Trouble with transparent displacement

[Sarford]

Hi All,

I want to make puddles of water on the floor by duplicating the floor mesh, set it to a water material and displace it with a texture. This works fine except that Octane makes the intersecting edge with the normal floor mesh black. When I use a diffuse material for the water mesh, Octane does not make a black edge at the intersection point. When I use the same trick in Modo it works fine. Is this a bug?

[face_off]

Try setting the Kernel->Ray Epsilon to it's minim value (think it's 1um).

Paul

[Sarford]

Hey Paul,

Thanks for the quick reply. Sadly, lowering the Ray Epsilon doesn't relay help. When I make it bigger than 1mm the black border does indeed increase, but lowering below the standard 100 um does nothing. I dropped in a standard sphere with a specular material, partly embedded in the floor just to check but Octane doesn't render black lines at that intersection.

Cheers, Simon

[face_off]

Hi Simon. This may be a limitation with Displacement mapping in Octane. Try increasing the Level of Detail to maximum and adjusting the Displacement filtering.

Paul

[Sarford]

Hey Paul,

Although the black line does get smaller when I increase the level of detail, it doesn't disappear. No worries, I'll just find another way to get the same result. Thank you for your help!!

Cheers, Simon