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// Copyright 2023 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.
#ifndef SRC_DAWN_NATIVE_D3D_PLATFORMFUNCTIONS_H_
#define SRC_DAWN_NATIVE_D3D_PLATFORMFUNCTIONS_H_
#include <d3dcompiler.h>
#include <string>
#include "dawn/native/d3d/d3d_platform.h"
#include "dawn/common/DynamicLib.h"
#include "dawn/native/Error.h"
namespace dawn::native::d3d {
// Loads the functions required from the platform dynamically so that we don't need to rely on
// them being present in the system. For example linking against d3d12.lib would prevent
// dawn_native from loading on Windows 7 system where d3d12.dll doesn't exist.
class PlatformFunctions {
public:
PlatformFunctions();
virtual ~PlatformFunctions();
MaybeError LoadFunctions();
bool IsPIXEventRuntimeLoaded() const;
bool IsDXCBinaryAvailable() const;
// Functions from dxgi.dll
using PFN_DXGI_GET_DEBUG_INTERFACE1 = HRESULT(WINAPI*)(UINT Flags,
REFIID riid,
_COM_Outptr_ void** pDebug);
PFN_DXGI_GET_DEBUG_INTERFACE1 dxgiGetDebugInterface1 = nullptr;
using PFN_CREATE_DXGI_FACTORY2 = HRESULT(WINAPI*)(UINT Flags,
REFIID riid,
_COM_Outptr_ void** ppFactory);
PFN_CREATE_DXGI_FACTORY2 createDxgiFactory2 = nullptr;
// Functions from dxcompiler.dll
using PFN_DXC_CREATE_INSTANCE = HRESULT(WINAPI*)(REFCLSID rclsid,
REFIID riid,
_COM_Outptr_ void** ppCompiler);
PFN_DXC_CREATE_INSTANCE dxcCreateInstance = nullptr;
// Functions from d3d3compiler.dll
pD3DCompile d3dCompile = nullptr;
pD3DDisassemble d3dDisassemble = nullptr;
private:
MaybeError LoadDXGI();
void LoadDXCLibraries();
void LoadDXIL(const std::string& baseWindowsSDKPath);
void LoadDXCompiler(const std::string& baseWindowsSDKPath);
MaybeError LoadFXCompiler();
void LoadPIXRuntime();
DynamicLib mDXGILib;
DynamicLib mDXILLib;
DynamicLib mDXCompilerLib;
DynamicLib mFXCompilerLib;
};
} // namespace dawn::native::d3d
#endif // SRC_DAWN_NATIVE_D3D_PLATFORMFUNCTIONS_H_