Re: [PyOpenGL-Users] How to use shaders in pyopengl

[Mike C. F. <mcf...@vr...>]

Don Laursen wrote:
> I took a look at the GLCanvas.py demo that comes in the wxPython demo
> package and moved some things around in my program to be more like
> that example. It still wouldn't work (though it would get further
> before printing an error), until I removed the
> "attribList=[wx.glcanvas.WX_GL_DOUBLEBUFFER" from my GLCanvas
> constructor call. Once that was gone, it worked just fine.
>
> Just having the attribList parameter causes my program to fall back on
> the Microsoft driver and fail to work. This happens even when I set
> attribList=[], so it's not the fact that I'm trying to use
> double-buffering that's causing it.
>
> So is this a wxPython issue or a PyOpenGL issue?
>   
IIRC the GL visual selection is supposed to take the attribute bitmask 
as a "minimum requirement", but it's possible that without 
glcanvas.WX_GL_RGBA the algorithm is giving you an un-accelerated 
implementation, maybe a 256-color display or something silly like that?  
You could try fully-specifying the attributes, i.e.

    [ WX_GL_RGBA, WX_GL_DOUBLEBUFFER, WX_GL_DEPTH_SIZE, 24 ]

and see if that selects the proper visual.

HTH,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com