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.

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8
votes
2answers
606 views

Emission shader color saturation clipping

I stumbled on a trick that while working on one project that will help me with another, but I am not sure why it works. When I set the color of an emission shader to a saturation of 1 the shader ...
6
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1answer
881 views

Volume emitter that is more intense towards the outside of the object

How do I create a volume emitter shader that is more intense towards the outside of the object? I would basically like to create tubes that look like the blue (not purple) tubes in this image: (...
2
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0answers
525 views

Glossy Text shader material on soft toch paper

I can't get the right shader material for text like this: I've used a texture uvmapped on a plane, with alpha channel, and assigned two shaders one Glossy and one Glass with IOR of 1.406 (plastic) ...
4
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2answers
2k views

What units does the cycles SSS scattering radius use?

As a sort of follow-up to this question, what units does the scattering radius use on a cycles subsurface scattering shader?
12
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1answer
4k views

What does the radius vector do on an SSS shader?

What exactly does the radius vector value on a subsurface scattering (SSS) shader do? In his SSS tutorial (making realistic bread), Andrew Price says that the XYZ values translate to the RGB values ...
10
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1answer
3k views

How to render lightning in Cycles

How can you render a lightning bolt using Cycles?
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0answers
2k views

How to export smoothing groups made with Auto Smooth?

I know that there is an Edge Split modifier, but it actually splits geometry edges, which causes problems with further modeling. When I use "Shading: Smooth" and then enable Auto Smooth, it works nice,...
2
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1answer
765 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
1answer
2k views

Setting up materials for export to Collada

I'd like to create some game assets that need to be exported in the Collada file format. I want to be able to create diffuse, normal and specular maps on my models and then export them to a single ....
3
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2answers
685 views

Using Blender to investigate the cast of shadows from an object onto a specific point in space

I think that Blender might do what I have in mind, but I am not a Blender and Python guru, so I am looking for directions. I need to determine if a point in space is obscured by an object, i.e. does ...
13
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1answer
7k views

Add scratches to a material in Cycles?

Is there a way to add scratches (like on worn metal) to a shader in Cycles?
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3answers
4k 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: ...
8
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1answer
2k views

What is wrong with this OSL shader?

I don't understand what is wrong with this shader ...
2
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3answers
547 views

What is creating smudging in my render? [duplicate]

The below given image is rendered with 1000 samples with appropriate light settings but the final rendered image is coming as smudged. Is there any solution to fix this? EDIT : please find the link ...
1
vote
1answer
383 views

Is there a way to have my emission shader only affect the particle system? [duplicate]

I have a scene that has a particle system and other objects. The particles are an object with a pure glossy shader. I have a plane that I have setup as an emission shader to reflect off the particles. ...
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 ...
5
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1answer
1k views

Creating a gravity lens effect?

I was thinking of doing some scifi models, and it would involve a kind of gravity lens effect, where light is distorted and warped by a powerful gravity field. I have attempted to create a ...
5
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1answer
10k views

When can a Color Ramp be used to create a gradiant in a Cycles shader?

When can you use a ColorRamp node or better to say where can you use a color ramp to manipulate the color of the mesh to be a gradient and not solid? I tried to plug the ColorRamp in to the Color ...
2
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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 (...
22
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2answers
11k 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 ...
0
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0answers
565 views

Blender 2.60: GLSL Shading problems on Blender Game Engine - objects not visible

I have a problem with my blender scene when I play it on the blender game engine. When I set GLSL shading and play my scene using the embedded game engine (P on ...
3
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0answers
464 views

OSL: Giving the texture method a color instead of string

Is there a way to give the OSL method texture(string, float, float, ...) a color input instead of the string which reads an image file? Or is there any type of ...
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0answers
55 views

is it possible (if so, how) to use a part of a material applied to a mesh as emitter?

I'm making a material (cycles) for a mountain : I would like to add some grass (hair) in the green zone. Is it possible (if so, how) to do that by using the green part ?
2
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1answer
110 views

How to fix single face mesh?

The model in Blender shows the mesh double faced and good looking but when exported into game looks like this. How can I fix it?
4
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1answer
580 views

Object appears jagged in final render?

When I try to render a glass material, in rendered view it looks good, but when rendered, I get this wavy effect and black outlines. Polygon detail: The scene is just a glass object with a glass ...
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0answers
138 views

Materials defined by a texture

I have an Earth object where the surface would be with a Bump map and the ocean without it. However, the bump texture is for both and I want to block the parts for the ocean using a black and white ...
3
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1answer
2k views

Light path - Transparent depth issue

I made an earth object and gave it a material including the usage of the new input of the "Light path" node "Transparent depth" which makes the back faces invisible. However, when an object has ...
2
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1answer
587 views

Why are objects appearing as a “ghostly” image after rendering?

I'm fairly new to Blender, but I hope there's a simple solution to this issue. In Cycles I'm trying to make a composite of (soon-to-be) animated objects and video footage. I've used nodes to apply ...
0
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1answer
2k views

How to color a perfect reflective material in cycles?

This is maybe a funny question, but when I color a reflective material, I just change the color of the "glossy" shader, but when it comes to darker colors, I'm lost, because the gradient from dark to ...
5
votes
1answer
691 views

Toon shader making jagged shadows

I've tried to find an answer but so far no luck. All of the ones I could find went over my head. So I'm caving in and asking this question myself. I'm very new to Blender and 3D stuff, so bear with ...
2
votes
1answer
986 views

Can the blender game engine render diffuse material nodes?

I have a plane with a diffuse material of a blue color, a cube of a red color. I can see them perfectly well using cycles. When I use the game engine render all I get is gray no colors. Can the ...
0
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0answers
271 views

Object emission controlled by sunlight

I asked this previously for my Earth project but it was never given an answer and was marked as a dupe which it wasn't as the question it was linked to was about textures being controlled by light, ...
2
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1answer
118 views

Do I need to recompile blender when changing C++ Shaders for Cycles?

I just needed to know the way of developing native cycles shaders (closures). So, if I change, for example diffuse closure(another implementation of roughness), will I need to recompile Blender from ...
3
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1answer
1k views

Is the ocean modifier better than the fluid simulation for making an ocean? [closed]

Is the ocean modifier better than the fluid simulation for making an ocean when it comes to visibility under the surface of the water, reflections and splashes in the water? Which one is better for ...
8
votes
1answer
16k 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 ...
5
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3answers
4k views

Hard-edged polygons with normal maps

Background I'm making a character for my game (with MakeHuman), and I wanted to add normal maps to the characters. I generated one low-poly character and then one high-poly using a bunch of Subsurf ...
2
votes
1answer
273 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?
0
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1answer
312 views

Weird fuzz/shading error on a render of a house model. Help? [duplicate]

As you can see in the render above, there is some weird fuzz on the side of the house, as well as some sort of spiky shade in the triangular area. I would like to know what causes that fuzz. More ...
9
votes
2answers
15k views

How can I make a surface look wet in cycles?

I am trying to recreate a wet road with lights reflecting off of it. I started by making the object glossy but this did not give a very realistic look I think I need to increase the specularity of ...
2
votes
1answer
779 views

BGE GLSL materials in embedded player

I am on the very beginning of creating a game. As a GE BGE was chosen. At the moment a problem popped out: I want to use real-time shadows and when I set Shading to GLSL in the Render options I get ...
0
votes
1answer
157 views

Is it possible to render an object just with the normal map?

When an object with a normal map is rendered, there are always artifacts of the polygons of the original model on the outline of the model. Is there a way to make them invisible? Here is what I mean - ...
3
votes
1answer
490 views

Override final pixel color in a Cycles/OSL shader? [duplicate]

In the Renderman Shading Language, the whole purpose of a shader is to determine the final pixel color for each fragment. You have complete control over what the shader does and what the final color ...
4
votes
1answer
1k views

Cycles - What is the expected range of values for Displacement?

Let's say I have the following [kinda boring] shader setup: For what output values of the Voronoi Texture will the surface appear to be displaced outward? How about inward? In Houdini, negative ...
24
votes
7answers
73k 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 ...
1
vote
1answer
385 views

How to add glossiness on a cartoon shading?

I know I asked something like this before, but this is more centered on the glossiness. How can I add glossiness on a material that has a toon|diffuse shader on it? Do I have to combine the toon|...
4
votes
2answers
3k views

Simulating rounded edges on a mesh

I'm looking to create the illusion of rounded or beveled edges without actually adding new geometry as a batch process for multiple types of meshes, from something as simple as a cube to very complex. ...
10
votes
1answer
3k views

Find users of a material / texture / image which is not displayed in the outliner

How can one search by name for a material / texture / image datablock that is not displayed in the outliner, for example because it's buried somewhere deep inside a node tree? Let me please describe ...
4
votes
1answer
12k views

Cycles: Assign material to vertex group

I know it's possible to have multiple shaders for one object with the internal renderer. This video explains the process. Can I use Cycles to assign a material to a vertex group so that a single ...
3
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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 ...
7
votes
3answers
22k views

Cycles Materials to Unity Shader

I have a really nice looking crystal material using cycles applied to my object; it's pretty fast and very simple - Just one glass node. Is there any way to convert this into an HLSL shader for use ...