[tbb-bugs] #16005 [Tor Browser]: webgl.min_capability_mode might be too minimal

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue May 12 09:27:26 UTC 2015

#16005: webgl.min_capability_mode might be too minimal
 Reporter:  mikeperry                            |          Owner:  tbb-
     Type:  defect                               |  team
 Priority:  normal                               |         Status:  new
Component:  Tor Browser                          |      Milestone:
 Keywords:  tbb-fingerprinting, tbb-usability-   |        Version:
  website                                        |  Actual Points:
Parent ID:                                       |         Points:
 We set webgl.min_capability_mode in an effort to resist fingerprinting.
 Unfortunately, it seems minimal mode might be a little too minimal. It
 completely breaks the HexGL racing game (at http://hexgl.bkcore.com/play).
 We should try to figure out what exactly about minimal mode is breaking
 this game, and make a guess as to if it is really a fingerprinting issue.

 Given that my 4 year old laptop with Intel built-in graphics was
 completely capable of playing this game with this pref unset, it seems
 that maybe webgl.min_capability_mode is a little too minimal, and could be
 altered to represent a slightly less restrictive set of capabilities
 without much fingerprinting risk.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16005>
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