Potentially optimize some GrGLEffects for known input color values

src/gpu/gl/GrGLProgramEffects.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLProgramEffects.h"
 #include "GrDrawEffect.h"
 #include "gl/GrGLEffect.h"
@@ skipping 245 matching lines @@
                          static_cast<GrGLTexture*>(textureAccess.getTexture()));
     }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrGLVertexProgramEffects::emitEffect(GrGLFullShaderBuilder* builder,
                                           const GrEffectStage& stage,
                                           EffectKey key,
                                           const char* outColor,
-                                          const char* inColor,
+                                          const GrGLSLExpr4& inColor,
                                           int stageIndex) {
     GrDrawEffect drawEffect(stage, fHasExplicitLocalCoords);
     const GrEffectRef& effect = *stage.getEffect();
     SkSTArray<2, TransformedCoords> coords(effect->numTransforms());
     SkSTArray<4, TextureSampler> samplers(effect->numTextures());
 
     this->emitAttributes(builder, stage);
     this->emitTransforms(builder, effect, key, &coords);
     this->emitSamplers(builder, effect, &samplers);
 
@@ skipping 177 matching lines @@
 GrGLVertexProgramEffectsBuilder::GrGLVertexProgramEffectsBuilder(GrGLFullShaderBuilder* builder,
                                                                  int reserveCount)
     : fBuilder(builder)
     , fProgramEffects(SkNEW_ARGS(GrGLVertexProgramEffects,
                                  (reserveCount, fBuilder->hasExplicitLocalCoords()))) {
 }
 
 void GrGLVertexProgramEffectsBuilder::emitEffect(const GrEffectStage& stage,
                                                  GrGLProgramEffects::EffectKey key,
                                                  const char* outColor,
-                                                 const char* inColor,
+                                                 const GrGLSLExpr4& inColor,
                                                  int stageIndex) {
     SkASSERT(NULL != fProgramEffects.get());
     fProgramEffects->emitEffect(fBuilder, stage, key, outColor, inColor, stageIndex);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrGLTexGenProgramEffects::emitEffect(GrGLFragmentOnlyShaderBuilder* builder,
                                           const GrEffectStage& stage,
                                           EffectKey key,
                                           const char* outColor,
-                                          const char* inColor,
+                                          const GrGLSLExpr4& inColor,
                                           int stageIndex) {
     GrDrawEffect drawEffect(stage, false);
     const GrEffectRef& effect = *stage.getEffect();
     SkSTArray<2, TransformedCoords> coords(effect->numTransforms());
     SkSTArray<4, TextureSampler> samplers(effect->numTextures());
 
     SkASSERT(0 == stage.getVertexAttribIndexCount());
     this->setupTexGen(builder, effect, key, &coords);
     this->emitSamplers(builder, effect, &samplers);
 
@@ skipping 85 matching lines @@
 GrGLTexGenProgramEffectsBuilder::GrGLTexGenProgramEffectsBuilder(
         GrGLFragmentOnlyShaderBuilder* builder,
         int reserveCount)
     : fBuilder(builder)
     , fProgramEffects(SkNEW_ARGS(GrGLTexGenProgramEffects, (reserveCount))) {
 }
 
 void GrGLTexGenProgramEffectsBuilder::emitEffect(const GrEffectStage& stage,
                                                  GrGLProgramEffects::EffectKey key,
                                                  const char* outColor,
-                                                 const char* inColor,
+                                                 const GrGLSLExpr4& inColor,
                                                  int stageIndex) {
     SkASSERT(NULL != fProgramEffects.get());
     fProgramEffects->emitEffect(fBuilder, stage, key, outColor, inColor, stageIndex);
 }