I looked into this a bit, and sent Joel and e-mail, but I thought you all
might interested:
I looked into this a bit (I didn't write it...a student did quite a while
ago), and it appears that in the 3DS loader, we have backface culling set
to NONE, and setBackFaceNormal to TRUE. I believe this was done so that
some models which aren't enclosed (like half a sphere) will render
correctly. So, basically, no culling is occurring. This would account
for the slowdown.
I'll look into adding a property to prevent this from happening for all models.
At 11:52 AM 5/16/2000 -0700, 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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