Unity | I made a better Interactive Grass Shader + Tool

[@MinionsArt]

Since people are asking about multiple interactors, I will make a post on how to do that tomorrow and link it here :) It's pretty easy, just send an array of positions instead of one, but will have script links ready tomorrow.

[@batman85057]

You don't have to limit the grass to 50000, The 65,534 vert limit for meshes can be increased to 4,294,967,296 by changing the mesh indexFormat to UInt32.

[@MinionsArt]

@@batman85057 Ah, cool! I did not know that, should help people making bigger maps :)

[@TheYuira]

Thanks, You're a breathtaking!

[@hrafnkellorrirastarson7544]

OMG THANKS!

[@hamburger6434]

hi how do i fix this error : IndexOutOfRangeException: Invalid kernelIndex (0) passed, must be non-negative less than 1.

[@bigidiot5881]

This is a really incredible tool. I was between such a rock and a hard place trying to get grass into my VR game without it looking terrible or tanking performance. This has been a godsend. Thank you!

[@ape1205]

When I put it in VR the grass doesnt render in my peripheral. Did you encounter any problems similar to this and if so, how did you fix?

[@gijsbert11]

The fact that you were able to even make this is amazing, and it being so user friendly is on a whole other level. Simply mazing work.

[@Riffrefferer]

If you cant find the interactor list at 13:26 , go into the "GrassCompute" script and look around line 57, there will be a private array called "ShaderInteractor[] interactors;",add "public " in front of it. Worked for me

[@blurblur3642]

Thank you! It worked for me, too. But it seems like the interactable collider has already add into the "ShaderInteractor[]" automatically. Maybe that's why the array was set private rather than public.

[@Kmoonleaf]

Thank you for the awesome free tool 🙏 A couple points where I got stuck, for anyone who might find it helpful: 1: In order to get the terrain blending to work, I had to check and uncheck the render terrain map script after updating the material. 2: if you're going to use a custom mesh (anything other than the default unity primitives), you need to add a mesh renderer to your object, or else the brush tool won't work. 3: Unity terrain works with this, but for some reason, terrain blending does not. It won't allow me to drag the terrain into the renderer. Not a big deal for me because I just sculpted a terrain in a modeling program and imported it, but might be frustrating if you really wanted to use both unity terrain and terrain blending.

[@toms6385]

I cant seem to be able to change the mesh did you find how ?

[@kombosabinho]

I'm BLOWN away just how good this video is. You get a new subscriber 🎉

[@MrSkyerHawkins]

I absolutely loved this grass! I switched my project over to HDRP and had to quit using it since I couldn’t get it to work with it. I haven’t found any good replacement for it either that works. I’m sad every time I see you post an update to it on Patreon knowing that I wouldn’t be able to use the worlds best stylized grass and painter that some how keeps getting better and better! Keep up the great work!

[@yiweiliao653]

Thanks so much for such a GREAT tutorial. Very helpful for my way of finding the best practice

[@veronika6879]

I gasped when you started showing it reacting to light!! Looks i n c r e d i b l e

[@ludiclogic]

It looks awesome!

[@Leonardorth.]

Awesome work ! I’ve been loving the original grass tool and it’s great to see an update.

[@rambii.]

Finally. There was one issue I had with the older grass was the color would become very bright or very dark depending on the direction of the directional light. so when you have day and night cycle, it didn’t look good. And you said this is changed from geometry to compute? I’m gonna get it

[@MinionsArt]

Yeah the lighting stuff should be fixed, but you never know what might change between versions, if there's still issues, I'll hear about it !

[@Tofos94]

Wow this looks so good. Thanks for your effort and hard work to make this video and that tool. ❤

[@MadpolygonDEV]

honestly your channel is so great!

[@leothebaddesigner3727]

this is amazing thank you , i am a beginner and looking for a way to make some grass without getting to learn the entire game industry, thank you

[@cactus3467]

This is amazing! Absolutely awesome work

[@KDSBestGameDev]

This is beyond impressive!

[@PauloHSousa237]

This tool is awesome! well done

[@question_mark]

lezgooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo it looks so good, thank u so much

[@orkmaedchen]

Thats pure beauty.

[@toms6385]

Hi ! I was wondering if it was possible to use a custom mesh for the grass instead of the one generated by the script ? This would allow to blend certains elements with the ground and would be really cool

[@claironaut]

Thank you so much! I absolutely adore this tool

[@SpartanGameDev5434]

Amazing tool! Is there anyway to generate it across my entire terrain without manually painting it? Thanks this tool has saved me so much time.

[@niuage]

@MinionsArt hey, thanks for sharing that for free, it's amazing. Quick question, is there a way to save the mesh as a prefab? I tried saving the mesh with a script separately and then adding it to a mesh renderer, but it didnt work. It seemed like all i got was individual vertices or something like that, no blades. Thanks!

[@tarutso]

Same question here. TY in advance! >_

[@manuelursino4135]

You are amazing. Thank you so much for sharing.

[@nanchao4170]

I haven't finished it. but thanks genius!

[@Niter88]

That's actually very cool. I might use ir for things other than grass

[@ИмяФамилия-у9щ2п]

Thank u all is working!

[@26xBenny]

AMAZING THANK YOU SO MUCH

[@matteoburzi9016]

even if I deactivate and reactivate the script I do not see the grass

[@yaarrghmematey]

Noice work mate!

[@fredimachadonet]

Awesome! Thank you very much for your content!

[@drinkwatrr9883]

Wow this is amazing thank you so much!!!

[@MisterChiccoOfficial]

This is awesome!

[@planebreach]

This is amazing, just one issue. How can i make this work with terrain, because i am unable to add it at 12:23 like you are doing with a plane?

[@plasmaint]

If you haven't figured it out yet, simply change the type from Renderer[] to Terrain[] and edit the foreach statement at the GetBounds() function from this: foreach (Renderer renderer in renderers) { bounds.Encapsulate(renderer.bounds); } to this: foreach (Terrain renderer in renderers) { bounds.Encapsulate(renderer.terrainData.bounds); }

[@planebreach]

@@plasmaint thank you

[@planebreach]

@@plasmaint ok, a quick question "change the type from Renderer[] to Terrain[] " Do you mean the line under [SerializeField] in the RenderTerrainMap.cs ? Sorry, i am not a programmer.

[@plasmaint]

@@planebreach Yes, I meant that one.

[@planebreach]

@@plasmaint ty

[@richardhao7954]

Thanks for making this 😁

[@JaumeBitterhoff]

I cannot manage to get the material auto assigned after the grass compute script activation/deactivation step, and i was thinking that maybe there is some previous step not shown on video that's missing. Is there any package that should be installed for this tutorial to work?

[@yellyvi]

I cannot explain how much I love this ♥ after weeks of testing different kinds of grass, this is by far the best!! I have one small question though: is there a way to decrease the radius of interaction with the grass? The grass bends too widely around my character atm, making it seem the character collision is much bigger even though it's not 🤔

[@DaveJackson]

amazing, thank you so much

[@DaveJackson]

dear Minions - does this only work on Terrain or is there a way to get it to work on a mesh?

[@justusmarks7919]

Thanks for ur nice work. So helpful 🙂

[@telur_xs]

It's amazing!

[@DanielRiaz]

Anyone else having issues with the grass appearing? I see the grass count increase, but I don't see the grass actually render (even when I toggle on and off the GrassComputeScript component). I think the problem is it's not finding the source mesh. I see the checkered mesh icon appear in source the mesh field, but it's not lit. It's faded which makes me wonder whether there is something wrong. I am using BIRP and Unity 2021.2.9f1.

[@tiagoalmeida7103]

Change Material Render Queue for Transparent😀

[@luanabianco5827]

@Telmiyo right click on GrassComputeHLSL and create a material, in this material that you just created you will find this option

[@dougie119]

I had the same issue. My issue was with the shader. I deleted it and then made a new unlit shader and named is " GrassForCompute" and then I pasted the grassShaderHLSL code inside. Then I right clicked and created a material from that and it worked. if your material default name isn't Custom_Grass Compute HLSL then you did something wrong

[@JARI]

Can we use this commercially and if yes how should we credit you?

[@Ball_Zach]

The interactor tab in the grass compute script won't show :( Can anyone help?

[@otohime8516]

Thank you so much!

[@slyzrl1361]

Dang that is really good thank you! Just one question : is there any way to make it work for in a procedural way, without having to paint by hand ?

[@huynguyenphan4120]

How can I stored painted mesh into prefab?

[@AbachiriProduction]

bro you are legend F

[@__Rizzler__]

thank you

[@twinjuke]

Could you make such a grass shader that sits on top of triplanar mapping in HDRP? I'd be really interested. Nice tool btw! ❤

[@kathleenbohren3953]

Looks amazing but it doesn't work for me :,( Everything is set up and I can see the number of grass raising but it just doesn't show up even though it found the mesh when I turn on and off the grass computer script. Do you know where it could come from?

[@poctordepper4269]

Was having this issue, turns out I didn't have my URP all set up. Without that, the shaders won't be able to render, so make sure you set up your render pipeline!

[@loganjones5537]

I had the same issue even though i updated everything to urp. I tried the BIRP shader in his Patreon and that worked for me. After switching it out do the same thing. Create a material of the shader, plug it in and disable and enable the compute script (like he showed in the video). Hope this helps!

[@alpha3836]

Is there a way that I can use a custom grass mesh/texture?

[@hrafnkellorrirastarson7544]

Nice! thanks for the update! :) Do you have any idea how we could get multiple interactions working?

[@cameronwarner1630]

When using the tool, im able to paint grass and everything, however when i click the play button or build and run the game, the grass dissapears. Is there a simple fix for this im not seeing?

[@icxrusluv]

Please make an HDRP option! Would love to use this tool, it looks much more performant than the Terrain system!

[@Luka-hv7wp]

When I play my game it only renders the grass close to the editor view camera, but not the grass close to my player Do you know how I can fix this?

[@sanzaxx]

I love the tool, but i cant make it work in prefabs. Is there any solution for that?

[@tibastudio4223]

Hi !! You're pack is amazing thanks for it it's saves me a lot of time ! I just want to know if it's free for commercial usees like if i want to make a non free game with it ?

[@armutcocuk7783]

Hi, I tried using URP, and it's working great, but I want to adjust the grass lights according to the ambient light level. How can I achieve this?

[@possqueenvivvie]

Will this grass shader/painter work on imported meshes, or only terrains?

[@Aaron-pb2bf]

I am having an issue with finding the grass as it shows that it is placed, but I cant see the grass

[@gregoriocarreno]

Can someone help me, I'm a newbie in Unity, I tried to do this tutorial but I can't figure out how to activate the brush to generate the grass.

[@xiaoma9930]

It looks awesome! But how to add more interactors for this version, and I find interactors only can find objects from the hierarchy, not prefabs, so if I wanna spawn my object from prefab, it won't trigger interactors. I am looking for a way to fix it.

[@MisterChiccoOfficial]

Is there a way to get some kind of glossiness/smoothness on the grass?

[@zaurs0]

Hi minion, this is very powerfull stuff, thank you for sharing your knowledge with the community. Just one question, i want to put the grass to a random position in a procedural world. Probably mix the Procedural Object placement algorithm from sebatian lague with your grass. How can i get the Grass to put it in? Thank you anyways

[@tszchingchiang874]

For me, I cannot find the Interactor session at 13:27. There are only Affect Radius and Affect Strength in the wind session which is actually controlling the values of the interactor (Interactor and Offset are missing btw). Then I realized the capsule is automatically assigned to this script when I add the shader interactor script. With this method, I can add the Shader interactor script to multiple objects and they will all be able to interact with the grass. Thanks for the scripts anyways!

[@Zxgnjason]

Hello! This is such a great tool, I'm currently using this for my 3D Ghibli Inspired project, and it looks so good! However I noticed that the WebGL build unloads the grass whenever I try making a build. Do you know any way I can fix this? Thanks so much!

[@TC-xk5rm]

Pretty sure webgl can’t access compute shakers so it’s not compatible

[@SlopFace]

Hey i dont know if someone had the same problem as me but the fade (LOD) dont want to work it desapears and only work in the editor mode

[@harindulk]

❤️

[@MAXNS]

I have joined Patreon, but what is the actual order of the tutorials? It's a mess to follow so many links. :/

[@ronny4176]

i tried using this for my procedural world, but apparently it is not built for that. i keep getting frame drops despite having chunks. the older version was better for me ig. getting the grass spawned via script was also a ton of a struggle for me, since i do not know anything about compute shaders.

[@ElMoy]

Can you share how you did to spawn grass? I am struggling with this, for your problem, just get the part 1 of minions art grass shader and add the material of the shader into every chunk you create, the disadvantage of that is that you cant spawn more grass (at least not as far as i checked), it went pretty well for my chunks version, but now i am implementing an island version and i cant figure out how to spawn it, and as i said, i cant figure out how to spawn more grass

[@NovaTaleART]

Do you happen to have any plans to convert this tool to Godot, by any chance? As well as the Water and Snow Interactions? This looks absolutely stunning!! Keep up the amazing work!!

[@alexoffice5550]

Interactor setting on 13:26 is definitely missing when used on newer versions Unity. Even when I put "public" in front of interactor on line 57 of computescript, it is still missing "Offset, Affect Radius and Affect Strength". Appreciate it if someone can give me a solution.

[@MrWhoever]

If nothing shows up for you and it feels like it's not working - you need to RIGHT CLICK on the plane in the scene view

[@MrProtogan]

Bro you are my hero, you make someone happy thank you !!

[@Obliviander]

Did you change the interactor script from the last tutorial? Looked smoother this time, or it could be that a sphere makes it look smoother than my characters feet. Thanks for the tutorial ☺️

[@seve8138]

Hi! Amazing channel with very professional results! I was wondering what is your Triplanar shader. Looks dope and can't wrap my head about creating this myself. I subscribed in one millisecond.

[@pauldevred1393]

Hi MinionsArt, is there any way to make it work for in a procedural way, without having to paint by hand ?

[@nisos5620]

When I try to import the script in the game object, the script doesn't appear in the "add component" window... when i drag and drop the script in the GO, my unity crash instantly... Do you know what the problem is ? Thank you and sorry for my bad english ! XD

[@Kmoonleaf]

I had this problem as well, the solution for me was making sure that I titled the script exactly the same way as it appears in the pastebin title. If you mistype it or change the name, it will not work.

[@nisos5620]

@@Kmoonleafthank you so much for your answer i will try this asap and i hope it will work :')

[@LoganDJS]

I see on the example of your scene that you can enable the gpu instancing but there is no the option in the script that you give in github, is it auto gpu instancing ? I don't think so because i have a heavy loss of fps

[@5th_Vertex]

Thanks, New sub here!

[@CymruCreator]

Thanks for this, I'v managed to get it all setup and it's mostly great, but for some reason the top tint isn't being applied in blend mode. Any idea what I can look into? I have found the part where it's supposed to multiply with topTint, but it doesn't seem to be doing anything.

[@Meow-or-Never]

Hi there, could you please tell me, how could I use this tool in a commercial project? Would I need to purchase it, and if so , can it work with 2021.1.7F URP ? My game could really use interactive grass, and Unity's terrain grass is just not cutting it.

[@varadwankhade2039]

when i'm trying this out in a seperate demo scene it's working just fine but when i go to my main scene (which is a floating island i modelled in blender) the painter brush doesn't work... like the green brush or any of the brushes don't work or even show... help me out please... i have a deadline real close...

[@Zolt_Bolt]

Hi MinionsArt can you make a tutorial on the thing that is following you the sphere one

[@MinionsArt]

It's just setting the velocity of the follower to move to an empty gameobject that's a child of the character with a little offset :) rb.velocity = Vector3.ClampMagnitude((targetposition - transform.position), maxmovespeed);

[@influency4075]

Hello, I would like to have some help to integrate this with the "Curved World" Shader on the unity asset store. Thank you!

[@stevphiericardo2790]

To those that can't get the blending part with the terrain, most probably it's due to InstancedTerrain. Unity's Instancedterrain does not support custom passes

[@geronimoangiolillo6769]

So how you do fix this?

[@dcry1003]

can i ask why does the grass color change from white after decreasing the enviroment lighting's intense multiplier to 0?

[@remi.scarlet.]

For some reason I paint and no grass blades appear BUT when activating the shadows I can clearly see that the meshes are there. Using URP 2021.3.18f1 and set up everything as shown in the video multiple times.

[@MinionsArt]

There's a setting called depth priming in the URP settings that turned to auto by default, turn that off and the grass returns.

[@remi.scarlet.]

@@MinionsArt Thx worked!

[@remi.scarlet.]

​@@MinionsArt Do you think it is possible to implement light cookie support? I only know how your shader works on the surface but not to the extent that I could evaluate if it is feasible.

[@crshsori7579]

HOLY SHIT

[@jtherussian]

Got it to work but the grass is always transparent and all I can see is some slight shadows from the grass mesh.

[@poctordepper4269]

Did you figure this out yet?

[@jtherussian]

@@poctordepper4269 I surrendered ages ago because it's beyond my lvl of comprehension

[@loganjones5537]

I had the same issue even though i updated everything to urp. I tried the BIRP shader in his Patreon and that worked for me. After switching it out do the same thing. Create a material of the shader, plug it in and disable and enable the compute script (like he showed in the video). Hope this helps!

[@AurrenTV]

I had the same problem yesterday, you guys need to make sure you have a universal render pipeline asset and all that stuff assigned in your project settings (look under quality)

[@planebreach]

I it possible to implement a feature that the grass do not always points up, but takes the surface angle into account ?

[@TheYuira]

Is it possible to add multiple interactivity support? For the case of multiple heroes?

[@flurinjenal374]

Looks nice, where can I buy it?

[@CymruCreator]

I'm also finding that the grass is too large and when I reduce the value on the slider, it doesn't seem to work very well. could it be conflicting with code from the previous version?

[@thelittlemob]

Wow

[@sarkariadmi4058]

After project build the color of grass become strange. . Please how to fix that?

[@artemis8368]

Is there a way to optimize it for big areas? Cause it looks very pretty but gets quite laggy quickly

[@phyzix101]

I gave this a try, but no matter how I changed the brush, tip and base colours the grass always looked pretty grey and unsaturated. I was going for a more realistic colour. Is there a way to make the colours more saturated?

[@IWasAlison]

Hi, Its amazing but can i use it on mobile platform with no lag?

[@MinionsArt]

I don' think it's gonna run well on mobile, but I never do anything on mobile so I'm not sure. But most likely too heavy.

[@TheYuira]

@@MinionsArt I tested the solution on google pixel 4a. I can say that there will be no problems on middle + and high end devices. The main thing is to be reasonable in the number of processed vertices on the stage. In addition, I would like to say that as a big optimization, which would be very desirable. GPU Frustrum Culling will be able to significantly increase performance and expand the range of use on mobile devices. It would be cool if you could consider this optimization (GPU Frustrum Culling).

[@loganjones5537]

My custom grass shader material is pink. I updated all the textures to URP but although the green selection tool and grass count increase, theres no grass. Could someone help?

[@loganjones5537]

I fixed it. For anyone else with this isssue even though you're using urp try using the BIRP shader instead. This worked for me