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 */
+};