Problem going from 1.4 to 1.5, strange refractions?

[RichardBlank]

I get very strange results when I upgraded to 1.5
Look at the darker outside of the bottle. The smooth one is vray 1.4 and the wavey one is 1.5!
What is this!!




... and here´s the max file. http://www.horus3d.com.br/Max/VrayTestScen_v01.rar

[Candelero]

Which version of MAX / V-Ray is this ?

Best regards,
nikki Candelero

[RichardBlank]

It's Max8 and vray1.5 R3

[Paul Oblomov]

Not sure it's a bug in 1.5. I think it's a bug in 1.4x as I remember Vlado told smth like concernin' refraction or smth like that.

[Paul Oblomov]

Slightly tweaked...

[DaForce]

hmm looking at it now.

Hide the water and render, weird stuff.

How did you make the mesh? Lathed spline I assume.

[DaForce]

Yeah its as I thought. Its just a mesh problem. Simplest fix is drop a turbo smooth onto both the bottle and liquid mesh and set iterations at 2.. 1 might work but I didnt try.

Renders perfectly then.

[RichardBlank]

hmm looking at it now.

Hide the water and render, weird stuff.

How did you make the mesh? Lathed spline I assume.

It was done in Maya with a lathed curve and Wire tool for the top part...
Ok so if I put a turbo smooth it's going to render fine (a lot more polygons then...), but the strange thing is that it works perfectly in vray1.4xxx??

[Paul Oblomov]

Then - use .iges to transfer between maya and max. Or .fbx and you get native NURBS inside max.

[DaForce]

Depending on what 1.4 version you were running there was a refraction bug, this could have well been hiding the issue.

Atleast its an easy fix