remove separate color from coverage

src/gpu/GrDrawState.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawState_DEFINED
 #define GrDrawState_DEFINED
 
@@ skipping 231 matching lines @@
     /// The input color to the first color-stage is either the constant color or interpolated
     /// per-vertex colors. The input to the first coverage stage is either a constant coverage
     /// (usually full-coverage) or interpolated per-vertex coverage.
     ///
     /// See the documentation of kCoverageDrawing_StateBit for information about disabling the
     /// the color / coverage distinction.
     ////
 
     int numColorStages() const { return fColorStages.count(); }
     int numCoverageStages() const { return fCoverageStages.count(); }
+    int numFragmentStages() const { return this->numColorStages() + this->numCoverageStages(); }
     int numTotalStages() const {
-         return this->numColorStages() + this->numCoverageStages() +
-                 (this->hasGeometryProcessor() ? 1 : 0);
+         return this->numFragmentStages() + (this->hasGeometryProcessor() ? 1 : 0);
     }
 
     bool hasGeometryProcessor() const { return SkToBool(fGeometryProcessor.get()); }
     const GrGeometryProcessor* getGeometryProcessor() const { return fGeometryProcessor.get(); }
     const GrFragmentStage& getColorStage(int idx) const { return fColorStages[idx]; }
     const GrFragmentStage& getCoverageStage(int idx) const { return fCoverageStages[idx]; }
 
     /**
      * Checks whether any of the effects will read the dst pixel color.
      */
@@ skipping 586 matching lines @@
     mutable uint32_t fCachedCapsID;
 
     friend class GrOptDrawState;
 
     typedef SkRefCnt INHERITED;
 };
 
 GR_MAKE_BITFIELD_OPS(GrDrawState::BlendOptFlags);
 
 #endif