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47 votes
1 answer
2k views

Custom trackpad pan/zoom/rotate behavior add-on

I'm trying to write an addon to customize the trackpad panning, zoomimg, and rotating gestures, but can't find a way to read the actual trackpad parameters for position and so on. The properties in ...
  • 4,451
17 votes
0 answers
2k views

Per-Vertex lighting in GLSL?

How can I achieve per-vertex lighting (like in single/multi-texture shading) in GLSL with all of the other GLSL features (like buffer shadows, texture layers, etc.)? Bonus points if it can be done in ...
  • 643
15 votes
0 answers
557 views

Generated Previews - low-resolution and dark shading fix?

(2.79 - Blender Internal) Generated Previews is very handy feature for previewing assets when importing / linking, I would just like to know if there is a way to: Make thumbnails lighter to match ...
11 votes
2 answers
11k views

How do I add an asset to the User Library from Current File?

I would like to use the asset library, but everything I add to it is only stored on the current file which is of little use. There's no intuitive way to add assets to the main library and apparently ...
  • 1,685
10 votes
1 answer
464 views

How can I get a list of currently running modal operators?

Here I found a working solution using ctypes which allows to find out if any modal operator is currently running. I am not good in C and don't understand how it works. But I'm sure someone does, so is ...
10 votes
0 answers
527 views

Save screenshot (bge) without writing to disk

This is a little odd but I need to save a screen-shot as an array (numpy array for eg) without writing to disk. The idea here is to create and then call the array once per frame in an external script ...
  • 311
9 votes
0 answers
181 views

Play/animate images, spritesheets or video files in 'template_icon_view'

I want to "play" some animation in this UI space, the template_icon_view: I can load all the images I want, for example: I know that the gif format is ...
  • 2,237
8 votes
0 answers
147 views

Numpy optimise mesh edges length calculation

To improve my very rudimentary numpy knowledge am going to ask a number of optimise my numpy questions here on BSE Can find the length of each edge in a mesh using ...
  • 82k
8 votes
0 answers
194 views

how to write a custom projection type?

Is it possible to create a lens shader with EEVEE/Cycles ? I'd like to have the control over the camera position and the ray direction per sample. This allows to simulate various conventional lens ...
  • 81
8 votes
0 answers
354 views

3D Stereo Active shutter vision LCS glasses realtime viewport?

Is it possible (or maybe already implemented by someone) to configure the viewport to display stereoscopically at a set frequency dependent on the given screen refresh rate, while having the frequency ...
  • 435
8 votes
0 answers
332 views

Blender on Windows is skipping python script. (brenda on windows)

We've been using Brenda for quite some time now for rendering architectural stills. Since our editing stations are doing nothing at night, I started making a desktop app that allows you to pick jobs ...
8 votes
0 answers
1k views

Antialiasing textures in cycles (Blender 2.77 and higher)

I would like to get an answer to a frustrating question. https://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.77/Cycles In this link is "Anti-Aliasing is now enabled for baking. (c359343)" ...
  • 81
8 votes
1 answer
381 views

How to load an internal blender image using OSL?

OSL has the texture command that we can use to load image files and map in an object. Dfelinto made a nice video about it some years ago. https://www.youtube.com/watch?v=V5N2rnFtSlw We also have many ...
7 votes
1 answer
537 views

Rendering large image sizes in Eevee (Over 64k pixels)

I am working on creating a wrap for several walls spanning 25 to 60 feet long. People are going to be looking at these fairly close so I don’t want to go below 200 dpi for my final print quality. That ...
7 votes
0 answers
131 views

Is there any way to turn coordinates into curve?

I recorded fly camera movement, so I got keyframes with coordinates. Is there any way to turn the camera coordinates in keyframes into curve?
7 votes
0 answers
978 views

Respect unit scale when linking or appending objects

Appending/linking the same object with the same metric size from Blender files with different unit scales in Blender 2.8 results in objects of different sizes. It seems, Blender respects only the ...
7 votes
0 answers
486 views

Operator tooltip from layout text

The concept is to make a panel layout that emulates the workspace (screen) layout. While testing I have set all the buttons to be the Splash Screen operator. An image of how this looks for five ...
  • 82k
7 votes
1 answer
432 views

FBX Import - What do these settings mean?

When importing an FBX file, most of the settings are self-explainable, however, there are some settings that I'm curious to know the meaning/use of. These are: (1) Import User Properties (what are ...
7 votes
0 answers
863 views

Override context for operator called from panel

I have an operator, “my_operator”, that is called from a panel, as follows: ...
  • 286
7 votes
0 answers
537 views

Update function for NodeSocket?

How do I set a callback for socket input change (value or link change) when having a custom node? I have a socket defined like: ...
  • 177
7 votes
0 answers
193 views

Filmic color management and masks

I recently had the problem of having to mask (rotoscope) some footage in the movie clip editor and render out some elements to put in there. For rendering those 3D elements, I wanted to use the filmic ...
  • 984
7 votes
0 answers
570 views

Is there a low level alternative for bpy.ops.object.convert(target='CURVE')?

(Note: Somebody asked there nearly the same question as me and got a very nice answer. However, this was to convert an object to a mesh. I have exactly the same context as this person but I want to ...
  • 183
7 votes
0 answers
586 views

Can an object have multiple rigid body constraints?

I want to simulate the motion of an artist's brush. A spine of pivot-constrained spheres will collide with a z-plane, which represents the canvas. To mimic the elastic properties of a bristle I need ...
  • 71
7 votes
2 answers
501 views

Why does this add shader create so much noise?

This question is based on the shader in this answer. When I render the scene using plain glass for the material ball, it takes about 500 samples to converge. Here is the node setup and the result at ...
6 votes
0 answers
14k views

cycles stuck at loading render kernels

ever sense I have been using the new LTS version or a newer version of blender its not loading the render kernels or sometimes it will but its just painfully slow even with the default cube scene has ...
  • 61
6 votes
1 answer
211 views

How to display an image in my custom node

I have a custom node and I want it to be able to display an image. I know that the node has a parameter show_preview and if you enable it, no image appears.
  • 129
6 votes
2 answers
1k views

Global Slow-mo effect - Animating Time scale

Is there a way to animate the timescale of a scene for a small amount of time? I'm looking to create an animation, and in the middle it goes from 1.0x speed, to 0.125x speed (1/8th normal speed), but ...
  • 304
6 votes
0 answers
348 views

How do I change the width of operator popup?

I've done this simple operator taken from templates. How to change operator GUI width? I tried scale_x and ui_units_x but no ...
6 votes
0 answers
532 views

Scale operator icon OR make template_icon clickable

I am trying to present the user with a gallery view to select a item from the thumbnails. Ideally, they click a button, are presented with the gallery view, and with a single click choose the item. I ...
  • 183
6 votes
0 answers
1k views

Is it possible to render Annotations made in View Space?

I have some animated annotations made in the 3D Viewport and I cannot render them with viewport render. It looks like the problem is that they were made in View Space. Is there any way to have them ...
  • 2,157
6 votes
0 answers
535 views

Is there a low level alternative for bpy.ops.mesh.separate()?

I am dealing with a great model, I have a problem, I want to divide it by parts, but bpy.ops.mesh.separate(type = 'LOOSE') seems to have a big problem, that is not ...
  • 1,146
6 votes
1 answer
1k views

How to wait for an operation - to another operator - to complete within an operator (import_scene)

Besides the point but why is this not working as a default stack is expected to work? I'm trying to get an operator to call another operator and wait for the operator's response before proceeding. ...
6 votes
0 answers
1k views

Blender 2.8 Outline Width is still thick on setting 1?

I truly wish I could avoid having to ask for help on things like this... In Blender 2.8 object mode the wireframe displays with an extra thick outline. If I go to the outline width (default 2) and ...
  • 119
6 votes
1 answer
198 views

Why does Select-All in Face-Select mode also select isolated edges?

Blender v2.79. Let's say I have to extrude all faces of this planar construction containing two edges not included in faces, and one isolated vertex: In this object, there are not hidden ...
  • 1,522
6 votes
0 answers
920 views

Can Blender automatically reload external script files when they are changed?

I came across this question: Is it possible to run a script from an external editor without reloading the file? Which also was asked over here in a similair format: Workflow for developing add-on/...
  • 516
6 votes
0 answers
181 views

How do you add hooks to multiple vertices at once?

I have a path with a lot of vertices and it seems very unnecessarily tedious that I have to click on each individual one to add a hook to it. Surely there must be some quick command that adds a unique ...
  • 193
6 votes
0 answers
3k views

ACES workflow in Blender

Q.: What is the correct way to import ACES 2065-1 encoded EXR files into Blender whilst keeping the look identical to what I saw when exporting from Davinci Resolve? In both application I select the ...
  • 61
6 votes
0 answers
4k views

Convert Animation Nodes to Object and Keyframes

I have This Node Tree in Animation Nodes: As you can see it creates objects and edit their location. but When I render, even If I normally bake all the Dynamics, the cache disappears and then it ...
  • 698
6 votes
0 answers
2k views

How to change animated object's origin without ruining animation?

For example: I have a character and a spoon which he is holding and moving thanks to child of constrain. My character releases the spoon a little bit above a plate. So I came up with idea to use rigid ...
6 votes
1 answer
499 views

How does 'Align Active Camera to Selected' decide where to place the camera?

Thanks to this answer, I'm using bpy.ops.view3d.camera_to_view_selected() to automatically place a camera so that it frames the selected object for rendering. But ...
6 votes
1 answer
2k views

How to update compositing nodes via script?

I create some nodes in compositing via python script: ...
  • 181
6 votes
1 answer
4k views

Blender scene animation exported to Three.js without bones or skinning?

I have a mountain range scene very similar to this: The mesh is a simple plane extruded to form a low poly mountain range, the animation uses 3 shape keys, a base and 2 for random vertices ...
  • 315
6 votes
0 answers
297 views

File output node and output panel both exporting during animation

I have an animation ready to render but there is a small annoying issue. I currently have a basic file output node to export the raw render and a mist pass and they are both set to export to the ...
6 votes
0 answers
431 views

Does anyone have an example of template_curve_mapping?

I'm doing some test with template_curve_mapping. I have write this code: ...
  • 482
6 votes
0 answers
4k views

Make object not receive cast shadows

I know you can make an object not cast shadows on others by disabling Shadow in Ray Visibility. But how can you make an object not receive shadows cast by other objects?
  • 6,323
6 votes
0 answers
697 views

Add custom textures and vertex attributes

I'm a new user of Blender, but I have 10 years experience of 3d development (mainly C++/OpenGL, but I know Python pretty well). Now I plan to use Blender as a replacement tool for the "good old ones ...
  • 61
6 votes
2 answers
3k views

Rigid body: how to display collision margin in Blender 3D?

Hello I'd like to display the collision margins in rigid body simulation how could I do with objects and particles ?
  • 81
6 votes
2 answers
3k views

How to use dual scroll wheel mouse in Blender?

I've seen some mice with an extra scroll wheel like the Logitech MX Revolution. Is it possible to use this in Blender? If so, what is a good use for it? I currently have a MX518 mouse, which has ...
  • 621
6 votes
1 answer
653 views

Hotkey to navigate scenes in Blender 2.8?

In Blender 2.7, i could change the layout with Ctrl + ← and Ctrl + →. In 2.7, the scene was layout dependent, allowing me to navigate the scene this way. However, in Blender 2....
  • 2,108
5 votes
0 answers
186 views

Geometry nodes Spiral demo

I've been trying to achieve this result for a long time, but I still couldn't figure out how to do it. There's this sample image in the Blender manual that is exactly what I want. Procedural spirals ...

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