Re: [Mesa3d-dev] NULL renderer for Mesa?

[Brian P. <br...@tu...>]

Kendall Bennett wrote:
> Keith Whitwell <ke...@tu...> wrote:
> 
> 
>>Nothing like this currently exists.  However, I would have thought
>>a reasonable profiler could tell you what is going on without
>>resorting to this? 
> 
> 
> The profiler tells us that the performance bottleneck is squaring in the  
> display list processing code,

What do you mean by squaring?  The square of what?


> but we would like to find out just how much 
> overhead is in there. If we had a NULL renderer to use, it would allow us 
> to performance tune just the display list code and not worry about the 
> back end initially.

It shouldn't be hard to do that.  I don't know if you're using hardware or 
software T&L or what, but you should be able to find a spot to short-circuit 
the point/line/triangle functions or vertex-buffer renderer.

-Brian