Bug 66921 - [r300g] Heroes of Newerth: HiZ related corruption
[r300g] Heroes of Newerth: HiZ related corruption
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/r300
Other All
: medium normal
Assigned To: Default DRI bug account
: regression
Depends on:
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Reported: 2013-07-15 12:42 UTC by Pavel Ondračka
Modified: 2013-07-15 21:55 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

screenshot (144.68 KB, image/jpeg)
2013-07-15 12:42 UTC, Pavel Ondračka

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Description Pavel Ondračka 2013-07-15 12:42:30 UTC
Created attachment 82440 [details]

In Heroes of Newerth, there is massive black corruption over top half of screen anytime, when you move mouse over some game objects, like buildings. This is HiZ related and goes away when RADEON_DEBUG=nohiz is set. 
I also found out that it goes away completely when I revert
commit 631c631cbf5b7e84e42a7cfffa1c206d63143370
Author: Marek Olšák <maraeo@gmail.com>
Date:   Fri May 13 02:26:08 2011 +0200

    r300g: allow HiZ with a 16-bit zbuffer

HoN is free to play, however I can make an apitrace if needed.

GPU:RV530 (R520 also affected)
Mesa: b616d0166158872a135153e27c391424fe655117
Kernel: 3.9.4-200.fc18.i686
libdrm: f8f1f6e37ae2c3eb4a9c045ba3294b3ccf926c07
Comment 1 Marek Olšák 2013-07-15 21:55:53 UTC
Okay, I have reverted the commit.