[Mesa-dev] [RFC] gallium/auxiliary: u_primconvert for GL_QUADS

[Brian Paul]

On 10/24/2013 11:44 AM, Rob Clark wrote:
> From: Rob Clark <robclark at freedesktop.org>
>
> A utility to turn quads into tri's + index buffer, which can be used by
> drivers for hardware which does not natively support quads.
>
> Signed-off-by: Rob Clark <robclark at freedesktop.org>

We already have some code for this.  Check out the u_indices.c code. 
The svga driver uses this to convert QUADS into indexed triangles, etc. 
  Keith wrote the original code so I don't know the details but I at 
least added some comments a while back.

-Brian