Re: [pygame] Speed up image.tostring with OpenGL ?

["R. Alan Monroe" <amonroe@xxxxxxxxxxxxxxx>]

> The only other way I know how to make OpenGL textures is with NumPy, using
> the GL_FLOAT token.  This may be better for your purposes--although the way
> I see it, converting a surface to a texture is going to involve a conversion
> no matter which way you do it.  Note that it's much faster to *update* a
> texture rather than create a new one.  If at all possible, this may be your
> best opinion to improve speed.

I'm very skeptical that PyOpenGL actually works correctly.

On my box (old 2.4 GHz laptop w/geforce 4), the classic nehe lesson 42
(drawing a maze to a texture) python port gives HORRIBLE framerates,
judging by eye to be about 5 fps, no matter whether I'm using Python
2.4, 2.5, 2.6, and I've tried repeated reinstalls and upgrades of
PyOpenGL. The maze drawing always stops prematurely too, but that may
be a logic bug in the ported version. Has anyone else duplicated this
problem? The original C version of lesson 42 works at full frame rate.

My self-written programs have really bad framerates too, but I barely
understand OpenGL so it's possible those are my own fault.

Alan