X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fstate_tracker%2Fst_atom_blend.c;h=6bb4077f3709ae0d36137ce9e15a5a6ef8202efb;hb=9286cbdd1e2b0ef32db61f0fb4915ea2948ad4cd;hp=a8ec4adce775b92a37e22f53af8e7532c79c8c5c;hpb=4926c5748028d33da4808f8a5473aa7b2f2bdc62;p=mesa.git

diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index a8ec4adce77..6bb4077f370 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -1,6 +1,6 @@
 /**************************************************************************
  * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -18,7 +18,7 @@
  * 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
+ * IN NO EVENT SHALL VMWARE 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.
@@ -27,7 +27,7 @@
 
  /*
   * Authors:
-  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Keith Whitwell <keithw@vmware.com>
   *   Brian Paul
   */
  
@@ -78,10 +78,10 @@ translate_blend(GLenum blend)
       return PIPE_BLENDFACTOR_CONST_COLOR;
    case GL_CONSTANT_ALPHA:
       return PIPE_BLENDFACTOR_CONST_ALPHA;
-      /*
+   case GL_SRC1_COLOR:
       return PIPE_BLENDFACTOR_SRC1_COLOR;
+   case GL_SRC1_ALPHA:
       return PIPE_BLENDFACTOR_SRC1_ALPHA;
-      */
    case GL_ZERO:
       return PIPE_BLENDFACTOR_ZERO;
    case GL_ONE_MINUS_SRC_COLOR:
@@ -96,10 +96,10 @@ translate_blend(GLenum blend)
       return PIPE_BLENDFACTOR_INV_CONST_COLOR;
    case GL_ONE_MINUS_CONSTANT_ALPHA:
       return PIPE_BLENDFACTOR_INV_CONST_ALPHA;
-      /*
+   case GL_ONE_MINUS_SRC1_COLOR:
       return PIPE_BLENDFACTOR_INV_SRC1_COLOR;
+   case GL_ONE_MINUS_SRC1_ALPHA:
       return PIPE_BLENDFACTOR_INV_SRC1_ALPHA;
-      */
    default:
       assert("invalid GL token in translate_blend()" == NULL);
       return 0;
@@ -156,7 +156,7 @@ translate_logicop(GLenum logicop)
  * Figure out if colormasks are different per rt.
  */
 static GLboolean
-colormask_per_rt(struct gl_context *ctx)
+colormask_per_rt(const struct gl_context *ctx)
 {
    /* a bit suboptimal have to compare lots of values */
    unsigned i;
@@ -169,13 +169,18 @@ colormask_per_rt(struct gl_context *ctx)
 }
 
 /**
- * Figure out if blend enables are different per rt.
+ * Figure out if blend enables/state are different per rt.
  */
 static GLboolean
-blend_per_rt(struct gl_context *ctx)
+blend_per_rt(const struct gl_context *ctx)
 {
    if (ctx->Color.BlendEnabled &&
-      (ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {
+      (ctx->Color.BlendEnabled != ((1U << 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;
@@ -185,56 +190,60 @@ static void
 update_blend( struct st_context *st )
 {
    struct pipe_blend_state *blend = &st->state.blend;
+   const struct gl_context *ctx = st->ctx;
    unsigned num_state = 1;
-   unsigned i;
+   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;
+   if (blend_per_rt(ctx) || colormask_per_rt(ctx)) {
+      num_state = 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.BlendEquationRGB == GL_LOGIC_OP)) {
+   if (ctx->Color.ColorLogicOpEnabled) {
       /* logicop enabled */
       blend->logicop_enable = 1;
-      blend->logicop_func = translate_logicop(st->ctx->Color.LogicOp);
+      blend->logicop_func = translate_logicop(ctx->Color.LogicOp);
    }
-   else if (st->ctx->Color.BlendEnabled) {
+   else if (ctx->Color.BlendEnabled) {
       /* blending enabled */
-      for (i = 0; i < num_state; i++) {
+      for (i = 0, j = 0; i < num_state; i++) {
 
-         blend->rt[i].blend_enable = (st->ctx->Color.BlendEnabled >> i) & 0x1;
+         blend->rt[i].blend_enable = (ctx->Color.BlendEnabled >> i) & 0x1;
 
-         blend->rt[i].rgb_func = translate_blend(st->ctx->Color.BlendEquationRGB);
-         if (st->ctx->Color.BlendEquationRGB == GL_MIN ||
-             st->ctx->Color.BlendEquationRGB == GL_MAX) {
+         if (ctx->Extensions.ARB_draw_buffers_blend)
+            j = i;
+
+         blend->rt[i].rgb_func =
+            translate_blend(ctx->Color.Blend[j].EquationRGB);
+
+         if (ctx->Color.Blend[i].EquationRGB == GL_MIN ||
+             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.BlendSrcRGB);
-            blend->rt[i].rgb_dst_factor = translate_blend(st->ctx->Color.BlendDstRGB);
+            blend->rt[i].rgb_src_factor =
+               translate_blend(ctx->Color.Blend[j].SrcRGB);
+            blend->rt[i].rgb_dst_factor =
+               translate_blend(ctx->Color.Blend[j].DstRGB);
          }
 
-         blend->rt[i].alpha_func = translate_blend(st->ctx->Color.BlendEquationA);
-         if (st->ctx->Color.BlendEquationA == GL_MIN ||
-             st->ctx->Color.BlendEquationA == GL_MAX) {
+         blend->rt[i].alpha_func =
+            translate_blend(ctx->Color.Blend[j].EquationA);
+
+         if (ctx->Color.Blend[i].EquationA == GL_MIN ||
+             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.BlendSrcA);
-            blend->rt[i].alpha_dst_factor = translate_blend(st->ctx->Color.BlendDstA);
+            blend->rt[i].alpha_src_factor =
+               translate_blend(ctx->Color.Blend[j].SrcA);
+            blend->rt[i].alpha_dst_factor =
+               translate_blend(ctx->Color.Blend[j].DstA);
          }
       }
    }
@@ -244,33 +253,30 @@ update_blend( struct st_context *st )
 
    /* Colormask - maybe reverse these bits? */
    for (i = 0; i < num_state; i++) {
-      if (st->ctx->Color.ColorMask[i][0])
+      if (ctx->Color.ColorMask[i][0])
          blend->rt[i].colormask |= PIPE_MASK_R;
-      if (st->ctx->Color.ColorMask[i][1])
+      if (ctx->Color.ColorMask[i][1])
          blend->rt[i].colormask |= PIPE_MASK_G;
-      if (st->ctx->Color.ColorMask[i][2])
+      if (ctx->Color.ColorMask[i][2])
          blend->rt[i].colormask |= PIPE_MASK_B;
-      if (st->ctx->Color.ColorMask[i][3])
+      if (ctx->Color.ColorMask[i][3])
          blend->rt[i].colormask |= PIPE_MASK_A;
    }
 
-   if (st->ctx->Color.DitherFlag)
-      blend->dither = 1;
+   blend->dither = ctx->Color.DitherFlag;
 
-   if (st->ctx->Multisample.Enabled) {
+   if (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;
+      blend->alpha_to_coverage = ctx->Multisample.SampleAlphaToCoverage;
+      blend->alpha_to_one = ctx->Multisample.SampleAlphaToOne;
    }
 
    cso_set_blend(st->cso_context, blend);
 
    {
       struct pipe_blend_color bc;
-      COPY_4FV(bc.color, st->ctx->Color.BlendColor);
+      COPY_4FV(bc.color, ctx->Color.BlendColorUnclamped);
       cso_set_blend_color(st->cso_context, &bc);
    }
 }