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Old 02-16-2013, 04:45 PM   #1
GoldStandard3D
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Large grass field using ICE and maps Help!

Hello This is simple I am sure but I don't know how to do this.

I have tried making large grass fields using stands, hair and polygons but all take to long to render. Is there a way to use ICE to make a large grass field out of images of grass that always face the camera, like a sprite? please help.
 
Old 02-17-2013, 09:48 PM   #2
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You need it to be animated? If not, why not going heavy on instancing?
And what rendering engine? The same thing that will make MRay kneel down and beg might be perfectly fine in Arnold.
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Old 02-18-2013, 11:43 AM   #3
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Not sure but you could try looking into Zybrand Grass
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Old 02-20-2013, 03:48 AM   #4
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Hmm, I have read both your posts and they where helpful and I have heard of Zybrand grass but it doesn't seem like it can make large fields since its based off of strands, and second I have had problems installing it.

I am still In the process of learning xsi and as a matter of fact I have the student version, so getting a plugin is not an option for me yet. I am curious about instancing and sprites because in video games they use these techniques to create massive grass fields that render instantly. So i was wondering how to do the similar thing in xsi.

Ohh and this case the grass doesn't need to be animated.

Last edited by GoldStandard3D : 02-20-2013 at 03:55 AM.
 
Old 02-20-2013, 05:16 PM   #5
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whats the problem with strands?
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Old 02-21-2013, 04:42 AM   #6
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Pooby I am sure you have loaded a scene up in XSI with about 3mil strands and then watched the renderer take 5mins to complete. That's about how long it takes my 2.2GHz quad core HP laptop to render a large grass scene without the character and final gather added.

So I was wondering is there a faster way in XSI of doing this? maybe sprites?
 
Old 02-21-2013, 11:55 AM   #7
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if your sprites have opacity and you will be using a raytracer, thats trouble... it could work with a rasterizer kind of renderer
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Old 02-21-2013, 01:16 PM   #8
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another thing that comes to mind (wether you go sprites or strands) is to look for ways to optimizing your emission according to camera distance and frustum, that can save you loads of RAM, which is propably your biggest bottleneck.

here is some nice blog post about that:
http://suesauer.blogspot.com.br/201...ce-strands.html
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Old 02-21-2013, 09:35 PM   #9
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Yes gustavoeb my laptop rendering the grass far off or out of sight is playing a large roll in the render time, but this is also where my knowledge stops. I know how to setup and edit ICE to make strands and such but when the grass is not seen or is out of view(behind a hill) I don't know how to set that up.

I also have been unsuccessful in finding a tutorial on how to make sprites in XSI.
 
Old 02-21-2013, 09:35 PM   #10
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