[PyOpenGL-Users] offscreen rendering problem with glInitFramebufferObjectEXT

[Revaz Y. <yve...@ep...>]

Dear List,

I would like to use off-screen rendering with PyOpenGL.
According to the few informations I found on the web, one method is
to use a FrameBufferObject.

Unfortunately, when initializing a new FrameBuffer :

from OpenGL.GL.EXT.framebuffer_object import *
glInitFramebufferObjectEXT()

I get :

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)

/home/revaz/<ipython console> in <module>()

/usr/lib/pymodules/python2.6/OpenGL/raw/GL/EXT/framebuffer_object.pyc in 
glInitFramebufferObjectEXT()
    
301                                                                                              

    
302                                                                                              

    303 def 
glInitFramebufferObjectEXT():                                                            

    304         '''Return boolean indicating whether this extension is 
available'''                 
--> 305         return extensions.hasGLExtension( EXTENSION_NAME 
)                                  

/usr/lib/pymodules/python2.6/OpenGL/extensions.py in 
hasGLExtension(specifier)
     32                 print 
AVAILABLE_GL_EXTENSIONS                        
     33                 if not 
AVAILABLE_GL_EXTENSIONS:                      
---> 34                         AVAILABLE_GL_EXTENSIONS[:] = 
glGetString( GL_EXTENSIONS ).split()
     35                 return specifier in 
AVAILABLE_GL_EXTENSIONS                             
     36                         

the problem here is that GL_EXTENSIONS is None !

I'm running linux/ubuntu 9.10, python2.6 and PyOpenGL 3.0.1b1

All other suggestions about using off-screen rendering with PyOpenGL
are welcome.

Cheers,

yves



-- 
                                                 (o o)
--------------------------------------------oOO--(_)--OOo-------
  Yves Revaz
  Laboratory of Astrophysics EPFL
  Observatoire de Sauverny     Tel : ++ 41 22 379 24 28
  51. Ch. des Maillettes       Fax : ++ 41 22 379 22 05
  1290 Sauverny             e-mail : Yve...@ep...
  SWITZERLAND                  Web : http://www.lunix.ch/revaz/
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