[15/20] WineD3D: Clean up drawprim a bit

[H. Verbeet]

On 14/01/07, Stefan Dösinger <stefan at codeweavers.com> wrote:
> > How about something like R2VB?
> I think we can implement R2VB if we want it(it is an ATI hack) by just setting
> a VBO as a render target. The extensions imply that this is supposed to work,
> although the performance isn't guaranted to be optimal. I think the biggest
> issue with R2VB is Alexandre :-/
>
Well, you can't set a VBO as rendertarget directly, but you can copy
the FBO data into a PBO, which you can bind as a VBO. That's pretty
legitimate in OpenGL. But I was wondering how hard it would be to use
something like that for ProcessVertices.