2 * Copyright 2000-2001 VA Linux Systems, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.com>
29 #include "main/mtypes.h"
30 #include "main/colormac.h"
34 #include "mgacontext.h"
43 #include "swrast/swrast.h"
46 #include "tnl/t_context.h"
47 #include "tnl/t_pipeline.h"
48 #include "swrast_setup/swrast_setup.h"
51 #include "drirenderbuffer.h"
54 static void updateSpecularLighting( GLcontext
*ctx
);
56 static const GLuint mgarop_NoBLK
[16] = {
57 DC_atype_rpl
| 0x00000000, DC_atype_rstr
| 0x00080000,
58 DC_atype_rstr
| 0x00040000, DC_atype_rpl
| 0x000c0000,
59 DC_atype_rstr
| 0x00020000, DC_atype_rstr
| 0x000a0000,
60 DC_atype_rstr
| 0x00060000, DC_atype_rstr
| 0x000e0000,
61 DC_atype_rstr
| 0x00010000, DC_atype_rstr
| 0x00090000,
62 DC_atype_rstr
| 0x00050000, DC_atype_rstr
| 0x000d0000,
63 DC_atype_rpl
| 0x00030000, DC_atype_rstr
| 0x000b0000,
64 DC_atype_rstr
| 0x00070000, DC_atype_rpl
| 0x000f0000
67 /* =============================================================
71 static void mgaDDAlphaFunc(GLcontext
*ctx
, GLenum func
, GLfloat ref
)
73 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
77 CLAMPED_FLOAT_TO_UBYTE(refByte
, ref
);
103 a
= AC_atmode_noacmp
;
110 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
111 mmesa
->hw
.alpha_func
= a
| MGA_FIELD( AC_atref
, refByte
);
114 static void updateBlendLogicOp(GLcontext
*ctx
)
116 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
117 GLboolean logicOp
= RGBA_LOGICOP_ENABLED(ctx
);
119 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
121 mmesa
->hw
.blend_func_enable
=
122 (ctx
->Color
.BlendEnabled
&& !logicOp
) ? ~0 : 0;
124 FALLBACK( ctx
, MGA_FALLBACK_BLEND
,
125 ctx
->Color
.BlendEnabled
&& !logicOp
&&
126 mmesa
->hw
.blend_func
== (AC_src_src_alpha_sat
| AC_dst_zero
) );
129 static void mgaDDBlendEquationSeparate(GLcontext
*ctx
,
130 GLenum modeRGB
, GLenum modeA
)
132 assert( modeRGB
== modeA
);
133 updateBlendLogicOp( ctx
);
136 static void mgaDDBlendFuncSeparate( GLcontext
*ctx
, GLenum sfactorRGB
,
137 GLenum dfactorRGB
, GLenum sfactorA
,
140 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
144 switch (ctx
->Color
.BlendSrcRGB
) {
146 src
= AC_src_zero
; break;
148 src
= AC_src_src_alpha
; break;
150 default: /* never happens */
151 src
= AC_src_one
; break;
153 src
= AC_src_dst_color
; break;
154 case GL_ONE_MINUS_DST_COLOR
:
155 src
= AC_src_om_dst_color
; break;
156 case GL_ONE_MINUS_SRC_ALPHA
:
157 src
= AC_src_om_src_alpha
; break;
159 src
= (ctx
->Visual
.alphaBits
> 0)
160 ? AC_src_dst_alpha
: AC_src_one
;
162 case GL_ONE_MINUS_DST_ALPHA
:
163 src
= (ctx
->Visual
.alphaBits
> 0)
164 ? AC_src_om_dst_alpha
: AC_src_zero
;
166 case GL_SRC_ALPHA_SATURATE
:
167 src
= (ctx
->Visual
.alphaBits
> 0)
168 ? AC_src_src_alpha_sat
: AC_src_zero
;
172 switch (ctx
->Color
.BlendDstRGB
) {
174 dst
= AC_dst_src_alpha
; break;
175 case GL_ONE_MINUS_SRC_ALPHA
:
176 dst
= AC_dst_om_src_alpha
; break;
177 default: /* never happens */
179 dst
= AC_dst_zero
; break;
181 dst
= AC_dst_one
; break;
183 dst
= AC_dst_src_color
; break;
184 case GL_ONE_MINUS_SRC_COLOR
:
185 dst
= AC_dst_om_src_color
; break;
187 dst
= (ctx
->Visual
.alphaBits
> 0)
188 ? AC_dst_dst_alpha
: AC_dst_one
;
190 case GL_ONE_MINUS_DST_ALPHA
:
191 dst
= (ctx
->Visual
.alphaBits
> 0)
192 ? AC_dst_om_dst_alpha
: AC_dst_zero
;
196 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
197 mmesa
->hw
.blend_func
= (src
| dst
);
199 FALLBACK( ctx
, MGA_FALLBACK_BLEND
,
200 ctx
->Color
.BlendEnabled
&& !RGBA_LOGICOP_ENABLED(ctx
) &&
201 mmesa
->hw
.blend_func
== (AC_src_src_alpha_sat
| AC_dst_zero
) );
204 /* =============================================================
208 static void mgaDDDepthFunc(GLcontext
*ctx
, GLenum func
)
210 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
215 /* can't do this in h/w, we'll use a s/w fallback */
216 FALLBACK (ctx
, MGA_FALLBACK_DEPTH
, ctx
->Depth
.Test
);
220 zmode
= DC_zmode_nozcmp
; break;
222 zmode
= DC_zmode_zlt
; break;
224 zmode
= DC_zmode_zlte
; break;
226 zmode
= DC_zmode_ze
; break;
228 zmode
= DC_zmode_zgt
; break;
230 zmode
= DC_zmode_zgte
; break;
232 zmode
= DC_zmode_zne
; break;
237 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
238 mmesa
->hw
.zmode
&= DC_zmode_MASK
;
239 mmesa
->hw
.zmode
|= zmode
;
242 static void mgaDDDepthMask(GLcontext
*ctx
, GLboolean flag
)
244 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
247 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
248 mmesa
->hw
.zmode
&= DC_atype_MASK
;
249 mmesa
->hw
.zmode
|= (flag
) ? DC_atype_zi
: DC_atype_i
;
253 static void mgaDDClearDepth(GLcontext
*ctx
, GLclampd d
)
255 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
257 /* Select the Z depth. The ~ is used because the _MASK values in the
258 * MGA driver are used to mask OFF the selected bits. In this case,
259 * we want to mask off everything except the MA_zwidth bits.
261 switch (mmesa
->setup
.maccess
& ~MA_zwidth_MASK
) {
262 case MA_zwidth_16
: mmesa
->ClearDepth
= d
* 0x0000ffff; break;
263 case MA_zwidth_24
: mmesa
->ClearDepth
= d
* 0xffffff00; break;
264 case MA_zwidth_32
: mmesa
->ClearDepth
= d
* 0xffffffff; break;
270 /* =============================================================
275 static void mgaDDFogfv(GLcontext
*ctx
, GLenum pname
, const GLfloat
*param
)
277 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
279 if (pname
== GL_FOG_COLOR
) {
280 GLuint color
= PACK_COLOR_888((GLubyte
)(ctx
->Fog
.Color
[0]*255.0F
),
281 (GLubyte
)(ctx
->Fog
.Color
[1]*255.0F
),
282 (GLubyte
)(ctx
->Fog
.Color
[2]*255.0F
));
284 MGA_STATECHANGE(mmesa
, MGA_UPLOAD_CONTEXT
);
285 mmesa
->setup
.fogcolor
= color
;
290 /* =============================================================
295 void mgaUpdateClipping(const GLcontext
*ctx
)
297 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
299 if (mmesa
->driDrawable
)
301 int x1
= mmesa
->driDrawable
->x
+ ctx
->Scissor
.X
;
302 int y1
= mmesa
->driDrawable
->y
+ mmesa
->driDrawable
->h
303 - (ctx
->Scissor
.Y
+ ctx
->Scissor
.Height
);
304 int x2
= x1
+ ctx
->Scissor
.Width
;
305 int y2
= y1
+ ctx
->Scissor
.Height
;
312 mmesa
->scissor_rect
.x1
= x1
;
313 mmesa
->scissor_rect
.y1
= y1
;
314 mmesa
->scissor_rect
.x2
= x2
;
315 mmesa
->scissor_rect
.y2
= y2
;
317 mmesa
->dirty
|= MGA_UPLOAD_CLIPRECTS
;
322 static void mgaDDScissor( GLcontext
*ctx
, GLint x
, GLint y
,
323 GLsizei w
, GLsizei h
)
325 if ( ctx
->Scissor
.Enabled
) {
326 FLUSH_BATCH( MGA_CONTEXT(ctx
) ); /* don't pipeline cliprect changes */
327 mgaUpdateClipping( ctx
);
332 /* =============================================================
337 #define _CULL_DISABLE 0
338 #define _CULL_NEGATIVE ((1<<11)|(1<<5)|(1<<16))
339 #define _CULL_POSITIVE (1<<11)
341 static void mgaDDCullFaceFrontFace(GLcontext
*ctx
, GLenum unused
)
343 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
345 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
346 if (ctx
->Polygon
.CullFlag
&&
347 ctx
->Polygon
.CullFaceMode
!= GL_FRONT_AND_BACK
)
349 mmesa
->hw
.cull
= _CULL_NEGATIVE
;
351 if (ctx
->Polygon
.CullFaceMode
== GL_FRONT
)
352 mmesa
->hw
.cull
^= (_CULL_POSITIVE
^ _CULL_NEGATIVE
);
354 if (ctx
->Polygon
.FrontFace
!= GL_CCW
)
355 mmesa
->hw
.cull
^= (_CULL_POSITIVE
^ _CULL_NEGATIVE
);
357 mmesa
->hw
.cull_dualtex
= mmesa
->hw
.cull
^
358 (_CULL_POSITIVE
^ _CULL_NEGATIVE
); /* warp bug? */
361 mmesa
->hw
.cull
= _CULL_DISABLE
;
362 mmesa
->hw
.cull_dualtex
= _CULL_DISABLE
;
367 /* =============================================================
371 static void mgaDDColorMask(GLcontext
*ctx
,
372 GLboolean r
, GLboolean g
,
373 GLboolean b
, GLboolean a
)
375 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
376 mgaScreenPrivate
*mgaScreen
= mmesa
->mgaScreen
;
379 GLuint mask
= mgaPackColor(mgaScreen
->cpp
,
380 ctx
->Color
.ColorMask
[RCOMP
],
381 ctx
->Color
.ColorMask
[GCOMP
],
382 ctx
->Color
.ColorMask
[BCOMP
],
383 ctx
->Color
.ColorMask
[ACOMP
]);
385 if (mgaScreen
->cpp
== 2)
386 mask
= mask
| (mask
<< 16);
388 if (mmesa
->setup
.plnwt
!= mask
) {
389 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
390 mmesa
->setup
.plnwt
= mask
;
395 /* =============================================================
399 static int mgaStipples
[16] = {
419 * The MGA supports a subset of possible 4x4 stipples natively, GL
420 * wants 32x32. Fortunately stipple is usually a repeating pattern.
422 * \param ctx GL rendering context to be affected
423 * \param mask Pointer to the 32x32 stipple mask
426 static void mgaDDPolygonStipple( GLcontext
*ctx
, const GLubyte
*mask
)
428 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
429 const GLubyte
*m
= mask
;
432 int active
= (ctx
->Polygon
.StippleFlag
&&
433 mmesa
->raster_primitive
== GL_TRIANGLES
);
437 mmesa
->haveHwStipple
= 0;
440 mmesa
->dirty
|= MGA_UPLOAD_CONTEXT
;
441 mmesa
->setup
.dwgctl
&= ~(0xf<<20);
444 p
[0] = mask
[0] & 0xf; p
[0] |= p
[0] << 4;
445 p
[1] = mask
[4] & 0xf; p
[1] |= p
[1] << 4;
446 p
[2] = mask
[8] & 0xf; p
[2] |= p
[2] << 4;
447 p
[3] = mask
[12] & 0xf; p
[3] |= p
[3] << 4;
449 for (k
= 0 ; k
< 8 ; k
++)
450 for (j
= 0 ; j
< 4; j
++)
451 for (i
= 0 ; i
< 4 ; i
++)
456 stipple
= ( ((p
[0] & 0xf) << 0) |
457 ((p
[1] & 0xf) << 4) |
458 ((p
[2] & 0xf) << 8) |
459 ((p
[3] & 0xf) << 12) );
461 for (i
= 0 ; i
< 16 ; i
++)
462 if (mgaStipples
[i
] == stipple
) {
463 mmesa
->poly_stipple
= i
<<20;
464 mmesa
->haveHwStipple
= 1;
469 mmesa
->setup
.dwgctl
&= ~(0xf<<20);
470 mmesa
->setup
.dwgctl
|= mmesa
->poly_stipple
;
475 /* =============================================================
476 * Rendering attributes
478 * We really don't want to recalculate all this every time we bind a
479 * texture. These things shouldn't change all that often, so it makes
480 * sense to break them out of the core texture state update routines.
483 static void updateSpecularLighting( GLcontext
*ctx
)
485 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
488 specen
= NEED_SECONDARY_COLOR(ctx
) ? TMC_specen_enable
: 0;
490 if ( specen
!= mmesa
->hw
.specen
) {
491 mmesa
->hw
.specen
= specen
;
492 mmesa
->dirty
|= MGA_UPLOAD_TEX0
| MGA_UPLOAD_TEX1
;
497 /* =============================================================
502 static void mgaDDLightModelfv(GLcontext
*ctx
, GLenum pname
,
503 const GLfloat
*param
)
505 if (pname
== GL_LIGHT_MODEL_COLOR_CONTROL
) {
506 FLUSH_BATCH( MGA_CONTEXT(ctx
) );
507 updateSpecularLighting( ctx
);
512 /* =============================================================
518 mgaDDStencilFuncSeparate(GLcontext
*ctx
, GLenum face
, GLenum func
, GLint ref
,
521 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
525 stencil
= MGA_FIELD( S_sref
, ref
) | MGA_FIELD( S_smsk
, mask
);
529 stencilctl
= SC_smode_snever
;
532 stencilctl
= SC_smode_slt
;
535 stencilctl
= SC_smode_slte
;
538 stencilctl
= SC_smode_sgt
;
541 stencilctl
= SC_smode_sgte
;
544 stencilctl
= SC_smode_sne
;
547 stencilctl
= SC_smode_se
;
551 stencilctl
= SC_smode_salways
;
555 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
556 mmesa
->hw
.stencil
&= (S_sref_MASK
& S_smsk_MASK
);
557 mmesa
->hw
.stencil
|= stencil
;
558 mmesa
->hw
.stencilctl
&= SC_smode_MASK
;
559 mmesa
->hw
.stencilctl
|= stencilctl
;
563 mgaDDStencilMaskSeparate(GLcontext
*ctx
, GLenum face
, GLuint mask
)
565 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
567 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
568 mmesa
->hw
.stencil
&= S_swtmsk_MASK
;
569 mmesa
->hw
.stencil
|= MGA_FIELD( S_swtmsk
, mask
);
573 mgaDDStencilOpSeparate(GLcontext
*ctx
, GLenum face
, GLenum fail
, GLenum zfail
,
576 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
580 switch (ctx
->Stencil
.FailFunc
[0])
583 stencilctl
|= SC_sfailop_keep
;
586 stencilctl
|= SC_sfailop_zero
;
589 stencilctl
|= SC_sfailop_replace
;
592 stencilctl
|= SC_sfailop_incrsat
;
595 stencilctl
|= SC_sfailop_decrsat
;
598 stencilctl
|= SC_sfailop_incr
;
601 stencilctl
|= SC_sfailop_decr
;
604 stencilctl
|= SC_sfailop_invert
;
610 switch (ctx
->Stencil
.ZFailFunc
[0])
613 stencilctl
|= SC_szfailop_keep
;
616 stencilctl
|= SC_szfailop_zero
;
619 stencilctl
|= SC_szfailop_replace
;
622 stencilctl
|= SC_szfailop_incrsat
;
625 stencilctl
|= SC_szfailop_decrsat
;
628 stencilctl
|= SC_szfailop_incr
;
631 stencilctl
|= SC_szfailop_decr
;
634 stencilctl
|= SC_szfailop_invert
;
640 switch (ctx
->Stencil
.ZPassFunc
[0])
643 stencilctl
|= SC_szpassop_keep
;
646 stencilctl
|= SC_szpassop_zero
;
649 stencilctl
|= SC_szpassop_replace
;
652 stencilctl
|= SC_szpassop_incrsat
;
655 stencilctl
|= SC_szpassop_decrsat
;
658 stencilctl
|= SC_szpassop_incr
;
661 stencilctl
|= SC_szpassop_decr
;
664 stencilctl
|= SC_szpassop_invert
;
670 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
671 mmesa
->hw
.stencilctl
&= (SC_sfailop_MASK
& SC_szfailop_MASK
673 mmesa
->hw
.stencilctl
|= stencilctl
;
677 /* =============================================================
678 * Window position and viewport transformation
681 void mgaCalcViewport( GLcontext
*ctx
)
683 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
684 const GLfloat
*v
= ctx
->Viewport
._WindowMap
.m
;
685 GLfloat
*m
= mmesa
->hw_viewport
;
687 /* See also mga_translate_vertex.
689 m
[MAT_SX
] = v
[MAT_SX
];
690 m
[MAT_TX
] = v
[MAT_TX
] + mmesa
->drawX
+ SUBPIXEL_X
;
691 m
[MAT_SY
] = - v
[MAT_SY
];
692 m
[MAT_TY
] = - v
[MAT_TY
] + mmesa
->driDrawable
->h
+ mmesa
->drawY
+ SUBPIXEL_Y
;
693 m
[MAT_SZ
] = v
[MAT_SZ
] * mmesa
->depth_scale
;
694 m
[MAT_TZ
] = v
[MAT_TZ
] * mmesa
->depth_scale
;
696 mmesa
->SetupNewInputs
= ~0;
699 static void mgaViewport( GLcontext
*ctx
,
701 GLsizei width
, GLsizei height
)
703 mgaCalcViewport( ctx
);
706 static void mgaDepthRange( GLcontext
*ctx
,
707 GLclampd nearval
, GLclampd farval
)
709 mgaCalcViewport( ctx
);
713 /* =============================================================
717 static void mgaDDClearColor(GLcontext
*ctx
,
718 const GLfloat color
[4] )
720 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
722 CLAMPED_FLOAT_TO_UBYTE(c
[0], color
[0]);
723 CLAMPED_FLOAT_TO_UBYTE(c
[1], color
[1]);
724 CLAMPED_FLOAT_TO_UBYTE(c
[2], color
[2]);
725 CLAMPED_FLOAT_TO_UBYTE(c
[3], color
[3]);
727 mmesa
->ClearColor
= mgaPackColor( mmesa
->mgaScreen
->cpp
,
728 c
[0], c
[1], c
[2], c
[3]);
732 /* Fallback to swrast for select and feedback.
734 static void mgaRenderMode( GLcontext
*ctx
, GLenum mode
)
736 FALLBACK( ctx
, MGA_FALLBACK_RENDERMODE
, (mode
!= GL_RENDER
) );
740 static void mgaDDLogicOp( GLcontext
*ctx
, GLenum opcode
)
742 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
744 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
745 mmesa
->hw
.rop
= mgarop_NoBLK
[ opcode
& 0x0f ];
749 static void mga_set_cliprects(mgaContextPtr mmesa
)
751 __DRIdrawablePrivate
*driDrawable
= mmesa
->driDrawable
;
753 if ((mmesa
->draw_buffer
!= MGA_FRONT
)
754 || (driDrawable
->numBackClipRects
== 0)) {
755 if (driDrawable
->numClipRects
== 0) {
756 static drm_clip_rect_t zeroareacliprect
= {0,0,0,0};
757 mmesa
->numClipRects
= 1;
758 mmesa
->pClipRects
= &zeroareacliprect
;
760 mmesa
->numClipRects
= driDrawable
->numClipRects
;
761 mmesa
->pClipRects
= driDrawable
->pClipRects
;
763 mmesa
->drawX
= driDrawable
->x
;
764 mmesa
->drawY
= driDrawable
->y
;
766 mmesa
->numClipRects
= driDrawable
->numBackClipRects
;
767 mmesa
->pClipRects
= driDrawable
->pBackClipRects
;
768 mmesa
->drawX
= driDrawable
->backX
;
769 mmesa
->drawY
= driDrawable
->backY
;
772 mmesa
->setup
.dstorg
= mmesa
->drawOffset
;
773 mmesa
->dirty
|= MGA_UPLOAD_CONTEXT
| MGA_UPLOAD_CLIPRECTS
;
777 void mgaUpdateRects( mgaContextPtr mmesa
, GLuint buffers
)
779 __DRIdrawablePrivate
*const driDrawable
= mmesa
->driDrawable
;
780 __DRIdrawablePrivate
*const driReadable
= mmesa
->driReadable
;
782 mmesa
->dirty_cliprects
= 0;
784 driUpdateFramebufferSize(mmesa
->glCtx
, driDrawable
);
785 if (driDrawable
!= driReadable
) {
786 driUpdateFramebufferSize(mmesa
->glCtx
, driReadable
);
789 mga_set_cliprects(mmesa
);
791 mgaUpdateClipping( mmesa
->glCtx
);
792 mgaCalcViewport( mmesa
->glCtx
);
796 static void mgaDDDrawBuffer(GLcontext
*ctx
, GLenum mode
)
798 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
800 FLUSH_BATCH( mmesa
);
802 if (ctx
->DrawBuffer
->_NumColorDrawBuffers
!= 1) {
803 /* GL_NONE or GL_FRONT_AND_BACK or stereo left&right, etc */
804 FALLBACK( ctx
, MGA_FALLBACK_DRAW_BUFFER
, GL_TRUE
);
808 switch ( ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[0] ) {
809 case BUFFER_FRONT_LEFT
:
810 mmesa
->setup
.dstorg
= mmesa
->mgaScreen
->frontOffset
;
811 mmesa
->draw_buffer
= MGA_FRONT
;
813 case BUFFER_BACK_LEFT
:
814 mmesa
->setup
.dstorg
= mmesa
->mgaScreen
->backOffset
;
815 mmesa
->draw_buffer
= MGA_BACK
;
818 FALLBACK( ctx
, MGA_FALLBACK_DRAW_BUFFER
, GL_TRUE
);
822 mmesa
->dirty
|= MGA_UPLOAD_CONTEXT
;
823 mga_set_cliprects(mmesa
);
824 FALLBACK(ctx
, MGA_FALLBACK_DRAW_BUFFER
, GL_FALSE
);
828 static void mgaDDReadBuffer(GLcontext
*ctx
, GLenum mode
)
830 /* nothing, until we implement h/w glRead/CopyPixels or CopyTexImage */
834 /* =============================================================
835 * State enable/disable
839 static void mgaDDEnable(GLcontext
*ctx
, GLenum cap
, GLboolean state
)
841 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
845 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
846 if (!ctx
->Color
.DitherFlag
)
847 mmesa
->setup
.maccess
|= MA_nodither_enable
;
849 mmesa
->setup
.maccess
&= ~MA_nodither_enable
;
852 case GL_COLOR_SUM_EXT
:
853 FLUSH_BATCH( mmesa
);
854 updateSpecularLighting( ctx
);
857 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
858 mmesa
->hw
.alpha_func_enable
= (state
) ? ~0 : 0;
861 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
862 FALLBACK (ctx
, MGA_FALLBACK_DEPTH
,
863 ctx
->Depth
.Func
== GL_NEVER
&& ctx
->Depth
.Test
);
866 case GL_SCISSOR_TEST
:
867 FLUSH_BATCH( mmesa
);
868 mmesa
->scissor
= state
;
869 mgaUpdateClipping( ctx
);
873 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
874 if (ctx
->Fog
.Enabled
)
875 mmesa
->setup
.maccess
|= MA_fogen_enable
;
877 mmesa
->setup
.maccess
&= ~MA_fogen_enable
;
880 mgaDDCullFaceFrontFace( ctx
, 0 );
886 case GL_POLYGON_STIPPLE
:
887 if (mmesa
->haveHwStipple
&& mmesa
->raster_primitive
== GL_TRIANGLES
) {
888 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
889 mmesa
->setup
.dwgctl
&= ~(0xf<<20);
891 mmesa
->setup
.dwgctl
|= mmesa
->poly_stipple
;
896 case GL_COLOR_LOGIC_OP
:
897 updateBlendLogicOp( ctx
);
900 case GL_STENCIL_TEST
:
901 MGA_STATECHANGE( mmesa
, MGA_UPLOAD_CONTEXT
);
902 if (mmesa
->hw_stencil
) {
903 mmesa
->hw
.stencil_enable
= ( state
) ? ~0 : 0;
906 FALLBACK( ctx
, MGA_FALLBACK_STENCIL
, state
);
914 /* =============================================================
917 static void mgaDDPrintDirty( const char *msg
, GLuint state
)
919 fprintf(stderr
, "%s (0x%03x): %s%s%s%s%s%s%s\n",
921 (unsigned int) state
,
922 (state
& MGA_WAIT_AGE
) ? "wait-age " : "",
923 (state
& MGA_UPLOAD_TEX0IMAGE
) ? "upload-tex0-img " : "",
924 (state
& MGA_UPLOAD_TEX1IMAGE
) ? "upload-tex1-img " : "",
925 (state
& MGA_UPLOAD_CONTEXT
) ? "upload-ctx " : "",
926 (state
& MGA_UPLOAD_TEX0
) ? "upload-tex0 " : "",
927 (state
& MGA_UPLOAD_TEX1
) ? "upload-tex1 " : "",
928 (state
& MGA_UPLOAD_PIPE
) ? "upload-pipe " : ""
932 /* Push the state into the sarea and/or texture memory.
934 void mgaEmitHwStateLocked( mgaContextPtr mmesa
)
936 drm_mga_sarea_t
*sarea
= mmesa
->sarea
;
937 GLcontext
* ctx
= mmesa
->glCtx
;
939 if (MGA_DEBUG
& DEBUG_VERBOSE_MSG
)
940 mgaDDPrintDirty( __FUNCTION__
, mmesa
->dirty
);
942 if (mmesa
->dirty
& MGA_UPLOAD_CONTEXT
) {
943 mmesa
->setup
.wflag
= _CULL_DISABLE
;
944 if (mmesa
->raster_primitive
== GL_TRIANGLES
) {
945 if ((ctx
->Texture
.Unit
[0]._ReallyEnabled
== TEXTURE_2D_BIT
&&
946 ctx
->Texture
.Unit
[1]._ReallyEnabled
== TEXTURE_2D_BIT
)) {
947 mmesa
->setup
.wflag
= mmesa
->hw
.cull_dualtex
;
950 mmesa
->setup
.wflag
= mmesa
->hw
.cull
;
954 mmesa
->setup
.stencil
= mmesa
->hw
.stencil
955 & mmesa
->hw
.stencil_enable
;
956 mmesa
->setup
.stencilctl
= mmesa
->hw
.stencilctl
957 & mmesa
->hw
.stencil_enable
;
959 /* If depth testing is not enabled, then use the no Z-compare / no
960 * Z-write mode. Otherwise, use whatever is set in hw.zmode.
962 mmesa
->setup
.dwgctl
&= (DC_zmode_MASK
& DC_atype_MASK
);
963 mmesa
->setup
.dwgctl
|= (ctx
->Depth
.Test
)
964 ? mmesa
->hw
.zmode
: (DC_zmode_nozcmp
| DC_atype_i
);
966 mmesa
->setup
.dwgctl
&= DC_bop_MASK
;
967 mmesa
->setup
.dwgctl
|= RGBA_LOGICOP_ENABLED(ctx
)
968 ? mmesa
->hw
.rop
: mgarop_NoBLK
[ GL_COPY
& 0x0f ];
970 mmesa
->setup
.alphactrl
&= AC_src_MASK
& AC_dst_MASK
& AC_atmode_MASK
971 & AC_atref_MASK
& AC_alphasel_MASK
;
972 mmesa
->setup
.alphactrl
|=
973 (mmesa
->hw
.alpha_func
& mmesa
->hw
.alpha_func_enable
) |
974 (mmesa
->hw
.blend_func
& mmesa
->hw
.blend_func_enable
) |
975 ((AC_src_one
| AC_dst_zero
) & ~mmesa
->hw
.blend_func_enable
) |
978 memcpy( &sarea
->context_state
, &mmesa
->setup
, sizeof(mmesa
->setup
));
981 if ((mmesa
->dirty
& MGA_UPLOAD_TEX0
) && mmesa
->CurrentTexObj
[0]) {
982 memcpy(&sarea
->tex_state
[0],
983 &mmesa
->CurrentTexObj
[0]->setup
,
984 sizeof(sarea
->tex_state
[0]));
987 if ((mmesa
->dirty
& MGA_UPLOAD_TEX1
) && mmesa
->CurrentTexObj
[1]) {
988 memcpy(&sarea
->tex_state
[1],
989 &mmesa
->CurrentTexObj
[1]->setup
,
990 sizeof(sarea
->tex_state
[1]));
993 if (mmesa
->dirty
& (MGA_UPLOAD_TEX0
| MGA_UPLOAD_TEX1
)) {
994 sarea
->tex_state
[0].texctl2
&= ~TMC_specen_enable
;
995 sarea
->tex_state
[1].texctl2
&= ~TMC_specen_enable
;
996 sarea
->tex_state
[0].texctl2
|= mmesa
->hw
.specen
;
997 sarea
->tex_state
[1].texctl2
|= mmesa
->hw
.specen
;
1000 if (mmesa
->dirty
& MGA_UPLOAD_PIPE
) {
1001 /* mmesa->sarea->wacceptseq = mmesa->hw_primitive; */
1002 mmesa
->sarea
->warp_pipe
= mmesa
->vertex_format
;
1003 mmesa
->sarea
->vertsize
= mmesa
->vertex_size
;
1006 mmesa
->sarea
->dirty
|= mmesa
->dirty
;
1007 mmesa
->dirty
&= MGA_UPLOAD_CLIPRECTS
;
1010 /* =============================================================
1014 static void mgaDDValidateState( GLcontext
*ctx
)
1016 mgaContextPtr mmesa
= MGA_CONTEXT( ctx
);
1018 FLUSH_BATCH( mmesa
);
1020 if (mmesa
->NewGLState
& _NEW_TEXTURE
) {
1021 mgaUpdateTextureState(ctx
);
1024 if (!mmesa
->Fallback
) {
1025 if (mmesa
->NewGLState
& _MGA_NEW_RASTERSETUP
) {
1026 mgaChooseVertexState( ctx
);
1029 if (mmesa
->NewGLState
& _MGA_NEW_RENDERSTATE
) {
1030 mgaChooseRenderState( ctx
);
1034 mmesa
->NewGLState
= 0;
1038 static void mgaDDInvalidateState( GLcontext
*ctx
, GLuint new_state
)
1040 _swrast_InvalidateState( ctx
, new_state
);
1041 _swsetup_InvalidateState( ctx
, new_state
);
1042 _vbo_InvalidateState( ctx
, new_state
);
1043 _tnl_InvalidateState( ctx
, new_state
);
1044 MGA_CONTEXT(ctx
)->NewGLState
|= new_state
;
1048 static void mgaRunPipeline( GLcontext
*ctx
)
1050 mgaContextPtr mmesa
= MGA_CONTEXT(ctx
);
1052 if (mmesa
->NewGLState
) {
1053 mgaDDValidateState( ctx
);
1057 mgaEmitHwStateLocked( mmesa
);
1060 _tnl_run_pipeline( ctx
);
1064 void mgaInitState( mgaContextPtr mmesa
)
1066 mgaScreenPrivate
*mgaScreen
= mmesa
->mgaScreen
;
1067 GLcontext
*ctx
= mmesa
->glCtx
;
1069 if (ctx
->Visual
.doubleBufferMode
) {
1070 /* use back buffer by default */
1071 mmesa
->draw_buffer
= MGA_BACK
;
1072 mmesa
->drawOffset
= mmesa
->mgaScreen
->backOffset
;
1073 mmesa
->readOffset
= mmesa
->mgaScreen
->backOffset
;
1074 mmesa
->setup
.dstorg
= mgaScreen
->backOffset
;
1076 /* use front buffer by default */
1077 mmesa
->draw_buffer
= MGA_FRONT
;
1078 mmesa
->drawOffset
= mmesa
->mgaScreen
->frontOffset
;
1079 mmesa
->readOffset
= mmesa
->mgaScreen
->frontOffset
;
1080 mmesa
->setup
.dstorg
= mgaScreen
->frontOffset
;
1083 mmesa
->setup
.maccess
= (MA_memreset_disable
|
1085 MA_tlutload_disable
|
1086 MA_nodither_disable
|
1088 if (driQueryOptioni (&mmesa
->optionCache
, "color_reduction") !=
1089 DRI_CONF_COLOR_REDUCTION_DITHER
)
1090 mmesa
->setup
.maccess
|= MA_nodither_enable
;
1092 switch (mmesa
->mgaScreen
->cpp
) {
1094 mmesa
->setup
.maccess
|= MA_pwidth_16
;
1097 mmesa
->setup
.maccess
|= MA_pwidth_32
;
1100 fprintf( stderr
, "Error: unknown cpp %d, exiting...\n",
1101 mmesa
->mgaScreen
->cpp
);
1105 switch (mmesa
->glCtx
->Visual
.depthBits
) {
1107 mmesa
->setup
.maccess
|= MA_zwidth_16
;
1110 mmesa
->setup
.maccess
|= MA_zwidth_24
;
1113 mmesa
->setup
.maccess
|= MA_zwidth_32
;
1117 mmesa
->hw
.blend_func
= AC_src_one
| AC_dst_zero
;
1118 mmesa
->hw
.blend_func_enable
= 0;
1119 mmesa
->hw
.alpha_func
= AC_atmode_noacmp
| MGA_FIELD( AC_atref
, 0x00 );
1120 mmesa
->hw
.alpha_func_enable
= 0;
1121 mmesa
->hw
.rop
= mgarop_NoBLK
[ GL_COPY
& 0x0f ];
1122 mmesa
->hw
.zmode
= DC_zmode_zlt
| DC_atype_zi
;
1123 mmesa
->hw
.stencil
= MGA_FIELD( S_sref
, 0x00) | MGA_FIELD( S_smsk
, 0xff ) |
1124 MGA_FIELD( S_swtmsk
, 0xff );
1125 mmesa
->hw
.stencilctl
= SC_smode_salways
| SC_sfailop_keep
1126 | SC_szfailop_keep
| SC_szpassop_keep
;
1127 mmesa
->hw
.stencil_enable
= 0;
1128 mmesa
->hw
.cull
= _CULL_DISABLE
;
1129 mmesa
->hw
.cull_dualtex
= _CULL_DISABLE
;
1130 mmesa
->hw
.specen
= 0;
1131 mmesa
->hw
.alpha_sel
= AC_alphasel_diffused
;
1133 mmesa
->setup
.dwgctl
= (DC_opcod_trap
|
1137 DC_sgnzero_disable
|
1138 DC_shftzero_enable
|
1139 MGA_FIELD( DC_bop
, 0xC ) |
1140 MGA_FIELD( DC_trans
, 0x0 ) |
1141 DC_bltmod_bmonolef
|
1142 DC_pattern_disable
|
1144 DC_clipdis_disable
);
1146 mmesa
->setup
.plnwt
= ~0;
1147 mmesa
->setup
.alphactrl
= (AC_amode_alpha_channel
|
1148 AC_astipple_disable
|
1151 mmesa
->setup
.fogcolor
= PACK_COLOR_888((GLubyte
)(ctx
->Fog
.Color
[0]*255.0F
),
1152 (GLubyte
)(ctx
->Fog
.Color
[1]*255.0F
),
1153 (GLubyte
)(ctx
->Fog
.Color
[2]*255.0F
));
1155 mmesa
->setup
.wflag
= 0;
1156 mmesa
->setup
.tdualstage0
= 0;
1157 mmesa
->setup
.tdualstage1
= 0;
1158 mmesa
->setup
.fcol
= 0;
1159 mmesa
->dirty
|= MGA_UPLOAD_CONTEXT
;
1161 mmesa
->envcolor
[0] = 0;
1162 mmesa
->envcolor
[1] = 0;
1166 void mgaDDInitStateFuncs( GLcontext
*ctx
)
1168 ctx
->Driver
.UpdateState
= mgaDDInvalidateState
;
1169 ctx
->Driver
.Enable
= mgaDDEnable
;
1170 ctx
->Driver
.LightModelfv
= mgaDDLightModelfv
;
1171 ctx
->Driver
.AlphaFunc
= mgaDDAlphaFunc
;
1172 ctx
->Driver
.BlendEquationSeparate
= mgaDDBlendEquationSeparate
;
1173 ctx
->Driver
.BlendFuncSeparate
= mgaDDBlendFuncSeparate
;
1174 ctx
->Driver
.DepthFunc
= mgaDDDepthFunc
;
1175 ctx
->Driver
.DepthMask
= mgaDDDepthMask
;
1176 ctx
->Driver
.Fogfv
= mgaDDFogfv
;
1177 ctx
->Driver
.Scissor
= mgaDDScissor
;
1178 ctx
->Driver
.CullFace
= mgaDDCullFaceFrontFace
;
1179 ctx
->Driver
.FrontFace
= mgaDDCullFaceFrontFace
;
1180 ctx
->Driver
.ColorMask
= mgaDDColorMask
;
1182 ctx
->Driver
.DrawBuffer
= mgaDDDrawBuffer
;
1183 ctx
->Driver
.ReadBuffer
= mgaDDReadBuffer
;
1184 ctx
->Driver
.ClearColor
= mgaDDClearColor
;
1185 ctx
->Driver
.ClearDepth
= mgaDDClearDepth
;
1186 ctx
->Driver
.LogicOpcode
= mgaDDLogicOp
;
1188 ctx
->Driver
.PolygonStipple
= mgaDDPolygonStipple
;
1190 ctx
->Driver
.StencilFuncSeparate
= mgaDDStencilFuncSeparate
;
1191 ctx
->Driver
.StencilMaskSeparate
= mgaDDStencilMaskSeparate
;
1192 ctx
->Driver
.StencilOpSeparate
= mgaDDStencilOpSeparate
;
1194 ctx
->Driver
.DepthRange
= mgaDepthRange
;
1195 ctx
->Driver
.Viewport
= mgaViewport
;
1196 ctx
->Driver
.RenderMode
= mgaRenderMode
;
1198 ctx
->Driver
.ClearIndex
= 0;
1199 ctx
->Driver
.IndexMask
= 0;
1201 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= mgaRunPipeline
;