How to use glBufferData() in PyOpenGL?

Question

How do you use glBufferData() in the PyOpenGL python bindings to OpenGL?

When I run the following code

import sys
from OpenGL.GL import *
from PySide         


        

Answer 1

You can also use the array object of the array module:

from array import array
vert=[0.0,0.0,0.0,
      1.0,0.0,0.0,
      1.0,1.0,0.0,
      0.0,1.0,0.0]

ar=array("f",vert)
glBufferData(GL_ARRAY_BUFFER, ar.tostring(), GL_STATIC_DRAW)

https://docs.python.org/2/library/array.html

Answer 2

As a workaround, until lists are supported, pass the vertices as a numpy array:

vertices = numpy.array([0.5, 0.5, -0.5, 0.5, -0.5, -0.5, 0.5, -0.5], 
                       dtype='float32')

The glVertexPointer call should be glVertexPointer(2, GL_FLOAT, 0, None)