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/*
* Copyright 2022 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/graphite/FactoryFunctions.h"
#include "include/core/SkSamplingOptions.h"
#include "include/gpu/graphite/precompile/PrecompileBase.h"
#include "include/gpu/graphite/precompile/PrecompileBlender.h"
#include "include/gpu/graphite/precompile/PrecompileShader.h"
#include "src/core/SkColorSpacePriv.h"
#include "src/core/SkKnownRuntimeEffects.h"
#include "src/gpu/graphite/FactoryFunctionsPriv.h"
#include "src/gpu/graphite/KeyContext.h"
#include "src/gpu/graphite/KeyHelpers.h"
#include "src/gpu/graphite/PaintParams.h"
#include "src/gpu/graphite/PaintParamsKey.h"
#include "src/gpu/graphite/PrecompileInternal.h"
#include "src/gpu/graphite/Renderer.h"
#include "src/gpu/graphite/precompile/PrecompileBaseComplete.h"
#include "src/gpu/graphite/precompile/PrecompileBasePriv.h"
#include "src/gpu/graphite/precompile/PrecompileBlenderPriv.h"
#include "src/gpu/graphite/precompile/PrecompileShaderPriv.h"
namespace skgpu::graphite {
namespace {
#ifdef SK_DEBUG
bool precompilebase_is_valid_as_child(const PrecompileBase *child) {
if (!child) {
return true;
}
switch (child->type()) {
case PrecompileBase::Type::kShader:
case PrecompileBase::Type::kColorFilter:
case PrecompileBase::Type::kBlender:
return true;
default:
return false;
}
}
#endif // SK_DEBUG
// If all the options are null the span is considered empty
bool is_empty(SkSpan<const sk_sp<PrecompileColorFilter>> options) {
if (options.empty()) {
return true;
}
for (const auto& o : options) {
if (o) {
return false;
}
}
return true;
}
} // anonymous namespace
//--------------------------------------------------------------------------------------------------
class PrecompileYUVImageShader : public PrecompileShader {
public:
PrecompileYUVImageShader() {}
private:
// non-cubic and cubic sampling
inline static constexpr int kNumIntrinsicCombinations = 2;
int numIntrinsicCombinations() const override { return kNumIntrinsicCombinations; }
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination < kNumIntrinsicCombinations);
static constexpr SkSamplingOptions kDefaultCubicSampling(SkCubicResampler::Mitchell());
static constexpr SkSamplingOptions kDefaultSampling;
YUVImageShaderBlock::ImageData imgData(desiredCombination == 1 ? kDefaultCubicSampling
: kDefaultSampling,
SkTileMode::kClamp, SkTileMode::kClamp,
SkISize::MakeEmpty(), SkRect::MakeEmpty());
YUVImageShaderBlock::AddBlock(keyContext, builder, gatherer, imgData);
}
};
sk_sp<PrecompileShader> PrecompileShaders::YUVImage() {
return sk_make_sp<PrecompileYUVImageShader>();
}
//--------------------------------------------------------------------------------------------------
class PrecompileBlendFilterImageFilter : public PrecompileImageFilter {
public:
PrecompileBlendFilterImageFilter(sk_sp<PrecompileBlender> blender,
SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs))
, fBlender(std::move(blender)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
PaintOptions paintOptions;
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha |
PrecompileImageShaderFlags::kExcludeCubic);
sk_sp<PrecompileShader> blendShader = PrecompileShaders::Blend(
SkSpan<const sk_sp<PrecompileBlender>>(&fBlender, 1),
{ imageShader },
{ imageShader });
paintOptions.setShaders({ std::move(blendShader) });
paintOptions.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
sk_sp<PrecompileBlender> fBlender;
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Arithmetic(
sk_sp<PrecompileImageFilter> background,
sk_sp<PrecompileImageFilter> foreground) {
return Blend(PrecompileBlenders::Arithmetic(), std::move(background), std::move(foreground));
}
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Blend(
SkBlendMode bm,
sk_sp<PrecompileImageFilter> background,
sk_sp<PrecompileImageFilter> foreground) {
return Blend(PrecompileBlenders::Mode(bm), std::move(background), std::move(foreground));
}
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Blend(
sk_sp<PrecompileBlender> blender,
sk_sp<PrecompileImageFilter> background,
sk_sp<PrecompileImageFilter> foreground) {
if (!blender) {
blender = PrecompileBlenders::Mode(SkBlendMode::kSrcOver);
}
if (std::optional<SkBlendMode> bm = blender->priv().asBlendMode()) {
if (bm == SkBlendMode::kSrc) {
return foreground;
} else if (bm == SkBlendMode::kDst) {
return background;
} else if (bm == SkBlendMode::kClear) {
return nullptr; // TODO: actually return PrecompileImageFilters::Empty
}
}
sk_sp<PrecompileImageFilter> inputs[2] = { std::move(background), std::move(foreground) };
return sk_make_sp<PrecompileBlendFilterImageFilter>(std::move(blender), inputs);
}
namespace {
void create_blur_imagefilter_pipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) {
PaintOptions blurPaintOptions;
// For blur imagefilters we know we don't have alpha-only textures and don't need cubic
// filtering.
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha | PrecompileImageShaderFlags::kExcludeCubic);
static const SkBlendMode kBlurBlendModes[] = { SkBlendMode::kSrc };
blurPaintOptions.setShaders({ PrecompileShadersPriv::Blur(imageShader) });
blurPaintOptions.setBlendModes(kBlurBlendModes);
blurPaintOptions.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
} // anonymous namespace
class PrecompileBlurImageFilter : public PrecompileImageFilter {
public:
PrecompileBlurImageFilter(SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
create_blur_imagefilter_pipelines(keyContext, gatherer, processCombination);
}
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Blur(
sk_sp<PrecompileImageFilter> input) {
return sk_make_sp<PrecompileBlurImageFilter>(SkSpan(&input, 1));
}
//--------------------------------------------------------------------------------------------------
class PrecompileColorFilterImageFilter : public PrecompileImageFilter {
public:
PrecompileColorFilterImageFilter(sk_sp<PrecompileColorFilter> colorFilter,
sk_sp<PrecompileImageFilter> input)
: PrecompileImageFilter(SkSpan(&input, 1))
, fColorFilter(std::move(colorFilter)) {
}
private:
sk_sp<PrecompileColorFilter> isColorFilterNode() const override {
return fColorFilter;
}
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
PaintOptions paintOptions;
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha |
PrecompileImageShaderFlags::kExcludeCubic);
static const SkBlendMode kBlendModes[] = { SkBlendMode::kDstOut };
paintOptions.setShaders({ std::move(imageShader) });
paintOptions.setColorFilters({ fColorFilter });
paintOptions.setBlendModes(kBlendModes);
paintOptions.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
sk_sp<PrecompileColorFilter> fColorFilter;
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::ColorFilter(
sk_sp<PrecompileColorFilter> colorFilter,
sk_sp<PrecompileImageFilter> input) {
if (colorFilter && input) {
sk_sp<PrecompileColorFilter> inputCF = input->isColorFilterNode();
if (inputCF) {
colorFilter = colorFilter->makeComposed(std::move(inputCF));
input = sk_ref_sp(input->getInput(0));
}
}
sk_sp<PrecompileImageFilter> filter = std::move(input);
if (colorFilter) {
filter = sk_make_sp<PrecompileColorFilterImageFilter>(std::move(colorFilter),
std::move(filter));
}
return filter;
}
//--------------------------------------------------------------------------------------------------
class PrecompileDisplacementMapImageFilter : public PrecompileImageFilter {
public:
PrecompileDisplacementMapImageFilter(SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
PaintOptions displacement;
// For displacement imagefilters we know we don't have alpha-only textures and don't need
// cubic filtering.
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha |
PrecompileImageShaderFlags::kExcludeCubic);
displacement.setShaders({ PrecompileShadersPriv::Displacement(imageShader, imageShader) });
displacement.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::DisplacementMap(
sk_sp<PrecompileImageFilter> input) {
return sk_make_sp<PrecompileDisplacementMapImageFilter>(SkSpan(&input, 1));
}
//--------------------------------------------------------------------------------------------------
class PrecompileLightingImageFilter : public PrecompileImageFilter {
public:
PrecompileLightingImageFilter(SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha |
PrecompileImageShaderFlags::kExcludeCubic);
PaintOptions lighting;
lighting.setShaders({ PrecompileShadersPriv::Lighting(std::move(imageShader)) });
lighting.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Lighting(
sk_sp<PrecompileImageFilter> input) {
return sk_make_sp<PrecompileLightingImageFilter>(SkSpan(&input, 1));
}
//--------------------------------------------------------------------------------------------------
class PrecompileMatrixConvolutionImageFilter : public PrecompileImageFilter {
public:
PrecompileMatrixConvolutionImageFilter(SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
PaintOptions matrixConv;
// For matrix convolution imagefilters we know we don't have alpha-only textures and don't
// need cubic filtering.
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha |
PrecompileImageShaderFlags::kExcludeCubic);
matrixConv.setShaders({ PrecompileShadersPriv::MatrixConvolution(imageShader) });
matrixConv.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::MatrixConvolution(
sk_sp<PrecompileImageFilter> input) {
return sk_make_sp<PrecompileMatrixConvolutionImageFilter>(SkSpan(&input, 1));
}
//--------------------------------------------------------------------------------------------------
class PrecompileMorphologyImageFilter : public PrecompileImageFilter {
public:
PrecompileMorphologyImageFilter(SkSpan<sk_sp<PrecompileImageFilter>> inputs)
: PrecompileImageFilter(std::move(inputs)) {
}
private:
void onCreatePipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
// For morphology imagefilters we know we don't have alpha-only textures and don't need
// cubic filtering.
sk_sp<PrecompileShader> imageShader = PrecompileShadersPriv::Image(
PrecompileImageShaderFlags::kExcludeAlpha | PrecompileImageShaderFlags::kExcludeCubic);
{
PaintOptions sparse;
static const SkBlendMode kBlendModes[] = { SkBlendMode::kSrc };
sparse.setShaders({ PrecompileShadersPriv::SparseMorphology(imageShader) });
sparse.setBlendModes(kBlendModes);
sparse.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
{
PaintOptions linear;
static const SkBlendMode kBlendModes[] = { SkBlendMode::kSrcOver };
linear.setShaders({ PrecompileShadersPriv::LinearMorphology(std::move(imageShader)) });
linear.setBlendModes(kBlendModes);
linear.priv().buildCombinations(keyContext,
gatherer,
DrawTypeFlags::kSimpleShape,
/* withPrimitiveBlender= */ false,
Coverage::kSingleChannel,
processCombination);
}
}
};
sk_sp<PrecompileImageFilter> PrecompileImageFilters::Morphology(
sk_sp<PrecompileImageFilter> input) {
return sk_make_sp<PrecompileMorphologyImageFilter>(SkSpan(&input, 1));
}
//--------------------------------------------------------------------------------------------------
// TODO(b/342413572): the analytic blurmasks are triggered off of the simple DrawType thus
// over-generate when a simple draw doesn't have a blur mask.
class PrecompileBlurMaskFilter : public PrecompileMaskFilter {
public:
PrecompileBlurMaskFilter() {}
private:
void createPipelines(
const KeyContext& keyContext,
PipelineDataGatherer* gatherer,
const PaintOptionsPriv::ProcessCombination& processCombination) const override {
create_blur_imagefilter_pipelines(keyContext, gatherer, processCombination);
}
};
sk_sp<PrecompileMaskFilter> PrecompileMaskFilters::Blur() {
return sk_make_sp<PrecompileBlurMaskFilter>();
}
//--------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------
class PrecompileBlendModeColorFilter : public PrecompileColorFilter {
public:
PrecompileBlendModeColorFilter() {}
private:
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination == 0);
// Here, kSrcOver and the white color are just a stand-ins for some later blend mode
// and color.
AddBlendModeColorFilter(keyContext, builder, gatherer,
SkBlendMode::kSrcOver, SK_PMColor4fWHITE);
}
};
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Blend() {
return sk_make_sp<PrecompileBlendModeColorFilter>();
}
//--------------------------------------------------------------------------------------------------
class PrecompileColorSpaceXformColorFilter : public PrecompileColorFilter {
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination == 0);
constexpr SkAlphaType kAlphaType = kPremul_SkAlphaType;
ColorSpaceTransformBlock::ColorSpaceTransformData csData(sk_srgb_singleton(), kAlphaType,
sk_srgb_singleton(), kAlphaType);
ColorSpaceTransformBlock::AddBlock(keyContext, builder, gatherer, csData);
}
};
sk_sp<PrecompileColorFilter> PrecompileColorFilters::LinearToSRGBGamma() {
return sk_make_sp<PrecompileColorSpaceXformColorFilter>();
}
sk_sp<PrecompileColorFilter> PrecompileColorFilters::SRGBToLinearGamma() {
return sk_make_sp<PrecompileColorSpaceXformColorFilter>();
}
sk_sp<PrecompileColorFilter> PrecompileColorFiltersPriv::ColorSpaceXform() {
return sk_make_sp<PrecompileColorSpaceXformColorFilter>();
}
//--------------------------------------------------------------------------------------------------
sk_sp<PrecompileColorFilter> PrecompileColorFilters::HighContrast() {
const SkRuntimeEffect* highContrastEffect =
GetKnownRuntimeEffect(SkKnownRuntimeEffects::StableKey::kHighContrast);
sk_sp<PrecompileColorFilter> cf = MakePrecompileColorFilter(sk_ref_sp(highContrastEffect));
if (!cf) {
return nullptr;
}
return PrecompileColorFiltersPriv::WithWorkingFormat({ std::move(cf) });
}
//--------------------------------------------------------------------------------------------------
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Luma() {
const SkRuntimeEffect* lumaEffect =
GetKnownRuntimeEffect(SkKnownRuntimeEffects::StableKey::kLuma);
return MakePrecompileColorFilter(sk_ref_sp(lumaEffect));
}
//--------------------------------------------------------------------------------------------------
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Overdraw() {
const SkRuntimeEffect* overdrawEffect =
GetKnownRuntimeEffect(SkKnownRuntimeEffects::StableKey::kOverdraw);
return MakePrecompileColorFilter(sk_ref_sp(overdrawEffect));
}
//--------------------------------------------------------------------------------------------------
class PrecompileComposeColorFilter : public PrecompileColorFilter {
public:
PrecompileComposeColorFilter(SkSpan<const sk_sp<PrecompileColorFilter>> outerOptions,
SkSpan<const sk_sp<PrecompileColorFilter>> innerOptions)
: fOuterOptions(outerOptions.begin(), outerOptions.end())
, fInnerOptions(innerOptions.begin(), innerOptions.end()) {
fNumOuterCombos = 0;
for (const auto& outerOption : fOuterOptions) {
fNumOuterCombos += outerOption ? outerOption->priv().numCombinations() : 1;
}
fNumInnerCombos = 0;
for (const auto& innerOption : fInnerOptions) {
fNumInnerCombos += innerOption ? innerOption->priv().numCombinations() : 1;
}
}
private:
int numChildCombinations() const override { return fNumOuterCombos * fNumInnerCombos; }
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination < this->numCombinations());
const int desiredOuterCombination = desiredCombination % fNumOuterCombos;
int remainingCombinations = desiredCombination / fNumOuterCombos;
const int desiredInnerCombination = remainingCombinations % fNumInnerCombos;
remainingCombinations /= fNumInnerCombos;
SkASSERT(!remainingCombinations);
sk_sp<PrecompileColorFilter> inner, outer;
int innerChildOptions, outerChildOptions;
std::tie(outer, outerChildOptions) = SelectOption<PrecompileColorFilter>(
fOuterOptions, desiredOuterCombination);
std::tie(inner, innerChildOptions) = SelectOption<PrecompileColorFilter>(
fInnerOptions, desiredInnerCombination);
if (!inner && !outer) {
// A "passthrough" color filter returns the input color as-is.
builder->addBlock(BuiltInCodeSnippetID::kPriorOutput);
} else if (!inner) {
outer->priv().addToKey(keyContext, builder, gatherer, outerChildOptions);
} else if (!outer) {
inner->priv().addToKey(keyContext, builder, gatherer, innerChildOptions);
} else {
Compose(keyContext, builder, gatherer,
/* addInnerToKey= */ [&]() -> void {
inner->priv().addToKey(keyContext, builder, gatherer, innerChildOptions);
},
/* addOuterToKey= */ [&]() -> void {
outer->priv().addToKey(keyContext, builder, gatherer, outerChildOptions);
});
}
}
std::vector<sk_sp<PrecompileColorFilter>> fOuterOptions;
std::vector<sk_sp<PrecompileColorFilter>> fInnerOptions;
int fNumOuterCombos;
int fNumInnerCombos;
};
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Compose(
SkSpan<const sk_sp<PrecompileColorFilter>> outerOptions,
SkSpan<const sk_sp<PrecompileColorFilter>> innerOptions) {
if (is_empty(outerOptions) && is_empty(innerOptions)) {
return nullptr;
}
return sk_make_sp<PrecompileComposeColorFilter>(outerOptions, innerOptions);
}
//--------------------------------------------------------------------------------------------------
class PrecompileGaussianColorFilter : public PrecompileColorFilter {
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination == 0);
builder->addBlock(BuiltInCodeSnippetID::kGaussianColorFilter);
}
};
sk_sp<PrecompileColorFilter> PrecompileColorFiltersPriv::Gaussian() {
return sk_make_sp<PrecompileGaussianColorFilter>();
}
//--------------------------------------------------------------------------------------------------
class PrecompileMatrixColorFilter : public PrecompileColorFilter {
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination == 0);
static constexpr float kIdentity[20] = { 1, 0, 0, 0, 0,
0, 1, 0, 0, 0,
0, 0, 1, 0, 0,
0, 0, 0, 1, 0 };
MatrixColorFilterBlock::MatrixColorFilterData matrixCFData(kIdentity, /* inHSLA= */ false);
MatrixColorFilterBlock::AddBlock(keyContext, builder, gatherer, matrixCFData);
}
};
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Matrix() {
return sk_make_sp<PrecompileMatrixColorFilter>();
}
sk_sp<PrecompileColorFilter> PrecompileColorFilters::HSLAMatrix() {
return sk_make_sp<PrecompileMatrixColorFilter>();
}
//--------------------------------------------------------------------------------------------------
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Lerp(
SkSpan<const sk_sp<PrecompileColorFilter>> dstOptions,
SkSpan<const sk_sp<PrecompileColorFilter>> srcOptions) {
if (dstOptions.empty() && srcOptions.empty()) {
return nullptr;
}
const SkRuntimeEffect* lerpEffect =
GetKnownRuntimeEffect(SkKnownRuntimeEffects::StableKey::kLerp);
// Since the RuntimeEffect Precompile objects behave differently we have to manually create
// all the combinations here (b/332690425).
skia_private::TArray<std::array<const PrecompileChildPtr, 2>> combos;
combos.reserve(dstOptions.size() * srcOptions.size());
for (const sk_sp<PrecompileColorFilter>& d : dstOptions) {
for (const sk_sp<PrecompileColorFilter>& s : srcOptions) {
combos.push_back({ d, s });
}
}
skia_private::TArray<SkSpan<const PrecompileChildPtr>> comboSpans;
comboSpans.reserve(combos.size());
for (const std::array<const PrecompileChildPtr, 2>& combo : combos) {
comboSpans.push_back({ combo });
}
return MakePrecompileColorFilter(sk_ref_sp(lerpEffect), comboSpans);
}
//--------------------------------------------------------------------------------------------------
class PrecompileTableColorFilter : public PrecompileColorFilter {
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination == 0);
TableColorFilterBlock::TableColorFilterData data(/* proxy= */ nullptr);
TableColorFilterBlock::AddBlock(keyContext, builder, gatherer, data);
}
};
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Table() {
return sk_make_sp<PrecompileTableColorFilter>();
}
//--------------------------------------------------------------------------------------------------
sk_sp<PrecompileColorFilter> PrecompileColorFilters::Lighting() {
return PrecompileColorFilters::Matrix();
}
//--------------------------------------------------------------------------------------------------
class PrecompileWithWorkingFormatColorFilter : public PrecompileColorFilter {
public:
PrecompileWithWorkingFormatColorFilter(SkSpan<const sk_sp<PrecompileColorFilter>> childOptions)
: fChildOptions(childOptions.begin(), childOptions.end()) {
fNumChildCombos = 0;
for (const auto& childOption : fChildOptions) {
fNumChildCombos += childOption->priv().numCombinations();
}
}
private:
int numChildCombinations() const override { return fNumChildCombos; }
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination < fNumChildCombos);
constexpr SkAlphaType kAlphaType = kPremul_SkAlphaType;
ColorSpaceTransformBlock::ColorSpaceTransformData csData(sk_srgb_singleton(), kAlphaType,
sk_srgb_singleton(), kAlphaType);
// Use two nested compose blocks to chain (dst->working), child, and (working->dst) together
// while appearing as one block to the parent node.
Compose(keyContext, builder, gatherer,
/* addInnerToKey= */ [&]() -> void {
// Inner compose
Compose(keyContext, builder, gatherer,
/* addInnerToKey= */ [&]() -> void {
// Innermost (inner of inner compose)
ColorSpaceTransformBlock::AddBlock(keyContext, builder, gatherer,
csData);
},
/* addOuterToKey= */ [&]() -> void {
// Middle (outer of inner compose)
AddToKey<PrecompileColorFilter>(keyContext, builder, gatherer,
fChildOptions, desiredCombination);
});
},
/* addOuterToKey= */ [&]() -> void {
// Outermost (outer of outer compose)
ColorSpaceTransformBlock::AddBlock(keyContext, builder, gatherer, csData);
});
}
std::vector<sk_sp<PrecompileColorFilter>> fChildOptions;
int fNumChildCombos;
};
sk_sp<PrecompileColorFilter> PrecompileColorFiltersPriv::WithWorkingFormat(
SkSpan<const sk_sp<PrecompileColorFilter>> childOptions) {
return sk_make_sp<PrecompileWithWorkingFormatColorFilter>(childOptions);
}
//--------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------
PrecompileChildPtr::PrecompileChildPtr(sk_sp<PrecompileShader> s) : fChild(std::move(s)) {}
PrecompileChildPtr::PrecompileChildPtr(sk_sp<PrecompileColorFilter> cf)
: fChild(std::move(cf)) {
}
PrecompileChildPtr::PrecompileChildPtr(sk_sp<PrecompileBlender> b) : fChild(std::move(b)) {}
PrecompileChildPtr::PrecompileChildPtr(sk_sp<PrecompileBase> child)
: fChild(std::move(child)) {
SkASSERT(precompilebase_is_valid_as_child(fChild.get()));
}
std::optional<SkRuntimeEffect::ChildType> PrecompileChildPtr::type() const {
if (fChild) {
switch (fChild->type()) {
case PrecompileBase::Type::kShader:
return SkRuntimeEffect::ChildType::kShader;
case PrecompileBase::Type::kColorFilter:
return SkRuntimeEffect::ChildType::kColorFilter;
case PrecompileBase::Type::kBlender:
return SkRuntimeEffect::ChildType::kBlender;
default:
break;
}
}
return std::nullopt;
}
PrecompileShader* PrecompileChildPtr::shader() const {
return (fChild && fChild->type() == PrecompileBase::Type::kShader)
? static_cast<PrecompileShader*>(fChild.get())
: nullptr;
}
PrecompileColorFilter* PrecompileChildPtr::colorFilter() const {
return (fChild && fChild->type() == PrecompileBase::Type::kColorFilter)
? static_cast<PrecompileColorFilter*>(fChild.get())
: nullptr;
}
PrecompileBlender* PrecompileChildPtr::blender() const {
return (fChild && fChild->type() == PrecompileBase::Type::kBlender)
? static_cast<PrecompileBlender*>(fChild.get())
: nullptr;
}
//--------------------------------------------------------------------------------------------------
namespace {
int num_options_in_set(const std::vector<PrecompileChildPtr>& optionSet) {
int numOptions = 1;
for (const PrecompileChildPtr& childOption : optionSet) {
// A missing child will fall back to a passthrough object
if (childOption.base()) {
numOptions *= childOption.base()->priv().numCombinations();
}
}
return numOptions;
}
// This is the precompile correlate to KeyHelper.cpp's add_children_to_key
void add_children_to_key(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination,
const std::vector<PrecompileChildPtr>& optionSet,
SkSpan<const SkRuntimeEffect::Child> childInfo) {
using ChildType = SkRuntimeEffect::ChildType;
SkASSERT(optionSet.size() == childInfo.size());
KeyContextWithScope childContext(keyContext, KeyContext::Scope::kRuntimeEffect);
int remainingCombinations = desiredCombination;
for (size_t index = 0; index < optionSet.size(); ++index) {
const PrecompileChildPtr& childOption = optionSet[index];
const int numChildCombos = childOption.base() ? childOption.base()->priv().numCombinations()
: 1;
const int curCombo = remainingCombinations % numChildCombos;
remainingCombinations /= numChildCombos;
std::optional<ChildType> type = childOption.type();
if (type == ChildType::kShader) {
childOption.shader()->priv().addToKey(childContext, builder, gatherer, curCombo);
} else if (type == ChildType::kColorFilter) {
childOption.colorFilter()->priv().addToKey(childContext, builder, gatherer, curCombo);
} else if (type == ChildType::kBlender) {
childOption.blender()->priv().addToKey(childContext, builder, gatherer, curCombo);
} else {
SkASSERT(curCombo == 0);
// We don't have a child effect. Substitute in a no-op effect.
switch (childInfo[index].type) {
case ChildType::kShader:
// A missing shader returns transparent black
SolidColorShaderBlock::AddBlock(childContext, builder, gatherer,
SK_PMColor4fTRANSPARENT);
break;
case ChildType::kColorFilter:
// A "passthrough" shader returns the input color as-is.
builder->addBlock(BuiltInCodeSnippetID::kPriorOutput);
break;
case ChildType::kBlender:
// A "passthrough" blender performs `blend_src_over(src, dest)`.
AddKnownModeBlend(childContext, builder, gatherer, SkBlendMode::kSrcOver);
break;
}
}
}
}
} // anonymous namespace
template<typename T>
class PrecompileRTEffect : public T {
public:
PrecompileRTEffect(sk_sp<SkRuntimeEffect> effect,
SkSpan<const PrecompileChildOptions> childOptions)
: fEffect(std::move(effect)) {
fChildOptions.reserve(childOptions.size());
for (PrecompileChildOptions c : childOptions) {
fChildOptions.push_back({ c.begin(), c.end() });
}
}
private:
int numChildCombinations() const override {
int numOptions = 0;
for (const std::vector<PrecompileChildPtr>& optionSet : fChildOptions) {
numOptions += num_options_in_set(optionSet);
}
return numOptions ? numOptions : 1;
}
void addToKey(const KeyContext& keyContext,
PaintParamsKeyBuilder* builder,
PipelineDataGatherer* gatherer,
int desiredCombination) const override {
SkASSERT(desiredCombination < this->numCombinations());
SkSpan<const SkRuntimeEffect::Child> childInfo = fEffect->children();
RuntimeEffectBlock::BeginBlock(keyContext, builder, gatherer, { fEffect });
for (const std::vector<PrecompileChildPtr>& optionSet : fChildOptions) {
int numOptionsInSet = num_options_in_set(optionSet);
if (desiredCombination < numOptionsInSet) {
add_children_to_key(keyContext, builder, gatherer, desiredCombination, optionSet,
childInfo);
break;
}
desiredCombination -= numOptionsInSet;
}
builder->endBlock();
}
sk_sp<SkRuntimeEffect> fEffect;
std::vector<std::vector<PrecompileChildPtr>> fChildOptions;
};
sk_sp<PrecompileShader> MakePrecompileShader(
sk_sp<SkRuntimeEffect> effect,
SkSpan<const PrecompileChildOptions> childOptions) {
// TODO: check that 'effect' has the kAllowShader_Flag bit set and:
// for each entry in childOptions:
// all the SkPrecompileChildPtrs have the same type as the corresponding child in the effect
return sk_make_sp<PrecompileRTEffect<PrecompileShader>>(std::move(effect), childOptions);
}
sk_sp<PrecompileColorFilter> MakePrecompileColorFilter(
sk_sp<SkRuntimeEffect> effect,
SkSpan<const PrecompileChildOptions> childOptions) {
// TODO: check that 'effect' has the kAllowColorFilter_Flag bit set and:
// for each entry in childOptions:
// all the SkPrecompileChildPtrs have the same type as the corresponding child in the effect
return sk_make_sp<PrecompileRTEffect<PrecompileColorFilter>>(std::move(effect), childOptions);
}
sk_sp<PrecompileBlender> MakePrecompileBlender(
sk_sp<SkRuntimeEffect> effect,
SkSpan<const PrecompileChildOptions> childOptions) {
// TODO: check that 'effect' has the kAllowBlender_Flag bit set and:
// for each entry in childOptions:
// all the SkPrecompileChildPtrs have the same type as the corresponding child in the effect
return sk_make_sp<PrecompileRTEffect<PrecompileBlender>>(std::move(effect), childOptions);
}
} // namespace skgpu::graphite
//--------------------------------------------------------------------------------------------------