Another try at creating dunes. I added a luminosity noise for some sparkle in the sand grains as well.
thanks for the hard work and sharing
david
I would repeat the ridged fractal on a smaller scale (less displaced of course), mixed with some medium scale perlin, instead of the lines.
But there are dunes like this with the lines running through the main features as that was the inspiration. The pattern i can not get is this. In the image notice how there elongated but nice and wavy as well. The small scale lines appear to be soft clamped and that is also hard to get down.
Have you had a look at Tangled-Universe's sand shader at NWDA? His sand comes in ridged patterns.
I have and not exactly the patterns i am looking for. I might keep attacking this some more.
Martin's dunes use a sine based node network, I think. These would need a sawtooth based node set up.
I tried to combine the basic terrain from here with the technique described in this thread:
http://forums.planetside.co.uk/index.php?topic=843.0 (http://forums.planetside.co.uk/index.php?topic=843.0)
DJ
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Looks good so far. I do recall that thread before it was buried. The crest function ideas were nice. Too bad that never happend.
This is looking good. The only problem is the downwind side of the dunes. They should be smoother. I have not found a way to do this yet.
Quote from: njeneb on January 24, 2010, 08:43:30 AM
Martin's dunes use a sine based node network, I think. These would need a sawtooth based node set up.
I had to grab this screen shot! Thanks for posting it. 8)