| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SKSL_INTERFACEBLOCK |
| #define SKSL_INTERFACEBLOCK |
| |
| #include "src/sksl/ir/SkSLProgramElement.h" |
| #include "src/sksl/ir/SkSLSymbolTable.h" |
| #include "src/sksl/ir/SkSLVarDeclarations.h" |
| |
| namespace SkSL { |
| |
| /** |
| * An interface block, as in: |
| * |
| * out sk_PerVertex { |
| * layout(builtin=0) float4 sk_Position; |
| * layout(builtin=1) float sk_PointSize; |
| * }; |
| * |
| * At the IR level, this is represented by a single variable of struct type. |
| */ |
| struct InterfaceBlock : public ProgramElement { |
| static constexpr Kind kProgramElementKind = kInterfaceBlock_Kind; |
| |
| InterfaceBlock(int offset, const Variable* var, String typeName, String instanceName, |
| std::vector<std::unique_ptr<Expression>> sizes, |
| std::shared_ptr<SymbolTable> typeOwner) |
| : INHERITED(offset, kProgramElementKind) |
| , fVariable(*var) |
| , fTypeName(std::move(typeName)) |
| , fInstanceName(std::move(instanceName)) |
| , fSizes(std::move(sizes)) |
| , fTypeOwner(typeOwner) {} |
| |
| std::unique_ptr<ProgramElement> clone() const override { |
| std::vector<std::unique_ptr<Expression>> sizesClone; |
| for (const auto& s : fSizes) { |
| sizesClone.push_back(s->clone()); |
| } |
| return std::unique_ptr<ProgramElement>(new InterfaceBlock(fOffset, &fVariable, fTypeName, |
| fInstanceName, |
| std::move(sizesClone), |
| fTypeOwner)); |
| } |
| |
| String description() const override { |
| String result = fVariable.fModifiers.description() + fTypeName + " {\n"; |
| const Type* structType = &fVariable.fType; |
| while (structType->kind() == Type::kArray_Kind) { |
| structType = &structType->componentType(); |
| } |
| for (const auto& f : structType->fields()) { |
| result += f.description() + "\n"; |
| } |
| result += "}"; |
| if (fInstanceName.size()) { |
| result += " " + fInstanceName; |
| for (const auto& size : fSizes) { |
| result += "["; |
| if (size) { |
| result += size->description(); |
| } |
| result += "]"; |
| } |
| } |
| return result + ";"; |
| } |
| |
| const Variable& fVariable; |
| const String fTypeName; |
| const String fInstanceName; |
| std::vector<std::unique_ptr<Expression>> fSizes; |
| const std::shared_ptr<SymbolTable> fTypeOwner; |
| |
| typedef ProgramElement INHERITED; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif |