Planetside Software Forums

General => Image Sharing => Topic started by: A4size on December 22, 2009, 12:40:28 pm

Title: Snow
Post by: A4size on December 22, 2009, 12:40:28 pm
It is the old one.

Download 3200×2000Pixel
http://a4size-ska.deviantart.com/art/Snow-147628828

Title: Re: Snow
Post by: Linda McCarthy on December 22, 2009, 10:59:02 pm
Awesome snow cover!
Title: Re: Snow
Post by: EoinArmstrong on December 23, 2009, 04:32:01 am
That's excellent surfacing - I really need to start playing with intersections etc.
Title: Re: Snow
Post by: Tangled-Universe on December 23, 2009, 04:50:42 am
Very nice looking snow. I'd rather call it icy snow since it's not looking like just fallen fresh snow.

There are a couple of ways of achieving this effect. Using one of the 3 intersect underlying methods or just use an offset for displacement in the snow surface layer. I think you have used the latter, but I'm not entirely sure.
Which way did you do it?

Cheers,
Martin
Title: Re: Snow
Post by: Hannes on December 23, 2009, 05:13:03 am
Fantastic snow. I like the falloff. I would really love to see this sparkling reflection on the snow. Do you know what I mean? Like this:
http://images.google.de/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/2/23/Sparkling-snow.sierra.jpg&imgrefurl=http://commons.wikimedia.org/wiki/File:Sparkling-snow.sierra.jpg&usg=__9UEhC1dkplpi__Yz1mLJ0P89vx8=&h=1524&w=2032&sz=486&hl=de&start=15&um=1&tbnid=T58m90iglta2HM:&tbnh=112&tbnw=150&prev=/images%3Fq%3Dsnow%2Bsparkling%26ndsp%3D20%26hl%3Dde%26client%3Dfirefox-a%26rls%3Dorg.mozilla:de:official%26sa%3DN%26um%3D1
(OH GOD, what a link!!! :o)

...but I don't know how to achieve this naturally in TG.
The ground texture is a bit too dark for my taste. I'd really love to see some improved version!
Title: Re: Snow
Post by: Tangled-Universe on December 23, 2009, 06:54:11 am
Quote from: Hannes on December 23, 2009, 05:13:03 am
Fantastic snow. I like the falloff. I would really love to see this sparkling reflection on the snow. Do you know what I mean? Like this:

link

...but I don't know how to achieve this naturally in TG.
The ground texture is a bit too dark for my taste. I'd really love to see some improved version!


That's not easy to achieve, I tried it here:
http://forums.planetside.co.uk/index.php?topic=7299.msg78079#msg78079 (http://forums.planetside.co.uk/index.php?topic=7299.msg78079#msg78079)
Title: Re: Snow
Post by: Hannes on December 23, 2009, 07:06:06 am
Hey TU, that's pretty close!
Title: Re: Snow
Post by: Dune on December 23, 2009, 12:06:05 pm
I've done this sparkling with an only white (contrast 2-5) extra PF with tiny scales, color slider to -1.5 or so (with or without a reflective shader), and an extra blendshader. It kinda works.

---Dune
Title: Re: Snow
Post by: A4size on December 23, 2009, 07:01:54 pm
I try to publish the data and today this snow

The principle is a very easy thing.
Title: Re: Snow
Post by: dandelO on December 23, 2009, 10:19:09 pm
I like this, very nice snow. I agree about the sparkling effect...

Quote from: Hannes on December 23, 2009, 05:13:03 am
Fantastic snow. I like the falloff. I would really love to see this sparkling reflection on the snow. Do you know what I mean? Like this:
http://images.google.de/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/2/23/Sparkling-snow.sierra.jpg&imgrefurl=http://commons.wikimedia.org/wiki/File:Sparkling-snow.sierra.jpg&usg=__9UEhC1dkplpi__Yz1mLJ0P89vx8=&h=1524&w=2032&sz=486&hl=de&start=15&um=1&tbnid=T58m90iglta2HM:&tbnh=112&tbnw=150&prev=/images%3Fq%3Dsnow%2Bsparkling%26ndsp%3D20%26hl%3Dde%26client%3Dfirefox-a%26rls%3Dorg.mozilla:de:official%26sa%3DN%26um%3D1
(OH GOD, what a link!!! :o)

...but I don't know how to achieve this naturally in TG.
The ground texture is a bit too dark for my taste. I'd really love to see some improved version!


Of course, now we can use fractals as specular functions. :) Tiny little fractals...

[attachimg=#]
[attachimg=#]

That's pretty rough but it's an idea.
Title: Re: Snow
Post by: A4size on December 24, 2009, 02:47:01 am
Data released

http://forums.planetside.co.uk/index.php?topic=8372.0
Title: Re: Snow
Post by: Dune on December 24, 2009, 03:22:38 am
This is a (bad) example of my shiny snow crystals. As described earlier.
Title: Re: Snow
Post by: Tangled-Universe on December 24, 2009, 03:53:54 am
Thanks A4 for posting the tgd

@ Dune & DandelO:

The nasty thing about TG's specularity is that it is virtually impossible to get evenly bright sparkles all over the place instead of only "below" the sun.
Maybe you can force this effect using specular functions, but I haven't dug into it yet. At the time I developed my snowshader I didn't have this functionality.
Seems worth a try :)

Martin
Title: Re: Snow
Post by: Dune on December 24, 2009, 04:04:50 am
Perhaps with some extra suns, that shine no light except specularity...
Title: Re: Snow
Post by: Tangled-Universe on December 24, 2009, 04:18:31 am
Quote from: Dune on December 24, 2009, 04:04:50 am
Perhaps with some extra suns, that shine no light except specularity...


Ghehe, very logical suggestion and I tried that too, but that functionality is really crappy in TG.
When I added a "specular only" light it still brightened up my images like a normal light would do with all the bells and whistles.
I forgot about it that I should report this to Matt.
Title: Re: Snow
Post by: Dune on December 24, 2009, 05:01:38 am
Did you also try a nice spread of tiny, shiny fake stones? They should catch and reflect light from several angles...
Title: Re: Snow
Post by: Hannes on December 24, 2009, 05:11:53 am
Great idea!!
Title: Re: Snow
Post by: Tangled-Universe on December 24, 2009, 06:20:53 am
Quote from: Dune on December 24, 2009, 05:01:38 am
Did you also try a nice spread of tiny, shiny fake stones? They should catch and reflect light from several angles...


That's what I did here:
http://forums.planetside.co.uk/index.php?topic=7299.msg78079#msg78079 (http://forums.planetside.co.uk/index.php?topic=7299.msg78079#msg78079)

Also not easy to set up. Scales of stones have to be adjusted for every scene, as well as the specularity and brightness of diffuse color.
That's also the reason why I didn't update the snow-pack with this feature, too laborous.
Title: Re: Snow
Post by: Hannes on December 24, 2009, 07:01:44 am
TU, this is really excellent! I didn't know you used a fake stones shader. Almost like the real thing.