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Re: [tor-bugs] #30537 [Applications/Tor Browser]: WebGL fingerprint is different between Windows versions (and compared to non-Windows OSes)

#30537: WebGL fingerprint is different between Windows versions (and compared to
non-Windows OSes)
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting, tbb-             |  Actual Points:
  fingerprinting-os                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by cypherpunks):

 So, that's due to Firefox doesn't recognize Win 10 renderer:
 {{{
 D3D11_COMPOSITING Blocklisted; failure code
 BLOCKLIST_FEATURE_FAILURE_UNKNOWN_DEVICE_VENDOR
 }}}
 that changes the fingerprint and triggers:
 {{{
 Error: WebGL warning: Disallowing antialiased backbuffers due to
 blacklisting.  canvas.js:180:11
 }}}
 Forcing MSAA fixes that error, but doesn't change the fingerprint.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30537#comment:10>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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