[Plib-devel] Update on 3ds loader

[Per L. <li...@ho...>]

I sat down and did some work on the 3ds loader this evening, and it works
better now. However, I have discovered some major weirdness that I'm not happy
about:

* One of the models Wolfram Kuss sent me, testquader.3ds, includes a texture
  called SNOO-CAT.BMP. I never got this texture to show in plib, which I hope
  is because the BMP image loader does something weird (I think Steve has said
  several times that the bmp format isn't to be trusted) - I can get it to work
  if I replace it with another texture (rgb, for example).

* A bit worse: The model chevy.3ds seems to miss some texture coordinates - at
  least my loader can't find them. There are some texture coordinates specified,
  but for some parts they just seem to be missing. Anyone who knows if there is
  another chunk than CHUNK_MAPLIST (0x4140) which is used by 3ds for storing
  map coordinates? Perhaps there is some intelligent default behaviour? For now,
  I just don't give any coords to ssg if they're missing, and display a warning.

The latest version of ssgLoad3ds.cxx can be downloaded from

  http://www.mdstud.chalmers.se/~md6pl/ssgLoad3ds.cxx

This version also includes the improvments made by Paolo Leoncini (a lot of
texture stuff), and all long integers are replaced by int. Even if not
perfect, the models come out looking ok, and it doesn't crash any longer (quite
an improvment, if you ask me :)

Regards,
Per Liedman

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