[oz42]

For a long time now, I've tried to find some acceptable setting for atmospheric haze - where objects (mountains) in the distance visually fade, look slightly bluer and have less contrast.

Does anyone have some Maxwell Atmosphere / Aerosol settings that are good at producing this effect.

What I'm after is something like the following (please bear in mind that this Amazing image is from a RealTime (!!) render engine called Outerra (watch the video, it's pretty amazing!))


taken from http://www.outerra.com/wgallery.html

[Fernando Tella]

I'd try with volumetrics.

http://www.maxwellrender.com/V3/feature/volumetrics

[seghier]

use volumetric
outerra ; everyday we see new render engine

[seghier]

this is like terragen

[rusteberg]

you could set something like that up quite easily with maxwell. for example here's how this one was setup:



Here the distance from the camera to those mountains in the back is a couple of kilometers



And the material applied to the constant volumetric object is a simple lambert material with a rgb value of 245, 245, 245 in the Ref 0



from there you can experiment with all sorts of things

[eric nixon]

Great image ...would be nice to set the density to 0.0001, nice to have that option, any thoughts? And also comparison render speed with atmos on/off?

[Fernando Tella]

Great image ...would be nice to set the density to 0.0001, nice to have that option, any thoughts? And also comparison render speed with atmos on/off?

Maybe you can get an even thinner effect by lowering the opacity of the volumetrics material.

[hatts]

Bravo rusteberg

[seghier]

nice work rusteberg
the haze can applied to the horizon and the mountain only

[eric nixon]

I had a go, no forground yet, 40 min render sl19, bit slow IMO.. used a material with 10% layer weight as per Fernandos suggestion, vol density is 0.001. Having such a see-through material doesnt seem to cause any slowdown, far mountain on the right is about 3 kilometers away.



I use a refractive lambert, not diffuse because I believe a diffuse lambert represents smoke / sand storm / thick dust, not water vapour.

I'm just rendering a comparison using diffuse lambert (10% opaque) to see what the speed difference is, will update this post when thats cooked.

ok... 33 mins with the lambert. Notice the abscence of 'god rays' coming from left over the near mountain.


Final image, no volumetric - 25 mins, but I suspect that with some reflective forground objects the time difference may become greater.

[oz42]

thanks for all the tips guys! I'm loving the images by rustberg and eric, this is exactly what I was looking for. I'll continue my experiments...

[eric nixon]

I just tried to map a gradient (as layer weight) onto the volumetric, to try and get a ground fog effect. Maxwell crashed immediately after voxelization.

[3dtrialpractice]

I just tried to map a gradient (as layer weight) onto the volumetric, to try and get a ground fog effect. Maxwell crashed immediately after voxelization.

Yes this is what volumetrics NEED.. the ability to texture gradients (ramps) into the density and color properties

[seghier]

I just tried to map a gradient (as layer weight) onto the volumetric, to try and get a ground fog effect. Maxwell crashed immediately after voxelization.

nice renders
can you show the setup of material ?

[3dtrialpractice]

i get that one can get a haze environment render but not sure how the performance of a detailed scene in maxwell will reallly be worth surrounding a huge area (hundred + of meters) with volumetric cube.

as maxwell has no atmospheric, infinite ground plane, and sky/cloud rendering good to know about another engine that could be used as to do BG matte renders