Function VR_LoadHmdSystemInternal

src/openvr_api_public.cpp:111–171

}

EVRInitError VR_LoadHmdSystemInternal()
{
	std::string sRuntimePath, sConfigPath, sLogPath;

	bool bReadPathRegistry = CVRPathRegistry_Public::GetPaths( &sRuntimePath, &sConfigPath, &sLogPath, NULL, NULL );
	if( !bReadPathRegistry )
	{
		return vr::VRInitError_Init_PathRegistryNotFound;
	}

	// figure out where we're going to look for vrclient.dll
	// see if the specified path actually exists.
	if( !Path_IsDirectory( sRuntimePath ) )
	{
		return vr::VRInitError_Init_InstallationNotFound;
	}

	// Because we don't have a way to select debug vs. release yet we'll just
	// use debug if it's there
#if defined( WIN32 ) || defined( LINUX32 )
	std::string sTestPath = Path_Join( sRuntimePath, "bin" );
#else
	std::string sTestPath = Path_Join( sRuntimePath, "bin", PLATSUBDIR );
#endif
	if( !Path_IsDirectory( sTestPath ) )
	{
		return vr::VRInitError_Init_InstallationCorrupt;
	}

#if defined( WIN64 )
	std::string sDLLPath = Path_Join( sTestPath, "vrclient_x64" DYNAMIC_LIB_EXT );
#else
	std::string sDLLPath = Path_Join( sTestPath, "vrclient" DYNAMIC_LIB_EXT );
#endif

	// only look in the override
	void *pMod = SharedLib_Load( sDLLPath.c_str() );
	// nothing more to do if we can't load the DLL
	if( !pMod )
	{
		return vr::VRInitError_Init_VRClientDLLNotFound;
	}

	VRClientCoreFactoryFn fnFactory = ( VRClientCoreFactoryFn )( SharedLib_GetFunction( pMod, "VRClientCoreFactory" ) );
	if( !fnFactory )
	{
		SharedLib_Unload( pMod );
		return vr::VRInitError_Init_FactoryNotFound;
	}

	int nReturnCode = 0;
	g_pHmdSystem = static_cast< IVRClientCore * > ( fnFactory( vr::IVRClientCore_Version, &nReturnCode ) );
	if( !g_pHmdSystem )
	{
		SharedLib_Unload( pMod );
		return vr::VRInitError_Init_InterfaceNotFound;
	}