Remove fModulate from GrGLShaderBuilder

Review URL: https://codereview.appspot.com/6495051/




git-svn-id: http://skia.googlecode.com/svn/trunk@5350 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrSingleTextureEffect.cpp b/src/gpu/effects/GrSingleTextureEffect.cpp
index 42a8bf9..dc91a68 100644
--- a/src/gpu/effects/GrSingleTextureEffect.cpp
+++ b/src/gpu/effects/GrSingleTextureEffect.cpp
@@ -23,7 +23,9 @@
                         const char* outputColor,
                         const char* inputColor,
                         const char* samplerName) SK_OVERRIDE {
-        builder->emitTextureLookupAndModulate(outputColor, samplerName);
+        builder->fFSCode.appendf("\t%s = ", outputColor);
+        builder->appendTextureLookupAndModulate(&builder->fFSCode, inputColor, samplerName);
+        builder->fFSCode.append(";\n");
     }
 
     static inline StageKey GenKey(const GrCustomStage&, const GrGLCaps&) { return 0; }