[PyOpenGL-Users] font-rendering problem

[vwf <vw...@vu...>]

Hello Python-OpenGL Experts,

I keep having problems with a part of my program. This program once worked,
but stopped working after an upgrade of my system.

Can someone help me get it running again? The problem appears in the initialisation 
phase of the program, during the "prerendering" of the fonts.

Thank you,
Frits



mine:~/fppu/manavnew$ ./manav_01.py
Traceback (most recent call last):
  File "./manav_01.py", line 22, in <module>
    from networking import *
  File "/home/frits/fppu/manavnew/networking.py", line 17, in <module>
    from constant_manav import state,scen
  File "/home/frits/fppu/manavnew/constant_manav.py", line 119, in <module>
    class cfont:
  File "/home/frits/fppu/manavnew/constant_manav.py", line 123, in cfont
    l1.build('0123456789.')
  File "/home/frits/fppu/manavnew/pyfont.py", line 97, in build
    l=self.font.getChar(c)
  File "/home/frits/fppu/manavnew/pyfont.py", line 127, in getChar
    current = self.createChar(char)
  File "/home/frits/fppu/manavnew/pyfont.py", line 150, in createChar
    list = self.textureToList( dataArray, metrics )
  File "/home/frits/fppu/manavnew/pyfont.py", line 188, in textureToList
    raise
  File "/home/frits/fppu/manavnew/pyfont.py", line 183, in textureToList
    glDrawPixelsub( mode, array )
  File "/var/lib/python-support/python2.5/OpenGL/wrapper.py", line 1273, in __call__
    return self.finalise()( *args, **named )
  File "/var/lib/python-support/python2.5/OpenGL/wrapper.py", line 469, in wrapperCall
    pyArgs = tuple( calculate_pyArgs( args ))
  File "/var/lib/python-support/python2.5/OpenGL/wrapper.py", line 328, in calculate_pyArgs
    yield converter(args[index], self, args)
  File "/var/lib/python-support/python2.5/OpenGL/GL/images.py", line 422, in __call__
    return self.arrayType.asArray( arg )
  File "/var/lib/python-support/python2.5/OpenGL/arrays/arraydatatype.py", line 55, in asArray
    return cls.getHandler(value).asArray( value, typeCode or cls.typeConstant )
  File "/var/lib/python-support/python2.5/OpenGL/arrays/arraydatatype.py", line 25, in getHandler
    return cls.getHandler( value )
  File "/var/lib/python-support/python2.5/OpenGL/arrays/formathandler.py", line 16, in __call__
    typ = value.__class__
AttributeError: ('__class__', <OpenGL.GL.images.TypedImageInputConverter object at 0xba1150c>)


The offending code:

# Adapted from:
# OpenGLContext 2.0.0b2
#
# OpenGLContext License:
#
# Copyright (c) 2000-2003, Michael C. Fletcher and Contributors
# All rights reserved.
[...]

    def textureToList( self, array, metrics):
        # Compile Numeric Python array to a display-list
        # use a single texture and coordinates for texmap version        
        # special case ' ' so that it's not rendered as an image

        mode = GL_LUMINANCE_ALPHA
        list = glGenLists (1)
        glNewList( list, GL_COMPILE )
        try:
            try:
                if metrics.char != ' ':
                    glDrawPixelsub( mode, array )
                    glBitmap( 0,0,0,0, metrics.width,0, None )
                    #glDisable( GL_BLEND)
            except Exception:
                glDeleteLists( list, 1 )
                raise
        finally:
            glEndList()
        return list


All on Debian Lenny (stable/5.0)
python:
  Installed: 2.5.2-3
python-opengl:
  Installed: 3.0.0~c1-0