149 votes
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Render with a wider dynamic range in cycles to produce photorealistic looking images

Update as of June 23, 2019 Plenty has changed since the original posting. I figured it was worth updating this post to highlight two excellent videos provided by two of the celebrities in the ...
  • 12.1k
81 votes
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How to assign a new material to an object in the scene from Python?

Here you go, code with some safety checks: ...
78 votes

How do I create repeating patterns with cycles' procedural textures

You can use the math Modulo node on mapping vectors to create tilling for procedural textures: To tile them seamlessly you need to flip tiles in X and Y axis: For the Tilling X and Y nodes use ...
72 votes
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Control Cycles/Eevee material nodes and material properties using python?

Here is how to change material properties, you can see all of them here or see the python path when you hover over in the UI on some material attribute: ...
69 votes
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How to create a mirror shader?

1. Mirror shader as material with mirror reflection (roughness = 0): To setup a physically correct material we need to base it on real measured values and setup the nodes so it follows the equations ...
67 votes

Creating Inky-looking characters in Blender

If I understand correctly, your question is essentially asking how to emit smoke from a rigged and animated character. This should work just fine, as long as the smoke modifier is after the armature ...
  • 154k
57 votes
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How to make a "reflective tape" material in cycles?

Such a material works by reflecting the incoming light back towards the direction it originated - since your car headlights are very close to your own line of sight, you see a strong reflection of ...
  • 43.1k
55 votes

How do I emit light from inside a object?

Cycles is a physically based render, and often the best approach is physical recreation. Components: Light source Light cover Light Source: This would simply be an emission shader since it is ...
48 votes
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How to make a holographic reticle shader in cycles

Pure Shader Solution! Hey look, high-school maths does have a purpose...... From what I could understand with a little research, holographic/reticle sights display a holograph that appears (when ...
47 votes
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How to Construct a Diamond or Other Gemstone Material in Cycles

You need dispersion Dispersion is the phenomenon of multicolored highlights you see in most transparent substances, resulting from different colors (light frequencies) refracting at different angles (...
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45 votes
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Stars background in cycles

First you need to jump over the the Node Editor view, then select Shader Nodes and World. Also make sure Use Nodes is checked. Then add a Noise Texture node and a Color Ramp node. Plug the Fac of ...
  • 24.5k
44 votes
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How to change hair color along length of strand?

You can accomplish this in multiple ways, the easiest way is to use a Hair Info node, and use the Intercept value to drive a Converter > Color Ramp node. Use this to drive the Factor on your mix or ...
  • 18.9k
44 votes

How do I create a reflective white material?

The floor is actually more reflective near the horizon. This effect is called Fresnel and it adds a lot of realism into the scene. Your shader should look like this: Instead of controlling the ...
44 votes

What does the simplify AO bounces value do?

TL;DR: To put it simply, after n light bounces, Cycles switches the material shader to a simplified diffuse material (i.e. AO), instead of evaluating the full material node tree. This Simplify to AO ...
  • 11.9k
43 votes

How to pixelate a texture in Cycles?

This is done with rounding the mapping vectors. The resolution for X and Y can be set with value nodes. It will work for any texture (for 3D texture just copy the rounding nodes into the Z channel) ...
42 votes
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How is the vector transform node used?

Overview To effectively make use of the Vector Transform node, you first need to appreciate the differences between the various coordinate spaces - World Space, Object Space, and Camera Space. You ...
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42 votes
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How to create clear plastic? (Cycles)

This is very similar to the thin glass problem. It can be fixed by giving it a thickness, (i.e. Solidify Modifier, as already sugested), which in some cases raises some topology problems, besides the ...
  • 3,456
41 votes
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What is Dot Product?

Let's start with some definitions: Vector: A list of values that are all contained under the same "roof" so to speak. For instance, the location of an object in 3D space is a vector of 3 values (the $...
  • 15.7k
41 votes

How to get accurate colors with Filmic Blender

Cegaton has wisely hinted at the root of the discussion, which is that the framing and definition as to what is an accurate colour is a cause for much confusion and much misunderstanding. This is an ...
  • 12.1k
39 votes
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How to create Bokeh circles?

Lamps are not visible to the camera directly, and hence cannot directly make pretty bokeh shapes. To make a directly visible light source, you'll want to use a mesh light. To do this, add an emission ...
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39 votes
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how are the math node operations in cycles calculated?

Here is a list of the mathematical equivalents of each operation. Add: Out = Value1 + Value2. Subtract: Out = Value1 - Value2. ...
  • 24.5k
38 votes
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Is there really a way to make a true toon shader material in Cycles?

OSL + Solidify (Irie's Technique) Results: Pros: The toon shader has seven customizable parameters for creating many different looks Edge strokes taper off with a natural look, like hand-drawn ...
  • 18.2k
38 votes
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How to create a procedural chevron like texture/material?

Start with Wave procedural texture and create tiling in X axis with Repeating patterns on procedural textures. After that clamp the values into stripes with a ColorRamp node set to constant: (^click ...

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