| /* |
| * 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 GrCoverageSetOpXP_DEFINED |
| #define GrCoverageSetOpXP_DEFINED |
| |
| #include "GrTypes.h" |
| #include "GrXferProcessor.h" |
| #include "SkRegion.h" |
| |
| class GrProcOptInfo; |
| |
| /** |
| * This xfer processor directly blends the the src coverage with the dst using a set operator. It is |
| * useful for rendering coverage masks using CSG. It can optionally invert the src coverage before |
| * applying the set operator. |
| */ |
| class GrCoverageSetOpXPFactory : public GrXPFactory { |
| public: |
| static sk_sp<GrXPFactory> Make(SkRegion::Op regionOp, bool invertCoverage = false); |
| |
| void getInvariantBlendedColor(const GrProcOptInfo& colorPOI, |
| GrXPFactory::InvariantBlendedColor*) const override; |
| |
| private: |
| GrCoverageSetOpXPFactory(SkRegion::Op regionOp, bool invertCoverage); |
| |
| GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, |
| const GrPipelineOptimizations& optimizations, |
| bool hasMixedSamples, |
| const DstTexture*) const override; |
| |
| bool onWillReadDstColor(const GrCaps&, const GrPipelineOptimizations&) const override { |
| return false; |
| } |
| |
| bool onIsEqual(const GrXPFactory& xpfBase) const override { |
| const GrCoverageSetOpXPFactory& xpf = xpfBase.cast<GrCoverageSetOpXPFactory>(); |
| return fRegionOp == xpf.fRegionOp; |
| } |
| |
| GR_DECLARE_XP_FACTORY_TEST; |
| |
| SkRegion::Op fRegionOp; |
| bool fInvertCoverage; |
| |
| typedef GrXPFactory INHERITED; |
| }; |
| #endif |
| |