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Questions tagged [render-passes]

(Render) Passes can be used to split rendered images into colors, direct and indirect light to edit them individually, and also to extract data such as depth or normals. Use this tag for questions concerning the use of render passes.

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Direct volume pass as a mask instead of the volume's color

I'm using the volume direct pass for a smoke sim I have but that seems to give me the image of the smoke instead of a mask of where the smoke is and isn't so it becomes a problem when I'm trying to ...
desperrrr's user avatar
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18 views

How to get reflection pass when there's no light on the scene

Here's my blend file : https://drive.google.com/file/d/1FDAkvG0ZTkOrBIlyMiR9AsOCbOOMysue/view?usp=sharing There's no light - only use default world lighting. I combine 2 render layers using compositor ...
andio's user avatar
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2 votes
1 answer
47 views

Difference between Data Object Index and Cryptomatte Object?

Blender Cycles What is difference between Data: Object Index, Material Index and Cryptomatte: Object, Material, Asset?
CountQuadula's user avatar
4 votes
0 answers
34 views

how to get reflection on a surface while the surface has to be hidden from camera? [duplicate]

lower left is the footage/image where I want to put 3d object on it. upper left is my 3d setup where I use a plane for the desk ( image is projected on the plane to match camera angle). I use ...
andio's user avatar
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23 views

export render pass without re-render 3d scene

I'm rendering an image and i've turned ON all the passes/layers that I needed. In the Image editor I can see my render result and all the passes correctly. But I don't like the naming used for those ...
andio's user avatar
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14 views

Accessing Render Passes from Viewer Nodes Without Saving to Disk

I'm working on a script to access and manipulate render passes directly in memory without saving them to disk. My goal is to obtain and process different render passes like the beauty pass and mist ...
Hermis14's user avatar
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Why is the shadow of the 3D viewport inconsistent with the effect rendered after shadow capture?

I have a question about shadow capture. The PNG output after shadow capture is directly superimposed on the background. Why is the shadow much darker than the viewport appears?
Tridge Mialey's user avatar
1 vote
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115 views

There is no Shadow pass in Cycles

I want to render an EXR Multilayer sequence but there is no Shadow pass available. The 4.1 manual says there should be a Shadow pass option under Light>Other, but instead there is a Shadow Catcher ...
oliverwatson.tv's user avatar
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Render AO pass issue (unwanted shadows)

When I render the AO pass is very weird. there are shadows that appear and the objects are more or less dark depending on their diffuse color. I don't understand what is happening since AO pass is ...
norab's user avatar
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1 answer
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not showing up in animation render [duplicate]

I have all this animation and audio, so when I render the animation, it does not show up, completely blank. Does anyone know how to fix this error?
Logan freeman's user avatar
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Using file output node results in 2 images being saved

I am rendering denoised render passes using the openEXR Multilayer format. (The default output does not save the denoised passes) So right now I take each pass and plug it into a denoise node. And ...
muckyu's user avatar
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3 votes
1 answer
177 views

3.0 to 4.0 difference in color pass involving IOR

This picture is the color pass of a render of a sphere with default pricipled BDF settings and a bar of color for flavor. When I render it in Blender 3.6.3 (or any blender 3.x)) it is perfectly flat ...
Krayne's user avatar
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44 views

Render passes and Lens distortion

I'm currently rendering out rendering passes that I'll later combine in Photoshop for some composition work. One thing I don't understand is how to include my Lens Distortion in the passes. I have it ...
N03's user avatar
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1 answer
107 views

Blender, PNG renders and Davinci Ressolve. How to extract data?

I am confused on how to render a mist pass from Blender that I can use in DaVinci Ressolve. Everything I find is ussing that mist data to be comped within Blender. I know I can use OpenEXR file format ...
Sumatra's user avatar
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Mist pass ignores refracted material

Is this normal behaviour for mist pass or not? black squares on buildings - is glass material with refraction
Bicukow's user avatar
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45 views

Glossy Direct Pass on Donut Too Sharp and Bright

I followed Blender Guru's donut tutorial Part 14 for compositing. But for the step adding Glossy Direct Pass, my black and white Donut is way too sharp and bright when compared to the tutorial one. I ...
moonss's user avatar
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Cycles, information on how the motion vectors are calculated

Where can I find technical information on how the cycle rendering engine calculates the vector (motion) information? Specifically the backward motion. Is it doing a backward render of each frame? And ...
Walker's user avatar
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Render Glossy indirect and Shadow pass without the use of ViewLayers

I'm wondering if there exists a solution that allows you to render the Shadow Pass and Glossy Indirect pass in the same render/view layer, on the same plane and still have a transparent background. ...
Jernej Kalin's user avatar
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7 views

Cant render active scene [duplicate]

When i render my scene it does nothing. it doesnt say out of memory or anything.
Marcus_3D's user avatar
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1 answer
14 views

Black shape only visible in Cycles Renderer, can't see it in any other viewmodes

Whenever I render my scene I see this unknown black shape on the renders. I can't figure out why because it doesn't seem to exist in any other viewmodes.
Leo's user avatar
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DiffInd RenderLayer pass shows part of texture [duplicate]

Trying to save "DiffInd" pass of composition layer render pass as image. But I see part of the object texture being rendered. Attached is the texture image and Render pass composition shader
user170883's user avatar
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Diffuse indirect pass shows part of texture

Trying to save "DiffInd" pass of composition layer render pass as image. But I see part of the object texture being rendered. Attached is the texture image and Render pass composition shader....
user170883's user avatar
1 vote
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242 views

Why are my render and preview images different? The preview is better

The low pixel version is the preview screen, which is clear but has lighter colors. The high-quality version is the rendered image, and both are using the Cycles renderer. The preview have more ...
Tchi HU's user avatar
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0 answers
30 views

Transmission pass is affecting final render, even though the pass is not being used in the Compositor

In one of my projects, I have set my compositor such that it has a multi-pass denoising system. In this project, I am not using any transmission or volumetric related assets, so I did not use those ...
mellohaiku's user avatar
0 votes
1 answer
124 views

Noisy .png after rendering Gloss passes

I'm using Cycles as my render engine, on the latest version of Blender 3.5.1 In compositor, I used a set of nodes to seperate the highlights (glossy) from the rest in order to save it seperately in a ....
art_stuff's user avatar
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1 answer
252 views

Is Cycles capable of generating a proper ambient-occlusion render pass?

I really hope I'm doing something wrong: the ambient occlusion, in my knowledge, should be a calculation that's more related to geometry and light direction and directional shadows. I'm attaching two ...
Etord's user avatar
  • 45
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1 answer
319 views

Creating a Product Mockup: Export Specular Map to image to use as Highlights layer in Photoshop

I am fairly new to Blender and I am using EEVEE to render my scene. The reason for taking this route: I do repro design for product labels. Part of our process when working on new pbriefs, is to ...
Reinhardt's user avatar
0 votes
1 answer
221 views

Cryptomatte issue when saving EXR files from output file node Cyptommate passes getting glitched [closed]

i'm working on a professionnal animations right knoww and i'm having a big issue with the crytomate output. Context : I will render an animation and i want to have the cryptomatte passes. I'm working ...
Eliott's user avatar
  • 11
1 vote
1 answer
3k views

The "Shadow" option is not available in "Show Layer Properties" (Blender 3.5)

When I turn on Cycles to render, I have no "Shadows" option in "Show Layer Properties" (Passes > Light > Other > ...), but in the video tutorial everything works perfectly....
Ejenkou's user avatar
  • 13
1 vote
1 answer
22 views

is the full image always computed when rendering a single pass?

I've started learning the compositor. I need only the glossy pass for now. But I see that, when I render my image, the "full" image is rendered, then the GlossDir layer. I was wondering if ...
gordie's user avatar
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1 vote
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344 views

I Want to separate grease pencil in compositor

Is there a Way of isolating the grease pencil like the freestyle pass or cryptomatte?. I can't find a way of doing it.
Gabriel's user avatar
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1 answer
69 views

Is there an equivalent setting in Eevee as Glossy Direct in Cycles engine?

I'm trying to follow the Blender Guru donut tutorial but using Eevee to render. I'm trying to add a glowy nature to the white highlights on the object. The Glossy<Light<Passes<...
ceptillious's user avatar
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0 answers
206 views

How to perform separate light pass for each material

Is there a way to programmatically export a single materials "diffuse" and all "indirect light passes" into an alpha channel. The resulting alpha is all the locations in the image ...
Jesper Hustad's user avatar
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0 answers
78 views

Huge amount of noise is generated by overlapping several glass objects and de-noiser misbehave in Cycles - Blender 3.3

I am working an animation with simple particle emitter, the object has a complex glass shader to bring refraction and a bit of rgb separation. The problem is that when the particles overlap, which is ...
Damian Velasco's user avatar
0 votes
1 answer
342 views

How to get correct distance value using Mist pass

I'm trying to use Mist data for getting values of [0,255] for Mist range of [Start, Start+Depth]. but I'v got into two problems: Output values range is only [0,206] for [Start, Start+Depth] Output ...
audi02's user avatar
  • 271
0 votes
1 answer
653 views

AOV texture exports

I'm currently trying to export multiple versions of a tshirt on a single animation. I have been trying to set up an aov pass that exports the tshirt material (and therefore be able export multiple ...
Natan Rifkin's user avatar
1 vote
0 answers
375 views

What technical color space is OpenEXR rendering in Blender?

I’m rendering my project as an OpenEXR sequence and, when I go to composite this over my footage, to be exactly accurate, I need to both convert the Gamut from what it originally was rendered at, and ...
Pro Effects MAX's user avatar
2 votes
1 answer
1k views

How to make an object only cast a shadow but be invisible in a View Layer?

This may be something very simple but I actually tried a bunch of things without any success. I am looking or a setup that allows me to do this in 2.8+. Let's say I have a cube sitting on a plane and ...
mqbaka mqbaka's user avatar
1 vote
0 answers
378 views

Can we use "Grease Pencil" to mask other objects?

I'm trying to use a "greasy pencil" to cut out other objects. Like this red cube in the example. The white cube and the pink circle are in a collection. I want to make an object go through ...
Daniel Meurer's user avatar
2 votes
2 answers
139 views

Visualize rendering time per pixel of scene?

Is there a way to visualize how long each pixel took in terms of GPU computation time of the render? e.g.something like a heatmap of computation. I know it exists for other render engines but I can't ...
Jag JB's user avatar
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0 votes
1 answer
422 views

White Diffuse Color shows as Gray in Diffuse Color Render Pass

In my current scene I have a material with a Diffuse BSDF node applied to all objects. The diffuse color is pure white. When I render the Diffuse Color pass or switch to Diffuse Color in the Viewport, ...
Dr. Pontchartrain's user avatar
2 votes
1 answer
380 views

Why is image plane not detected by mist pass in EEVEE?

I have a couple of image texture planes in my scene. They render as expected upon applying mist pass in Cycles, but in EEVEE the planes are invisible in the mist pass while other test objects (the ...
jais's user avatar
  • 155
1 vote
0 answers
100 views

How to apply mist pass on grease pencil objects?

I'm working with a set of grease pencil objects and would like to fade the distant objects using the mist pass but they don't seem to be affected by the pass. What can I convert these strokes into so ...
jais's user avatar
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1 vote
0 answers
491 views

The right way to set up a multilayer renders (and a reflection pass)

I am trying to create a "reflection catcher", to work like a shadow catcher. I have followed this tutorial, which seems to work, but also seems to end up generating many more passes than I ...
tomh's user avatar
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0 answers
31 views

Multilayer OpenExr Postfixes

When I output my renders to Multilayer OpenExr the layers produced are postfixed by various different strings. What do the postfixes like .[V] mean? Where can I ...
atwright147's user avatar
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0 answers
39 views

Strange top line on the frame when rendering with Cycles (OPTIX)

I get a strange obscur line on the top border of my frame. I am rendering with Optix on a RTX 2070 super with 1000samples with denoiser (CYCLES). I dont have this problem when rendering with Cuda. Do ...
SIMI's user avatar
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0 votes
0 answers
158 views

Is there some extra settings for bloom pass in 3.2 beta?

In v3.1.2, the bloom pass: but, in v3.2 the bloom pass output is same as the default combined output: Is there some extra settings for bloom pass in v3.2 beta?
leon's user avatar
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0 votes
1 answer
524 views

glossy direct pass (view layer properties)

I am going through a step by step tutorial. But at a certain stage, my render differs from the scene of the author. Please help me figure out why my render is partially colored. The author is in black ...
blenduser's user avatar
1 vote
0 answers
82 views

Why is half of the smoke not showing in the reflection when I turn on "indirect only"?

I have a character that is emitting smoke and standing on a plane with glass shader. I want to render the plane with the reflections and the smoke separately. However, when I turn on "indirect ...
Marcus A. Dingstad's user avatar
2 votes
2 answers
2k views

How to denoise EXR and its passes?

How to denoise EXR and its passes in Cycles? I tried enabling Denoising Data and it didn't work.
saifart101's user avatar

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