X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Ftexenv.c;h=e5f1bd39ee74ddb56a5b22c192971643aeb95674;hb=06913497d6b17f454bf4c5b8601d391980eb8265;hp=6d86a4275cc4c05b82a764fbe3435454b18cdfd0;hpb=a89963cec1b5872d620c73ed8a5e54b10e3bf28b;p=mesa.git

diff --git a/src/mesa/main/texenv.c b/src/mesa/main/texenv.c
index 6d86a4275cc..e5f1bd39ee7 100644
--- a/src/mesa/main/texenv.c
+++ b/src/mesa/main/texenv.c
@@ -34,6 +34,8 @@
 #include "main/context.h"
 #include "main/enums.h"
 #include "main/macros.h"
+#include "main/mtypes.h"
+#include "main/state.h"
 #include "main/texenv.h"
 #include "main/texstate.h"
 
@@ -44,7 +46,7 @@
 
 /** Set texture env mode */
 static void
-set_env_mode(GLcontext *ctx,
+set_env_mode(struct gl_context *ctx,
              struct gl_texture_unit *texUnit,
              GLenum mode)
 {
@@ -58,19 +60,14 @@ set_env_mode(GLcontext *ctx,
    case GL_BLEND:
    case GL_DECAL:
    case GL_REPLACE:
+   case GL_ADD:
+   case GL_COMBINE:
       legal = GL_TRUE;
       break;
    case GL_REPLACE_EXT:
       mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */
       legal = GL_TRUE;
       break;
-   case GL_ADD:
-      legal = ctx->Extensions.EXT_texture_env_add;
-      break;
-   case GL_COMBINE:
-      legal = (ctx->Extensions.EXT_texture_env_combine ||
-               ctx->Extensions.ARB_texture_env_combine);
-      break;
    case GL_COMBINE4_NV:
       legal = ctx->Extensions.NV_texture_env_combine4;
       break;
@@ -89,36 +86,29 @@ set_env_mode(GLcontext *ctx,
 
 
 static void
-set_env_color(GLcontext *ctx,
+set_env_color(struct gl_context *ctx,
               struct gl_texture_unit *texUnit,
               const GLfloat *color)
 {
-   GLfloat tmp[4];
-   tmp[0] = CLAMP(color[0], 0.0F, 1.0F);
-   tmp[1] = CLAMP(color[1], 0.0F, 1.0F);
-   tmp[2] = CLAMP(color[2], 0.0F, 1.0F);
-   tmp[3] = CLAMP(color[3], 0.0F, 1.0F);
-   if (TEST_EQ_4V(tmp, texUnit->EnvColor))
+   if (TEST_EQ_4V(color, texUnit->EnvColorUnclamped))
       return;
    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-   COPY_4FV(texUnit->EnvColor, tmp);
+   COPY_4FV(texUnit->EnvColorUnclamped, color);
+   texUnit->EnvColor[0] = CLAMP(color[0], 0.0F, 1.0F);
+   texUnit->EnvColor[1] = CLAMP(color[1], 0.0F, 1.0F);
+   texUnit->EnvColor[2] = CLAMP(color[2], 0.0F, 1.0F);
+   texUnit->EnvColor[3] = CLAMP(color[3], 0.0F, 1.0F);
 }
 
 
 /** Set an RGB or A combiner mode/function */
 static void
-set_combiner_mode(GLcontext *ctx,
+set_combiner_mode(struct gl_context *ctx,
                   struct gl_texture_unit *texUnit,
                   GLenum pname, GLenum mode)
 {
    GLboolean legal;
 
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
    switch (mode) {
    case GL_REPLACE:
    case GL_MODULATE:
@@ -181,72 +171,43 @@ set_combiner_mode(GLcontext *ctx,
 
 /** Set an RGB or A combiner source term */
 static void
-set_combiner_source(GLcontext *ctx,
+set_combiner_source(struct gl_context *ctx,
                     struct gl_texture_unit *texUnit,
                     GLenum pname, GLenum param)
 {
    GLuint term;
    GLboolean alpha, legal;
 
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
    /*
     * Translate pname to (term, alpha).
+    *
+    * The enums were given sequential values for a reason.
     */
    switch (pname) {
    case GL_SOURCE0_RGB:
-      term = 0;
-      alpha = GL_FALSE;
-      break;
    case GL_SOURCE1_RGB:
-      term = 1;
-      alpha = GL_FALSE;
-      break;
    case GL_SOURCE2_RGB:
-      term = 2;
-      alpha = GL_FALSE;
-      break;
    case GL_SOURCE3_RGB_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         term = 3;
-         alpha = GL_FALSE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
+      term = pname - GL_SOURCE0_RGB;
+      alpha = GL_FALSE;
       break;
    case GL_SOURCE0_ALPHA:
-      term = 0;
-      alpha = GL_TRUE;
-      break;
    case GL_SOURCE1_ALPHA:
-      term = 1;
-      alpha = GL_TRUE;
-      break;
    case GL_SOURCE2_ALPHA:
-      term = 2;
-      alpha = GL_TRUE;
-      break;
    case GL_SOURCE3_ALPHA_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         term = 3;
-         alpha = GL_TRUE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
+      term = pname - GL_SOURCE0_ALPHA;
+      alpha = GL_TRUE;
       break;
    default:
       TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
       return;
    }
 
+   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {
+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+      return;
+   }
+
    assert(term < MAX_COMBINER_TERMS);
 
    /*
@@ -297,81 +258,40 @@ set_combiner_source(GLcontext *ctx,
 
 /** Set an RGB or A combiner operand term */
 static void
-set_combiner_operand(GLcontext *ctx,
+set_combiner_operand(struct gl_context *ctx,
                      struct gl_texture_unit *texUnit,
                      GLenum pname, GLenum param)
 {
    GLuint term;
    GLboolean alpha, legal;
 
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
+   /* The enums were given sequential values for a reason.
+    */
    switch (pname) {
    case GL_OPERAND0_RGB:
-      term = 0;
-      alpha = GL_FALSE;
-      break;
    case GL_OPERAND1_RGB:
-      term = 1;
-      alpha = GL_FALSE;
-      break;
    case GL_OPERAND2_RGB:
-      if (ctx->Extensions.ARB_texture_env_combine) {
-         term = 2;
-         alpha = GL_FALSE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
-      break;
    case GL_OPERAND3_RGB_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         term = 3;
-         alpha = GL_FALSE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
+      term = pname - GL_OPERAND0_RGB;
+      alpha = GL_FALSE;
       break;
    case GL_OPERAND0_ALPHA:
-      term = 0;
-      alpha = GL_TRUE;
-      break;
    case GL_OPERAND1_ALPHA:
-      term = 1;
-      alpha = GL_TRUE;
-      break;
    case GL_OPERAND2_ALPHA:
-      if (ctx->Extensions.ARB_texture_env_combine) {
-         term = 2;
-         alpha = GL_TRUE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
-      break;
    case GL_OPERAND3_ALPHA_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         term = 3;
-         alpha = GL_TRUE;
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-         return;
-      }
+      term = pname - GL_OPERAND0_ALPHA;
+      alpha = GL_TRUE;
       break;
    default:
       TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
       return;
    }
 
+   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {
+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+      return;
+   }
+
    assert(term < MAX_COMBINER_TERMS);
 
    /*
@@ -380,10 +300,23 @@ set_combiner_operand(GLcontext *ctx,
    switch (param) {
    case GL_SRC_COLOR:
    case GL_ONE_MINUS_SRC_COLOR:
-      legal = !alpha;
+      /* The color input can only be used with GL_OPERAND[01]_RGB in the EXT
+       * version.  In the ARB and NV versions they can be used for any RGB
+       * operand.
+       */
+      legal = !alpha
+	 && ((term < 2) || ctx->Extensions.ARB_texture_env_combine
+	     || ctx->Extensions.NV_texture_env_combine4);
       break;
-   case GL_SRC_ALPHA:
    case GL_ONE_MINUS_SRC_ALPHA:
+      /* GL_ONE_MINUS_SRC_ALPHA can only be used with
+       * GL_OPERAND[01]_(RGB|ALPHA) in the EXT version.  In the ARB and NV
+       * versions it can be used for any operand.
+       */
+      legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine
+	 || ctx->Extensions.NV_texture_env_combine4;
+      break;
+   case GL_SRC_ALPHA:
       legal = GL_TRUE;
       break;
    default:
@@ -405,18 +338,12 @@ set_combiner_operand(GLcontext *ctx,
 
 
 static void
-set_combiner_scale(GLcontext *ctx,
+set_combiner_scale(struct gl_context *ctx,
                    struct gl_texture_unit *texUnit,
                    GLenum pname, GLfloat scale)
 {
    GLuint shift;
 
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
    if (scale == 1.0F) {
       shift = 0;
    }
@@ -455,13 +382,15 @@ set_combiner_scale(GLcontext *ctx,
 void GLAPIENTRY
 _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
 {
+   const GLint iparam0 = (GLint) param[0];
+   struct gl_texture_unit *texUnit;
    GLuint maxUnit;
+
    GET_CURRENT_CONTEXT(ctx);
-   struct gl_texture_unit *texUnit;
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
       return;
@@ -472,14 +401,14 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
    if (target == GL_TEXTURE_ENV) {
       switch (pname) {
       case GL_TEXTURE_ENV_MODE:
-         set_env_mode(ctx, texUnit, (GLenum) (GLint) param[0]);
+         set_env_mode(ctx, texUnit, (GLenum) iparam0);
          break;
       case GL_TEXTURE_ENV_COLOR:
          set_env_color(ctx, texUnit, param);
          break;
       case GL_COMBINE_RGB:
       case GL_COMBINE_ALPHA:
-         set_combiner_mode(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
+         set_combiner_mode(ctx, texUnit, pname, (GLenum) iparam0);
 	 break;
       case GL_SOURCE0_RGB:
       case GL_SOURCE1_RGB:
@@ -489,7 +418,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
       case GL_SOURCE1_ALPHA:
       case GL_SOURCE2_ALPHA:
       case GL_SOURCE3_ALPHA_NV:
-         set_combiner_source(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
+         set_combiner_source(ctx, texUnit, pname, (GLenum) iparam0);
 	 break;
       case GL_OPERAND0_RGB:
       case GL_OPERAND1_RGB:
@@ -499,7 +428,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
       case GL_OPERAND1_ALPHA:
       case GL_OPERAND2_ALPHA:
       case GL_OPERAND3_ALPHA_NV:
-         set_combiner_operand(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
+         set_combiner_operand(ctx, texUnit, pname, (GLenum) iparam0);
 	 break;
       case GL_RGB_SCALE:
       case GL_ALPHA_SCALE:
@@ -510,19 +439,19 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
 	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
 	    return;
 	 }
-	 if (((GLenum) (GLint) param[0] < GL_TEXTURE0) ||
-	 ((GLenum) (GLint) param[0] > GL_TEXTURE31)) {
+	 if ((iparam0 < GL_TEXTURE0) ||
+             (iparam0 > GL_TEXTURE31)) {
 	    /* spec doesn't say this but it seems logical */
-	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);
+	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", iparam0);
 	    return;
 	 }
-	 if (!((1 << ((GLenum) (GLint) param[0] - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) {
-	    _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);
+	 if (!((1 << (iparam0 - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) {
+	    _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", iparam0);
 	    return;
 	 }
 	 else {
 	    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-	    texUnit->BumpTarget = (GLenum) (GLint) param[0];
+	    texUnit->BumpTarget = iparam0;
 	 }
 	 break;
       default:
@@ -531,11 +460,6 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
       }
    }
    else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
-	 return;
-      }
       if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
 	 if (texUnit->LodBias == param[0])
 	    return;
@@ -555,19 +479,18 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
 	 return;
       }
       if (pname == GL_COORD_REPLACE_NV) {
-         const GLenum value = (GLenum) param[0];
-         if (value == GL_TRUE || value == GL_FALSE) {
+         if (iparam0 == GL_TRUE || iparam0 == GL_FALSE) {
             /* It's kind of weird to set point state via glTexEnv,
              * but that's what the spec calls for.
              */
-            const GLboolean state = (GLboolean) value;
+            const GLboolean state = (GLboolean) iparam0;
             if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
                return;
             FLUSH_VERTICES(ctx, _NEW_POINT);
             ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
          }
          else {
-            _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
+            _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", iparam0);
             return;
          }
       }
@@ -586,7 +509,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
                   _mesa_lookup_enum_by_nr(target),
                   _mesa_lookup_enum_by_nr(pname),
                   *param,
-                  _mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
+                  _mesa_lookup_enum_by_nr((GLenum) iparam0));
 
    /* Tell device driver about the new texture environment */
    if (ctx->Driver.TexEnv) {
@@ -598,7 +521,10 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
 void GLAPIENTRY
 _mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
 {
-   _mesa_TexEnvfv( target, pname, &param );
+   GLfloat p[4];
+   p[0] = param;
+   p[1] = p[2] = p[3] = 0.0;
+   _mesa_TexEnvfv( target, pname, p );
 }
 
 
@@ -637,7 +563,7 @@ _mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
  * \return  value of queried pname or -1 if error.
  */
 static GLint
-get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
+get_texenvi(struct gl_context *ctx, const struct gl_texture_unit *texUnit,
             GLenum pname)
 {
    switch (pname) {
@@ -645,35 +571,15 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       return texUnit->EnvMode;
       break;
    case GL_COMBINE_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return texUnit->Combine.ModeRGB;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+      return texUnit->Combine.ModeRGB;
    case GL_COMBINE_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return texUnit->Combine.ModeA;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+      return texUnit->Combine.ModeA;
    case GL_SOURCE0_RGB:
    case GL_SOURCE1_RGB:
-   case GL_SOURCE2_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
-         return texUnit->Combine.SourceRGB[rgb_idx];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+   case GL_SOURCE2_RGB: {
+      const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
+      return texUnit->Combine.SourceRGB[rgb_idx];
+   }
    case GL_SOURCE3_RGB_NV:
       if (ctx->Extensions.NV_texture_env_combine4) {
          return texUnit->Combine.SourceRGB[3];
@@ -684,16 +590,10 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       break;
    case GL_SOURCE0_ALPHA:
    case GL_SOURCE1_ALPHA:
-   case GL_SOURCE2_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
-         return texUnit->Combine.SourceA[alpha_idx];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+   case GL_SOURCE2_ALPHA: {
+      const unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
+      return texUnit->Combine.SourceA[alpha_idx];
+   }
    case GL_SOURCE3_ALPHA_NV:
       if (ctx->Extensions.NV_texture_env_combine4) {
          return texUnit->Combine.SourceA[3];
@@ -704,16 +604,10 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       break;
    case GL_OPERAND0_RGB:
    case GL_OPERAND1_RGB:
-   case GL_OPERAND2_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned op_rgb = pname - GL_OPERAND0_RGB;
-         return texUnit->Combine.OperandRGB[op_rgb];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+   case GL_OPERAND2_RGB: {
+      const unsigned op_rgb = pname - GL_OPERAND0_RGB;
+      return texUnit->Combine.OperandRGB[op_rgb];
+   }
    case GL_OPERAND3_RGB_NV:
       if (ctx->Extensions.NV_texture_env_combine4) {
          return texUnit->Combine.OperandRGB[3];
@@ -724,16 +618,10 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       break;
    case GL_OPERAND0_ALPHA:
    case GL_OPERAND1_ALPHA:
-   case GL_OPERAND2_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
-         return texUnit->Combine.OperandA[op_alpha];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+   case GL_OPERAND2_ALPHA: {
+      const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
+      return texUnit->Combine.OperandA[op_alpha];
+   }
    case GL_OPERAND3_ALPHA_NV:
       if (ctx->Extensions.NV_texture_env_combine4) {
          return texUnit->Combine.OperandA[3];
@@ -743,23 +631,9 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       }
       break;
    case GL_RGB_SCALE:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return 1 << texUnit->Combine.ScaleShiftRGB;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+      return 1 << texUnit->Combine.ScaleShiftRGB;
    case GL_ALPHA_SCALE:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return 1 << texUnit->Combine.ScaleShiftA;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
+      return 1 << texUnit->Combine.ScaleShiftA;
    case GL_BUMP_TARGET_ATI:
       /* spec doesn't say so, but I think this should be queryable */
       if (ctx->Extensions.ATI_envmap_bumpmap) {
@@ -771,7 +645,8 @@ get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       break;
 
    default:
-      ;
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+      break;
    }
 
    return -1; /* error */
@@ -788,7 +663,7 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
       return;
@@ -798,7 +673,12 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
 
    if (target == GL_TEXTURE_ENV) {
       if (pname == GL_TEXTURE_ENV_COLOR) {
-         COPY_4FV( params, texUnit->EnvColor );
+         if(ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
+            _mesa_update_state(ctx);
+         if(ctx->Color._ClampFragmentColor)
+            COPY_4FV( params, texUnit->EnvColor );
+         else
+            COPY_4FV( params, texUnit->EnvColorUnclamped );
       }
       else {
          GLint val = get_texenvi(ctx, texUnit, pname);
@@ -808,11 +688,6 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
       }
    }
    else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
-	 return;
-      }
       if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
          *params = texUnit->LodBias;
       }
@@ -852,7 +727,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
       return;
@@ -875,11 +750,6 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
       }
    }
    else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
-	 return;
-      }
       if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
          *params = (GLint) texUnit->LodBias;
       }