Create a static instances of SrcOver XferProcessor

src/gpu/effects/GrCoverageSetOpXP.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 "effects/GrCoverageSetOpXP.h"
 #include "GrCaps.h"
@@ skipping 18 matching lines @@
 
     bool invertCoverage() const { return fInvertCoverage; }
 
 private:
     CoverageSetOpXP(SkRegion::Op regionOp, bool fInvertCoverage);
 
     GrXferProcessor::OptFlags onGetOptimizations(const GrProcOptInfo& colorPOI,
                                                  const GrProcOptInfo& coveragePOI,
                                                  bool doesStencilWrite,
                                                  GrColor* color,
-                                                 const GrCaps& caps) override;
+                                                 const GrCaps& caps) const override;
 
     void onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
 
     void onGetBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const override;
 
     bool onIsEqual(const GrXferProcessor& xpBase) const override {
         const CoverageSetOpXP& xp = xpBase.cast<CoverageSetOpXP>();
         return (fRegionOp == xp.fRegionOp &&
                 fInvertCoverage == xp.fInvertCoverage);
     }
@@ skipping 54 matching lines @@
 
 GrGLSLXferProcessor* CoverageSetOpXP::createGLSLInstance() const {
     return new GLCoverageSetOpXP(*this);
 }
 
 GrXferProcessor::OptFlags
 CoverageSetOpXP::onGetOptimizations(const GrProcOptInfo& colorPOI,
                                     const GrProcOptInfo& coveragePOI,
                                     bool doesStencilWrite,
                                     GrColor* color,
-                                    const GrCaps& caps) {
+                                    const GrCaps& caps) const {
     // We never look at the color input
     return GrXferProcessor::kIgnoreColor_OptFlag; 
 }
 
 void CoverageSetOpXP::onGetBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const {
     switch (fRegionOp) {
         case SkRegion::kReplace_Op:
             blendInfo->fSrcBlend = kOne_GrBlendCoeff;
             blendInfo->fDstBlend = kZero_GrBlendCoeff;
             break;
@@ skipping 120 matching lines @@
 }
 
 GR_DEFINE_XP_FACTORY_TEST(GrCoverageSetOpXPFactory);
 
 const GrXPFactory* GrCoverageSetOpXPFactory::TestCreate(GrProcessorTestData* d) {
     SkRegion::Op regionOp = SkRegion::Op(d->fRandom->nextULessThan(SkRegion::kLastOp + 1));
     bool invertCoverage = !d->fRenderTarget->hasMixedSamples() && d->fRandom->nextBool();
     return GrCoverageSetOpXPFactory::Create(regionOp, invertCoverage);
 }