[Bug 98252] IvyBridge, DRI3 - Opening an image with mpv -vo opengl only draws part of the image

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98252

            Bug ID: 98252
           Summary: IvyBridge, DRI3 - Opening an image with mpv -vo opengl
                    only draws part of the image
           Product: Mesa
           Version: 12.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: tod.jackson at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 127293
  --> https://bugs.freedesktop.org/attachment.cgi?id=127293&action=edit
dmesg

For a few years I've observed an issue with DRI3 loading images (any format)
with mpv -vo opengl where only maybe 10-20% of the top left corner is drawn,
and the rest is black. If it's a playlist then the second and subsequent images
are drawn correctly, after the initial window was already created.

It's present with xf86-video-intel and modesetting, and is fixed with
LIBGL_DRI3_DISABLE=1. 

There are similar issues reported such as "blank, black elements" or "gtk
corruption" but these seem to have been reported fixed on some hardware or just
hard to reproduce, I guess. Since I seem to have some insomnia I've decided to
finally report this. ;)

I'll attach a few relevant things in a moment. Also, sorry if I've
miscategorized this.

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