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Hi all,
I posted a message some months back regarding sometimes seeing
renderings speeding up dramatically for no apparent reason and got little
response. Today, I finally found out how to reproduce this and I've done
some tests.
First of all, the secret is to click on a menu while rendering. It
doesn't matter which one as long as that menu remains opened during the
render. This has the affect of speeding up all renders on my machine. In
some cases the a speed up of 30% but more often 5% to 10%. In any case a
significant speed up.
One place where it makes an amazing difference is during the output and
scrolling of the message window. If you have any scene with a lot of #render
statments or are doing an animation you have to try this.
There are obvious problems though. The first is that this removes your
ability to multitask. You mouse must remain over the opened window. I also
noticed that the output to the message window is sometimes corrupted, or
rather sometimes lines are missing entirely.
I'm running with windows NT 4.0. I'd appreciate it if Win9X people could
test this as well. If this exists across the board I think it should count
as a bug and be reported to the POV Team. I don't know about you but I'd
love a consistant 10% speedup.
I recommend everyone try the standard vect2.ini scene as a test. The
difference was astounding on my machine.
Here are some results of a little testing.
vect2.ini at 160X120 (60 frames animation):
situation time secs
max'd window, no menu, no disp 177
max'd window, w/ menu, no disp 119
min'd window, n/a , no disp 171
blank.pov at 6400X4800 (no objects, just black and 2 light sources):
situation time secs
no menu 240
w/ menu 180
skyvase.pov (with POVBench settings):
situation time secs
max'd window, no menu, no disp 95
max'd window, w/ menu, no disp 90
min'd window, n/a , no disp 96
max'd window, no menu, w/ disp 97
max'd window, w/ menu, w/ disp 92
--Rainer
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