[Bug 92788] [IVB/HSW/BYT/BDW/BSW Bisected ]SynMark2 "OglShMapPcf" cannot run as image validation failed
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Nov 2 19:42:02 PST 2015
https://bugs.freedesktop.org/show_bug.cgi?id=92788
Bug ID: 92788
Summary: [IVB/HSW/BYT/BDW/BSW Bisected ]SynMark2 "OglShMapPcf"
cannot run as image validation failed
Product: Mesa
Version: unspecified
Hardware: All
OS: Linux (All)
Status: NEW
Severity: major
Priority: high
Component: Drivers/DRI/i965
Assignee: idr at freedesktop.org
Reporter: yex.tian at intel.com
QA Contact: intel-3d-bugs at lists.freedesktop.org
CC: cwabbott0 at gmail.com, eero.t.tamminen at intel.com
Created attachment 119367
--> https://bugs.freedesktop.org/attachment.cgi?id=119367&action=edit
Xorg.0.log
System Environment:
Platform: IVB/HSW/BYT/BDW/BSW
Mesa: (master)b639ed2f1b170d1184c6d94c88c826c51ffc8726
Kernel: (drm-intel-nightly)d4f412886ec9694658ab17092c3f70569a0405f9
Bug detailed description:
--------------------------------------------------
SynMark2 "OglShMapPcf" cannot run as image validation failed.
It’s Mesa regression,by bisected, show the first bad mesa commit is 486268b.
commit 486268bdb03a36faf09d84e0458ff49dd1325c40
Author: Connor Abbott <cwabbott0 at gmail.com>
AuthorDate: Sat Jun 6 13:32:21 2015 -0400
Commit: Connor Abbott <cwabbott0 at gmail.com>
CommitDate: Fri Oct 30 02:19:00 2015 -0400
i965: always run the post-RA scheduler
Before, we would only do scheduling after register allocation if we
spilled, despite the fact that the pre-RA scheduler was only supposed to
be for register pressure and set the latencies of every instruction to
1. This meant that unless we spilled, which we rarely do, then we never
considered instruction latencies at all, and we usually never bothered
to try and hide texture fetch latency. Although a later commit removes
the setting the latency to 1 part, we still want to always run the
post-RA scheduler since it's able to take the false dependencies that
the register allocator creates into account, and it can be more
aggressive than the pre-RA scheduler since it doesn't have to worry
about register pressure at all.
Please see Xrog.
Reproduce steps:
----------------------------
1, xinit&
2, ./synmark2 OglShMapPcf
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