Feedback Wanted: Shader Graph

Thank you very much, im going to try that out when im back home!

 

Hi,
I want to extend the Shader Graph for my Custom SRP.
Can anyone help on that.

 

Holy heck it worked! Thanks for pointing me in the right direction

 

Hey there,

Will Stencil buffers be added to the Lightweight pipeline any time soon?

I'd like to convert my project over to using LWRP but it depends heavily on the stencil buffer.

If it won't be added any time soon, are there any hacks/workarounds I could use to add it in?

Thanks

 

Hi,
How to extend the Shader Graph system to export shaders for any custom SRP .
Do I need to write a something similar to LightWeightPBRSubShader or LightWeightUnlitSubShader
Any help on this would be appreciated.

 

Hello，Which node of shader forge is Normal Direction in shader graph?

 

Hi - just wondering how you would make this shader with the Shader Graph but with a soft edge (Fresnel)..I can do the soft edge but I'm unsure where to go next.

http://wiki.unity3d.com/index.php/DepthMask

 

What are the current plans for supporting shader_feature/multi_compile?

 

OK, so shell furshader question 2 here. How would you go about correcting the normals on the strands? My thought was to use tangent vector, and feed that into the Rotate About Axis node and rotate it around the normal vector towards the viewpoint. But how would I get the correct angle for that?

 

Hi there.

I'm having trouble importing and using Shader Graph 3.0.0-preview via the package manager in an existing project.
I have upgraded the project to 2018.2.8f1, installed render pipeline core via package manager, and imported and set up LWRP via the package manager also.

When I open a graph I get the following error:

Compilation error in graph at line 466 (on glcore):
failed to open source file: 'ShaderGraphLibrary/Functions.hlsl'
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)​

I the Functions.hlsl exists in the Shader Graph package, in the correct ShaderGraphLibrary folder, but for some reason the generated shaders do not have access to that path.

I have temporarily fixed this by copying the Functions.hlsl file into the CoreRP/ShaderLibrary/ folder (and creating a meta file for it). Other includes that reference files in CoreRP/ShaderLibrary (Color.hlsl for instance) are included correctly.
I then searched through the RP+SG packages, replacing any mention of 'ShaderGraphLibrary/Functions.hlsl' with 'CoreRP/ShaderLibrary/Functions.hlsl'. Shaders now compile correctly, but obviously this isn't an ideal fix.

Testing the render pipeline + shader graph with a fresh project works correctly (though I had to turn off Metal editor support in order to view the shader preview correctly).

Something else of note, when running "Edit/Render Pipeline/Generate Shader Includes", the script apparently didn't have write access to "Packages/com.unity.render-pipelines.core/CoreRP/Utilities/GeometryUtils.cs.hlsl", I had to go in an chmod +w it.

I am on OSX 10.13.6 btw.

Any ideas what could be up with the missing Functions.hlsl? It's really hard to tell what's going on in the background as all the package files are kept in /Users/eddy/Library/Unity/cache/packages/packages.unity.com/, but yet Unity is probably caching these somewhere for the project, or at least re-writing the paths so to speak so that the project has access to the files.

Quick update: Having copied out the shader and pasted it into a fresh file, this too is unable to compile due to Functions.hlsl, ShaderVariables.hlsl and ShaderVariablesFunctions.hlsl being unable to be referenced. This has been hacked by copying these to the CoreRP shader directory and then editing GraphUtils.cs to output the new directory for each file.

 

For everyone who suffering with Shader Graph + .NET 4.x Equivalent - the problem is finally get it root cause.
Thank to the guys who post this - https://www.patreon.com/posts/20285845

In short - you cannot use floating values (including colors) in shader graph properties. After replacing all of them and place those values in material I finally able to switch my project to .NET 4.x

The cause of the problem seems to be locales https://www.patreon.com/posts/unity-bug-dot-to-20433384

 

Would be great to see tessellation and sss controls added

 

SSS is coming in the next update with the Lit Master Node, not sure about tessellation (also this is for HDRP)

 

Ok, thanks! I didn't see that in the changelog or readme's. I would have thought the package manager would not list any versions incompatible with the version of unity running?

I am still getting the "failed to open source file: 'ShaderGraphLibrary/Functions.hlsl'" issue after having removed RP's and SG and then reinstalled the 2.0.8 versions.

 

So I have finally gotten around to trying Shader Graph but hit a snag right out of the gate. I installed the LWRP and ShaderGraph and then created a PBRGraph, but when I opened the graph window, I noticed that the thumbnails were not showing. Has anyone run into this? I'm using Unity 2018.2.3f1 on MacOS 10.13.6.

 

Did you switch the rendering Pipeline to LWRP?

 

If you mean in Graphics Settings, yes.



The shader renders an object in the scene ok, but always the default gray, regardless of settings in the shader graph.

 

Thats weird, it might be a bug. Which version of LWRP/Shader Graph are you using? 3.0.0 sometimes give problems on some people's machine since it's intended for 2018.3 but got slipped into 2018.2 package release.

 

Thanks, @Grimreaper358 - I was using 3.0.0. I tried going to 2.0.8, but still no luck.

 

No problem. Hopefully, a dev will be able to help you out.

 

Hi, is there an way to determine in which version it will be fixed? I still observe bug in the latest released one.

 

Hi and thank you for the new "toy"
Is it possible to convert the 3D Unity KIT Shaders so that I can see, change, manipulate them with the visual editor ?

 

Hi Guys, isn't still GPU instancing avaliable in the shader graph?. Thx.

 

if you use Shader Graph for HDRP, they just added HD Lit Master Node on SRP master which exposes most of the regular HD Lit functionality, including option for GPU instancing.

 

Forgive me if it's been stated, I tried to search this thread but came up empty. How would I write a shader for UI Images? I copied my sprite diffuse shader which used_MainTex referencing but that doesn't seem to help. Absolutely amazing feature though!

Edit: on further inspection it seems almost all of what I wanted to use graphs for are not possible, that being sprite distortion, image manipulation (to make up for not having particles in UI overlay space) and heat/fire distortion. Hope these will be added one day as it's very easy to use, just seems to be lacking in features.

 

How can I rename the existing shader graph to place shader in catergory? Double clicking as suggested before seems to not working or I don't understand where I should click.

 

Thanks for the suggestion, @wyatttt. That did the trick!!!!

 

Oh, I see it now. Thanks.

 

@wyatttt Can you please point me to an answer of this question ? 3D KIT I reffer to this one: https://unity3d.com/learn/tutorials/s/3d-game-kit

 

Is there any way to create a simple color gradient ramp? The gradient node doesn't seem to work for that.
Thanks,
Jeff

 

Are there any plans to add a gradient property, so that they can be set on a per-material basis?

 

@jeffsarge & @Fellshadow
Here's the solution I came up with for gradients.
Only 2 colors, but it works great, with transparency and rotation included!

The "Gradient" texture can be any linear, horizontal, black & white gradient. This way you can have one color in the middle and the other at both ends if you want (Use a 256x256px sized image if possible).

The part that builds the gradient is to the left of the Add node with the gradient in the preview.
All the stuff to the right of that is managing transparency and "blending" it with a texture (this texture's alpha acts as a mask in this case, and the RGB is multiplied).

Lots of the first section is there for the rotation bit, if you don't need it and want a basic linear gradient, you probably can just use the R(horizontal) or G(vertical) channels of the UV to get a basic linear gradient.


NOTE: Though the ShaderGraph doesn't work with stencils - yet, I hope - I tried using it with a "Sliced" UI image, and the gradient will scale with the slice (in my case, rapid change at the sides, almost none in the middle). You'll have to use actual masking if you want to avoid that bit.

NOTE2: You could probably play around with the RGBA channels of the gradient texture to get more than 2 colors in. It might require a bit of messing around in order to create the actual image, but it should work.

 

@Grimreaper358 and @wyatttt - thanks for helping me get started with Shader Graph. I am excited to see how procedural Shader generation can be better integrated with mesh generation in Archimatix.



For example, a grid of windows on a building could be generated in Shader Graph and/or as physical holes in the building mesh with Archimatix. If they share data, then there could be an LOD transition or at least a global parameter that is shared by both systems.

At the moment, I am trying to see if Shader Graph can set up a vertex color blending of textures. Archimatix can procedurally set vertex colors based on architectural logic, so it would be great to have a Shader that can blend the textures in an architectural mode.

The following image shows a test I did a ways back where the top vertices of the building are one color and the bottom another, with the vertices going up the height of the buildings are blending linearly or otherwise.



Is there a way for Shader Graph to handle the vertex colors to blend textures?

 

Hi
Has anyone tried or has been able to use webcam input as part of a shader in a Shadergraph?

I'm trying to create fake reflections from webcam input on a glass sphere.

I know how to simply use webcam to play on a texture
https://answers.unity.com/questions/909967/getting-a-web-cam-to-play-on-ui-texture-image.html

but want to use webcam input as part of a custom cubemap reflection shader in Shadergraph.

 

No problem, glad everything is good for you now. To work with vertex colors in shader graph you can use the Vertex color node, split, and lerp. The lerp (B) would be connected to the different texture inputs you wanna use and (A) for the main texture.

 

Fantastic - thanks, @Grimreaper358!

 

Hey there, been enjoying the new shader graph system. Are there any plans for custom lighting functions or how would you go about creating these in conjunction with the shader graph?

I've been trying to create a toon shader among other things and the two limitations that have been holding me back are:
- No multi pass support
- No custom lighting effects

Anything I'm missing out on?

 

@EricLowry

Thanks for the response!
Unfortunately, if I'm understanding your post correctly, that solution won't really work in my case, as I wouldn't be able to adjust the "strength" or "amount" of each color in the gradient, since I'd be limited to the gradient texture.

I'm creating sort of a "watercolor painting" effect, which is generally a mixing and blending of multiple colors. Since I'm not particularily good with art, it's much easier for me to do this through procedural generation of textures, and just adjusting the colors while looking at the effects in realtime.

It gets some OK results, like this:
but it would be hard for me to do this without being able to adjust the different parameters of a gradient in realtime.

Although, thinking about it, it could work just as well by having a single "base" color, and having it procedurally choose which other colors to mix in based on math to reach a similar result... Unfortunately, without a really good understanding of color theory, this would probably be extremely difficult.

 

Just off the top of my head, you could use a somewhat similar approach to what I hinted at at the end of my post with using an image's R/G/B/A values as an equivalent of masks for 4 (or even 8 colors in some specific cases).

The basic approach would be this:
Take one channel from your "color mask" texture, which is basically a black&white gradient. With multiplication, division and power math you can manipulate the amount of black vs white in the image (basically recreating the luminosity window from photoshop).
Then you apply the logic I had on the right of my gradient shader to get more or less presence of the given color based on the black/white image you get.

Rinse an repeat 4 times for your 4 channels, blend as needed and you get a texture built with 4 programmable gradients that you can fiddle with in realtime. 8 colors if you have one color at each end of each gradient (like I did)

This is really really "rough" and non-specific, but if you play around with the idea, it could probably work ?

 

This should really look like a text-input field. -- Keep the UI somewhat consistent with the rest of Unity, please, guys?

 

Hello, is not possible to use Decal in shader graph material right?.

I don't see the toggle "Enable Decal" in the shader graph.

It will take too long to add this features?.

Regards.