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.

72 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
5
votes
1answer
1k views

2.80 - use Eevee and Cycles together for motion blur issue

I have one question about one problem in my experiment with motion blur in Eevee. I know that in this time is not supported and maybe will be supported in future official release as another primary ...
4
votes
0answers
93 views

split up and render depth slices (for extreme dof)

I'm doing a particle simulation of fire embers swirling around, to be matched up to a filmed plate. The plate has a very shallow depth of field, which creates a problem when comping it in. It takes ...
3
votes
0answers
925 views

I can't find the pass with foam

I render a scene in Multilayer EXR sequence (Cycles). After I've combined the passes together everything is OK, but there the foam is missing. I've checked all the passes, and I don't see pass with ...
2
votes
0answers
54 views

Is there a way to auto name my AOV outputs?

So in most other software I use like Houdini and C4D there are tokens you can use to assign auto naming conventions such as the $ (dollar sign) expression. In C4D <...
2
votes
0answers
38 views

Unit of the color in of the Diffuse Direct/Indirect passes in Cycles render

When I read a pixel's red value 1.0 from these passes, is the value I read radiance, radiosity or irradiance? Is it 1.0 W/m^2 or 1.0 W/(m^2sr)? My understanding is that a sensor is sensitive to ...
2
votes
0answers
282 views

Mist pass looks noisy

I have a following problem: when I render my final image with mist pass, the mist pass itself becomes noisy, see in these images: Mist pass combined in image: Mist Pass itself: Could the problem be ...
2
votes
0answers
78 views

How to keep only Reflections and Shadows but object itself invisible

I want to render only: Object On the white table Table surface reflections Object Shadows on table Emission particles reflections & gloss on table I want White Table is to disappear totally It ...
2
votes
0answers
36 views

I can't save my emission pass

I'm working on a big project in blender 2.82, I open and close it a lot, do renders. My compositing setup uses the emission pass, but every time I close the file and reopen it, the emission pass ...
2
votes
0answers
2k views

why can't I render only freestyle stuff while using eevee?

I'm working on a cartoon character using eevee and I want to add freestyle to it. in 2.79 I used to render freestyle lines in a separate layer and since I only used cycles, I could just hide the mesh ...
2
votes
0answers
129 views

Accessing to custom render pass

My goal is to render a time-of-flight(ToF) image from a given scene- I want each of the rendered pixel value, to be the length of the photon traveled from the light source to camera. (or average of ...
2
votes
0answers
629 views

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 ...
2
votes
0answers
43 views

Cycles 2.79 Need reflect and refract output

Blender Render allowed reflection and refraction as distinct output nodes for renders: I am working with an FX firm that is asking for the same sort of output from my Cycles render, plus specularity. ...
2
votes
0answers
289 views

Cycles Integrating glass into live footage

I'm trying to integrate transparent objects rendered with cycles into live footage. The problem is that when compositing, even with alpha, the original grey sky is rendered through the glass instead ...
2
votes
0answers
303 views

Correct Shadow Pass in Internal?

I'm trying to extract a shadow pass in internal but it isn't looking like expected. This is what the render looks like: But the shadow pass looks like this: It brutally cuts off the side of the ...
1
vote
0answers
45 views
1
vote
0answers
112 views

How do you get 2 render layers from an exr file?

I am compositing a scene with 2 render layers. I saved it as an image sequence of EXR files so that I can close the program. However, after compositing, the Exr doesnt keep data from separate render ...
1
vote
0answers
59 views

Render Passes File Output in Headless Mode

Here is the blender manual on command line rendering: https://docs.blender.org/manual/en/latest/advanced/command_line/render.html I am having an issue in blender where blender hangs on rendering in UI ...
1
vote
0answers
63 views

How do I create transparent, 8bit shadows for further use in Photoshop?

I'm struggling with a problem. I created a simple scene in Blender: As you probably guess, I want to use that scene to create a mockup in Photoshop. The goal is to have a separate shadow that will ...
1
vote
0answers
140 views

Render Pass normal looks wrong

i try to use renderpass normals but i never get the result i would like to see. Does anyone know if its possible to get a normal render from the renderpass? left, render bad right, vieport matcap good ...
1
vote
1answer
1k views

how to render multiple things separately

I'm using Blender 2.80. I have a scene, where I fire 20 cannons at the same time, with smoke and fire. How can I render (with Eevee render) some cannons separatley? (i.stack.imgur.com/lXFuK.png)
1
vote
0answers
136 views

Why Principled BSDF has no texture support for glossy color pass?

During compositing I've found out lack of glossy textured color pass for Principled BSDF material. Glossy BSDF works well though. Example pics: Glossy BSDF Principled BSDF Material
1
vote
0answers
80 views

Blender 2.81 Principled BSDF shader with sss not showing diffuse pass

When using the the principled BSDF shader with any amount of sss the diffuse passes are completely black. It seems the sss passes inherit the diffuse pass information. The node tree is just the shader ...
1
vote
2answers
41 views

blender automatically closes while rendering

I have to render a single frame and it's almost done every time for up to 80 percent and closes all of a sudden and that's totally screwing me up I set frame size to 1920*1920 and 100 percent render ...
1
vote
0answers
42 views

Diffuse render pass looks different from original texture

I have tried to follow these instructions on how to get a diffuse render pass of a brick texture that exactly replicates the original colors of the texture. But even with all the settings in place I ...
1
vote
0answers
68 views

render normal map, diffuse color and height map

I would like to make all the render needed to create a shader I can apply to a plane and get the same result as my composition with plenty of mesh. here are all the meshes view from the side: I ...
1
vote
0answers
222 views

How to layer (transparent) materials?

I am generating layered patterns using procedural textures. that is easy enough in a single material using mix shader nodes. what I would like to achieve though is ...
1
vote
0answers
82 views

How do I do a Z Depth Pass?

Wondering how I do a proper z depth pass. How do I get the hotel to show as well as the road? It's like it's getting cut off or something.
1
vote
0answers
74 views

rendering with/without shadows

I'd like to render 60 frames of animation, where actually nothing moves, just the sunlight and the shadows are moving a little bit. I'd like to differenciate the objects and the shadows and render ...
1
vote
0answers
223 views

Is there any way not to render the combined pass and only output the passes I need?

I want to output multiple passes using the File Output node in the compositor. However, Blender's default output directory works together and outputs a combined pass. When I type no directory in the ...
1
vote
0answers
46 views

Render decals as 2nd pass?

I have decals on my mesh in Cycles by way of placing it over my original material with a mix shader. How can I render my decals alone on a 2nd render pass? Thank you!
1
vote
0answers
579 views

Antialias and jagged edges on Cycles passes

I want to composite different passes in Photoshop but the GlossDir pass has jagged edges. I tried to boost samples, different experiments, boost resolution (about 6000x4800) but the GlossDir every ...
1
vote
0answers
134 views

Does the Z pass works with OpenEXR?

the Defocus (with use Z buffer checked) works perfectly with a render layer node (tested on one frame per time). however when i rendered the whole sequence as an OpenEXR (Multilayer or not) and ...
1
vote
0answers
39 views

Get separate explicit render passes without rendering the entire image

Today I noticed that I need to render some paths separate from the combined path. (Z and AO). I checked the marks, put combined to off and also made the locations clear in the node editor for blender ...
1
vote
0answers
159 views

Best way to render passes off different objects?

I have a full detail version of a model and a less detailed version. For style reasons, I want to render my diffuse pass off the full detail model, and my gloss pass off the low detail version. I ...
1
vote
0answers
2k views

Is there a quick way to render only the Z depth / pass in cycles?

Hi I'm almost finished rendering an 820 frame animation and just discovered that the Z pass is missing! Argh! ... Anyone know of a quick way to render out only a Z depth pass in Cycles without ...
1
vote
0answers
40 views

Render layer- or render pass-like options when you can't use Film | Transparency?

I have a scene containing An object An animated screen with an image texture/transparency material, which passes in front of the camera, adding a mist-like effect to the scene A background/ground, ...
1
vote
0answers
758 views

How to render an environment only pass?

I'm having trouble rendering an environment only pass. The problem I'm having is that objects in the scene will cause the environment pass to include blacked out regions where they're positioned. Is ...
1
vote
0answers
401 views

Override all materials' color but not transparency

The situation is as follows: I would like to create an image where the pixel values (RGB) correspond to the position (XYZ) of the point in space (world coordinate). Create a new material, like in ...
1
vote
0answers
645 views

How to composite shadow pass with image sequences?

I rendered passes from a scene in another program and wanted to use Blender to composite them. What is the node setup for combining a diffuse color pass and shadow pass into one image? Thanks! Color: ...
0
votes
0answers
30 views

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?
0
votes
0answers
32 views

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 ...
0
votes
0answers
29 views

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 ...
0
votes
0answers
24 views

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, ...
0
votes
0answers
37 views

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 ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
0
votes
0answers
17 views

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 ...
0
votes
0answers
70 views

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 - ...
0
votes
0answers
29 views

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 ...
0
votes
0answers
24 views

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 ...