83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
// Copyright 2011 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <vector>
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// TODO: ugly
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#ifdef _WIN32
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#include "VideoBackends/D3D/VideoBackend.h"
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#include "VideoBackends/D3D12/VideoBackend.h"
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#endif
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#include "VideoBackends/OGL/VideoBackend.h"
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#include "VideoBackends/Software/VideoBackend.h"
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#include "VideoCommon/VideoBackendBase.h"
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std::vector<std::unique_ptr<VideoBackendBase>> g_available_video_backends;
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VideoBackendBase* g_video_backend = nullptr;
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static VideoBackendBase* s_default_backend = nullptr;
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#ifdef _WIN32
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#include <windows.h>
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// Nvidia drivers >= v302 will check if the application exports a global
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// variable named NvOptimusEnablement to know if it should run the app in high
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// performance graphics mode or using the IGP.
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extern "C" {
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__declspec(dllexport) DWORD NvOptimusEnablement = 1;
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}
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#endif
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void VideoBackendBase::PopulateList()
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{
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// OGL > D3D11 > D3D12 > SW
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g_available_video_backends.push_back(std::make_unique<OGL::VideoBackend>());
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#ifdef _WIN32
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g_available_video_backends.push_back(std::make_unique<DX11::VideoBackend>());
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// More robust way to check for D3D12 support than (unreliable) OS version checks.
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HMODULE d3d12_module = LoadLibraryA("d3d12.dll");
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if (d3d12_module != nullptr)
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{
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FreeLibrary(d3d12_module);
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g_available_video_backends.push_back(std::make_unique<DX12::VideoBackend>());
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}
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#endif
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g_available_video_backends.push_back(std::make_unique<SW::VideoSoftware>());
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const auto iter = std::find_if(g_available_video_backends.begin(), g_available_video_backends.end(), [](const auto& backend) {
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return backend != nullptr;
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});
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if (iter == g_available_video_backends.end())
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return;
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s_default_backend = iter->get();
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g_video_backend = iter->get();
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}
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void VideoBackendBase::ClearList()
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{
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g_available_video_backends.clear();
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}
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void VideoBackendBase::ActivateBackend(const std::string& name)
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{
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// If empty, set it to the default backend (expected behavior)
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if (name.empty())
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g_video_backend = s_default_backend;
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const auto iter = std::find_if(g_available_video_backends.begin(), g_available_video_backends.end(), [&name](const auto& backend) {
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return name == backend->GetName();
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});
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if (iter == g_available_video_backends.end())
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return;
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g_video_backend = iter->get();
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}
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