Geometry Issue

[AndreaMannori]

Hi guys, I have a geometry issue with the Sponza model... I checked geometry, normals, phong's angle, bool smooth in Octane but nothing seems to solve this bug.
See the attached images. C4D R13
Thank you in advance!

[petergazo]

awesome I love it

[Proupin]

try to manually quadrangulate whatever 4+ sided polygons you have there

[bepeg4d]

i suggest to delete the normal tags and to lower the phong angol to about 20 for rounded low poly geometry
ciao beppe

[roeland]

The normals on the wall above the arc look broken to me, it should be plain red like the wall behind the arc.

--
Roeland

[TBFX]

The normals on the wall above the arc look broken to me, it should be plain red like the wall behind the arc.

--
Roeland

Yes they do look broken but in renderfarmsrl's screen grab of the normals displayed thay are not. I have had this issue with a couple of downloaded models and was unable to find the issue. The normals were all correct in Maya, I even took the model into Maya and cleaned up all the geo, exported the geo as an Alembic cache (which usually fixes everything) and then re-exported an obj to Octane Render and still had the same problems. The only solution I found was to rebuild the offending geo by hand using Maya's native tools, delete the original and then re-export the obj, of course I didn't need the UV's to match the original.

T.

[FooZe]

I have noticed at least with blender i get similar problems if i use really huge geometry (500m+).
Have you tried scaling the whole thing down?

Cheers
FooZe

[AndreaMannori]

Hi guys, I did a second version using the "triangulate" command... to convert any quads into tris. Then I exported to octane... it seems that the problem is still alive
See the attached images... by going deeply, I saw that also materials are affected by this issue...
Thank you in advance!

[FooZe]

Hi Guys,

This is what i was taking about when i have problems with geometry that is too large.
I made a simple 2 cylinder model to test. I made it big enough to get problems then scaled the exact same thing down by a factor of about 150 then re-exported from blender, updated the obj in ocatane, re-arranged the camera to get the model into view again and all was happy.

Cheers
FooZe

[AndreaMannori]

Thank you for the answer FooZe... Do you think it's a plugin issue or an Octane obj import failure? (.. I'm not very happy because I don't want to do all those crazy steps to reach a very standard result!)