Started by Lucio, September 15, 2007, 07:40:38 pm

Previous topic - Next topic


Sometime ago I've seen on a book a striking photograph of the Auiguille Noire du Peuterey under a strong wind, in the Alps. There was a sort of cloud formation streaming over the major crest, it was really marvelous and amazed me.

I thought about it for a while then I started to think how could I reproduce something similar on TG2. It was quite difficult because TG2 (almost actually) doesn't manage 3d clouds and cannot get a very accurate control over cloud placement. I'm not so familiar with functions, so I decided to utilize image mapping: I rendered many orthogonal projections of a black and white cloud density shader at high resolution, then remodeled them in Photoshop to give every layer the shape I wanted. The concept was to create a cloud formation with an accurate '3d volume' that follows the exact model I had in mind, and to do this I overlayed multiple cloud layers in the scene, like a cross section of an object. Something like that:

The shapes were modeled directly on Photoshop over an orthogonal projection of the terrain, then I placed them with the right coordinates in the scene, as density shaders for the clouds. There are six cloud layers in total.

And this is the final result:

Well, maybe doesn't seem anything particular, but I worked a lot on it :)

I'm trying to do many versions in Photoshop with different contrast, colour balance, little corrections etc. I'm undecided and can't manage to get a final version that completely satisfies me. I'm not an expert in post processing so I have to experiment a lot.

Any comment, hint and critic is very welcome, as always!




Wonderful! I though It was a photo at first.
The world is round... so you have to use spherical projection.


So this is Disney World.  Can we live here?


HOLY FREAKING COW!!!!!!! :o   I don't know what to say! That is without a doubt one of the most amazing TG renders ever made.


Wow this is amazing, I thought I was going to scroll down past your reference shot to find the terragen one! Faultless! :D

I'm actually working on a scene very similar to this at the moment but yours is way ahead of where I'm at. I like your image masking technique, I had thought on similar lines but never got around to testing the theory.


Ryzen 9 3900X @3.79Ghz, 64Gb (TG4 benchmark 6:20)
i7 5930K @3.5Ghz, 32Gb (TG4 benchmark 13.44)


Very nice.  These clouds remind me of some stuff I saw while hiking in the alps.  The landscape is very realistic, but I think you could really go far with the clouds here by adding more detail.  This is a great render so far, though. - A great Terragen resource with models, contests, galleries, and forums.


Did some quick post, hope you don't mind.

The world is round... so you have to use spherical projection.


Oh no, thank you Will! it's an interesting version. I encourage any other post-pro effort over my work :)

o_b: I agree with you, I already noticed that while the final render was completing. Maybe I've also increased too much some edge sharpness. I'll try to do something better now.

I would like to enhance a bit the contrast between darker and brighter regions of my cumulus without recurring to post, I played with many parameters but cannot come to a real solution. Do you have any hint?

Volker? ;D ;D ;D ;D

(Don't mind, it's a question between me and him)


that's amazing !!!
it really looks like a real picture !
congratulations for this !

Harvey Birdman

Come on, Lucio - if you don't stop raising the bar no-one will ever catch up.


Makes me want to go climb something.   :)


Nice Lucio!

I wish i understood the factors you use in things like this  :'(

Again Really well done!


Nice idea and result. The only thing I would say is that perhaps the pinkish colouring in the clouds is a little strong.

Kevin F

The clouds and landscape are amazing, but can nobody else see the banding in the sky?



I do thats why I did the post and blurred it out.
The world is round... so you have to use spherical projection.