Bug 94354 - R9285 Unigine Valley perf regression since radeonsi: use re-Z
Summary: R9285 Unigine Valley perf regression since radeonsi: use re-Z
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/radeonsi (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
QA Contact: Default DRI bug account
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-03-01 17:35 UTC by Andy Furniss
Modified: 2016-10-16 12:55 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Andy Furniss 2016-03-01 17:35:00 UTC 
Haven't tested other apps/settings, but on R9285 Unigine Valley on highest settings, 8x AA, 1920x1080 fullscreen is slower after 

d0f3b524cdb8489a6872ba3639a13813de221fc2

radeonsi: use re-Z
This can increase perf for shaders that kill pixels (kill, alpha-test,
alpha-to-coverage).

Before

FPS: 27.2
Score: 1139
Min FPS: 13.5
Max FPS: 52.0

After 

FPS: 22.6
Score: 946
Min FPS: 11.7
Max FPS: 47.1
Comment 3 Marek Olšák 2016-10-14 16:55:10 UTC 
Thanks and sorry for missing this bug.
Comment 4 Andy Furniss 2016-10-16 12:55:18 UTC 
NP, I should have bumped it long ago.

I was suprised no one else noticed - I guess phoronix tests use lower settings or something.

Thanks for all your and others work on perf.

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