Inheritance diagram for PDLCDXferProcessor:

Public Member Functions
const char *	name () const override

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

Public Member Functions inherited from GrXferProcessor
void	addToKey (const GrShaderCaps &, skgpu::KeyBuilder , const GrSurfaceOrigin originIfDstTexture, bool usesInputAttachmentForDstRead) const

virtual std::unique_ptr< ProgramImpl >	makeProgramImpl () const =0

virtual GrXferBarrierType	xferBarrierType (const GrCaps &caps) const

skgpu::BlendInfo	getBlendInfo () const

bool	willReadDstColor () const

bool	hasSecondaryOutput () const

bool	isLCD () const

bool	isEqual (const GrXferProcessor &that) const

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

virtual const char *	name () const =0

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

Public Member Functions inherited from GrNonAtomicRef< GrXferProcessor >
	GrNonAtomicRef ()

bool	unique () const

int	refCnt () const

void	ref () const

void	unref () const

Public Member Functions inherited from SkNoncopyable
	SkNoncopyable ()=default

	SkNoncopyable (SkNoncopyable &&)=default

SkNoncopyable &	operator= (SkNoncopyable &&)=default

Static Public Member Functions
static sk_sp< const GrXferProcessor >	Make (SkBlendMode mode, const GrProcessorAnalysisColor &inputColor)

Additional Inherited Members
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 }

Protected Member Functions inherited from GrXferProcessor
	GrXferProcessor (ClassID classID)

	GrXferProcessor (ClassID classID, bool willReadDstColor, GrProcessorAnalysisCoverage)

Protected Member Functions inherited from GrProcessor
	GrProcessor (ClassID classID)

	GrProcessor (const GrProcessor &)=delete

GrProcessor &	operator= (const GrProcessor &)=delete

Protected Attributes inherited from GrProcessor
const ClassID	fClassID

Detailed Description

Definition at line 212 of file GrPorterDuffXferProcessor.cpp.

Member Function Documentation

◆ Make()

sk_sp< const GrXferProcessor > PDLCDXferProcessor::Make	(	SkBlendMode	mode,
		const GrProcessorAnalysisColor &	inputColor
	)

static

Definition at line 253 of file GrPorterDuffXferProcessor.cpp.

                                                                                             {
    if (SkBlendMode::kSrcOver != mode) {
        return nullptr;
    }
    SkPMColor4f blendConstantPM;
    if (!color.isConstant(&blendConstantPM)) {
        return nullptr;
    }
    SkColor4f blendConstantUPM = blendConstantPM.unpremul();
    float alpha = blendConstantUPM.fA;
    blendConstantPM = { blendConstantUPM.fR, blendConstantUPM.fG, blendConstantUPM.fB, 1 };
    return sk_sp<GrXferProcessor>(new PDLCDXferProcessor(blendConstantPM, alpha));
}

◆ makeProgramImpl()

std::unique_ptr< GrXferProcessor::ProgramImpl > PDLCDXferProcessor::makeProgramImpl ( ) const

overridevirtual

Returns a new instance of the appropriate GL implementation class for the given GrXferProcessor; caller is responsible for deleting the object.

Implements GrXferProcessor.

Definition at line 268 of file GrPorterDuffXferProcessor.cpp.

                                                                                    {
    class Impl : public ProgramImpl {
    private:
        void emitOutputsForBlendState(const EmitArgs& args) override {
            const char* alpha;
            fAlphaUniform = args.fUniformHandler->addUniform(nullptr,
                                                             kFragment_GrShaderFlag,
                                                             SkSLType::kHalf,
                                                             "alpha",
                                                             &alpha);
            GrGLSLXPFragmentBuilder* fragBuilder = args.fXPFragBuilder;
            // We want to force our primary output to be alpha * Coverage, where alpha is the alpha
            // value of the src color. We know that there are no color stages (or we wouldn't have
            // created this xp) and the r,g, and b channels of the op's input color are baked into
            // the blend constant.
            SkASSERT(args.fInputCoverage);
            fragBuilder->codeAppendf("%s = %s * %s;",
                                     args.fOutputPrimary,
                                     alpha, args.fInputCoverage);
        }
 
        void onSetData(const GrGLSLProgramDataManager& pdm, const GrXferProcessor& xp) override {
            float alpha = xp.cast<PDLCDXferProcessor>().fAlpha;
            if (fLastAlpha != alpha) {
                pdm.set1f(fAlphaUniform, alpha);
                fLastAlpha = alpha;
            }
        }
 
        GrGLSLUniformHandler::UniformHandle fAlphaUniform;
        float fLastAlpha = SK_FloatNaN;
    };
 
    return std::make_unique<Impl>();
}

◆ name()

const char * PDLCDXferProcessor::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 217 of file GrPorterDuffXferProcessor.cpp.

217{ return "Porter Duff LCD"; }

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

third_party/skia/src/gpu/ganesh/effects/GrPorterDuffXferProcessor.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ Make()

◆ makeProgramImpl()

◆ name()