[PyOpenGL-Users] Stencil _slow_

[fulko <vw...@fv...>]

Hello,

I try to use a stencil buffer with OpenGL and gtk (in Python).
The stencil does not work correctly, and is soooo slowwww (~100x).
After two days my resources are exhausted; I don't know what to try
next. I need the stencil for a rather simple operation: not drawing 
in a few selected areas.

Documentation on the use of stencils is sparse, most about lighting,
and all for C. Does someone have a simple stencil example in Python 
that works fine? Or does someone know the magic trick to get it running?

I tried to force the use of the stencil-buffer with:
glconfig = gtk.gdkgl.Config(attrib_list=(gtk.gdkgl.RGBA,
	                                 gtk.gdkgl.DOUBLEBUFFER,
                                         gtk.gdkgl.STENCIL_SIZE, 1,
                                         gtk.gdkgl.DEPTH_SIZE, 1))
but with no effect: STENCIL_SIZE seems to be not available


I run Python 2.3, PyOpenGL 2.0, I tried pygtkglext-1.0.1 and
python-gtkgl 2.0, both with pyGTK 2.0. My video-card is an 
NVidia geForce2 GTK with 1.0-6106 drivers. All on Debian Testing 
(a rather old testing version).

Thanks for any help,
Fulko