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Support => Terragen Support => Topic started by: AP on September 27, 2015, 02:14:20 am

Title: Cloud warping
Post by: AP on September 27, 2015, 02:14:20 am
I am using the fractal warp shader to add details to a low octave cloud as an experiment of sorts but what i am seeing are squared artifacts here and there and am curious if this is caused by the fractal warp shader itself.

Answered.

Title: Re: Cloud warping
Post by: Dune on September 27, 2015, 02:57:03 am
I think it does, as it has some sort of vertical 'erosion' element in it. You'd better warp with the normal warp setup, I guess.
Title: Re: Cloud warping
Post by: AP on September 27, 2015, 04:09:55 am
That seems to make the most sense because the sides of the clouds suggest such. I figured i would try anyways as an experiment.
Title: Re: Cloud warping
Post by: Dune on September 27, 2015, 05:17:51 am
Never enough experiments, that's how one learns  ;)
Title: Re: Cloud warping
Post by: AP on September 27, 2015, 05:50:14 am
Without doubt.    :)
Title: Re: Cloud warping
Post by: Oshyan on September 28, 2015, 07:08:08 pm
Fractal Warp is, I believe, very specifically intended for use on terrain as displacement. So it's not surprising it might be creating "artifacts" or other weirdness when used on something that's getting shaded volumetrically (cloud).

- Oshyan
Title: Re: Cloud warping
Post by: AP on September 28, 2015, 10:29:41 pm
I used it on clouds looking from above and it looks good so in the case of clouds, it might work in some rare instances. Distant and or orthographic views might work well.
Title: Re: Cloud warping
Post by: Matt on September 29, 2015, 01:24:49 am
The Fractal Warp Shader only warps in X and Z. Maybe we need a 3D version of this.

Matt
Title: Re: Cloud warping
Post by: AP on September 29, 2015, 02:32:02 am
That certainly would open up some nice additional ideas and an easy way to create warps with only one node.
Title: Re: Cloud warping
Post by: AP on September 29, 2015, 02:38:28 am
What would be nice is add some additional inputs to the existing fractal warp shader. X,Y and Z check boxes for the warping axis and a randomize tab. This would be quite ideal.
Title: Re: Cloud warping
Post by: Dune on September 29, 2015, 03:45:12 am
Ditto this.
Title: Re: Cloud warping
Post by: cyphyr on September 29, 2015, 08:48:46 am
Quote from: Matt on September 29, 2015, 01:24:49 am
The Fractal Warp Shader only warps in X and Z. Maybe we need a 3D version of this.

Matt


Definately a 3D version would be good. It may also get rid of the artefacts that occur at the equator.
Title: Re: Cloud warping
Post by: AP on September 29, 2015, 08:03:37 pm
What artifacts?, curious.
Title: Re: Cloud warping
Post by: Dune on September 30, 2015, 04:37:29 am
I guess if you render an equatorial scene with fractal warp that only works in XZ, you get strange effects, not what you'd get at 0/0/0, but kind of rotated.
Title: Re: Cloud warping
Post by: AP on September 30, 2015, 05:01:46 am
That would make sense.
Title: Re: Cloud warping
Post by: bobbystahr on November 26, 2015, 12:30:00 pm
Quote from: Matt on September 29, 2015, 01:24:49 am
The Fractal Warp Shader only warps in X and Z. Maybe we need a 3D version of this.

Matt



yes please