Express (GLSL expression, possibly known value) pairs as a class

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 "GrGpu.h"
 #include "gl/GrGLEffect.h"
@@ skipping 67 matching lines @@
 
             // Compute the coverage for the rect's width
             builder->fsCodeAppendf(
                 "\tfloat coverage = scaleW*clamp((%s.z-abs(%s.x))/spanW, 0.0, 1.0);\n", fsRectName,
                 fsRectName);
             // Compute the coverage for the rect's height and merge with the width
             builder->fsCodeAppendf(
                 "\tcoverage = coverage*scaleH*clamp((%s.w-abs(%s.y))/spanH, 0.0, 1.0);\n",
                 fsRectName, fsRectName);
 
-            SkString modulate;
-            GrGLSLModulatef<4>(&modulate, inputColor, "coverage");
-            builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str());
+
+            builder->fsCodeAppendf("\t%s = %s;\n", outputColor,
+                                   (GrGLSLExpr<4>(inputColor) * GrGLSLExpr<1>("coverage")).c_str());
         }
 
         static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) {
             return 0;
         }
 
         virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect&) SK_OVERRIDE {}
 
     private:
         typedef GrGLEffect INHERITED;
@@ skipping 112 matching lines @@
                 "\tfloat coverage = scaleW*clamp((%s.x-perpDot)/spanW, 0.0, 1.0);\n",
                 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 = coverage*scaleH*clamp((%s.y-perpDot)/spanH, 0.0, 1.0);\n",
                     fsWidthHeightName);
 
-            SkString modulate;
-            GrGLSLModulatef<4>(&modulate, inputColor, "coverage");
-            builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str());
+
+            builder->fsCodeAppendf("\t%s = %s;\n", outputColor,
+                                   (GrGLSLExpr<4>(inputColor) * GrGLSLExpr<1>("coverage")).c_str());
         }
 
         static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) {
             return 0;
         }
 
         virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect&) SK_OVERRIDE {}
 
     private:
         typedef GrGLEffect INHERITED;
@@ skipping 573 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);
 }