Hi. I'm trying to do some kind of perlin noise (1 or 2 octaves max) in ARB_VP (not Cg!). I've searched the net for some ideas but I found only 2 partly useful examples. One on nVidia's dev pages that uses table look-up and uses way to many instructions and another on opengl.org forums that uses hashing function. I've translated it to ARB_VP and it seams it only works for small input values. So if anyone has (working) example of VP(ARB_VP, NV_VP, (DX)VS) perlin noise I would realy like to see it. ps: Should I post this in OpenGL forum? You should never let your fears become the boundaries of your dreams. [edited by - _DarkWIng_ on November 27, 2003 6:41:12 AM]

I''m not really sure about that, but if i remember correct there is a demo around which uses vertex programs for generating noise for terrain rendering. I don''t remember if it actually do that (generate noise in the vp) but i think so.

I think this is the link: (I don''t know how to actually apply a link to this, so this is the address )

http://esprit.campus.luth.se/~humus/3D/

and this is the demo

http://esprit.campus.luth.se/~humus/3D/InfiniteTerrain.zip

Hope you find what you are searching.

HellRaiZer

I''ve saw that, but perlin noise is created on CPU and not in VP. Any other link?

You should never let your fears become the boundaries of your dreams.