Questions tagged [render-passes]

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18
votes
1answer
6k 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, ...
4
votes
1answer
244 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 ...
2
votes
1answer
731 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
534 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
7k 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
1k 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 ...
2
votes
2answers
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 ...
8
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 ...
3
votes
1answer
1k 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 ...
8
votes
1answer
1k 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 ...
3
votes
1answer
11k 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'...
4
votes
1answer
466 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 ...
1
vote
1answer
128 views

render albedo (color passe without shadow)

I am trying to render the albedo of a mesh with a material, I have managed to get a flat render without lights and shadows by using the diffuse color passe, but the color are not the same as the one ...
2
votes
1answer
2k 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
7k 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 ...
3
votes
1answer
601 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
787 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 ...
2
votes
1answer
413 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.
6
votes
1answer
1k 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 ...
4
votes
1answer
133 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?
3
votes
1answer
177 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
460 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
1answer
332 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
1answer
855 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?
1
vote
0answers
115 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?