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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296 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 ...
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2answers
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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 ...
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1answer
768 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 ...
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1answer
156 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 - ...
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1answer
467 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 ...
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1answer
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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 ...
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7answers
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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 ...
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1answer
358 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|...
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2answers
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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. ...
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1answer
2k 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 ...
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1answer
11k 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 ...
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3answers
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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 ...
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3answers
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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 ...
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1answer
226 views

How to improve this rendering so it looks more like the target image? (Disaster) [closed]

I'm trying to replicate the following image using Blender: the image http://dl.dropboxusercontent.com/u/62862049/Screenshots/03k.png For this, I've used MakeHuman to generate a similar-looking human,...
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3answers
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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 ...
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GameEngine: KX_BlenderMaterial vs KX_PolygonMaterial

I have a question about the material types in the game-engine. e.g.: 2.66 Blender API - KX_PolyProxy(SCA_IObject) 2.66 Blender API - name ~ The material of the polygon. When is the material a ...
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0answers
473 views

How to do multi-pass rendering on customised shaders? [closed]

I'm using customised shader to achieve a specific aspect. I'm confused by the fact it is dealt with by the game engine, not the rendering engine (??), but my actual question is: how do I do multi-pass ...
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1answer
3k views

How to access the window width/height inside a GLSL Shader?

Inside a Python script defining a GLSL shader used on the game engine, how do I access the width/height of the game window?
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1answer
199 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 ...
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1answer
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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.
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2answers
396 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 ...
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1answer
234 views

Help with rendering shadows properly

Im pretty new to blender and am in a bit of a bind here. I have this distorted water simulation that i am attempting to make look like snow (not the best but it works for what i need it for) and i am ...
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0answers
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Cycles SSS surface colour [closed]

I am looking at improving a characters Skin material node setup. Most of the Node setups I have seen for cycles, including the Arnold Skin port basically involve (not including gloss, bump etc) ...
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1answer
2k views

Can't change to smooth shading

I am building a car engine and I want to set it to smooth shading. But for some reason it does not work. Has anyone an idea how to fix that? Here you can download the .blend file.
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2answers
5k views

RC 2.7 Blender/Volumetric Shading Cycles

I went onto blender.org and saw a Release Candidate for Blender 2.7 came out. In the description it seems the long awaited volumetric shading in cycles has been released. From what it sounds like is ...
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2answers
344 views

volumetric shaders missing in blender 2.69

I have installed blender 2.69 and it says that volumetric shaders will be supported but i cannot find them. Do i have to download then as an add on?
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1answer
268 views

I'm trying to learn Blender to animate. Am I doing it right? [closed]

The idea of making 3D animations to tell stories has always been attractive to me. Yesterday, I decided to stop hesitating and began learning to use Blender. I am using the YouTube channel tutor4u's ...
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1answer
3k views

How to mix more than two shaders?

How can I go if I want to mix more than two shaders? Lets say that I have a diffuse and a glossy shader pluged onto a mix shader and than I want to put in a third shader (or more). How can I do that?
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2answers
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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....
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1answer
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Bump map connected to Glossy shader Normal input causes line artifact in render

I wanted to plug a bump map into the normal inputs of a Diffuse and a Glossy shader. But if that is done, for some unknown reason it renders only on part of the mesh. A line across the image will ...
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0answers
30 views

Why do i get a strange black shadow when i smooth my mesh? [duplicate]

I finished the mesh but went i try to smooth it i got a rare black shadow : 3D viewport - no smooth 3D viewport - smooth Render - smooth Render - no smooth
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1answer
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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 ...
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4answers
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How to make a mesh look like it was 3D printed

How can I make a mesh "look 3D printed", i.e. you can see the layers. e.g.: You see all those layers? How can one do this? Maybe a bump map? or is there an option to separate a mesh into pieces, i.e. ...
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1answer
597 views

Is it possible to render AO with the OpenGL render?

Is it possible to render AO with the openGL render? I know there is a technique called SSAO which is used in some video games, so it should be possible. How can I achieve this?
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2answers
3k views

Cycles toonshader vs Blender Internal shaders

Is Cycles toon shader more accurate than Blender internal toon shader? I,m currently working on a Webcomic and would like to have my characters as 3D characters in a 2 tone cell shading style. This ...
2
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0answers
256 views

Get name of bgl_RenderedTexture in Python

I want to let the GPU create a mipmap for the framebuffer texture that's available as bgl_RenderedTexture in the custom filters. It shouldn't be difficult. I just put some code into the post_draw ...
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3answers
13k views

What does the Roughness setting on a diffuse shader do?

What does the Roughness setting value in a Diffuse shader actually do? The wiki says: Surface roughness; 0.0 gives standard Lambertian reflection, higher values activate the Oren-Nayar BSDF. But ...
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5answers
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What is the technical difference between a diffuse shader and a rough glossy shader?

If I understand correctly, the roughness value on the glossy shader controls the amount of random scattering of rays that reflect of the surface of the object, with ...
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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, ...
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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 ...
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2answers
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Is it possible to simulate Fluorescence in cycles?

It it possible to create a fluorescence shader in cycles? From Wikipedia: Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. More ...
2
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1answer
896 views

Compositing output image shading

Is it possible to control the shading via a node in the compositor? I would like to generate two output images, one which has material shading and one without any shading - just the colors from the ...
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1answer
1k views

OSL and raytracing

I don't know much about the Open Shading Language, but I need to know if it can do a few things before I decide to spend the time to learn it. Can OSL manipulate rays that hit surfaces? Such as: ...
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3answers
8k views

Is it possible for a emission shader not to cast shadows?

Is there an option, like on lights sources, to tell the object that has an emission shader to not cast shadows in the scene?
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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. ...
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1answer
318 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 ...
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1answer
2k views

Make White Transparent shader that is not transparent?

How can I make a slightly transparent white Transparent material in cycles, when making the Transparent shader white makes it completely transparent and invisible?
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2answers
2k views

Convert cycles closure (shader) output to colors?

Is it possible to convert the output of a cycles Shader node to colors? For example to use an ambient occlusion shader output to multiply or darken act as a mix factor between other shaders?
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1answer
2k views

How exactly does the Sigma parameter affect the Velvet shader?

How does the Sigma value of the Cycles Velvet BSDF shader work? Intuitively, it seems to serve as some sort of ceiling value for the shading. How does it affect the light bouncing? I've looked at the ...
12
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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 ...