Re: Why run xserver on the OpenGL API?

On Tue, Nov 25, 2003 at 02:26:54PM -0800, Keith Packard wrote:
> 
> 
> I thought that was implicit in the plan to write a GL backend for the
> existing X server rendering infrastructure.  The idea is that all core X
> and Render acceleration would be done with GL function calls, and that for
> ease of porting the existing code, a dumb frame buffer could be accessed
> where necessary.
> 

Why does an opengl extension need to be written to provide the frame
buffer access? what do you need that you can't accomplish already with
glReadPixels () and glDrawPixels ()?

John