[Bug 730912] New: Crash when using "gst-launch-1.0 videotestsrc ! eglglessink" pipeline

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=730912
  GStreamer | gst-plugins-bad | 1.2.0

           Summary: Crash when using "gst-launch-1.0 videotestsrc !
                    eglglessink" pipeline
    Classification: Platform
           Product: GStreamer
           Version: 1.2.0
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: yogishk at nvidia.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=277432)
 View: https://bugzilla.gnome.org/attachment.cgi?id=277432
 Review: https://bugzilla.gnome.org/review?bug=730912&attachment=277432

fix for the issue

With gst-plugins-bad 1.2 branch, eglglessink crashes when using "gst-launch-1.0
videotestsrc ! eglglessink" pipeline.

eglglessink doesn't disables vertex attribute arrays enabled for a GL program
when switched to other program. Hence when using 2nd program GL will try to
read from arrays enabled for 1st program, which results to crash.

Attaching the change to fix this issue.

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