[Intel-gfx] [PATCH] intel: Add support for (possibly) unsynchronized maps.
kenneth at whitecape.org
Sun Feb 26 12:28:09 PST 2012
On 02/25/2012 03:00 AM, Daniel Vetter wrote:
> On Fri, Feb 24, 2012 at 07:53:22PM -0800, Eric Anholt wrote:
>> This improves the performance of Mesa's GL_MAP_UNSYNCHRONIZED_BIT path
>> in GL_ARB_map_buffer_range. Improves Unigine Tropics performance at
>> 1024x768 by 2.06236% +/- 0.50272% (n=11).
> A few questions:
> - iirc Ben's non-blocking stuff also worked for non-llc machines - I guess
> you haven't looked into this because we don't have a non-llc platform
> that runs ungine?
Tropics works on Ironlake, too, it's just slow. Haven't tried earlier.
> - in my pwrite experience, writing through cpu maps beats writing through
> the gtt on llc machines. This has the added benefit that it reduces
> pressure on the mappable gtt. Have you tried that, too?
> Cheers, Daniel
More information about the Intel-gfx