Questions tagged [shaders]

A shader is a computer program that usually runs on a GPU and is used to do shading, texturing, special effects or post-processing. Shader nodes specifically refer to the nodes used to create shaders for Cycles, but this tag can be used for other shaders as well.

Filter by
Sorted by
Tagged with
37
votes
9answers
34k views

How to reduce fireflies in Cycles?

I often use Cycles' built in Glass BSDF shader to achieve realistic refraction effects, but in many cases, it seems that Cycles' glass caustics creates an unfortunately large number of fireflies (...
41
votes
6answers
31k views

How to illuminate the darkness inside glass objects in Cycles?

My model has a clear plastic (or glass) dome with objects inside. The objects appear dark. I've tried the glass shader with color 100% RGB, with very small IOR, and using just a refraction shader. ...
5
votes
3answers
5k views

Why does an object with a glossy shader render in black?

When I apply a glossy shader to the material of my text, the text becomes just black. Why? I have lamp and everything, but the problem persists. The text is red before I add the glossy shader. I'm ...
35
votes
3answers
12k views

Iridescence In Cycles?

Is it possible to create an iridescence shader in Cycles? Specifically for something like DVDs, soap bubbles, engine oil, etc.. I know about this technique for a DVD material, but it doesn't properly ...
21
votes
2answers
31k views

Shader nodes are missing?

I have blender 2.69 and I've been following a tutorial on how to make text. The only problem is when I go to add a glossy shader in the node editor it does not exist. Neither does the shader category....
15
votes
3answers
3k views

reflecting direct light on glossy surface in Cycles

Working in Cycles. Say I have a "disco ball" with a glossy shader. I'm pointing a spot light to it, and I'm trying to have the reflections of that light illuminate the diffuse material on the walls ...
24
votes
7answers
67k views

How to render cartoon style with completely flat colors?

How to render perfect cartoons in blender? Whatever the engine is (internal or cycles) I always get that shading transition somewhere on the model. The first picture is in blender internal render ...
3
votes
2answers
740 views

How can I render objects with very shiny surfaces?

I am trying to render a kitchen sink / Faucet Here is another reference image of what I want What I have got so far is this Settings for World: I have used an environment map HDRI with 0 ...
29
votes
4answers
9k views

How do I create a reflective white material?

I'm pretty new to this and this is my first question here, any help would be greatly appreciated. So basically what I want to achieve is a floor material as seen in this photo... ...the reflections ...
13
votes
1answer
6k views

Add scratches to a material in Cycles?

Is there a way to add scratches (like on worn metal) to a shader in Cycles?
23
votes
2answers
10k views

Difference between Add Shader and Mix Shader?

What's the difference between Add Shader and Mix Shader nodes with the Cycles rendering engine? I know that Mix Shader gives you more control over the material ratio, of course, but are there any ...
0
votes
1answer
67 views

Bad Shading on Imported Mesh [duplicate]

I have imported a mesh (AutoCad DXF) and I'm experiencing strange shading behavior. I've done the following to try and address the problem with no luck: Recalculate Normals Remove Doubles Delete ...
32
votes
1answer
6k views

How does EEVEE work?

We all know what Cycles is, at least to a first approximation: Cycles is a path tracing engine [...] Specifically, cycles is a "backwards" path tracer, which means that it traces light rays by ...
2
votes
1answer
540 views

Cycles - (Shader) Nodes - inputs outputs - What are the exact data types?

I'm currently "hacking" Cycles to fully understand how it works (right down to the source_code), so I can fully maximize its awesome rendering potential for my own future blender projects. Here's how ...
19
votes
1answer
42k views

How to add bump to shader?

I have a simple diffuse shader. I would like to add some bump to it. How can I do this in Cycles? Where do I plug in my checkered texture.
10
votes
1answer
3k views

How to render lightning in Cycles

How can you render a lightning bolt using Cycles?
7
votes
1answer
1k views

How to make a good glow effect around a sun?

I am trying to figure out how to make the space around the sun glow and than fade away into darkness. The sun was made in blender using cycles render and several noise textures. The glow I have ...
3
votes
1answer
4k views

Why is my mesh inversed when Imported to Unity?

So I modeled this sword and all the parts were separate meshes. I used a mirror modifier when I was modeling and then I applied the modifier when I was done to make the parts into solid meshes. Put a ...
2
votes
1answer
679 views

Weird shading effects when rendering at long distance

I'm trying to render a cityscape, but I get some weird dark patches on the buildings all the time. The scene is just conceptional, so it's all without textures or fancy reflections/ transparacy. The ...
1
vote
2answers
2k views

Object renders black

I've imported an .OBJ file to my scene and it looks good in viewport, but when I try to render with F12 it's completely black. Clearing custom split normals data (in object data panel) removes black ...
66
votes
1answer
26k views

What is a BSDF?

The term "BSDF" is common in Cycles shaders such as "Diffuse BSDF" and "Glass BSDF" but is not present in all names ("Emission" and "Mix Shader" are two such examples). What exactly is a BSDF?
27
votes
1answer
6k views

How do I emit light from inside a object?

I need to know how to make the buttons in my blender project look the same as in this photo. Mine all look pale, even with the emission material. Is there anyway I can get my buttons like this?
12
votes
3answers
2k views

Is there a smart way to apply a better transition between colours while maintaining one solid colour per face?

I recently started using blender for a project. I have tried using a color ramp with a transition between the 4 colours, but the result is too smooth when applied: Im aiming to achieve this kind of ...
14
votes
1answer
1k views

How to: Exponential Fall Off for Volume Density?

I'm trying to create a photorealistic Earth Atmosphere. Several papers written on the topic of atmospheric scattering state that our atmosphere's density has an exponential fall off, with most of it ...
11
votes
1answer
4k views

Particle Color based on where the particle is emitted?

Is it possible to change a particle's color to the color of the face/texture part it comes out of in cycles? I want it to be the color of the face after shading and all that other stuff
6
votes
1answer
4k views

Objects behind glass appear too dark

It's so dark that the eyes are invisible. Blend file:
4
votes
1answer
3k views

Objects, shadows and reflections not rendering in EEVEE

I started to work with EEVEE short time ago and I was amazed by the capabilities of this engine. However, I noticed something strange when I was rendering some tests. Some objects/reflections/shadows ...
3
votes
3answers
1k views

Import Toon Shaded Character to an outside program? [closed]

I made a character and added toon shading but I can't see it. After some research it seems that toon shading is only visible if you render the image with a camera in the blender scene. I want to ...
17
votes
2answers
3k views

Custom fresnel curve

When it comes to recreating the shading of metals like chromium with such extreme reflection curves it's obviously inaccurate using one averaged reflectance curve. Also eye-balling the values appears ...
8
votes
3answers
5k views

Procedural polka dot pattern with cycles

I would like to generate a polka dot pattern using material nodes. In the meantime I found this script which seems to achieve exactly what I want. However, when I create a script node, link to the ...
13
votes
2answers
13k views

How can I add Lens Flares/Halos?

Is there an addon, or an easy way to add lens flare effects or light aberrations in Blender? I've been using Blender for a while now, and it's very time consuming to always have to export to another ...
11
votes
2answers
4k views

Can I refer to another object's properties from a Cycles node shader? Drivers? If so, how?

I am trying to develop several shaders that need to take into account the position or orientation of another object in my scene. Seems like a generally useful thing to be able to do. Here's an ...
7
votes
2answers
2k views

Slope of geometry as `fac` input for cycles material

I have a terrain with two materials going into a Mix Shader, I want the fac input to be the slope of the terrain. Steep parts should be one color, flat part another.
4
votes
1answer
651 views

Smooth shading / Sub Surface / Distorted render

I'm new to Blender and have been following along tutorials on youtube and I must say, and loving it. So I've reached a gap in which I can't find any help on. In short, I'm trying to design a grinder ...
12
votes
2answers
14k views

Different image textures for one material (Cycles)

With Blender Internal (2.79 and older), you can add a UV layer, assign images to each face, Then enable the materials Face Textures option. Is there some way to to ...
7
votes
3answers
3k views

Shader: Rounded edge between the two intersecting faces?

Is there way to do "Rounded Edge Width" in Blender? It's familiar for me from Modo. Anyone know the trick? Like Modo's Rounded Edge Width. Couple links for reference: From the modo documentation: ...
20
votes
2answers
10k views

How to change hair color along length of strand?

At some point (not right away), I'll be wanting to make a character model which has multicolor hair. Namely, it will be one color closer to the roots, and another color closer to the tips. Is there ...
12
votes
2answers
3k views

Can cycles Wireframe Input be coerced into displaying Tris, Quads and Ngons

edit 2 years later: Here is an alternative answer that meets the desired end-result using FreeStyle. Is there a way to make the wireframe input show the geometry as BMesh polygons instead of the raw ...
3
votes
3answers
2k views

Glass acting as a lens?

What could be causing my plane with glass shader to act like a lens? I want normal glass, and already have tried 2 different node setups, but it still acts like a lens. Render: Glass node setup 1: ...
2
votes
2answers
919 views

Transparent image like a decal on mesh with principled BSDF shader

I have done this before, but that was before the principled BSDF shader existed. Now I'm trying to do a similar node setup with the principled BSDF shader instead of the diffuse BSDF shader, but the ...
2
votes
1answer
258 views

BSDF options not availble in texture

I am learning Blender and I like to search tutorials but on some steps, I need to use BSDF but I have this: Is there anyway to change this?
2
votes
1answer
8k views

How do you overlay an image on a shader in Cycles? [duplicate]

I'm trying to overlay an image on top of a shader to create the effect of having printed onto metal like so: I'm using an Anisotropic shader for the underlying brushed metal and have UV Mapped a PNG (...
0
votes
1answer
2k views

Cycles spotlight creates fireflies on glass and glossy materials

Its about spot light lamps in combination with Cycles Glossy and Glas Shaders. In this post i only make use of unchanged shaders "Glossy BSDF" and "Glass BSDF" from cycles. The blend file is here: ...
0
votes
1answer
120 views

Auto Smooth Shading of old file

I tried to use a .blend file that is 1 year old. I wanted to use the mesh to animate something, but I noticed I used EdgeSplit instead of auto-smoothing a year ago. Here is the problem, when I "remove ...
7
votes
4answers
5k views

How to get random color variation on a single mesh?

I am trying to get color variation and to bake it in a single mesh but the Object Info Random only works if i separate the meshes. Is there an alternative way to get the same result with the meshes ...
25
votes
1answer
2k views

How to make a “reflective tape” material in cycles?

How can I make a cycles material that gets very bright when a light is shown on it, yet still has normal colors? I'm talking about the "Retroreflective sheeting" that can be seen on road signs, the ...
11
votes
1answer
770 views

Recreating Mandelbulbs with math nodes

I'm trying to recreate a Mandelbulb using Volume and math nodes in blender. I have been able to create a Mandelbrot with math nodes but I am having problems making it 3d. I tried translating this ...
8
votes
1answer
15k views

How to make a crystal material?

How to make a crystal material in cycles with the node editor? Much like this - Not exactly like the image because I'm trying to make an object with a light that is emitting from the center of the ...
6
votes
2answers
2k views

Cycles Material — A kind of glitter

Hi guys, I'm trying to simulate the metal flakes that you can see in this helmet. It looks close to a metallic paint + flakes, but it definitely is something else. I found a few materials that come ...
5
votes
1answer
3k views

How do I create a magnified glass effect in Cycles?

Currently I'm trying to create a sniper rifle scope, and would like to create a magnified scope effect (with modeled lenses if necessary). But I'd like to make this a more general question, as that ...