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OskarSwierad

Snow terrain (mantra shading and render)

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Hi,

 

Maybe you stumbled upon my video on facebook Houdini Artists. Still, I cross-post because I'd like to get your critique - which is something hard to get on facebook!

I'm working on a snow-covered terrain shading and rendering in Mantra. The geometry was sculpted by another artist but I added some details with displacements. I want to achieve a look of smooth, almost untouched snow covering rocky highlands (not Arctic glaciers). What can I improve?

 

~20 min per frame at 720p on Intel i7-3770

 

Still frame:

terrainRender_v67_0180.jpg

For comparison, original terrain model (plain diffuse material):

terrainRender_v67_0180_lambert_nodisp.jp

Edited by OskarSwierad
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That's really cool! For my money, the shadows should have more blue, there should be some sharper lines and cusps, the snow is a little too glittery, and the white 3d particles resting on top look like white 3d particles resting on top.

594827101-sunshine-over-snow-drift-getty

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Thanks. I agree with all of that :)

As for the blue color, you posted a very nice reference. Maybe my sky is too desaturated (though I intentionally wanted to avoid 'polarizing filter' look).

Edited by OskarSwierad

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Nice work!  

 

As a critique it's simply a boring scene, where as that photo posted above is interesting; sun flare, rock, deeper blue polarised sky.

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Thank you both.

 

I just watched Outerra's FMX slides on procedural terrain with interesting features - not just generic. Many similar problems which I encountered were approached in clever, simple ways.

For example:

- they add horizontal displacements after the typical height noise

- slope calculations drive many things: random pebbles placement, more or less random disp, ...

- mountain peaks are extra-sharpened

I recommend reading it if you're interested in the topic - http://forum.outerra.com/FMX/presentation/

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