Hello!
I'd like to make a very realistic landscape of Alpes. I've already DEM file that works well. But, i don't find how to do good snow. I read many tutorials about making snow deep but i don't have a very good result. I'd like to make an image like this one (from site of terragen) http://ben.bardou.free.fr/temp/ref.jpg (http://ben.bardou.free.fr/temp/ref.jpg)
Do u have some shader like this? Where can i find the?
Thx a lot!
This image is fairly easy to reproduce. The key is having a terrain like this in the first place, with all this erosion.
But then, secondly, it depends a bit on whether you want to make a close-up and distant shot, like in your example image.
For a distant shot this is relatively easy. You can use a regular surface shader, coverage near 1, and a pretty high max slope contraint. That should be it.
Alternatively you can play with the intersect underlying feature to give preference for the snow to primarily cover the depressions (your eroded slopes). Ususally you need a second surface layer to also cover a bit of the rises (so intersect underlying switched off on this second surface layer). Intersect underlying sometimes requires another compute normal shader before the surface, you will have to experiment here.
Technically, that's all you need.
You can also have a look at this thread: http://forums.planetside.co.uk/index.php?topic=7152.0 for another example render similar to yours.
Lastly, if you are up to make perfect close up snow patches, take a look at this NWDA preset here: http://www.nwdanet.com/buy-packs/details/25/7/preset-packs/tu-snow-pack
Here is one other example rendered using the TU Snow Pack: http://forums.planetside.co.uk/index.php?topic=7072.0
Regards,
Frank
Ok
I will try this and show you the result.
Thanks!
Quote from: FrankB on August 08, 2009, 01:04:19 PM
This image is fairly easy to reproduce. The key is having a terrain like this in the first place, with all this erosion.
But then, secondly, it depends a bit on whether you want to make a close-up and distant shot, like in your example image.
For a distant shot this is relatively easy. You can use a regular surface shader, coverage near 1, and a pretty high max slope contraint. That should be it.
Alternatively you can play with the intersect underlying feature to give preference for the snow to primarily cover the depressions (your eroded slopes). Ususally you need a second surface layer to also cover a bit of the rises (so intersect underlying switched off on this second surface layer). Intersect underlying sometimes requires another compute normal shader before the surface, you will have to experiment here.
Technically, that's all you need.
You can also have a look at this thread: http://forums.planetside.co.uk/index.php?topic=7152.0 for another example render similar to yours.
Lastly, if you are up to make perfect close up snow patches, take a look at this NWDA preset here: http://www.nwdanet.com/buy-packs/details/25/7/preset-packs/tu-snow-pack
Here is one other example rendered using the TU Snow Pack: http://forums.planetside.co.uk/index.php?topic=7072.0
Regards,
Frank
Hi frank..
Just a simple question..What does the coverge does?
its has a value of 1 so what does that mean? the whole mountain?
Thnx!
With coverage, think of 1 as 100%. It works this way for some other setting as well.
Thnx!
sorry for double post...*_*
Can google sketup file or aucad 3d file can be incorporated to Terragen?
Wavefront obj files work best. Lightwave object files also work. Try downloading PoseRay. It might handle Google sketch up format.