[Mesa-dev] [PATCH] glx/dri3: Port LIBGL_SHOW_FPS=1 code from DRI2 to DRI3.

Kenneth Graunke kenneth at whitecape.org
Tue Oct 28 13:26:06 PDT 2014

On Tuesday, October 28, 2014 11:12:40 AM Keith Packard wrote:
> Kenneth Graunke <kenneth at whitecape.org> writes:
> > The code is cut-and-pasted from dri2_glx.c; we can't quite share it
> > because we have to use different structures.
> It might be fun to use the UST value provided in the
> PRESENT_COMPLETE_NOTIFY event instead of a local gettimeofday call? That
> way you'd get the presentation time, rather than the time of the swap?
> Otherwise, this all seems fine to me
> Reviewed-by: Keith Packard <keithp at keithp.com>

I had been wondering if we could use that somehow.

Is UST expressed in a particular unit?  I thought it was just "monotonically 
increasing" but otherwise meaningless.  At which point, our FPS would be 
"frames per...something?" :)

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