Bug 93318 - ElCap: OpenGL widget in notebook page stays in front
Summary: ElCap: OpenGL widget in notebook page stays in front
Status: NEW
Alias: None
Product: XQuartz
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: 2.7.8 (xserver-1.16.4)
Hardware: x86-64 (AMD64) Mac OS X (All)
: medium major
Assignee: Jeremy Huddleston Sequoia
QA Contact: Jeremy Huddleston Sequoia
Depends on:
Reported: 2015-12-10 12:08 UTC by Stefan Hautsch
Modified: 2016-05-29 20:25 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Screenshots describing the problem (1.57 MB, text/plain)
2015-12-10 12:08 UTC, Stefan Hautsch

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Description Stefan Hautsch 2015-12-10 12:08:31 UTC
Created attachment 120451 [details]
Screenshots describing the problem

We are developing a freeware simulation software called Z88Aurora. The GUI is based on GTK2 and is released for Windows, Linux and OS X operating systems.

For OS X we use MacPorts to install all needed libs and then ship our software with a reduced package including the needed files only.

Everythink works fine on Linux and Windows, but on OS X we are experiencing a problem since the release of El Capitan (OS X 10.11).

The main GTK notebook page includes an OpenGL widget (gtk_gl_area) which displays the part geometry. When selecting another page, this OpenGL widget stays in front and does not disappear (cp. screenshots in attachment).

This problem only occurs on OS X El Capitan with XQuartz version 2.7.8 and 2.7.9 beta 1. XQuartz 2.7.8. works fine on OS X 10.10 and does not cause any problems with the OpenGL window.

Please let me know if this is a known error in XQuartz or where this needs to be fixed.

Kind regards,
Comment 1 Jeremy Huddleston Sequoia 2015-12-10 19:17:08 UTC
It's an OS X regression that I will hopefully be able to workaround in libXplugin.
Comment 2 Stefan Hautsch 2015-12-11 06:46:46 UTC
Thank you for your quick response! Is it possible to announce the fix here, so I know when we can release our software for El Capitan? Or will that be mentioned in the release notes?
Comment 3 Jeremy Huddleston Sequoia 2015-12-13 17:55:13 UTC
It'll be mentioned here and in the release notes.

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