Create xfer processor backend.

src/gpu/gl/GrGpuGL.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGpuGL.h"
 #include "GrGLStencilBuffer.h"
@@ skipping 1901 matching lines @@
             } else {
                 if (kNo_TriState != fMSAAEnabled) {
                     GL_CALL(Disable(GR_GL_MULTISAMPLE));
                     fMSAAEnabled = kNo_TriState;
                 }
             }
         }
     }
 }
 
-void GrGpuGL::flushBlend(const GrOptDrawState& optState, bool isLines,
-                         GrBlendCoeff srcCoeff, GrBlendCoeff dstCoeff) {
+void GrGpuGL::flushBlend(const GrOptDrawState& optState) {
     // Any optimization to disable blending should have already been applied and
     // tweaked the coeffs to (1, 0).
+    
+    GrXferProcessor::BlendInfo blendInfo;
+    optState.getXferProcessor()->getBlendInfo(&blendInfo);
+    GrBlendCoeff srcCoeff = blendInfo.fSrcBlend;
+    GrBlendCoeff dstCoeff = blendInfo.fDstBlend;
     bool blendOff = kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff;
     if (blendOff) {
         if (kNo_TriState != fHWBlendState.fEnabled) {
             GL_CALL(Disable(GR_GL_BLEND));
             fHWBlendState.fEnabled = kNo_TriState;
         }
     } else {
         if (kYes_TriState != fHWBlendState.fEnabled) {
             GL_CALL(Enable(GR_GL_BLEND));
             fHWBlendState.fEnabled = kYes_TriState;
         }
         if (fHWBlendState.fSrcCoeff != srcCoeff ||
             fHWBlendState.fDstCoeff != dstCoeff) {
             GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff],
                               gXfermodeCoeff2Blend[dstCoeff]));
             fHWBlendState.fSrcCoeff = srcCoeff;
             fHWBlendState.fDstCoeff = dstCoeff;
         }
-        GrColor blendConst = optState.getBlendConstant();
+        GrColor blendConst = blendInfo.fBlendConstant;
         if ((BlendCoeffReferencesConstant(srcCoeff) ||
              BlendCoeffReferencesConstant(dstCoeff)) &&
             (!fHWBlendState.fConstColorValid ||
              fHWBlendState.fConstColor != blendConst)) {
             GrGLfloat c[4];
             GrColorToRGBAFloat(blendConst, c);
             GL_CALL(BlendColor(c[0], c[1], c[2], c[3]));
             fHWBlendState.fConstColor = blendConst;
             fHWBlendState.fConstColorValid = true;
         }
@@ skipping 628 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }