01.23
this time some caustics
first off download the scene :
Download here
then if you havent’t already download the kitchen HDR image
Download here
next start max, load the scene if max asked about a missing HDR image, goto the material editor and correct the path.
i setup the scene, create a box, and a torus knot
added a spot light
- shadows on (vray shadows)
- under vray parameters check the smooth surface shadows
i’m not gonna explain everything what i did, you can see for you self if you download the scene 
and render the scene out, you should have something like :
![]()
now first off we’ll create some materials, so get into the material editor and seleect a new material, change it it vray material
- change reflection and refraction color to white
- check Fresnel reflections
- choose a very licht blue color as Fog color
- set fog multi. to 0.01
- check Affect shadows
assign it to the torus knot
now create a other material, also a vray material
for diffuse color select a light grey
and if you render you have something like this :
![]()
now we are missing the caustics, here we go:
get your vray renderer and goto vray:system
click light settings and select spot01
click “generate caustics” on
subdivs : 2500
multi : 100000.0
now go back to the render dialog and search for vray:caustic tab
click “on”
multi. : 4
search dist. : 0.4
max photon : 2000
and render it out you should get something like :
![]()
to get some better caustics change to
multi. : 2
search dist. : 0.4
max photon : 2500
also change the under vray:system -> lightsettings > spot01 caustics subdive to 5000
also add a meshsmooth to the torus (render Iter. 2)
then render it out
this is gonna take long, calculating the caustics but well,
![]()
and well thats it
hope this has been usefull
cheers.
Hi, good solution for caustic, but need a faster computer in order to achive it. Anyway thanks for this info really appreciate it……
Nick..
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Thanks for this short tutorial – exactly what I was looking for!
pilvqthldejztledwell, hi admin adn people nice forum indeed. how’s life? hope it’s introduce branch