glGetVertexAttribPointerv Interface to glGetVertexAttribPointerv
usage: params = glGetVertexAttribPointerv( index, pname )
C function: void glGetVertexAttribPointerv (GLuint index, GLenum pname, GLvoid
pointer)
Psychtoolbox/PsychOpenGL/MOGL/wrap/glGetVertexAttribPointerv.m