Displacement and Tesselation
Posted: Fri May 27, 2016 9:13 pm
Hi guys - we started using Octane and have loved it so far. We ran into this issue which I hope some of you can help with.
Tesselation seems to be directly correlated with displacement which is awesome except when it doesn't detect enough displacement and creates geometry distortion.
Here is a picture of what I mean:
In the circled areas, you can see where the model is not getting enough tesselation and looking weird.
Here is the same material with just the normal map:
It's not the displacement map that is the issue - here is a shot with displacement in toolbag
Finally I decided to increase the displacement distance and taht seems to have added tesselation geometry, but the object should not displace this much:
Is there a way to manually adjust or compensate tesselation? The renderers I've worked with in the past - Modo internal and iRay, have a value in the shader that can increase or decrease tesselation as a type of multiplier.
If not, is there another solution to this problem?
Tesselation seems to be directly correlated with displacement which is awesome except when it doesn't detect enough displacement and creates geometry distortion.
Here is a picture of what I mean:
In the circled areas, you can see where the model is not getting enough tesselation and looking weird.
Here is the same material with just the normal map:
It's not the displacement map that is the issue - here is a shot with displacement in toolbag
Finally I decided to increase the displacement distance and taht seems to have added tesselation geometry, but the object should not displace this much:
Is there a way to manually adjust or compensate tesselation? The renderers I've worked with in the past - Modo internal and iRay, have a value in the shader that can increase or decrease tesselation as a type of multiplier.
If not, is there another solution to this problem?
