Bug 111631 - HSW. Tropico 6 and SuperTuxKart have shadows flickering
Summary: HSW. Tropico 6 and SuperTuxKart have shadows flickering
Status: NEW
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other All
: not set not set
Assignee: Intel 3D Bugs Mailing List
QA Contact: Intel 3D Bugs Mailing List
Depends on:
Reported: 2019-09-10 10:28 UTC by Denis
Modified: 2019-09-16 14:57 UTC (History)
0 users

See Also:
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i915 features:


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Description Denis 2019-09-10 10:28:19 UTC
According to Danylo's investigations, he found out that shadows flickering in the game are related to the same issue with shadows, reported here https://bugs.freedesktop.org/show_bug.cgi?id=110395
But now there is impossible to reproduce that problem in Supertuxcart. I re-checked Tropico and found out, that flickering is still actual for the game. More over - patch, maiden for tuxcart - fixes it => https://gitlab.freedesktop.org/mesa/mesa/merge_requests/660

Attaching apitace for the game => https://drive.google.com/open?id=1sYaMbbZLrIsB4GItKdty6wzYmJ0BDN1i
(pay attention to the shadows under the trees, all other "flickers" not relate to current discussion)
Comment 1 Paul 2019-09-10 14:26:37 UTC
I've checked the issue on the BSW (Fedora 29, kernel 5.1.6) with mesa 18.3.6 and the latest master version - no flickers in the trace for both versions.

I'll check the issue on the BDW and post results here.
Comment 2 Paul 2019-09-12 12:38:34 UTC
I've finally rechecked the issue on the BDW (Intel® HD Graphics 5500) with system mesa 19.0.6 and the latest master version - didn't see any flickers.
Comment 3 Paul 2019-09-16 12:06:32 UTC
Also, the patch fixes flickers of trees in Tropico 6 on the HSW (Intel® HD Graphics 4600).
Comment 4 Paul 2019-09-16 14:56:38 UTC
Sorry for the my useless comment higher.

Also, the issue from https://bugs.freedesktop.org/show_bug.cgi?id=110395 is actual for HSW.
And it also fixes via Danylo's patch.

Could anybody can make these checks on HSW also? Trace for the tropico - https://drive.google.com/open?id=1sYaMbbZLrIsB4GItKdty6wzYmJ0BDN1i. 
Trace for tuxcart - https://drive.google.com/open?id=1hTRS3tgBuSOSNiFGoy7JaLVKkVeNmwb0

With patch and without patch

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