/// <summary>
/// Checks if given DirectX12 backend is supported.
/// </summary>
/// <returns>True if supported, false otherwise.</returns>
public static bool IsSupported()
{
if (s_isSupported.HasValue)
{
return(s_isSupported.Value);
}
if (Platform.PlatformType != PlatformType.Windows &&
Platform.PlatformType != PlatformType.UWP &&
Platform.PlatformType != PlatformType.XboxOne)
{
s_isSupported = false;
return(false);
}
if (CreateDXGIFactory1(out IDXGIFactory1 tempDXGIFactory1).Failure)
{
s_isSupported = false;
return(false);
}
var adapters = tempDXGIFactory1.EnumAdapters1();
for (var i = 0; i < adapters.Length; i++)
{
var adapter = adapters[i];
var desc = adapter.Description1;
// Don't select the Basic Render Driver adapter.
if ((desc.Flags & AdapterFlags.Software) != AdapterFlags.None)
{
continue;
}
if (ID3D12Device.IsSupported(adapter, FeatureLevel.Level_11_0))
{
s_isSupported = true;
return(true);
}
}
s_isSupported = true;
return(true);
}
public static bool IsSupported()
{
return(ID3D12Device.IsSupported(null, FeatureLevel.Level_11_0));
}
public static bool IsSupported()
{
return(ID3D12Device.IsSupported(null, Vortice.DirectX.Direct3D.FeatureLevel.Level_11_0));
}
protected Application(bool useDirect3D12)
{
_wndProc = ProcessWindowMessage;
var wndClassEx = new WNDCLASSEX
{
Size = Unsafe.SizeOf <WNDCLASSEX>(),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW | WindowClassStyles.CS_OWNDC,
WindowProc = _wndProc,
InstanceHandle = HInstance,
CursorHandle = LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
BackgroundBrushHandle = IntPtr.Zero,
IconHandle = IntPtr.Zero,
ClassName = WndClassName,
};
var atom = RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new InvalidOperationException(
$"Failed to register window class. Error: {Marshal.GetLastWin32Error()}"
);
}
Window = new Window("Vortice", 800, 600);
if (useDirect3D12 &&
!ID3D12Device.IsSupported(null, FeatureLevel.Level_11_0))
{
useDirect3D12 = false;
}
var debugFactory = false;
#if DEBUG
if (useDirect3D12)
{
if (D3D12GetDebugInterface <ID3D12Debug>(out var debug).Success)
{
debug.EnableDebugLayer();
debugFactory = true;
}
}
#endif
if (useDirect3D12)
{
if (CreateDXGIFactory2(debugFactory, out IDXGIFactory4 dxgiFactory4).Failure)
{
throw new InvalidOperationException("Cannot create IDXGIFactory4");
}
_dxgiFactory = dxgiFactory4;
}
else
{
if (CreateDXGIFactory2(debugFactory, out _dxgiFactory).Failure)
{
throw new InvalidOperationException("Cannot create IDXGIFactory4");
}
}
if (useDirect3D12)
{
Debug.Assert(D3D12CreateDevice(null, FeatureLevel.Level_11_0, out _d3d12Device).Success);
_d3d12CommandQueue = _d3d12Device.CreateCommandQueue(new CommandQueueDescription(CommandListType.Direct, CommandQueuePriority.Normal));
}
else
{
var featureLevels = new FeatureLevel[]
{
FeatureLevel.Level_11_1,
FeatureLevel.Level_11_0
};
Debug.Assert(ID3D11Device.TryCreate(
null,
DriverType.Hardware,
DeviceCreationFlags.BgraSupport,
featureLevels,
out _d3d11Device,
out _d3d11DeviceContext).Success);
}
var swapChainDesc = new SwapChainDescription1
{
BufferCount = FrameCount,
Width = Window.Width,
Height = Window.Height,
Format = Format.B8G8R8A8_UNorm,
Usage = Vortice.Usage.RenderTargetOutput,
SwapEffect = SwapEffect.FlipDiscard,
SampleDescription = new SampleDescription(1, 0)
};
SwapChain = DXGIFactory.CreateSwapChainForHwnd(_d3d12CommandQueue, Window.Handle, swapChainDesc);
DXGIFactory.MakeWindowAssociation(Window.Handle, WindowAssociationFlags.IgnoreAltEnter);
if (useDirect3D12)
{
SwapChain3 = SwapChain.QueryInterface <IDXGISwapChain3>();
_frameIndex = SwapChain3.GetCurrentBackBufferIndex();
}
_rtvHeap = _d3d12Device.CreateDescriptorHeap(new DescriptorHeapDescription(DescriptorHeapType.RenderTargetView, FrameCount));
_rtvDescriptorSize = _d3d12Device.GetDescriptorHandleIncrementSize(DescriptorHeapType.RenderTargetView);
// Create frame resources.
{
var rtvHandle = _rtvHeap.GetCPUDescriptorHandleForHeapStart();
// Create a RTV for each frame.
_renderTargets = new ID3D12Resource[FrameCount];
for (var i = 0; i < FrameCount; i++)
{
_renderTargets[i] = SwapChain.GetBuffer <ID3D12Resource>(i);
_d3d12Device.CreateRenderTargetView(_renderTargets[i], null, rtvHandle);
rtvHandle += _rtvDescriptorSize;
}
}
_commandAllocator = _d3d12Device.CreateCommandAllocator(CommandListType.Direct);
_commandList = _d3d12Device.CreateCommandList(CommandListType.Direct, _commandAllocator);
_commandList.Close();
// Create synchronization objects.
_d3d12Fence = _d3d12Device.CreateFence(0);
_fenceValue = 1;
_fenceEvent = new AutoResetEvent(false);
}