Remove coverage multiplies when it is known to be fully opaque.

src/gpu/GrDefaultGeoProcFactory.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDefaultGeoProcFactory.h"
 
 #include "GrInvariantOutput.h"
@@ skipping 31 matching lines @@
     const Attribute* inCoverage() const { return fInCoverage; }
     uint8_t coverage() const { return fCoverage; }
 
     void initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const override {
         BatchTracker* local = bt->cast<BatchTracker>();
         local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init,
                                                    SkToBool(fInColor));
 
         bool hasVertexCoverage = SkToBool(fInCoverage) && !init.fCoverageIgnored;
         bool covIsSolidWhite = !hasVertexCoverage && 0xff == this->coverage();
-        if (covIsSolidWhite) {
+        if (init.fCoverageIgnored) {
+            local->fInputCoverageType = kIgnored_GrGPInput;
+        } else if (covIsSolidWhite) {
             local->fInputCoverageType = kAllOnes_GrGPInput;
-        } else if (!hasVertexCoverage) {
-            local->fInputCoverageType = kUniform_GrGPInput;
-            local->fCoverage = this->coverage();
         } else if (hasVertexCoverage) {
             SkASSERT(fInCoverage);
             local->fInputCoverageType = kAttribute_GrGPInput;
         } else {
-            local->fInputCoverageType = kIgnored_GrGPInput;
+            local->fInputCoverageType = kUniform_GrGPInput;
+            local->fCoverage = this->coverage();
         }
-
         local->fUsesLocalCoords = init.fUsesLocalCoords;
     }
 
     bool onCanMakeEqual(const GrBatchTracker& m,
                         const GrGeometryProcessor& that,
                         const GrBatchTracker& t) const override {
         const BatchTracker& mine = m.cast<BatchTracker>();
         const BatchTracker& theirs = t.cast<BatchTracker>();
         return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
                                        that, theirs.fUsesLocalCoords) &&
@@ skipping 203 matching lines @@
                                                            const SkMatrix& localMatrix,
                                                            bool opaqueVertexColors,
                                                            uint8_t coverage) {
     return DefaultGeoProc::Create(gpTypeFlags,
                                   color,
                                   viewMatrix,
                                   localMatrix,
                                   opaqueVertexColors,
                                   coverage);
 }