[tbb-bugs] #13507 [Tor Browser]: webgl not working on new version of tor browser for windows

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Oct 23 07:41:35 UTC 2014

#13507: webgl not working on new version of tor browser for windows
     Reporter:  keith768     |      Owner:  tbb-team
         Type:  defect       |     Status:  new
     Priority:  normal       |  Milestone:
    Component:  Tor Browser  |    Version:
   Resolution:               |   Keywords:  tbb-usability
Actual Points:               |  Parent ID:
       Points:               |

Comment (by keith768):

 It does work on Firefox 31 ESR. I've also reproduced the problem on
 different windows versions (7, 8, 8.1...) and different hardware. So it's
 safe to assume it's not OS or hardware related.

 Under the "Graphics" section it indeed shows different information between
 Tor Browser and regular firefox:
  1. DirectWrite is false in Tor Browser
  2. "GPU Accelerated Windows" is "1/1 Direct3D 10" on FF and "0/1 Basic"
 on Tor browser.
  3. AzureCanvasBackend is skia on Tor Browser, direct2d on FF.
  4. AzureContentBackend is cairo on Tor Browser, direct2d on FF
  5. Most important of all, the line of "WebGL Renderer" is completely
 missing on Tor Browser.

 The rest of the section is identical (driver versions and all).

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13507#comment:3>
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