pixman mesa git update 16 Feb 2011

1 files changed, 302 insertions, 299 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_atom_blend.c b/mesalib/src/mesa/state_tracker/st_atom_blend.c
index 26bb3dab9..fb1c7a4ef 100644
--- a/mesalib/src/mesa/state_tracker/st_atom_blend.c
+++ b/mesalib/src/mesa/state_tracker/st_atom_blend.c
@@ -1,299 +1,302 @@
-/**************************************************************************

- * 

- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

- * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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:

-  *   Keith Whitwell <keith@tungstengraphics.com>

-  *   Brian Paul

-  */

- 

-

-#include "st_context.h"

-#include "st_atom.h"

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "cso_cache/cso_context.h"

-

-#include "main/macros.h"

-

-/**

- * Convert GLenum blend tokens to pipe tokens.

- * Both blend factors and blend funcs are accepted.

- */

-static GLuint

-translate_blend(GLenum blend)

-{

-   switch (blend) {

-   /* blend functions */

-   case GL_FUNC_ADD:

-      return PIPE_BLEND_ADD;

-   case GL_FUNC_SUBTRACT:

-      return PIPE_BLEND_SUBTRACT;

-   case GL_FUNC_REVERSE_SUBTRACT:

-      return PIPE_BLEND_REVERSE_SUBTRACT;

-   case GL_MIN:

-      return PIPE_BLEND_MIN;

-   case GL_MAX:

-      return PIPE_BLEND_MAX;

-

-   /* blend factors */

-   case GL_ONE:

-      return PIPE_BLENDFACTOR_ONE;

-   case GL_SRC_COLOR:

-      return PIPE_BLENDFACTOR_SRC_COLOR;

-   case GL_SRC_ALPHA:

-      return PIPE_BLENDFACTOR_SRC_ALPHA;

-   case GL_DST_ALPHA:

-      return PIPE_BLENDFACTOR_DST_ALPHA;

-   case GL_DST_COLOR:

-      return PIPE_BLENDFACTOR_DST_COLOR;

-   case GL_SRC_ALPHA_SATURATE:

-      return PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE;

-   case GL_CONSTANT_COLOR:

-      return PIPE_BLENDFACTOR_CONST_COLOR;

-   case GL_CONSTANT_ALPHA:

-      return PIPE_BLENDFACTOR_CONST_ALPHA;

-      /*

-      return PIPE_BLENDFACTOR_SRC1_COLOR;

-      return PIPE_BLENDFACTOR_SRC1_ALPHA;

-      */

-   case GL_ZERO:

-      return PIPE_BLENDFACTOR_ZERO;

-   case GL_ONE_MINUS_SRC_COLOR:

-      return PIPE_BLENDFACTOR_INV_SRC_COLOR;

-   case GL_ONE_MINUS_SRC_ALPHA:

-      return PIPE_BLENDFACTOR_INV_SRC_ALPHA;

-   case GL_ONE_MINUS_DST_COLOR:

-      return PIPE_BLENDFACTOR_INV_DST_COLOR;

-   case GL_ONE_MINUS_DST_ALPHA:

-      return PIPE_BLENDFACTOR_INV_DST_ALPHA;

-   case GL_ONE_MINUS_CONSTANT_COLOR:

-      return PIPE_BLENDFACTOR_INV_CONST_COLOR;

-   case GL_ONE_MINUS_CONSTANT_ALPHA:

-      return PIPE_BLENDFACTOR_INV_CONST_ALPHA;

-      /*

-      return PIPE_BLENDFACTOR_INV_SRC1_COLOR;

-      return PIPE_BLENDFACTOR_INV_SRC1_ALPHA;

-      */

-   default:

-      assert("invalid GL token in translate_blend()" == NULL);

-      return 0;

-   }

-}

-

-

-/**

- * Convert GLenum logicop tokens to pipe tokens.

- */

-static GLuint

-translate_logicop(GLenum logicop)

-{

-   switch (logicop) {

-   case GL_CLEAR:

-      return PIPE_LOGICOP_CLEAR;

-   case GL_NOR:

-      return PIPE_LOGICOP_NOR;

-   case GL_AND_INVERTED:

-      return PIPE_LOGICOP_AND_INVERTED;

-   case GL_COPY_INVERTED:

-      return PIPE_LOGICOP_COPY_INVERTED;

-   case GL_AND_REVERSE:

-      return PIPE_LOGICOP_AND_REVERSE;

-   case GL_INVERT:

-      return PIPE_LOGICOP_INVERT;

-   case GL_XOR:

-      return PIPE_LOGICOP_XOR;

-   case GL_NAND:

-      return PIPE_LOGICOP_NAND;

-   case GL_AND:

-      return PIPE_LOGICOP_AND;

-   case GL_EQUIV:

-      return PIPE_LOGICOP_EQUIV;

-   case GL_NOOP:

-      return PIPE_LOGICOP_NOOP;

-   case GL_OR_INVERTED:

-      return PIPE_LOGICOP_OR_INVERTED;

-   case GL_COPY:

-      return PIPE_LOGICOP_COPY;

-   case GL_OR_REVERSE:

-      return PIPE_LOGICOP_OR_REVERSE;

-   case GL_OR:

-      return PIPE_LOGICOP_OR;

-   case GL_SET:

-      return PIPE_LOGICOP_SET;

-   default:

-      assert("invalid GL token in translate_logicop()" == NULL);

-      return 0;

-   }

-}

-

-/**

- * Figure out if colormasks are different per rt.

- */

-static GLboolean

-colormask_per_rt(struct gl_context *ctx)

-{

-   /* a bit suboptimal have to compare lots of values */

-   unsigned i;

-   for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {

-      if (memcmp(ctx->Color.ColorMask[0], ctx->Color.ColorMask[i], 4)) {

-         return GL_TRUE;

-      }

-   }

-   return GL_FALSE;

-}

-

-/**

- * Figure out if blend enables/state are different per rt.

- */

-static GLboolean

-blend_per_rt(struct gl_context *ctx)

-{

-   if (ctx->Color.BlendEnabled &&

-      (ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {

-      /* This can only happen if GL_EXT_draw_buffers2 is enabled */

-      return GL_TRUE;

-   }

-   if (ctx->Color._BlendFuncPerBuffer || ctx->Color._BlendEquationPerBuffer) {

-      /* this can only happen if GL_ARB_draw_buffers_blend is enabled */

-      return GL_TRUE;

-   }

-   return GL_FALSE;

-}

-

-static void 

-update_blend( struct st_context *st )

-{

-   struct pipe_blend_state *blend = &st->state.blend;

-   unsigned num_state = 1;

-   unsigned i;

-

-   memset(blend, 0, sizeof(*blend));

-

-   if (blend_per_rt(st->ctx) || colormask_per_rt(st->ctx)) {

-      num_state = st->ctx->Const.MaxDrawBuffers;

-      blend->independent_blend_enable = 1;

-   }

-   /* Note it is impossible to correctly deal with EXT_blend_logic_op and

-      EXT_draw_buffers2/EXT_blend_equation_separate at the same time.

-      These combinations would require support for per-rt logicop enables

-      and separate alpha/rgb logicop/blend support respectively. Neither

-      possible in gallium nor most hardware. Assume these combinations

-      don't happen. */

-   if (st->ctx->Color.ColorLogicOpEnabled ||

-       (st->ctx->Color.BlendEnabled &&

-        st->ctx->Color.Blend[0].EquationRGB == GL_LOGIC_OP)) {

-      /* logicop enabled */

-      blend->logicop_enable = 1;

-      blend->logicop_func = translate_logicop(st->ctx->Color.LogicOp);

-   }

-   else if (st->ctx->Color.BlendEnabled) {

-      /* blending enabled */

-      for (i = 0; i < num_state; i++) {

-

-         blend->rt[i].blend_enable = (st->ctx->Color.BlendEnabled >> i) & 0x1;

-

-         blend->rt[i].rgb_func =

-            translate_blend(st->ctx->Color.Blend[i].EquationRGB);

-

-         if (st->ctx->Color.Blend[i].EquationRGB == GL_MIN ||

-             st->ctx->Color.Blend[i].EquationRGB == GL_MAX) {

-            /* Min/max are special */

-            blend->rt[i].rgb_src_factor = PIPE_BLENDFACTOR_ONE;

-            blend->rt[i].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;

-         }

-         else {

-            blend->rt[i].rgb_src_factor =

-               translate_blend(st->ctx->Color.Blend[i].SrcRGB);

-            blend->rt[i].rgb_dst_factor =

-               translate_blend(st->ctx->Color.Blend[i].DstRGB);

-         }

-

-         blend->rt[i].alpha_func =

-            translate_blend(st->ctx->Color.Blend[i].EquationA);

-

-         if (st->ctx->Color.Blend[i].EquationA == GL_MIN ||

-             st->ctx->Color.Blend[i].EquationA == GL_MAX) {

-            /* Min/max are special */

-            blend->rt[i].alpha_src_factor = PIPE_BLENDFACTOR_ONE;

-            blend->rt[i].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;

-         }

-         else {

-            blend->rt[i].alpha_src_factor =

-               translate_blend(st->ctx->Color.Blend[i].SrcA);

-            blend->rt[i].alpha_dst_factor =

-               translate_blend(st->ctx->Color.Blend[i].DstA);

-         }

-      }

-   }

-   else {

-      /* no blending / logicop */

-   }

-

-   /* Colormask - maybe reverse these bits? */

-   for (i = 0; i < num_state; i++) {

-      if (st->ctx->Color.ColorMask[i][0])

-         blend->rt[i].colormask |= PIPE_MASK_R;

-      if (st->ctx->Color.ColorMask[i][1])

-         blend->rt[i].colormask |= PIPE_MASK_G;

-      if (st->ctx->Color.ColorMask[i][2])

-         blend->rt[i].colormask |= PIPE_MASK_B;

-      if (st->ctx->Color.ColorMask[i][3])

-         blend->rt[i].colormask |= PIPE_MASK_A;

-   }

-

-   if (st->ctx->Color.DitherFlag)

-      blend->dither = 1;

-

-   if (st->ctx->Multisample.Enabled) {

-      /* unlike in gallium/d3d10 these operations are only performed

-         if msaa is enabled */

-      if (st->ctx->Multisample.SampleAlphaToCoverage)

-         blend->alpha_to_coverage = 1;

-      if (st->ctx->Multisample.SampleAlphaToOne)

-         blend->alpha_to_one = 1;

-   }

-

-   cso_set_blend(st->cso_context, blend);

-

-   {

-      struct pipe_blend_color bc;

-      COPY_4FV(bc.color, st->ctx->Color.BlendColor);

-      cso_set_blend_color(st->cso_context, &bc);

-   }

-}

-

-

-const struct st_tracked_state st_update_blend = {

-   "st_update_blend",					/* name */

-   {							/* dirty */

-      (_NEW_COLOR | _NEW_MULTISAMPLE),  /* XXX _NEW_BLEND someday? */	/* mesa */

-      0,						/* st */

-   },

-   update_blend,					/* update */

-};

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+ 
+
+#include "st_context.h"
+#include "st_atom.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "cso_cache/cso_context.h"
+
+#include "main/macros.h"
+
+/**
+ * Convert GLenum blend tokens to pipe tokens.
+ * Both blend factors and blend funcs are accepted.
+ */
+static GLuint
+translate_blend(GLenum blend)
+{
+   switch (blend) {
+   /* blend functions */
+   case GL_FUNC_ADD:
+      return PIPE_BLEND_ADD;
+   case GL_FUNC_SUBTRACT:
+      return PIPE_BLEND_SUBTRACT;
+   case GL_FUNC_REVERSE_SUBTRACT:
+      return PIPE_BLEND_REVERSE_SUBTRACT;
+   case GL_MIN:
+      return PIPE_BLEND_MIN;
+   case GL_MAX:
+      return PIPE_BLEND_MAX;
+
+   /* blend factors */
+   case GL_ONE:
+      return PIPE_BLENDFACTOR_ONE;
+   case GL_SRC_COLOR:
+      return PIPE_BLENDFACTOR_SRC_COLOR;
+   case GL_SRC_ALPHA:
+      return PIPE_BLENDFACTOR_SRC_ALPHA;
+   case GL_DST_ALPHA:
+      return PIPE_BLENDFACTOR_DST_ALPHA;
+   case GL_DST_COLOR:
+      return PIPE_BLENDFACTOR_DST_COLOR;
+   case GL_SRC_ALPHA_SATURATE:
+      return PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE;
+   case GL_CONSTANT_COLOR:
+      return PIPE_BLENDFACTOR_CONST_COLOR;
+   case GL_CONSTANT_ALPHA:
+      return PIPE_BLENDFACTOR_CONST_ALPHA;
+      /*
+      return PIPE_BLENDFACTOR_SRC1_COLOR;
+      return PIPE_BLENDFACTOR_SRC1_ALPHA;
+      */
+   case GL_ZERO:
+      return PIPE_BLENDFACTOR_ZERO;
+   case GL_ONE_MINUS_SRC_COLOR:
+      return PIPE_BLENDFACTOR_INV_SRC_COLOR;
+   case GL_ONE_MINUS_SRC_ALPHA:
+      return PIPE_BLENDFACTOR_INV_SRC_ALPHA;
+   case GL_ONE_MINUS_DST_COLOR:
+      return PIPE_BLENDFACTOR_INV_DST_COLOR;
+   case GL_ONE_MINUS_DST_ALPHA:
+      return PIPE_BLENDFACTOR_INV_DST_ALPHA;
+   case GL_ONE_MINUS_CONSTANT_COLOR:
+      return PIPE_BLENDFACTOR_INV_CONST_COLOR;
+   case GL_ONE_MINUS_CONSTANT_ALPHA:
+      return PIPE_BLENDFACTOR_INV_CONST_ALPHA;
+      /*
+      return PIPE_BLENDFACTOR_INV_SRC1_COLOR;
+      return PIPE_BLENDFACTOR_INV_SRC1_ALPHA;
+      */
+   default:
+      assert("invalid GL token in translate_blend()" == NULL);
+      return 0;
+   }
+}
+
+
+/**
+ * Convert GLenum logicop tokens to pipe tokens.
+ */
+static GLuint
+translate_logicop(GLenum logicop)
+{
+   switch (logicop) {
+   case GL_CLEAR:
+      return PIPE_LOGICOP_CLEAR;
+   case GL_NOR:
+      return PIPE_LOGICOP_NOR;
+   case GL_AND_INVERTED:
+      return PIPE_LOGICOP_AND_INVERTED;
+   case GL_COPY_INVERTED:
+      return PIPE_LOGICOP_COPY_INVERTED;
+   case GL_AND_REVERSE:
+      return PIPE_LOGICOP_AND_REVERSE;
+   case GL_INVERT:
+      return PIPE_LOGICOP_INVERT;
+   case GL_XOR:
+      return PIPE_LOGICOP_XOR;
+   case GL_NAND:
+      return PIPE_LOGICOP_NAND;
+   case GL_AND:
+      return PIPE_LOGICOP_AND;
+   case GL_EQUIV:
+      return PIPE_LOGICOP_EQUIV;
+   case GL_NOOP:
+      return PIPE_LOGICOP_NOOP;
+   case GL_OR_INVERTED:
+      return PIPE_LOGICOP_OR_INVERTED;
+   case GL_COPY:
+      return PIPE_LOGICOP_COPY;
+   case GL_OR_REVERSE:
+      return PIPE_LOGICOP_OR_REVERSE;
+   case GL_OR:
+      return PIPE_LOGICOP_OR;
+   case GL_SET:
+      return PIPE_LOGICOP_SET;
+   default:
+      assert("invalid GL token in translate_logicop()" == NULL);
+      return 0;
+   }
+}
+
+/**
+ * Figure out if colormasks are different per rt.
+ */
+static GLboolean
+colormask_per_rt(struct gl_context *ctx)
+{
+   /* a bit suboptimal have to compare lots of values */
+   unsigned i;
+   for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
+      if (memcmp(ctx->Color.ColorMask[0], ctx->Color.ColorMask[i], 4)) {
+         return GL_TRUE;
+      }
+   }
+   return GL_FALSE;
+}
+
+/**
+ * Figure out if blend enables/state are different per rt.
+ */
+static GLboolean
+blend_per_rt(struct gl_context *ctx)
+{
+   if (ctx->Color.BlendEnabled &&
+      (ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {
+      /* This can only happen if GL_EXT_draw_buffers2 is enabled */
+      return GL_TRUE;
+   }
+   if (ctx->Color._BlendFuncPerBuffer || ctx->Color._BlendEquationPerBuffer) {
+      /* this can only happen if GL_ARB_draw_buffers_blend is enabled */
+      return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+static void 
+update_blend( struct st_context *st )
+{
+   struct pipe_blend_state *blend = &st->state.blend;
+   unsigned num_state = 1;
+   unsigned i, j;
+
+   memset(blend, 0, sizeof(*blend));
+
+   if (blend_per_rt(st->ctx) || colormask_per_rt(st->ctx)) {
+      num_state = st->ctx->Const.MaxDrawBuffers;
+      blend->independent_blend_enable = 1;
+   }
+   /* Note it is impossible to correctly deal with EXT_blend_logic_op and
+      EXT_draw_buffers2/EXT_blend_equation_separate at the same time.
+      These combinations would require support for per-rt logicop enables
+      and separate alpha/rgb logicop/blend support respectively. Neither
+      possible in gallium nor most hardware. Assume these combinations
+      don't happen. */
+   if (st->ctx->Color.ColorLogicOpEnabled ||
+       (st->ctx->Color.BlendEnabled &&
+        st->ctx->Color.Blend[0].EquationRGB == GL_LOGIC_OP)) {
+      /* logicop enabled */
+      blend->logicop_enable = 1;
+      blend->logicop_func = translate_logicop(st->ctx->Color.LogicOp);
+   }
+   else if (st->ctx->Color.BlendEnabled) {
+      /* blending enabled */
+      for (i = 0, j = 0; i < num_state; i++) {
+
+         blend->rt[i].blend_enable = (st->ctx->Color.BlendEnabled >> i) & 0x1;
+
+         if (st->ctx->Extensions.ARB_draw_buffers_blend)
+            j = i;
+
+         blend->rt[i].rgb_func =
+            translate_blend(st->ctx->Color.Blend[j].EquationRGB);
+
+         if (st->ctx->Color.Blend[i].EquationRGB == GL_MIN ||
+             st->ctx->Color.Blend[i].EquationRGB == GL_MAX) {
+            /* Min/max are special */
+            blend->rt[i].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+            blend->rt[i].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
+         }
+         else {
+            blend->rt[i].rgb_src_factor =
+               translate_blend(st->ctx->Color.Blend[j].SrcRGB);
+            blend->rt[i].rgb_dst_factor =
+               translate_blend(st->ctx->Color.Blend[j].DstRGB);
+         }
+
+         blend->rt[i].alpha_func =
+            translate_blend(st->ctx->Color.Blend[j].EquationA);
+
+         if (st->ctx->Color.Blend[i].EquationA == GL_MIN ||
+             st->ctx->Color.Blend[i].EquationA == GL_MAX) {
+            /* Min/max are special */
+            blend->rt[i].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+            blend->rt[i].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
+         }
+         else {
+            blend->rt[i].alpha_src_factor =
+               translate_blend(st->ctx->Color.Blend[j].SrcA);
+            blend->rt[i].alpha_dst_factor =
+               translate_blend(st->ctx->Color.Blend[j].DstA);
+         }
+      }
+   }
+   else {
+      /* no blending / logicop */
+   }
+
+   /* Colormask - maybe reverse these bits? */
+   for (i = 0; i < num_state; i++) {
+      if (st->ctx->Color.ColorMask[i][0])
+         blend->rt[i].colormask |= PIPE_MASK_R;
+      if (st->ctx->Color.ColorMask[i][1])
+         blend->rt[i].colormask |= PIPE_MASK_G;
+      if (st->ctx->Color.ColorMask[i][2])
+         blend->rt[i].colormask |= PIPE_MASK_B;
+      if (st->ctx->Color.ColorMask[i][3])
+         blend->rt[i].colormask |= PIPE_MASK_A;
+   }
+
+   if (st->ctx->Color.DitherFlag)
+      blend->dither = 1;
+
+   if (st->ctx->Multisample.Enabled) {
+      /* unlike in gallium/d3d10 these operations are only performed
+         if msaa is enabled */
+      if (st->ctx->Multisample.SampleAlphaToCoverage)
+         blend->alpha_to_coverage = 1;
+      if (st->ctx->Multisample.SampleAlphaToOne)
+         blend->alpha_to_one = 1;
+   }
+
+   cso_set_blend(st->cso_context, blend);
+
+   {
+      struct pipe_blend_color bc;
+      COPY_4FV(bc.color, st->ctx->Color.BlendColor);
+      cso_set_blend_color(st->cso_context, &bc);
+   }
+}
+
+
+const struct st_tracked_state st_update_blend = {
+   "st_update_blend",					/* name */
+   {							/* dirty */
+      (_NEW_COLOR | _NEW_MULTISAMPLE),  /* XXX _NEW_BLEND someday? */	/* mesa */
+      0,						/* st */
+   },
+   update_blend,					/* update */
+};