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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Why is my material index not working on the other eye?

I have a robot with a monocle on one eye, and now I want to give his eyes a glare effect. So what I did is, I gave the emission material that is assigned to the eyes a pass index of 1. But after the ...
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381 views

Network render one still image not an animation

I know it's possible to render an animation in a network by rendering every frame with one PC. However, I want to render one image. I would like to know how. Should I let every computer render one ...
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Mist pass gives white edges

Utilizing the Mist pass in the Compositer I get white edges on objects. Why is it, I always thought that the Mist merely defines black to white color depending on distance and nothing more?
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Does my EXR have everything I need for compositing?

The blender stack exchange community has been super helpful for my project and I will certainly try to give back to other users whenever I can. I'm ready to export my sequence to OpenEXR Multilayer to ...
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My Smoke simulation has this buggy blocky shadow

I have been tackling this problem for the last 2 days and I can't find any solution to it. So, I baked this smoke sim and test rendered it, It has some weird blocky shadow and reflection, I thought it ...
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Eevee diffuse pass render bug?

I hope this is the right place to post this. To see the "bug", please go directly to the observation part. The setup We need to export the diffuse pass render in low resolution of a scene, ...
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Save UV pass of specific object to file for later modification of texture

beginner here. I want to save my rendered images together with auxiliary data that can later be used outside of blender. Specifically, I want to change the texture of a simple object (say, a cube or a ...
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38 views

Open EXR file not getting generated in certain cases

I am trying to generate an OpenEXR file based on the following procedure : Getting the depth of every pixel to the center of projection of the camera in Blender I have tried to create a simple scene ...
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24 views

Reflection capture of emissive objects

Im in Blender 2.93 I have a tracked scene, the background is a PNG image sequence, and I've created a particle system that is made up of emissive icospheres. I would like the icospheres to cast light ...
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Load Shader AOV passes from one blend file to another

Is there a way to load the Shader AOV passes from one blend file to another? I noticed that when linking blend files the AOV material node comes along but the Shader AOV list is empty, so I was ...
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Access to Render Passes with Python

I need to save both the 'Combined' pass and the 'indexOB' pass. Is there a simple way to use it with Python? I set the path to save my render - ...
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How do I render out separate passes to be comped in After Effects? [duplicate]

The passes I'll need are: Alpha RGB Colour Reflection Specular Ambient Occlusion Shadow Cycles or Eevee, doesn't matter, but they'll need to be rendered out to be used in a different program (not ...
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Is there any way to not overwrite when I re-render ? Without changing the prefix everytime manually?

I just want to output new renders every time i render rather than those previous one being overwritten - again, without changing the prefix itself ! So eg : Render001-Normal becomes Render002-normal ...
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Getting Vector pass output for gas simulation

As mentioned in the title, I'm trying to get the vector pass output for a gas simulation. I have a partial solution by doing the following: Bake the gas simulation with OpenVDB cache format Add the ...
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Cycles — Non-translucent glass in compositing passes — Problem

I have a scene that is obscured by a glass plane that has displacement. The glass curves/bends all the objects that are behind it. << This effect is crucial here. When I render a scene with ...
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Viewport Shading vs Render - height offset / discrepancy - Eevee

I have shader that calculate color based on height. I have exact same shader setup in Unity and when I'm comparing results - Unity shader and Blender Viewport Shading giving me matching result. ...
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Transparency missing from Mist Pass

As the title says, when I render out a Mist pass, all transparent surfaces appear opaque instead of transparent. So if I have a glass door and there's a room behind that door, in the mist pass I won't ...
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Can I use Mist pass as a Z-depth for post-processing?

I am creating an animated scene with a static camera. And I'm wondering... Can I use a mist pass instead of Z-depth? I find it kinda easier to set up, it almost never needs normalization and it is ...
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Not rendering properly

hello. I am new to blender. I created this donut. I applied a creamy material to the donut. But in rendering it is not rendering correctly and the donut material is white+light blue instead of cream. ...
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How to change background color in diffuse color render pass? [duplicate]

I looked around and seems like its not possible according to another post. As a workaround, i'm using a bunch of white images to act as the background color change. Any way to change the black color ...
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Index OB not working in composite

I´m quite sure this is a error on my side but I just cant figure it out. I´ve been playing around with the Object Pass Index and used it to create images where every object has a different shade of ...
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One of my objects won't show in my F12 or final render [duplicate]

I've tried to render my scene but there's an object that won't show up. I've checked the camera, I've checked the visibility, it isn't hidden and it's showing in the viewport. I feel like I've opened ...
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1answer
120 views

Image plane is not visible through glass

I have an image-sequence as a plane imported to Blender in cycles. I used a "Shrinkwrap" modifier to wrap it on the Body. When I now put the glass helmet on the character the image plane is ...
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I want to remove one object from my render so that it leaves just a transparent background

I want to remove the pool water from my image, so that there is only a transparent background, so that I can add the pool I rendered in luxcore in photoshop. Right now, because I could not get it to ...
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How do you render a shadow pass from a shadow catcher in cycles?

I have an object (an apple). I've covered it in water droplets using hair particles (from a second hidden emitter). I only want to render out the droplets and their shadows. I've set the apple to be a ...
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Transparency from shader becomes white when exporting on transparent background [duplicate]

So first time actually posting a question here, but I just can't seem to find a solution. So I made this fire ramp shader for a project I'm working on, and I want to have a transparent background for ...
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90 views

Why does ambient occlusion make a black area above emission object?

I did AO in compositor. The body of an emission object is invisible to the camera. First screenshot - with TURNED ON AO Second screenshot - with TURNED OFF AO How it works and how i can keep AO turned ...
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Can I render different passes into different folder automatically?

I have a file output node rendering different passes into a single folder (circled in pink). I have set up folders for different passes (circled in yellow) and I want to set blender to automatically ...
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What are Multipass and crypto mattes?

I have animated a character with texture. I want to composite / integrate it into my reallife footage. I have heard about multipass compositing is it possible to get different passes rendered from ...
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345 views

How do I render a normal pass that is blue/pink instead of red/green?

In my case, it's for an aesthetic purpose. I want to render out a version of my scene that has the blue/pink normal map look. Blender's standard Normal render pass seems to be red and green. I'm sure ...
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277 views

How can I get pixels from multiple render passes through Python and store them to generated multilayer image?

First of all I know that the easiest and probably the most efficient and the fastest way would be to add File Output with different inputs, but as far as it is possible I'd like to avoid writing ...
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112 views

Is it possible to get Material ID passes with Anti-aliasing rather than jagged edges?

I cannot get a clean anti-aliased material id pass which makes selecting in photoshop a nightmare. Anyone has an answer to this ?
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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 ...
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How to render an animation of one render layer?

Right now if i press the render button under render layer (inside the compositor) it will render only one single frame.
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311 views

P-Map and Velocity map as outputs in 2.8

I render an animation with EEVEE and every frame takes less than 10 seconds to be rendered (in 4K). I also output normals, AO, and other images in the same render (using a File Output node). ...
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1answer
91 views

Animation sequence Render Layers + OpenExr

i am trying to render multiple renderPasses, which i know how to do In a sequence, which i know how to do, using MultilayerOpenEXR which i know how to use. But togetger it just aint working. What ...
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1answer
561 views

Blender Glossy Direct render pass

I was thinking that I know very well Cycles Render passes, but not. Can someone explain Me (I was searching on web, but with no success), why Glossy direct pass is taking texture into consideration? ...
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1answer
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How to disable vector pass calculating on unwanted frames?

I have an Internal Render animation more then 2000 frames and for 150 frames there is some postcomposed vector blur. All is good, except that calculating of vector pass taking about 10 seconds. So to ...
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1answer
1k views

Render certain passes only WITHOUT the combined [duplicate]

I wish to de-noise my render using the compositor but I found half-way that I have no environment or emission layer selected. As rendering takes time, I wish to render only that two in order to be ...
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1answer
360 views

Scripting setup to save all Cycle render passes to a single EXR image

The answer here Save all render passes to a single EXR image to setup a node diagram to save all cycle render passes to a single EXR file is very useful. I am wondering if there is a programmable way ...
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230 views

Applying fog glow to textures

The image above is one of my previous renders and the one below is my recent render. As you can see, I applied a texture to each of the objects in the model, however the in the previous render the fog ...
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1answer
244 views

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 ...
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99 views

Can't save a single pass from an OpenEXR MutiLayer file

So, I'll try to make it as clear as possible but I just started working with OpenEXR MultiLayer Output and I might miss some important info. Important to know I render with Cycles. I'm working with an ...

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