Re: [PyOpenGL-Users] VBO Problem

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

Ian Mallett wrote:
> Hi,
>
> I've been trying a long time to get VBOs working with PyOpenGL.  The 
> VBOs appear to be created correctly, but I don't see anything at all 
> on the screen (I have other objects onscreen too not drawn with VBOs 
> just to make sure). 
>
> I'm creating the VBOs like so (vbo_formatted_vertices is a NumPy array 
> of the vertices all lumped into one array (not separated into separate 
> 3-item lists)):
Sorry I haven't time tonight to look into what's going on in your code, 
but here are 4 pieces of sample code that all use VBOs to draw with 
PyOpenGL...

http://bazaar.launchpad.net/~mcfletch/openglcontext/trunk/annotate/head%3A/tests//shader_1.py
http://bazaar.launchpad.net/~mcfletch/openglcontext/trunk/annotate/head%3A/tests//shader_2.py
http://bazaar.launchpad.net/~mcfletch/openglcontext/trunk/annotate/head%3A/tests//shader_3.py
http://bazaar.launchpad.net/~mcfletch/openglcontext/trunk/annotate/head%3A/tests//shader_4.py

which may help you pinpoint what's not working.  The 4th example shows 
usage in almost-legacy-free form (other than the model-view matrix), the 
arrays passed to the VBO are "interleaved" style vertex arrays.

HTH,
Mike

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