| /* |
| * Copyright 2020 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/sksl/DSLVar.h" |
| |
| #include "include/sksl/DSLModifiers.h" |
| #include "include/sksl/DSLType.h" |
| #include "src/sksl/SkSLCompiler.h" |
| #include "src/sksl/SkSLUtil.h" |
| #include "src/sksl/dsl/priv/DSLWriter.h" |
| #include "src/sksl/ir/SkSLBinaryExpression.h" |
| #include "src/sksl/ir/SkSLSymbolTable.h" |
| #include "src/sksl/ir/SkSLVariable.h" |
| #include "src/sksl/ir/SkSLVariableReference.h" |
| |
| namespace SkSL { |
| |
| namespace dsl { |
| |
| DSLVarBase::DSLVarBase(DSLType type, skstd::string_view name, DSLExpression initialValue) |
| : DSLVarBase(DSLModifiers(), std::move(type), name, std::move(initialValue)) {} |
| |
| DSLVarBase::DSLVarBase(DSLType type, DSLExpression initialValue) |
| : DSLVarBase(type, "var", std::move(initialValue)) {} |
| |
| DSLVarBase::DSLVarBase(const DSLModifiers& modifiers, DSLType type, DSLExpression initialValue) |
| : DSLVarBase(modifiers, type, "var", std::move(initialValue)) {} |
| |
| DSLVarBase::DSLVarBase(const DSLModifiers& modifiers, DSLType type, skstd::string_view name, |
| DSLExpression initialValue) |
| : fModifiers(std::move(modifiers)) |
| , fType(std::move(type)) |
| , fRawName(name) |
| , fName(fType.skslType().isOpaque() ? name : DSLWriter::Name(name)) |
| , fInitialValue(std::move(initialValue)) |
| , fDeclared(DSLWriter::MarkVarsDeclared()) { |
| if (fModifiers.fModifiers.fFlags & Modifiers::kUniform_Flag) { |
| #if SK_SUPPORT_GPU && !defined(SKSL_STANDALONE) |
| if (DSLWriter::InFragmentProcessor()) { |
| const SkSL::Type& skslType = type.skslType(); |
| GrSLType grslType; |
| int count; |
| if (skslType.isArray()) { |
| SkAssertResult(SkSL::type_to_grsltype(DSLWriter::Context(), |
| skslType.componentType(), |
| &grslType)); |
| count = skslType.columns(); |
| SkASSERT(count > 0); |
| } else { |
| SkAssertResult(SkSL::type_to_grsltype(DSLWriter::Context(), skslType, |
| &grslType)); |
| count = 0; |
| } |
| const char* uniformName; |
| SkASSERT(DSLWriter::CurrentEmitArgs()); |
| fUniformHandle = DSLWriter::CurrentEmitArgs()->fUniformHandler->addUniformArray( |
| &DSLWriter::CurrentEmitArgs()->fFp, |
| kFragment_GrShaderFlag, |
| grslType, |
| String(this->name()).c_str(), |
| count, |
| &uniformName).toIndex(); |
| fName = uniformName; |
| } |
| #endif // SK_SUPPORT_GPU && !defined(SKSL_STANDALONE) |
| } |
| } |
| |
| DSLVarBase::~DSLVarBase() { |
| if (fDeclaration && !fDeclared) { |
| DSLWriter::ReportError(String::printf("variable '%.*s' was destroyed without being " |
| "declared", |
| (int)fRawName.length(), |
| fRawName.data()).c_str()); |
| } |
| } |
| |
| void DSLVarBase::swap(DSLVarBase& other) { |
| SkASSERT(this->storage() == other.storage()); |
| std::swap(fModifiers, other.fModifiers); |
| std::swap(fType, other.fType); |
| std::swap(fUniformHandle, other.fUniformHandle); |
| std::swap(fDeclaration, other.fDeclaration); |
| std::swap(fVar, other.fVar); |
| std::swap(fRawName, other.fRawName); |
| std::swap(fName, other.fName); |
| std::swap(fInitialValue.fExpression, other.fInitialValue.fExpression); |
| std::swap(fDeclared, other.fDeclared); |
| } |
| |
| void DSLVar::swap(DSLVar& other) { |
| INHERITED::swap(other); |
| } |
| |
| VariableStorage DSLVar::storage() const { |
| return VariableStorage::kLocal; |
| } |
| |
| DSLGlobalVar::DSLGlobalVar(const char* name) |
| : INHERITED(kVoid_Type, name, DSLExpression()) { |
| fName = name; |
| DSLWriter::MarkDeclared(*this); |
| #if SK_SUPPORT_GPU && !defined(SKSL_STANDALONE) |
| if (!strcmp(name, "sk_SampleCoord")) { |
| fName = DSLWriter::CurrentEmitArgs()->fSampleCoord; |
| // The actual sk_SampleCoord variable hasn't been created by GrGLSLFPFragmentBuilder yet, so |
| // if we attempt to look it up in the symbol table we'll get null. As we are currently |
| // converting all DSL code into strings rather than nodes, all we really need is a |
| // correctly-named variable with the right type, so we just create a placeholder for it. |
| // TODO(skia/11330): we'll need to fix this when switching over to nodes. |
| const SkSL::Modifiers* modifiers = DSLWriter::Context().fModifiersPool->add( |
| SkSL::Modifiers(SkSL::Layout(/*flags=*/0, /*location=*/-1, /*offset=*/-1, |
| /*binding=*/-1, /*index=*/-1, /*set=*/-1, |
| SK_MAIN_COORDS_BUILTIN, /*inputAttachmentIndex=*/-1), |
| SkSL::Modifiers::kNo_Flag)); |
| |
| fVar = DSLWriter::SymbolTable()->takeOwnershipOfIRNode(std::make_unique<SkSL::Variable>( |
| /*offset=*/-1, |
| modifiers, |
| fName, |
| DSLWriter::Context().fTypes.fFloat2.get(), |
| /*builtin=*/true, |
| SkSL::VariableStorage::kGlobal)); |
| return; |
| } |
| #endif |
| const SkSL::Symbol* result = (*DSLWriter::SymbolTable())[fName]; |
| SkASSERTF(result, "could not find '%.*s' in symbol table", (int)fName.length(), fName.data()); |
| fVar = &result->as<SkSL::Variable>(); |
| } |
| |
| void DSLGlobalVar::swap(DSLGlobalVar& other) { |
| INHERITED::swap(other); |
| } |
| |
| VariableStorage DSLGlobalVar::storage() const { |
| return VariableStorage::kGlobal; |
| } |
| |
| void DSLParameter::swap(DSLParameter& other) { |
| INHERITED::swap(other); |
| } |
| |
| VariableStorage DSLParameter::storage() const { |
| return VariableStorage::kParameter; |
| } |
| |
| |
| DSLPossibleExpression DSLVarBase::operator[](DSLExpression&& index) { |
| return DSLExpression(*this)[std::move(index)]; |
| } |
| |
| DSLPossibleExpression DSLVarBase::assign(DSLExpression expr) { |
| return DSLWriter::ConvertBinary(DSLExpression(*this).release(), SkSL::Token::Kind::TK_EQ, |
| expr.release()); |
| } |
| |
| DSLPossibleExpression DSLVar::operator=(DSLExpression expr) { |
| return this->assign(std::move(expr)); |
| } |
| |
| DSLPossibleExpression DSLGlobalVar::operator=(DSLExpression expr) { |
| return this->assign(std::move(expr)); |
| } |
| |
| DSLPossibleExpression DSLParameter::operator=(DSLExpression expr) { |
| return this->assign(std::move(expr)); |
| } |
| |
| } // namespace dsl |
| |
| } // namespace SkSL |