-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I thought I'd take another shot at a decent sand texture; this is the
result of my first pass. It has all sorts of things wrong with it, but
it's not a bad start. :-) I'm not so much aiming for photorealistic sand
as I'm shooting for something that people instantly recognize as sand.

Whenever anyone posts sand images up, people complain about not seeing
sand grains, even if the sand in question is so far away that you
wouldn't be able to see the sand grains. The general solution to this
seems to be to have some sort of patterning going on at just about the
pixel level, where you can just see that there is something going on,
but you can't really see what.

The problem that I've had with this is that you have to tune your
patterning to the resolution you're rendering at. If you render at a
lower resolution, the patterning disappears; if you render at a higher
resolution, the larger-than-realistic "sand grains" become glaringly
obvious.

This also marks the first time I've tried to do subsurface scattering. I
didn't realize just how easy it is to set up, actually.

BTW, does anybody know if it's possible to make subsurface scattering
and normal perturbations play well together?

- --
William Tracy
afi### [at] gmailcom -- wtr### [at] calpolyedu

You know you've been raytracing too long when you stop using a
protractor to measure angles because you can do it just by looking.
    -- Taps a.k.a. Tapio Vocadlo
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFHRdL1KrVIcTMekC8RAmvtAJ0f17NnYlOzv0WcgRKbh4nELUr2lQCgstsd
XZ8XeEaCZXx8KfAZ9pcINnY=
=deV9
-----END PGP SIGNATURE-----

Post a reply to this message

Attachments:
Download 'test.png' (22 KB) Download 'test.png.sig.dat' (1 KB)

Preview of image 'test.png'