Add a requiresVertexShader method to GrGLEffect

src/gpu/GrAARectRenderer.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrAARectRenderer.h"
 #include "GrRefCnt.h"
 #include "GrGpu.h"
@@ skipping 26 matching lines @@
 
     virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendEffectFactory<GrAlignedRectEffect>::getInstance();
     }
 
     class GLEffect : public GrGLEffect {
     public:
         GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
         : INHERITED (factory) {}
 
+        virtual bool requiresVertexShader(const GrDrawEffect&) const SK_OVERRIDE { return true; }
+
         virtual void emitCode(GrGLShaderBuilder* builder,
                               const GrDrawEffect& drawEffect,
                               EffectKey key,
                               const char* outputColor,
                               const char* inputColor,
                               const TextureSamplerArray& samplers) SK_OVERRIDE {
             GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder->getVertexBuilder();
             SkASSERT(NULL != vertexBuilder);
 
             // setup the varying for the Axis aligned rect effect
@@ skipping 100 matching lines @@
 
     virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendEffectFactory<GrRectEffect>::getInstance();
     }
 
     class GLEffect : public GrGLEffect {
     public:
         GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
         : INHERITED (factory) {}
 
+        virtual bool requiresVertexShader(const GrDrawEffect&) const SK_OVERRIDE { return true; }
+
         virtual void emitCode(GrGLShaderBuilder* builder,
                               const GrDrawEffect& drawEffect,
                               EffectKey key,
                               const char* outputColor,
                               const char* inputColor,
                               const TextureSamplerArray& samplers) SK_OVERRIDE {
             GrGLShaderBuilder::VertexBuilder* vertexBuilder = builder->getVertexBuilder();
             SkASSERT(NULL != vertexBuilder);
 
             // setup the varying for the center point and the unit vector
@@ skipping 632 matching lines @@
     // can't call mapRect for devInside since it calls sort
     combinedMatrix.mapPoints((SkPoint*)&devInside, (const SkPoint*)&rects[1], 2);
 
     if (devInside.isEmpty()) {
         this->fillAARect(gpu, target, devOutside, SkMatrix::I(), devOutside, useVertexCoverage);
         return;
     }
 
     this->geometryStrokeAARect(gpu, target, devOutside, devInside, useVertexCoverage);
 }