On 08/07/15 12:01, Chris Wilson wrote:
On Tue, Jul 07, 2015 at 01:42:47PM +0300, Martin Peres wrote:
On 06/07/15 19:43, Kenneth Graunke wrote:
On Monday, July 06, 2015 11:33:10 AM Chris Wilson wrote:
Rather than allocating a fresh page every time we clear a buffer, keep
that page around between invocations by tracking the last used offset
and only allocating a fresh page when we wrap.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
src/mesa/drivers/dri/i965/brw_meta_fast_clear.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
This looks okay to me. Do you have any performance data to justify the
extra complexity?
I actually get a negative performance improvement on a customer
benchmark (-1.3%). Could it be because we are waiting on the VBO at
some point?
What benchmark did you try to get a perf improvement?
For this something as simple and cpu bound as windowed glxgears:
14550 -> 15400 (+-30fps both sides).
-Chris
Thanks!
I re-run the tests on the same kernel (4.0.7-2-ARCH) and another one
(drm-intel-nighly-06-07-2015) and I can't reproduce the hit anymore...
The hit was there, visible over the 30 rounds of the test, so this is
weird. Let's just ignore this.
Martin
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
