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 Post subject: Create Grass
PostPosted: 14 Nov 2009, 03:23 
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Joined: 02 Oct 2009, 23:50
Posts: 81
Location: Greece
Makes strands on a given surface that are curvy to look like grass blades.

EDIT: minor changes to allow independant Hue/Sat/Lum/Alpha color variance
added a shader preset for the grass, copy it to your "DSPresets/Shaders/Material" folder


Enjoy at your own risk


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Create Grass v1.1.rar [4.91 KiB]
Downloaded 1222 times


Last edited by nassosy on 14 Nov 2009, 16:42, edited 1 time in total.
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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 14:38 
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Joined: 08 Jun 2009, 23:02
Posts: 122
Location: Near Paris
Hey Nassosy,

Here is a nice compound !!

I've just a little pb with the color of the grass :

Image

Thanks for your work

Phil

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Photoshop CS6 | C4D R15 x64 |ZBrush 4 | Softimage 2012 SP1 x64


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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 16:26 
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Joined: 02 Oct 2009, 23:50
Posts: 81
Location: Greece
Make a shader
assign it to the point cloud
in the Render Tree/Material editor
add a "Color Attribute" node to you material
set it to "Color" or "StrandColor" and connect its
output to the diffuse input of your illumination shader (phong, blinn, contant, etc)

Unfortunately in 2010 SP1
the "StrandColor" (the color gradient) doesn't work for me,
it always returns the default color (white)
don't know why.
The "Color" ICE attribute works, but there won't be any gradient.


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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 16:54 
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Joined: 08 Jun 2009, 23:02
Posts: 122
Location: Near Paris
Wow I forgot to apply color directly to the point cloud ...

Gradient color works here and the strand too

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Photoshop CS6 | C4D R15 x64 |ZBrush 4 | Softimage 2012 SP1 x64


Last edited by wireframex on 14 Nov 2009, 17:00, edited 1 time in total.

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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 16:59 
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Joined: 02 Oct 2009, 23:50
Posts: 81
Location: Greece
Yes in 7.01 both attributes work,
2010 sp1 is another story :(


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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 17:02 
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Joined: 08 Jun 2009, 23:02
Posts: 122
Location: Near Paris
Have you a lot of pb with 2010 SP1 ?

Maybe I need to keep 7.01 and 2010 working together 8-|

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Photoshop CS6 | C4D R15 x64 |ZBrush 4 | Softimage 2012 SP1 x64


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 Post subject: Re: Create Grass
PostPosted: 14 Nov 2009, 17:34 
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Joined: 02 Oct 2009, 23:50
Posts: 81
Location: Greece
Solved it by copying the "StrandColor" to a custom color ICE attribute and using that in the RenderTree


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 Post subject: Re: Create Grass
PostPosted: 17 Nov 2009, 09:34 
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Joined: 17 Jun 2009, 14:49
Posts: 391
Thank you nassosy


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 Post subject: Re: Create Grass
PostPosted: 30 Nov 2009, 06:18 
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Joined: 09 Jun 2009, 23:47
Posts: 88
works like a charm!
great, thanks nassosy


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 Post subject: Re: Create Grass
PostPosted: 03 Dec 2009, 14:53 
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Joined: 11 Jul 2009, 13:13
Posts: 46
Very nice! Looks very promising!
I will download it and try it out next time I need grass.

Did anybody do a benchmark yet to compare strands with XSI Hair?
It would be interesting how each system performs in the viewport and at rendertime.


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