Shave and haircut wont work on render layers!

[mickeal_alex]

Hello everyone, i am new to this forum, and i have been running into some problems with shave and haircut.I have been trying to create different passes for the hair, and i get a blank screen for the hair on occlusion, shadow, specular, even Color wont show, and i know that only using Hair primitives will work, but as soon as i create a pass, the hair doesnt appear. I also tried turning off the Ovveride geometry shader and nothing. Does anyone know a way to fix this?

[mickeal_alex]

I also use the tutorial from DT, and turned on in the Shave Gobals, the Output Hair Images and it doesnt create anything.

[vmarines]

try making a copy of the master render layer and add to the copy master layer the render pass example oclussion

try that

[andy gee]

Hi

I posted this a while ago. These are the results made with passes out of Maya with shave and haircut.

Although some are standard render layers, Simply turn off geometry shading for the hair and make sure your in hair primitives mode in the shave globals. Then just add what ever texture you want to your hair, which Maya can take to create the passes and hit render:

http://www.digitaltutors.com/forum/s...ad.php?t=20086

Andy Gee

[andy gee]

Hi ALL

I just wanted to update this post because I have learned some new tips for getting passes out of Maya using shave and haircut.

First off

Be in Hair Prims mode

Second

Turn OFF geometry Shade Override for your hair.

Third

apply any shader you want to the geometry shave display NOT the shave nodes themselves (note that maya materials work better for passes than mental ray ones)

If you apply it to the shave nodes themselves, then Maya will get confused and wont render the hair properly. Tested on my scene results the render didnt have hair and my character was bald.

Forth

By default Shave and haircut sets your renderer for hair prims to rasterizer if you are using mental ray. Even if you create an override and change it to say scanline or raytraced it will render out as rasterizer.

To turn this off simply go to your shave globals and turn OFF Safe Mode

Now you will be able to use what ever renderer you like.

Why Turn it OFF ? whats wrong with rasterizer in the first place you say. Well Yes it does render out the hair faster than scanline but it does create pixelation on say wrighting. I had a character with a logo on his chest and rasterizer made it all pixelated. So Scanline was the way to go.

Fifth

add your passes as normal now, because you have a standard shader on the display shave geometry it should dish out passes as normal.

Hope this helps

[andy gee]

amended shave and a haircut tips I have learned

to get shave to appear in render layers select all objects create a new layer
select in outliner all of the shave display geometry and add that to your render layer. you will now have shave render in that layer but not be displayed

Also for quicker fur render with production rapid fur setting for mental ray.

Still can't figure out how to do tip fade on my own shaders but i will crack it one day

[johnny]

Andy thanks for this!! Im messing with shave at the moment, and Ive saved a bunch of yr posts in favourites!

[andy gee]

Your welcome Johnny

If you figure out how to get tip fade on your own shaders drop me a line please !

I have been in contact with a guy who used shave and a haircut on narnia who also had the same issue. He suggested using puppet shaders available on high end 3d
aka creative crash.

I will look into this and let you know my findings

andy