"J. Lee Dixon" wrote:
> I am currently experimenting with several of the model format loaders (OBJ
> loader from the Sun utils, and 3DS from NCSA). I noticed that even small
> models rendered very slowly (10fps) when loaded in 3DS versus the same file
> in OBJ format. Specifically, I am using a free model of a dolphin which
> can be found at Flashfire: http://www.flashfire.com/free3dm.htm. The OBJ
> version renders near 30 fps.
>
> Has anyone else seen this? What could be causing this large difference?
>
> J. Lee Dixon
> Software Engineer
> SAIC - Celebration, FL
> [EMAIL PROTECTED]
> 407-566-1438
>
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Whatever geometry type the loader uses will affect render speed enormously.
For example, if the loader creates the polygons of an object as a TriArray vs.
a TriStripArray, it will render slower if the object's polygons could be
organized into large strips. Also, if lots of Appearance nodes are used that
would also slow down the render. A good loader should share as may
Appearances as possible.
See the Java3D Performance Guide at the web site for more...
--
__________________________________________________________
Shawn Kendall Full Sail Real World Education
Course Director 3300 University BLVD
Real Time 3D for Gaming Winter Park FL 32792
[EMAIL PROTECTED] http://www.fullsail.com
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