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displacement with jagged edges
Posted: Wed Jul 16, 2008 3:19 pm
by EADC
Can anyone tell me where the jagged edges around the litttle spheres come from?
Displacement map used:
Tried increasing the disp. precision and different meshing quality but it doesn't help. It's directly out of rhino, cylindrical mapping.
Thanks in advance.
Posted: Wed Jul 16, 2008 3:24 pm
by oz42
I don't use displacement that often but having read around the subject people are suggesting that 16 bit images (rather than standard 8 bit) really could help out here.
Posted: Wed Jul 16, 2008 3:33 pm
by EADC
well, the actual map is a 16 bit png... thought about that already before i started making it.
Posted: Wed Jul 16, 2008 3:48 pm
by tom
You should use more bit depth and resolution in this case.
Posted: Wed Jul 16, 2008 4:01 pm
by EADC
well, the map has a 1000 pixel width and over 8000 height for three spheres. Should that not be sufficient? The map shown above is cropped for showing it here. I'll see what happens with 32 bit tiff
Posted: Wed Jul 16, 2008 4:10 pm
by jurX
....and you can make the edges a little blurry to.
Posted: Wed Jul 16, 2008 4:15 pm
by tom
Sorry, it wasn't mentioned in your post.
EADC wrote:Displacement map used:
Even for 1000 x 8000 (which is higher than needed in my opinion) and 8-bit, the jaggies in the render look worse than expected. Could you render a closeup using lambert material?
Posted: Wed Jul 16, 2008 4:16 pm
by EADC
did some blurring too. Map is much more refined than the jagged stuff in the render. Just compare the disp map to the render.
Posted: Wed Jul 16, 2008 4:21 pm
by KurtS
I think this will disappear if you subdivede your mesh, or check "adaptive" precision.
Posted: Wed Jul 16, 2008 5:20 pm
by tom
A quick test here looks acceptable...
