[Bug 79448] New: Texture corruption when one context gets used on multiple windows

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79448

          Priority: medium
            Bug ID: 79448
          Assignee: idr at freedesktop.org
           Summary: Texture corruption when one context gets used on
                    multiple windows
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: mgraesslin at kde.org
          Hardware: Other
            Status: NEW
           Version: 10.1
         Component: Drivers/DRI/i965
           Product: Mesa

Created attachment 100153
  --> https://bugs.freedesktop.org/attachment.cgi?id=100153&action=edit
Apitrace showing the problem

Downstream bug with a qml test:
https://bugreports.qt-project.org/browse/QTBUG-39182

This happens if there are:
* one context
* at least two windows
* a texture used in each window
* texture loaded for each window in same frame

Attached is an apitrace run of the example and a corrupted texture.

If you need any more information from me, please let me know. This highly
affects the upcoming Plasma release and we will try as best as possible to help
fix this bug.

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