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// Copyright 2021 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/val/val.h"
#include "src/utils/io/command.h"
#include "src/utils/io/tmpfile.h"
#ifdef _WIN32
#include <Windows.h>
#include <d3dcommon.h>
#include <d3dcompiler.h>
#include <wrl.h>
using Microsoft::WRL::ComPtr;
#endif // _WIN32
namespace tint {
namespace val {
Result HlslUsingDXC(const std::string& dxc_path,
const std::string& source,
const EntryPointList& entry_points) {
Result result;
auto dxc = utils::Command(dxc_path);
if (!dxc.Found()) {
result.output = "DXC not found at '" + std::string(dxc_path) + "'";
result.failed = true;
return result;
}
utils::TmpFile file;
file << source;
for (auto ep : entry_points) {
const char* profile = "";
switch (ep.second) {
case ast::PipelineStage::kNone:
result.output = "Invalid PipelineStage";
result.failed = true;
return result;
case ast::PipelineStage::kVertex:
profile = "-T vs_6_0";
break;
case ast::PipelineStage::kFragment:
profile = "-T ps_6_0";
break;
case ast::PipelineStage::kCompute:
profile = "-T cs_6_0";
break;
}
auto res = dxc(profile, "-E " + ep.first, file.Path());
if (!res.out.empty()) {
if (!result.output.empty()) {
result.output += "\n";
}
result.output += res.out;
}
if (!res.err.empty()) {
if (!result.output.empty()) {
result.output += "\n";
}
result.output += res.err;
}
result.failed = (res.error_code != 0);
}
if (entry_points.empty()) {
result.output = "No entrypoint found";
result.failed = true;
return result;
}
return result;
}
#ifdef _WIN32
Result HlslUsingFXC(const std::string& source,
const EntryPointList& entry_points) {
Result result;
// This library leaks if an error happens in this function, but it is ok
// because it is loaded at most once, and the executables using HlslUsingFXC
// are short-lived.
HMODULE fxcLib = LoadLibraryA("d3dcompiler_47.dll");
if (fxcLib == nullptr) {
result.output = "Couldn't load FXC";
result.failed = true;
return result;
}
pD3DCompile d3dCompile =
reinterpret_cast<pD3DCompile>(GetProcAddress(fxcLib, "D3DCompile"));
if (d3dCompile == nullptr) {
result.output = "Couldn't load D3DCompile from FXC";
result.failed = true;
return result;
}
for (auto ep : entry_points) {
const char* profile = "";
switch (ep.second) {
case ast::PipelineStage::kNone:
result.output = "Invalid PipelineStage";
result.failed = true;
return result;
case ast::PipelineStage::kVertex:
profile = "vs_5_1";
break;
case ast::PipelineStage::kFragment:
profile = "ps_5_1";
break;
case ast::PipelineStage::kCompute:
profile = "cs_5_1";
break;
}
ComPtr<ID3DBlob> compiledShader;
ComPtr<ID3DBlob> errors;
if (FAILED(d3dCompile(source.c_str(), source.length(), nullptr, nullptr,
nullptr, ep.first.c_str(), profile, 0, 0,
&compiledShader, &errors))) {
result.output = static_cast<char*>(errors->GetBufferPointer());
result.failed = true;
return result;
}
}
FreeLibrary(fxcLib);
if (entry_points.empty()) {
result.output = "No entrypoint found";
result.failed = true;
return result;
}
return result;
}
#endif // _WIN32
} // namespace val
} // namespace tint