Unanswered Questions
2,513 questions with no upvoted or accepted answers
8
votes
0
answers
303
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 ...
- 60.3k
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 ...
CommunityBot
- 1
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 ...
5
votes
0
answers
154
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 ...
- 51
5
votes
0
answers
58
views
How exactly is orientation determined for hair particles rendered as objects?
I am using a Blender 2.8.x hair particle system to render particles using objects, but I cannot figure out precisely how the generated objects are oriented. At least not in all cases. If I do NOT ...
- 51
5
votes
0
answers
322
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 ...
- 3,072
5
votes
1
answer
909
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 ...
CommunityBot
- 1
5
votes
0
answers
698
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
687
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 ...
- 395
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 ...
- 51
5
votes
0
answers
560
views
How to Offset a Particle cache in Time
This has been asked before - in 2013 - in relation to smoke:
How to offset multiple smoke instances by time?
The answer was inconclusive, so I'm wondering if there's something new since?
I'd like ...
CommunityBot
- 1
4
votes
0
answers
29
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 ...
- 41
4
votes
0
answers
218
views
Migrating geometry shaders to Metal
I'm working on BlenderBIM (architecture addon for Blender) and we have a bunch of shaders to support plan annotations in viewports. Mainly it's simple shapes based of lines - lines, segment based ...
- 456
4
votes
0
answers
377
views
Drawing non-polyline smoothed lines with `gpu` module
Backstory:
Since bgl module will soon to be deprecated and it's doesn't work on Metal already I was trying to move code to gpu ...
- 869
4
votes
0
answers
192
views
Custom nodes, node limits, and compile times
I am working with some very complex custom toon shaders in Eevee. This causes several problems. First, the compile times are atrocious. Second, I am in danger of hitting the node limit if I also use ...
- 6,647
4
votes
0
answers
341
views
Understanding Blender's Invert Node and Varying Bit Depth Images
So, I am trying to wrap my head around exactly what the invert node is doing in the shader editor.
I realize that this sounds like the most simplistic question in the universe, but please bear with me....
- 1,433
4
votes
2
answers
549
views
Using Dynamic Paint To Spawn Particles Through Vertex Groups
What is causing the particle system to not follow the density group? Use modifier stack is enabled, both objects are well subdivided and the canvas object is an unmodified plane.
CommunityBot
- 1
4
votes
0
answers
400
views
Is it possible to apply ocean modifier for only one face of geometry?
I was trying to recreate this illustration with my limited knowledge.
And while doing that I tried to follow some tutorials. In one of the tutorials, the animation done with ocean modifier and ...
- 13.7k
4
votes
0
answers
442
views
Shading according to velocity
I have a rigid body simulation of many objects and would like to change how they're shaded depending on velocity. It's easy to get location from object info node, but how about change in location ...
- 355
4
votes
0
answers
264
views
Is there literally NO way to start a particle animation when the particle is emitted?
I've been battling the particle system for over a week now without any success.
A little context to what my issue is:
I'm using an instantiated collection(!) with 4 meshes in it as particles, each of ...
- 1,363
4
votes
0
answers
180
views
Possible to give a shadow a different material?
Hello.
Let say that in a this image, i'd like all shadows to be rendered as an red emissive material, is this possible in render ? procedurally, witouth any modifiers, just by the shader editor ?
- 1,942
4
votes
0
answers
277
views
How To Model Ornamental Grass Procedurally
I am trying to model an ornamental grass procedurally (Miscanthus sinensis 'Gracillimus'). I want to be able to do this procedurally (not combing for example) because, unlike normal grass, it has a ...
- 12.4k
4
votes
0
answers
128
views
Project Idea/ seed bead particle array
I am new here and have been working with Blender for a few months for a college course. We often find solutions to problems doing internet searches because the course could not possibly have a ...
- 61
4
votes
0
answers
251
views
Is is possible to get boids data to animation nodes signalling when they are 'attacking'?
I am creating a space dogfighting scene and I have been able to hook up the particle boids to animation node instances, including positions and even the rotations by normalizing the velocity and ...
- 111
4
votes
0
answers
582
views
Using Particle systems on an Array Modifier's Cap
I'm new to Stack Exchange, but I've been using blender casually for the past year, or so
I'm currently working on a city, for the purpose of learning and fun.
To save myself from building a lot of ...
- 208
4
votes
0
answers
364
views
Level of Detail of Particles System?
First, the GIF above is a 60-frame sequence with a 1080x1920 size that uses a freestyle to render the outline.
This scene is a lot of polygon counts using the full shot model because the characters ...
- 2,246
4
votes
0
answers
505
views
Rotate object when colliding
I have a question regarding collisions in blender.
I'm trying to animate shortwave radiation (particle system) which reflects on different materials.
However when i apply a collision the 'solar ...
- 133
4
votes
0
answers
517
views
How to create very realistic rain with a particle system surrounded by a fluid domain?
I am working on a scene for a short film in which it is raining on a desert. One of the shots will be very close up so I want the most realistic look possible. I looked at other tutorials on how to ...
- 81
4
votes
0
answers
1k
views
How can I make particles not pass through the surface and not get "stuck" in it?
I want to make the falling autumn leaves.
I did a system of particles, but when the leaf particles reach the surface, (to which I applied collision modifier), they do not entirely remain on the ...
- 1,914
4
votes
0
answers
387
views
Particles intersecting object and then exploding without reason
I'm using PyroEvil's Molecular Physics addon, which is required for the simulation to work. Find it here.
I've been playing around with the aforementioned addon, to see what it can handle and what it ...
- 1,595