[PyOpenGL-Users] Building an interleaved buffer for pyopengl

[Nick S. <ni...@so...>]

Hello!

(Full disclosure: I actually posted this on stackoverflow a few months
ago but I didn't really receive a good response. url:
http://bit.ly/a8W5hR )

I have a series of sprite objects rendering to textured quads.  Right
now they all have individual render() methods which return an
interleaved buffer. I call them all in order and batch these vertices
and texture coords before sending to pyOpengl's
glInterleavedArrays/glDrawArrays.  Is there a better way to be doing
this?  The fastest way seems to be generating a python list and
converting to a numpy array later which doesn't seem right.

Thankyou for any help?

I have attached some example code and their timings.  Timings using
random numbers on my machine:

$ python testing2.py
from list: 9.02473926544 ms
array: indexed: 14.8707222939 ms
array: slicing: 30.3278303146 ms
array: concat: 26.5012693405 ms
array: put: 45.0277900696 ms
ctypes float array: 26.240530014 ms

- Nick