1193695 - remove obsolete preference "gfx.prefer-mesa-llvmpipe" (and close related bugs to avoid confusion)

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Ismail Khoffi]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0
Build ID: 20150624141335

Steps to reproduce:

The preference "gfx.prefer-mesa-llvmpipe" is never used. 
It was introduced with bug 731836 but the code which made use of it was removed with bug 958368.
Currently the only occurence of  "gfx.prefer-mesa-llvmpipe" is in source/modules/libpref/init/all.js in line 699 (see http://lxr.mozilla.org/mozilla-aurora/source/modules/libpref/init/all.js#699 or grep/search for it yourself).


Actual results:

The preference has no impact and gives the user the impression, that he/she can influence firefox to use llvmpipe by setting it to true (which was the case but is'n anymore since bug 958368 was closed).


Expected results:

Either remove "gfx.prefer-mesa-llvmpipe" or reintroduce the code (see bug 958368) that uses this pref. 
In the first case some bugs should be closed/reopened to avoid confusion: bug 731983 (I would love to work on this addon btw), bug 958368, 731836

(Additionally I would be very glad, if someone could clarify how to officially (?) force firefox/ANGLE to use software-rendering as a fallback. I've managed to do so by (re)placing a dll (in the appropriate dir) and setting "webgl.disable-angle" and "webgl.force-enabled" to true. But this is out of the scope of this bug, I think? Thanks, though.)

Comment 1

[Milan Sreckovic [:milan] (needinfo for best results)]

Attachment: Bug 1193695: Removed unused preference.

Review commit: https://reviewboard.mozilla.org/r/93778/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/93778/

Comment 2

[Lee Salzman [:lsalzman]]

Comment on attachment 8811856 [details]
Bug 1193695: Removed unused preference.

https://reviewboard.mozilla.org/r/93778/#review93932

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9812afab78b2
Removed unused preference. r=lsalzman

Comment 4

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/9812afab78b2

Comment 5

[areya]

https://hg.mozilla.org/mozilla-central/rev/9812afab78b2