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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "impeller/compiler/compiler_backend.h"
#include "impeller/base/comparable.h"
namespace impeller {
namespace compiler {
CompilerBackend::CompilerBackend(MSLCompiler compiler)
: CompilerBackend(Type::kMSL, compiler) {}
CompilerBackend::CompilerBackend(GLSLCompiler compiler)
: CompilerBackend(Type::kGLSL, compiler) {}
CompilerBackend::CompilerBackend(SkSLCompiler compiler)
: CompilerBackend(Type::kSkSL, compiler) {}
CompilerBackend::CompilerBackend() = default;
CompilerBackend::CompilerBackend(Type type, Compiler compiler)
: type_(type), compiler_(std::move(compiler)){};
CompilerBackend::~CompilerBackend() = default;
const spirv_cross::Compiler* CompilerBackend::operator->() const {
return GetCompiler();
}
uint32_t CompilerBackend::GetExtendedMSLResourceBinding(
ExtendedResourceIndex index,
spirv_cross::ID id) const {
if (auto compiler = GetMSLCompiler()) {
switch (index) {
case ExtendedResourceIndex::kPrimary:
return compiler->get_automatic_msl_resource_binding(id);
case ExtendedResourceIndex::kSecondary:
return compiler->get_automatic_msl_resource_binding_secondary(id);
break;
}
}
if (auto compiler = GetGLSLCompiler()) {
return compiler->get_decoration(id, spv::Decoration::DecorationBinding);
}
const auto kOOBIndex = static_cast<uint32_t>(-1);
return kOOBIndex;
}
const spirv_cross::Compiler* CompilerBackend::GetCompiler() const {
if (auto compiler = GetGLSLCompiler()) {
return compiler;
}
if (auto compiler = GetMSLCompiler()) {
return compiler;
}
if (auto compiler = GetSkSLCompiler()) {
return compiler;
}
return nullptr;
}
spirv_cross::Compiler* CompilerBackend::GetCompiler() {
if (auto* msl = std::get_if<MSLCompiler>(&compiler_)) {
return msl->get();
}
if (auto* glsl = std::get_if<GLSLCompiler>(&compiler_)) {
return glsl->get();
}
if (auto* sksl = std::get_if<SkSLCompiler>(&compiler_)) {
return sksl->get();
}
return nullptr;
}
const spirv_cross::CompilerMSL* CompilerBackend::GetMSLCompiler() const {
if (auto* msl = std::get_if<MSLCompiler>(&compiler_)) {
return msl->get();
}
return nullptr;
}
const spirv_cross::CompilerGLSL* CompilerBackend::GetGLSLCompiler() const {
if (auto* glsl = std::get_if<GLSLCompiler>(&compiler_)) {
return glsl->get();
}
return nullptr;
}
const CompilerSkSL* CompilerBackend::GetSkSLCompiler() const {
if (auto* sksl = std::get_if<SkSLCompiler>(&compiler_)) {
return sksl->get();
}
return nullptr;
}
CompilerBackend::operator bool() const {
return !!GetCompiler();
}
CompilerBackend::Type CompilerBackend::GetType() const {
return type_;
}
} // namespace compiler
} // namespace impeller