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Support => Terragen Support => Topic started by: Njen on January 16, 2007, 04:17:48 PM

Title: Distance Shader not working with 3D Clouds properly
Post by: Njen on January 16, 2007, 04:17:48 PM
1. Add a Low-level: Cumulus (3D /Volumetric) cloud layer.
2. Create a Distance Shader and pipe it into the Blending Shader input of the Cumulus' Density Fractal node.
2a. Pipe the camera into the Distance Shader. [Edit]: for got this one :)
3. Invert the blendshader in the Cumulus' Density Fractal node (and turn on Blend by Shader).
4. In the Distance Shader, set the Far Distance to 20,000 and the Near Distance to 19,000
5. Move the camera to roughly 2.2km from the surface, the clouds should be there.
6. Now move ever closer to the surface, until you are roughly 1.4km from the surface.

Result: the clouds disappear.

Cheers.
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: Oshyan on March 23, 2007, 12:43:41 AM
This problem should be fixed in the latest update for the Technology Preview released last week. Please verify if you get a chance.

- Oshyan
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: Tangled-Universe on May 26, 2008, 04:21:28 PM
Hi Guys,

I'm digging up old threads tonight because I keep running into (probably silly) problems.

I can't get the distance-shader to work with clouds at all.
I have masked populations and surfaces with distance shaders succesfully within the same scene, but applying a distance shader to clouds seems not to work.
This is the way I connect the nodes...
Nothing happens, the clouds stay where they are without masking.
What am I doing wrong?
Thanks in advance for your time.

Martin
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: nikita on May 26, 2008, 06:45:58 PM
Did you check "Blend by shader"?
(Sounds stupid, but I make that mistake all the time)
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: Tangled-Universe on May 27, 2008, 06:27:21 AM
Quote from: nikita on May 26, 2008, 06:45:58 PM
Did you check "Blend by shader"?
(Sounds stupid, but I make that mistake all the time)

Yes I did, forget to mention that, sorry :)
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: nikita on May 27, 2008, 06:50:59 AM
Ok. Then maybe Coverage adjust (in the cloud layer) is the culprit?
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: Tangled-Universe on May 27, 2008, 01:56:29 PM
Hey that's great, it works :)
I had to adjust the coverage adjust in the cloud-node self, not in the cloudfractal-node. That worked!
Thanks a bunch!  :-* ;) lol

Martin
Title: Re: Distance Shader not working with 3D Clouds properly
Post by: Vulthoom on May 06, 2009, 12:14:59 PM
Quote from: nikita on May 26, 2008, 06:45:58 PM
Did you check "Blend by shader"?
(Sounds stupid, but I make that mistake all the time)

Aaaaaarrrrrrgggggghhhhhhhhh! I've been trying to get this to work for weeks!

Followed tutorials.
Fiddled with sliders
Disconnected and reconnected all the nodes.
Followed tutorial again from scratch.
Shouted at monitor.
Followed tutorial again from scratch.
Shouted at the hamster.
Searched the forums and........

Aaaarrrrgh! I forgot to check the Blend by Shader box.......Doh!

:-[
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