| /* |
| * 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/core/SkShaderCodeDictionary.h" |
| |
| #include "include/private/SkSLString.h" |
| #include "src/core/SkOpts.h" |
| #include "src/sksl/SkSLUtil.h" |
| |
| namespace { |
| |
| std::string get_mangled_local_var_name(const char* baseName, int manglingSuffix) { |
| return std::string(baseName) + "_" + std::to_string(manglingSuffix); |
| } |
| |
| void add_indent(std::string* result, int indent) { |
| result->append(4*indent, ' '); |
| } |
| |
| #if SK_SUPPORT_GPU && defined(SK_GRAPHITE_ENABLED) && defined(SK_METAL) |
| std::string generate_default_before_children_glue_code(int entryIndex, |
| const SkPaintParamsKey::BlockReader& reader, |
| const std::string& parentPreLocalName, |
| int indent) { |
| std::string result; |
| |
| if (reader.entry()->needsLocalCoords()) { |
| // Every snippet that requests local coordinates must have a preLocalMatrix as its first |
| // uniform |
| SkASSERT(reader.entry()->fUniforms.size() >= 1); |
| SkASSERT(reader.entry()->fUniforms[0].type() == SkSLType::kFloat4x4); |
| |
| std::string localMatrixUniformName = reader.entry()->getMangledUniformName(0, entryIndex); |
| |
| std::string preLocalMatrixVarName = get_mangled_local_var_name("preLocal", entryIndex); |
| |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, |
| "float4x4 %s = %s * %s;\n", |
| preLocalMatrixVarName.c_str(), |
| parentPreLocalName.c_str(), |
| localMatrixUniformName.c_str()); |
| } |
| |
| return result; |
| } |
| #endif |
| |
| } // anonymous namespace |
| |
| |
| std::string SkShaderSnippet::getMangledUniformName(int uniformIndex, int mangleId) const { |
| std::string result; |
| result = fUniforms[uniformIndex].name() + std::string("_") + std::to_string(mangleId); |
| return result; |
| } |
| |
| // TODO: SkShaderInfo::toSkSL needs to work outside of both just graphite and metal. To do |
| // so we'll need to switch over to using SkSL's uniform capabilities. |
| #if SK_SUPPORT_GPU && defined(SK_GRAPHITE_ENABLED) && defined(SK_METAL) |
| |
| #include <set> |
| |
| // TODO: switch this over to using SkSL's uniform system |
| namespace skgpu::graphite { |
| std::string GetMtlUniforms(int bufferID, |
| const char* name, |
| const std::vector<SkPaintParamsKey::BlockReader>&, |
| bool needsDev2Local); |
| std::string GetMtlTexturesAndSamplers(const std::vector<SkPaintParamsKey::BlockReader>&, |
| int* binding); |
| } // namespace skgpu::graphite |
| |
| // Emit the glue code needed to invoke a single static helper isolated w/in its own scope. |
| // The structure of this will be: |
| // |
| // half4 outColor%d; |
| // { |
| // half4 child-outColor%d; // for each child |
| // { |
| // /* emitted snippet sksl assigns to child-outColor%d */ |
| // } |
| // |
| // /* emitted snippet sksl assigns to outColor%d - taking a vector of child var names */ |
| // } |
| // Where the %d is filled in with 'entryIndex'. |
| std::string SkShaderInfo::emitGlueCodeForEntry(int* entryIndex, |
| const std::string& priorStageOutputName, |
| const std::string& parentPreLocalName, |
| std::string* result, |
| int indent) const { |
| const SkPaintParamsKey::BlockReader& reader = fBlockReaders[*entryIndex]; |
| int curEntryIndex = *entryIndex; |
| |
| std::string scopeOutputVar = get_mangled_local_var_name("outColor", curEntryIndex); |
| |
| add_indent(result, indent); |
| SkSL::String::appendf(result, |
| "half4 %s; // output of %s\n", |
| scopeOutputVar.c_str(), |
| reader.entry()->fName); |
| add_indent(result, indent); |
| *result += "{\n"; |
| |
| *result += generate_default_before_children_glue_code(curEntryIndex, reader, |
| parentPreLocalName, indent+1); |
| |
| // TODO: this could be returned by generate_default_before_children_glue_code |
| std::string currentPreLocalName; |
| if (reader.entry()->needsLocalCoords()) { |
| currentPreLocalName = get_mangled_local_var_name("preLocal", curEntryIndex); |
| } else { |
| currentPreLocalName = parentPreLocalName; |
| } |
| |
| // Although the children appear after the parent in the shader info they are emitted |
| // before the parent |
| std::vector<std::string> childOutputVarNames; |
| for (int j = 0; j < reader.numChildren(); ++j) { |
| *entryIndex += 1; |
| std::string childOutputVar = this->emitGlueCodeForEntry(entryIndex, |
| priorStageOutputName, |
| currentPreLocalName, |
| result, indent+1); |
| childOutputVarNames.push_back(childOutputVar); |
| } |
| |
| *result += (reader.entry()->fGlueCodeGenerator)(scopeOutputVar, curEntryIndex, reader, |
| priorStageOutputName, |
| childOutputVarNames, indent+1); |
| add_indent(result, indent); |
| *result += "}\n"; |
| |
| return scopeOutputVar; |
| } |
| |
| // The current, incomplete, model for shader construction is: |
| // - Static code snippets (which can have an arbitrary signature) live in the Graphite |
| // pre-compiled module, which is located at `src/sksl/sksl_graphite_frag.sksl`. |
| // - Glue code is generated in a `main` method which calls these static code snippets. |
| // The glue code is responsible for: |
| // 1) gathering the correct (mangled) uniforms |
| // 2) passing the uniforms and any other parameters to the helper method |
| // - The result of the final code snippet is then copied into "sk_FragColor". |
| // Note: each entry's 'fStaticFunctionName' field is expected to match the name of a function |
| // in the Graphite pre-compiled module. |
| std::string SkShaderInfo::toSkSL() const { |
| // The uniforms are mangled by having their index in 'fEntries' as a suffix (i.e., "_%d") |
| std::string result = skgpu::graphite::GetMtlUniforms(2, "FS", fBlockReaders, |
| this->needsLocalCoords()); |
| |
| int binding = 0; |
| result += skgpu::graphite::GetMtlTexturesAndSamplers(fBlockReaders, &binding); |
| result += "layout(location = 0, index = 0) out half4 sk_FragColor;\n"; |
| result += "void main() {\n"; |
| |
| if (this->needsLocalCoords()) { |
| result += "const float4x4 initialPreLocal = float4x4(1);\n"; |
| } |
| |
| std::string parentPreLocal = "initialPreLocal"; |
| std::string lastOutputVar = "initialColor"; |
| |
| // TODO: what is the correct initial color to feed in? |
| add_indent(&result, 1); |
| SkSL::String::appendf(&result, " half4 %s = half4(0.0);", lastOutputVar.c_str()); |
| |
| for (int entryIndex = 0; entryIndex < (int) fBlockReaders.size(); ++entryIndex) { |
| lastOutputVar = this->emitGlueCodeForEntry(&entryIndex, lastOutputVar, parentPreLocal, |
| &result, 1); |
| } |
| |
| SkSL::String::appendf(&result, " sk_FragColor = %s;\n", lastOutputVar.c_str()); |
| result += "}\n"; |
| |
| return result; |
| } |
| #endif |
| |
| SkShaderCodeDictionary::Entry* SkShaderCodeDictionary::makeEntry( |
| const SkPaintParamsKey& key |
| #ifdef SK_GRAPHITE_ENABLED |
| , const SkPipelineDataGatherer::BlendInfo& blendInfo |
| #endif |
| ) { |
| uint8_t* newKeyData = fArena.makeArray<uint8_t>(key.sizeInBytes()); |
| memcpy(newKeyData, key.data(), key.sizeInBytes()); |
| |
| SkSpan<const uint8_t> newKeyAsSpan = SkMakeSpan(newKeyData, key.sizeInBytes()); |
| #ifdef SK_GRAPHITE_ENABLED |
| return fArena.make([&](void *ptr) { return new(ptr) Entry(newKeyAsSpan, blendInfo); }); |
| #else |
| return fArena.make([&](void *ptr) { return new(ptr) Entry(newKeyAsSpan); }); |
| #endif |
| } |
| |
| size_t SkShaderCodeDictionary::Hash::operator()(const SkPaintParamsKey* key) const { |
| return SkOpts::hash_fn(key->data(), key->sizeInBytes(), 0); |
| } |
| |
| const SkShaderCodeDictionary::Entry* SkShaderCodeDictionary::findOrCreate( |
| const SkPaintParamsKey& key |
| #ifdef SK_GRAPHITE_ENABLED |
| , const SkPipelineDataGatherer::BlendInfo& blendInfo |
| #endif |
| ) { |
| SkAutoSpinlock lock{fSpinLock}; |
| |
| auto iter = fHash.find(&key); |
| if (iter != fHash.end()) { |
| SkASSERT(fEntryVector[iter->second->uniqueID().asUInt()] == iter->second); |
| return iter->second; |
| } |
| |
| #ifdef SK_GRAPHITE_ENABLED |
| Entry* newEntry = this->makeEntry(key, blendInfo); |
| #else |
| Entry* newEntry = this->makeEntry(key); |
| #endif |
| newEntry->setUniqueID(fEntryVector.size()); |
| fHash.insert(std::make_pair(&newEntry->paintParamsKey(), newEntry)); |
| fEntryVector.push_back(newEntry); |
| |
| return newEntry; |
| } |
| |
| const SkShaderCodeDictionary::Entry* SkShaderCodeDictionary::lookup( |
| SkUniquePaintParamsID codeID) const { |
| |
| if (!codeID.isValid()) { |
| return nullptr; |
| } |
| |
| SkAutoSpinlock lock{fSpinLock}; |
| |
| SkASSERT(codeID.asUInt() < fEntryVector.size()); |
| |
| return fEntryVector[codeID.asUInt()]; |
| } |
| |
| SkSpan<const SkUniform> SkShaderCodeDictionary::getUniforms(SkBuiltInCodeSnippetID id) const { |
| return fBuiltInCodeSnippets[(int) id].fUniforms; |
| } |
| |
| SkSpan<const SkPaintParamsKey::DataPayloadField> SkShaderCodeDictionary::dataPayloadExpectations( |
| int codeSnippetID) const { |
| // All callers of this entry point should already have ensured that 'codeSnippetID' is valid |
| return this->getEntry(codeSnippetID)->fDataPayloadExpectations; |
| } |
| |
| const SkShaderSnippet* SkShaderCodeDictionary::getEntry(int codeSnippetID) const { |
| SkASSERT(codeSnippetID >= 0 && codeSnippetID <= this->maxCodeSnippetID()); |
| |
| if (codeSnippetID < kBuiltInCodeSnippetIDCount) { |
| return &fBuiltInCodeSnippets[codeSnippetID]; |
| } |
| |
| int userDefinedCodeSnippetID = codeSnippetID - kBuiltInCodeSnippetIDCount; |
| if (userDefinedCodeSnippetID < SkTo<int>(fUserDefinedCodeSnippets.size())) { |
| return fUserDefinedCodeSnippets[userDefinedCodeSnippetID].get(); |
| } |
| |
| return nullptr; |
| } |
| |
| void SkShaderCodeDictionary::getShaderInfo(SkUniquePaintParamsID uniqueID, SkShaderInfo* info) { |
| auto entry = this->lookup(uniqueID); |
| |
| entry->paintParamsKey().toShaderInfo(this, info); |
| |
| #ifdef SK_GRAPHITE_ENABLED |
| info->setBlendInfo(entry->blendInfo()); |
| #endif |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| namespace { |
| |
| using DataPayloadField = SkPaintParamsKey::DataPayloadField; |
| |
| // The default glue code just calls a helper function with the signature: |
| // half4 fStaticFunctionName(/* all uniforms as parameters */, |
| // /* all child output variable names as parameters */); |
| // and stores the result in a variable named "resultName". |
| std::string GenerateDefaultGlueCode(const std::string& resultName, |
| int entryIndex, |
| const SkPaintParamsKey::BlockReader& reader, |
| const std::string& priorStageOutputName, |
| const std::vector<std::string>& childOutputVarNames, |
| int indent) { |
| const SkShaderSnippet* entry = reader.entry(); |
| |
| SkASSERT((int)childOutputVarNames.size() == entry->numExpectedChildren()); |
| |
| if (entry->needsLocalCoords()) { |
| // Every snippet that requests local coordinates must have a localMatrix as its first |
| // uniform |
| SkASSERT(reader.entry()->fUniforms.size() >= 1); |
| SkASSERT(reader.entry()->fUniforms[0].type() == SkSLType::kFloat4x4); |
| } |
| |
| std::string result; |
| |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, |
| "%s = %s(", |
| resultName.c_str(), |
| entry->fStaticFunctionName); |
| for (size_t i = 0; i < entry->fUniforms.size(); ++i) { |
| if (i == 0 && reader.entry()->needsLocalCoords()) { |
| std::string preLocalMatrixVarName = get_mangled_local_var_name("preLocal", |
| entryIndex); |
| result += preLocalMatrixVarName; |
| result += " * dev2LocalUni"; |
| } else { |
| result += entry->getMangledUniformName(i, entryIndex); |
| } |
| if (i+1 < entry->fUniforms.size() + childOutputVarNames.size()) { |
| result += ", "; |
| } |
| } |
| for (size_t i = 0; i < childOutputVarNames.size(); ++i) { |
| result += childOutputVarNames[i].c_str(); |
| if (i+1 < childOutputVarNames.size()) { |
| result += ", "; |
| } |
| } |
| result += ");\n"; |
| |
| return result; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kFourStopGradient = 4; |
| |
| static constexpr int kNumLinearGradientUniforms = 5; |
| static constexpr SkUniform kLinearGradientUniforms[kNumLinearGradientUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| { "colors", SkSLType::kFloat4, kFourStopGradient }, |
| { "offsets", SkSLType::kFloat, kFourStopGradient }, |
| { "point0", SkSLType::kFloat2 }, |
| { "point1", SkSLType::kFloat2 }, |
| }; |
| |
| static constexpr int kNumRadialGradientUniforms = 6; |
| static constexpr SkUniform kRadialGradientUniforms[kNumRadialGradientUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| { "colors", SkSLType::kFloat4, kFourStopGradient }, |
| { "offsets", SkSLType::kFloat, kFourStopGradient }, |
| { "center", SkSLType::kFloat2 }, |
| { "radius", SkSLType::kFloat }, |
| { "padding", SkSLType::kFloat } // TODO: add automatic uniform padding |
| }; |
| |
| static constexpr int kNumSweepGradientUniforms = 6; |
| static constexpr SkUniform kSweepGradientUniforms[kNumSweepGradientUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| { "colors", SkSLType::kFloat4, kFourStopGradient }, |
| { "offsets", SkSLType::kFloat, kFourStopGradient }, |
| { "center", SkSLType::kFloat2 }, |
| { "bias", SkSLType::kFloat }, |
| { "scale", SkSLType::kFloat } |
| }; |
| |
| static constexpr int kNumConicalGradientUniforms = 8; |
| static constexpr SkUniform kConicalGradientUniforms[kNumConicalGradientUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| { "colors", SkSLType::kFloat4, kFourStopGradient }, |
| { "offsets", SkSLType::kFloat, kFourStopGradient }, |
| { "point0", SkSLType::kFloat2 }, |
| { "point1", SkSLType::kFloat2 }, |
| { "radius0", SkSLType::kFloat }, |
| { "radius1", SkSLType::kFloat }, |
| { "padding", SkSLType::kFloat2 } // TODO: add automatic uniform padding |
| }; |
| |
| static constexpr char kLinearGradient4Name[] = "sk_linear_grad_4_shader"; |
| static constexpr char kRadialGradient4Name[] = "sk_radial_grad_4_shader"; |
| static constexpr char kSweepGradient4Name[] = "sk_sweep_grad_4_shader"; |
| static constexpr char kConicalGradient4Name[] = "sk_conical_grad_4_shader"; |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kNumSolidShaderUniforms = 1; |
| static constexpr SkUniform kSolidShaderUniforms[kNumSolidShaderUniforms] = { |
| { "color", SkSLType::kFloat4 } |
| }; |
| |
| static constexpr char kSolidShaderName[] = "sk_solid_shader"; |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kNumLocalMatrixShaderUniforms = 1; |
| static constexpr SkUniform kLocalMatrixShaderUniforms[kNumLocalMatrixShaderUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| }; |
| |
| static constexpr int kNumLocalMatrixShaderChildren = 1; |
| |
| static constexpr char kLocalMatrixShaderName[] = "sk_local_matrix_shader"; |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kNumImageShaderUniforms = 6; |
| static constexpr SkUniform kImageShaderUniforms[kNumImageShaderUniforms] = { |
| { "localMatrix", SkSLType::kFloat4x4 }, |
| { "subset", SkSLType::kFloat4 }, |
| { "tilemodeX", SkSLType::kInt }, |
| { "tilemodeY", SkSLType::kInt }, |
| { "imgWidth", SkSLType::kInt }, |
| { "imgHeight", SkSLType::kInt }, |
| }; |
| |
| static constexpr int kNumImageShaderTexturesAndSamplers = 1; |
| static constexpr SkTextureAndSampler kISTexturesAndSamplers[kNumImageShaderTexturesAndSamplers] = { |
| {"sampler"}, |
| }; |
| |
| static_assert(0 == static_cast<int>(SkTileMode::kClamp), "ImageShader code depends on SkTileMode"); |
| static_assert(1 == static_cast<int>(SkTileMode::kRepeat), "ImageShader code depends on SkTileMode"); |
| static_assert(2 == static_cast<int>(SkTileMode::kMirror), "ImageShader code depends on SkTileMode"); |
| static_assert(3 == static_cast<int>(SkTileMode::kDecal), "ImageShader code depends on SkTileMode"); |
| |
| static constexpr char kImageShaderName[] = "sk_compute_coords"; |
| |
| // This is _not_ what we want to do. |
| // Ideally the "compute_coords" code snippet could just take texture and |
| // sampler references and do everything. That is going to take more time to figure out though so, |
| // for the sake of expediency, we're generating custom code to do the sampling. |
| std::string GenerateImageShaderGlueCode(const std::string& resultName, |
| int entryIndex, |
| const SkPaintParamsKey::BlockReader& reader, |
| const std::string& priorStageOutputName, |
| const std::vector<std::string>& childNames, |
| int indent) { |
| SkASSERT(childNames.empty()); |
| |
| std::string samplerVarName = std::string("sampler_") + std::to_string(entryIndex) + "_0"; |
| std::string preLocalMatrixVarName = get_mangled_local_var_name("preLocal", entryIndex); |
| |
| // Uniform slot 0 is being used for the localMatrix but is handled in |
| // generate_default_before_children_glue_code. |
| std::string subsetName = reader.entry()->getMangledUniformName(1, entryIndex); |
| std::string tmXName = reader.entry()->getMangledUniformName(2, entryIndex); |
| std::string tmYName = reader.entry()->getMangledUniformName(3, entryIndex); |
| std::string imgWidthName = reader.entry()->getMangledUniformName(4, entryIndex); |
| std::string imgHeightName = reader.entry()->getMangledUniformName(5, entryIndex); |
| |
| std::string result; |
| |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, |
| "float2 coords = %s(%s * dev2LocalUni, %s, %s, %s, %s, %s);", |
| reader.entry()->fStaticFunctionName, |
| preLocalMatrixVarName.c_str(), |
| subsetName.c_str(), |
| tmXName.c_str(), |
| tmYName.c_str(), |
| imgWidthName.c_str(), |
| imgHeightName.c_str()); |
| |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, |
| "%s = sample(%s, coords);\n", |
| resultName.c_str(), |
| samplerVarName.c_str()); |
| |
| return result; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kNumBlendShaderUniforms = 4; |
| static constexpr SkUniform kBlendShaderUniforms[kNumBlendShaderUniforms] = { |
| { "blendMode", SkSLType::kInt }, |
| { "padding1", SkSLType::kInt }, // TODO: add automatic uniform padding |
| { "padding2", SkSLType::kInt }, |
| { "padding3", SkSLType::kInt }, |
| }; |
| |
| static constexpr int kNumBlendShaderChildren = 2; |
| |
| static constexpr char kBlendShaderName[] = "sk_blend_shader"; |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr char kErrorName[] = "sk_error"; |
| |
| //-------------------------------------------------------------------------------------------------- |
| // This method generates the glue code for the case where the SkBlendMode-based blending is |
| // handled with fixed function blending. |
| std::string GenerateFixedFunctionBlenderGlueCode(const std::string& resultName, |
| int entryIndex, |
| const SkPaintParamsKey::BlockReader& reader, |
| const std::string& priorStageOutputName, |
| const std::vector<std::string>& childNames, |
| int indent) { |
| SkASSERT(childNames.empty()); |
| SkASSERT(reader.entry()->fUniforms.empty()); |
| SkASSERT(reader.numDataPayloadFields() == 0); |
| |
| // The actual blending is set up via the fixed function pipeline so we don't actually |
| // need to access the blend mode in the glue code. |
| |
| std::string result; |
| add_indent(&result, indent); |
| result += "// Fixed-function blending\n"; |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, "%s = %s;", resultName.c_str(), priorStageOutputName.c_str()); |
| |
| return result; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| static constexpr int kNumShaderBasedBlenderUniforms = 4; |
| static constexpr SkUniform kShaderBasedBlenderUniforms[kNumShaderBasedBlenderUniforms] = { |
| { "blendMode", SkSLType::kInt }, |
| { "padding1", SkSLType::kInt }, // TODO: add automatic uniform padding |
| { "padding2", SkSLType::kInt }, |
| { "padding3", SkSLType::kInt }, |
| }; |
| |
| static constexpr char kBlendHelperName[] = "sk_blend"; |
| |
| // This method generates the glue code for the case where the SkBlendMode-based blending must occur |
| // in the shader (i.e., fixed function blending isn't possible). |
| // It exists as custom glue code so that we can deal with the dest reads. If that can be |
| // standardized (e.g., via a snippets requirement flag) this could be removed. |
| std::string GenerateShaderBasedBlenderGlueCode(const std::string& resultName, |
| int entryIndex, |
| const SkPaintParamsKey::BlockReader& reader, |
| const std::string& priorStageOutputName, |
| const std::vector<std::string>& childNames, |
| int indent) { |
| SkASSERT(childNames.empty()); |
| SkASSERT(reader.entry()->fUniforms.size() == 4); // actual blend uniform + 3 padding int |
| SkASSERT(reader.numDataPayloadFields() == 0); |
| |
| std::string uniformName = reader.entry()->getMangledUniformName(0, entryIndex); |
| |
| std::string result; |
| |
| add_indent(&result, indent); |
| result += "// Shader-based blending\n"; |
| |
| // TODO: emit code to perform dest read here |
| add_indent(&result, indent); |
| result += "half4 dummyDst = half4(1.0, 1.0, 1.0, 1.0);\n"; |
| |
| add_indent(&result, indent); |
| SkSL::String::appendf(&result, "%s = %s(%s, %s, dummyDst);", |
| resultName.c_str(), |
| reader.entry()->fStaticFunctionName, |
| uniformName.c_str(), |
| priorStageOutputName.c_str()); |
| |
| return result; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| |
| } // anonymous namespace |
| |
| static constexpr int kNoChildren = 0; |
| |
| int SkShaderCodeDictionary::addUserDefinedSnippet( |
| const char* name, |
| SkSpan<const SkPaintParamsKey::DataPayloadField> dataPayloadExpectations) { |
| |
| std::unique_ptr<SkShaderSnippet> entry(new SkShaderSnippet("UserDefined", |
| {}, // no uniforms |
| SnippetRequirementFlags::kNone, |
| {}, // no samplers |
| name, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| dataPayloadExpectations)); |
| |
| // TODO: the memory for user-defined entries could go in the dictionary's arena but that |
| // would have to be a thread safe allocation since the arena also stores entries for |
| // 'fHash' and 'fEntryVector' |
| fUserDefinedCodeSnippets.push_back(std::move(entry)); |
| |
| return kBuiltInCodeSnippetIDCount + fUserDefinedCodeSnippets.size() - 1; |
| } |
| |
| SkShaderCodeDictionary::SkShaderCodeDictionary() { |
| // The 0th index is reserved as invalid |
| fEntryVector.push_back(nullptr); |
| |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kDepthStencilOnlyDraw] = { |
| "DepthStencil", |
| { }, // no uniforms |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| kErrorName, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| {} |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kError] = { |
| "Error", |
| { }, // no uniforms |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| kErrorName, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kSolidColorShader] = { |
| "SolidColor", |
| SkMakeSpan(kSolidShaderUniforms, kNumSolidShaderUniforms), |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| kSolidShaderName, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kLinearGradientShader] = { |
| "LinearGradient4", |
| SkMakeSpan(kLinearGradientUniforms, kNumLinearGradientUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| { }, // no samplers |
| kLinearGradient4Name, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kRadialGradientShader] = { |
| "RadialGradient4", |
| SkMakeSpan(kRadialGradientUniforms, kNumRadialGradientUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| { }, // no samplers |
| kRadialGradient4Name, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kSweepGradientShader] = { |
| "SweepGradient4", |
| SkMakeSpan(kSweepGradientUniforms, kNumSweepGradientUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| { }, // no samplers |
| kSweepGradient4Name, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kConicalGradientShader] = { |
| "ConicalGradient4", |
| SkMakeSpan(kConicalGradientUniforms, kNumConicalGradientUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| { }, // no samplers |
| kConicalGradient4Name, |
| GenerateDefaultGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kLocalMatrixShader] = { |
| "LocalMatrixShader", |
| SkMakeSpan(kLocalMatrixShaderUniforms, kNumLocalMatrixShaderUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| { }, // no samplers |
| kLocalMatrixShaderName, |
| GenerateDefaultGlueCode, |
| kNumLocalMatrixShaderChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kImageShader] = { |
| "ImageShader", |
| SkMakeSpan(kImageShaderUniforms, kNumImageShaderUniforms), |
| SnippetRequirementFlags::kLocalCoords, |
| SkMakeSpan(kISTexturesAndSamplers, kNumImageShaderTexturesAndSamplers), |
| kImageShaderName, |
| GenerateImageShaderGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kBlendShader] = { |
| "BlendShader", |
| { kBlendShaderUniforms, kNumBlendShaderUniforms }, |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| kBlendShaderName, |
| GenerateDefaultGlueCode, |
| kNumBlendShaderChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kFixedFunctionBlender] = { |
| "FixedFunctionBlender", |
| { }, // no uniforms |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| "FF-blending", // fixed function blending doesn't use static SkSL |
| GenerateFixedFunctionBlenderGlueCode, |
| kNoChildren, |
| { } |
| }; |
| fBuiltInCodeSnippets[(int) SkBuiltInCodeSnippetID::kShaderBasedBlender] = { |
| "ShaderBasedBlender", |
| { kShaderBasedBlenderUniforms, kNumShaderBasedBlenderUniforms }, |
| SnippetRequirementFlags::kNone, |
| { }, // no samplers |
| kBlendHelperName, |
| GenerateShaderBasedBlenderGlueCode, |
| kNoChildren, |
| { } |
| }; |
| } |
