Expand modulate, add, subtract, extract component glsl helpers.

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 82 matching lines @@
                                    fsWidthHeightName);
 
             // Compute the coverage for the rect's height and merge with the width
             builder->fsCodeAppendf("\tperpDot = abs(dot(offset, %s.zw));\n",
                                    fsRectEdgeName);
             builder->fsCodeAppendf(
                     "\tcoverage = min(coverage, clamp(hScale*(%s.y-perpDot), 0.0, 1.0));\n",
                     fsWidthHeightName);
 
             SkString modulate;
-            GrGLSLModulate4f(&modulate, inputColor, "coverage");
+            GrGLSLModulatef<4>(&modulate, inputColor, "coverage");
             builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str());
         }
 
         static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) {
             return 0;
         }
 
         virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect&) SK_OVERRIDE {}
 
     private:
@@ skipping 366 matching lines @@
     // The innermost rect has full coverage
     verts += 8 * vsize;
     for (int i = 0; i < 4; ++i) {
         *reinterpret_cast<GrColor*>(verts + i * vsize) = 0;
     }
 
     target->setIndexSourceToBuffer(indexBuffer);
     target->drawIndexed(kTriangles_GrPrimitiveType,
                         0, 0, 16, aaStrokeRectIndexCount());
 }