65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
// Copyright (c) 2016 Google Inc.
|
|
//
|
|
// 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.
|
|
|
|
// This program demonstrates basic SPIR-V module processing using
|
|
// SPIRV-Tools C++ API:
|
|
// * Assembling
|
|
// * Validating
|
|
// * Optimizing
|
|
// * Disassembling
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "spirv-tools/libspirv.hpp"
|
|
#include "spirv-tools/optimizer.hpp"
|
|
|
|
int main() {
|
|
const std::string source =
|
|
" OpCapability Shader "
|
|
" OpMemoryModel Logical GLSL450 "
|
|
" OpSource GLSL 450 "
|
|
" OpDecorate %spec SpecId 1 "
|
|
" %int = OpTypeInt 32 1 "
|
|
" %spec = OpSpecConstant %int 0 "
|
|
"%const = OpConstant %int 42";
|
|
|
|
spvtools::SpirvTools core(SPV_ENV_VULKAN_1_0);
|
|
spvtools::Optimizer opt(SPV_ENV_VULKAN_1_0);
|
|
|
|
auto print_msg_to_stderr = [](spv_message_level_t, const char*,
|
|
const spv_position_t&, const char* m) {
|
|
std::cerr << "error: " << m << std::endl;
|
|
};
|
|
core.SetMessageConsumer(print_msg_to_stderr);
|
|
opt.SetMessageConsumer(print_msg_to_stderr);
|
|
|
|
std::vector<uint32_t> spirv;
|
|
if (!core.Assemble(source, &spirv)) return 1;
|
|
if (!core.Validate(spirv)) return 1;
|
|
|
|
opt.RegisterPass(spvtools::CreateSetSpecConstantDefaultValuePass({{1, "42"}}))
|
|
.RegisterPass(spvtools::CreateFreezeSpecConstantValuePass())
|
|
.RegisterPass(spvtools::CreateUnifyConstantPass())
|
|
.RegisterPass(spvtools::CreateStripDebugInfoPass());
|
|
if (!opt.Run(spirv.data(), spirv.size(), &spirv)) return 1;
|
|
|
|
std::string disassembly;
|
|
if (!core.Disassemble(spirv, &disassembly)) return 1;
|
|
std::cout << disassembly << "\n";
|
|
|
|
return 0;
|
|
}
|