Texturing Vray Fur

[simmsimaging]

I want to use Vrayfur for some grass and have had mixed results in teh past. Want to apply a bump map and/or tex maps to the individual blades but cannot seem to get an image to map correctly onto the blades no matter which I way I try.

I get images stretched in all directions but cannot get a simple square checkerboard map to show up cleanly. Am I wrong in thinking this should be possible?

If so, what is the method?

Seems to me i should have w coordinates set to a channel, say 3 which is the default, then take my checkboard bitmap and assign it to channel 3 and use either UW or VW and it should show up nicely on the blades, but no such luck. What am I missing?

Thanks

/b

[simmsimaging]

Here's a scene if anyone has a chance to check it out. I'm defeated

www.heavyartillery.com/Uploads/posts/map_fur.zip

[3DMK]

Don't feel defeated as you were never going to win with the tool you are using to create realistic grass.
VrayFur was never designed to make realistic grass for closeups & you will get much better results scattering some patches of proper modeled grass. eg Forest Pro, Vray Scatter, etc.
You would have to ask the Vray team if VrayFur creates a proper UV co-ordinate for Z-axis, but it wouldn't be needed for doing realistic hair or fur so it may not currently have the ability to do that????

Hope this helps

[simmsimaging]

I'm aware of the limitations of Vrayfur and have worked with geo as well - there is a reason I'm approaching it this way

That is basically the question I'm asking though.

b

[simmsimaging]

Anyone at Chaos please let me know on this? I know Vlado confirmed before that we can map a gradient along the length of a vray fur strand, but I cannot get a regular map on there. It always looks stretched beyond recognition across the strand. Just not possible?

[trixian]

Have you changed the map projection to VW from the default UV?

Edit: Bah...disregard...I didn't read the previous posts properly.

[vlado]

Anyone at Chaos please let me know on this? I know Vlado confirmed before that we can map a gradient along the length of a vray fur strand, but I cannot get a regular map on there. It always looks stretched beyond recognition across the strand. Just not possible?

It's not possible currently; VRayFur does not generate UVs across the width of the strands.

Best regards,
Vlado

[simmsimaging]

Thanks Vlado that would explain it.

[simmsimaging]

So how does autograss manage to get textured blades? Is it not -basically - just prepackaged Vrayfur presets? It definitely seem to get at least some kind of texturing on the blades - at least vertical stripes to create a nice bump map.

Is there a way to replicate that with standard Vrayfur? Autograss is pretty good, but there are grass types that you cannot replicate with only 5 or 6 presets that are largely locked down.

b

[vlado]

Is it not -basically - just prepackaged Vrayfur presets?

No, autograss does not use the VRayFur primitives.

Is there a way to replicate that with standard Vrayfur?

Unforutnately for the moment, no.

Best regards,
Vlado

[simmsimaging]

Thanks Vlado. The controls and behaviour are so similar I thought it was a plugin-ized version

Thanks for the quick answers.
b