Grassy area - scatter test

[peterguthrie]

well I'm glad I uploaded that grass test here, I had been looking at it for so long I couldn't see what the problem was and jacksc02 and Brett spotted it straight away. At some earlier point I had scaled the patches of grass x1.5 in x and y, hence the grass looking a bit wide and flat. Here it is again:



cheers fellas

[jacksc02]

yeah much better!
I feel like I need to do a grass render now.......

[simmsimaging]

Looks great Peter!

b

[rivoli]

I feel like I need to do a grass render now.......

exactly what I felt..

I must say these last images from percy and peter do look amazing, really great effort.
here's my go at it, still working on it. what I find tough is modelling the starting patches, even though they seem good if taken alone, once I scatter them around the overall image it's not really convincing.

[sv]

well I'm glad I uploaded that grass test here, I had been looking at it for so long I couldn't see what the problem was and jacksc02 and Brett spotted it straight away. At some earlier point I had scaled the patches of grass x1.5 in x and y, hence the grass looking a bit wide and flat. Here it is again:



cheers fellas

Peter that is just immense...
Just want to get on that surface and hack it up with a golf club or cricket bat or just bounce around on it!
really great render... can really feel it!

[yyk]

well I'm glad I uploaded that grass test here, I had been looking at it for so long I couldn't see what the problem was and jacksc02 and Brett spotted it straight away. At some earlier point I had scaled the patches of grass x1.5 in x and y, hence the grass looking a bit wide and flat.

cheers fellas

Hi Peter, awesome work :P I'm doing tests but am not even near that quality. Please if you find the time to answer, how many different blades are you using? And how about the rendertimes, would this be usable in a big project with a scattered forest around the lawn? I'm constantly running to memory problems and am curious about this aspect.

[peterguthrie]

thanks yyk, the grass I used was similar to the short grass here: http://www.peterguthrie.net/blog/200...torial-part-2/ except going more in 1 direction rather than so random, and I think i chopped the top of one of the blades!

[Karba]

Animation test of grass
http://karba.eol3d.com/VRayScatter&VRayStorm/wind.avi

[Da_elf]

are you using a map to control rotation? like a wave map or something?

[Karba]

I used color animated noise with different phase and offsets for rotation map.
Like this

[jonahhawk]

20 Scatter objects 100,000 each x 30,000 pollies per proxy. image is 5120x1600 render time 42 minutes on Dual Xeon, used about 4GB Ram the whole time. No random rotations though. I've found that uses way more RAM. So I think I'll just make randomly rotated proxies and use multiple scatters from now on.

[Da_elf]

I used color animated noise with different phase and offsets for rotation map.
Like this

cool. i find alot of people make the mistake of ONLY animating the phase which doesnt give the sence that the wave is moving. just that its changing.

[rivoli]

tweaking..

[simmsimaging]

That's looking pretty cool. Maybe bit more yellow in the grass to match the ground colour around the dry/dead spots?

b

[jacksc02]

does look nice!
Maybe the highlights a bit too strong, try with some sub pixel mapping?