Claudio Branch

I am using Max's Hair/Fur modifier to create grass. I've had excellent results with it on single renders.

One little artifact has popped up though. I am getting small black holes in a few areas. These can easily be repaired in Photoshop for a single image, but I want to use the H/F modifier on a new project where grass will be an important element in the scene.

I am afraid that I may see the same problem over 1800+ frames...(ouch).

Anyone out there seen this problem before and successfully tackled it for animation purposes?

I am using Max 8, Mental Ray (Final Gather Mode only), a skylight and a mr area light. I also have the Hair Rendering Option set to MR Prim (Mental Ray Primitive Geometry)

Koper

Hi Claudio, I have had the same prob. and the method i used around it was to create a second plane just above the hair and fur plane so that the grass comes through the second plane, then texture the second plane with a grass map. also, just check that you grass colors for the root and tip are of the same color but different shades. I haven't tried this with an animation though.
good luck.

here is some grass I made some time ago

ps. you might get more response to your problem(s) if you post in the correct forum, this one should be in the 3dsmax one

Attached Images

ga7.jpg (31.7 KB, 117 views)

Claudio Branch

Your grass looks good and I tried your suggestion, but...

...I came up with the same results. So I tried other things...

I dropped the opacity of the plane generating the grass to zero and discovered that the holes are part of the grass itself!

I changed the grass density to 100 and it just made the holes smaller.

I did a test animation anyways and there is noise flicker and holes everywhere! Basically unusable...