[PyOpenGL-Devel] [ pyopengl-Bugs-730598 ] glInitMultitextureARB +wx returns 0 on RHLinux

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Bugs item #730598, was opened at 2003-05-01 00:50
Message generated for change (Comment added) made by mcfletch
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Category: GL
Group: v2.0.1
Status: Open
Resolution: None
Priority: 4
Submitted By: Mike C. Fletcher (mcfletch)
Assigned to: Mike C. Fletcher (mcfletch)
Summary: glInitMultitextureARB +wx returns 0 on RHLinux

Initial Comment:
glInitMultitextureARB() is returning a value of 0 on
RedHat Linux while the info script claims that the
extension is available (and the same machine under
Win2K does have the extension and is able to run the
same code).

This is seen in the NeHe6_multi.py OpenGLContext test.
 Possibly a problem with the particular context-type
created (e.g. might be a 16-bit vs 24 or 32-bit
problem?)  Might be a problem with Mesa as well.

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>Comment By: Mike C. Fletcher (mcfletch)
Date: 2003-06-03 12:44

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Okay, this is now fixed, though the fixes are not the most
beautiful things in the world.  Turns out that the wxPython
wxGLCanvas only creates the actual context during a "window
realization" callback.  The fixes involved providing a new
customization point in the context base class, and a
specialization in the wxPython context.  There is also a new
flag in the wxPython context which provides a last resort
attempt to initialize during the paint event.  This appears
to work in most cases, though the meta-test is showing a few
rendering artifacts.

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Comment By: Mike C. Fletcher (mcfletch)
Date: 2003-05-29 19:23

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Just making the summary line match the current understanding
of the bug.

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Comment By: Mike C. Fletcher (mcfletch)
Date: 2003-05-02 05:54

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Only does this under wxPython OpenGLContext, not under GLUT
OpenGLContext or non-context GLUT.  Likely just not
available for the context due to mode settings or the like.
 Should find out why, but lower priority.

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