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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6
votes
1answer
911 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: (...
6
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1answer
165 views

How do you get a trace around your shadows?

I need to trace the shadows of an object, like getting a red line around the shadow(shadow itself is not red). I know how to trace an object itself but not the shadows on that object. Is there a way I ...
6
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1answer
823 views

Cycles. Masking shader. How to make objects disappear in plain sight.

So I have a scene. I want to slide out a text, for example, as if it was hiding behind an invisible wall. I know that you can achieve this effect with a boolean modifier... but I can't use it in this ...
6
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1answer
527 views

Make blue glass shader in cycles

I would like to make a blue glass shader in cycles. Something like this: This was my first trying but I think it's terrible. And here's my second trying but it doesn't look well. Is there any way ...
6
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1answer
2k views

Realistic aquarium water?

Does anyone have any idea on how I can create a realistic shader to emulate clear water? I am struggling because while clear water looks clear it also tends to change the color temperature of the ...
6
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2answers
795 views

Why do shaders have a normal input?

It is probably a very stupid question but why do have many shaders (diffuse, glossy, ...) a normal input ? What happens with that normal input ? Maybe it helps when I clarify the background of my ...
6
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1answer
5k views

How to properly use git with blender?

We normally save backups with .blend1 and so on (but I will ignore all the .blendNumber files), but if I wanted to have a repository and maybe 2 or more people working on it at the time, how should I ...
6
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1answer
1k views

Realistic vegetable shading

How can I have the pepper look more realistic? I have been trying a few different nodes options as shown below in Cycles, but something still looks like a plastic Node with Subsurface scattering: If ...
6
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1answer
2k views

How can I use vector mapping to control the Anisotropic shader?

Is it possible to use the Anisotropic shader with texture vector mapping, as with the other nodes? I don't see the "vector" input in that node... So there seems to be no way to plug the UV (or ...
6
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1answer
1k views

Volume scatter shader causes black spots

I am following Andrew price's video on making clouds but my clouds are rendering with black spots on them. I have tried turning up the maximum transparency value under light paths but there is no ...
6
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1answer
3k views

how can I make an emission shader shine through a transparent material?

I am trying to use the emission shader to make a light, but I realized that it seems to be only shining through to a limited extent: These are the nodes for the light: These are the nodes for the ...
6
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3answers
28k views

How to import Downloaded Materials/Files?

This is an absolute beginner question, I'm hoping it's not to broad, I will attempt to narrow it down. I have just downloaded a handful of .zip files for several material packages (all for cycle ...
6
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2answers
3k views

Can PBR be “faked” in Blender Internal or the Game Engine?

Physically-Based Rendering / Physically-Based Shaders My very basic understanding of physically-based shaders is that they have an accurate Fresnel curve (becoming more reflective at grazing angles), ...
6
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1answer
1k views

How to add dirt to a glass shader?

I am rendering an image of a grotty old looking light-bulb. I can make a decent clear glass material, but, not a perfect one. I simply cannot get the dirt textures to overlay properly. How can I add ...
6
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2answers
1k views

Is there a way to round corners on material level?

Is there a shader that can be used on material level that will give the effect of round edges when assigned to an object? I'm not looking to increase the mesh density, I remember in 3DS Max, Mental ...
6
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1answer
490 views

getattribute() in osl is not working

I'm trying to get the UV coordinates of from UVMap using getattribute() as follows : ...
6
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1answer
740 views

What are some good low-poly scene techniques?

Recently I have noticed that low-poly art has really come into vogue, and I thought it would be helpful if we could collect some helpful concepts and techniques in how to replicate this style. How ...
6
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1answer
338 views

Which is the best way to generate 2D mathematical surfaces with a different color each side

Here is a handy mobius strip. Mathematically it has one surface, but in Blender it's just a twisted flat mesh stitched together carefully. I added some icospheres as breadcrumbs to guide the eye. I am ...
6
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1answer
974 views

Why is the result of this GLSL shader asymetric when rendering with stereo “Side-By-Side”? [closed]

I am trying to achieve an inverse lens ditortion for the Oculus Rift during Side-By-Side stereo in the game engine. I am using a custom Filter2D with this GLSL shader. The distortion can be achieved ...
6
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1answer
674 views

Applying gradient texture to deformed volume based on Z coordinate

I'm trying to apply a fog to my grass plane, which is deformed in multiple ways (plane is subdivied + waved by hand + 2x modifier: displace. The fog is supposed to be dense at the bottom and disappear ...
6
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1answer
1k views

Volumetric shader not showing up in render

So, I have a problem using the Volumetric shaders in cycles. When I am viewing them in the viewport, they seem to be coming out perfectly fine, whereas when I render them, only the glass surface is ...
5
votes
1answer
3k views

How can I make a realistic cement shader with old/cracks/crumbling/paint chipping on top of a texture?

a link to an example of the desired cement can be found here: How to create and animate the water reflection (Caustics) on an object? Note the cement next to the water....looks realistic, faded, warn, ...
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 ...
5
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2answers
1k views

How to set default shader to principled brdf

I saw in this youtube demonstration, that this is possible. I just can't imagine where I can change the default shader. I want the diffuse white shader to be a diffuse white principled brdf, when I ...
5
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2answers
638 views

Basics of Cycles shading

I have been using Blender for few months on and off. I keep learning and forgetting how to do things. The problem is I don't have a solid understanding of few key things in blender especially about ...
5
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3answers
3k views

Flat vs smooth shading in photo-realism and glossy shaders

I understand flat shading is a big no-no for parts of the geometry that curve, so transition between face do not show. I also understand the difference in the viewport: flat shading gives a single ...
5
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2answers
189 views

How to blend between textures easily using nodes?

So, I have a system that basically allows me to blend several images together over time. However, it is a horrible system. There are keyframes tightly packed keyframes all over the dope sheet. Here ...
5
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1answer
1k views

How can I create a single Cycles texture with a different image for each object it's assigned to?

For a model I've made I'd like to keep the basic properties of the Cycles material (shader type etc) the same for most of the objects that make up the model, but have a different image mapped to for ...
5
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1answer
5k 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 ...
5
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2answers
3k views

Blender cycles glass from sideview not transparent at all

From top view glass looks like glass but from side view It looks like this: So, why its not transparent and how I can make it transparent ?
5
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1answer
440 views

double sided polygons in BGE

Is there a way to render both sides of a polygon in the game engine? Because as far as I know polygons have "normals" which means that the side with the normal is what will be shaded on the polygon, ...
5
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2answers
136 views

How to create an enamelled cast iron shader in Blender?

I am trying to create a round cocotte as in the image below. This cocotte is enamelled cast iron. And my question is about how to recreate the enamelled cast iron in blender. Traditional ...
5
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2answers
2k views

Slime effect material

I know the normal + glossy effect but I want the yellow to red color effect by light. thanks this is what I got so far. It kinda looks like the picture but the sss is not emitting the yellow light. ...
5
votes
1answer
408 views

Emitting Light from Object

I'm trying to create a semi-transparent wrapper around a light source. This could be gems, brightly lit console buttons, magical semi-transparent glowing fruits, whatever. Anywho, I tried the ...
5
votes
1answer
706 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 ...
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 ...
5
votes
1answer
202 views

How to make a sine wave distortion effect?

I'd like to achieve a simple wave distertion effect like the reflection has in this image: I'd like to animate the reflection so I tried to do it with material nodes. I thought I should mix the UV ...
5
votes
1answer
976 views

Transparent Depth and Transparent Node not working

I am trying to create a shader that renders visible when looking at it from behind another invisible object, and vice versa. However, when the object is supposed to be invisible, it renders a black ...
5
votes
2answers
478 views

Cycles shader colour: values above 1

A quick question about shader surface colour values in Cycles. If you set the surface colour of a shader to values greater than 1, for example the diffuse shader in the image below: Can it be said ...
5
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1answer
2k views

Is there a way to use Textured Solid without getting a Backface Culling effect?

I am trying to have a blender file using Blender 2.69 that allows you to look around and also see textures. Putting the shading on GLSL and turning on Textured Solid make the textures render great, ...
5
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1answer
763 views

Can a glass object be made to act completely transparent to only the object contained inside of it?

Say I put Blender's iconic monkey inside a glass sphere (hollow, but solidified around its exterior). All lamps and camera(s) are outside the sphere. Using Cycles. What I want to accomplish is for ...
5
votes
1answer
730 views

Shadows for games

So I don't really know if this was asked before, but I sure couldn't find it, so at least this’ll make a real nice link straight to the right answer. I have a pretty simple scene, and right now it ...
5
votes
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
votes
1answer
323 views

How to simply find the code/script behind the volume scatter node so I can see the math?

tl;dr I need help finding the code or OSL script for the volume scatter node. Not asking how it works, just a specific, noob-friendly instruction how to find it, or a link to it. Blender is big, and ...
5
votes
1answer
321 views

Which normal input socket should I use when I have a mix between shaders?

Since we have the option to use normal maps in Cycles via the normal input socket, this question frequently pops in my head: In the simplest mix, diffuse and glossy, should I connect the normal map ...
5
votes
1answer
235 views

Can the areas of an object in shadow be accessed in Cycles

In Cycles can I use the amount of shadow cast onto an object as a Fac. input of a mix shader? This would be useful for setting up a Frost / snow material that is visible in shadowed areas but has ...
5
votes
1answer
818 views

Rendering transparent body and opaque edges

I want to create a material for an object such that the body is semi-transparent and only the border of the object is opaque or darker. Is it possible to develop a shader for this ? Or do we have to ...
5
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1answer
346 views

Smooth shading and colored shadows

When I set the shading of a mesh to smooth, the shadows on the mesh are always black when rendered, but I need them to be blue. When I set the shading to flat the color of the shading turns out fine. ...
5
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1answer
321 views

Need normalized distance between geometry bounds

I would like to get a value between 0 and 1 of the distance between the mesh bounds in an axis (Y), depending on the X value. not sure this is crystal clear but the screenshot says more than words :) ...
5
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1answer
2k views

How do you make a cycles volume material fade to invisible at the edges?

I'm trying to model a spark using Andrew Price's tutorial (Blenderguru), but the sparks always look wrong. You can always see the outline of the ico sphere. I'm wondering if there's a way to soften ...

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