55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrPorterDuffXferProcessor_DEFINED
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#define GrPorterDuffXferProcessor_DEFINED
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#include "GrTypes.h"
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#include "GrXferProcessor.h"
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#include "SkXfermode.h"
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class GrProcOptInfo;
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class GrPorterDuffXPFactory : public GrXPFactory {
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public:
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static GrXPFactory* Create(SkXfermode::Mode mode);
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bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const SK_OVERRIDE;
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bool canApplyCoverage(const GrProcOptInfo& colorPOI,
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const GrProcOptInfo& coveragePOI) const SK_OVERRIDE;
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bool canTweakAlphaForCoverage() const SK_OVERRIDE;
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void getInvariantOutput(const GrProcOptInfo& colorPOI, const GrProcOptInfo& coveragePOI,
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GrXPFactory::InvariantOutput*) const SK_OVERRIDE;
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private:
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GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst);
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GrXferProcessor* onCreateXferProcessor(const GrProcOptInfo& colorPOI,
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const GrProcOptInfo& coveragePOI,
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const GrDeviceCoordTexture* dstCopy) const SK_OVERRIDE;
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bool willReadDstColor(const GrProcOptInfo& colorPOI,
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const GrProcOptInfo& coveragePOI) const SK_OVERRIDE;
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bool onIsEqual(const GrXPFactory& xpfBase) const SK_OVERRIDE {
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const GrPorterDuffXPFactory& xpf = xpfBase.cast<GrPorterDuffXPFactory>();
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return (fSrcCoeff == xpf.fSrcCoeff && fDstCoeff == xpf.fDstCoeff);
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}
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GR_DECLARE_XP_FACTORY_TEST;
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GrBlendCoeff fSrcCoeff;
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GrBlendCoeff fDstCoeff;
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typedef GrXPFactory INHERITED;
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};
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#endif
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