public void CopyRegion(GraphicsResource source, int sourceSubresource, ResourceRegion?sourecRegion, GraphicsResource destination, int destinationSubResource, int dstX = 0, int dstY = 0, int dstZ = 0) { if (source == null) { throw new ArgumentNullException("source"); } if (destination == null) { throw new ArgumentNullException("destination"); } var nullableSharpDxRegion = new SharpDX.Direct3D11.ResourceRegion?(); if (sourecRegion.HasValue) { var value = sourecRegion.Value; nullableSharpDxRegion = new SharpDX.Direct3D11.ResourceRegion(value.Left, value.Top, value.Front, value.Right, value.Bottom, value.Back); } NativeDeviceContext.CopySubresourceRegion(source.NativeResource, sourceSubresource, nullableSharpDxRegion, destination.NativeResource, destinationSubResource, dstX, dstY, dstZ); }