[tbb-bugs] #18215 [Tor Browser]: TBB should use software backend for canvas rendering

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Feb 2 16:13:05 UTC 2016

#18215: TBB should use software backend for canvas rendering
     Reporter:  cypherpunks  |      Owner:  tbb-team
         Type:  defect       |     Status:  new
     Priority:  Medium       |  Milestone:
    Component:  Tor Browser  |    Version:
     Severity:  Normal       |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |    Sponsor:
 If TBB would use a common software rendering backend for canvas, no
 fingerprinting threat would exist. Font differences can already be
 detected via other means.

 Firefox should have the necessary functionality. It can use software
 rendering for buggy/blacklisted hardware and hardware that lacks required
 acceleration features.

 This would resolve issues like this:

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18215>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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