Planetside Software Forums

General => File Sharing => Vegetation => Topic started by: ThinkPink on August 09, 2007, 12:12:21 pm

Title: functional grass
Post by: ThinkPink on August 09, 2007, 12:12:21 pm
today, i was experimenting with functions, trying to understand what functions are for and how i can use them.  :-\
After reading some of the tutorials, clicking in the node network, doing some settings and after many many many test renders i got an render image and my first thought was "Ahhh ... what's that". It was not the result i want to get (i was looking for same typical dunes "waves" for a desert image). So you can see, I don't understand this functions really :(

perhaps for the most of you 'hight-levels' this will be nothing new, but i've been very suprised and i think it looks funny - like dry grass or an endless grain field - what do you think?

In this sample the base of all are the Snow shaders of Lucio http://forums.planetside.co.uk/index.php?topic=753.0 (http://forums.planetside.co.uk/index.php?topic=753.0). But i think, you can also use a normal surface shader.
Instead of white snow i used yellow sand in different colours (perhaps i should try it with several green colours).
The functions for the 'grass' you can see in the snapshot below:
The settings are:
constant vector 01:   1000     1000     1000
constant scalar 01:      800
displacement multiplier in 'Sand Basis':     1000

Camera position is very high!  3100m!
Render quality of the sample: 0.5
Render time (500x350 px):  1:13:35
Title: Re: functional grass
Post by: rcallicotte on August 09, 2007, 12:21:08 pm
This does look pretty good.  I want to experiment. 

Thanks!
Title: Re: functional grass
Post by: moodflow on August 09, 2007, 01:38:31 pm
Wow, nice work for sure.  I've been trying to do this myself, and was successful, but it took ages to render, so I abondoned it.

8)
Title: Re: functional grass
Post by: Volker Harun on August 10, 2007, 03:05:42 am
Very good result, thanks for sharing.
Title: Re: functional grass
Post by: old_blaggard on August 10, 2007, 09:32:19 am
Can you tell if there's any difference in how much RAM this takes up and how much RAM is used in a grass population?  This could potentially be a good replacement for use in those scenes with billions of blades of grass.
Title: Re: functional grass
Post by: Lucio on August 10, 2007, 12:01:31 pm
It's a very interesting idea!
Title: Re: functional grass
Post by: ThinkPink on August 14, 2007, 03:57:52 am
here is the complete render: http://forums.planetside.co.uk/index.php?topic=2037.msg19951#msg19951 (http://forums.planetside.co.uk/index.php?topic=2037.msg19951#msg19951)