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Alaska Blue Lake

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Alaska Blue Lake

Unread postby xilofoton » Wed Nov 02, 2016 2:43 pm

Dem_Alaska_v011_Comp_01.jpg

Dem_Alaska_v012_Comp_01.jpg


Hi,

in a nutshell the displacement is driven by raw LIDAR satellite DEM (TIFF)
http://viewer.nationalmap.gov/basic/

Everything else is procedural, ie the snow cover is based on height, slope and wind exposure.

Scales are just by eyes, the trees are too virulent at certain areas... so it needs more informations from the real site.
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Re: Alaska Blue Lake

Unread postby David_A » Wed Nov 02, 2016 10:26 pm

Very interesting atmosphere. Are you using the PBR for these?
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Re: Alaska Blue Lake

Unread postby xilofoton » Thu Nov 03, 2016 11:01 am

Yes, PBR, path traced depth map ;)
Cheap and noise free, with comped glows it gets some illumination from the snowy areas.
Setting proper colours is much more important than doing physically based simulation (which cannot be accurate within RGB space and without wavelenght dependent scattering, especially in landscape scale environments).
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Re: Alaska Blue Lake

Unread postby Germanobanano » Thu Nov 03, 2016 12:21 pm

Nice!

About the PBR volumes for environments, playing with the absorption and scattering values you can get some realistic aerial perspective. I have to look more into it, but I used a volume to simulate rayleigh scattering and another for mie scattering.
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Re: Alaska Blue Lake

Unread postby daaims » Fri Nov 04, 2016 12:39 am

Really good damn atmos' here !

Cheers ;)
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Re: Alaska Blue Lake

Unread postby xilofoton » Fri Nov 04, 2016 11:51 am

Dem_Alaska_v015_Volume_03_PS_v02.jpg


Thank you guys!

Now I tried rayleigh+mie like scattering with 3 volume containers. This half resolution took more time to render than the previous HD renders. I can avoid the volume noise only with the sample clamp. Earlier with the legacy I tried similar multi volume setups, it was faster and less noisy.
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