Questions tagged [render-passes]

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18
votes
1answer
8k views

Can someone explain the layer system?

I am really confused with the different uses of the terms "Layers" and "Passes" in Blender. Can someone please explain how they work in Blender. I know about Render Passes like AO, Diffuse and so on, ...
5
votes
1answer
907 views

How to properly connect the Denoise node in Compositor?

After enabling Denoising Data pass, there are now two image outputs: Image Noisy Image Which should I use with the Denoise node? Blender Manual doesn't cover it.
2
votes
1answer
849 views

Rendering Environment pass without Combined pass in Cycles

Using Cycles,I have a scene with Volume Scatter shader connected to World Background and an HDR image connected to the surface, Rendering the scene while checking Environment pass is giving me a nice ...
6
votes
1answer
516 views

Is there a way to utilize emissions in VFX?

I have a piece of footage that I motion-tracked fairly successfully, solved the camera motion, and made it into a 3D scene with that little button on the left of the motion-tracking layout. I then ...
6
votes
1answer
649 views

Is Z-Render Pass accuracy dependent on sample count? Are others like object id? (Cycles)

So I have a single-frame project and want to send it to a renderfarm that does not support OpenEXR or compositing (SheepIt). Can I simply do a 1 sample pass on my computer and still get high accuracy ...
4
votes
3answers
8k views

How to output ID masks as seperate files for compositing?

When I click 'Render' or hit F12 and select IndexOB pass in the viewer I'm able to see a mask (white on black) as expected, but when I click 'Animation' to output a series of these masks as '.png' ...
5
votes
1answer
2k views

Accurate IndexOB and IndexMA passes

I'm trying to get an accurate index pass for compositing. My geometry (a window in this case) consists of straight lines and it would be nice to have a perfect mask for color correction. As you can ...
3
votes
3answers
3k 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 ...
9
votes
1answer
2k views

Correctly re-combine ALL render passes?

So, there are some great tutorials around the web about isolating render passes in Cycles so that you can make changes, and then recombine all of your work as one complete image. You'll probably have ...
4
votes
1answer
2k views

Difference between a mist pass and a normalized z-buffer?

In Cycles there are two different render passes which seem to give some kind of depth information: the Mist pass and the Z-Buffer pass. I know that the z-buffer gives the actual distance (thus ...
5
votes
1answer
15k views

Z depth pass in Cycles, rendering white [duplicate]

Using Cycles as a render engine, I assigned an empty as a camera Track To target, and as the focus target in Depth of Field, yet rendering the scene, the depth pass is rendering all white, as if there'...
8
votes
1answer
2k views

What causes this mist pass glitch?

The problem, and what I've tried so far From the screen shot you can see that sky-blue from the mist color is leaking through the trees due to white spots that are occurring in the mist pass on the ...
4
votes
1answer
586 views

How to use the new render pass API for an external renderer?

I am developing an addon for an external renderer and want to register custom render passes. Last time I implemented this feature I had to resort to images because Blender only had hardcoded render ...
3
votes
1answer
11k views

Volume Scatter in World makes the sky turn black [duplicate]

While using the "Volume Scatter" option in Blender the Background turns Black. (I am using Blender 2.79). Here is my issue in detail. The first image below shows a normal scene with Blue sky (Set ...
2
votes
2answers
978 views

Cryptomatte doesnt output nice clean edges

Is there any way i can have cleaner edges out of the cryptomatte image output ? The outline is just not clean enough.
2
votes
1answer
3k views

Fastest way to export files multiple passes into folders?

What is the fastest way to export the files of multiple passes into a folder for the appropriate pass in Cycles? Is there any way to automate this process? For example, if you wanted to render: ...
2
votes
1answer
1k views

How to do seperate render passes in blender?

I a lot of VFX breakdown that uses something they call "render passes". From what I see, they are rendering the clip in seperate ways (like rendering the ambient occlusion, specular, shadows, depth of ...
3
votes
1answer
1k views

Render Passes separately

Is there anyway to render passes other than combined separately ? I would like to render the Z pass, the mist or the normal pass separately but even if I disable the Combined pass, blender still ...
1
vote
1answer
981 views

Export multi-pass .exr image sequence from cycles?

Is it possible to export an image sequence (in this case a sequence of .exrs) from cycles? For example, I have multiple sets of .exrs for different passes I want to combine into one set of .exr image ...
6
votes
1answer
2k views

Cycle Normal Pass in Camera Space

I am wondering if there is any way that we can alter the cycle normal pass to output value in camera space. Currently, as far as I know, the normal is in object/world space, which does not change when ...
3
votes
2answers
964 views

How do I stop the Compositor Output Node from overwriting my images on each new render?

Using the compositor node setup above, when I hit F12, it makes a new pass and the rendered images are automatically saved. The problem is that the new render erases the previous one that was saved in ...
3
votes
2answers
277 views

Accessing Vector Pass Data in python in background mode

Background: We are building an automated pipeline to extract motion (i.e. vector pass output) from animated blends by running scripts using blender's python API. We are able to programmatically set up ...
4
votes
1answer
150 views

To what degree does Cycles' sample level impact other passes?

Can equally useful AO, Z, mist, speed and other non-beauty passes be generated at lower sample rates compared to those rates needed for beauty passes? How about ObjectID mask passes?
4
votes
1answer
128 views

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 ...
3
votes
1answer
210 views

Render pass that output center of object of each pixel

I am looking to create a render pass that takes a scene and outputs, for each pixel, the 3D world coordinate of the center of the object to which that pixel belongs. In other words, all pixels that ...
2
votes
1answer
499 views

Blender render passes

If you set up render layers in blender and you have them all ticked wouldn't blender render all of those layer for you all at once one after the other with all the associated maps that have been ...
1
vote
0answers
116 views

How do you use the Z-Depth pass? [duplicate]

Whenever I render something in Blender Cycles the renderlayer node seems to have a Z-Depth output, however whenever I try to use it it is completely white. What is it useful for?
1
vote
1answer
573 views

How to render depth pass with alpha channel transparency in cycles?

I have a 3D object in the empty scene. I can click on the "transparent" checkbox to make a render with a transparent background. How can I render depth (or any other) pass with transparent background ...
1
vote
2answers
1k views

How to render the fire and smoke as different passes?

Is it possible to render the fire and smoke (the same simulation), in Cycles, separately, for example as different passes?
0
votes
1answer
101 views

Incorrect Vector Pass output (No Alpha & Zero Values)

I am looking to render the vector pass in a OpenExr format with all channels. I have rendered on both 2.7 and 2.8 and the generated images have an empty alpha channel. The compositor is set as follows:...