glass with air bubbles in 1.46.12 - how?

[Gijs]

I am trying to create air bubbles in glass (latest beta) but the only way to make it look physically correct is to make a boolean.

I tried to assign air material to the bubble or invert normals or applied inverted idex of refraction, but it all doesn't work.

Any thoughts?

[RErender]

did you try just attaching the meshes?

[percydaman]

how does your render look? Looks okay to me from here.




unless Im just plain doing it wrong...

[CCS]

How'd ya do it Percy?

[percydaman]

well that image just has several little spheres inside a larger one. the larger one has default IOR of the vraymatl refraction. The smaller ones have IOR of 1.0 i think. made the scene at work so dont have access to it.

[Gijs]

Here is a clear example of glass with an air bubble inside at the left and a single shape (tiny hole at the bottom to be able to connect the spheres to make sure it is a single solid) at the right.

The black refractions from the environment are almost completely missing in the left part.

[egz]

Gijs: have you tried just attaching the mesh of the bubble and flipping its normals?

At least that seemed to work in the older versions:

[Gijs]

Sorry Eric / Tolgeir, I forgot about attaching the mesh option. That seems to work BUT: What I was trying to achieve is making bubbles with a particle system, so that would mean I have to use mesher to convert the system to a mesh first.

I don't know if this a bug of a limitation, but it would be more intuitive if we could just apply a air material to a mesh and vray takes care of the rest. Vlado, is this possible?

[trixian]

Just use an inverted sphere as your instance for the particles.

[Gijs]

Just use an inverted sphere as your instance for the particles.

O.K., but I still would need to covert the particles to a mesh, is that correct?

[trixian]

no. you can still have them as particles. Animate them if you feel like it