Shader Graph Preview always blank

Every time I create a new PBR Graph, I never see anything on the preview:



- I've saved the shader and re-opened.
- I've added the lightweight renderer with the Package Manager
- I've added a Lightweight Pipeline Asset to the Scriptable Render Pipeline Settings in the graphics settings.
- I see nothing in the preview, but the shader works.

Strangely enough, if I add any other graph I can see a circle. The PBR graph never work though. Anybody have any ideas what I'm doing wrong?

Unity: 2018.2.14f1 Personal (64bit)
OS: MacOS High Sierra Version 10.13.6
Graphics: Radeon Pro 450 2048 MB

 

Similar Issue hier - any fixes?

 

Console errors?

Also please report the bug with the bug report function.

 

I just checked and I get a lot of these warnings:

Code (CSharp):

1. Metal: Fragment shader missing buffer binding at index 4 (_LightIndexBuffer / PBR Master)
2. Metal: Fragment shader missing buffer binding at index 2 (_LightIndexBuffer / Sphere)
3. Metal: Fragment shader missing buffer binding at index 3 (_LightIndexBuffer / LightweightPipeline/Standard (Physically Based))

Every time I close the Shader Graph and re-open, I get 4 of the same warnings:

Code (CSharp):

1. Metal: Fragment shader missing buffer binding at index 4 (_LightIndexBuffer / PBR Master)

Just in case, you can find the project here.

I also get these images in the preview, if I resize the window, the preview goes blank.

 

Others have reported the same problem on the official thread but no one has responded with a solution to any of them.

https://forum.unity.com/threads/feedback-wanted-shader-graph.511960/page-17#post-3529538
https://forum.unity.com/threads/feedback-wanted-shader-graph.511960/page-21#post-3566262
https://forum.unity.com/threads/feedback-wanted-shader-graph.511960/page-27#post-3608170

 

Thanks for sharing Ryiah. Can't do much about it, Unity is still working on it so it's completely understandable. Can't wait to use it the Shader Graph though, seems awesome

 

I know this post is old but it is the first result in google,I still have the same problem in anything superior to the version 2018.2.18, there I can work with the HDR normally but as soon as I try to do the same in superior versions my PBR Master is completely blank, no errors and it seems to work fine, I just don't have any preview at all which make work with shaders very hard as I need to see the effect in the scene

 

I am having the same issue in version 2019.1.1f1 everything is up to date and current in regards to packages.

 

I've made 3 shaders using shader graph, and #4 is ... blank. No clue why.

 

My properties panel and preview also blank. running newest version 2019. Any clue?

 

I have the same.

 

This problem still persists...

Unity 2019.1.5f
HDRP 5.16.1
VFX Graph 5.13.0
macOS 10.13.6

 

Not a fix but could be useful, try using another type of graph. For me the preview is only broken in PBR Graphs.

 

Me too, but I need PBR's Alpha Cutout

 

Try updating unity to the earliest version, worked for me

 

Hi,
i had an empty Main Preview today, but i just selected another preview object and got it to work. I Foun out that the plane i used before was shown from the bottom side where its transparent --> Main Preview seems to be empty...

 

I believe the problem is you're using the "normal" PBR Graph, you need to go into HDRP -> Blah Graph.
I think it's for the LWRP maybe.

 

The problem came for me in LWRP when I started using a Custom Forward Renderer and then it broke. Making a new Custom Forward Renderer with default settings fixes it.
So if you are working on Shaders you need to toggle between your Pipeline renderer using your game custom forward renderer and a default one.

 

Unity, Are you kidding? Still not working!!!
Unity version 2019.1.9 ! LWRP.
Total blank properties and preview! When will be fix for this? From November previous year!
OS: MacOS High Sierra Version 10.13.6

 

This fixed it for me. I switched over to HDRP for my current project and noticed when I would use PBR Graph nothing would should up like it would with LWRP. I went to HDRP instead and chose one from there and now the Main Preview is working like it's suppose to.

So, PBR Shader for LWRP and HDRP for HDRP and everything works fine.

 

I had a same problem . the solution is using hdrp lit Graph instead of PBR which is for LWRP.

 

I fixed the issue preview being blank by creating a material in the project with the new shader graph assigned to it and reopened the shader and the preview worked

 

For some reason now, I can't get any of the preview to move... The preview are static which makes it so hard to see changes unless you save and go into your project.

 

I think this will be fixed in next build. For me time node doesn't work in the editor preview with 6.9.1.
Maybe this is connected.

 

This solved for me the problem: Edit-->Render Pipeline-->Upgrade Project Materials to Hight Definition Materials

 

hm, i can not get it to work unless i choose one of the HDRP shaders, not the PBR...

ps. i am using 2019.2.12f1 so i would have thought that it is fixed by now? maybe i am missing something..,

 

I had the same problem and fixed it by adding default textures.
using URP with the 2D Renderer.
feels like an easy thing to overlook, and maybe this fixes it for some

 

I have found a way to reproduce and work around it!

1. Collapse the little preview window (this breaks the preview)
2. group the node (somehow triggers a redraw - fixing the blank)

edit: ctrl+g, then ctrl+z is much faster, and does the same thing forcing a redraw

 

2021.2.0.b11 and the problem still persists...have tried to group and ungroup but it doesn't refresh.

 

2021.1.28f1 + URP + macOS 11.6.1
same issue even for a newly created default Lit Shader

 

Hi i'm not sure if this is the correct answer but for my case i changed the universal material to sprite lit

 

Did you try double clicking choosing a mesh / or custom mesh?

 

Same Issue with latest 2021 LTS and 2022.2 Beta. Sprite Lit shows up, but nothing else. I am trying to generate a decal shader though

 

I solved this by following the steps below:
1) Open the shadergraph that doesn't show the preview.
2) Click "Save As", select a folder and save a copy of this shader.
3) After that it will automatically open the saved shader, the preview shows a weird texture.
4) Immediately you have to change the preview mesh to another. like a cube or a sphere.
5) Now you can go back to the original shader . (you can delete the copy)

Unity: 2021.3.6f1 Personal (64bit) <DX11>
OS: Windows 10

 

Thank you, can confirm it worked on version 2021.3.22f1.

 

Upgrade to 2022.3.3f1 (LTS) issue has been resolved.

 

The issue is back on 2023 (tested 2023.1.9 and 2023.1.12), macOS M1. Using URP 2D, Sprite Lit

 

The issue could be related to the material used by the preview. Somehow mine got linked to a material in my Assets folder (a plain color material). When I updated the color in that material, the Shader Graph preview was showing that color instead of the actual shader being edited.

I deleted that material and then the preview shows nothing at all.

Tested in 2022.3.12f1 using URP 2D