performance/sound issue (xpost) 2004-02-14 - By Roman Blöth
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Dear Paul,
> [..] Also: I don't think framerate is the issue because I am getting a
> better framerate with the PIII that the 'sound skip' is happening on
> than with other machines that have no sound skipping going on. And...
> It seems, although I haven't done extensive testing on this, that the
> third time I get the sound file to play and the swap to take place (it
> happens each time I enter a room in my 3d world...so I just exit and
> enter again 2 more times) I usually don't hear the skip.
2 issues come to my mind here:
1.: Maybe it would help to give the PIII-computer a faster graphics card
- 3d scenes are quite an effort, and on PCs - as far as I believe -
sound and 3d graphics are both handled by directX, so it could be of use
to reduce the directX-load by outsourcing some work to the graphics card...
2.: From your last sentence I get the impression that director might not
already have loaded all the shaders it needs to display the room you're
about to enter, which causes a delay - nothing invoked by sound load
here. We know this issue from working with quite huge 3d scenes and have
a workaround: Before the game/program/whatever starts, we use a special
camera: place one camera on top of your scene ("in the sky"), giving you
a view on the whole scene at once - since this looks odd to the user,
you still can put some plane directly in front of the camera, thus
hiding the scene (the effect is still the same, whether you actually can
_see_ the scene or not - only the camera should show the whole scene at
once if there were no plane in front). This is only needed once at the
start of your movie and causes director to load all the stuff it needs
to display any part of your scene from any perspective.
This _could_ stop your sound break.
Regards,
Roman.
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