private void UpdateBackBuffer()
{
IDirect3DSurface surface = HolographicFrame.GetRenderingParameters(HolographicFrame.CurrentPrediction.CameraPoses[0]).Direct3D11BackBuffer;
IDirect3DDxgiInterfaceAccess surfaceDxgiInterfaceAccess = surface as IDirect3DDxgiInterfaceAccess;
IntPtr resource = surfaceDxgiInterfaceAccess.GetInterface(ID3D11Resource);
if (backBuffer == null || backBuffer.NativeResource.NativePointer != resource)
{
// Clean up references to previous resources.
backBuffer?.Dispose();
LeftEyeBuffer?.Dispose();
RightEyeBuffer?.Dispose();
// This can change every frame as the system moves to the next buffer in the
// swap chain. This mode of operation will occur when certain rendering modes
// are activated.
Texture2D d3DBackBuffer = new Texture2D(resource);
backBuffer = new Texture(GraphicsDevice).InitializeFromImpl(d3DBackBuffer, false);
LeftEyeBuffer = backBuffer.ToTextureView(new TextureViewDescription()
{
ArraySlice = 0, Type = ViewType.Single
});
RightEyeBuffer = backBuffer.ToTextureView(new TextureViewDescription()
{
ArraySlice = 1, Type = ViewType.Single
});
}
Description.BackBufferFormat = backBuffer.Format;
Description.BackBufferWidth = backBuffer.Width;
Description.BackBufferHeight = backBuffer.Height;
}
public static Texture ToTextureView(this Texture texture, ViewType type, int arraySlice, int mipLevel)
{
var viewDescription = texture.ViewDescription;
viewDescription.Type = type;
viewDescription.ArraySlice = arraySlice;
viewDescription.MipLevel = mipLevel;
return(texture.ToTextureView(viewDescription));
}
/// <summary>
/// Gets a view on this depth stencil texture as a readonly depth stencil texture.
/// </summary>
/// <returns>A new texture object that is bouded to the requested view.</returns>
public static Texture ToDepthStencilReadOnlyTexture(this Texture texture)
{
if (!texture.IsDepthStencil)
{
throw new NotSupportedException("This texture is not a valid depth stencil texture");
}
var viewDescription = texture.ViewDescription;
viewDescription.Flags = TextureFlags.DepthStencilReadOnly;
return(texture.ToTextureView(viewDescription));
}
