#include <GrModulateAtlasCoverageEffect.h>

Inheritance diagram for GrModulateAtlasCoverageEffect:

Public Types
enum class	Flags { kNone = 0 , kInvertCoverage = 1 << 0 , kCheckBounds = 1 << 1 }

Public Types inherited from GrProcessor
enum	ClassID { kNull_ClassID , kAttributeTestProcessor_ClassID , kBigKeyProcessor_ClassID , kBlendFragmentProcessor_ClassID , kBlockInputFragmentProcessor_ClassID , kButtCapStrokedCircleGeometryProcessor_ClassID , kCircleGeometryProcessor_ClassID , kCircularRRectEffect_ClassID , kClockwiseTestProcessor_ClassID , kColorTableEffect_ClassID , kCoverageSetOpXP_ClassID , kCustomXP_ClassID , kDashingCircleEffect_ClassID , kDashingLineEffect_ClassID , kDefaultGeoProc_ClassID , kDeviceSpace_ClassID , kDIEllipseGeometryProcessor_ClassID , kDisableColorXP_ClassID , kDrawAtlasPathShader_ClassID , kEllipseGeometryProcessor_ClassID , kEllipticalRRectEffect_ClassID , kFwidthSquircleTestProcessor_ClassID , kGP_ClassID , kGrBicubicEffect_ClassID , kGrBitmapTextGeoProc_ClassID , kGrColorSpaceXformEffect_ClassID , kGrConicEffect_ClassID , kGrConvexPolyEffect_ClassID , kGrDiffuseLightingEffect_ClassID , kGrDisplacementMapEffect_ClassID , kGrDistanceFieldA8TextGeoProc_ClassID , kGrDistanceFieldLCDTextGeoProc_ClassID , kGrDistanceFieldPathGeoProc_ClassID , kGrFillRRectOp_Processor_ClassID , kGrGaussianConvolutionFragmentProcessor_ClassID , kGrMatrixConvolutionEffect_ClassID , kGrMatrixEffect_ClassID , kGrMeshTestProcessor_ClassID , kGrMorphologyEffect_ClassID , kGrPerlinNoise2Effect_ClassID , kGrPipelineDynamicStateTestProcessor_ClassID , kGrQuadEffect_ClassID , kGrRRectShadowGeoProc_ClassID , kGrSkSLFP_ClassID , kGrSpecularLightingEffect_ClassID , kGrTextureEffect_ClassID , kGrUnrolledBinaryGradientColorizer_ClassID , kGrYUVtoRGBEffect_ClassID , kHighPrecisionFragmentProcessor_ClassID , kLatticeGP_ClassID , kPDLCDXferProcessor_ClassID , kPorterDuffXferProcessor_ClassID , kPremulFragmentProcessor_ClassID , kQuadEdgeEffect_ClassID , kQuadPerEdgeAAGeometryProcessor_ClassID , kSeriesFragmentProcessor_ClassID , kShaderPDXferProcessor_ClassID , kSurfaceColorProcessor_ClassID , kSwizzleFragmentProcessor_ClassID , kTessellate_BoundingBoxShader_ClassID , kTessellate_GrModulateAtlasCoverageEffect_ClassID , kTessellate_GrStrokeTessellationShader_ClassID , kTessellate_HullShader_ClassID , kTessellate_MiddleOutShader_ClassID , kTessellate_SimpleTriangleShader_ClassID , kTessellationTestTriShader_ClassID , kTestFP_ClassID , kTestRectOp_ClassID , kVertexColorSpaceBenchGP_ClassID , kVerticesGP_ClassID }

Public Member Functions
	GR_DECL_BITFIELD_CLASS_OPS_FRIENDS (Flags)

	GrModulateAtlasCoverageEffect (Flags flags, std::unique_ptr< GrFragmentProcessor > inputFP, GrSurfaceProxyView atlasView, const SkMatrix &devToAtlasMatrix, const SkIRect &devIBounds)

	GrModulateAtlasCoverageEffect (const GrModulateAtlasCoverageEffect &that)

const char *	name () const override

std::unique_ptr< GrFragmentProcessor >	clone () const override

Public Member Functions inherited from GrFragmentProcessor
const GrFragmentProcessor *	parent () const

std::unique_ptr< ProgramImpl >	makeProgramImpl () const

void	addToKey (const GrShaderCaps &caps, skgpu::KeyBuilder *b) const

int	numChildProcessors () const

int	numNonNullChildProcessors () const

GrFragmentProcessor *	childProcessor (int index)

const GrFragmentProcessor *	childProcessor (int index) const

	SkDEBUGCODE (bool isInstantiated() const ;) bool willReadDstColor() const

bool	isBlendFunction () const

bool	usesSampleCoordsDirectly () const

bool	usesSampleCoords () const

const SkSL::SampleUsage &	sampleUsage () const

bool	compatibleWithCoverageAsAlpha () const

bool	preservesOpaqueInput () const

bool	hasConstantOutputForConstantInput (SkPMColor4f inputColor, SkPMColor4f *outputColor) const

bool	hasConstantOutputForConstantInput () const

void	clearConstantOutputForConstantInputFlag ()

bool	isEqual (const GrFragmentProcessor &that) const

void	visitProxies (const GrVisitProxyFunc &) const

void	visitTextureEffects (const std::function< void(const GrTextureEffect &)> &) const

void	visitWithImpls (const std::function< void(const GrFragmentProcessor &, ProgramImpl &)> &, ProgramImpl &) const

GrTextureEffect *	asTextureEffect ()

const GrTextureEffect *	asTextureEffect () const

Public Member Functions inherited from GrProcessor
virtual	~GrProcessor ()=default

void *	operator new (size_t size)

void *	operator new (size_t object_size, size_t footer_size)

void	operator delete (void *target)

void *	operator new (size_t size, void *placement)

void	operator delete (void target, void placement)

template<typename T >
const T &	cast () const

ClassID	classID () const

Private Member Functions
void	onAddToKey (const GrShaderCaps &, skgpu::KeyBuilder *b) const override

bool	onIsEqual (const GrFragmentProcessor &that) const override

std::unique_ptr< ProgramImpl >	onMakeProgramImpl () const override

Additional Inherited Members
Static Public Member Functions inherited from GrFragmentProcessor
static std::unique_ptr< GrFragmentProcessor >	MakeColor (SkPMColor4f color)

static std::unique_ptr< GrFragmentProcessor >	MulInputByChildAlpha (std::unique_ptr< GrFragmentProcessor > child)

static std::unique_ptr< GrFragmentProcessor >	ApplyPaintAlpha (std::unique_ptr< GrFragmentProcessor > child)

static std::unique_ptr< GrFragmentProcessor >	ModulateRGBA (std::unique_ptr< GrFragmentProcessor > child, const SkPMColor4f &color)

static std::unique_ptr< GrFragmentProcessor >	OverrideInput (std::unique_ptr< GrFragmentProcessor >, const SkPMColor4f &)

static std::unique_ptr< GrFragmentProcessor >	DisableCoverageAsAlpha (std::unique_ptr< GrFragmentProcessor >)

static std::unique_ptr< GrFragmentProcessor >	DestColor ()

static std::unique_ptr< GrFragmentProcessor >	SwizzleOutput (std::unique_ptr< GrFragmentProcessor >, const skgpu::Swizzle &)

static std::unique_ptr< GrFragmentProcessor >	ClampOutput (std::unique_ptr< GrFragmentProcessor >)

static std::unique_ptr< GrFragmentProcessor >	Compose (std::unique_ptr< GrFragmentProcessor > f, std::unique_ptr< GrFragmentProcessor > g)

static std::unique_ptr< GrFragmentProcessor >	ColorMatrix (std::unique_ptr< GrFragmentProcessor > child, const float matrix[20], bool unpremulInput, bool clampRGBOutput, bool premulOutput)

static std::unique_ptr< GrFragmentProcessor >	SurfaceColor ()

static std::unique_ptr< GrFragmentProcessor >	DeviceSpace (std::unique_ptr< GrFragmentProcessor >)

static std::unique_ptr< GrFragmentProcessor >	Rect (std::unique_ptr< GrFragmentProcessor >, GrClipEdgeType, SkRect)

static GrFPResult	Circle (std::unique_ptr< GrFragmentProcessor >, GrClipEdgeType, SkPoint center, float radius)

static GrFPResult	Ellipse (std::unique_ptr< GrFragmentProcessor >, GrClipEdgeType, SkPoint center, SkPoint radii, const GrShaderCaps &)

static std::unique_ptr< GrFragmentProcessor >	HighPrecision (std::unique_ptr< GrFragmentProcessor >)

Protected Types inherited from GrFragmentProcessor
enum	OptimizationFlags : uint32_t { kNone_OptimizationFlags , kCompatibleWithCoverageAsAlpha_OptimizationFlag = 0x1 , kPreservesOpaqueInput_OptimizationFlag = 0x2 , kConstantOutputForConstantInput_OptimizationFlag = 0x4 , kAll_OptimizationFlags }

Protected Member Functions inherited from GrFragmentProcessor
	GrFragmentProcessor (ClassID classID, OptimizationFlags optimizationFlags)

	GrFragmentProcessor (const GrFragmentProcessor &src)

OptimizationFlags	optimizationFlags () const

void	registerChild (std::unique_ptr< GrFragmentProcessor > child, SkSL::SampleUsage sampleUsage=SkSL::SampleUsage::PassThrough())

void	cloneAndRegisterAllChildProcessors (const GrFragmentProcessor &src)

void	setUsesSampleCoordsDirectly ()

void	setWillReadDstColor ()

void	setIsBlendFunction ()

void	mergeOptimizationFlags (OptimizationFlags flags)

Protected Member Functions inherited from GrProcessor
	GrProcessor (ClassID classID)

	GrProcessor (const GrProcessor &)=delete

GrProcessor &	operator= (const GrProcessor &)=delete

Static Protected Member Functions inherited from GrFragmentProcessor
static OptimizationFlags	ModulateForSamplerOptFlags (SkAlphaType alphaType, bool samplingDecal)

static OptimizationFlags	ModulateForClampedSamplerOptFlags (SkAlphaType alphaType)

static OptimizationFlags	ProcessorOptimizationFlags (const GrFragmentProcessor *fp)

static SkPMColor4f	ConstantOutputForConstantInput (const GrFragmentProcessor *fp, const SkPMColor4f &input)

Protected Attributes inherited from GrProcessor
const ClassID	fClassID

Detailed Description

Definition at line 23 of file GrModulateAtlasCoverageEffect.h.

Member Enumeration Documentation

◆ Flags

enum class GrModulateAtlasCoverageEffect::Flags

strong

Enumerator
kNone
kInvertCoverage
kCheckBounds

Definition at line 25 of file GrModulateAtlasCoverageEffect.h.

                     {
        kNone = 0,
        kInvertCoverage = 1 << 0,  // Return inputColor * (1 - atlasCoverage).
        kCheckBounds = 1 << 1  // Clamp atlasCoverage to 0 if outside the path's valid atlas bounds.
    };

Constructor & Destructor Documentation

◆ GrModulateAtlasCoverageEffect() [1/2]

GrModulateAtlasCoverageEffect::GrModulateAtlasCoverageEffect	(	Flags	flags,
		std::unique_ptr< GrFragmentProcessor >	inputFP,
		GrSurfaceProxyView	atlasView,
		const SkMatrix &	devToAtlasMatrix,
		const SkIRect &	devIBounds
	)

Definition at line 29 of file GrModulateAtlasCoverageEffect.cpp.

        : GrFragmentProcessor(kTessellate_GrModulateAtlasCoverageEffect_ClassID,
                              kCompatibleWithCoverageAsAlpha_OptimizationFlag)
        , fFlags(flags)
        , fBounds((fFlags & Flags::kCheckBounds) ? devIBounds : SkIRect{0,0,0,0}) {
    this->registerChild(std::move(inputFP));
    this->registerChild(GrTextureEffect::Make(std::move(atlasView), kUnknown_SkAlphaType,
                                              devToAtlasMatrix, GrSamplerState::Filter::kNearest),
                        SkSL::SampleUsage::Explicit());
}

◆ GrModulateAtlasCoverageEffect() [2/2]

GrModulateAtlasCoverageEffect::GrModulateAtlasCoverageEffect ( const GrModulateAtlasCoverageEffect & that )

Definition at line 45 of file GrModulateAtlasCoverageEffect.cpp.

        : GrFragmentProcessor(that)
        , fFlags(that.fFlags)
        , fBounds(that.fBounds) {}

Member Function Documentation

◆ clone()

std::unique_ptr< GrFragmentProcessor > GrModulateAtlasCoverageEffect::clone ( ) const

inlineoverridevirtual

Makes a copy of this fragment processor that draws equivalently to the original. If the processor has child processors they are cloned as well.

Implements GrFragmentProcessor.

Definition at line 43 of file GrModulateAtlasCoverageEffect.h.

                                                              {
        return std::make_unique<GrModulateAtlasCoverageEffect>(*this);
    }

◆ GR_DECL_BITFIELD_CLASS_OPS_FRIENDS()

GrModulateAtlasCoverageEffect::GR_DECL_BITFIELD_CLASS_OPS_FRIENDS ( Flags )

◆ name()

const char * GrModulateAtlasCoverageEffect::name ( ) const

inlineoverridevirtual

Human-meaningful string to identify this processor; may be embedded in generated shader code and must be a legal SkSL identifier prefix.

Implements GrProcessor.

Definition at line 39 of file GrModulateAtlasCoverageEffect.h.

                                      {
        return "GrModulateAtlasCoverageFP";
    }

◆ onAddToKey()

void GrModulateAtlasCoverageEffect::onAddToKey	(	const GrShaderCaps &	,
		skgpu::KeyBuilder *	b
	)		const

overrideprivatevirtual

Implements GrFragmentProcessor.

Definition at line 51 of file GrModulateAtlasCoverageEffect.cpp.

                                                                         {
    b->add32(fFlags & Flags::kCheckBounds);
}

◆ onIsEqual()

bool GrModulateAtlasCoverageEffect::onIsEqual ( const GrFragmentProcessor & ) const

inlineoverrideprivatevirtual

Subclass implements this to support isEqual(). It will only be called if it is known that the two processors are of the same subclass (i.e. have the same ClassID).

Implements GrFragmentProcessor.

Definition at line 50 of file GrModulateAtlasCoverageEffect.h.

                                                                   {
        auto fp = that.cast<GrModulateAtlasCoverageEffect>();
        return fFlags == fp.fFlags && fBounds == fp.fBounds;
    }

◆ onMakeProgramImpl()

std::unique_ptr< GrFragmentProcessor::ProgramImpl > GrModulateAtlasCoverageEffect::onMakeProgramImpl ( ) const

overrideprivatevirtual

Returns a new instance of the appropriate ProgramImpl subclass for the given GrFragmentProcessor. It will emit the appropriate code and live with the cached program to setup uniform data for each draw that uses the program.

Implements GrFragmentProcessor.

Definition at line 57 of file GrModulateAtlasCoverageEffect.cpp.

                                                       {
    class Impl : public ProgramImpl {
        void emitCode(EmitArgs& args) override {
            auto fp = args.fFp.cast<GrModulateAtlasCoverageEffect>();
            auto f = args.fFragBuilder;
            auto uniHandler = args.fUniformHandler;
            SkString inputColor = this->invokeChild(0, args);
            f->codeAppend("half coverage = 0;");
            if (fp.fFlags & Flags::kCheckBounds) {
                const char* boundsName;
                fBoundsUniform = uniHandler->addUniform(&fp, kFragment_GrShaderFlag,
                                                        SkSLType::kFloat4, "bounds", &boundsName);
                // Are we inside the path's valid atlas bounds?
                f->codeAppendf("if (all(greaterThan(sk_FragCoord.xy, %s.xy)) && "
                                   "all(lessThan(sk_FragCoord.xy, %s.zw))) ",
                               boundsName, boundsName);
            }
            f->codeAppendf("{");
            SkString atlasCoverage = this->invokeChild(1, args, "sk_FragCoord.xy");
            f->codeAppendf("coverage = %s.a;", atlasCoverage.c_str());
            f->codeAppendf("}");
            const char* coverageMaybeInvertName;
            fCoverageMaybeInvertUniform = uniHandler->addUniform(&fp, kFragment_GrShaderFlag,
                                                                 SkSLType::kHalf2, "coverageInvert",
                                                                 &coverageMaybeInvertName);
            // Invert coverage, if needed.
            f->codeAppendf("coverage = coverage * %s.x + %s.y;",
                           coverageMaybeInvertName, coverageMaybeInvertName);
            f->codeAppendf("return %s * coverage;", inputColor.c_str());
        }
 
    private:
        void onSetData(const GrGLSLProgramDataManager& pdman,
                       const GrFragmentProcessor& processor) override {
            const auto& fp = processor.cast<GrModulateAtlasCoverageEffect>();
            if (fp.fFlags & Flags::kCheckBounds) {
                pdman.set4fv(fBoundsUniform, 1, SkRect::Make(fp.fBounds).asScalars());
            }
            if (fp.fFlags & Flags::kInvertCoverage) {
                pdman.set2f(fCoverageMaybeInvertUniform, -1, 1);  // -1*coverage + 1 = 1 - coverage.
            } else {
                pdman.set2f(fCoverageMaybeInvertUniform, 1, 0);  // 1*coverage + 0 = coverage.
            }
        }
        UniformHandle fBoundsUniform;
        UniformHandle fCoverageMaybeInvertUniform;
    };
 
    return std::make_unique<Impl>();
}

The documentation for this class was generated from the following files:

third_party/skia/src/gpu/ganesh/effects/GrModulateAtlasCoverageEffect.h
third_party/skia/src/gpu/ganesh/effects/GrModulateAtlasCoverageEffect.cpp

Public Types

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Flags

Constructor & Destructor Documentation

◆ GrModulateAtlasCoverageEffect() [1/2]

◆ GrModulateAtlasCoverageEffect() [2/2]

Member Function Documentation

◆ clone()

◆ GR_DECL_BITFIELD_CLASS_OPS_FRIENDS()

◆ name()

◆ onAddToKey()

◆ onIsEqual()

◆ onMakeProgramImpl()