void FSlateD3DRenderer::Private_CreateViewport( TSharedRef<SWindow> InWindow, const FVector2D &WindowSize )
{
TSharedRef< FGenericWindow > NativeWindow = InWindow->GetNativeWindow().ToSharedRef();
bool bFullscreen = IsViewportFullscreen( *InWindow );
bool bWindowed = true;//@todo implement fullscreen: !bFullscreen;
DXGI_SWAP_CHAIN_DESC SwapChainDesc;
FMemory::Memzero(&SwapChainDesc, sizeof(SwapChainDesc) );
SwapChainDesc.BufferCount = 1;
SwapChainDesc.BufferDesc.Width = FMath::TruncToInt(WindowSize.X);
SwapChainDesc.BufferDesc.Height = FMath::TruncToInt(WindowSize.Y);
SwapChainDesc.BufferDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
SwapChainDesc.BufferDesc.RefreshRate.Numerator = 0;
SwapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
SwapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
SwapChainDesc.OutputWindow = (HWND)NativeWindow->GetOSWindowHandle();
SwapChainDesc.SampleDesc.Count = 1;
SwapChainDesc.SampleDesc.Quality = 0;
SwapChainDesc.Windowed = bWindowed;
SwapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
SwapChainDesc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
TRefCountPtr<IDXGIDevice> DXGIDevice;
HRESULT Hr = GD3DDevice->QueryInterface( __uuidof(IDXGIDevice), (void**)DXGIDevice.GetInitReference() );
check( SUCCEEDED(Hr) );
TRefCountPtr<IDXGIAdapter> DXGIAdapter;
Hr = DXGIDevice->GetParent(__uuidof(IDXGIAdapter), (void **)DXGIAdapter.GetInitReference() );
check( SUCCEEDED(Hr) );
TRefCountPtr<IDXGIFactory> DXGIFactory;
DXGIAdapter->GetParent(__uuidof(IDXGIFactory), (void **)DXGIFactory.GetInitReference() );
check( SUCCEEDED(Hr) );
FSlateD3DViewport Viewport;
Hr = DXGIFactory->CreateSwapChain(DXGIDevice.GetReference(), &SwapChainDesc, Viewport.D3DSwapChain.GetInitReference() );
check( SUCCEEDED(Hr) );
Hr = DXGIFactory->MakeWindowAssociation((HWND)NativeWindow->GetOSWindowHandle(),DXGI_MWA_NO_ALT_ENTER);
check(SUCCEEDED(Hr));
uint32 Width = FMath::TruncToInt(WindowSize.X);
uint32 Height = FMath::TruncToInt(WindowSize.Y);
Viewport.ViewportInfo.MaxDepth = 1.0f;
Viewport.ViewportInfo.MinDepth = 0.0f;
Viewport.ViewportInfo.Width = Width;
Viewport.ViewportInfo.Height = Height;
Viewport.ViewportInfo.TopLeftX = 0;
Viewport.ViewportInfo.TopLeftY = 0;
CreateBackBufferResources( Viewport.D3DSwapChain, Viewport.BackBufferTexture, Viewport.RenderTargetView );
Viewport.ProjectionMatrix = CreateProjectionMatrixD3D( Width, Height );
WindowToViewportMap.Add( &InWindow.Get(), Viewport );
}
void FSlateOpenGLRenderer::UpdateFullscreenState( const TSharedRef<SWindow> InWindow, uint32 OverrideResX, uint32 OverrideResY )
{
FSlateOpenGLViewport* Viewport = WindowToViewportMap.Find( &InWindow.Get() );
if( Viewport )
{
bool bFullscreen = IsViewportFullscreen( *InWindow );
// todo: support Fullscreen modes in OpenGL
// uint32 ResX = OverrideResX ? OverrideResX : GSystemResolution.ResX;
// uint32 ResY = OverrideResY ? OverrideResY : GSystemResolution.ResY;
Private_ResizeViewport( FVector2D( Viewport->ViewportRect.Right, Viewport->ViewportRect.Bottom ), *Viewport, bFullscreen );
}
}
void FSlateD3DRenderer::RequestResize( const TSharedPtr<SWindow>& InWindow, uint32 NewSizeX, uint32 NewSizeY )
{
const bool bFullscreen = IsViewportFullscreen( *InWindow );
Private_ResizeViewport( InWindow.ToSharedRef(), NewSizeX, NewSizeY, bFullscreen );
}
