https://bugs.freedesktop.org/show_bug.cgi?id=87886
Bug ID: 87886
Summary: constant fps drops with Intel and Radeon on Source
games
Product: Mesa
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
Assignee: mesa-dev@lists.freedesktop.org
Reporter: stephane.travost...@gmail.com
I'm experiencing constant fps drops every few seconds with both intel and
radeon cards (the latter with DRI_PRIME=1) on Source games,
When using the intel card and INTEL_DEBUG=perf I see "recompiling fragment
shader" messages during drops, see http://pastebin.com/5zV9uuRb
This messages repeat every drop, and the games goes from the maximum 40fps for
a couple of seconds to ~10 fps for 3/4 seconds.
This happens with the radeon card too, and with
GALLIUM_HUD=fps,buffer-wait-time I see the latter parameter increasing to
around 5k during fps drops.
This happens with Counter Strike: Global Offensive and Left 4 Dead 2 (only
games available for testing), also when standing still in an empty black room.
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) -- SANDYBRIDGE
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] (rev ff)
OS Archlinux x86-64 + Linux 3.18
Mesa git version 67105.0c7f895
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