| /* |
| * 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 GrPorterDuffXferProcessor_DEFINED |
| #define GrPorterDuffXferProcessor_DEFINED |
| |
| #include "GrTypes.h" |
| #include "GrXferProcessor.h" |
| #include "SkBlendMode.h" |
| |
| class GrProcOptInfo; |
| |
| // See the comment above GrXPFactory's definition about this warning suppression. |
| #if defined(__GNUC__) || defined(__clang) |
| #pragma GCC diagnostic push |
| #pragma GCC diagnostic ignored "-Wnon-virtual-dtor" |
| #endif |
| class GrPorterDuffXPFactory : public GrXPFactory { |
| public: |
| static const GrXPFactory* Get(SkBlendMode blendMode); |
| |
| /** Because src-over is so common we special case it for performance reasons. If this returns |
| null then the SimpleSrcOverXP() below should be used. */ |
| static GrXferProcessor* CreateSrcOverXferProcessor(const GrCaps& caps, |
| const GrPipelineAnalysis&, |
| bool hasMixedSamples, |
| const GrXferProcessor::DstTexture*); |
| |
| /** Returns a simple non-LCD porter duff blend XP with no optimizations or coverage. */ |
| static sk_sp<GrXferProcessor> CreateNoCoverageXP(SkBlendMode); |
| |
| /** This XP implements non-LCD src-over using hw blend with no optimizations. It is returned |
| by reference because it is global and its ref-cnting methods are not thread safe. */ |
| static const GrXferProcessor& SimpleSrcOverXP(); |
| |
| static bool WillSrcOverReadDst(const GrProcOptInfo& colorInput, |
| const GrProcOptInfo& coverageInput); |
| static bool IsSrcOverPreCoverageBlendedColorConstant(const GrProcOptInfo& colorInput, |
| GrColor* color); |
| |
| static bool SrcOverWillNeedDstTexture(const GrCaps&, const GrPipelineAnalysis&); |
| |
| private: |
| constexpr GrPorterDuffXPFactory(SkBlendMode); |
| |
| bool willReadsDst(const GrProcOptInfo&, const GrProcOptInfo&) const override; |
| |
| GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, |
| const GrPipelineAnalysis&, |
| bool hasMixedSamples, |
| const DstTexture*) const override; |
| |
| bool willReadDstInShader(const GrCaps&, ColorType, CoverageType) const override; |
| |
| GR_DECLARE_XP_FACTORY_TEST; |
| static void TestGetXPOutputTypes(const GrXferProcessor*, int* outPrimary, int* outSecondary); |
| |
| SkBlendMode fBlendMode; |
| |
| friend class GrPorterDuffTest; // for TestGetXPOutputTypes() |
| typedef GrXPFactory INHERITED; |
| }; |
| #if defined(__GNUC__) || defined(__clang) |
| #pragma GCC diagnostic pop |
| #endif |
| |
| #endif |