Playing with rector water and caustics

[samuel_bubat]

Hello,

just a little test I made with reactor water.
Works quite well !!
Rendertime was ~2min per frame with a precalculated Irr.Map.

http://sorceress.netfrag.org/optix/s...orwater_01.mov

[vlado]

heh, very cool Maybe the light should be a bit stronger to see the reflection caustics a bit better.

Best regards,
Vlado

[Aldaryn]

Nice! What was your subdivision for the water? Looks pretty smooth.

Best regards,

A.

[m_hinks]

Thats Cool, definetly like to see more, and some explaination.

[samuel_bubat]

The caustic subdiv. for the direct light were 6000.

The water object itself is made of a spline and a "Garment Maker". I than used
a "Mesher" object to turn the spline/Garment into a mesh and added a relax modifier on top.
I used a mesher because the linked reactor spacewarp is a worldspace mod. so you can´t add
a relax on top. The mesh is ~180 000 polys.

I´m currently rendering the same scene in an indoor scenario with underwater lights. The frames that allready rendered, look amazing. I ´ll post it tomorrow. Here a preview

[bluescreen2]

looks great. which spacewarp did you use?

[Aldaryn]

Absolutely beautiful patterns you've got there! Can't wait to see the whole sequence finished.

Since now most of the effect is directly visible, how about a direct calculation of the caustics to get the most detail out of your render? (Assuming that it's still accessible in the vray build you're using, I haven't played with it since rc3 or 1... )

Best regards,

A.

[sv]

yes - wow - that's fricking brilliant.
you've desperately got to do a quick tutorial - i would love to know how to do this!

what are your caustic settings?

[MoonDoggie]

Tutorial imo as well Excellent job

[DaForce]

Very nice!

The indoor one looks fantastic!

Caustics really are a breeze to use. Using area lights can make things a little tricky tho as you often need really high light caustic photon subdivs to get a nice results. But with direct lights its great.

[samuel_bubat]

ok.. here is the final animation.

http://sorceress.netfrag.org/optix/s_caustics_01.mov

The caustics are maybe a bit strong.. but anyway...quite mesmerizing
rendertime was ~7min per frame (intel Q6600)
I placed two omni lights inside the pool.
The caustic settings:
(units setup: display units metric/meters. System units 1 unit is one 1 centimeter)
Global Multiplier 1000 (because of the omni´s)
search distance: 0,3m
max photons: 200
max density: 0,0005m
caustic subdivisons for the omni´s: 3000
(surprisingly it even looks very good with just 1500 subdivs.)

@DaForce: yes.. sometimes you really need high settings. For the first animation
I used 6000 subdivs.. In this case I was really surprised that 3000 and even less give
these smooth results.

@bluescreen2: reactor water is implemented as spacewarp. you can find it in
create/spacewarps/reactor

if I find the time I will make a little tutorial of this test.

cheers,

sam

[Aldaryn]

Awesome!

Best regards,

A.

[m_hinks]

Really great, you have it nailed. I want to play!!

[mcvltd]

Yeah, me too! Looks fantastic! I want to try this with dreamscape water.

Waiting patiently for the tut!

[ene.xis]

looks amazing!

great test!...and u should definetely make a tutorial out of this!