Multimatte creation/assignment

[Yannick]

Hi,

is there a chance for Chaos Group to add a tool to automatically create and create multimattes?
At my previous job, our developer created this tool that created a window where all the shaders were listed. Then a button allowed to add the material ID attribute then assign a value to it. Another button allowed to create the multimatte render element (and switch on the Use materials IDs and Consider for Anti-Aliasing) and automatically assigned the RGB ID based on the number of shader ID. It was starting from 1 up to the number of shaders.
The same window once the ID and RE were populated, allowed to manually change the ID allocation. This was practical if we need a particular shader to be in a designated RE multimattes.

That way in 2 clicks we could have the scene ready for mattes.

I am asking that as if Chaos Group was to have something, this would follow Vray versions and save your clients a lot of time.

Let me know if you would consider it?

Thanks,

Yannick


PS: I know Deex tool does something simillar, but the ID generated are random number and it doesn't create the RE multimatte.

[FSGFX]

+10

an attribute manager would be really cool...
also for assigning IDs to selection sets...

[bigbossfr]

Hi,

is there a chance for Chaos Group to add a tool to automatically create and create multimattes?
At my previous job, our developer created this tool that created a window where all the shaders were listed. Then a button allowed to add the material ID attribute then assign a value to it. Another button allowed to create the multimatte render element (and switch on the Use materials IDs and Consider for Anti-Aliasing) and automatically assigned the RGB ID based on the number of shader ID. It was starting from 1 up to the number of shaders.
The same window once the ID and RE were populated, allowed to manually change the ID allocation. This was practical if we need a particular shader to be in a designated RE multimattes.

That way in 2 clicks we could have the scene ready for mattes.

I am asking that as if Chaos Group was to have something, this would follow Vray versions and save your clients a lot of time.

Let me know if you would consider it?

Thanks,

Yannick


PS: I know Deex tool does something simillar, but the ID generated are random number and it doesn't create the RE multimatte.

I can add this on the toolBox. It is very easy.
Like my lightLister, but with material (the lights lister is completely free)

[Yannick]

I can add this on the toolBox. It is very easy.
Like my lightLister, but with material (the lights lister is completely free)

looks good. Is it released?

Thanks,

Yannick

[bigbossfr]

The lights lister, yes. You can use it with the demo (but if the demo expires, you can continu to use it).
I haven't created the materials lister. I don't know if some customers want it...

[Neilg]

I haven't created the materials lister. I don't know if some customers want it...

What I found when I moved to a company which had made their own in house was that you don't know you want it until you have it - then you cant live without it. It opens a lot of potential up.

[Yannick]

What I found when I moved to a company which had made their own in house was that you don't know you want it until you have it - then you cant live without it. It opens a lot of potential up.

This is why, it would be awesome if Chaos Group was to create such tool, then whatever Vray version, company... it would always be with you.

[bigbossfr]

Ok, let me few hours.

[bigbossfr]

Ok, here a trick for you.
Open the script editor, in a Mel tab, execute this :

optionVar
 -sv "SPF_DCEOptions" ""
 -sv "SPF_DCOptions" ""
 -ca "SSEitem1"
 -sva "SSEitem1" "VRay MatID"
 -ca "SSEitem2"
 -sva "SSEitem2" "{\"Vray Color Id R\",\"Vray Color Id G\",\"Vray Color Id B\",\"Vray Material Id\"}"
 -ca "SSEitem3"
 -iva "SSEitem3" 0
 -sv "STEP_DCOptions" ""
 -sv "STL_DCEOptions" ""
 -sv "STL_DCOptions" ""
 -sv "SW_DCOptions" ""
 -sv "Scale" "manipScaleContext -e -image1 \"vacantCell.png\" -image2 \"vacantCell.png\" -image3 \"vacantCell.png\" -mode 0\n-activeHandle 3\n-orientAxes 0 0 0 -preserveChildPosition 0\n-preserveUV 0\n-snap 0\n-snapRelative 0\n-snapValue 1\n-useObjectPivot 0\n-useManipPivot 0\n-editPivotMode 0\nScale";

Now, just add Material ID on your materials.
To add material ID on all materials, open in the script editor with a Python tab, and execute this :

import pymel.all as pm

def arsenal_materialIDaddAllMat():
    selection = pm.ls(materials = True)
    for mySelect in selection:
        #exclude custom material
        if pm.objectType( mySelect ) in ["particleCloud", "shaderGlow", "hairTubeShader", "layeredShader", "oceanShader", "useBackground"]:
            print "[Arsenal ToolBox] " + mySelect.name() + " must not have materialID."
            continue
        
        pm.mel.eval('vray addAttributesFromGroup '+ mySelect.name() +' vray_material_id 1;')
        print "[Arsenal ToolBox] Add material ID attributes to " + mySelect.name()
        
arsenal_materialIDaddAllMat()

Open the attributes spreadSheet :


Magic :