Bug 94354

Summary:	R9285 Unigine Valley perf regression since radeonsi: use re-Z
Product:	Mesa	Reporter:	Andy Furniss <adf.lists>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:	Default DRI bug account <dri-devel>
Severity:	normal
Priority:	medium	CC:	johan.gardhage
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

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 1 russianneuromancer 2016-10-13 13:15:54 UTC

https://lists.freedesktop.org/archives/mesa-dev/2016-October/131759.html

Comment 2 Andy Furniss 2016-10-13 21:34:17 UTC

Fixed

https://cgit.freedesktop.org/mesa/mesa/commit/?id=e12c1cab5d571c215f65bd9f3fc1629c090ed948

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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