;
-#endif
-            }
+           viaTexCombineState( vmesa, texUnit0->_CurrentCombine, 0 );
         }
        else {
        /* Should turn Cs off if actually no Cs */
@@ -2990,7 +653,6 @@ void viaChooseTextureState(GLcontext *ctx)
         if (texUnit1->_ReallyEnabled) {
             struct gl_texture_object *texObj = texUnit1->_Current;
             struct gl_texture_image *texImage = texObj->Image[0][0];
-            GLint r, g, b, a;
 
             if (texImage->Border) {
                 FALLBACK(vmesa, VIA_FALLBACK_TEXTURE, GL_TRUE);
@@ -3045,2424 +707,7 @@ void viaChooseTextureState(GLcontext *ctx)
            vmesa->regHTXnMPMD_1 |= get_wrap_mode( texObj->WrapS,
                                                   texObj->WrapT );
 
-            switch (texUnit1->EnvMode) {
-#ifndef EXPERIMENTAL_COMBINE_MODE
-            case GL_MODULATE:
-               switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = At*Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex | HC_HTXnTBLAb_TOPA |
-                        HC_HTXnTBLAb_Acur | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    /* C = Lt*Cf, A = Af
-                     * RGB part.
-                     * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    /* C = Lt*Cf, A = At*Af
-                     * RGB part.
-                     * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    /* C = It*Cf, A = It*Af
-                     * RGB part.
-                     * Ca = It, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = It, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_RGB:
-                    /* C = Ct*Cf, A = Af
-                     * RGB part.
-                     * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_RGBA:
-                    /* C = Ct*Cf, A = At*Af
-                     * RGB part.
-                     * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                        HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                       HC_HTXnTBLAbias_HTXnTBLRAbias
-                       | HC_HTXnTBLAshift_No;
-                    
-                   vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = At*Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex | HC_HTXnTBLAb_TOPA |
-                            HC_HTXnTBLAb_Acur | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        /* C = Lt*Cf, A = Af
-                         * RGB part.
-                         * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        /* C = Lt*Cf, A = At*Af
-                         * RGB part.
-                         * Ca = Lt, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        /* C = It*Cf, A = It*Af
-                         * RGB part.
-                         * Ca = It, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = It, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    case GL_RGB:
-                        /* C = Ct*Cf, A = Af
-                         * RGB part.
-                         * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        /* C = Ct*Cf, A = At*Af
-                         * RGB part.
-                         * Ca = Ct, Cb = Cf, Cop = +, Cc = 0, Cbias = 0, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex | HC_HTXnTBLCb_TOPC |
-                            HC_HTXnTBLCb_Cur | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_DECAL:
-                switch (texImage->Format) {
-                case GL_ALPHA:
-                case GL_LUMINANCE:
-                case GL_LUMINANCE_ALPHA:
-                case GL_INTENSITY:
-                    /* Undefined.
-                     */
-                    break;
-                case GL_RGB:
-                    /* C = Ct, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_RGBA:
-                    /* C = (1-At)*Cf+At*Ct, A = Af --> At*(Ct-Cf)+Cf
-                     * RGB part.
-                     * Ca = At, Cb = Ct, Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Atex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_Tex |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                    case GL_LUMINANCE:
-                    case GL_LUMINANCE_ALPHA:
-                    case GL_INTENSITY:
-                        /* Undefined.
-                         */
-                        break;
-                    case GL_RGB:
-                        /* C = Ct, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        /* C = (1-At)*Cf+At*Ct, A = Af --> At*(Ct-Cf)+Cf
-                         * RGB part.
-                         * Ca = At, Cb = Ct, Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Atex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_Tex |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_BLEND:
-                switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    /* C = (1-Lt)*Cf+Lt*Cc, A = Af --> Lt*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    /* C = (1-Lt)*Cf+Lt*Cc, A = At*Af --> Lt*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                    /* C = (1-It)*Cf+It*Cc, A = (1-It)*Af+It*Ac
-                     * --> It*(Cc-Cf)+Cf, It*(Ac-Af)+Af
-                     * RGB part.
-                     * Ca = It, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = It, Ab = Ac(Reg), Cop = -, Ac = Af, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Acur;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Sub |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = (a << 8);
-                    break;
-                case GL_RGB:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                    /* C = (1-Ct)*Cf+Ct*Cc, A = Af --> Ct*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_RGBA:
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                    /* C = (1-Ct)*Cf+Ct*Cc, A = At*Af --> Ct*(Cc-Cf)+Cf
-                     * RGB part.
-                     * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                    /* Alpha part.
-                     * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    vmesa->regHTXnTBLRFog_1 = 0x0;
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        /* C = (1-Lt)*Cf+Lt*Cc, A = Af --> Lt*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        /* C = (1-Lt)*Cf+Lt*Cc, A = At*Af --> Lt*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Lt, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        /* C = (1-It)*Cf+It*Cc, A = (1-It)*Af+It*Ac
-                         * --> It*(Cc-Cf)+Cf, It*(Ac-Af)+Af
-                         * RGB part.
-                         * Ca = It, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = It, Ab = Ac(Reg), Cop = -, Ac = Af, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Acur;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Sub |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = (a << 8);
-                        break;
-                    case GL_RGB:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        /* C = (1-Ct)*Cf+Ct*Cc, A = Af --> Ct*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        /* C = (1-Ct)*Cf+Ct*Cc, A = At*Af --> Ct*(Cc-Cf)+Cf
-                         * RGB part.
-                         * Ca = Ct, Cb = Cc(Reg), Cop = -, Cc = Cf, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_Tex |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_HTXnTBLRC |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Cur;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Sub |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        vmesa->regHTXnTBLRCb_1 = (r << 16) | (g << 8) | b;
-                        /* Alpha part.
-                         * Aa = At, Ab = Af, Cop = +, Ac = 0, Abias = 0, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Acur |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        vmesa->regHTXnTBLRFog_1 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-            case GL_REPLACE:
-                switch (texImage->Format) {
-                case GL_ALPHA:
-                    /* C = Cf, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_LUMINANCE:
-                    /* C = Lt, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_LUMINANCE_ALPHA:
-                    /* C = Lt, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_INTENSITY:
-                    /* C = It, A = It
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = It, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = It, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_RGB:
-                    /* C = Ct, A = Af
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_RGBA:
-                    /* C = Ct, A = At
-                     * RGB part.
-                     * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                     */
-                    vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                        HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                        HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                        HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                        HC_HTXnTBLCshift_No;
-                    vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                    /* Alpha part.
-                     * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                     */
-                    vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                        HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                        HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLRAa_1 = 0x0;
-                    break;
-                case GL_COLOR_INDEX:
-                    switch (texObj->Palette.Format) {
-                    case GL_ALPHA:
-                        /* C = Cf, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Cf, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Cur |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE:
-                        /* C = Lt, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_LUMINANCE_ALPHA:
-                        /* C = Lt, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Lt, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_INTENSITY:
-                        /* C = It, A = It
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = It, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = It, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_RGB:
-                        /* C = Ct, A = Af
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = Af, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Acur | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    case GL_RGBA:
-                        /* C = Ct, A = At
-                         * RGB part.
-                         * Ca = 0, Cb = 0, Cop = +, Cc = 0, Cbias = Ct, Cshift = No.
-                         */
-                        vmesa->regHTXnTBLCsat_1 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                        vmesa->regHTXnTBLCop_1 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex |
-                            HC_HTXnTBLCshift_No;
-                        vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
-                        /* Alpha part.
-                         * Aa = 0, Ab = 0, Cop = +, Ac = 0, Abias = At, Ashift = No.
-                         */
-                        vmesa->regHTXnTBLAsat_1 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLCop_1 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex | HC_HTXnTBLAshift_No;
-                        vmesa->regHTXnTBLRAa_1 = 0x0;
-                        break;
-                    }
-                    break;
-                }
-                break;
-#else
-           default:
-#endif
-           /*=* John Sheng [2003.7.18] texture combine *=*/
-           case GL_COMBINE:
-               switch (texUnit1->_CurrentCombine->ModeRGB) {
-               case GL_REPLACE:
-                   switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                   case GL_TEXTURE:
-                       switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                       case GL_SRC_COLOR:  
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Tex;
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           break;
-                       case GL_ONE_MINUS_SRC_COLOR:
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Tex;
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           break;
-                       case GL_SRC_ALPHA:  
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Atex; 
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           break;
-                       case GL_ONE_MINUS_SRC_ALPHA:
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Atex;
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           break;
-                       }
-                       break;
-                   case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                       switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                       case GL_SRC_COLOR:  
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_HTXnTBLRC; 
-                        
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                           break;
-                       case GL_ONE_MINUS_SRC_COLOR:
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                           break;
-                       case GL_SRC_ALPHA:  
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                           HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                           vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                           HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                           vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                           break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                           vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                           HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_HTXnTBLRC;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                            break;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                       switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                        case GL_SRC_COLOR:  
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_ONE_MINUS_SRC_COLOR:
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Dif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Adif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Adif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        }
-                        break;
-                    case GL_PREVIOUS :
-                        switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                        case GL_SRC_COLOR:  
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_ONE_MINUS_SRC_COLOR:
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Dif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Adif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                            HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 |
-                            HC_HTXnTBLCb_TOPC | HC_HTXnTBLCb_0 |
-                            HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                            vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                            HC_HTXnTBLCbias_InvCbias | HC_HTXnTBLCbias_Adif;
-                            vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                            break;
-                        }
-                        break;
-                    }
-                    break;
-
-                case GL_MODULATE:
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                        }
-                        else {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCa_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                        }
-                        break;
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                       }
-                       break;
-                    }
-                   switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                       if (AlphaCombine[1]==0) {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                       else {
-                           vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                       }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                       break;
-                    case GL_PREVIOUS :
-                       if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                       }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                       }
-                       break;
-                   }
-                   break;
-               case GL_ADD:
-                case GL_SUBTRACT :
-                   if (texUnit1->_CurrentCombine->ModeRGB==GL_ADD) {
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                    }
-                   else {
-                        vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub |
-                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0;
-                   }
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK | HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCa_0 = ( 255<<16 | 255<<8 |255 );
-                    switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                       AlphaCombine[0]=0;
-                        break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_TOPC; 
-                       AlphaCombine[1]=0;
-                       break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_InvTOPC;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_TOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_InvTOPC;
-                        AlphaCombine[1]=1;
-                        break;
-                   }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                       }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                       }
-                       break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                           vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                       }
-                       break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_HTXnTBLRC;
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCc_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCc_0 = (a << 16) | (a << 8) | a;
-                       }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Adif;
-                        }
-                       break;
-                   }
-                    break;
-                case GL_ADD_SIGNED :
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub;
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                       HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC|
-                       HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_HTXnTBLRC;
-                   vmesa->regHTXnTBLRCa_0 = ( 255<<16 | 255<<8 |255 );
-                    vmesa->regHTXnTBLRCc_0 = ( 128<<16 | 128<<8 |128 );
-                    switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                       vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                       AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                        break;
-                    }
-                   switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Tex; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Atex; 
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_HTXnTBLRC; 
-                       if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLRCbias_0 = (r << 16) | (g << 8) | b;
-                        }
-                       else {
-                            vmesa->regHTXnTBLRCbias_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[1]==0) {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Dif; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Adif;
-                        }
-                        break;
-                    }
-                   break;
-                case GL_INTERPOLATE :
-                    vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Sub;
-                   vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                   switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_TOPC; 
-                       AlphaCombine[0]=0;
-                       break;
-                   case GL_ONE_MINUS_SRC_COLOR:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_TOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCb_InvTOPC; 
-                        AlphaCombine[0]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_TOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_InvTOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_TOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Cbias;
-                        AlphaCombine[1]=1;
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCc_InvTOPC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_InvCbias;
-                        AlphaCombine[1]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[2]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_TOPC; 
-                        AlphaCombine[2]=0;
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_InvTOPC;
-                        AlphaCombine[2]=0;
-                        break;
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_TOPC;
-                        AlphaCombine[2]=1;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCa_InvTOPC;
-                        AlphaCombine[2]=1;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                       if (AlphaCombine[0]==0) {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                        }
-                        else {
-                           vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Atex;
-                        }
-                       break;
-                   case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCb_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Adif;
-                        }
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Tex; 
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Tex;
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Atex;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_HTXnTBLRC;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCc_0 = (r << 16) | (g << 8) | b;
-                            vmesa->regHTXnTBLRCbias_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCc_0 = (a << 16) | (a << 8) | a;
-                            vmesa->regHTXnTBLRCbias_0 = (a << 16) | (a << 8) | a;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Dif; 
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Dif;
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCc_Adif;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLCbias_Adif;
-                        }
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[2]) {
-                    case GL_TEXTURE:
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                        }
-                       else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Atex;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                        }
-                        else {
-                            vmesa->regHTXnTBLRCa_0 = (a << 16) | (a << 8) | a;
-                        }
-                       break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        if (AlphaCombine[0]==0) {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                        }
-                        else {
-                            vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Adif;
-                        }
-                        break;
-                    }
-                    break;
-
-               case GL_DOT3_RGB :
-               case GL_DOT3_RGBA :
-                   vmesa->regHTXnTBLCop_0 = HC_HTXnTBLDOT4 | HC_HTXnTBLCop_Add | 
-                                         HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 | 
-                                          HC_HTXnTBLCshift_2 | HC_HTXnTBLAop_Add |
-                                          HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                    vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                    vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                                           HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | 
-                                           HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                                           HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                                           HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                       break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                    case GL_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                        break;
-                    case GL_ONE_MINUS_SRC_COLOR:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                        vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                        break;
-                   case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                        vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                        break;
-                    }
-                   break;
-                   
-                }
-               switch (texUnit1->_CurrentCombine->ModeA) {
-                case GL_REPLACE:
-                    switch (texUnit1->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                       case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Atex;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_Atex;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        }
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_HTXnTBLRAbias;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            vmesa->regHTXnTBLRFog_0 = a;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            vmesa->regHTXnTBLRFog_0 = a;
-                            break;
-                        }
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                        case GL_SRC_ALPHA:  
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                           HC_HTXnTBLAbias_Adif;
-                            vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                        case GL_ONE_MINUS_SRC_ALPHA:
-                            vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                            HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                            HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                            HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                            vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                            HC_HTXnTBLAbias_Inv | HC_HTXnTBLAbias_Adif;
-                           vmesa->regHTXnTBLRAa_0 = 0x0;
-                            break;
-                       }
-                   break;
-                    }
-                    break;
-                case GL_MODULATE:
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                     HC_HTXnTBLAbias_HTXnTBLRAbias;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                   vmesa->regHTXnTBLRAa_0= 0x0;
-                    switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_TOPA; 
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Atex; 
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a<<16;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Adif; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                       CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a<<8;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    break;
-                case GL_ADD:
-                case GL_SUBTRACT :
-                    if(texUnit1->_CurrentCombine->ModeA==GL_ADD) {
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                   }
-                   else {
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub | HC_HTXnTBLAbias_HTXnTBLRAbias;
-                    }
-                    vmesa->regHTXnTBLRFog_0 = 0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA;
-                    vmesa->regHTXnTBLRAa_0 = 0x0 |  ( 255<<16 );
-                    switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                       break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                   switch (texUnit1->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                       vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_TOPA;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_InvTOPA;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= a;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Adif;
-                        break;
-                    }
-                    break;
-                case GL_ADD_SIGNED :
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub;
-                    vmesa->regHTXnTBLRFog_0 = 0x0;
-                    vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                        HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA|
-                        HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                    vmesa->regHTXnTBLRAa_0 = ( 255<<16 | 0<<8 |128 );
-                    switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Inv;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[1]) {
-                   case GL_TEXTURE:
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Atex; 
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_HTXnTBLRAbias; 
-                        vmesa->regHTXnTBLRFog_0 |= a;
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Adif;
-                        break;
-                    }
-                    break;
-               case GL_INTERPOLATE :
-                    vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Sub;
-                    vmesa->regHTXnTBLRAa_0 = 0x0;
-                    vmesa->regHTXnTBLRFog_0 =  0x0;
-                    switch (texUnit1->_CurrentCombine->OperandA[0]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAb_TOPA; 
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAb_InvTOPA; 
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandA[1]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAc_TOPA;
-                        break;
-                   case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAc_InvTOPA;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Inv;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->OperandA[2]) {
-                    case GL_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAa_TOPA;
-                        break;
-                    case GL_ONE_MINUS_SRC_ALPHA:
-                        vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAa_InvTOPA;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[0]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 8);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAb_Adif;
-                        break;
-                    }
-                    switch (texUnit1->_CurrentCombine->SourceA[1]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Atex;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_HTXnTBLRA;
-                       vmesa->regHTXnTBLRAa_0 |= a;
-                        vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_HTXnTBLRAbias;
-                        vmesa->regHTXnTBLRFog_0 |= a;
-                        break;
-                   case GL_PRIMARY_COLOR :
-                    case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAc_Adif;
-                       vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAbias_Adif;
-                        break;
-                   }
-                    switch (texUnit1->_CurrentCombine->SourceA[2]) {
-                    case GL_TEXTURE:
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Atex;
-                        break;
-                    case GL_CONSTANT :
-                        CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[3], a);
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_HTXnTBLRA;
-                        vmesa->regHTXnTBLRAa_0 |= (a << 16);
-                        break;
-                    case GL_PRIMARY_COLOR :
-                   case GL_PREVIOUS :
-                        vmesa->regHTXnTBLAsat_0 |= HC_HTXnTBLAa_Adif;
-                        break;
-                   }
-                   break;
-               case GL_DOT3_RGB :
-               case GL_DOT3_RGBA :
-                   break;
-               }
-
-               vmesa->regHTXnTBLCop_1 |=
-                 get_combine_shift_factor(texUnit1->_CurrentCombine->ScaleShiftRGB,
-                                          texUnit1->_CurrentCombine->ScaleShiftA);
-               break;
-#ifndef EXPERIMENTAL_COMBINE_MODE
-       /*=* John Sheng [2003.7.18] texture add *=*/
-        case GL_ADD:
-            switch(texImage->Format) {
-            case GL_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Adif | HC_HTXnTBLAb_TOPA |
-                    HC_HTXnTBLAb_Atex | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_LUMINANCE:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-            case GL_LUMINANCE_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_INTENSITY:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Atex |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-               /*=* John Sheng [2003.7.18] texenv *=*/
-               /*vmesa->regHTXnTBLRAa_0 = 0x0;*/
-                vmesa->regHTXnTBLRAa_0 = (255<<16) | (255<<8) | 255;;
-                vmesa->regHTXnTBLRFog_0 = 0x0 | 255<<16;
-                break;
-            case GL_RGB:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-            case GL_RGBA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-            case GL_COLOR_INDEX:
-                switch(texObj->Palette.Format) {
-                case GL_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_0 | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_0 | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_Dif |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Adif | HC_HTXnTBLAb_TOPA |
-                    HC_HTXnTBLAb_Atex | HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                case GL_LUMINANCE:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-                case GL_LUMINANCE_ALPHA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                case GL_INTENSITY:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Atex |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_Adif;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0 | 255<<16;
-                break;
-                case GL_RGB:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_Adif | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                break;
-                case GL_RGBA:
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                    HC_HTXnTBLCa_TOPC | HC_HTXnTBLCa_HTXnTBLRC | HC_HTXnTBLCb_TOPC |
-                    HC_HTXnTBLCb_Tex | HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_Dif;
-                vmesa->regHTXnTBLCop_0 = HC_HTXnTBLCop_Add |
-                    HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 |
-                    HC_HTXnTBLCshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLRCa_0 = (255<<16) | (255<<8) | 255;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK |
-                    HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_Atex |
-                    HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_Adif |
-                    HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLCop_0 |= HC_HTXnTBLAop_Add |
-                    HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                break;
-                }
-                break;
-            }
-            break;
-           /*=* John Sheng [2003.7.18] texture dot3 *=*/
-           case GL_DOT3_RGB :
-           case GL_DOT3_RGBA :
-               vmesa->regHTXnTBLCop_0 = HC_HTXnTBLDOT4 | HC_HTXnTBLCop_Add | 
-                                        HC_HTXnTBLCbias_Cbias | HC_HTXnTBLCbias_0 | 
-                                         HC_HTXnTBLCshift_2 | HC_HTXnTBLAop_Add |
-                                         HC_HTXnTBLAbias_HTXnTBLRAbias | HC_HTXnTBLAshift_No;
-                vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
-                vmesa->regHTXnTBLCsat_0 = HC_HTXnTBLCsat_MASK |
-                                       HC_HTXnTBLCc_TOPC | HC_HTXnTBLCc_0;
-                vmesa->regHTXnTBLRFog_0 = 0x0;
-                vmesa->regHTXnTBLAsat_0 = HC_HTXnTBLAsat_MASK | 
-                                       HC_HTXnTBLAa_TOPA | HC_HTXnTBLAa_HTXnTBLRA |
-                                       HC_HTXnTBLAb_TOPA | HC_HTXnTBLAb_HTXnTBLRA |
-                                       HC_HTXnTBLAc_TOPA | HC_HTXnTBLAc_HTXnTBLRA;
-                vmesa->regHTXnTBLRAa_0 = 0x0;
-                switch (texUnit1->_CurrentCombine->OperandRGB[0]) {
-                case GL_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_TOPC; 
-                   break;
-                case GL_ONE_MINUS_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_InvTOPC; 
-                    break;
-                }
-                switch (texUnit1->_CurrentCombine->OperandRGB[1]) {
-                case GL_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_TOPC; 
-                    break;
-                case GL_ONE_MINUS_SRC_COLOR:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_InvTOPC; 
-                    break;
-                }
-                switch (texUnit1->_CurrentCombine->SourceRGB[0]) {
-                case GL_TEXTURE:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Tex; 
-                    break;
-                case GL_CONSTANT :
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCa_0 = (r << 16) | (g << 8) | b;
-                    break;
-               case GL_PRIMARY_COLOR :
-                case GL_PREVIOUS :
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCa_Dif; 
-                    break;
-                }
-                switch (texUnit1->_CurrentCombine->SourceRGB[1]) {
-                case GL_TEXTURE:
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Tex; 
-                    break;
-                case GL_CONSTANT :
-                   CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[0], r);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[1], g);
-                    CLAMPED_FLOAT_TO_UBYTE(texUnit1->EnvColor[2], b);
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_HTXnTBLRC;
-                    vmesa->regHTXnTBLRCb_0 = (r << 16) | (g << 8) | b;
-                    break;
-                case GL_PRIMARY_COLOR :
-                case GL_PREVIOUS :
-                    vmesa->regHTXnTBLCsat_0 |= HC_HTXnTBLCb_Dif; 
-                    break;
-                }
-               break;
-            default:
-                break;
-#endif
-            }
+           viaTexCombineState( vmesa, texUnit1->_CurrentCombine, 1 );
         }
         vmesa->dirty |= VIA_UPLOAD_TEXTURE;
        

diff --git a/src/mesa/drivers/dri/unichrome/via_texcombine.c b/src/mesa/drivers/dri/unichrome/via_texcombine.c
new file mode 100644 (file)
index 0000000..9559cb3
--- /dev/null
+++ b/src/mesa/drivers/dri/unichrome/via_texcombine.c
@@ -0,0 +1,382 @@
+/*
+ * (C) Copyright IBM Corporation 2004
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Ian Romanick <idr@us.ibm.com>
+ */
+
+#include <stdio.h>
+
+#include "glheader.h"
+#include "context.h"
+#include "macros.h"
+#include "colormac.h"
+#include "enums.h"
+#include "dd.h"
+
+#include "mm.h"
+#include "via_context.h"
+#include "via_state.h"
+#include "via_tex.h"
+#include "via_vb.h"
+#include "via_tris.h"
+#include "via_ioctl.h"
+
+#include "swrast/swrast.h"
+#include "array_cache/acache.h"
+#include "tnl/tnl.h"
+#include "swrast_setup/swrast_setup.h"
+
+#include "tnl/t_pipeline.h"
+
+#define VIA_USE_ALPHA (HC_XTC_Adif - HC_XTC_Dif)
+
+#define INPUT_A_SHIFT     14
+#define INPUT_B_SHIFT     7
+#define INPUT_C_SHIFT     0
+#define INPUT_BiasC_SHIFT 14
+#define INPUT_BiasA_SHIFT 3
+
+#define CONST_ONE         (HC_XTC_0 | HC_XTC_InvTOPC)
+
+static const unsigned color_operand_modifier[4] = {
+   0,
+   HC_XTC_InvTOPC,
+   VIA_USE_ALPHA,
+   VIA_USE_ALPHA | HC_XTC_InvTOPC,
+};
+
+static const unsigned alpha_operand_modifier[2] = {
+   0, HC_XTA_InvTOPA
+};
+
+static const unsigned c_shift_table[3] = {
+   HC_HTXnTBLCshift_No, HC_HTXnTBLCshift_1, HC_HTXnTBLCshift_2
+};
+
+static const unsigned  a_shift_table[3] = {
+   HC_HTXnTBLAshift_No, HC_HTXnTBLAshift_1, HC_HTXnTBLAshift_2
+};
+
+
+/**
+ * Calculate the hardware state for the specified texture combine mode
+ *
+ * \bug
+ * For the alpha combine, \c GL_CONSTANT is still probably wrong.
+ *
+ * \bug
+ * All forms of DOT3 bumpmapping are completely untested, and are most
+ * likely wrong.
+ *
+ * \bug
+ * This code still fails progs/demos/texenv for all modes with \c GL_ALPHA
+ * textures.  This was also the case with the code that Via supplied.  It
+ * also fails for \c GL_REPLACE with \c GL_RGBA textures.  Everything else
+ * that texenv tests looks good.
+ */
+void
+viaTexCombineState( viaContextPtr vmesa,
+                   const struct gl_tex_env_combine_state * combine,
+                   unsigned unit )
+{
+   unsigned color_arg[3];
+   unsigned alpha_arg[3];
+   unsigned color = 0;
+   unsigned alpha = 0;
+   unsigned bias = 0;
+   unsigned op = 0;
+   unsigned a_shift = combine->ScaleShiftRGB;
+   unsigned c_shift = combine->ScaleShiftA;
+   unsigned i;
+   unsigned constant_color[3];
+   unsigned ordered_constant_color[4];
+   unsigned constant_alpha = 0;
+   unsigned bias_alpha = 0;
+   const struct gl_texture_unit const * texUnit = & vmesa->glCtx->Texture.Unit[unit];
+   unsigned env_color[4];
+
+
+   CLAMPED_FLOAT_TO_UBYTE(env_color[0], texUnit->EnvColor[0]);
+   CLAMPED_FLOAT_TO_UBYTE(env_color[1], texUnit->EnvColor[1]);
+   CLAMPED_FLOAT_TO_UBYTE(env_color[2], texUnit->EnvColor[2]);
+   CLAMPED_FLOAT_TO_UBYTE(env_color[3], texUnit->EnvColor[3]);
+
+   (void) memset( constant_color, 0, sizeof( constant_color ) );
+   (void) memset( ordered_constant_color, 0, sizeof( ordered_constant_color ) );
+
+   for ( i = 0 ; i < combine->_NumArgsRGB ; i++ ) {
+      const GLint op = combine->OperandRGB[i] - GL_SRC_COLOR;
+
+      switch ( combine->SourceRGB[i] ) {
+      case GL_TEXTURE:
+        color_arg[i] = HC_XTC_Tex;
+        color_arg[i] += color_operand_modifier[op];
+        break;
+      case GL_CONSTANT:
+        color_arg[i] = HC_XTC_HTXnTBLRC;
+
+        switch( op ) {
+        case 0:
+           constant_color[i] = ((env_color[0] << 16) 
+                                | (env_color[1] << 8) 
+                                | env_color[2]);
+           break;
+        case 1:
+           constant_color[i] = ~((env_color[0] << 16) 
+                                 | (env_color[1] << 8) 
+                                 | env_color[2]) & 0x00ffffff;
+           break;
+        case 2:
+           constant_color[i] = ((env_color[3] << 16)
+                                | (env_color[3] << 8)
+                                | env_color[3]);
+           break;
+        case 3:
+           constant_color[i] = ~((env_color[3] << 16) 
+                                 | (env_color[3] << 8) 
+                                 | env_color[3]) & 0x00ffffff;
+           break;
+        }
+        break;
+      case GL_PRIMARY_COLOR:
+        color_arg[i] = HC_XTC_Dif;
+        color_arg[i] += color_operand_modifier[op];
+        break;
+      case GL_PREVIOUS:
+        color_arg[i] = (unit == 0) ? HC_XTC_Dif : HC_XTC_Cur;
+        color_arg[i] += color_operand_modifier[op];
+        break;
+      }
+   }
+       
+   for ( i = 0 ; i < combine->_NumArgsA ; i++ ) {
+      const GLint op = combine->OperandA[i] - GL_SRC_ALPHA;
+
+      switch ( combine->SourceA[i] ) {
+      case GL_TEXTURE:
+        alpha_arg[i] = HC_XTA_Atex;
+        alpha_arg[i] += alpha_operand_modifier[op];
+        break;
+      case GL_CONSTANT:
+        alpha_arg[i] = HC_XTA_HTXnTBLRA;
+        constant_alpha = (op == 0) 
+          ? env_color[3] : ~(env_color[3]) & 0x000000ff;
+        break;
+      case GL_PRIMARY_COLOR:
+        alpha_arg[i] = HC_XTA_Adif;
+        alpha_arg[i] += alpha_operand_modifier[op];
+        break;
+      case GL_PREVIOUS:
+        alpha_arg[i] = (unit == 0) ? HC_XTA_Adif : HC_XTA_Acur;
+        alpha_arg[i] += alpha_operand_modifier[op];
+        break;
+      }
+   }
+
+   
+   /* On the Unichrome, all combine operations take on some form of:
+    *
+    *     A * (B op Bias) + C
+    * 
+    * 'op' can be selected as add, subtract, min, max, or mask.  The min, max
+    * and mask modes are currently unused.  With the exception of DOT3, all
+    * standard GL_COMBINE modes can be implemented simply by selecting the
+    * correct inputs for A, B, C, and Bias and the correct operation for op.
+    */
+
+   color = HC_HTXnTBLCsat_MASK;
+   alpha = HC_HTXnTBLAsat_MASK;
+
+   switch( combine->ModeRGB ) {
+   /* A = 0, B = 0, C = arg0, Bias = 0
+    */
+   case GL_REPLACE:
+      bias |= (color_arg[0] << INPUT_BiasC_SHIFT);
+      ordered_constant_color[3] = constant_color[0];
+      break;
+      
+   /* A = arg[0], B = arg[1], C = 0, Bias = 0
+    */
+   case GL_MODULATE:
+      color |= (color_arg[0] << INPUT_A_SHIFT)
+       | (color_arg[1] << INPUT_B_SHIFT);
+
+      ordered_constant_color[0] = constant_color[0];
+      ordered_constant_color[1] = constant_color[1];
+      break;
+
+   /* A = 1.0, B = arg[0], C = 0, Bias = arg[1]
+    */
+   case GL_ADD:
+   case GL_SUBTRACT:
+      if ( combine->ModeRGB == GL_SUBTRACT ) {
+        op |= HC_HTXnTBLCop_Sub;
+      }
+
+      color |= (color_arg[0] << INPUT_B_SHIFT)
+       | (CONST_ONE << INPUT_A_SHIFT);
+      
+      bias |= (color_arg[1] << INPUT_BiasC_SHIFT);
+      ordered_constant_color[1] = constant_color[0];
+      ordered_constant_color[3] = constant_color[1];
+      break;
+
+   /* A = 0, B = arg[0], C = arg[1], Bias = 0.5
+    */
+   case GL_ADD_SIGNED:
+      color |= (color_arg[0] << INPUT_B_SHIFT)
+       | (color_arg[1] << INPUT_C_SHIFT);
+      bias |= HC_HTXnTBLCbias_HTXnTBLRC;
+      op |= HC_HTXnTBLCop_Sub;
+
+      ordered_constant_color[1] = constant_color[0];
+      ordered_constant_color[2] = constant_color[1];
+      ordered_constant_color[3] = 0x00808080;
+      break;
+
+   /* A = arg[2], B = arg[0], C = arg[1], Bias = arg[1]
+    */
+   case GL_INTERPOLATE:
+      op |= HC_HTXnTBLCop_Sub;
+
+      color |= (color_arg[2] << INPUT_A_SHIFT) |
+       (color_arg[0] << INPUT_B_SHIFT) |
+       (color_arg[1] << INPUT_C_SHIFT);
+      bias |= (color_arg[1] << INPUT_BiasC_SHIFT);
+
+      ordered_constant_color[0] = constant_color[2];
+      ordered_constant_color[1] = constant_color[0];
+      ordered_constant_color[2] = constant_color[1];
+      ordered_constant_color[3] = constant_color[1];
+      break;
+
+   /* At this point this code is completely untested.  It appears that the
+    * Unichrome has the same limitation as the Radeon R100.  The only
+    * supported post-scale when doing DOT3 bumpmapping is 1x.
+    */
+   case GL_DOT3_RGB_EXT:
+   case GL_DOT3_RGBA_EXT:
+   case GL_DOT3_RGB:
+   case GL_DOT3_RGBA:
+      c_shift = 2;
+      a_shift = 2;
+      color |= (color_arg[0] << INPUT_A_SHIFT) |
+       (color_arg[1] << INPUT_B_SHIFT);
+      op |= HC_HTXnTBLDOT4;
+      break;
+   }
+
+
+   /* The alpha blend stage has the annoying quirk of not having a
+    * hard-wired 0 input, like the color stage.  As a result, we have
+    * to program the constant register with 0 and use that as our
+    * 0 input.
+    */
+
+   switch( combine->ModeA ) {
+   /* A = 0, B = 0, C = 0, Bias = arg0
+    */
+   case GL_REPLACE:
+      bias |= (alpha_arg[0] << INPUT_BiasA_SHIFT);
+
+      alpha |= (HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) |
+       (HC_XTA_HTXnTBLRA << INPUT_B_SHIFT) |
+       (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT);
+      break;
+      
+   /* A = arg[0], B = arg[1], C = 0, Bias = 0
+    */
+   case GL_MODULATE:
+      alpha |= (alpha_arg[1] << INPUT_A_SHIFT)
+       | (alpha_arg[0] << INPUT_B_SHIFT)
+        | (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT);
+
+      bias |= (HC_XTA_HTXnTBLRA << INPUT_BiasA_SHIFT);
+      break;
+
+   /* A = 0, B = arg[0], C = 0, Bias = arg[1]
+    */
+   case GL_ADD:
+   case GL_SUBTRACT:
+      if ( combine->ModeA == GL_SUBTRACT ) {
+        op |= HC_HTXnTBLAop_Sub;
+      }
+
+      alpha |= (HC_XTA_HTXnTBLRA << INPUT_A_SHIFT) |
+       (alpha_arg[0] << INPUT_B_SHIFT) |
+       (HC_XTA_HTXnTBLRA << INPUT_C_SHIFT);
+      bias |= (alpha_arg[1] << INPUT_BiasA_SHIFT);
+      break;
+
+   /* A = 0, B = arg[0], C = arg[1], Bias = 0.5
+    */
+   case GL_ADD_SIGNED:
+      op |= HC_HTXnTBLAop_Sub;
+
+      alpha |= (alpha_arg[0] << INPUT_B_SHIFT)
+       | (alpha_arg[1] << INPUT_C_SHIFT);
+      bias |= (HC_XTA_HTXnTBLRA << INPUT_BiasA_SHIFT);
+
+      bias_alpha = 0x00000080;
+      break;
+
+   /* A = arg[2], B = arg[0], C = arg[1], Bias = arg[1]
+    */
+   case GL_INTERPOLATE:
+      op |= HC_HTXnTBLAop_Sub;
+
+      alpha |= (alpha_arg[2] << INPUT_A_SHIFT) |
+       (alpha_arg[0] << INPUT_B_SHIFT) |
+       (alpha_arg[1] << INPUT_C_SHIFT);
+      bias |= (alpha_arg[1] << INPUT_BiasA_SHIFT);
+      break;
+   }
+   
+
+   op |= c_shift_table[ c_shift ] | a_shift_table[ a_shift ];
+
+
+   if ( unit == 0 ) {
+      vmesa->regHTXnTBLMPfog_0 = HC_HTXnTBLMPfog_Fog;
+
+      vmesa->regHTXnTBLCsat_0 = color;
+      vmesa->regHTXnTBLAsat_0 = alpha;
+      vmesa->regHTXnTBLCop_0 = op | bias;
+      vmesa->regHTXnTBLRAa_0 = bias_alpha | (constant_alpha << 16);
+
+      vmesa->regHTXnTBLRCa_0 = ordered_constant_color[0];
+      vmesa->regHTXnTBLRCb_0 = ordered_constant_color[1];
+      vmesa->regHTXnTBLRCc_0 = ordered_constant_color[2];
+      vmesa->regHTXnTBLRCbias_0 = ordered_constant_color[3];
+   }
+   else {
+      vmesa->regHTXnTBLMPfog_1 = HC_HTXnTBLMPfog_Fog;
+
+      vmesa->regHTXnTBLCsat_1 = color;
+      vmesa->regHTXnTBLAsat_1 = alpha;
+      vmesa->regHTXnTBLCop_1 = op | bias;
+      vmesa->regHTXnTBLRAa_1 = bias_alpha | (constant_alpha << 16);
+   }
+}
+