| // Copyright 2021 The Dawn & Tint Authors |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, this |
| // list of conditions and the following disclaimer. |
| // |
| // 2. Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // |
| // 3. Neither the name of the copyright holder nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <filesystem> |
| #include <string> |
| #include <tuple> |
| #include <utility> |
| #include <vector> |
| |
| #include "dawn/dawn_proc.h" |
| #include "src/dawn/node/binding/Flags.h" |
| #include "src/dawn/node/binding/GPU.h" |
| #include "tint/tint.h" |
| |
| #ifdef DAWN_EMIT_COVERAGE |
| extern "C" { |
| void __llvm_profile_reset_counters(void); |
| void __llvm_profile_set_filename(const char*); |
| int __llvm_profile_write_file(void); |
| } |
| #endif // DAWN_EMIT_COVERAGE |
| |
| namespace { |
| |
| Napi::Value CreateGPU(const Napi::CallbackInfo& info) { |
| const auto& env = info.Env(); |
| |
| std::tuple<std::vector<std::string>> args; |
| if (auto res = wgpu::interop::FromJS(info, args); !res) { |
| Napi::Error::New(env, res.error).ThrowAsJavaScriptException(); |
| return env.Undefined(); |
| } |
| |
| wgpu::binding::Flags flags; |
| |
| // Parse out the key=value flags out of the input args array |
| for (const auto& arg : std::get<0>(args)) { |
| const size_t sep_index = arg.find("="); |
| if (sep_index == std::string::npos) { |
| Napi::Error::New(env, "Flags expected argument format is <key>=<value>") |
| .ThrowAsJavaScriptException(); |
| return env.Undefined(); |
| } |
| flags.Set(arg.substr(0, sep_index), arg.substr(sep_index + 1)); |
| } |
| |
| // Construct a wgpu::interop::GPU interface, implemented by wgpu::bindings::GPU. |
| return wgpu::interop::GPU::Create<wgpu::binding::GPU>(env, std::move(flags)); |
| } |
| |
| #ifdef DAWN_EMIT_COVERAGE |
| struct Coverage { |
| Coverage() : output_path_{GetOutputPath()} { |
| __llvm_profile_set_filename(output_path_.string().c_str()); |
| } |
| ~Coverage() { std::filesystem::remove(output_path_); } |
| |
| static void Begin(const Napi::CallbackInfo& info) { |
| auto* coverage = static_cast<Coverage*>(info.Data()); |
| std::filesystem::remove(coverage->output_path_); |
| __llvm_profile_reset_counters(); |
| } |
| |
| static Napi::Value End(const Napi::CallbackInfo& info) { |
| __llvm_profile_write_file(); |
| auto* coverage = static_cast<Coverage*>(info.Data()); |
| return Napi::String::New(info.Env(), coverage->output_path_.string().c_str()); |
| } |
| |
| private: |
| static std::filesystem::path GetOutputPath() { return std::tmpnam(nullptr); } |
| |
| std::filesystem::path output_path_; |
| }; |
| #endif // DAWN_EMIT_COVERAGE |
| |
| } // namespace |
| |
| // Initialize() initializes the Dawn node module, registering all the WebGPU |
| // types into the global object, and adding the 'create' function on the exported |
| // object. |
| NAPI_MODULE_EXPORT Napi::Object Initialize(Napi::Env env, Napi::Object exports) { |
| // Set all the Dawn procedure function pointers. |
| dawnProcSetProcs(&dawn::native::GetProcs()); |
| |
| // Register all the interop types |
| exports.Set(Napi::String::New(env, "globals"), wgpu::interop::Initialize(env)); |
| |
| // Export function that creates and returns the wgpu::interop::GPU interface |
| exports.Set(Napi::String::New(env, "create"), Napi::Function::New<CreateGPU>(env)); |
| |
| #ifdef DAWN_EMIT_COVERAGE |
| Coverage* coverage = new Coverage(); |
| auto coverage_provider = Napi::Object::New(env); |
| coverage_provider.Set("begin", Napi::Function::New(env, &Coverage::Begin, nullptr, coverage)); |
| coverage_provider.Set("end", Napi::Function::New(env, &Coverage::End, nullptr, coverage)); |
| coverage_provider.AddFinalizer([](const Napi::Env&, Coverage* c) { delete c; }, coverage); |
| exports.Set(Napi::String::New(env, "coverage"), coverage_provider); |
| #endif // DAWN_EMIT_COVERAGE |
| |
| return exports; |
| } |
| |
| NODE_API_MODULE(addon, Initialize) |