Unanswered Questions
3,858 questions with no upvoted or accepted answers
4
votes
1
answer
382
views
OSL: How does Cycles implement derivatives?
The OSL language specification contains the following functions:
float Dx (float a), Dy (float a), Dz (float a) vector
Dx (point a), Dy (point a), Dz (point a) vector Dx (vector a), Dy (vector a),...
CommunityBot
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4
votes
1
answer
2k
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Hair partially disappearing in render after combing
I got a weird problem. Patches of hair on a rug for a bathroom scene are disappering in my render, but only if I entered particle edit Mode and combed the hair before.
So, I start out setting up my ...
CommunityBot
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4
votes
0
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231
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Strange light from glass
I'm doing a scene with a room with a table. On the table I have some wine glasses, but I get this strange light from some of them. The glass to the left looks OK, but the other are not OK. It seems ...
- 663
4
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883
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Simulate light bending due to gravity
I'm trying to demonstrate light bending due to gravity, but my knowledge of Blender isn't up to the job.
As a test I have a sphere with the Glassy BSDF shader. The colour is set to white, and I've ...
- 981
4
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0
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582
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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
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0
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608
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Nvidia GPU not showing as Compute Device for Cycles
I have a question concerning my GPU Cycles Compute Device.
I am running MacBook Pro 10.12.5 with a NVIDIA GeForce GT 650 M.
I have done my research a bit and stumbled upon a confusing area. I ...
CommunityBot
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4
votes
0
answers
715
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black displacement artifacts using micro-displacement and adaptive subdivision
I am currently using micro-displacement along side with adaptive subdivision.
However I have stumble upon a weird artifact.
As you can see there are some black pixelated artifacts along side the ...
- 1,216
4
votes
1
answer
451
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Mesh emission strength to Area lamp strength
I've three emissive mesh planes in my scene which I'd like to convert to Area lamps.
I've set my new Area lamps to use precisely the same size, location and strength as the planes were. But when I ...
CommunityBot
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4
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0
answers
2k
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Render on Tesla K80
I'm trying to render on a Tesla K80, but it doesn't work.
blender --debug-cycles
outputs
...
- 53
4
votes
0
answers
1k
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Can you link render settings across all scenes so they can all be changed at once?
I have multiple scenes to render and in my "master" scene I have set up the render nodes to output the render of all scenes. This way I only have to hit the Render Animation button once and all of the ...
- 852
4
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How can I render a proper normal pass for smoke in cycles
I would like to render a normal pass for smoke in Cycles like this one:
I'm aware of this method mentioned in Blenderartists but the result is far from the result needed to relight in post (via ...
- 2,177
4
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0
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749
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Copy node tree from one material to another in cycles using python
I have two cycles materials (say source and target). I want to copy the Shader Nodetree from the source material to the target material after clearing any currently present node tree(s) in the target ...
- 33.3k
4
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0
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2k
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Synchronizing object in Cycles
I have a model of a butterfly that uses a displacement map for most of the detail on the mesh at render time. To get an accurate render, I have it subdividing 4 times for the render before applying ...
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4
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Is there a way to get the vector to the closest UV seam?
I am looking for a way to get the distance to the closest UV map seam in UV-space as a vector in the node editor. Like this:
The blue dot is the current point of reference, i.e. the point where the ...
- 25.2k
4
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Setup network render for cycles render on LAN
I am trying to setup network render with cycles as the rendering engine. My use involves rendering hundreds of images and I have already written logic for it in python which is working fine on single ...
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