On 20/07/2007, at 9:46 AM, brian.jorgensen wrote:

>
> Hi,
>
> I'm working on an opengl plotting/visualization module for SymPy
> (http://code.google.com/p/sympy/), a Pythonic CAS library. After a lot
> of frustration with PyOpenGL and various UI front-ends, I discovered
> Pyglet and have felt like a better person ever since ;-)

Glad to help :-)

> Through third-party bug reports and my own testing, I've found that
> when using Linux on under-accelerated graphics hardware (various
> laptops and VM environments), the refresh rate slows to about 3-5
> seconds/frame. After profiling, I found the bottleneck to be in the
> xlib implementation of window.flip() (the problem doesn't occur in
> windows at all, haven't tried OS X).
>
> It turns out there is something wrong with VSync in this situation, as
> turning it off with window.set_vsync(False) radically improves the
> framerate. So, my problem is basically fixed for now, but I thought it
> might be something worth looking into or documenting.

A fix to this was committed yesterday in r1052.  Let me know (or  
reopen issue 109) if the problem persists for you.

Cheers
Alex.

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