Multipass Compsiting in Nuke from Maya MR

diffuseMaterialColor - base

diffuseIrradianceNoShadow - add

indirect - add

specularNoShadow - add

reflection - layer mode Plus

AO - mask & Multiply

matte - alpha & pre-mutiply

<for the background>

AO - mask & multiply

shadowRaw - mask & multiply

PassContributionMap

-create under Render Layer

seperate scene images by Light / Object by adding them accordingly.

Mental Ray Shadow Flickering

Ways to suppress/reduce flickering in mental ray render

1. using raytrace shadow + GI + FG

    Light Attribute - increase shadow rays of ray trace shadow

    Render Settings > Final Gathering > Final Gather Tracing :

        Final Gather Mode = Optimize for Animations

        set Max/Min Radius

2. using raytrace shadow + GI + Occlusion

    ?

3. using mental ray shadow map + GI + FG

    Light Attribute > Shadows - check using mental ray shadow map

        set Resolution/Sample/Softness as you like

4. using IBL (Image Based Lighting) without photon emission(?)

Beauty Pass =

Beauty Pass =
diffuse + indirect + specular + reflection + refraction + translucence + add + opacity.


>AE Compositing from the top layer


opacity - alpha (translucent part)

matte - use as matte channel

<pre comp>

specularNoShadow - add

reflection(&refraction) - screen

indirect (GI+FG) - add

AO - multiply

directIrradianceNoShadow - darken

shadow - difference

diffuseNoShadow - normal

</pre comp>

control instanced object of particles/nparticles, Maya

- select multiple objects
- go to nDynamics menu > nParticles > instancer
- in the option menu, select particle
- per particle attr > add general
- add userScalarPP attr
- write expression for the attr.
ex)
- go to Instancer and change object ID to userScalarPP

Remove banding in gradient, AE

Remove banding in gradient.

- increase "ramp scatter" of ramp effect.

- add 4 color gradient effect (5~10%, color mode)

- add grain effect (just a little bit)

- work and export in 16/32bit color and compress it to 8bit

loop, oscillate, reverse, hold nCache - Maya

- open Trax Editor.

- select object with nCache attached.

- select ncache clip in Trax editor.

- and

Extend lower corner of the clip to "loop" (repeat)

Extend top corner of the clip to "hold" at the last frame.

Check "oscillation" in the attr editor, and extend lower corner of the clip in the Trax editor.

Check "reverse" in the attr editor to play backwards.

*if you want to attach one cache file twice you can attached cache file again.