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Issue 691601 link

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Issue metadata

Status: Assigned
Owner:
Last visit > 30 days ago
Cc:
EstimatedDays: ----
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Pri: 3
Type: Bug



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Accelerated canvas is slow on Mali-4 Linux

Project Member Reported by halliwell@chromium.org, Feb 13 2017

Issue description

Chrome Version: 56
OS: Linux

For a long time, accelerated canvas was disabled on Linux for stability reasons, and then enabled a few months back here: https://codereview.chromium.org/2254293002

With that CL, we found canvas performance dropped significantly (e.g. ~25% score drop on CanvasMark test) with Mali-4* GPUs.
 
Description: Show this description
Cc: gfhuang@chromium.org
Also flashes black frames randomly according to gfhuang@
Project Member

Comment 3 by bugdroid1@chromium.org, Feb 13 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1ffa882da6a9795878cbdd6bba4542d0158298a9

commit 1ffa882da6a9795878cbdd6bba4542d0158298a9
Author: halliwell <halliwell@chromium.org>
Date: Mon Feb 13 20:10:55 2017

Blacklist Mali-4* on Linux for accelerated 2d canvas

Accelerated canvas is slow with this GPU on Linux.  Blacklist for
now.

BUG=691601
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2697613002
Cr-Commit-Position: refs/heads/master@{#450060}

[modify] https://crrev.com/1ffa882da6a9795878cbdd6bba4542d0158298a9/gpu/config/software_rendering_list_json.cc

Project Member

Comment 4 by bugdroid1@chromium.org, May 3 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/12e5f8a1b2d94ef823b88a01f5798a0cc8133a9b

commit 12e5f8a1b2d94ef823b88a01f5798a0cc8133a9b
Author: halliwell <halliwell@chromium.org>
Date: Wed May 03 20:40:03 2017

Allow accelerated canvas on Mali Linux

We blacklisted this before, but it seems at least on some systems,
it's fast and works fine.  We're going to ask any TVs having
problems still to just use the command line switch to disable.

BUG=691601
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2830403002
Cr-Commit-Position: refs/heads/master@{#469109}

[modify] https://crrev.com/12e5f8a1b2d94ef823b88a01f5798a0cc8133a9b/gpu/config/software_rendering_list.json

Status: Assigned (was: Untriaged)

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