[Nouveau] [Bug 86356] New: [nv50] Graphical glitches in dota2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86356

            Bug ID: 86356
           Summary: [nv50] Graphical glitches in dota2
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: emil.l.velikov at gmail.com

Created attachment 109567
  --> https://bugs.freedesktop.org/attachment.cgi?id=109567&action=edit
Screen shot of the issue, from a trimmed trace

It seems that one of the dota2 updates over the last month or so introduced a
regression causing visual glitches as shown in the attached files.

Originally I've assumed to be a mesa regression, but it seems that's not the
case  - old, previously working mesa produces the same output.

MESA_EXTENSION_OVERRIDE=-GL_ARB_draw_elements_base_vertex makes no difference,
plus replaying a trace recorded on i965/snb (no issues there) exhibits the same
glitches.


Note: After trimming the trace some textures are not missing and the text
appears block. The trace plus a screenshot of a non-trimmed trace will follow
shortly.

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