Adds local coords to GrEffect system.

src/gpu/gl/GrGLShaderBuilder.cpp

Index: src/gpu/gl/GrGLShaderBuilder.cpp
===================================================================
--- src/gpu/gl/GrGLShaderBuilder.cpp	(revision 8241)
+++ src/gpu/gl/GrGLShaderBuilder.cpp	(working copy)
@@ -8,6 +8,7 @@
 #include "gl/GrGLShaderBuilder.h"
 #include "gl/GrGLProgram.h"
 #include "gl/GrGLUniformHandle.h"
+#include "GrDrawEffect.h"
 #include "GrTexture.h"
 
 // number of each input/output type in a single allocation block
@@ -82,7 +83,8 @@
 //const int GrGLShaderBuilder::fCoordDims = 2;
 
 GrGLShaderBuilder::GrGLShaderBuilder(const GrGLContextInfo& ctxInfo,
-                                     GrGLUniformManager& uniformManager)
+                                     GrGLUniformManager& uniformManager,
+                                     bool explicitLocalCoords)
     : fUniforms(kVarsPerBlock)
     , fVSAttrs(kVarsPerBlock)
     , fVSOutputs(kVarsPerBlock)
@@ -99,6 +101,14 @@
 
     fPositionVar = &fVSAttrs.push_back();
     fPositionVar->set(kVec2f_GrSLType, GrGLShaderVar::kAttribute_TypeModifier, "aPosition");
+    if (explicitLocalCoords) {
+        fLocalCoordsVar = &fVSAttrs.push_back();
+        fLocalCoordsVar->set(kVec2f_GrSLType,
+                             GrGLShaderVar::kAttribute_TypeModifier,
+                             "aLocalCoords");
+    } else {
+        fLocalCoordsVar = fPositionVar;
+    }
 }
 
 void GrGLShaderBuilder::codeAppendf(ShaderType type, const char format[], va_list args) {
@@ -494,7 +504,6 @@
                                 GrGLEffect::EffectKey key,
                                 const char* fsInColor,
                                 const char* fsOutColor,
-                                const char* vsInCoord,
                                 SkTArray<GrGLUniformManager::UniformHandle, true>* samplerHandles) {
     GrAssert(NULL != stage.getEffect());
 
@@ -506,6 +515,7 @@
         textureSamplers[i].init(this, &effect->textureAccess(i), i);
         samplerHandles->push_back(textureSamplers[i].fSamplerUniform);
     }
+    GrDrawEffect drawEffect(stage, this->hasExplicitLocalCoords());
 
     int numAttributes = stage.getVertexAttribIndexCount();
     const int* attributeIndices = stage.getVertexAttribIndices();
@@ -519,15 +529,15 @@
         }
     }
 
-    GrGLEffect* glEffect = effect->getFactory().createGLInstance(effect);
+    GrGLEffect* glEffect = effect->getFactory().createGLInstance(drawEffect);
 
     // Enclose custom code in a block to avoid namespace conflicts
     this->fVSCode.appendf("\t{ // %s\n", glEffect->name());
     this->fFSCode.appendf("\t{ // %s \n", glEffect->name());
+
     glEffect->emitCode(this,
-                       stage,
+                       drawEffect,
                        key,
-                       vsInCoord,
                        fsOutColor,
                        fsInColor,
                        textureSamplers);