HOT for Vray for Maya

V-Ray for Maya V-Ray for Maya :: SDK
1

Ok, an update. Did a test render based on the HOT library(Houdini Ocean Toolkit).
With help from Nico Rehlberg I was able to compile and output HOT data to Vray for Maya.
Right now Im using Vector Displacement and also a “foam map” (Eigenvalues<0) that indicates where the wave breaks.

Video 1 shows a HOT ocean surface with water shader and simple foam.
https://vimeo.com/49128478
alt download mov file: http://www.timjan.org/public/tessendorf_vray_v01.mov

Video 2 shows the same surface upclose with simple shading. Note the waves where it breaks/inverts.
https://vimeo.com/49128479
alt download mov file: http://www.timjan.org/public/tessendorf_vray_v02.mov

Technical stuff:
Im still trying to figure out what to include in the final Vray shader.
Useful stuff like the “Eigenvalues” indicates where the wave breaks, but there also seems to be some “foam vectors”, Eplus and Eminus.
Any Tessendorf experts or creative individuals that have any idea what these can be used for?

Saw some blender guys digging in on the Iwave solver to get reflecting waves.
Can this be combined with HOT/tessendorf??

I think Maya Ocean optimize ocean displacement by outputting all the fine details with bump maps.
Can this be a good idea here aswell? (all waves shorter than x::bump maps)

To be continued…

2

great work Tim

let me know if u need testers for HOT

cheers

3

Heya

Mao thats nice new ! Good work on shader and so on thanks ! As a side note any way to tune it to make the sea more like desert dunes? I was wondering the other day how to make them and I come across this script for max…

Thanks, bye.

4

Thanks guys :slight_smile: I´ll post the shader here as soon as its ready to use.

Regarding the dunes its kinda possible I think, did a quick test by upping the “shortest wave” parameter:

Besides that I got a really interesting side effect by tweaking the dunes, a really cool and stylized ocean surface:

Remember that theres already a working hot deformer that essentially does the same thing as my shader:

dunesv01.jpg
dunesv01.jpg640×480 34.7 KB

funkyv01.jpg
funkyv01.jpg640×480 45.3 KB

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Heya

MM dummes looks pretty promising ! If we can only somehow contrast the tips… That would make it a good base for modeling and so on so wow gratz!!!:slight_smile:

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very nice work here. This looks very good to me.
I tested HOT some time ago, and it was quite nice to use.

continue, continue :wink:

7

timdog my friend whats up? any update?

cheers

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+1 bump!! plz

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I was wondering about HOT and its tiling, for example if you zoom out the tiling pattern is very noticeable, is there a way to avoid the tiling at all? The vray results look great though!

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Yeah, allthough Tessendorff tiles can be very large tiling can become a problem.
I know that Naiad has a system based on HOT that randomizes the ocean structure.
An idea would be to blend two hot ocean surfaces based on a noise map. Ive seen people do it with Mayas ocean.

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By the way, sorry for the delay.
I didnt have time for personal projects lately so the plug is still on hold.
Ill try to finish it during christmas holiday :wink:

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Thank you timdog !
I hope you will find time.

13

Hi,
Any news about this ?

14

amigo, i know that we r maybe boring but could u plz give us some update on this?

thx

15

timdog if ur too busy

is it possible to share the source i would like finish it, i have some friends who would like to help me?

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I think it is better to contact him by email : http://timdog.cgsociety.org/about/