Shader Forge - A visual, node-based shader editor

i have something i need to know - how do i mix two textures with different uv maps to the same shader? one is spherical and one is shrinkwrap... do i store the two uv sets in the mesh or what?

 

that's what i'm asking - those choices from the drop down are from the mesh?

 

and if they are, why are there four in the dropdown? if i import most mesh types, unity preserves only two. how do i edit these maps? e.g. how do i convert a shrinkwrap uv map to a uvcoord red-green map?

 

UV is from the mesh. Unity5 increased the number of accessible UV maps by 2. Not sure how you create those extra 2 maps, but I'd be surprised if you really needed them. You shouldn't need to convert UV maps. The red/green is simply XY of the UV map going from 0,0 (0 red, 0 green) to 1,1 (full red, full green). Hope that helps.

 

Here's a node tree for tiling inside UV atlases (handy for terrain, for a bunch of NPR effects, etc). Posting it here in case anybody finds it useful:



It's pretty straightforward:
1. scale your UV's for tiling
2. take the frac of that
3. scale the results down by your atlas size (since I've got 4 tiles in my atlas, it's .5)
4. offset with a vector 2 into your atlas. (0, 0.5) pushes up to the top left tile).

I'm sure that there are tricks to mitigate seams and mip artifacts, but I haven't figured them out yet...

 

Here's a technique I've been using for shaders that use time to animate stuff - rather than using the (fairly expensive) Sin function or the uglier triangle and sawtooth waves you get from Frac, I've been baking my time function into a texture and offsetting it to get a value:



You can bake in whatever function you want - I've been using it for easing in and easing out, for noisier waves, for waves that change frequency, etc.
To get extra fancy, you can vary them along V and incrementally pan upward, basically reading it like a raster pattern.

 

Hello. I was wondering if someone help and tell me how to make a Flip Book shader with shaderforge? Thanks in advance.

 

Recently hack together a few chromakey shaders for my current project and want to share the most usefull one with community in case someone needed it )

 

Hi all!

I was wondering, anyone knows if forward rendering + HDR isn't working anymore in Unity5? I have been trying to do a simple glow effect but it only works in deferred rendering + HDR

Cheers

 

Hey guys... I have a couple questions... I'll try to break them down as specifically as possible.

1. We are using Candela SSRR, and we've got it working great with Shader Forge built PBR shaders. However, I am having trouble developing a water shader. We have most of our environment assets rendering in deferred. As such, we have to use screen color to create refractions. For the most part, this works great, except that it seems that plugging screen color into the either the albedo or emissive blows out the reflection rendering from Candela.

I don't expect Candela support here, but I was hoping someone might be able to ELI5 as to any caveats I should know about using screen color and how it may effect SSRR so that I can try to engineer shaders around that.

We currently either get nice watery perturbed reflections -OR- nice watery perturbed refractions. But not both. I also lose any sense of specularity when I use screen color.

2. Has anybody made any water shaders in Shader Forge they would like to share the graph for? I am designing an indoor fountain. I'd like to compare my approach to others.

3. What's the best way to blend normal maps. I've been referencing a UDK guide on water shaders, and they do a lot of multiplying of different normal maps... which seems to really dull the results. I haven't been able to come up with a better solution yet. Any ideas?

Using this:
( http://www.hourences.com/ue3-water-indoors/ )

 

Hi, I'm making a 2D game and following this tutorial https://shaderforge.userecho.com/topic/449725-how-to-create-a-sprites-default-shader/ to build a sprite-default, but there's a black outline, how to cut them off? Thanks


Nodes

 

You still need to connect your alpha to the opacity output--you can find the node tree in the thread you posted (I can't link it, sadly).

 

Solved lol. What a shame. Thank you

 

There are a few nice water shaders in this thread if you dig deeper. For example my ue4 ocean shader port http://forum.unity3d.com/threads/sh...sed-shader-editor.222049/page-65#post-2018520

 

Forget about results for chromakey, so here screenshot and package with material
https://mega.nz/#!F1Al3STb!X7MB2ou3m8AGsKqlqIwGTl3vOZ_bjcFUpBQ12Dgp7P4

 

Same here, SF is great for quick hack some shader, but begin show many limits to me as i advance deep to render pipe from day to day. Im currently developing designer tool (in my spare time so not so fast) for all type of shaders (compute, multipass, geometric, render chains etc.) and soon will open wip thread.

 

Anyone worked with Triplanar here before? I have read the documentation and example found here:
http://acegikmo.com/shaderforge/wiki/index.php?title=Triplanar_Mapping

But it doesn't seem to work very well.
I am looking for a way to apply a wood texture to a desk without UV unwrapping it (VERY complex geometry) as it would take a long time to do.

Does anyone know how to use the PBR setting with a triplanar shader (with diffuse and normal)?

 

I'm trying to create the standard Unity Skybox Cubemap shader in SF but can't figure it out. Could anyone possible help me out?

I first tried creating nodes to replicate it, but got stuck figuring out the float2x2 in RotateAroundYInDegrees. Then I tried just copying the whole RotateAroundYInDegrees method into a code node, but can't figure out where to get v.vertex from, or how to use the output.

(You may have gathered, shaders are not in my skillset ;-) )

Code (CSharp):

1. Shader "Skybox/Cubemap" {
2. Properties {
3.     _Tint ("Tint Color", Color) = (.5, .5, .5, .5)
4.     [Gamma] _Exposure ("Exposure", Range(0, 8)) = 1.0
5.     _Rotation ("Rotation", Range(0, 360)) = 0
6.     [NoScaleOffset] _Tex ("Cubemap   (HDR)", Cube) = "grey" {}
7. }
8.  
9. SubShader {
10.     Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
11.     Cull Off ZWrite Off
12.  
13.     Pass {
14.        
15.         CGPROGRAM
16.         #pragma vertex vert
17.         #pragma fragment frag
18.  
19.         #include "UnityCG.cginc"
20.  
21.         samplerCUBE _Tex;
22.         half4 _Tex_HDR;
23.         half4 _Tint;
24.         half _Exposure;
25.         float _Rotation;
26.  
27.         float4 RotateAroundYInDegrees (float4 vertex, float degrees)
28.         {
29.             float alpha = degrees * UNITY_PI / 180.0;
30.             float sina, cosa;
31.             sincos(alpha, sina, cosa);
32.             float2x2 m = float2x2(cosa, -sina, sina, cosa);
33.             return float4(mul(m, vertex.xz), vertex.yw).xzyw;
34.         }
35.        
36.         struct appdata_t {
37.             float4 vertex : POSITION;
38.         };
39.  
40.         struct v2f {
41.             float4 vertex : SV_POSITION;
42.             float3 texcoord : TEXCOORD0;
43.         };
44.  
45.         v2f vert (appdata_t v)
46.         {
47.             v2f o;
48.             o.vertex = mul(UNITY_MATRIX_MVP, RotateAroundYInDegrees(v.vertex, _Rotation));
49.             o.texcoord = v.vertex;
50.             return o;
51.         }
52.  
53.         fixed4 frag (v2f i) : SV_Target
54.         {
55.             half4 tex = texCUBE (_Tex, i.texcoord);
56.             half3 c = DecodeHDR (tex, _Tex_HDR);
57.             c = c * _Tint.rgb * unity_ColorSpaceDouble;
58.             c *= _Exposure;
59.             return half4(c, 1);
60.         }
61.         ENDCG
62.     }
63. }    
64.  
65.  
66. Fallback Off
67.  
68. }
69.  

 

@RogueCode
I'd say the code above does not translate very well into a SF shader since there is no user controlled separation of vertex, fragment or geometry shaders available in SF. It tries to figure out what you want when you connect certain Inputs to the main node and automatically builds appropriate vertex and fragment functions.
You could try to push some of the code above into the automatically built vertex function by mimicing the RotateAroundYInDegrees code and letting it flow into the vertex offset Input of the main node. But since you don't want it to be an offset to the original skybox vertex you Need to switch the SF shader to absolute mode when dealing with vertex modifications (somewhere on the Panel beneath the shader preview).

 

I'd use Alpha clipping with dithering in this case, to avoid the sorting issues

 

Yeah it's CPU based, which is terrible. I should look into making them on the GPU instead

 

You can specify if you want roughness or gloss (Inverted roughness) in the lighting settings

 

Apologies for my lack of response lately, I've been all wrapped up in projects. We're still a tiny company of two at Neat Corp, currently running 5 projects at once, having just finished the sixth one last week!
I'm going to have to find a good way to schedule the time for SF and the other projects, especially when one of the other projects is so exciting I want to work on it all the time!

Today I'll work on SF anyhow, possibly releasing 1.18 as well, here are some of the coming features:
• Added node: HSV to RGB
• Added node: RGB to HSV
• Color fields can now be tagged as HDR, making the inspector use a HDR color picker instead

I'll also squeeze in a node for getting a part / sub UVs of an atlased texture
I may have time to add support for stenciling and Unity GUI shaders as well, but we'll see!

Also, a big thanks to all of you who are helping others in this thread! I couldn't keep up with it all on my own!

 

@Acegikmo - did you ever decide one way or the other if you were going to open up the api for custom nodes, or even a partial amount of the source to let us help with SF development? I know you've somewhat addressed it before, but I was wondering if anything had been decided (or if I missed/forgot anything you said about it).

 

I'm currently leaning towards making it open-source for select developers. The "API" for custom nodes is quite bad, so it can't really be made public to just about everyone, since it will cause more issues than it will solve.

 

Hi, I'm trying to make a sprite looks like build-in Sprites/Diffuse. But there's only 1 light can affect the sprite at the same time. How to fix that? Please help, thanks
Node:


Result:

 

There shouldn't be issues with PBR and triplanar... What are you seeing that's wrong?

I think this could look great for a really stylized approach, but in other cases I think it would look strange if the fur only exists on the edge of the mesh instead of fading into it. But for a painted/inked look, it would be awesome.

In your project's Quality Settings, is your PixelLightCount set to higher that 1? I couldn't reproduce what you're showing.

 

Indeed! I forget that unity is using currently select quality level as editor quality, oops Thank you!

 

Hi there,

Just wondering if anyone could help me out, I'm getting a Shader Unsupported: error on iOS9 with this super simple shader. Works on iOS8 devices so it could just be a beta thing, but if anyone knows a way to get it working it'd be great.




Thanks,
Pete

 

Strange - what errors are you getting?

 

WARNING: Shader Unsupported: 'Shader Forge/SolidColourFade' - All passes removed

 

Hey thanks for the quick response!,
It's been that way since I switched over to the iOS9 beta.
I'm using Shader Forge 1.16, Forward rendering, Unity 5.1 and building through Xcode 6 or 7 (same result).
I uploaded the shader incase you have a chance to look at it.
Thanks
Pete

 

Looks like you're excluding renderers that you may need. Add gles3 and metal under the shader settings

 

Awesome! That looks like it, thanks

 

I'm having a strange issue where certain faces are black whenever the Normal input is used.

Issue:
https://gyazo.com/6964ab81d8cca423deaf28c28f6f815d

The standard shader has no issues, but my wip shader does only if I connect something to the normal input. Out of curiosity, I restarted Unity and tried using one of the shader examples. Any example shader that uses the normal input has the same issue.

Aside from this, thank you for this fantastic asset, I love Shader Forge!

 

Shader Forge 1.18 is now out!



• Added node: HSV to RGB
• Added node: RGB to HSV
• Added node: Inverse Lerp
• Added node: UV Tile - useful for getting sub-UVs for spritesheets/tilemaps)
• Added node: Face Sign
• You can now use the stencil buffer
• You can now select ArcTan2 range: [-Pi to Pi], [-1 to 1], [0 to 1] and [0 to 1 Wrapped]
• You can now tag Color fields as HDR, making the inspector use a HDR color picker instead
• The shader inspector now contains all info from Unity's default shader inspector
• Double-sided shaders no longer have false-positive facing artifacts along edges
• Fixed a bug where lights weren't masked by fog
• Fixed a bug where you couldn't undo the dot product type setting

Odd! Not sure why that would happen. Does Unity's built-in shaders have the same issue, if you assign a normal map, for instance? If other shaders give the same odd behavior on the mesh, I would guess the issue is in the mesh rather than the shader

 

Unity's built-in 'Standard' shader was what I meant when I said "standard shader", so yes it works fine using the built-in shaders.

 

UV Tile seem to be cool.
Does it possible to use UV Tile to make Tiles with a part of a Atlas ?

 

I can now confirm that shader forge is becoming really something of greatest.

Now missing only the chimera of shading art......the multiple pass :-/

 

My main issue is the normal maps, they don't appear on the model or material.
I have attached the shader to this post, I think I have done it right, but I don't use any advanced node shaders very much so dont have that much experience with it.

 

I'm considering purchasing Shader Forge, but I have a question. I'm trying to implement a specific effect (http://forum.unity3d.com/threads/tr...-between-materials-depending-on-light.348446/), but in order for it to work properly I need to make blending calculations based on the total amount of lighting on a surface, rather than making the calculations per-light and then blending them together after. Does Shader Forge have a way of making calculations based on the sum of all lights together?

Alternately, does Shader Forge support doing grab passes? A few Google searches seem to imply that it does but I can't find any details on the specifics of what it can do beyond that. Could I render a lighting-only pass, grab it into a texture, and use that as a lookup map for blending textures together?

 

Quickly tested your shader. The normals show up fine for me, though there might be an issue of normal-directions on the negative axes.

 

It hasn't been possible in the past, but it might be possible now with the stencil buffer support

It does support that, yes!

 

@Acegikmo

I never had the opportunity to ask if you have a public roadmap for future implementations of SF (like those of Unity)

 

I would like to second this, if you do have one in place, I would love to take a look.
A slightly off-topic suggestion/request: Could you make more examples/tutorials for Shader Forge for doing some more advanced things that are useful in games such as particle refraction for fire particle systems?

 

Exactly, a bit more of openness on the world of SF.

 

Labyrith Studios - Did you figure out the normals issue you were having with your triplanar shader above?

H92 & Labyrith Studios - Aside from multi-pass support and more examples, what are you wanting in SF that isn't there? I've got my own list of things I'd like to see, but I'm curious as to what others are thinking.

 

Awesome! I went ahead and got Shader Forge, and I was able to setup pretty much everything I need quickly, except for how to do the grab pass itself. Could you point me to some documentation on this or post an explanation here? I can't find anything through searching.

 

http://acegikmo.com/shaderforge/nodes/?search=scenecolor