src/gpu/effects/GrTextureDomain.cpp - skia - Git at Google


            
            /*

            
             * Copyright 2012 Google Inc.

            
             *

            
             * Use of this source code is governed by a BSD-style license that can be

            
             * found in the LICENSE file.

            
             */


            #include "GrTextureDomain.h"

            
            #include "GrInvariantOutput.h"

            
            #include "GrSimpleTextureEffect.h"

            
            #include "SkFloatingPoint.h"

            
            #include "glsl/GrGLSLFragmentProcessor.h"

            
            #include "glsl/GrGLSLFragmentShaderBuilder.h"

            
            #include "glsl/GrGLSLProgramDataManager.h"

            
            #include "glsl/GrGLSLSampler.h"

            
            #include "glsl/GrGLSLShaderBuilder.h"

            
            #include "glsl/GrGLSLUniformHandler.h"


            GrTextureDomain::GrTextureDomain(const SkRect& domain, Mode mode, int index)

            
                : fIndex(index) {


                static const SkRect kFullRect = {0, 0, SK_Scalar1, SK_Scalar1};

            
                if (domain.contains(kFullRect) && kClamp_Mode == mode) {

            
                    fMode = kIgnore_Mode;

            
                } else {

            
                    fMode = mode;

            
                }


                if (fMode != kIgnore_Mode) {

            
                    // We don't currently handle domains that are empty or don't intersect the texture.

            
                    // It is OK if the domain rect is a line or point, but it should not be inverted. We do not

            
                    // handle rects that do not intersect the [0..1]x[0..1] rect.

            
                    SkASSERT(domain.fLeft <= domain.fRight);

            
                    SkASSERT(domain.fTop <= domain.fBottom);

            
                    fDomain.fLeft = SkScalarPin(domain.fLeft, kFullRect.fLeft, kFullRect.fRight);

            
                    fDomain.fRight = SkScalarPin(domain.fRight, kFullRect.fLeft, kFullRect.fRight);

            
                    fDomain.fTop = SkScalarPin(domain.fTop, kFullRect.fTop, kFullRect.fBottom);

            
                    fDomain.fBottom = SkScalarPin(domain.fBottom, kFullRect.fTop, kFullRect.fBottom);

            
                    SkASSERT(fDomain.fLeft <= fDomain.fRight);

            
                    SkASSERT(fDomain.fTop <= fDomain.fBottom);

            
                }

            
            }


            //////////////////////////////////////////////////////////////////////////////


            void GrTextureDomain::GLDomain::sampleTexture(GrGLSLShaderBuilder* builder,

            
                                                          GrGLSLUniformHandler* uniformHandler,

            
                                                          const GrGLSLCaps* glslCaps,

            
                                                          const GrTextureDomain& textureDomain,

            
                                                          const char* outColor,

            
                                                          const SkString& inCoords,

            
                                                          GrGLSLFragmentProcessor::SamplerHandle sampler,

            
                                                          const char* inModulateColor) {

            
                SkASSERT((Mode)-1 == fMode || textureDomain.mode() == fMode);

            
                SkDEBUGCODE(fMode = textureDomain.mode();)


                if (textureDomain.mode() != kIgnore_Mode && !fDomainUni.isValid()) {

            
                    const char* name;

            
                    SkString uniName("TexDom");

            
                    if (textureDomain.fIndex >= 0) {

            
                        uniName.appendS32(textureDomain.fIndex);

            
                    }

            
                    fDomainUni = uniformHandler->addUniform(kFragment_GrShaderFlag,

            
                                                            kVec4f_GrSLType, kDefault_GrSLPrecision,

            
                                                            uniName.c_str(), &name);

            
                    fDomainName = name;

            
                }


                switch (textureDomain.mode()) {

            
                    case kIgnore_Mode: {

            
                        builder->codeAppendf("%s = ", outColor);

            
                        builder->appendTextureLookupAndModulate(inModulateColor, sampler,

            
                                                                  inCoords.c_str());

            
                        builder->codeAppend(";");

            
                        break;

            
                    }

            
                    case kClamp_Mode: {

            
                        SkString clampedCoords;

            
                        clampedCoords.appendf("clamp(%s, %s.xy, %s.zw)",

            
                                              inCoords.c_str(), fDomainName.c_str(), fDomainName.c_str());


                        builder->codeAppendf("%s = ", outColor);

            
                        builder->appendTextureLookupAndModulate(inModulateColor, sampler,

            
                                                                  clampedCoords.c_str());

            
                        builder->codeAppend(";");

            
                        break;

            
                    }

            
                    case kDecal_Mode: {

            
                        // Add a block since we're going to declare variables.

            
                        GrGLSLShaderBuilder::ShaderBlock block(builder);


                        const char* domain = fDomainName.c_str();

            
                        if (!glslCaps->canUseAnyFunctionInShader()) {

            
                            // On the NexusS and GalaxyNexus, the other path (with the 'any'

            
                            // call) causes the compilation error "Calls to any function that

            
                            // may require a gradient calculation inside a conditional block

            
                            // may return undefined results". This appears to be an issue with

            
                            // the 'any' call since even the simple "result=black; if (any())

            
                            // result=white;" code fails to compile.

            
                            builder->codeAppend("vec4 outside = vec4(0.0, 0.0, 0.0, 0.0);");

            
                            builder->codeAppend("vec4 inside = ");

            
                            builder->appendTextureLookupAndModulate(inModulateColor, sampler,

            
                                                                      inCoords.c_str());

            
                            builder->codeAppend(";");


                            builder->appendPrecisionModifier(kHigh_GrSLPrecision);

            
                            builder->codeAppendf("float x = (%s).x;", inCoords.c_str());

            
                            builder->appendPrecisionModifier(kHigh_GrSLPrecision);

            
                            builder->codeAppendf("float y = (%s).y;", inCoords.c_str());


                            builder->codeAppendf("x = abs(2.0*(x - %s.x)/(%s.z - %s.x) - 1.0);",

            
                                                 domain, domain, domain);

            
                            builder->codeAppendf("y = abs(2.0*(y - %s.y)/(%s.w - %s.y) - 1.0);",

            
                                                 domain, domain, domain);

            
                            builder->codeAppend("float blend = step(1.0, max(x, y));");

            
                            builder->codeAppendf("%s = mix(inside, outside, blend);", outColor);

            
                        } else {

            
                            builder->codeAppend("bvec4 outside;\n");

            
                            builder->codeAppendf("outside.xy = lessThan(%s, %s.xy);", inCoords.c_str(),

            
                                                   domain);

            
                            builder->codeAppendf("outside.zw = greaterThan(%s, %s.zw);", inCoords.c_str(),

            
                                                   domain);

            
                            builder->codeAppendf("%s = any(outside) ? vec4(0.0, 0.0, 0.0, 0.0) : ",

            
                                                   outColor);

            
                            builder->appendTextureLookupAndModulate(inModulateColor, sampler,

            
                                                                      inCoords.c_str());

            
                            builder->codeAppend(";");

            
                        }

            
                        break;

            
                    }

            
                    case kRepeat_Mode: {

            
                        SkString clampedCoords;

            
                        clampedCoords.printf("mod(%s - %s.xy, %s.zw - %s.xy) + %s.xy",

            
                                             inCoords.c_str(), fDomainName.c_str(), fDomainName.c_str(),

            
                                             fDomainName.c_str(), fDomainName.c_str());


                        builder->codeAppendf("%s = ", outColor);

            
                        builder->appendTextureLookupAndModulate(inModulateColor, sampler,

            
                                                                  clampedCoords.c_str());

            
                        builder->codeAppend(";");

            
                        break;

            
                    }

            
                }

            
            }


            void GrTextureDomain::GLDomain::setData(const GrGLSLProgramDataManager& pdman,

            
                                                    const GrTextureDomain& textureDomain,

            
                                                    GrSurfaceOrigin textureOrigin) {

            
                SkASSERT(textureDomain.mode() == fMode);

            
                if (kIgnore_Mode != textureDomain.mode()) {

            
                    float values[kPrevDomainCount] = {

            
                        SkScalarToFloat(textureDomain.domain().left()),

            
                        SkScalarToFloat(textureDomain.domain().top()),

            
                        SkScalarToFloat(textureDomain.domain().right()),

            
                        SkScalarToFloat(textureDomain.domain().bottom())

            
                    };

            
                    // vertical flip if necessary

            
                    if (kBottomLeft_GrSurfaceOrigin == textureOrigin) {

            
                        values[1] = 1.0f - values[1];

            
                        values[3] = 1.0f - values[3];

            
                        // The top and bottom were just flipped, so correct the ordering

            
                        // of elements so that values = (l, t, r, b).

            
                        SkTSwap(values[1], values[3]);

            
                    }

            
                    if (0 != memcmp(values, fPrevDomain, kPrevDomainCount * sizeof(float))) {

            
                        pdman.set4fv(fDomainUni, 1, values);

            
                        memcpy(fPrevDomain, values, kPrevDomainCount * sizeof(float));

            
                    }

            
                }

            
            }


            //////////////////////////////////////////////////////////////////////////////


            class GrGLTextureDomainEffect : public GrGLSLFragmentProcessor {

            
            public:

            
                void emitCode(EmitArgs&) override;


                static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*);


            protected:

            
                void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;


            private:

            
                GrTextureDomain::GLDomain         fGLDomain;

            
                typedef GrGLSLFragmentProcessor INHERITED;

            
            };


            void GrGLTextureDomainEffect::emitCode(EmitArgs& args) {

            
                const GrTextureDomainEffect& textureDomainEffect = args.fFp.cast<GrTextureDomainEffect>();

            
                const GrTextureDomain& domain = textureDomainEffect.textureDomain();


                GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;

            
                SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0);

            
                fGLDomain.sampleTexture(fragBuilder,

            
                                        args.fUniformHandler,

            
                                        args.fGLSLCaps,

            
                                        domain,

            
                                        args.fOutputColor,

            
                                        coords2D,

            
                                        args.fTexSamplers[0],

            
                                        args.fInputColor);

            
            }


            void GrGLTextureDomainEffect::onSetData(const GrGLSLProgramDataManager& pdman,

            
                                                    const GrProcessor& processor) {

            
                const GrTextureDomainEffect& textureDomainEffect = processor.cast<GrTextureDomainEffect>();

            
                const GrTextureDomain& domain = textureDomainEffect.textureDomain();

            
                fGLDomain.setData(pdman, domain, processor.texture(0)->origin());

            
            }


            void GrGLTextureDomainEffect::GenKey(const GrProcessor& processor, const GrGLSLCaps&,

            
                                                 GrProcessorKeyBuilder* b) {

            
                const GrTextureDomain& domain = processor.cast<GrTextureDomainEffect>().textureDomain();

            
                b->add32(GrTextureDomain::GLDomain::DomainKey(domain));

            
            }


            ///////////////////////////////////////////////////////////////////////////////


            sk_sp<GrFragmentProcessor> GrTextureDomainEffect::Make(GrTexture* texture,

            
                                                                   sk_sp<GrColorSpaceXform> colorSpaceXform,

            
                                                                   const SkMatrix& matrix,

            
                                                                   const SkRect& domain,

            
                                                                   GrTextureDomain::Mode mode,

            
                                                                   GrTextureParams::FilterMode filterMode,

            
                                                                   GrCoordSet coordSet) {

            
                static const SkRect kFullRect = {0, 0, SK_Scalar1, SK_Scalar1};

            
                if (GrTextureDomain::kIgnore_Mode == mode ||

            
                    (GrTextureDomain::kClamp_Mode == mode && domain.contains(kFullRect))) {

            
                    return GrSimpleTextureEffect::Make(texture, std::move(colorSpaceXform), matrix, filterMode);

            
                } else {

            
                    return sk_sp<GrFragmentProcessor>(

            
                        new GrTextureDomainEffect(texture, std::move(colorSpaceXform), matrix, domain, mode,

            
                                                  filterMode, coordSet));

            
                }

            
            }


            GrTextureDomainEffect::GrTextureDomainEffect(GrTexture* texture,

            
                                                         sk_sp<GrColorSpaceXform> colorSpaceXform,

            
                                                         const SkMatrix& matrix,

            
                                                         const SkRect& domain,

            
                                                         GrTextureDomain::Mode mode,

            
                                                         GrTextureParams::FilterMode filterMode,

            
                                                         GrCoordSet coordSet)

            
                : GrSingleTextureEffect(texture, std::move(colorSpaceXform), matrix, filterMode, coordSet)

            
                , fTextureDomain(domain, mode) {

            
                SkASSERT(mode != GrTextureDomain::kRepeat_Mode ||

            
                        filterMode == GrTextureParams::kNone_FilterMode);

            
                this->initClassID<GrTextureDomainEffect>();

            
            }


            GrTextureDomainEffect::~GrTextureDomainEffect() {}


            void GrTextureDomainEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,

            
                                                              GrProcessorKeyBuilder* b) const {

            
                GrGLTextureDomainEffect::GenKey(*this, caps, b);

            
            }


            GrGLSLFragmentProcessor* GrTextureDomainEffect::onCreateGLSLInstance() const  {

            
                return new GrGLTextureDomainEffect;

            
            }


            bool GrTextureDomainEffect::onIsEqual(const GrFragmentProcessor& sBase) const {

            
                const GrTextureDomainEffect& s = sBase.cast<GrTextureDomainEffect>();

            
                return this->fTextureDomain == s.fTextureDomain;

            
            }


            void GrTextureDomainEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {

            
                if (GrTextureDomain::kDecal_Mode == fTextureDomain.mode()) { // TODO: helper

            
                    if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {

            
                        inout->mulByUnknownSingleComponent();

            
                    } else {

            
                        inout->mulByUnknownFourComponents();

            
                    }

            
                } else {

            
                    this->updateInvariantOutputForModulation(inout);

            
                }

            
            }


            ///////////////////////////////////////////////////////////////////////////////


            GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrTextureDomainEffect);


            sk_sp<GrFragmentProcessor> GrTextureDomainEffect::TestCreate(GrProcessorTestData* d) {

            
                int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :

            
                                                      GrProcessorUnitTest::kAlphaTextureIdx;

            
                SkRect domain;

            
                domain.fLeft = d->fRandom->nextUScalar1();

            
                domain.fRight = d->fRandom->nextRangeScalar(domain.fLeft, SK_Scalar1);

            
                domain.fTop = d->fRandom->nextUScalar1();

            
                domain.fBottom = d->fRandom->nextRangeScalar(domain.fTop, SK_Scalar1);

            
                GrTextureDomain::Mode mode =

            
                    (GrTextureDomain::Mode) d->fRandom->nextULessThan(GrTextureDomain::kModeCount);

            
                const SkMatrix& matrix = GrTest::TestMatrix(d->fRandom);

            
                bool bilerp = mode != GrTextureDomain::kRepeat_Mode ? d->fRandom->nextBool() : false;

            
                GrCoordSet coords = d->fRandom->nextBool() ? kLocal_GrCoordSet : kDevice_GrCoordSet;

            
                return GrTextureDomainEffect::Make(

            
                    d->fTextures[texIdx],

            
                    nullptr,

            
                    matrix,

            
                    domain,

            
                    mode,

            
                    bilerp ? GrTextureParams::kBilerp_FilterMode : GrTextureParams::kNone_FilterMode,

            
                    coords);

            
            }
	/*
	* Copyright 2012 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "GrTextureDomain.h"
	#include "GrInvariantOutput.h"
	#include "GrSimpleTextureEffect.h"
	#include "SkFloatingPoint.h"
	#include "glsl/GrGLSLFragmentProcessor.h"
	#include "glsl/GrGLSLFragmentShaderBuilder.h"
	#include "glsl/GrGLSLProgramDataManager.h"
	#include "glsl/GrGLSLSampler.h"
	#include "glsl/GrGLSLShaderBuilder.h"
	#include "glsl/GrGLSLUniformHandler.h"

	GrTextureDomain::GrTextureDomain(const SkRect& domain, Mode mode, int index)
	: fIndex(index) {

	static const SkRect kFullRect = {0, 0, SK_Scalar1, SK_Scalar1};
	if (domain.contains(kFullRect) && kClamp_Mode == mode) {
	fMode = kIgnore_Mode;
	} else {
	fMode = mode;
	}

	if (fMode != kIgnore_Mode) {
	// We don't currently handle domains that are empty or don't intersect the texture.
	// It is OK if the domain rect is a line or point, but it should not be inverted. We do not
	// handle rects that do not intersect the [0..1]x[0..1] rect.
	SkASSERT(domain.fLeft <= domain.fRight);
	SkASSERT(domain.fTop <= domain.fBottom);
	fDomain.fLeft = SkScalarPin(domain.fLeft, kFullRect.fLeft, kFullRect.fRight);
	fDomain.fRight = SkScalarPin(domain.fRight, kFullRect.fLeft, kFullRect.fRight);
	fDomain.fTop = SkScalarPin(domain.fTop, kFullRect.fTop, kFullRect.fBottom);
	fDomain.fBottom = SkScalarPin(domain.fBottom, kFullRect.fTop, kFullRect.fBottom);
	SkASSERT(fDomain.fLeft <= fDomain.fRight);
	SkASSERT(fDomain.fTop <= fDomain.fBottom);
	}
	}

	//////////////////////////////////////////////////////////////////////////////

	void GrTextureDomain::GLDomain::sampleTexture(GrGLSLShaderBuilder* builder,
	GrGLSLUniformHandler* uniformHandler,
	const GrGLSLCaps* glslCaps,
	const GrTextureDomain& textureDomain,
	const char* outColor,
	const SkString& inCoords,
	GrGLSLFragmentProcessor::SamplerHandle sampler,
	const char* inModulateColor) {
	SkASSERT((Mode)-1 == fMode \|\| textureDomain.mode() == fMode);
	SkDEBUGCODE(fMode = textureDomain.mode();)

	if (textureDomain.mode() != kIgnore_Mode && !fDomainUni.isValid()) {
	const char* name;
	SkString uniName("TexDom");
	if (textureDomain.fIndex >= 0) {
	uniName.appendS32(textureDomain.fIndex);
	}
	fDomainUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
	kVec4f_GrSLType, kDefault_GrSLPrecision,
	uniName.c_str(), &name);
	fDomainName = name;
	}

	switch (textureDomain.mode()) {
	case kIgnore_Mode: {
	builder->codeAppendf("%s = ", outColor);
	builder->appendTextureLookupAndModulate(inModulateColor, sampler,
	inCoords.c_str());
	builder->codeAppend(";");
	break;
	}
	case kClamp_Mode: {
	SkString clampedCoords;
	clampedCoords.appendf("clamp(%s, %s.xy, %s.zw)",
	inCoords.c_str(), fDomainName.c_str(), fDomainName.c_str());

	builder->codeAppendf("%s = ", outColor);
	builder->appendTextureLookupAndModulate(inModulateColor, sampler,
	clampedCoords.c_str());
	builder->codeAppend(";");
	break;
	}
	case kDecal_Mode: {
	// Add a block since we're going to declare variables.
	GrGLSLShaderBuilder::ShaderBlock block(builder);

	const char* domain = fDomainName.c_str();
	if (!glslCaps->canUseAnyFunctionInShader()) {
	// On the NexusS and GalaxyNexus, the other path (with the 'any'
	// call) causes the compilation error "Calls to any function that
	// may require a gradient calculation inside a conditional block
	// may return undefined results". This appears to be an issue with
	// the 'any' call since even the simple "result=black; if (any())
	// result=white;" code fails to compile.
	builder->codeAppend("vec4 outside = vec4(0.0, 0.0, 0.0, 0.0);");
	builder->codeAppend("vec4 inside = ");
	builder->appendTextureLookupAndModulate(inModulateColor, sampler,
	inCoords.c_str());
	builder->codeAppend(";");

	builder->appendPrecisionModifier(kHigh_GrSLPrecision);
	builder->codeAppendf("float x = (%s).x;", inCoords.c_str());
	builder->appendPrecisionModifier(kHigh_GrSLPrecision);
	builder->codeAppendf("float y = (%s).y;", inCoords.c_str());

	builder->codeAppendf("x = abs(2.0*(x - %s.x)/(%s.z - %s.x) - 1.0);",
	domain, domain, domain);
	builder->codeAppendf("y = abs(2.0*(y - %s.y)/(%s.w - %s.y) - 1.0);",
	domain, domain, domain);
	builder->codeAppend("float blend = step(1.0, max(x, y));");
	builder->codeAppendf("%s = mix(inside, outside, blend);", outColor);
	} else {
	builder->codeAppend("bvec4 outside;\n");
	builder->codeAppendf("outside.xy = lessThan(%s, %s.xy);", inCoords.c_str(),
	domain);
	builder->codeAppendf("outside.zw = greaterThan(%s, %s.zw);", inCoords.c_str(),
	domain);
	builder->codeAppendf("%s = any(outside) ? vec4(0.0, 0.0, 0.0, 0.0) : ",
	outColor);
	builder->appendTextureLookupAndModulate(inModulateColor, sampler,
	inCoords.c_str());
	builder->codeAppend(";");
	}
	break;
	}
	case kRepeat_Mode: {
	SkString clampedCoords;
	clampedCoords.printf("mod(%s - %s.xy, %s.zw - %s.xy) + %s.xy",
	inCoords.c_str(), fDomainName.c_str(), fDomainName.c_str(),
	fDomainName.c_str(), fDomainName.c_str());

	builder->codeAppendf("%s = ", outColor);
	builder->appendTextureLookupAndModulate(inModulateColor, sampler,
	clampedCoords.c_str());
	builder->codeAppend(";");
	break;
	}
	}
	}

	void GrTextureDomain::GLDomain::setData(const GrGLSLProgramDataManager& pdman,
	const GrTextureDomain& textureDomain,
	GrSurfaceOrigin textureOrigin) {
	SkASSERT(textureDomain.mode() == fMode);
	if (kIgnore_Mode != textureDomain.mode()) {
	float values[kPrevDomainCount] = {
	SkScalarToFloat(textureDomain.domain().left()),
	SkScalarToFloat(textureDomain.domain().top()),
	SkScalarToFloat(textureDomain.domain().right()),
	SkScalarToFloat(textureDomain.domain().bottom())
	};
	// vertical flip if necessary
	if (kBottomLeft_GrSurfaceOrigin == textureOrigin) {
	values[1] = 1.0f - values[1];
	values[3] = 1.0f - values[3];
	// The top and bottom were just flipped, so correct the ordering
	// of elements so that values = (l, t, r, b).
	SkTSwap(values[1], values[3]);
	}
	if (0 != memcmp(values, fPrevDomain, kPrevDomainCount * sizeof(float))) {
	pdman.set4fv(fDomainUni, 1, values);
	memcpy(fPrevDomain, values, kPrevDomainCount * sizeof(float));
	}
	}
	}


	//////////////////////////////////////////////////////////////////////////////

	class GrGLTextureDomainEffect : public GrGLSLFragmentProcessor {
	public:
	void emitCode(EmitArgs&) override;

	static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*);

	protected:
	void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;

	private:
	GrTextureDomain::GLDomain fGLDomain;
	typedef GrGLSLFragmentProcessor INHERITED;
	};

	void GrGLTextureDomainEffect::emitCode(EmitArgs& args) {
	const GrTextureDomainEffect& textureDomainEffect = args.fFp.cast<GrTextureDomainEffect>();
	const GrTextureDomain& domain = textureDomainEffect.textureDomain();

	GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
	SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0);
	fGLDomain.sampleTexture(fragBuilder,
	args.fUniformHandler,
	args.fGLSLCaps,
	domain,
	args.fOutputColor,
	coords2D,
	args.fTexSamplers[0],
	args.fInputColor);
	}

	void GrGLTextureDomainEffect::onSetData(const GrGLSLProgramDataManager& pdman,
	const GrProcessor& processor) {
	const GrTextureDomainEffect& textureDomainEffect = processor.cast<GrTextureDomainEffect>();
	const GrTextureDomain& domain = textureDomainEffect.textureDomain();
	fGLDomain.setData(pdman, domain, processor.texture(0)->origin());
	}

	void GrGLTextureDomainEffect::GenKey(const GrProcessor& processor, const GrGLSLCaps&,
	GrProcessorKeyBuilder* b) {
	const GrTextureDomain& domain = processor.cast<GrTextureDomainEffect>().textureDomain();
	b->add32(GrTextureDomain::GLDomain::DomainKey(domain));
	}


	///////////////////////////////////////////////////////////////////////////////

	sk_sp<GrFragmentProcessor> GrTextureDomainEffect::Make(GrTexture* texture,
	sk_sp<GrColorSpaceXform> colorSpaceXform,
	const SkMatrix& matrix,
	const SkRect& domain,
	GrTextureDomain::Mode mode,
	GrTextureParams::FilterMode filterMode,
	GrCoordSet coordSet) {
	static const SkRect kFullRect = {0, 0, SK_Scalar1, SK_Scalar1};
	if (GrTextureDomain::kIgnore_Mode == mode \|\|
	(GrTextureDomain::kClamp_Mode == mode && domain.contains(kFullRect))) {
	return GrSimpleTextureEffect::Make(texture, std::move(colorSpaceXform), matrix, filterMode);
	} else {
	return sk_sp<GrFragmentProcessor>(
	new GrTextureDomainEffect(texture, std::move(colorSpaceXform), matrix, domain, mode,
	filterMode, coordSet));
	}
	}

	GrTextureDomainEffect::GrTextureDomainEffect(GrTexture* texture,
	sk_sp<GrColorSpaceXform> colorSpaceXform,
	const SkMatrix& matrix,
	const SkRect& domain,
	GrTextureDomain::Mode mode,
	GrTextureParams::FilterMode filterMode,
	GrCoordSet coordSet)
	: GrSingleTextureEffect(texture, std::move(colorSpaceXform), matrix, filterMode, coordSet)
	, fTextureDomain(domain, mode) {
	SkASSERT(mode != GrTextureDomain::kRepeat_Mode \|\|
	filterMode == GrTextureParams::kNone_FilterMode);
	this->initClassID<GrTextureDomainEffect>();
	}

	GrTextureDomainEffect::~GrTextureDomainEffect() {}

	void GrTextureDomainEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
	GrProcessorKeyBuilder* b) const {
	GrGLTextureDomainEffect::GenKey(*this, caps, b);
	}

	GrGLSLFragmentProcessor* GrTextureDomainEffect::onCreateGLSLInstance() const {
	return new GrGLTextureDomainEffect;
	}

	bool GrTextureDomainEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
	const GrTextureDomainEffect& s = sBase.cast<GrTextureDomainEffect>();
	return this->fTextureDomain == s.fTextureDomain;
	}

	void GrTextureDomainEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
	if (GrTextureDomain::kDecal_Mode == fTextureDomain.mode()) { // TODO: helper
	if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {
	inout->mulByUnknownSingleComponent();
	} else {
	inout->mulByUnknownFourComponents();
	}
	} else {
	this->updateInvariantOutputForModulation(inout);
	}
	}

	///////////////////////////////////////////////////////////////////////////////

	GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrTextureDomainEffect);

	sk_sp<GrFragmentProcessor> GrTextureDomainEffect::TestCreate(GrProcessorTestData* d) {
	int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :
	GrProcessorUnitTest::kAlphaTextureIdx;
	SkRect domain;
	domain.fLeft = d->fRandom->nextUScalar1();
	domain.fRight = d->fRandom->nextRangeScalar(domain.fLeft, SK_Scalar1);
	domain.fTop = d->fRandom->nextUScalar1();
	domain.fBottom = d->fRandom->nextRangeScalar(domain.fTop, SK_Scalar1);
	GrTextureDomain::Mode mode =
	(GrTextureDomain::Mode) d->fRandom->nextULessThan(GrTextureDomain::kModeCount);
	const SkMatrix& matrix = GrTest::TestMatrix(d->fRandom);
	bool bilerp = mode != GrTextureDomain::kRepeat_Mode ? d->fRandom->nextBool() : false;
	GrCoordSet coords = d->fRandom->nextBool() ? kLocal_GrCoordSet : kDevice_GrCoordSet;
	return GrTextureDomainEffect::Make(
	d->fTextures[texIdx],
	nullptr,
	matrix,
	domain,
	mode,
	bilerp ? GrTextureParams::kBilerp_FilterMode : GrTextureParams::kNone_FilterMode,
	coords);
	}