Questions tagged [render-passes]

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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, ...
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0answers
517 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 ...
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0answers
333 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 ...
6
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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 ...
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0answers
54 views

Strange color noise in diffuse direct at material edges [duplicate]

I am getting strange color noise in my diffuse direct passes. It shows up at the edges of the model, and at material boundaries on the model. It happens even with basic shaders (just diffuse mixed ...
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2answers
271 views

How does the cycles render-passes (for example: diffuse) works out when using colored light source?

As i read in the blender-wiki, there are several render-passes which are added/multiplied later on in order to give the final image. My question is, How does colored light influences the values of ...
2
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1answer
316 views

Get Object/Material Index of Completely Transparent Objects

OK, I know the question is kinda usual. My problem is I want some objects in a scene completely transparent/invisible (in most of the render passes) while I still can show it in either material or ...
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0answers
215 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 ...
4
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1answer
144 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?
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1answer
286 views

Track a pixel between frames using speed (vector) outputs?

With a sequence of frames, I am looking to compute how each pixel moves between two frames (i.e., optical flows). For example, I wish to generate a "pixel movement map" that tells me, for example, ...
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1answer
191 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 ...
1
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1answer
2k views

Why does the ambient occlusion pass result in a black environment?

Why does the AO render pass result in a black environment? Shouldn't this be white as default? Also, Is it possible to get a transparent environment within the AO render pass? White should do just ...
3
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1answer
316 views

Cycles: Export each light into separate files

Sorry in advance if this has been answered. Is there a way to set each of my 3 lights (key, fill, rim) up in such a way that Blender will render them all individually? I have looked into File output ...
2
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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: ...
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0answers
57 views

Ground Transparent but keeping Shadows [duplicate]

Say I have a cube on a plane: How do I make the ground transparent but also keeping the shadow that the cube passes? I want a solid shadow, not a transparent shadow as other answers detail. Like this:...
3
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1answer
458 views

Make Mist pass skip semitransparent objects

I am having problems with the Mist pass. I have search other questions but didn't find the answer. As you can see, I got an ocean (left) and a "river" (right). Don`t mind about the river disappearing ...
4
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1answer
653 views

Blender 2.77 Motion Vectors

I am new to Blender and trying to render out motion vectors on animated objects. I animated a cube and did what I thought was correct and it rendered nothing. See video: http://www.knottypixel.com/...
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1answer
409 views

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 ...
1
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1answer
886 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 ...
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2answers
758 views

Rendering single .exr from passes with different shaders?

How can a single .exr containing all passes from a scene be created if certain passes have different shaders applied. For example the matte pass might have different color surface shaders while you ...
1
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0answers
538 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
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1answer
358 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 ...
2
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2answers
3k views

How to achieve a flat colored render pass from material id/index for masking

I'm trying to get a render pass that splits all different materials into flat shaded objects (like material id in 3ds max) with anti aliasing. The output colors aren't important. (random colors are ...
2
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1answer
805 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 ...
5
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1answer
13k 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'...
3
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1answer
201 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 ...
1
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2answers
946 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?
3
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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 ...
1
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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?
4
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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
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2answers
383 views

UV render pass non-linearity

I am writing a piece of software that needs pre-rendered UV maps for on the fly texture mapping. I tried rendering these maps in blender, but the color values in the resulting image do not change in a ...
2
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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 ...
5
votes
1answer
1k views

Vector Blur Node not blurring

I have a bunch of boxes flying apart in Cycles, and I'm using the Vector Blur node for motion blur. Nothing's blurring. It's the simplest compositor setup: RenderLayer Image/Z/Speed goes to Vector ...
5
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1answer
1k views

How to do a lightcast only Layer in Cycles?

I try to render a layer that only includes the light as if it was cast onto an object. But it seams it is not possible to make a material that is invisible for the camera but bounces light from a ...
8
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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 ...
6
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1answer
596 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 ...
3
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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 ...
18
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1answer
7k 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, ...
2
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1answer
479 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
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1answer
194 views

Show sample rate pass on Yafaray

Is there a way to render an anti-aliasing sample rate pass on Yafaray like V-Ray does? This is extremely useful to fine-tune the render settings and have a quality output without cranking the AA ...
3
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0answers
840 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
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1answer
212 views

Some objects are not rendered in UV pass

I created the sea and floating object - the ship's hull. The ship floats in the sea, using the method from this tutorial - https://www.youtube.com/watch?v=11F1NRpqrzY (dinamic paint). Then I modeled ...
2
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0answers
283 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 ...
5
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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
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0answers
299 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 ...

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