public static byte[] ToPixelData(this Image image, TextureFormat fmt) { switch (fmt) { case D3DFMT_A8R8G8B8: return(image.ToPixelData <Bgra32>(fmt)); case D3DFMT_L8: return(image.ToPixelData <L8>(fmt)); case D3DFMT_A8: return(image.ToPixelData <A8>(fmt)); case D3DFMT_A1R5G5B5: return(image.ToPixelData <Bgra5551>(fmt)); case D3DFMT_A8B8G8R8: return(image.ToPixelData <Rgba32>(fmt)); } var uncompressed = image.ToPixelData <Rgba32>(D3DFMT_A8B8G8R8); var compressed = new byte[fmt.Size(image.Width, image.Height)]; if (!FuckDX.encode(uncompressed, fmt, 2, image.Width, image.Height, compressed)) { throw new NotSupportedException( $"Failed to encode: I guess {fmt} is not supported :( Mention @Kng if you care" ); } return(compressed); }