// Allocate all memory resources that change on a window SizeChanged event.
protected virtual void CreateWindowSizeDependentResources()
{
_windowBounds = _window.Bounds;
if (_swapChain != null)
{
_swapChain.ResizeBuffers(2, 0, 0, DXGI.Format.B8G8R8A8_UNorm, 0);
}
else
{
var swapChainDesc = new DXGI.SwapChainDescription1()
{
Width = 0,
Height = 0,
Format = DXGI.Format.B8G8R8A8_UNorm,
Stereo = false,
Usage = DXGI.Usage.RenderTargetOutput,
BufferCount = 2,
Scaling = DXGI.Scaling.None,
SwapEffect = DXGI.SwapEffect.FlipSequential,
SampleDescription = new DXGI.SampleDescription { Count = 1, Quality = 0 },
Flags = 0
};
_swapChain = _window.CreateSwapChain(_device, ref swapChainDesc);
// gotta figure out some reasonable way of doing this
// dxgiDevice.MaximumFrameLatency = 1;
D3D11.Texture2D backBuffer = _swapChain.GetBackBuffer<D3D11.Texture2D>(0);
_renderTargetView = new D3D11.RenderTargetView(_device, backBuffer);
// Cache the rendertarget dimensions in our helper class for convenient use.
_renderTargetSize.Width = backBuffer.Description.Width;
_renderTargetSize.Height = backBuffer.Description.Height;
// Create a descriptor for the depth/stencil buffer.
var depthStencilDesc = new D3D11.Texture2DDescription
{
Format = DXGI.Format.D24_UNorm_S8_UInt,
Width = backBuffer.Description.Width,
Height = backBuffer.Description.Height,
ArraySize = 1,
MipLevels = 1,
BindFlags = D3D11.BindFlags.DepthStencil,
SampleDescription = new DXGI.SampleDescription { Count = 1 }
};
// Allocate a 2-D surface as the depth/stencil buffer.
var depthStencil = new D3D11.Texture2D(_device, depthStencilDesc);
// Create a DepthStencil view on this surface to use on bind.
_depthStencilView = new D3D11.DepthStencilView(_device, depthStencil,
new D3D11.DepthStencilViewDescription { Dimension = D3D11.DepthStencilViewDimension.Texture2D });
// Create a viewport descriptor of the full window size.
var viewPort = new D3D11.Viewport
{
TopLeftX = 0.0f,
TopLeftY = 0.0f,
Width = backBuffer.Description.Width,
Height = backBuffer.Description.Height
};
// Set the current viewport using the descriptor.
_deviceContext.Rasterizer.SetViewports(viewPort);
}
}
public virtual void CreateWindowSizeDependentResources()
{
var resource = _renderTargetview.Resource;
using (var texture2D = new Texture2D(resource.NativePointer))
{
var currentWidth = (int) _renderTargetSize.Width;
var currentHeight = (int) _renderTargetSize.Height;
if (currentWidth != texture2D.Description.Width &&
currentHeight != texture2D.Description.Height)
{
_renderTargetSize.Width = texture2D.Description.Width;
_renderTargetSize.Height = texture2D.Description.Height;
ComObject.Dispose(ref _depthStencilView);
using (var depthTexture = new Texture2D(
_device,
new Texture2DDescription()
{
Width = (int) _renderTargetSize.Width,
Height = (int) _renderTargetSize.Height,
ArraySize = 1,
BindFlags = BindFlags.DepthStencil,
CpuAccessFlags = CpuAccessFlags.None,
Format = SharpDX.DXGI.Format.D24_UNorm_S8_UInt,
MipLevels = 1,
OptionFlags = ResourceOptionFlags.None,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
Usage = ResourceUsage.Default
}))
_depthStencilView = new DepthStencilView(_device, depthTexture);
}
}
_windowBounds.Width = _renderTargetSize.Width;
_windowBounds.Height = _renderTargetSize.Height;
// Create a viewport descriptor of the full window size.
var viewport = new SharpDX.Direct3D11.Viewport(0, 0, (float)_renderTargetSize.Width, (float)_renderTargetSize.Height );
_deviceContext.Rasterizer.SetViewports(viewport);
}
