Hi everybody!
Since being on Lion, I have problems with my C++ Qt and PyQt OpenGL
applications. In basically every PyQt script that uses QGLWidget, I get this
error:
PyQt-mac-gpl-4.8.5/examples/opengl $ ./hellogl.py
Traceback (most recent call last):
File "./hellogl.py", line 154, in paintGL
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
File "errorchecker.pyx", line 50, in
OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError
(src/errorchecker.c:574)
OpenGL.error.GLError: GLError(
err = 1286,
description = 'invalid framebuffer operation',
baseOperation = glClear,
cArguments = (16640,)
)
This example is the hellogl example from the PyQt distribution. It seems that
the QGLWidget gets a paintGL event even when the framebuffer is not yet
complete. The same happens with some of my more complex C++ Qt applications,
which indicates that this might rather be a Qt problem. Did anyone else notice
this, and is there a fix / workaround? Problem is, that it might lead to lots
of problems further down the road, since some of my programs rely on the first
GL command actually working correctly.
Cheers,
Arne
--
Dipl.-Inform. Arne Schmitz Phone +49 (0)241 80-21817
Computer Graphics Group Mobile +49 (0)151 29145947
RWTH Aachen University Fax +49 (0)241 80-22899
Ahornstrasse 55, 52074 Aachen, Germany http://www.rwth-graphics.de
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