[PyOpenGL-Users] Zipping and rendering numpy arrays

[Martin B. <bl...@fu...>]

Hi

I have 2 or 3 long numpy arrays to send to the vertex pipeline.
This is actually most of my rendering time.

Here is what I do in Python:

def gliVertexArrays(a1, a2, a3=None):
    """
    Zip and output the given numpy arrays of floats through the GL vertex
    pipeline.
    """
    if a3 is None:
        list(starmap(glVertex2f, izip(a1, a2)))
    else:
        list(starmap(glVertex3f, izip(a1, a2, a3)))

Is there a C function that does this?

I saw glVertexPointer, but it seems I would have to create a temporary
array that would contain both my arrays just to call this function.
I'd rather avoid the memory allocation and zip-loop in C.

This seems pretty basic and reasonable to me... is it already in PyOpenGL?
If not, is there another way I'm not thinking of?

Any idea welcome.
cheers,