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Questions tagged [rendering]

The action of turning a scene into an end product such as an image or movie. If your question is specific to one render engine, please use its respective tag (cycles, blender-internal, etc).

18
votes
3answers
4k views

Is it possible to render vertices in Blender?

Is it possible to render vertices with materials applied on them? I subdivided a mesh, and deleted all the faces so only the vertices were left. I could theoretically apply cool effects on them (I ...
3
votes
0answers
40 views

Keeping old renders open [duplicate]

I'm trying to learn materials, and there are so many options! I'd like to be able to compare side by side the effect of changing certain values. Is it possible to keep old renders open?
12
votes
3answers
1k views

Is it possible to render only keyframes from Dope-sheet?

I want to render only keyframes from Dope-sheet without the in-between frames. Effectively creating hold of last keyframe till there is new keyframe by re-saving (not re-rendering) the previously ...
36
votes
8answers
32k views

How to reduce fireflies in Cycles?

I often use Cycles' built in Glass BSDF shader to achieve realistic refraction effects, but in many cases, it seems that Cycles' glass caustics creates an unfortunately large number of fireflies (...
16
votes
8answers
5k views

How to stop Blender from making the CPU overheat?

Apparently my CPU or GPU overheats when Blender renders more than a few minutes. The computer suddenly powers down, taking down all running apps, email I'm writing, etc. This is almost never a ...
34
votes
3answers
11k views

Iridescence In Cycles?

Is it possible to create an iridescence shader in Cycles? Specifically for something like DVDs, soap bubbles, engine oil, etc.. I know about this technique for a DVD material, but it doesn't properly ...
27
votes
2answers
16k views

Light spectrum dispersion effect in Blender?

I'm trying to achieve the effect where a beam of light sent through a prism or other refractive object, separates out into the light spectrum. (See image below) This effect is especially useful to ...
9
votes
2answers
3k views

Is there any open software to provide cloud rendering via P2P?

I'm thinking about the idea of doing a distributed rendering via internet but i don't know where to start. Is there any sort of open software to provide P2P rendering or something like that?
21
votes
3answers
22k views

How can I get a Depth of field render pass?

How can one make a render pass with black and white data to display depth of field based on the Settings > Camera dof settings? I want to blur or defocus in the compositor, similar to the way it is ...
18
votes
4answers
5k views

Can blend files be queued for animation rendering?

I would like to be able to render several files one after the other, when I am not using my computer, e.g. at night. Is there a way of doing this?
4
votes
1answer
185 views

Shadows distorted and enlarged upon rendering

When I render the scene, the shadows of the fish have become distorted and enlarged. I have played around with the shadow settings on the meshes, materials, textures and environment but cannot fix the ...
3
votes
1answer
454 views

Use only audio when mixing compositing and sequencer in post processing

I created a nice movie layout using only the Node editor. I added an mp3 audio file via the video sequence editor. Selected Both compositing and sequence in post processing under render properties and ...
10
votes
1answer
12k views

How to enable GPU rendering on older Nvidia GPUs?

I have an older Nvidia graphics card that I would like to use for GPU rendering with cycles. However, I am having difficulty enabling this feature. If I open up User Preferences, I see the following: ...
13
votes
3answers
17k views

How to quickly do a clay render?

Sometimes, I find that it is useful to do a Clay Render for my model, where all of the materials render with a single common "clay"-like material (see example image below). In the past, I have done ...
2
votes
0answers
55 views

How can i use an image as a background in Blender Render? [duplicate]

I mean to say that for reflective materials like metal, I want that image as world material so that I get the cool reflections.
-3
votes
1answer
1k views

How can I get faster render times for a single image? [closed]

When rendering a single frame, either by pushing F12 or from the Properties → Render menu, is there any way to speed up the process? I know about rendering animation through the Python console to ...
4
votes
2answers
2k views

Problems with smoke simulation visualisation

When I hit Alt+A to animate the smoke simulation, I just get the particle effect without seeing the smoke. As you can see from the screen shot. I am now using 2.67b. Can somebody please tell me why it'...
185
votes
3answers
236k views

Can Blender render pngs with the background transparent?

I would like to render an animation as a series of .png images with transparent backgrounds for use in a video. Is this possible?
5
votes
2answers
4k views

Rendering Translucent Materals through Glass in Cycles

I am trying to make a realistic orange juice in a glass scene, but the glass seems to mess things up, as can be demonstrated by enabling "no caustics" Without glass with caustics, with the glass ...
9
votes
1answer
3k views

Cycles Subsurface shader: GPU compute and CPU compute give totally different results [duplicate]

Blender 2.67 Windows 7 Geforce gtx460 Head model with subsurface scattering and one texture Cpu render - fine, but slow. gpu render - face comes out black! (it was working at first it changed for ...
7
votes
2answers
2k views

Is it possible to limit the “Cycles Shadow from Transparency” per Object?

There is an option in the properties panel, Render > Light Paths > Shadows that toggles "using transparency of surfaces for rendering shadows" for the whole scene. I like to render architectural ...
7
votes
2answers
3k views

Video Editing Workflow: Use a separate scene for VSE?

I am doing a video project in blender, consisting of one title animation (sceneTitle), a main animation (sceneMain) and a end animation (sceneEnd). I put those animations in different scenes. Now I ...
9
votes
1answer
5k views

Composite a 3D object into a photograph

I was wondering how you would go about putting a 3D object into a photograph so that portions of the image are: In front of, or Behind the model. For example, a photo taken from the roadside with a ...
8
votes
3answers
3k views

Rendering Diffuse Color pass in Cycles

Can I render just the Diffuse Color Pass in Cycles? I tried to check just Diffuse Color Pass, but it rendered the whole image anyway.
12
votes
1answer
3k views

Importing PNG series with Import Image as Plane is blurred and has artefacts

I am using a series of .png images (from green screen footage) with alpha channels. However, when I try to import image(s) as plane(s) in a rendered scene, the image is blurry with anti-aliasing off. ...
4
votes
1answer
549 views

Can I render a MOV with Jpeg2000 Codec with Blender?

Apparently, Blender has support for this codec. But I can not get my way across it. On a Mac, there are no options to select JPEG 2000, neither for images nor movie. On Windows, I did render image ...
11
votes
2answers
7k views

Cycles viewport render different than f12 render?

What could cause this? f12: Viewport: (the f12 has fewer samples, but even when the viewport is at lower samples it looks different..) I know about color management, but that is at the defaults.. ...
21
votes
3answers
10k views

Exclusive lighting

Is (or will be) there any sort of light linking in Cycles, or a method to get a light to affect only certain objects that doesn't involve compositing two or more different render layers? Sort of what ...
32
votes
3answers
97k views

Object not visible in render

I have a model which you can see here (camera perspective). In the second image, you can see how the render turned out. I'm at my wit's end trying to figure our why it's not showing up in the render....
10
votes
4answers
16k views

Smoke Generator does not work

When I try to run the smoke simulator in Blender 2.62 I get no smoke at all. When I attempt to render, the only output is a black screen. What am I doing wrong here that is making the smoke simulation ...
7
votes
2answers
802 views

Artifacts in rendered geometry which appears okay in openGL / Solid view?

I made a low poly piece and realized that in the 3D viewport with rendered mode enabled that I have some artifacts on the boundaries of faces, if you look closely it looks like scratches. Can anyone ...
8
votes
3answers
3k views

Volumetric Shading in Cycles

I understand that there is no proper way of doing volumetric shading in cycles yet, but I'm curious to know if there is a way to fake it. Effects such as clouds or fire.
-1
votes
2answers
6k views

Why is Quadro slower than GTX rendering on GPU cycles? [closed]

Will Blender Cycles have a better performance in the future with Nvidia Quadro?
20
votes
2answers
6k views

Can you change the render seed for each frame of an animation in cycles?

When Animating using cycles, the noise always looks like it is stuck to the screen, is it possible to change the render seed for each frame?
11
votes
4answers
11k views

Set up a render farm with multiple OS and spec

I have quite a few computers at my disposal- about 100 mac pro's bought 2 years ago, just as many windows PC's of varying age (1-3 years), 50 linux machines and a good few terabytes of storage on a ...
9
votes
2answers
1k views

How to set a principal point for a camera

Pinhole camera model includes a principal point (just to be clear, it appears here: http://en.wikipedia.org/wiki/Pinhole_camera_model) Is there a way to set these camera param s.t. it will be used ...
25
votes
5answers
11k views

How to find image coordinates of the rendered vertex?

I have a simple mesh of a cube. I would like to know what are the coordinates of each vertex in the rendered image (i.e. for each 3d vertex I'd like to know it's pixel coordinates). Is there a way ...
3
votes
2answers
3k views

Texture baking in cycles [closed]

I checked blender Cycles todo and Blender road map but I can't find any word about this feature for cycles. Is there a plan for that in near future?
3
votes
2answers
17k views

How do you keep a single object from casting a shadow?

Is there a way to prevent a single object from casting shadows? If I shut down "Cast Shadows" on the light source then all shadows will be lost. That is not what I want. I want to be able to prevent a ...
7
votes
4answers
6k views

Is there a way to render single frame using network rendering in Cycles?

I'm working on architectural visualisations, and I can't imagine more useful feature. How render farms for rent do that?
7
votes
1answer
3k views

edges with thickness and color

Is there a way to vary the thickness and color of lines created by just edges and vertices? I realize that a face can be defined and then color and material applied, but is there any way to apply a ...
7
votes
2answers
1k views

When integrating live action footage and cg, how to make proper shadows for actors?

What is the best way to make believable shadows for moving actors that are standing in front of a green screen? Do you need to have a perfect modeled double that follows his movements so it can cast ...
87
votes
10answers
62k views

How can I pause a render in progress and then resume it at a later time?

I would like to pause a render that I have started, with the intention of resuming it at a later time (but during the same Blender session). How can I do this?
17
votes
5answers
17k views

How to get silhouette with contour rendering in Cycles

For an architectural visualization, I would like to use MakeHuman models, but: Only get them to render white with a black outline (on reflection surface too, if possible). Interact with light like ...
7
votes
2answers
2k views

How do I set a specific render engine while launching blender?

I have noticed that Blender Internal Render Engine is the default engine that is set when launching Blender. Users can change this behavior by setting a different engine and saving the user ...
40
votes
3answers
34k views

How to make a model cast shadows onto the world texture/background?

In most of my models, I usually end up setting a world background using an HDRI image of some kind or another. This has always been really useful for lighting in general or as a background for my ...
5
votes
3answers
11k views

Increase cycles speed for interior render

I modeled a house and wanted to render the rooms from the inside with the approximate sun lighting through the window. However cycles is incredibly slow in doing that. What should I change to increase ...
15
votes
3answers
2k views

Logging renders?

Is there a simple way to log/save every render that you make in a Blender scene? Maybe an add-on? This would be helpful to visually see progress on modeling, materials, lighting, and whatnot. It would ...
19
votes
3answers
9k views

What is the technical reason that Blender cannot use OpenCL on AMD graphics cards?

I have an AMD graphics card, and I want to accelerate Blender using OpenCL. However, Blender does not support the use of OpenCL acceleration with AMD cards. What is the technical explanation for ...
12
votes
3answers
2k views

Write Apple ProRes files from Blender?

Blender can read Apple ProRes video files. Is there any way to write to that format? I use a video workflow with Final Cut Pro X and used Blender for some retouching and compositing and would like ...