#include <AnalyticBlurRenderStep.h>

Inheritance diagram for skgpu::graphite::AnalyticBlurRenderStep:

Public Member Functions
	AnalyticBlurRenderStep ()

	~AnalyticBlurRenderStep () override=default

std::string	vertexSkSL () const override

std::string	texturesAndSamplersSkSL (const ResourceBindingRequirements &, int *nextBindingIndex) const override

const char *	fragmentCoverageSkSL () const override

void	writeVertices (DrawWriter *, const DrawParams &, skvx::ushort2 ssboIndices) const override

void	writeUniformsAndTextures (const DrawParams &, PipelineDataGatherer *) const override

Public Member Functions inherited from skgpu::graphite::RenderStep
virtual	~RenderStep ()=default

virtual void	writeVertices (DrawWriter *, const DrawParams &, skvx::ushort2 ssboIndices) const =0

virtual void	writeUniformsAndTextures (const DrawParams &, PipelineDataGatherer *) const =0

virtual std::string	vertexSkSL () const =0

virtual std::string	texturesAndSamplersSkSL (const ResourceBindingRequirements &, int *nextBindingIndex) const

virtual const char *	fragmentCoverageSkSL () const

virtual const char *	fragmentColorSkSL () const

uint32_t	uniqueID () const

const char *	name () const

bool	requiresMSAA () const

bool	performsShading () const

bool	hasTextures () const

bool	emitsPrimitiveColor () const

bool	outsetBoundsForAA () const

Coverage	coverage () const

PrimitiveType	primitiveType () const

size_t	vertexStride () const

size_t	instanceStride () const

size_t	numUniforms () const

size_t	numVertexAttributes () const

size_t	numInstanceAttributes () const

SkSpan< const Uniform >	uniforms () const

SkSpan< const Attribute >	vertexAttributes () const

SkSpan< const Attribute >	instanceAttributes () const

SkSpan< const Varying >	varyings () const

const DepthStencilSettings &	depthStencilSettings () const

SkEnumBitMask< DepthStencilFlags >	depthStencilFlags () const

Additional Inherited Members
Static Public Member Functions inherited from skgpu::graphite::RenderStep
static const char *	ssboIndicesAttribute ()

static const char *	ssboIndicesVarying ()

Protected Types inherited from skgpu::graphite::RenderStep
enum class	Flags : unsigned { kNone = 0b0000000 , kRequiresMSAA = 0b0000001 , kPerformsShading = 0b0000010 , kHasTextures = 0b0000100 , kEmitsCoverage = 0b0001000 , kLCDCoverage = 0b0010000 , kEmitsPrimitiveColor = 0b0100000 , kOutsetBoundsForAA = 0b1000000 }

Protected Member Functions inherited from skgpu::graphite::RenderStep
	RenderStep (std::string_view className, std::string_view variantName, SkEnumBitMask< Flags > flags, std::initializer_list< Uniform > uniforms, PrimitiveType primitiveType, DepthStencilSettings depthStencilSettings, SkSpan< const Attribute > vertexAttrs, SkSpan< const Attribute > instanceAttrs, SkSpan< const Varying > varyings={})

Detailed Description

Definition at line 15 of file AnalyticBlurRenderStep.h.

Constructor & Destructor Documentation

◆ AnalyticBlurRenderStep()

skgpu::graphite::AnalyticBlurRenderStep::AnalyticBlurRenderStep ( )

Definition at line 18 of file AnalyticBlurRenderStep.cpp.

        : RenderStep("AnalyticBlurRenderStep",
                     "",
                     Flags::kPerformsShading | Flags::kHasTextures | Flags::kEmitsCoverage,
                     /*uniforms=*/
                     {{"localToDevice", SkSLType::kFloat4x4},
                      {"deviceToScaledShape", SkSLType::kFloat3x3},
                      {"shapeData", SkSLType::kFloat4},
                      {"blurData", SkSLType::kHalf2},
                      {"shapeType", SkSLType::kInt},
                      {"depth", SkSLType::kFloat}},
                     PrimitiveType::kTriangles,
                     kDirectDepthGreaterPass,
                     /*vertexAttrs=*/
                     {{"position", VertexAttribType::kFloat2, SkSLType::kFloat2},
                      {"ssboIndices", VertexAttribType::kUShort2, SkSLType::kUShort2}},
                     /*instanceAttrs=*/{},
                     /*varyings=*/
                     // scaledShapeCoords are the fragment coordinates in local shape space, where
                     // the shape has been scaled to device space but not translated or rotated.
                     {{"scaledShapeCoords", SkSLType::kFloat2}}) {}

◆ ~AnalyticBlurRenderStep()

skgpu::graphite::AnalyticBlurRenderStep::~AnalyticBlurRenderStep ( )

overridedefault

Member Function Documentation

◆ fragmentCoverageSkSL()

const char * skgpu::graphite::AnalyticBlurRenderStep::fragmentCoverageSkSL ( ) const

overridevirtual

Reimplemented from skgpu::graphite::RenderStep.

Definition at line 53 of file AnalyticBlurRenderStep.cpp.

                                                               {
    return "outputCoverage = blur_coverage_fn(scaledShapeCoords, "
                                             "shapeData, "
                                             "blurData, "
                                             "shapeType, "
                                             "s);";
}

◆ texturesAndSamplersSkSL()

std::string skgpu::graphite::AnalyticBlurRenderStep::texturesAndSamplersSkSL	(	const ResourceBindingRequirements &	bindingReqs,
		int *	nextBindingIndex
	)		const

overridevirtual

Reimplemented from skgpu::graphite::RenderStep.

Definition at line 48 of file AnalyticBlurRenderStep.cpp.

                                                                                     {
    return EmitSamplerLayout(bindingReqs, nextBindingIndex) + " sampler2D s;";
}

◆ vertexSkSL()

std::string skgpu::graphite::AnalyticBlurRenderStep::vertexSkSL ( ) const

overridevirtual

Implements skgpu::graphite::RenderStep.

Definition at line 40 of file AnalyticBlurRenderStep.cpp.

                                                   {
    return R"(
        float4 devPosition = localToDevice * float4(position, depth, 1.0);
        stepLocalCoords = position;
        scaledShapeCoords = (deviceToScaledShape * devPosition.xy1).xy;
    )";
}

◆ writeUniformsAndTextures()

void skgpu::graphite::AnalyticBlurRenderStep::writeUniformsAndTextures	(	const DrawParams &	params,
		PipelineDataGatherer *	gatherer
	)		const

overridevirtual

Implements skgpu::graphite::RenderStep.

Definition at line 74 of file AnalyticBlurRenderStep.cpp.

                                                                                            {
    SkDEBUGCODE(UniformExpectationsValidator uev(gatherer, this->uniforms());)
 
    gatherer->write(params.transform().matrix());
 
    const AnalyticBlurMask& blur = params.geometry().analyticBlurMask();
    gatherer->write(blur.deviceToScaledShape().asM33());
    gatherer->write(blur.shapeData().asSkRect());
    gatherer->writeHalf(blur.blurData());
    gatherer->write(static_cast<int>(blur.shapeType()));
    gatherer->write(params.order().depthAsFloat());
 
    SkSamplingOptions samplingOptions = blur.shapeType() == AnalyticBlurMask::ShapeType::kRect
                                                ? SkFilterMode::kLinear
                                                : SkFilterMode::kNearest;
    constexpr SkTileMode kTileModes[2] = {SkTileMode::kClamp, SkTileMode::kClamp};
    gatherer->add(blur.refProxy(), {samplingOptions, kTileModes});
}

◆ writeVertices()

void skgpu::graphite::AnalyticBlurRenderStep::writeVertices	(	DrawWriter *	writer,
		const DrawParams &	params,
		skvx::ushort2	ssboIndices
	)		const

overridevirtual

Implements skgpu::graphite::RenderStep.

Definition at line 61 of file AnalyticBlurRenderStep.cpp.

                                                                          {
    const Rect& r = params.geometry().analyticBlurMask().drawBounds();
    DrawWriter::Vertices verts{*writer};
    verts.append(6) << skvx::float2(r.left(), r.top()) << ssboIndices
                    << skvx::float2(r.right(), r.top()) << ssboIndices
                    << skvx::float2(r.left(), r.bot()) << ssboIndices
                    << skvx::float2(r.right(), r.top()) << ssboIndices
                    << skvx::float2(r.right(), r.bot()) << ssboIndices
                    << skvx::float2(r.left(), r.bot()) << ssboIndices;
}

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

third_party/skia/src/gpu/graphite/render/AnalyticBlurRenderStep.h
third_party/skia/src/gpu/graphite/render/AnalyticBlurRenderStep.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ AnalyticBlurRenderStep()

◆ ~AnalyticBlurRenderStep()

Member Function Documentation

◆ fragmentCoverageSkSL()

◆ texturesAndSamplersSkSL()

◆ vertexSkSL()

◆ writeUniformsAndTextures()

◆ writeVertices()