Blender Git Loki

- another oldie! Bug 475, which was wrongly categorized by me as OpenGL
error... Jesterking report helped me finding the mistake! We found out
that pressing F12 while rendering is in progress, crashes...

Hi Yamyam,

I beg you to forgive me! Totally misread the report... the error was only
in pressing F12 *during* rendering, it even restarts a render then. This
happens always, no matter what is being rendered.

I found the code for renderwindow doesn't use queues to store events, like
in the rest of Blender, but immediately executes incoming events. This
means you can even press ZKEY (zoom) or F11 (hide) while rendering.

In CVS I've committed a patch that checks if Blender renders, before
allowing to execute the F12 event. Also now blocked is F3 (!) during render.
The other options (zoom, push window) still work.

-Ton-