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// Copyright 2018 The Dawn 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 "dawn_native/d3d12/PlatformFunctions.h"
#include "common/DynamicLib.h"
#include <comdef.h>
#include <array>
#include <sstream>
namespace dawn_native { namespace d3d12 {
namespace {
// Extract Version from "10.0.{Version}.0" if possible, otherwise return 0.
uint32_t GetWindowsSDKVersionFromDirectoryName(const char* directoryName) {
constexpr char kPrefix[] = "10.0.";
constexpr char kPostfix[] = ".0";
constexpr uint32_t kPrefixLen = sizeof(kPrefix) - 1;
constexpr uint32_t kPostfixLen = sizeof(kPostfix) - 1;
const uint32_t directoryNameLen = strlen(directoryName);
if (directoryNameLen < kPrefixLen + kPostfixLen + 1) {
return 0;
}
// Check if directoryName starts with "10.0.".
if (strncmp(directoryName, kPrefix, kPrefixLen) != 0) {
return 0;
}
// Check if directoryName ends with ".0".
if (strncmp(directoryName + (directoryNameLen - kPostfixLen), kPostfix, kPostfixLen) !=
0) {
return 0;
}
// Extract Version from "10.0.{Version}.0" and convert Version into an integer.
return atoi(directoryName + kPrefixLen);
}
class ScopedFileHandle final {
public:
explicit ScopedFileHandle(HANDLE handle) : mHandle(handle) {
}
~ScopedFileHandle() {
if (mHandle != INVALID_HANDLE_VALUE) {
ASSERT(FindClose(mHandle));
}
}
HANDLE GetHandle() const {
return mHandle;
}
private:
HANDLE mHandle;
};
std::string GetWindowsSDKBasePath() {
const char* kDefaultWindowsSDKPath =
"C:\\Program Files (x86)\\Windows Kits\\10\\bin\\*";
WIN32_FIND_DATAA fileData;
ScopedFileHandle handle(FindFirstFileA(kDefaultWindowsSDKPath, &fileData));
if (handle.GetHandle() == INVALID_HANDLE_VALUE) {
return "";
}
uint32_t highestWindowsSDKVersion = 0;
do {
if (!(fileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
continue;
}
highestWindowsSDKVersion =
std::max(highestWindowsSDKVersion,
GetWindowsSDKVersionFromDirectoryName(fileData.cFileName));
} while (FindNextFileA(handle.GetHandle(), &fileData));
if (highestWindowsSDKVersion == 0) {
return "";
}
// Currently we only support using DXC on x64.
std::ostringstream ostream;
ostream << "C:\\Program Files (x86)\\Windows Kits\\10\\bin\\10.0."
<< highestWindowsSDKVersion << ".0\\x64\\";
return ostream.str();
}
} // anonymous namespace
PlatformFunctions::PlatformFunctions() = default;
PlatformFunctions::~PlatformFunctions() = default;
MaybeError PlatformFunctions::LoadFunctions() {
DAWN_TRY(LoadD3D12());
DAWN_TRY(LoadDXGI());
LoadDXCLibraries();
DAWN_TRY(LoadFXCompiler());
DAWN_TRY(LoadD3D11());
LoadPIXRuntime();
return {};
}
MaybeError PlatformFunctions::LoadD3D12() {
std::string error;
if (!mD3D12Lib.Open("d3d12.dll", &error) ||
!mD3D12Lib.GetProc(&d3d12CreateDevice, "D3D12CreateDevice", &error) ||
!mD3D12Lib.GetProc(&d3d12GetDebugInterface, "D3D12GetDebugInterface", &error) ||
!mD3D12Lib.GetProc(&d3d12SerializeRootSignature, "D3D12SerializeRootSignature",
&error) ||
!mD3D12Lib.GetProc(&d3d12CreateRootSignatureDeserializer,
"D3D12CreateRootSignatureDeserializer", &error) ||
!mD3D12Lib.GetProc(&d3d12SerializeVersionedRootSignature,
"D3D12SerializeVersionedRootSignature", &error) ||
!mD3D12Lib.GetProc(&d3d12CreateVersionedRootSignatureDeserializer,
"D3D12CreateVersionedRootSignatureDeserializer", &error)) {
return DAWN_INTERNAL_ERROR(error.c_str());
}
return {};
}
MaybeError PlatformFunctions::LoadD3D11() {
std::string error;
if (!mD3D11Lib.Open("d3d11.dll", &error) ||
!mD3D11Lib.GetProc(&d3d11on12CreateDevice, "D3D11On12CreateDevice", &error)) {
return DAWN_INTERNAL_ERROR(error.c_str());
}
return {};
}
MaybeError PlatformFunctions::LoadDXGI() {
std::string error;
if (!mDXGILib.Open("dxgi.dll", &error) ||
!mDXGILib.GetProc(&dxgiGetDebugInterface1, "DXGIGetDebugInterface1", &error) ||
!mDXGILib.GetProc(&createDxgiFactory2, "CreateDXGIFactory2", &error)) {
return DAWN_INTERNAL_ERROR(error.c_str());
}
return {};
}
void PlatformFunctions::LoadDXCLibraries() {
const std::string& windowsSDKBasePath = GetWindowsSDKBasePath();
LoadDXIL(windowsSDKBasePath);
LoadDXCompiler(windowsSDKBasePath);
}
void PlatformFunctions::LoadDXIL(const std::string& baseWindowsSDKPath) {
const char* dxilDLLName = "dxil.dll";
const std::array<std::string, 2> kDxilDLLPaths = {
{dxilDLLName, baseWindowsSDKPath + dxilDLLName}};
for (const std::string& dxilDLLPath : kDxilDLLPaths) {
if (mDXILLib.Open(dxilDLLPath, nullptr)) {
return;
}
}
ASSERT(!mDXILLib.Valid());
}
void PlatformFunctions::LoadDXCompiler(const std::string& baseWindowsSDKPath) {
// DXIL must be loaded before DXC, otherwise shader signing is unavailable
if (!mDXILLib.Valid()) {
return;
}
const char* dxCompilerDLLName = "dxcompiler.dll";
const std::array<std::string, 2> kDxCompilerDLLPaths = {
{dxCompilerDLLName, baseWindowsSDKPath + dxCompilerDLLName}};
DynamicLib dxCompilerLib;
for (const std::string& dxCompilerDLLName : kDxCompilerDLLPaths) {
if (dxCompilerLib.Open(dxCompilerDLLName, nullptr)) {
break;
}
}
if (dxCompilerLib.Valid() &&
dxCompilerLib.GetProc(&dxcCreateInstance, "DxcCreateInstance", nullptr)) {
mDXCompilerLib = std::move(dxCompilerLib);
} else {
mDXILLib.Close();
}
}
MaybeError PlatformFunctions::LoadFXCompiler() {
std::string error;
if (!mFXCompilerLib.Open("d3dcompiler_47.dll", &error) ||
!mFXCompilerLib.GetProc(&d3dCompile, "D3DCompile", &error)) {
return DAWN_INTERNAL_ERROR(error.c_str());
}
return {};
}
bool PlatformFunctions::IsPIXEventRuntimeLoaded() const {
return mPIXEventRuntimeLib.Valid();
}
bool PlatformFunctions::IsDXCAvailable() const {
return mDXILLib.Valid() && mDXCompilerLib.Valid();
}
void PlatformFunctions::LoadPIXRuntime() {
if (!mPIXEventRuntimeLib.Open("WinPixEventRuntime.dll") ||
!mPIXEventRuntimeLib.GetProc(&pixBeginEventOnCommandList,
"PIXBeginEventOnCommandList") ||
!mPIXEventRuntimeLib.GetProc(&pixEndEventOnCommandList, "PIXEndEventOnCommandList") ||
!mPIXEventRuntimeLib.GetProc(&pixSetMarkerOnCommandList, "PIXSetMarkerOnCommandList")) {
mPIXEventRuntimeLib.Close();
}
}
}} // namespace dawn_native::d3d12