Help with caustics

Corona Corona for 3ds Max Help Required
1

Hi, guys!
I need help with the caustic .I’ve never worked with it. I Read several forums, all solutions are there in my case do not work, probably I do not understand something. For water I use box with noize on bump and standart parameters in material. When I am using bidir all begins gradually black. And it’s no matter which mode bidir I use the result is still terrible. I attached two images 1. Render engine: progressive 2. Render engine:Bidir/VCM
Please help me)

progressive.jpg
progressive.jpg1500×1000 408 KB

bidir.jpg
bidir.jpg1500×1000 1.02 MB

2

Hi Liberti
In Bidir/VCM try to change mode to VCM.

3

Hi, jjaz82!
Thank you for your answer.
But I already tried to change it and the result is black image.
I don’t understand what is wrong

vcm.jpg
vcm.jpg1904×1025 652 KB

mat.png
mat.png369×978 107 KB

4

Try simplifying scene for the caustics. Only water all the rest midgray difuse material an light sorces that should produce caustics.

5

You may want to check this tutorial: My Corona caustic aproach - Corona for 3ds Max :: Tutorials & Guides - Chaos Forum

6

romullus, thank you so much!!!)))
This tutorial is very useful! As fo me I got a good result. Soon I’ll show it here.

7

How cool is that, Boris will be very pleased that his tutorial was useful! :]