water and vraysky reflection

[Crayox13]

Hi,
I had to move my vraysky to vray environment because I needed my MAX background black (otherwise I got white edges in composite). But now, my reflections don't see vraysky. Shouldn't it be visible? Even though I have black background? Any way around it?

Also, when using render element caustics, since my caustics is underwater, bottom of the swimming pool, it's shown black, not visible through water. How to fix that? Of course it's visible in the normal render, but not in a separate element.

thx

[joconnell]

Just need to put it into the reflection override too! On the caustic side of things I reckon Vray isn't able to understand transparency so it's seeing your water surface as a solid object which is blocking out the caustics inside / behind it. It's kind of similar to the problem you get trying to make a depth channel for something with glass in front of it - vray sees the glass object before it sees the object behind it and there's no way to save out two different depth values in one pixel. You might have to do a separate render for the caustics on black and comp them after.

[Crayox13]

Wow, that was blind of me. I see the refl/refr now lol. Thanks!!

I see what you mean, yes, z-depth also can't see through transparency, though I believe other things like caustics, should be fixed to "see". Or are there reasons not to for this?

[rivoli]

I see what you mean, yes, z-depth also can't see through transparency,

actually all elements work with transparency since the last sp. in the refraction properties of the vray mat there's an affect channels pulldown menu, set that to all channels and transparency will be taken into account for all elements. it may help with your caustic problem too.

[Crayox13]

Rivoli, I just saw that like an hour ago, rendering now, will see if it works. It should I guess.

Thanks