src/tint/cmd/bench/glsl/writer_bench.cc

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#include "src/tint/cmd/bench/bench.h"
#include "src/tint/lang/glsl/writer/helpers/generate_bindings.h"
#include "src/tint/lang/glsl/writer/writer.h"
#include "src/tint/lang/wgsl/ast/identifier.h"
#include "src/tint/lang/wgsl/ast/module.h"
#include "src/tint/lang/wgsl/reader/reader.h"

namespace tint::glsl::writer {
namespace {

void GenerateGLSL(benchmark::State& state, std::string input_name) {
    auto res = bench::GetWgslProgram(input_name);
    TINT_ASSERT(res == Success) << res.Failure().reason;

    std::vector<std::string> names;
    // Get the list of entry point names.
    for (auto* func : res->program.AST().Functions()) {
        if (func->IsEntryPoint()) {
            names.push_back(func->name->symbol.Name());
        }
    }

    for (auto _ : state) {
        for (auto& name : names) {
            // Convert the AST program to an IR module.
            auto ir = tint::wgsl::reader::ProgramToLoweredIR(res->program);
            TINT_ASSERT(ir == Success) << ir.Failure().reason;

            tint::glsl::writer::Options gen_options = {};
            gen_options.entry_point_name = name;
            {
                auto data = tint::glsl::writer::GenerateBindings(ir.Get(), name);
                gen_options.bindings = std::move(data.bindings);
                gen_options.texture_builtins_from_uniform =
                    std::move(data.texture_builtins_from_uniform);
            }

            // Generate GLSL.
            auto gen_res = Generate(ir.Get(), gen_options);
            TINT_ASSERT(gen_res == Success) << gen_res.Failure().reason;
        }
    }
}

TINT_BENCHMARK_PROGRAMS(GenerateGLSL);

}  // namespace
}  // namespace tint::glsl::writer