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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71 views

Select faces by shader?

Say I have a Mix Shader in a node setup. Say I have a Wave Texture connected to the 'fac' input on this said Mix Shader. I'm assuming that this functionality isn't built into Blender, so how can I ...
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1answer
397 views

How would I make an Iridescent Yellow Chromate material? [duplicate]

How can I make this rainbow looking iridescent yellow chromate plating found on metals?
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1answer
420 views

Glossy node isn't reflecting

On the neck label of my Jack Daniels bottle I have the glossy node plugged in but as can be seen in the image -- it's not reflecting. I tried adding another glossy to 'double' the glossiness but that ...
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1answer
772 views

Conflicting faces rendering as black

In my blend file here, I'm trying to write a shader that uses a gradient to mix between transparency and the surface material. So far, I've managed that. But when transparent, the object shows black ...
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95 views

Is it possible to determine emission shader value by other lights?

Is it possible to take a lamp/sun/point light and use it as a value on the scene to tell materials that are not affected by the light source to emit their own light? This is photoshopped example of ...
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1answer
258 views

How to make original full-pass image from separate passes?

I'm trying to create an image from separate passes. That is, I have a result image, which without altering the composite Combined RGBA buffer looks like following: On this image you can see a cube ...
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1answer
731 views

Simulating the atmosphere

Some months ago I watched this video of Blenderguru about "How to create a realistic earth in blender". In this video blender render is used and now that I understand texturing in cycles a little ...
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2answers
230 views

Cycles Rendering Issue

I have an issue..when I use cycles render and I use color, normal,occlusion and spec map I see some lines.(I think they are the marked seam lines).It look like the 1st picture here. But when I take ...
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1answer
1k views

How does Color Mix (Difference) node work?

How does the above node setup work, and what will happen when I change the Fac value (0-1)? What calculation is the mix node doing here when set to Difference?
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1answer
236 views

One part of the model looks glossy?

Why does the head look so shiny compared to the body? I haven't added any texture yet, I think. (I'm still new to blender) I tried changing the matcap but it still looks very glossy. How can I get rid ...
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0answers
23 views

No materials showing up in cycles [duplicate]

So im trying to make a minecraft animation test with my world and i want really good lightning. The only problem is when i render in cycles none of my materials show up like they do in blender render.
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1answer
329 views

Weird lighting and how many tris for games

I'm new to blender, I am looking to create a game using unreal 4. That being said, how many tris are too much? currently working on a character's boots and am riding at over 2000 for just one of them....
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61 views

What is the significance of the value of the limit on the roughness attribute of the Oren Nayar shader?

In exploring the settings of the Oren Nayar shader in the Blender internal rendering engine, I find that there is an upper limit of 3.14 for roughness. Is this the constant Pi? Why is this the ...
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1answer
441 views

Materials in the game engine have no shadows

I am trying to make a game in blender, but any material that I add to anything in the game has no shadows
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1answer
136 views

Distorted Shading on Model

My model keeps getting distorted shading despite my attempts to fix it. I'm guessing it has to do with some star junctions on the model. What would be a possible solution to this problem and how ...
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1answer
130 views

Why is blender using so few resources

Right now I am doing the final render on my light-saber and previously when I would render objects with around 1000-3000 samples depending on the complexity it would take maybe an hour but now blender ...
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1answer
733 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 ...
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1answer
155 views

How do I create a shader that is partially emissive for a particular colour, but diffuse if it's grey?

So, I'm trying to make some material that's like lava, with solid, diffuse, grey material, and an emissive shader that's red and orange, using a musgrave and colorramp node. This is a screenshot. How ...
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0answers
49 views

Assigning Shaders Based off UV Map Colours [duplicate]

I am wondering if it is possible to assign different shader's based off the colours of a Texture Painted UV Map that is assigned to an object? I've seen a couple of tutorials that use the Separate RGB ...
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1answer
341 views

Blinking noise on animation

I created Christmas tree using this tutorial (http://www.blenderguru.com/tutorials/how-to-make-a-christmas-tree/). In a words it uses Sapling Add-on(3-level tree) and Hair particle system using 900k ...
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1answer
301 views

How to stop blender from recalculating normals?

I have a mesh (a rock wall) that I would like to split into pieces and export each piece for a game engine. The mesh has a smooth, undulating surface and when all the sections are merged into a ...
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1answer
376 views

Unchecking shadow in Ray Visibility isn't removing shadow

I just started with Blender and wanted to make a cosy low poly cabin in the woods. I wanted to make the window shine a warm glow so I added a plane with emission in front of the window. Now I like how ...
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1answer
437 views

Water in a glass bottle error

I'm having a bit of an issue trying to simulate water in a glass bottle. For some reason there seems to be some refraction that causes the water to bend upwards and creates a weird effect(a sort of ...
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0answers
60 views

Will Blender update OSL specification from 1.5.1 to 1.6? [closed]

Open shading language is a great feature for cycles render(Customizing parameters and algorithm so on. I try to put OSL to my lighting and shading pipeline. But OSL specification 1.5.1 leak some ...
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692 views

Shadeless option missing in cycles [duplicate]

when I press 'N' I'm supposed to find a 'shadeless' option under shading, but I cant seem to make it appear. I've tried hard to find a solution but there doesn't seem to be one. Here's how it's ...
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1answer
385 views

Making a shader that would “fill” an open mesh?

I made a material that mixes two shaders using an empty which acts like a kind of mask for those shaders. If I move my empty up, there will be more blue shader. If I move it down, there will be more ...
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1answer
5k views

Objects behind glass appear too dark

It's so dark that the eyes are invisible. Blend file:
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1answer
186 views

What happens when you plug a BSDF into a value socket?

What happens when you plug a BSDF (shader) socket into a value (float/color/vector) socket, or vice-versa? Obviously there is no way to convert a function to a value, so what does blender do? From ...
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1answer
366 views

Editing group node sockets, with no external input?

Blender 2.76 Is it possible to edit a group node's inputs by only editing the sockets? Without connecting external nodes to the sockets? I have created a group node containing two diffuse shaders, ...
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0answers
2k views

How To Make A Basic Palm Tree

How would i go about making something like this And this was my attempt at making some palm trees :( I want a method of making a palm tree that looks a lot better then my attempt.
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1answer
404 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 ...
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3answers
5k views

What do glossy distribution models do?

In Cycles, the glossy (and anisotropic) shaders have a Distribution option. Since I don't really know the difference, I have always left it at it's default (GGX). So what is a distribution model, ...
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1answer
101 views

What are these strange shades in the BGE?

What are these strange shades in the BGE and how can I fix them?
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3answers
2k 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 ...
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2answers
649 views

How to match material properties to physical reality?

I'm trying to make a realistic gold shader. I would like to know what is the right way to match the information found on refractiveindex.info (for gold: http://refractiveindex.info/?shelf=3d&book=...
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1answer
528 views

Cycles bake inverts a polygon on a normal map. A strange shadows with the normal map

I get a flipped polygon after Cycles bake. How to resolve it? When I apply the normal map I get the strange, sharp shadow on the border between dark side and light side of the cylinder. Is it bad ...
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1answer
524 views

Color Ramp vs RGB Curves in Cycles

I understand that both of them convert color values, but how are they different/similar? In other words, what are examples of situations where one would be better than the other? I understand more or ...
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2answers
1k views

Glossy reflections and smooth shading

I'm having a hard time creating a chrome object with flat faces but with smoothly bevelled edges. If you start with the default cube, add a bevel modifier set to, say, 4 segments, set to smooth ...
2
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1answer
666 views

How can I make the outside of a sphere transparent

I want to make the outside of a sphere transparent so that when I'm looking at it, all I see is the inside of the opposite face. If I'm close enough to the sphere that I can only see a small section ...
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2answers
1k views

Weird invisible face issue

Before we get started - I'm a total newbie to Blender. So, take my terminology use with a grain of salt as I'm probably not using the correct words. I'm trying to make a lantern. I built one in ...
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1answer
483 views

Thickness of objects with transparent, translucent, etc. shaders

Do objects with these shaders need volume in order to work? In other words, can I use an object with no thickness; e.g., 4 points on a plane? I want to put a translucent object in front of an ...
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0answers
79 views

Controlling how deep a reflection goes in Cycles

If I want a reflection on a glossy surface to fade out after only a bit, how can I do that in Cycles? I have tried using a texture to regulate where to have a glossy shader and where to have a diffuse ...
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0answers
196 views

Is there a document describing the Cycles BRDF implementation in detail? [closed]

Where can I find a document describing the way Cycles BRDFs are implemented? I am looking for details on the Specular D, G, F and diffuse.
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2answers
633 views

Blender Internal Noise Texture not showing in Normal channel

I'm using a Noise Texture (shader) with the Normal influence channel (in BI). And it doesn't show in render. Something does show when I check the Color influence, but not Normal influence. I think I ...
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1answer
428 views

Recreating the line detail in shadows from The Wolf Among Us in blender?

This is my first year of using blender so I don't have a lot of experience in blender at all. I'm trying to recreate an effect that Telltale used in The Wolf Among Us for my short film. I don't ...
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1answer
752 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 ...
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0answers
308 views

How do I only bloom solid shadeless colors? (GLSL)

I have a script that blooms based on color value, but I need to bloom only if the color is on a list, the list is (1,0,0),(0,1,0),(1,0,1),(1,1,0),(0,1,1) here is the script I was trying to edit http:...
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2answers
3k views

Normalized z-depth shader (based on the cycles camera data node)

I'm trying to create a shader that displays the normalized (0 to 1) camera Z-dpeth on top of the viewed object. Yeah, I know I can easily do this in post with the normalize node if I render out the z ...
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2answers
3k views

Cycles normal shader with colors similar to baked normals

I'm trying to render my object's normals with colors that are similar to those you get when baking normals (or the matcap normals material), i.e. the color distribution that characterizes normal maps. ...
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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