[Bug 99813] F1 2015 rendering broken at medium quality

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99813

            Bug ID: 99813
           Summary: F1 2015 rendering broken at medium quality
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: eero.t.tamminen at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 129595
  --> https://bugs.freedesktop.org/attachment.cgi?id=129595&action=edit
Race track aerial view (before race start)

Test setup:
- SKL GT2
- Ubuntu 16.04
- Today's Mesa Git
- Steam & F1 2015 game installed


Use-case:
- Start F1 2015 with the latest Mesa version
- From advanced graphics options, select "medium" quality
- Restart F1 2015 so that graphics options take effect
- Start Quick Race

Actual outcome:
- Most of the game graphics are missing, or white.  See attached screenshots

Notes:
- Only warning I see, is Mesa SSO warning about things potentially not being GL
ES 3.1 compatible, although game uses GL 4.5 context...
- With "high" quality, graphics are visible, but many screen elements flicker
- With Mesa 11.2 (i.e. GL 3.3), objects are visible with "medium" quality, but
flicker like with Mesa git at "high" quality, and game is much more slower
- DiRT Showdown, which uses earlier 2.0 version of EGO engine instead of 3.0,
looks fine

I can provide apitrace of the issue if needed.

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