Unity Volumetric Light Shader Graph LWRP

[@sean8306]

Great tut, worked like a charm thank you. My scene camera didnt have Depth Texture switched on so didnt show in game at first, thought I'd mention it in case anyone else has that issue.

[@stor314]

thank youuu!!!!!!!

[@wywarren]

On 2021.1.16f1 After switching on depth texture for URP it disappears for the game window. Scene is still rendering fine. This is on a MacBook Pro 16. At first I thought it was because I was targeting WebGL but after switching to Standalone it still happens. Not sure if it’s not supported on certain hardware or not.

[@lando6583]

followed this tutorial a year ago, and today I found a completely different use for this shader! Thank you so much again for this.

[@haxpor]

Wow! Discovered so many nodes in this single videos. As well good technique to make use from foundations, and no need to look for specific feature provided by Unity! Thanks!

[@T0xIcNigHtMarE]

100% worth the watch. very well put together n i'm glad somebodies making shader graph tutorials, there's too many possibilities with it for there not too be more videos out there. loved the tutorial.

[@boggledeggnoggler5472]

You are a badass. Thank you so much for this. I've been using HDRP in my VR project and recently decided I should switch to URP. But I didn't want to have ditch my beautiful volumetric light in my level. Now I don't have to!

[@Bannock88]

Very informative, and I enjoyed the dry humor. Thanks for sharing!

[@MrTriPie]

Thank you!

[@racrity]

This was simply awesome. Thank you so much man!

[@danialzamary7044]

That was great! I kinda had this problem making fog in lwrp with the camera set on forward, this really helped.

[@MrTriPie]

Thanks! Glad it helped

[@pacusz]

Cool, this is a great resource to learn! Keep up the good work.

[@CaptainCling]

Great video. I cannot wait to try it out.

[@adailsoncarlos3122]

Man, your channel is awesome! Im learning so much, thank you! keep the videos!

[@zhaoxuefei3829]

very creative man, I love it so much

[@CatOnDeWall]

protect this man at all costs.

[@AtmosMr]

Wow. Great stuff. New to volumetric shaders but great to see you work though it. I'll check out your channel.

[@lando6583]

excellent tutorial. very concise and well thought out!

[@drewmileham202]

Really awesome that you left download files :) Thanks for this tutorial!

[@MrTriPie]

You're welcome, glad you liked it!

[@zig8925]

You could also fix the low poly look, by choosing "Shade smooth" in blender, before exporting the mesh

[@arsizhifenerprozhod]

I exported the smoothed mesh, still having hard edges, maybe the smothness is ignored when rendering transparent emission?

[@zig8925]

@@arsizhifenerprozhod You might have forgotten to auto smooth, which makes every angle below a certain threshhold smooth. It's also worth noting that when you shade something smooth, the otuline of the object will not change, only the way thil filling looks if you think of it as 2d

[@lukdev]

dude, what gem this tutorial. TNKSSSS!!!

[@gameexplorer4963]

Simple and nice. Keep up the great work!

[@talismanskulls2857]

Or a simple way is turn the material shader setting to mobile/particles/additive. Then all you do is create the texture in something like Photoshop and create a variety of color tones as gradient and then set them as sprites. That way the mesh ceases to receive shadows.

[@DiegoMaisy]

People who domain nodes are ET. Good tutorial!

[@aidennymes6335]

exactly what i was looking for ! thanks a lot

[@PascalAchermann]

Thank you very much for sharing! Would love to see more LWRP and shader Tutorials :)

[@MrTriPie]

Thank you! I'm not sure there will be much more on Unity. I was thinking about switching back to it from unreal since they're adding the new render pipelines and I find C# to be quicker to work with than blueprint/c++, but I just don't feel as comfortable about using it on a longer project as I do unreal.

[@PascalAchermann]

@@MrTriPie alright, well it's always a big step to switch the tool. i anyway follow you and i see if something turns up :)

[@gabdar22]

This is a great tutorial, though I think for future ones I'd love to hear explanations as to why you're using what node. I'm trying to figure out how to reverse the fade and can't for the life of me figure out how, and I think understanding what each node is for would be super useful

[@MrTriPie]

Thank you! I'll try to explain things better next time. For reversing things, doing a 1 - whatever you're trying to reverse usually does the trick (for example, white is 1, so 1-1=0 black, and vice versa)

[@gabdar22]

@@MrTriPie Thanks for the reply!

[@balasubramanimudaliar1336]

Thanks for great explanation.

[@ksam2000]

nice execution

[@MrTriPie]

Thanks!

[@StratoChigo]

10/10 tutorial, thanks

[@hitman17011986]

This was awesome

[@Lupain]

Holy shit I never really worked on shaders before, this seems so be so complicated and confusing for me>_> Your tutorial is nonetheless very great and it helps me alot, thank you!

[@joshpolman201]

Thanks man, great tutorial.

[@V0LAT1LE_]

Awesome video

[@Auraregent]

Great tutorial thank you !

[@VinsentVH]

That's so good, subscribed :) Thanks alot!

[@MrTriPie]

Thanks :)

[@TheExoticCerdos]

Very nice! Well done!

[@mszczesnik]

Very nice tutorial.

[@MrTriPie]

Thank you!

[@BitwiseMobile]

I need a mesh like this for a frustrum collider I'm using on security cameras in my scene.

[@werti4894]

great tutorial!

[@GameShorts484]

thank you so much

[@DimensionX985]

Thanks . I benefited a lot from you. Keep it up ❤️🤍💙

[@vieirapereira1298]

awesome!!

[@hrishikeshkumar2264]

great video thanks

[@MrTriPie]

Thank you!

[@mohamedhamdy6722]

good work . but the question is . why we modeling the cone in blender if were model it in Maya (pro builder)?

[@MrTriPie]

Thank you! Simply, it's the modeling program I'm most used to, and I have blender videos on my channel already. It's as simple as models get, so it should be easy to convert to your favorite program, and if someone isn't already used to any modeling program, it's free.

[@farianderson168]

is there any trick to make this cast volumetric shadows? :D for example when an object crosses under the light we shouldn't see any volumetric lights after it.

[@vincentdemers6066]

Following this and for some reason when the material is over the sky depending on the angle its white only in the area that overlays the sky. If its over another mesh its fine.

[@EpicGamer63637]

Simple and excellent :)

[@oliverweiss7175]

Thank you for sharing! It helps a lot. I am having difficulties to understand the logic behind the Scene Depth, Camera Far Plane and Screen Position calculation. Can you explain a little bit further what is happening here? Thank you!

[@NikhilJolly]

Amazing tutorial! Would have really loved an explanation on the nodes you used. Btw, I am facing a problem where if I use an "Unlit - Transparent" type shader behind this lovely volumetric light, it doesn't render over it (the overlapping part clips entirely). Any idea why?

[@MrTriPie]

Its likely an issue with sorting the order to render the objects (multiple transparent objects tend to have this issue). I'm not really sure if there is a great solution for this, one thing that might improved be to force it to always render it on top (maybe by putting it in a different layer and setting up the cameras to render that layer on top (I think you need 2 cameras, 1 rendering all other layers, and the other only your volumetric one). But that isn't a perfect solution. Avoiding transparent objects when possible helps.

[@soma78]

excellent ! thank you

[@wen-hanku1776]

very helpful!! thanks!

[@MrTriPie]

Thank you!

[@flyingroads3498]

Hello please do this titorial for new unity. It is diferent here. 2.8

[@dansv9778]

It shows purple on my URP project

[@KillerGameDev]

Ive went through this tutotial so many times...I can seem to get past the part where we need to blur the edges. I get some weird functionality at that point. When your mesh is white, mine is black. Tweaking the opacity ofcourse only makes it transparent. I figured maybe it was a setting, but when I get to 8:30 in the video, my light is just invisible regardless of my settings. I tried following the same steps in amplify shader and im getting the same result. Am I missing something?? im using 2019.4.17f1 and urp

[@freetimedevelopment]

Same to me, I currently try to figure out what happens...

[@bugge1947]

I've got a problem where the Fresnel effect fades from the view height and up instead of the edges? I've even downloaded your shader and I've still got the same problem.

[@AU-cs6er]

Have you tried using this approach using universal render pipeline? I followed your instructions, but unfortunately, it's not rendering the shader at all. I'm developing a VR scene using 2019.3.0b6.

[@MrTriPie]

I haven't tried it. I've been using Unreal for a while now, when Unity had the LWRP taken out of preview I tried it a bit to see if I wanted to switch and made this video. My opinion of it at the time was that it should have been in preview still, I had multiple times in the course of a few days playing with it where the shader editor wasn't working properly (I think one of the problems was it sometimes wouldn't open certain shaders until I restarted Unity). There were also things that didnt seem to work the way I expected it too and I couldn't figure out, not sure if they weren't working correctly or I just couldn't find any documentation that would explain them to me yet. Anyway, between those problems, changes that users would want, and maybe changes that had to do with the HDRP, I wouldn't be surprised if the URP has changed a lot and broken some stuff. If you figure out what parts seem to break the shader, maybe we could figure out how to fix it.

[@sixdegreesofcrispybacon]

I managed to get some results here under URP today (Unity 2019.3) by setting AlphaClipThreshold in the Unlit Master node to zero. Also, had to go check in the Inspector for Project > Settings > Universal RP - High Quality that Depth Texture was set (it wasn't)

[@petermartin9394]

@@sixdegreesofcrispybacon Thanks, fixed my problem.

[@sixdegreesofcrispybacon]

@@petermartin9394 I'm glad I decided to post then. Nice one. (Y) Now, make sure you show us what you get up to, eh? ;-)

[@haxpor]

@@sixdegreesofcrispybacon Thanks six! By the way, new user like me or others might be confused as it is at Inspect panel window after locating and clicking on the project's UniversalRenderPipelineAsset file, click on it then toggle on Generate->Depth Texture. Thanks btw.

[@easygamestudio2826]

Will game objects illuminated by this light generate shadows?

[@MrTriPie]

Assuming you have a spot light in the same position, regular cast shadows, yes. But unlike more complex volumetric effects, there won't be a volumetric shadow (the light you can see in the air won't be blocked). So this effect should be placed carefully to make sure that kind of issue isn't too noticable.

[@hereticstanlyhalo6916]

Wouldn't the effect break if a player walks through it because it's a mesh? Edit*: Lol, just realized he made it disapear as you get closer, but still, wouldn't that break the illusion of being volumetric if it just fades away?

[@MrTriPie]

I don't think the player is likely to be paying enough attention to it to notice, and lots of games have things such as fake volumeric Godrays, fog clouds and other particles fade out when approaching them so they don't clip with the camera. Some games even have more solid things do it to get out of the way the camera, such as the Witcher 3 fading out trees and bushes. So the player is likely to be used to the effct too. In the end it's better than nothing when you can't use a full volumeric effect, and you can always tweak instances to make sure they aren't bothering players.

[@caio3726]

Can you recreate this in the Amplify Shader? I've tried following a long about 5 times, but it never looks like yours.

[@sureztv5836]

Can you replicate this sin Amplify Shader Editor

[@ajef6119]

hey, I'm using your graph in a project, an while it works great in most cases, when there is objects with a material set to transparent that are being rendered inside or in the frame of the cone of light they look really weird. Is there a way to fix this ?

[@danlee7923]

My unity doesn't have unlit graph, where can I find it? I have 2018.4.19 LTS

[@MrTriPie]

Do you have universal render pipeline installed (used to be LWRP)? docs.unity3d.com/Packages/com.unity.render-pipelines.universal@7.1/manual/InstallURPIntoAProject.html#installing-urp

[@danlee7923]

@@MrTriPie it says, URP only works in 2019. My package manager doesn't have it. I don't want to upgrade to 2019 because the camera panning is terrible, I mean 100 mile pan terrible. This is the reason I am currently using 2018, but my current project doesn't have a rendering pipeline and I can't find one.

[@MrTriPie]

I think you could probably find the old beta versions of the LWRP, but it may have some issues. If you want to stick to 2018 and the standard pipeline I don't know very much about writing shaders in text code. One option might be to get Amplify Shader Editor add-on as it has support for the standard pipeline, luckily it's on sale now: assetstore.unity.com/packages/tools/visual-scripting/amplify-shader-editor-68570

[@NeviiumD]

Thanks ;;

[@chalogonzalez4468]

Will this work on a sphere? I need this shader for torches.

[@MrTriPie]

If you removed the gradient going from top to bottom it should. Although it sounds like something might have changed since there's comments saying they had trouble getting it to work in newer versions

[@NexusCool1]

would this work with hdrp

[@MrTriPie]

Probably, but I believe HDRP would support volumetric lighting/fog, which should give better results

[@levasfilm]

How come I See nothing when I run Unity...Do I need more Light in the Scene ??

[@MrTriPie]

Maybe. One guy was saying this doesn't seem to work in the newest version, so if he did it right, that may be it

[@rave9665]

I may have a solution, my problem was I could see it fine in the scene view, but not in play/build. Hope this helps: Looking at the nodes FresnelEffect>Clamp>Lerp, the Lerp(output) goes into a multiply node on input B. the output of this multiply goes into another multiply node, also on Input B. Again, the output goes into another multiply node on Input B. The full path im looking at goes FresnelEffect>Clamp>Lerp>Multi>Multi>Multi I took the Lerp output, skipped the first 2 multiply nodes, and put it straight into the 3rd multiply node's input B. That's it (Save asset) I don't know exactly how scene depth works, but I reckon this was the problem in my use of the shader. This was left out by skipping the first multiply. I also skipped the second multiply becuase my camera would never reach the shader to clip it, if you still wanted this effect then only skip the first multiply. My version of Unity is 2019.2.17f1

[@FelipeGomesRocket]

The part with the texture, instead put a texture itself, why not make it procedural?

[@MrTriPie]

In Unreal engine the procedure noise is usually more performance expensive than using a texture, I'm assuming it's the same case in Unity, but it might not be.

[@earlygamer3590]

The question is how does this perform in mobile devices?

[@MrTriPie]

Not sure, I would assume that higher end devices would do fine with it, but lower end ones might struggle with it, perhaps they could run a simplified version of it?

[@Lukas_CG]

Based on your accent, I think you're from Ohio

[@MrTriPie]

Haha, nope!

[@Lukas_CG]

MrTriPie dammit!

[@KENISEG]

its URP or what?

[@MrTriPie]

The Universal Render Pipeline used to be called the Lightweight Render Pipeline, so hopefully this video is still compatible

[@muhammadikram8009]

can we use this in mobile devices?

[@MrTriPie]

I believe you should be able to,

[@muhammadikram8009]

I will try then tell you. By the way forgot to tell you that this was a great tutorial

[@ginner9635]

@@MrTriPie yes you can:) its been two years already since the video released, but i hope you will see this and help me if you can! I'm stuck on trying to "cut off" the mesh of volumetric light, that intersects with other mesh. I am using a dynamic light source (flashlight) and when i point it at some objects, it obviously goes through them and player can see that other part of the lightbeam. Is it possible to fade it after intersection?

[@MrTriPie]

@@ginner9635 I can't believe its already been 2 years. I don't think there would be any way to do this only using shaders, you could try doing something like this: Create a LOW resolution texture for the light cone, and every frame or two do several raycasts from the start of the cone to the ends along the sides to regenerate the texture. It may be a bit expensive on mobile, so you'd have to tweak it a bit. I'm also not sure if it would end up looking strange in a different way as its not a true volumetric, but this is only way I can think of to attempt this.

[@ginner9635]

@@MrTriPie wow man, i didn't even hope you'll answer! Thank you very much! yeah, you're right - it is too expensive on mobiles:-/ I thought maybe there was a way to do it through the shader graph:(

[@bumate90]

Damn, it is really not that simple.

[@jamqdlaty]

Why doesn't it have "fake" in the title?

[@hneo13]

Amazing tutorial, thanks for sharing

[@jackwolf7479]

very helpful THANK YOU!!

[@MrTriPie]

Glad it helped!

[@mandyma1229]

Thankyou sooo much