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// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/lang/spirv/writer/writer.h"
#include <memory>
#include <utility>
#include "src/tint/lang/spirv/writer/ast_printer/ast_printer.h"
#include "src/tint/lang/spirv/writer/common/option_builder.h"
#include "src/tint/lang/spirv/writer/printer/printer.h"
#include "src/tint/lang/spirv/writer/raise/raise.h"
#include "src/tint/lang/wgsl/reader/lower/lower.h"
#if TINT_BUILD_WGSL_READER
#include "src/tint/lang/wgsl/reader/program_to_ir/program_to_ir.h"
#endif
// Included by 'ast_printer.h', included again here for './tools/run gen' track the dependency.
#include "spirv/unified1/spirv.h"
namespace tint::spirv::writer {
Output::Output() = default;
Output::~Output() = default;
Output::Output(const Output&) = default;
Result<Output> Generate(const Program& program, const Options& options) {
if (!program.IsValid()) {
return Failure{program.Diagnostics()};
}
bool zero_initialize_workgroup_memory =
!options.disable_workgroup_init && options.use_zero_initialize_workgroup_memory_extension;
{
diag::List validation_diagnostics;
if (!ValidateBindingOptions(options, validation_diagnostics)) {
return Failure{validation_diagnostics};
}
}
Output output;
if (options.use_tint_ir) {
#if TINT_BUILD_WGSL_READER
// Convert the AST program to an IR module.
auto converted = wgsl::reader::ProgramToIR(program);
if (!converted) {
return converted.Failure();
}
auto ir = converted.Move();
// Lower from WGSL-dialect to core-dialect
if (auto res = wgsl::reader::Lower(ir); !res) {
return res.Failure();
}
// Raise from core-dialect to SPIR-V-dialect.
if (auto res = raise::Raise(ir, options); !res) {
return std::move(res.Failure());
}
// Generate the SPIR-V code.
auto impl = std::make_unique<Printer>(ir, zero_initialize_workgroup_memory);
auto spirv = impl->Generate();
if (!spirv) {
return std::move(spirv.Failure());
}
output.spirv = std::move(spirv.Get());
#else
return Failure{"use_tint_ir requires building with TINT_BUILD_WGSL_READER"};
#endif
} else {
// Sanitize the program.
auto sanitized_result = Sanitize(program, options);
if (!sanitized_result.program.IsValid()) {
return Failure{sanitized_result.program.Diagnostics()};
}
// Generate the SPIR-V code.
auto impl = std::make_unique<ASTPrinter>(
sanitized_result.program, zero_initialize_workgroup_memory,
options.experimental_require_subgroup_uniform_control_flow);
if (!impl->Generate()) {
return Failure{impl->Diagnostics()};
}
output.spirv = std::move(impl->Result());
}
return output;
}
} // namespace tint::spirv::writer