Make XPFragmentBuilder only Builder with access to DstCopy.

src/gpu/effects/GrConvexPolyEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrConvexPolyEffect.h"
 #include "GrInvariantOutput.h"
 #include "SkPath.h"
@@ skipping 104 matching lines @@
     const AARectEffect& aare = fp.cast<AARectEffect>();
     const char *rectName;
     // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bottom - 0.5),
     // respectively.
     fRectUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                        kVec4f_GrSLType,
                                        kDefault_GrSLPrecision,
                                        "rect",
                                        &rectName);
 
-    GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+    GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
     const char* fragmentPos = fsBuilder->fragmentPosition();
     if (GrProcessorEdgeTypeIsAA(aare.getEdgeType())) {
         // The amount of coverage removed in x and y by the edges is computed as a pair of negative
         // numbers, xSub and ySub.
         fsBuilder->codeAppend("\t\tfloat xSub, ySub;\n");
         fsBuilder->codeAppendf("\t\txSub = min(%s.x - %s.x, 0.0);\n", fragmentPos, rectName);
         fsBuilder->codeAppendf("\t\txSub += min(%s.z - %s.x, 0.0);\n", rectName, fragmentPos);
         fsBuilder->codeAppendf("\t\tySub = min(%s.y - %s.y, 0.0);\n", fragmentPos, rectName);
         fsBuilder->codeAppendf("\t\tySub += min(%s.w - %s.y, 0.0);\n", rectName, fragmentPos);
         // Now compute coverage in x and y and multiply them to get the fraction of the pixel
@@ skipping 73 matching lines @@
                                     const TextureSamplerArray& samplers) {
     const GrConvexPolyEffect& cpe = fp.cast<GrConvexPolyEffect>();
 
     const char *edgeArrayName;
     fEdgeUniform = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility,
                                             kVec3f_GrSLType,
                                              kDefault_GrSLPrecision,
                                              "edges",
                                             cpe.getEdgeCount(),
                                             &edgeArrayName);
-    GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+    GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
     fsBuilder->codeAppend("\t\tfloat alpha = 1.0;\n");
     fsBuilder->codeAppend("\t\tfloat edge;\n");
     const char* fragmentPos = fsBuilder->fragmentPosition();
     for (int i = 0; i < cpe.getEdgeCount(); ++i) {
         fsBuilder->codeAppendf("\t\tedge = dot(%s[%d], vec3(%s.x, %s.y, 1));\n",
                                edgeArrayName, i, fragmentPos, fragmentPos);
         if (GrProcessorEdgeTypeIsAA(cpe.getEdgeType())) {
             fsBuilder->codeAppend("\t\tedge = clamp(edge, 0.0, 1.0);\n");
         } else {
             fsBuilder->codeAppend("\t\tedge = edge >= 0.5 ? 1.0 : 0.0;\n");
@@ skipping 142 matching lines @@
     }
 
     GrFragmentProcessor* fp;
     do {
         GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>(
                                         random->nextULessThan(kGrProcessorEdgeTypeCnt));
         fp = GrConvexPolyEffect::Create(edgeType, count, edges);
     } while (NULL == fp);
     return fp;
 }