Vray Basic Caustics

Wellllll one other then,
this time some caustics

first off download the scene :

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. Discuss this tutorial on forum.

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