Surface artefacts using displacement

[lukgreg]

Hi,

I have a problem propably with a mesh because all the textures have the same effect.
After import model from sketchup I'm grouping meshes by material (convert to editable poly and attach)
Geometry usually is simple (walls, slabs).
But when I using materials with dispalcement (every, even standard corona materials) i get things like in attachment.
Sometimes I try to play with subdivide modifier, switch off 2,5D displacement, or changing px screen size. SOmetimes it looks better but still it appears. The only way is to switch off displacent map at all, in that case looks perfect.

Do you know what I'm doing wrong?
Thanks for help!

[pokoy]

It's probably because most of the geometry is made with large/thin faces. Displacement needs some reasonable tessellation to begin with afaik.
You could try adding either a Quadify or a Subdivide modifier (though it may cause other problems such as wrong edge order on holes in the mesh). Alternatively, you could manually subdivide the geometry - cut, connect etc, so it isn't built with those large faces only.

[Frood]

Similar topic, helps maybe:

https://forum.corona-renderer.com/index.php?topic=29947.0

I think there is a lot of room to make 2.5d more user friendly.


Good Luck