Couple of previews of...

Started by dandelO, August 31, 2009, 02:21:28 PM

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dandelO

My new grassclump shader! :)

I didn't want to really show this until it was finished and time to upload my new library volume but, truth is, I'm kind of excited about this shader myself and I probably won't get near an internet for a while yet...

Here are a couple of screenshots of a couple of variations of the grassclump shader, they won't all fit this post so I'll reply shortly, aswell...

Density = 0.25:
[attachimg=#]

Density = 1:
[attachimg=#]

...

...

...

dandelO

#1
Bigger...

Density = 1. No blendshader:
[attachimg=#]

(bucket render errors all along the halfway mark, a noticeable horizontal cutoff...)
...

dandelO

Density = 1. Powerfractal blendshader:
[attachimg=#]

dandelO

Shader preview shot (2 metres scale):
[attachimg=#]

dandelO

I assure you, each and every grassblade is unique, with translucency, changeable colours, editable seed, density, scales, etc's.

These shots are from just under a 2 metres high POV(about eye level). It's really not heavy on the renderer, far less intensive on memory aswell than a population on a global scale, and not a single object needs instancing, this is just a surface shader.

It isn't as pretty, of course, as some of the beautiful grass models that the modellers here are producing but for me this is a kind of milestone. My old Grass shader is really ugly when you get too close up, looks nice from further above or in the distance. This new one holds up well to a scale of millimetres, is far less uniform in displacement terms(not just upwards, I mean) and is a lot less complicated.

Now to try it out on distance shots to see if it works there, too...

More as it happens, I'm still working on this one...

Tangled-Universe

Very interesting results so far, looks good!
How about the rendertimes?

Cheers,
Martin

ndeewolfwood

#6
waahoou..awsome dandelo...it's just incredible for a surface layer.
maybe you find the way for grass animation  ;D can we distort, warp or transform the grass clump shader ?

Henry Blewer

Remarkable. This looks very good now. If it was at mid distance, it would be totally convincing.
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

dandelO

Render times are difficult to say here. My pc is crap, I mean REALLY! - 1.33ghz SINGLE CORE, 1gb RAM. The bigger shots are taking me about 3-4 HOURS!

I must say, though, this is much faster than when I populate objects for rendering.

Anything I render takes an absolute age. For instance, a completely seperate scene I rendered on my computer took me 25 hours+, and it hadn't even finished when I aborted it, I had my mum re-render it for comparison, I think it was around 1 hour 45 minutes on her machine!

I'm confident that this is fast because I can render it, at all! ;)

I'll share when I can...

Naoo

Hi

Great! Very usefull...


ciao
Naoo

Gannaingh

dandelO, you are a tg2 wizard ;D this looks great!

old_blaggard

http://www.terragen.org - A great Terragen resource with models, contests, galleries, and forums.

CCC

Is there a way you can bend the blades a bit? There all straight.

dandelO

#13
Sadly, you can't bend the blades, no. :(

*** EDIT:

Sadly I can't bend the blades, no. :(

I'm pretty positive they cannot be bent individually, though.
If I could do that then there would be so many things I've wished for in TG that I couldn't achieve in the past.

cyphyr

So when stones explode they can be given life again as grass clumps ? :)
Very creative and useful, thankyou :)
Richard
www.richardfraservfx.com
https://www.facebook.com/RichardFraserVFX/
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Ryzen 9 5950X OC@4Ghz, 64Gb (TG4 benchmark 4:13)