help with grass

[guilded]

I'm trying to make some grass and i'm following along on

 

http://www.hash.com/am2004/Modeling/Hair/index.htm

 

but when i change the color of the blades from green to yellow on the diffuse color timeline, the color changes in blocks--that is it begins with a green, then abruptly changes to a lighter green, and then to a yellow. there seems to be no gradient.

[markeh]

You'll also notice that on a progressive render that it looks proper, but on a final render you get what you described. When the new 11 hair came out, hash decided that it wasn't important enough to get that detailed with color gradation. I haven't verified this to be true for sure in 12 or 13. You can still get good looking grass though anyway. If you were going to be close enough to see a lady bug on a blade, it would be better to model the blade with a few instances and use a gradient material on the model etc. The rest of the grass could be in the background.

 

Edit: I just tested it in 13 and I think they are doing a much better job with the gradation. I upped the number of control points to 8 and made the bow = 0 and it looked like a very smooth transition. In any case, upping the number of control points will get better results as far as gradation is concerned. I also did the same test in 11 and - yes once again upping the number of control points will get you better results there as well.