Make GrGLSLProgramBuilder base class for ProgramBuilder

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 "SkPathPriv.h"
@@ skipping 194 matching lines @@
         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");
         }
         fsBuilder->codeAppend("\t\talpha *= edge;\n");
     }
 
-    // Woe is me. See https://bug.skia.org/2149 .
-    if (kTegra2_GrGLRenderer == args.fBuilder->ctxInfo().renderer()) {
-        fsBuilder->codeAppend("\t\tif (-1.0 == alpha) {\n\t\t\tdiscard;\n\t\t}\n");
-    }
-
     if (GrProcessorEdgeTypeIsInverseFill(cpe.getEdgeType())) {
         fsBuilder->codeAppend("\talpha = 1.0 - alpha;\n");
     }
     fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutputColor,
                            (GrGLSLExpr4(args.fInputColor) * GrGLSLExpr1("alpha")).c_str());
 }
 
 void GrGLConvexPolyEffect::onSetData(const GrGLSLProgramDataManager& pdman,
                                      const GrProcessor& effect) {
     const GrConvexPolyEffect& cpe = effect.cast<GrConvexPolyEffect>();
@@ skipping 121 matching lines @@
     }
 
     GrFragmentProcessor* fp;
     do {
         GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>(
                 d->fRandom->nextULessThan(kGrProcessorEdgeTypeCnt));
         fp = GrConvexPolyEffect::Create(edgeType, count, edges);
     } while (nullptr == fp);
     return fp;
 }