# All Questions

28,139 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
179 views

### Can Blender Internal Render passes be put back together again?

I'm stuck with a simple task. I need to tweak some render passes of the image, and then put them back to the combined composited image. For Cycles I use this scheme from the manual: It works as ...
348 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: ...
155 views

### Why doesn't my parented smoke domain move with the parent object?

I have parented a fireplace, the firewood (the smoke flow) and the smoke domain. Unfortunately, the smoke domain doesn't move along when I move my parent object. I can't move it separately either. It ...
132 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 ...
177 views

### Smoke Simulation Vibrating

Last week I started making a volcano that was starting to erupt. I've got some sparks and I made a nice smoke simulation. I clicked Bake All Dynamics and then rendered. The result was a nice volcano ...
5k views

### How can I bake a normal map with smooth, beveled, edges, when the low poly has sharp ~90° edges?

Background I have been trying to solve a seemingly simple problem with normal map baking in Blender 2.9 since last weekend. I wanted to make sure that I read and researched as much as possible before ...
504 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 views

### Particle Instance Modifier : colour each instance based on the emitter texture (like Hair strands materials do)

In cycles, with particle hair strands, I can get the colour from the texture of the emitter object for colouring the entire strand. When I use the "Particle Instance" modifier on a mesh (a simple ...
476 views

### Modify a single plane mesh to match image based on alphas, create shape keys

My goal is to create the shapes of continents as they drifted from Gondwana to the present day. My proposed approach follows, but I would welcome alternate approaches or comments on this approach. I ...
321 views

### Why Cloud texture has square cell pattern?

When I am using Cloud texture as bump map in Blender Render, this cells appear. How can I make them go away?
2k views

### nVidia skin shader with the Principled BSDF

I've been using a skin shader primarily based on the Brecht skin shader, which is itself based on the Sum-of-Gaussians approach as seen in 14.4.7 from GPU Gems by nVidia. Its Cycles adaptation, which ...
473 views

### PyOpenGL and VBO Indexes

Long story short, I'm trying to do a modal handler that draws using OpenGL into the viewport. Immediate mode through BGL works fine, but is dog slow. I tried using VBOs through BGL but there seems to ...
454 views

### Corrupted UV map on exported and re-imported object

I have a problem with an object texture I import the object as obj and it's fine with the texture. But when I export the object and import it again with another form or type it's texture gets corrupt ...
2k views

### How to convert image pixel values from 8bit to 32bit properly?

I'm testing code from this question:  import bpy ...
279 views

### “Search for unknown operator” On Start-Up After Removing Module and Shortcuts

For lack of a less drastic alternative, I created a whole module just for setting bpy.context.window.screen to a specific screen, since ...
165 views

### Normal Map only visible on single Shape Key?

Is there a way to make a normal map for facial wrinkles more/less visible with certain shape keys? I've seen something like this on youtube, but I haven't been able to determine how it was done. I've ...
128 views

### What do all of the mode enums mean?

What do all the various mode constants in blender operators documentation do? bpy.ops.object.duplicate(linked=False, mode='TRANSLATION') - Duplicate selected objects Parameters: ...
1k views

### How to update compositing nodes via script?

I create some nodes in compositing via python script: ...
298 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 views

### How can I derive from an existing Operator in Python?

When creating a new Blender Operator, you'll derive the class from bpy.types.Operator, like this: ...
849 views

### How to Switch Cloth Object Ready for Sewing Simulation into Printable Template

I'm making sewing patterns in blender, i.e. several pieces of flat fabric. Typically I create each piece as part of the same mesh object, and join them with edges so that the cloth simulator will sew ...
747 views

### accessing Blender objects from external Python IDEs

I would like to manipulate Blender objects from Spyder (not using the internal Python editor). Basically I would like to have Blender running and Spyder running as well, and then interactively access ...
81 views

### Standalone player enter key is considered a character (Linux)

What happens in the 'in-Blender' player: What happens in the 'Standalone' player: Any ideas on how to fix this?
185 views

### Cannot mix .user and .addon keyconfigs in register()

I've been messing around with keymaps lately and I've come across behavior that doesn't make much sense to me. I am searching the current keyconfig for a specific keymap item, removing it, then adding ...
732 views

### Relative and Absolute shape keys on the same mesh

is there a way to use both relative and absolute keys together on the same mesh ? i want to use absolute keys to deform muscle in a way, and relative to animate face shapes. both on the same model.
445 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 ...
3k 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 ...
233 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 ...
5k views

### How to center the 2D Cursor in the UV Editor (Quickly)?

Is there a way to center the 2D Cursor to the UV Editor (Quickly)? Similar to pressing Shift+C in the default 3D Viewport?
301 views

### Does anyone have an example of template_curve_mapping?

I'm doing some test with template_curve_mapping. I have write this code: ...
327 views

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 ...
2k views

### Bake texture from view

I have a wooden crate with textures and all. Its hard to explain. I want to turn this (figure1) into this (figure2) the only way i can think to explain it would be projection baking. Where i project ...
412 views

### Animation showing last frame when played?

To make this simple I have a .blend that you can look at. I have simple logic: 1) When the prop "Active" is true, our object is visible. When false, invisible. 2) When Spacebar is hit, "Active" ...
384 views

### Wrapped packaging model?

I want to make a plastic wrapped packaging as shown in the photo. its wrapped and folds on sides towards the back and overleaps. where should i start? I tried playing around with vertices in edit ...
357 views

### Wacom tablet acting oddly

Just putting this out there in case anyone has any ideas. I have an older Wacom Intous2 and it still works great. I'm on Windows7. On Blender 2.71 and earlier, my wacom tablet always worked perfectly,...
603 views

I've seen some sliders working in pie menus but the one I'm trying to add to my pie script isn't showing up. Its the 'autosmooth normals' slider from the Object Data tab, under Normals (in the ...
506 views

### How to display texture preview on a custom node?

I'm trying to use layout.template_preview to display texture previews on some custom nodes I created. I'm currently calling it with just: ...
567 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 ...
829 views

### help with exporting game as .exe

I've been working on a game with levels. I know how to use scenes and transferring to scenes for the levels but it's getting laggy and slow. I know I can just do 'Start Game From File'. That will ...
712 views

### Converting an obj sequence to a .bobj fluid sim cache?

I'm wondering if there is any way to accomplish turning an obj sequence exported from realflow into a .bobj fluid cache that I could then trick blender into loading as a native fluid sim cache. So far ...
124 views

### Anti-Aliasing in GPU shader Module(OpenGL)

How to smooth the bound of the shape? If you run the following script in blender, you can see the Jagged Edge in that shape. ...
146 views

### How does “Flip Normals” affect Face Corner Data?

I use the "Normal Edit" and "Data Transfer" functions a lot, therefore I'm working with custom Normals with Face Corner Normals that differ from the Vertex Normals. The Pink lines represent the Face ...
2k views

### How to properly create hollow text letter suitable for 3D print?

I am doing this project, where the objective is to print some hollow letters. I get to the following result with the spets that I took, where the objective is to make the letter 5 mm thick, with walls ...
446 views

### Force Cycles GPU rendering for a Render Farm

So basically I'm on vacation for 2 weeks with a laptop without a CUDA device. I do have access to a render farm with GPU rendering support. Now the problem is that I can't setup blender to render in ...
751 views

### Is there a way to make baking sound to F-curves more accurate?

At the moment I've got a script that generates a bunch of bars, and bakes a narrow range of frequencies to each bar's Z scale. It ends up being a pretty simple spectrogram that I composite onto the ...
1k views

### ANT Landscape erode option?

I have just updated to Blender 2.79 and was playing around with the updated ANT landscape add-on when I noticed a new option called Landscape Eroder, this has the potential to be really cool but I can'...
1k 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 ...
370 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 ...