VRayFur grass

[piotrus3333]

VRayFur styler does the same thing - initial direction rgb map - but with hand painted vertex color map. rgb values translates to xyz.

I created multilayer composite map - strength of "flow" or bend is controlled by opacity of one map and scale of patches of grass flowing in one direction by scale of four maps (it's not pretty yet but still wip)
plus length and density maps. with all that you can create any look you need.

clumps I distributed with bercon tiles map, every tile has direction map to form clump of blades - pattern is still visible in mirror ball. looking bad but will be improved.

what do you think?

[piotrus3333]

styling with viewport canvas and custom brush. or you can map some predefined patterns around objects like tree trunks for example and map those like decals:

[glorybound]

How about some V-Ray Fur presets, like grass? That would be awesome!

[piotrus3333]

that is basically what I'm trying to accomplish here. controlling the look is rather simple. If you want it even simpler - you can save those composites to bitmaps. even make a composite texture from those bitmaps and just turn on and off the layer/look you need. I will probably share this grass when its good enough - a couple of different styles, ready to use in seconds.

[cheerioboy]

How are you controlling the grass so it's not straight up and down creating a flowing look to some of the blades?

There used to be a vray fur styler script somewhere but it went away ages ago.

http://forums.chaosgroup.com/showthr...finish-in-Vray

Some exploration I had done using the vray fur styler. You could create different styles, bake them to maps, and then potentially mix them with noise or other textures to break up where different styles sit on the ground?

[piotrus3333]

Some exploration I had done using the vray fur styler

yeah, I found your post some time ago - that fur looks great. but VRayFur Styler is using vertex color map - so you need subdivided geometry. And I need something working on everything, not relying on geometry. and you don't that level of control with grass (and if you need - viewport canvas + custom brush, supereasy)

but the initial direction map is the most important part:
I started with 5-layer composite map - background (grass blades straight up) and than 4 colors corresponding with directions (x and y. I used vray color maps - easy to control maximum values).
than you can mix those colors however you'd like: bercon distortion, masks, blending modes - depending on what you're going for. on top of that is duplicated background - opacity of that is quick control of maximum deviation from Z direction. if you need wind - control colors-directions, simple.

if you need more - hand paint it with a custom brush in viewport canvas

length and density map - whatever you need - composites of your design - with a house scene i simply painted some unmown grass and used distanceTex to remove grass from patches of different vegetation on the lawn.

I haven't done any testing yet but those multi layered composites doesn't seem to slow down rendering in any significant way.