Screenspace AA tessellated path rendering.

src/gpu/GrDefaultGeoProcFactory.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDefaultGeoProcFactory_DEFINED
 #define GrDefaultGeoProcFactory_DEFINED
 
 #include "GrGeometryProcessor.h"
 
 /*
  * A factory for creating default Geometry Processors which simply multiply position by the uniform
  * view matrix and wire through color, coverage, UV coords if requested.  Right now this is only
  * used in the creation of optimized draw states because adding default GPs to the drawstate can
  * interfere with batching due to updating the drawstate.
  */
 namespace GrDefaultGeoProcFactory {
     // Structs for adding vertex attributes
     struct PositionAttr {
         SkPoint fPosition;
     };
 
     struct PositionCoverageAttr {
         SkPoint fPosition;
-        GrColor fCoverage;
+        float   fCoverage;
     };
 
     struct PositionColorAttr {
         SkPoint fPosition;
         SkColor fColor;
     };
 
     struct PositionColorCoverageAttr {
         SkPoint fPosition;
         SkColor fColor;
-        GrColor fCoverage;
+        float   fCoverage;
     };
 
     struct PositionLocalCoordAttr {
         SkPoint fPosition;
         SkPoint fLocalCoord;
     };
 
     struct PositionLocalCoordCoverageAttr {
         SkPoint fPosition;
         SkPoint fLocalCoord;
-        GrColor fCoverage;
+        float   fCoverage;
     };
 
     struct PositionColorLocalCoordAttr {
         SkPoint fPosition;
         GrColor fColor;
         SkPoint fLocalCoord;
     };
 
     struct PositionColorLocalCoordCoverage {
         SkPoint fPosition;
         GrColor fColor;
         SkPoint fLocalCoord;
-        GrColor fCoverage;
+        float   fCoverage;
     };
 
     struct Color {
         enum Type {
             kNone_Type,
             kUniform_Type,
             kAttribute_Type,
         };
         Color(GrColor color) : fType(kUniform_Type), fColor(color) {}
         Color(Type type) : fType(type), fColor(GrColor_ILLEGAL) {
@@ skipping 54 matching lines @@
      */
     sk_sp<GrGeometryProcessor> MakeForDeviceSpace(const Color&,
                                                   const Coverage&,
                                                   const LocalCoords&,
                                                   const SkMatrix& viewMatrix);
 
     inline size_t DefaultVertexStride() { return sizeof(PositionAttr); }
 };
 
 #endif