[SDL] Real-time Video Overlay

[Solra Bizna]

On Mon, Feb 18, 2008 at 8:38 AM, Jonathan Haws
<Jonathan.Haws at sdl.usu.edu> wrote:
>  Since you mention the GPU I have another, related question.  I was intending on using
> the GPU to handle most of the processing.  The idea was that the GPU would hold the
> frame in memory and I would send my overlay to it.  At that point the GPU would mix the
> overlay and the frame and output it to the LCD.  Is that viable?  I would think that method
> would give the lowest latency.  Also, I wouldn't even have to have it overlay every frame -
> even just every other or every third.  Anyway, if I did that would SDL still work like that or
> would I be on my own?
This is viable, but you should use OpenGL or DirectX for it. SDL
doesn't accelerate enough of the pipeline consistently enough for
this.
-:sigma.SB