1 files changed, 82 insertions, 0 deletions
diff --git a/Source/Core/VideoCommon/Src/VideoBackendBase.cpp b/Source/Core/VideoCommon/Src/VideoBackendBase.cpp
new file mode 100644
index 0000000000..4769ede3a0
--- /dev/null
+++ b/Source/Core/VideoCommon/Src/VideoBackendBase.cpp
@@ -0,0 +1,82 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "VideoBackendBase.h"
+
+// TODO: ugly
+#ifdef _WIN32
+#include "../../../Plugins/Plugin_VideoDX9/Src/VideoBackend.h"
+#include "../../../Plugins/Plugin_VideoDX11/Src/VideoBackend.h"
+#endif
+#if !defined(USE_GLES) || USE_GLES3
+#include "../../../Plugins/Plugin_VideoOGL/Src/VideoBackend.h"
+#endif
+#include "../../../Plugins/Plugin_VideoSoftware/Src/VideoBackend.h"
+
+std::vector<VideoBackend*> g_available_video_backends;
+VideoBackend* g_video_backend = NULL;
+static VideoBackend* s_default_backend = NULL;
+
+#ifdef _WIN32
+#include <windows.h>
+
+// http://msdn.microsoft.com/en-us/library/ms725491.aspx
+static bool IsGteVista() 
+{
+	OSVERSIONINFOEX osvi;
+	DWORDLONG dwlConditionMask = 0;
+
+	ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+	osvi.dwMajorVersion = 6;
+
+	VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
+
+	return VerifyVersionInfo(&osvi, VER_MAJORVERSION, dwlConditionMask) != FALSE;
+}
+#endif
+
+void VideoBackend::PopulateList()
+{
+	VideoBackend* backends[4] = { NULL };
+
+	// D3D11 > OGL > D3D9 > SW
+#ifdef _WIN32
+	g_available_video_backends.push_back(backends[2] = new DX9::VideoBackend);
+	if (IsGteVista())
+		g_available_video_backends.push_back(backends[0] = new DX11::VideoBackend);
+#endif
+#if !defined(USE_GLES) || USE_GLES3
+	g_available_video_backends.push_back(backends[1] = new OGL::VideoBackend);
+#endif
+	g_available_video_backends.push_back(backends[3] = new SW::VideoSoftware);
+
+	for (int i = 0; i < 4; ++i)
+	{
+		if (backends[i])
+		{
+			s_default_backend = g_video_backend = backends[i];
+			break;
+		}
+	}
+}
+
+void VideoBackend::ClearList()
+{
+	while (!g_available_video_backends.empty())
+	{
+		delete g_available_video_backends.back();
+		g_available_video_backends.pop_back();
+	}
+}
+
+void VideoBackend::ActivateBackend(const std::string& name)
+{
+	if (name.length() == 0) // If NULL, set it to the default backend (expected behavior)
+		g_video_backend = s_default_backend;
+
+	for (std::vector<VideoBackend*>::const_iterator it = g_available_video_backends.begin(); it != g_available_video_backends.end(); ++it)
+		if (name == (*it)->GetName())
+			g_video_backend = *it;
+}