Weird timing issue with Thread.sleep

[Andrej Mitrovic]

On 8/3/11, Andrej Mitrovic <andrej.mitrovich at gmail.com> wrote:
>     if ((t - t_prev).usecs > (1_000_000.0 / FPS))
>     {
>         t_prev = t;
>         DrawGLScene();
>     }
>
>     SwapBuffers(hDC);

My mistake here, SwapBuffers belongs inside the if body, there's an
unrelated keyboard bug that made me push it there but I've found
what's causing it. Anyway this is offtopic.