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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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 ...
8
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2answers
666 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
535 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 ...
4
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1answer
541 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 ...
7
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2answers
2k 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
678 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 ...
1
vote
1answer
490 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
80 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 ...
3
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0answers
198 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
647 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 ...
8
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1answer
438 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 ...
5
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1answer
759 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
311 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:...
3
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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 ...
2
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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. ...
12
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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
4
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1answer
1k views

Shader receive light cast shadow with its color

I'm trying to create shader like this image of dice. As you noticed, there is some shadow from dice which cast color of dice, how can i create something like that.
5
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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 ...
7
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1answer
2k views

Translucent shadow (ceramic material)

I am trying to create ceramic material, similiar to the one on the picture: However I can't figure out, how to add shadow from behind the ceramic part. Translucency nor SSS don't do the trick. As ...
7
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2answers
2k views

How to create a gradient colour like on the picture and the apply it on a mesh

I am making a logo like on the picture with blender , but the colour of the text doesn't come up as it should be .
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0answers
59 views

Change the RT shader used for the 3d view?

The model I'm working on uses a weird Cg-based shader. Is there a way I can run it in the 3d-view so that I can see what I'm doing?
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1answer
703 views

Is it possible to have a Material input node in the Cycles Renderer?

The Blender Render(er) has the so called "Material Input Node", where a previously defined material can be selected. The questions is, whether there is an equavalent for the Cycles Render(er).
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1answer
195 views

Different shading on same objects

These two objects have same settings (same material, same object settings, both are cut out + extruded pices of a sphere), but the smaller one has wery different shading. How to fix? all the normals ...
3
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2answers
4k views

Get glossy shading but no reflections (Cycles)

If you use a glossy/shiny material, it will have certain shading. It will also reflect the world environment color, and nearby objects in the scene. Is there a way to make it so that you still have ...
0
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1answer
163 views

Whether someone has done a user defined version of Blinn-Phong (not Blinn and not Phong separately) reflection model in the node editor?

Actually, I am interested in working with Blinn-Phong reflection model in my rendering process, but unfortunately, there is no such a reflection model in Blender. (Yes, It has Blinn and Phong ...
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0answers
25 views

Weird radial pattern on texture in cycles render, but not viewport rendered [duplicate]

I am having an issue with what I believe is the anisotropic shading on my object. It's causing this weird radial pattern on the texture beneath it in an actual render, but it looks good in the ...
2
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1answer
495 views

How to toggle/highlight interactable items?

in many games the items you want to pick change form when you are near or you are aiming at them. Sometimes they change color to a translucent green, sometimes they shine more than the rest objects in ...
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 ...
2
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3answers
546 views

Face has different shading that rest of object

This particular face has different shading than the rest of the object and i don't know why.
2
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1answer
94 views

Undesired Gradient Shading [duplicate]

I am getting this undesired style of shading which gives a high contrast gradient across panels on a mesh object and even shows up in solid viewpoint mode: What I'd like is a much flatter shading ...
7
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1answer
185 views

Is there a way to determine if a ray is coming from a volume?

I am trying to create a light that only illuminates volume scatters. The input > light path node has "is X ray" outputs for all the various types of rays coming off a surface. However I'd like ...
8
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1answer
3k views

how to make a realistic sugar cube material?

I have been struggling with this for a while, and can't figure out help. I would like to make a realistic sugar cube material procedural, but so far I couldn't manage to get a satisfactory result, can ...
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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
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, ...
3
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1answer
561 views

What elements go into a good material testing scene

I've been searching a bit for the perfect material testing scene, so I'm curious, what are some of the most important elements in a material testing scene?
5
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1answer
434 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, ...
3
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2answers
4k views

BGE everything white in playmode

When I press P to play everything shows up white in the BGE. Shading is set to GLSL, and the objects are UV mapped and textured. It seems that vertex paint is overriding the material for the object ...
3
votes
1answer
1k views

Cycles special Water shader (Low Poly)

I made a low poly planet with mountains and water on it, and I am trying to achieve something like this : (Of course without the rocks in the space and the nice background) I tried several shader ...
0
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1answer
511 views

stripe shader no uv unwrapping

I need a shader that achieves the effect in this image, stripes of different colors. This image was produced by uv unwrapping but that would be difficult to achieve on a very complex object. The idea ...
2
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2answers
542 views

Blending Floor and Background to appear as one

How can I make my horizon/edge of my reflective floor either transparent or blended with the background, so you only see the RVs with shadows and reflections? So far all I've been able to do is set up ...
2
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1answer
999 views

Blender 2.75 Time Node

Mybe somebody knows, how to get Time node in Node Editor in blender 2.75 I am using Open shading Language ?
6
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1answer
334 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 ...
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0answers
460 views

What is the correct way of using specular and gloss textures made by 3DCoat 4.5 “Smart Materials” in Cycles render?

I textured a detail in 3DCoat using a 3DCoat new feature called "Smart Materials". I exported a color/specular/gloss maps. I'm trying to replicate the look i get in 3DCoat inside Cycles render with ...
3
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0answers
517 views

How to set up SSS on cycles for efficient rendering

How do I set up SSS shaders properly to render efficiently in animation projects. Are there any specific optimizations to consider? I am trying to render some orange juice in a bottle and getting ...
2
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1answer
493 views

How can I make this cinnamon stick material more rough and dusty looking?

I would like to make a realistic cinnamon stick texture / shader as shown below. Reference image: my attempt and a close-up render - I could come this far, but i can't figure out how to make ...
8
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1answer
827 views

Around-Corners Transparency in Cycles?

Using Ray Length I can make the center of a cube hollow. But what I actually want is the inverse - for the outline to be transparent and the inside solid. At a glance it seems this would be a matter ...
7
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0answers
1k views

Does a model exporter embedding materials as GLSL scripts exist?

as described in Blender Shader in OpenGL/GLSL, it is possible to export the (unoptimized) GLSL code generated by Blender for a given material. Since the viewport can use such GLSL for real-time ...
4
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1answer
174 views

How can I add banded lines to the end of cinnamon sticks(or sheets of wood)?

I would like to make a realistic cinnamon stick and its shader. My approach is as much procedural as possible, but easier options are ok too. Here is my first render: And a reference image: (3)I ...
0
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1answer
334 views

Cycles - Adding an object with emission shader makes part of my scene darker?

When I turn an object (with an emission shader) in my scene on it makes part of the scene actually go darker. The light in question is on the outside of a vehicle (which has lights on the inside of ...