Hi Vincent,
On Wed, 2005-11-23 at 16:32 +0100, Vincent Honnet wrote:
> Hello,
>
> I have a question concerning the volume rendering: if the camera is far
> from the volume the framerate is about 30 or 40 Fps, if the camera is
> near of the volume the framerate decreases to 15 Fps. Is that normal ?
> It could become a problem for me with stereoscopic visualization.
Yup, that's perfectly normal. Volume rendering is totally fill-limited,
so the larger the volume on screen, the slower it will be. You can speed
it up by using a lower resolution, if that is possible for your
application, or by using a lower number of slices (with the associated
loss in quality).
Other than that there are not many alternative shy of rewriting the core
volume renderer to use smarter algorithms on current graphics hardware.
There have been some interesting developments since the VolRen Lib was
written, but we haven't had time to incorporate them.
Sorry
Dirk
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