/// <summary>
/// Creates Direct3D 9 texture from the specified Direct3D 11 texture.
/// (The content is shared between the devices.)
/// </summary>
/// <param name="renderTarget">The Direct3D 11 texture.</param>
/// <returns>The Direct3D 9 texture.</returns>
/// <exception cref="ArgumentException">
/// The Direct3D 11 texture is not a shared resource, or the texture format is not
/// supported.
/// </exception>
public Texture GetSharedTexture(Texture2D renderTarget)
{
ThrowIfDisposed();
if (renderTarget == null)
return null;
IntPtr handle = renderTarget.GetSharedHandle();
if (handle == IntPtr.Zero)
throw new ArgumentException("Unable to access resource. The texture needs to be created as a shared resource.", "renderTarget");
Format format;
switch (renderTarget.Format)
{
case SurfaceFormat.Bgr32:
format = Format.X8R8G8B8;
break;
case SurfaceFormat.Bgra32:
format = Format.A8R8G8B8;
break;
default:
throw new ArgumentException("Unexpected surface format. Supported formats are: SurfaceFormat.Bgr32, SurfaceFormat.Bgra32.", "renderTarget");
}
return new Texture(_device, renderTarget.Width, renderTarget.Height, 1, Usage.RenderTarget, format, Pool.Default, ref handle);
}
