123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
/*
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* Copyright 2015 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 SkArithmeticMode_gpu_DEFINED
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#define SkArithmeticMode_gpu_DEFINED
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#include "SkTypes.h"
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#if SK_SUPPORT_GPU
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#include "GrCaps.h"
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#include "GrCoordTransform.h"
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#include "GrFragmentProcessor.h"
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#include "GrTextureAccess.h"
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#include "GrTypes.h"
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#include "GrXferProcessor.h"
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class GrInvariantOutput;
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class GrProcOptInfo;
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class GrTexture;
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///////////////////////////////////////////////////////////////////////////////
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// Fragment Processor
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///////////////////////////////////////////////////////////////////////////////
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class GrGLArtithmeticFP;
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class GrArithmeticFP : public GrFragmentProcessor {
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public:
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static const GrFragmentProcessor* Create(float k1, float k2, float k3, float k4,
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bool enforcePMColor, const GrFragmentProcessor* dst) {
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return new GrArithmeticFP(k1, k2, k3, k4, enforcePMColor, dst);
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}
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~GrArithmeticFP() override {};
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const char* name() const override { return "Arithmetic"; }
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float k1() const { return fK1; }
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float k2() const { return fK2; }
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float k3() const { return fK3; }
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float k4() const { return fK4; }
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bool enforcePMColor() const { return fEnforcePMColor; }
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private:
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GrGLFragmentProcessor* onCreateGLInstance() const override;
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void onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
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bool onIsEqual(const GrFragmentProcessor&) const override;
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void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
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GrArithmeticFP(float k1, float k2, float k3, float k4, bool enforcePMColor,
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const GrFragmentProcessor* dst);
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float fK1, fK2, fK3, fK4;
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bool fEnforcePMColor;
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GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
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typedef GrFragmentProcessor INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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// Xfer Processor
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///////////////////////////////////////////////////////////////////////////////
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class GrArithmeticXPFactory : public GrXPFactory {
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public:
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static GrXPFactory* Create(float k1, float k2, float k3, float k4, bool enforcePMColor) {
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return new GrArithmeticXPFactory(k1, k2, k3, k4, enforcePMColor);
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}
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bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const override {
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return true;
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}
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void getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
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GrXPFactory::InvariantBlendedColor*) const override;
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private:
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GrArithmeticXPFactory(float k1, float k2, float k3, float k4, bool enforcePMColor);
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GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
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const GrProcOptInfo& colorPOI,
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const GrProcOptInfo& coveragePOI,
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bool hasMixedSamples,
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const DstTexture*) const override;
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bool willReadDstColor(const GrCaps& caps,
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const GrProcOptInfo& colorPOI,
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const GrProcOptInfo& coveragePOI,
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bool hasMixedSamples) const override {
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return true;
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}
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bool onIsEqual(const GrXPFactory& xpfBase) const override {
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const GrArithmeticXPFactory& xpf = xpfBase.cast<GrArithmeticXPFactory>();
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if (fK1 != xpf.fK1 ||
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fK2 != xpf.fK2 ||
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fK3 != xpf.fK3 ||
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fK4 != xpf.fK4 ||
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fEnforcePMColor != xpf.fEnforcePMColor) {
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return false;
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}
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return true;
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}
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GR_DECLARE_XP_FACTORY_TEST;
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float fK1, fK2, fK3, fK4;
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bool fEnforcePMColor;
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typedef GrXPFactory INHERITED;
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};
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#endif
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#endif
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