Various tests

[Techie]

Hi,

First of all, thanks to everyone at Refractive Software for making Octane!
It makes rendering so much fun!

This is a simple glass material test rendered in Octane pre-2.3 v4, modeled in MoI3D.
An HDRI background was used for the lighting.
I think the quality has improved greatly since pre-2.3 v2.

16000 spp, 22 min, filter size 1.5

[falcon76]

Nice first test and welcome.

Can I ask you which parameter have you used for exporting these object out of Moi?
Have you pass from blender or directly in Octane?

Thanks
Luca

[Techie]

Thanks!

I imported it directly from MoI3D. I think the export settings were:
Output = quads and triangles
Weld vertices along edges = off
Angle = 7.5
Divide larger than = 0.5 (curved)
Avoid smaller than = 0.05

[tomas_p]

Good materals...

[falcon76]

Thanks!
I imported it directly from MoI3D.

Ok. It's me or there are some little problem with UVs on the bottom of the glass and bottle?
I usually redo UVs in 3DCoat, for remove this. But I'm trying to avoid this passage, for simple object.

Thanks for sharing and yes, materials are really good.

Ciao
Luca

[Techie]

Good materals...

Thanks!

Ok. It's me or there are some little problem with UVs on the bottom of the glass and bottle?
I usually redo UVs in 3DCoat, for remove this. But I'm trying to avoid this passage, for simple object.
Thanks for sharing and yes, materials are really good.

These objects don't have any textures applied to them, so the UVs shouldn't affect the look, I think.
But after doing some tests it turned out the objects where too close to the ground surface (they were about 0.0012 cm above), making the closest faces of the objects become transparent and showing the background image. Changing the rayepsilon setting to 0 (from the default 0.0001) fixes the issue, but I've read that one's not supposed to change this setting (I'd like to know why though ).
So instead I tried moving the objects further away from the ground to see at what distance the error disappears, and at 0.012 cm from the ground it disappears and the reflections look correct.
Here's a new render - for this one I also increased maxdepth from 8 to 10, I noticed this made the bottom of the glass, bottle and vases a little brighter:

16000 spp, 22m13s, max depth 10, filter size 1.5

[Techie]

Here's a render from another angle:

16000 spp, 17m47s, max depth 10, filter size 1.5