Questions tagged [id-mask]

The ID mask node will use the Object Index pass to produce an anti-aliased alpha mask for the object index specified. The mask is opaque where the object is, and transparent where the object isn't.

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Apply random greyscale vertex colour to every element of an object using geometry nodes

I'm trying to use geometry nodes to make an ID map I can bake. I'll be baking in external software so ideally this would be vertex colour that can be exported in an FBX file. Applying colour based on ...
otto's user avatar
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Want crack map as Segmentation mask

I am completely new to Blender and I want your help to get a mask of cracks that I generate on any surface. For my project I need to generate cracks on the object and get on the cracks as an output (...
Brijesh Prajapati's user avatar
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What is this texture mask used for and how can I apply it in blender?

I downloaded a tree model and it came with a diffuse, normal and mask texture maps. Im not sure how this specific mask texture is suppose to be used or how to apply it in blender and I cant find a ...
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How to split areas of one material for ID mask in Compositing in Cycles?

How in Compositing to select only area for ID mask, which is created in material using mask (Fac)? In the example in this picture, there is one material & with help of mask, areas with Emission ...
Juliya's user avatar
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realtime window into a scene

I have a realtime view into a room as a mask on a plane. All you can see of the room is through the mask /2D plane that is exported as a 3D model (.GLtf or .glb preferably) I achieve this effect in ...
bentoon's user avatar
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Where is the 'selected to active' bake option in new version?

Where is the 'selected to active' bake option in new 2.8 version? There is 'bake from multires' now, but options are only normals and displacement, and I need to bake color
Timur Nizamiev's user avatar
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ID Mask by Pass Index in bpy

New to Blender, and the documentation for bpy is throwing me for a few loops. I got a setup in the compositing layer working for my desired goal as shown: This renders an image and a color-coded mask ...
Daniel Fischer's user avatar
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Movie Clip Editor Multiple Masks

New to Blender, have a quick question about masking. I am greenscreening some photos, however some areas do not cut out correctly (space between ladder notches), so I have resorted to masking and ...
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Cryptomatte - Clean edges

blender people, please, does exist a solution to make a clean render pass for ID colors - materials? I want to achieve a same solution like in VRAY - material ID. After that, I want to import it in ...
JSM_Parametr's user avatar
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Material in render different to Material showing up in the IndexMA pass

I am trying to create a mask based on materials having certain nodes. In this case I want to filter any shader that uses the Glass BDSF Node, I have this object with a couple of different materials as ...
Sam's user avatar
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Anti-aliasing of ID Mask is more coarse than Cryptomatte

The edges of the Cryptomatte are smooth, but the edges of the ID Mask are rough even if the anti-aliasing option is checked. The anti-aliasing option of ID Mask seems to have a very small difference ...
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I get border artifacts when using Cryptomatte or ID Mask

I tested masking in the Blender compositor. Please see the GIF below. The 1st to 3rd outputs are Crptomattes(obj, mat, asset) and the 4th to 5th outputs are ID Masks(obj, mat). All mattes have border ...
J. SungHoon's user avatar
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Get image pixels from multiple viewer nodes

For Blender 2.81 and Cycles render. I want to access all of the following data passes from a Python script: Z Normal ...
João Cartucho's user avatar
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Masking out parts of an object for compositing

I am making a model of an Arc Reactor. In the model, there are some wires and a sphere with emission material, inside a glass material to create a glow effect. Now I want to make these emitting ...
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ID mask noisy when using Volume Scatter for World volume

I've made a sword in this medieval blacksmith scene an ID mask so that I can give it a glare effect without affecting the rest of the scene, but because I used Volume Scattering for the world volume, ...
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How to mask an imported image as a plane in Blender 2.8?

I have the following scene in Blender 2.8: I imported the Blender logo as a plane (File > Import > Images as Planes ---which is a plugin---). I want to create a rectangular mask on the Blender logo ...
Godoy's user avatar
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Object/Group Instances and Pass Index

For Post Production in the Compositor, I heavily rely on using Object/Material Index masks. Normally, I select a single object and then give it an unique number in the Pass Index/Material Index slider ...
NGCHunter2's user avatar
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How to utilize material (or object) index behind a refractive material in cycle?

The material (and object) index works only when the object is uncovered by other objects. But the thing is the object can be visible behind a transparent or semi-transparent objects. In cycles it ...
Prag's user avatar
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Object outline appears when using ID Mask

I have an ID Mask, and this yellow-like line appears in my render when I'm using the ID Mask node. (The line appears around the drawers on the right side os the image) I tried using the Fast Gausian ...
RATIU5's user avatar
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How do I make a script to set object index for every object?

I wat to make a script that will, for every mesh in the scene, set a different object pass index so I don't have to select every mesh in my scene to assign a different number. I know this is possible ...
Joseph Groves's user avatar
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Node setup to access ID masks in Cycles?

In the compositor, there is a dedicated ID mask node where you put in the number of the mask you want, and it will output it. We can get access to ID masks in Cycles materials via the Object Info ...
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How to mask mesh using an object

I am running a cloth simulation on a human avatar. I want to hide the human mesh that is underneath the cloth and not the entire human mesh. Is it possible to do something like this using the ...
Sum-Al's user avatar
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Any way to have multiple ID masks?

It is possible to have multiple objects share the same ID mask in the compositor. It does not seem possible to have objects possess multiple ID mask values though. Is there any way around this? I want ...
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I can't get Object Index to give me a clean Luma Matte. Please Help! [duplicate]

Why is it that I can't get a clean looking Luma Matte from either Object Index or Material Index Pass. As you can see in the example I provided, I do have anti-aliasing checked in the ID Mask. What is ...
Sergei's user avatar
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How to use flat color shading with anti-aliasing for multi-materials?

I've been searching a while now for a solution to render out a flat colored map for masking out objects in photoshop. I found this very helpfull topic: https://blenderartists.org/forum/showthread.php?...
Delagone's user avatar
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How to achieve a flat colored render pass from material id/index for masking

I'm trying to get a render pass that splits all different materials into flat shaded objects (like material id in 3ds max) with anti aliasing. The output colors aren't important. (random colors are ...
Delagone's user avatar
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3 votes
1 answer
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Object ID to a whole group

How to add an index ID to thousand of objects? Selecting the whole group and changing the ID, It applies only to the singular object.. a solution could be to assign a different material and so to ...
Francesco Yoshi Gobbo's user avatar
4 votes
3 answers
4k views

Compositor ID Mask not working?

I want to give my model a glare effect at robots eye, so I gave the material assigned to the eye Pass Index of 1 then when I went to compositor and made this node set up, in the viewer I could ...
A.D.'s user avatar
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