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Unanswered Questions

2,216 questions with no upvoted or accepted answers
9 votes
1 answer
3k views

Creating custom node types for geometry nodes

is it possible to create custom nodes for the geometry node editor (NOT node groups, combining blender built-in nodes), define inputs and outputs and execute some python code in between? I couldn't ...
8 votes
0 answers
299 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 ...
6 votes
0 answers
203 views

Scatter objects with different forms and sizes on flat surface without intersections

My goal is to make a node group that can distribute random objects over a given surface without (noticeable) intersections. I suppose the surface is flat, but it can be different forms (rectangle, ...
6 votes
0 answers
136 views

Recreate Solidify Thickness Clamp in Geometry Nodes?

I am trying to build the Solidify modifier in geometry nodes. Generally this is simple as there are many ways to offset a copy of the geometry. And we have Extrude to create the Rim. However, I am ...
6 votes
0 answers
1k views

Blender Geometry Nodes: How to find vertex neighbor id's and positions

Given that Blender Geo Nodes "Vertex Neighbors" nodes only outputs only the neighboring vertex and face counts and NOT the point ID's and positions, how is it possible to get the neighboring ...
6 votes
0 answers
972 views

How to get access to Armature pose bones info from Geometry nodes?

I have an armature with several bones, each of them I would like to use to control transforms of other objects. Normally I would either directly parent objects to the bones or use constraints or ...
6 votes
1 answer
4k views

Separate alpha from color in Shader Editor

In the Shader Editor, I can create an RGB node and in there, I can set an alpha value as displayed in this screenshot: However, no color separation node in blender supports extracting that value and ...
5 votes
0 answers
66 views

GeoNodes: How to use captured positions from one set of points and offset individual mesh island positions using the captured positions

Link to the blend file (uses Blender 4.0): My question is a little long, but hopefully with the screenshots it becomes clear what I am trying to achieve. Here's what I have so far in my geometry ...
5 votes
0 answers
148 views

Flat shading when using displacement or bump

When using a bump or displacement node and bump only or displacement and bump in the material settings, the shade smooth option seems to not be working. Instead the geometry starts to show, auto ...
5 votes
0 answers
621 views

Is it possible to control the radius of the skin modifier with geometry nodes?

Is it possible to apply to an object (formed by only vertices) a skin modifier, and then control the radius of the modifier using geometry nodes? This means that the object would have two modifiers, ...
5 votes
0 answers
320 views

Custom shader script in compositor (de-linearize depth buffer)

Some months ago I wrote a minimal opengl 2.5d game engine with pre-rendered backgrounds (such old Resident evil, Alone in the dark and Final fantasy games). Depth is managed through a grayscale image ...
5 votes
1 answer
906 views

get this gradient style in blender

I'm trying to get this gradient style: My best result are with eevee with volumetric and gradient on a metaball, but i cannot figure out how to get the gradient fill the totally of the metaballs like ...
5 votes
0 answers
696 views

Control image texture source from outside node group

I'm working on turning a cavity node setup I found online into a node group I can append to my blender files. The setup uses several mapping nodes (that I already converted to math nodes so the ...
5 votes
0 answers
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 ...
4 votes
0 answers
28 views

translucent white resin with embeddings - material

I need to make a volumetric translucent material, possibly working in EEVEE. It is a white semi-translucent resin with objects embedded. The embedded objects are more visible near to the surface of ...

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