i965: Re-enable Z16 on Gen8+.
authorKenneth Graunke <kenneth@whitecape.org>
Wed, 22 Oct 2014 15:58:59 +0000 (08:58 -0700)
committerKenneth Graunke <kenneth@whitecape.org>
Tue, 4 Nov 2014 19:39:18 +0000 (11:39 -0800)
commit6107557f8fa34e0b7191813792be43eaa03aed19
tree270bf1d08c302860ed27066d71806e6ce1c94adc
parent7423cc891b4d6fcc63bfeb79cc1d711ce81122bd
i965: Re-enable Z16 on Gen8+.

Improves performance in GLBenchmark 2.7 TRex by 3.88889% +/- 0.336383%
(n=80) at 1280x720 on Broadwell GT3.  Together with the previous patch,
it improves performance by 5.42738% +/- 0.541971% (n=10) at 1920x1080.

Note that without the PMA stall fix, this would instead decrease
performance by 22%.

v2: Update comment (noticed by Kristian Høgsberg).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
src/mesa/drivers/dri/i965/brw_surface_formats.c