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[Octave-bug-tracker] [bug #44781] Qt (but not FLTK) figure draws empty a
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From: |
Michael Goffioul |
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Subject: |
[Octave-bug-tracker] [bug #44781] Qt (but not FLTK) figure draws empty axes before doing the actual plot |
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Date: |
Fri, 10 Apr 2015 00:02:26 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36 |
Follow-up Comment #6, bug #44781 (project octave):
The drawing canvas is implemented by class GLCanvas. This class inherits from
QGLWidget. It overrides QGLWidget::paintGL, which is the entry point for the
entire drawing process. This method is called internally by Qt, from the Qt
event loop, after QGLWidget has taken care of creating, initializing and
making current a valid OpenGL context corresponding to the QGLWidget.
In other words, the OpenGL commands are not executed in the octave thread.
There are executed in the Qt event loop thread.
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