Thursday, January 8, 2009
Just a quick few screencaps of how I've setup my render tree in Nuke to make a slap comp preview for my renders.
I have to render the body, the head, and the hair separately due to some technical issues.
This means that I need some way to see the image as a whole and get an idea of the "look" of the character.
Enter: My nuke quick comp. Everything is setup in maya and it renders via a quick script to the directories and file naming so that I can just launch Nuke and view!
I hate sometimes how the useBackground shader in maya just doesn't translate my depth maps the way I like in Mental Ray.
Because of this I sought long and hard for a solution.
Turns out that there is one with the advent of the lovely "hidden" mip_matteshadow.
As part of the mip shader collection that is included with Maya 2008 onward, these hidden Production shaders can be lifesavers.
They're hidden mostly due to not yet being fully supported but its easy enough to create.
and you'll have a pretty new node to work with!
Give it a go.
I've included images of the output and the commands with this post.
Some people tend to forget that when you use the fast sss material with other shaders (ie: Nexus, mia_material_x, etc) that you NEED TO HOOK UP THE LIGHTMAP NODE to the other shader.
Here I've detailed 2 easy ways to hook the lightmap into the nodes.
After the connection is made you can visibly see the shader swatch update with the effects of the sss kicking in. (or just render and see)
Hope this helps!!
If you're looking to export your frames using the Nexus shader to something usable (batch render) then you may notice that sometimes NOTHING comes out.
As the build of the shader that I'm using is a little buggy, there are some settings you need to turn on to get the frames to render output.
Make sure the Contact sheet option is disabled (sometimes it works, sometimes it doesn't).
Start your batch and if you have settings that match mine on the left it should work.
Then have fun comping!
(maybe I'll show my shading network for Nuke soon)