зеркало из https://github.com/mozilla/gecko-dev.git
97 строки
3.3 KiB
C
97 строки
3.3 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#pragma once
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/* this file is included by exe stubs, don't pull xpcom into it. */
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#include <d3d10_1.h>
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#include <dxgi.h>
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#include <d3d10misc.h>
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/*
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* Checks to see if the d3d implementation supports feature level 9.3 or
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* above. Metrofx can't run on systems that fail this check.
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*
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* Note, this can hit perf, don't call this unless you absolutely have to.
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* Both the ceh and winrt widget code save a cached result in the registry.
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*/
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static bool D3DFeatureLevelCheck()
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{
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HMODULE dxgiModule = LoadLibraryA("dxgi.dll");
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if (!dxgiModule) {
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return false;
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}
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decltype(CreateDXGIFactory1)* createDXGIFactory1 =
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(decltype(CreateDXGIFactory1)*) GetProcAddress(dxgiModule, "CreateDXGIFactory1");
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if (!createDXGIFactory1) {
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FreeLibrary(dxgiModule);
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return false;
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}
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HMODULE d3d10module = LoadLibraryA("d3d10_1.dll");
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if (!d3d10module) {
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FreeLibrary(dxgiModule);
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return false;
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}
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decltype(D3D10CreateDevice1)* createD3DDevice =
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(decltype(D3D10CreateDevice1)*) GetProcAddress(d3d10module,
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"D3D10CreateDevice1");
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if (!createD3DDevice) {
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FreeLibrary(d3d10module);
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FreeLibrary(dxgiModule);
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return false;
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}
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IDXGIFactory1* factory1;
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if (FAILED(createDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&factory1))) {
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FreeLibrary(d3d10module);
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FreeLibrary(dxgiModule);
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return false;
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}
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IDXGIAdapter1* adapter1;
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if (FAILED(factory1->EnumAdapters1(0, &adapter1))) {
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factory1->Release();
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FreeLibrary(d3d10module);
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FreeLibrary(dxgiModule);
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return false;
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}
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// Try for DX10.1
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ID3D10Device1* device;
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if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
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D3D10_CREATE_DEVICE_BGRA_SUPPORT |
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D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
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D3D10_FEATURE_LEVEL_10_1,
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D3D10_1_SDK_VERSION, &device))) {
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// Try for DX10
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if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
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D3D10_CREATE_DEVICE_BGRA_SUPPORT |
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D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
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D3D10_FEATURE_LEVEL_10_0,
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D3D10_1_SDK_VERSION, &device))) {
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// Try for DX9.3 (we fall back to cairo and cairo has support for D3D 9.3)
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if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
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D3D10_CREATE_DEVICE_BGRA_SUPPORT |
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D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
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D3D10_FEATURE_LEVEL_9_3,
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D3D10_1_SDK_VERSION, &device))) {
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adapter1->Release();
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factory1->Release();
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FreeLibrary(d3d10module);
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FreeLibrary(dxgiModule);
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return false;
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}
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}
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}
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device->Release();
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adapter1->Release();
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factory1->Release();
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FreeLibrary(d3d10module);
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FreeLibrary(dxgiModule);
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return true;
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}
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