archived-shaders

[lunar valley]

but yes you can

[grizzled bolt]

I think compute shaders are specifically intended for that kind of purpose

[low lichen]

You can also use Blit for this.

[reef osprey]

I just got the shader from a big popular sprite shader store-package, I don't actually know what it uses to work.

[burnt juniper]

I'm new to Unity. Why's my shader graph material pink?

[grizzled bolt]

Shader error, missing or invalid graph target or misconfigured URP/HDRP

[burnt juniper]

How do I know if URP is misconfigured?

Or how do I know I have an invalid graph target?

[grizzled bolt]

Check the pinned messages of #archived-urp, find the installation instructions and make sure you've followed all of them
It's very common to miss some of the steps

If that doesn't work you can check what targets the graph has and make sure there's one for the active render pipeline
https://docs.unity3d.com/Packages/com.unity.shadergraph@12.1/manual/Graph-Target.html

[gusty marten]

Hey folks! I have a question on how I can store an attribute on mesh in maya and use it in shader as a mask?

[grizzled bolt]

Would a mask texture or vertex colors do?

[gusty marten]

I don't want to use textures but I vertex colors work. How do I set them up? I have no idea where to begin

[grand jolt]

Hello Everyone i have a texture that i want to apply to all my walls. But the tilling needs to be different on each wall how do i go about that? I tried looking online but most of the post were over a decade old

[strange basalt]

most materials expose tiling and offset controls

also can control that in the models themselfs when creating them with UV's

[grand jolt]

Yeah i tried messing with the Tilling offset on a specific wall but that changed all the walls at once

I figured i have to go the UV route

[lunar valley]

thats only if each wall uses the same material

[grand jolt]

They do have the same material

I ended up just make a script that changes the tilling

Idk if thats best practice tho

[lunar valley]

yes thats why it changed for all walls

[grand jolt]

Yeah that makes sense

I wanted to know if i can just the specitic material props on specific walls if they have the same material

It seems weird to have to make a material for each wall

[lunar valley]

don't think so

[grand jolt]

Yeah which is insane to me

The script ended up working so i wasnt too stressed about. I appreciate u talking to me tho friend best of luck to u on ur game dev journey

[strange basalt]

the script is working since its creating a new material instance per object and modifying it

[grand jolt]

that sounds bad for performance....also i ended up just making the thing i didnt want to in the first place lmao

i was trying to avoid making multiple materials and ended up doing that anyway lmao

F@)# i thought i had it figured out

Oh i see it in the inspector now.... It says Texture (Instance)

Ill do some research on the instance part

[strange basalt]

accessing .material creates a instance

.sharedMaterial uses the existing mateiral asset

other way of doing it per object but not creating new material instances would be modifying the mesh data and adjusting the UV's there

[grand jolt]

How would i be able to access the mesh data in unity tho? Im sorry i dont mean to ask alot of questions but im not super familiar with UVs

[lunar valley]

you reference the mesh and there you have then all the data

[grand jolt]

Aaahhh i see

[zealous thicket]

in a shader graph, is there a way for it to grab data from somewhere in code? like, for example, an array that represents squares for paths to be placed. can a shader on a terrain grab that data from the script somehow?

[grand jolt]

Gonna figure out the difference between Mesh and Mesh Filter ill look at the documentation and come back if i need anything thank u both so much

[lunar valley]

you can pass data from a script to the shader

[zealous thicket]

how would I start to do that? I'm still new to shader graph

[lunar valley]

reference the material the shader uses and then use setTexture, setFloat, set... to pass over some data

[zealous thicket]

in this case I worry I'd have to make like 4 million floats to represent the array of size I want

my array is 500x500 atm so not quite 4 million but still

unless there's a data type in a shader that an array can map to?

[lunar valley]

in hlsl you just straight up have arrays, but in shader graf I am not sure..

[zealous thicket]

hmmm

maybe there's a better way of storing that data, then

I am trying to make it so that the player can place paths on a grid, and the shader respects the paths placed and draws the appropriate texture

so my first inclination was "make an array the size of the terrain size" and have the shader read the array values and sub out the texture I need

but if there's a better way I'm all ears

[lunar valley]

why would placing paths need to be in a shader?

[zealous thicket]

mostly because I am using a shader to do the rest of the texturing

[lunar valley]

if you just need to place some textures in a specfic order next to each other, why does the shader need to figure out which to pick? To me it sounds like you can do that on the cpu

[zealous thicket]

what does "do that on the cpu" mean in this context?

sorry, I'm a little out of my depth here. do you mean just apply the texture using standard terrain stuff and forget the shader?

[lunar valley]

unitys terrain system? I thought everything was on a grid?

like a 2D grid

[zealous thicket]

well, sorta - the paths are on a 2d grid because its a top-down game and storing that info in a non-overlapping way means a 2d array of ints where the values represent predefined paths and 0 represents no paths

the terrain itself is sculpted during my terrain generation, a shader handles the texturing, and then I wanted to be able to walk around in-game, place paths, and see them visually show up, yanno?

so my thinking was there might be a way to translate the array of paths to some sort of data the terrain shader could read, I could grab the rounded x/y of the world pos, associate that with the path index, then display the texture that fits

but it seems like shaders might not handle that kind of data well? I dunno. not really my area of expertise

[lunar valley]

to me it sounds like you can figure out which texture to place on the cpu and then pass the correct texture to the shader

[zealous thicket]

what does "on the cpu" mean?

ohhhh

[lunar valley]

c#

[zealous thicket]

that's an unconventional route, I like it!

ah, hmm, but how would the shader know which texture to grab?

like, I translate my array of ints to an array of textures. how does the shader know which texture cell to read from?

[lunar valley]

the shader isn't grabbing any textures you are giving the shader the textures you want the shader to have

[zealous thicket]

how does the shader know where to place them?

the shader handles my other textures by reading data from the world position - angles to do cliff textures, heights to do grass vs sand, etc

I'm not sure how to get the data I'm looking for in a place where the shader can read from it

[lunar valley]

you can get position from the player for example

actually

[zealous thicket]

like, to be clear, if this is literally impossible for a shader to do, that's also an answer, I'll figure out another way of handling this

[lunar valley]

to me it sounds like you are making some sort off texture painting tool.

[zealous thicket]

yeah! sorta!

[lunar valley]

well thats a thing you can research about now, how people do these tools, cause they can be quit specific on their own

[ember scaffold]

Lmfao just looked up a tutorial and made one from scratch

Is there a way to add shadows from multiple lights?

[sharp hinge]

Hello, could someone help me converting it to URP?

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'



Shader "Hidden/SegmentationShader" {

    Properties {
        _MainTex ("", 2D) = "white" {}
        _CutOff ("", Float) = 0.3
        _ObjectColor("", Color) = (0, 0, 0, 1)
    }

    CGINCLUDE

    #include "UnityCG.cginc"

    uniform fixed4 _ObjectColor;
    uniform sampler2D _MainTex;
    uniform float4 _MainTex_ST;
    uniform fixed _Cutoff;

    struct input{
        float4 vertex : POSITION;
        float4 texcoord : TEXCOORD0;
    };

    struct v2f {
        float4 pos : SV_POSITION;
        float2 uv : TEXCOORD0;
    };

    v2f vert( input v ) {
        v2f o;
        o.pos = UnityObjectToClipPos(v.vertex);
        o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
        return o;
    }

    fixed4 frag(v2f i) : SV_Target {
        fixed4 tex = tex2D( _MainTex, i.uv);
        if(tex.a < _Cutoff)
            discard;
            
        clip( tex.a - _Cutoff );
        return _ObjectColor;
    }

    ENDCG

    SubShader{
        Tags { }
        Pass {

            CGPROGRAM
            #pragma target 3.0
            #pragma vertex vert
            #pragma fragment frag

            ENDCG
        }
    }

    FallBack "Hidden/InternalErrorShader"
}

[gloomy tendon]

Hi in a shader graph can you not modify the UV in the vertex shader part, only in the fragment (per pixel?) part? Or does it work differently to that?

[amber saffron]

No, you can't modify the UVs.
If needed, you can use a custom interpolator

[amber saffron]

Looks like an unlit with alpha clip ?

[gloomy tendon]

that seems strange, say you want to do rotation or other transform on the UVs, you can do it cheaply in the vertex shader or as part of fragment shader which is (possibly) much more expensive

[amber saffron]

For ... reasons ( 🤷‍♂️ ) shadergraph doesn't allow to write UVs in the vertex stage, so you can't do this.
But you can transform the UVs, store the value in a custom interpolator, and then use it as UV for sampling in the fragment stage

[gloomy tendon]

ok 👍

[stray rune]

guys anyway to reverse this?
i want white part is black part and so on

[lunar valley]

there is a one minus node

[stray rune]

thanks

[grand jolt]

Hi all, here I have the texture I read to get access to the first 4 layers of HDRP terrain, I was wondering if they ever added a second control texture for the last 4? it would be great to be able to modify all 8 layers in HDRP...

[stray rune]

guys how to combine 2 this?

[grand jolt]

add

[grand jolt]

unless your trying to render that texture over only the white parts, that would be Multiply

[stray rune]

im about to render texture on black part

[grand jolt]

then dont use One Minus, make the middle dot white

[stray rune]

but how?

im new at this

[grand jolt]

delete the one minus node, then put both outputs into a Multiply node

[stray rune]

alright

not work xd

[regal stag]

I haven't used HDRP but I have seen that it's TerrainLit shader specifies a keyword, #pragma shader_feature_local _TERRAIN_8_LAYERS and uses _Control1, and Splat/Normal/Mask 4 to 7. So it does seem possible. Whether those will work in SG though, idk.
https://github.com/Unity-Technologies/Graphics/tree/master/Packages/com.unity.render-pipelines.high-definition/Runtime/Material/TerrainLit

[stray rune]

oh wait

[grand jolt]

ok, im fairly sure I tried _Control1 a while back and it didn't work but ill give it another shot and report back so you know

[stray rune]

i forgot

[grand jolt]

put it to output stack? XD

[stray rune]

XD

not what i wanted xd

[grand jolt]

what texture are you rendering?

I might be getting confused when you say render texture, are you rendering the scope view?

[stray rune]

ah yes

sniper scope

im not using second camera to render

[grand jolt]

are you trying to render to this

or that

[stray rune]

yes and texture in middle

with OneMinus XD

[grand jolt]

yeah, delete one minus

use that

[stray rune]

but it will became this

[grand jolt]

yes, that's where you render your scope

your camera

[stray rune]

no that look a like a dot

wait a bit i will capture something

[grand jolt]

ok

also i think you may have your size wrong somehow, as it seems offset to the left a little but im not sure if thats the camera angle your looking at it from

[stray rune]

oh you may right

still xd

this is what i wanted

[grand jolt]

needs to be something like this

[stray rune]

lemme try

[grand jolt]

Yeah, look into Render Textures, then use that as your _MainTex and it should render to middle circle

im AFK anyway, good luck

[stray rune]

thank you anyway

[grand jolt]

thanks @amber saffron , about to check it out 🙂

[stray rune]

unfortunately xd

lmao i cant add texture 2d to middle but i made something similar

[prisma haven]

Hello, i'm trying to figure out how to make a sprite outline be visible only on UI layer and excluded from other layers
Does anyone know how can i achieve that?
I was considering using SpriteMask, but it doesn't work on UI

• I have an outline shader that is used for a material attached to a sprite renderer
• Outline shader is "sprite unlit", switching it to "unlit" draws the sprite and outline on top of UI, which is not really what i'm trying to achieve;
  Should i make a separate sprite with that material (which theoretically should make it similar to a silhouette, which is nice too)?
• Canvas render mode is "screen space - camera"
• I'm using URP

[scarlet crater]

how could i make a grid of repeatable UV cells that can be translated around as a whole?
im attempting to recreate this pattern where the "pixel" is shifted up every other row

I've got it worked out but since im using the fractional component of the UV coords, it doesn't actually translate up properly, instead it just cuts it off where it wraps from 1 to 0

https://cdn.discordapp.com/attachments/720369063490093166/1075080436218347551/image.png

[amber saffron]

You can "just" add a Y offset when U is odd or even

[scarlet crater]

That's what I'm doing

Unless I'm misunderstanding

[amber saffron]

Yeah, sorry, I've written before reading your code 😅

[scarlet crater]

Haha no worries, I appreciate you stopping to help either way

[amber saffron]

Ah, issue is : apply the offset BEFORE the fractional part calculation

[scarlet crater]

ah..

well that was simple 🤦

Thanks so much

[amber saffron]

Need to also offset the display texture UVs 🙂

[scarlet crater]

for this particular effect, i dont think i have to

I was basing the effect off what i learned from this video:
https://youtu.be/dX649lnKAU0?t=580

i think if i were to replicate a more modern LCD display, i would have to "pixelate" the input texture

i may be totally wrong though

[amber saffron]

It's more that in you screenshot we can clearly see that some sub pixels are half illuminated, which doesn't make sense ?

https://youtu.be/dX649lnKAU0?t=680
Ok, my bad, it is possible. You learn every day 🙂

[lunar valley]

just use your oultine shader on the sprites for ui

[prisma haven]

i'm not sure how to do that
do i need to attach it to UI image?

[prisma haven]

or do you mean i should edit the shader itself?
i'm sorry, my shader knowledge is very limited, despite searching stuff on the internet

[sour grove]

hola fellow coderz, i have a shader issue with my water plane. im using RGB to do vertex position displacement but the old format used G in RGB to connect to the input of the Combine but then i read it was swapped to B (blue) in the Y axis. when i have it in G the water plane appears but has no displacement. when i use blue the plane goes all scrunched up and flat. cant figure it out. can provide screenshots of my shadergraph if necessary

[lunar valley]

please send us the code and when you are working with positions can you please say the axis instead of colors its much clearer that way

[sour grove]

Sure but the combine node has an output of RGB and it is not clear as to which is XYZ 🙁

I'll grab a screen in a min

((Its shadergraph))

[lunar valley]

rgb is essentially the same as xyz

[sour grove]

Right that makes sense

Back in a short while with the ss

[tranquil wolf]

Hello, I am trying to follow this tutorial for creating grass: https://youtu.be/wbEn3PqX80c

However, when I go to paint, the tool seems to be selected on my player object and does not want to paint on the terrain. Any ideas? I have tried googling and couldn't find anything

it's like this

[untold hazel]

Is there some form of URP Shadergraph texture to get the Exposure of the Camera? I am trying to convert an HDRP Post Process over to URP and I need an Exposure node that doesn't exist.

[autumn sigil]

Hey, anyone know how to access the Volume and Slice and SDF features of a 3D texture in Shader Graph?

Is there actually a way?

[chilly lava]

Hi! I made a small water shader but when testing on my mobile phone the game is running in like 3fps when looking at water

[tranquil wolf]

I think I figured this out, had to change this setting:

[regal stag]

I assume you're referring to the visualisation modes for Texture3D assets in the inspector. You'd need to look up "raymarching" or "volumetric raymarching" techniques to replicate the SDF and Volume ones. You'd need to use Custom Function nodes to achieve those in shader graph as it requires a loop.
As for the Slice one, that's probably just 3 quad meshes, sampling with swizzled uvs & slice position passed in via property.

[regal stag]

Could try swapping the Simple Noise node out for a repeating noise texture instead.

[autumn sigil]

So basically the Texture3D is the density of liquid (amount of liquid) at a given point in the container. It's a hot liquid, and I'd like to show the amount of heat imparted to the container, with some kind of heat decay (red-->orange-->yellow-->green-->dark green). You have an idea as to how to best do this, whether in Shader Graph or in C#?

[chilly lava]

@regal stag It's better now, can i do other improvements?

[grand jolt]

Trying to hook up the 4th layer now, I'm not even sure if this is how to correctly specify that keyword.....

are there any tutorials on it anywhere?

[sour grove]

here is my shadergraph and the result im getting

anybody have this problem before? i just want the water to be displaced so it wibbly wobbles

if i switch the out to B it has displacement but its squished, if i switch it to G it will display a flat plane but no displacement. cant figure it out

[regal stag]

You'd just need the _TERRAIN_8_LAYERS part for the reference. (Whether it'll actually do anything though idk)

[grand jolt]

hmm, odd, no dice

[regal stag]

Which axis you want would depend on the orientation of the plane mesh data - but usually Y/G is up.
Since you're doing displacement in object space, maybe check the scale of the plane object too as that would also be taken into account. Make sure the Y scale isn't set to 0 or something.

[blissful marlin]

any idea how I can add a custom float out on a shadergraph? or would I need to do a regular hlsl shader for that functionality

[sour grove]

legend, thank you

[regal stag]

Shaders don't typically have outputs like that. What exactly is the intention/usage behind this float value?

[blissful marlin]

I have a script that flips a bool controlling which sprite sheet is playing, and I'd like to have the script know the index so the bool can only be swapped when the sprite index is currently 0

the sprite sheet is flipped as a function of time
ie if I had a getFloat("currentIndex") then it would be trivial to handle

[regal stag]

I don't really know what part of HDRP enables that 8-layer keyword/feature. Maybe it's a setting somewhere on the Terrain component?

[grand jolt]

Ill check it out, thanks

[regal stag]

Instead of using a bool & time in the shader, I would calculate the index in the C# script and pass the index as a float property.

[regal stag]

Oh I've just realised you've used a enum keyword for this too. You'd likely want a boolean keyword instead.

[kind spear]

Hi, do anyone know how can I blur a Texture in unity shader graph ?

[lunar valley]

https://youtu.be/c30uBsyMnNY

[lunar valley]

here you go

[kind spear]

Thank you I will try it

[autumn sigil]

@regal stag need expert advice if possible, I have a feeling this is way above my head generally

just trying to figure out how to do a heatmap (like infrared goggles) shader from a RenderTexture with said 3d properties

like so but not flat:

[shy fiber]

Why do parallax occlusion mapping looks ugly at some angles?

[amber saffron]

IDK what you RT has as informations, but maybe just take the luminance as input for a gradient sample ?

[amber saffron]

At grazing angles POM need more steps (more precision) to resolve. If it lacks them, you get this stepped effect.

[shy fiber]

with more steps it eats fps

[amber saffron]

Well, yes.

I mean, that's just how it works.
You can control the steps count depending on the view angle to have less steps when viewed vertically and more when the angle is near tangent, but this look is just normal for POM

[winter timber]

Tried to make a shader, that would flip through a sprite sheet, but the frame was different depending on the object's position. It works fine if viewed from top down, using an orthographic camera, but otherwise it looks like this. I don't know what went wrong, and I don't know how to describe it. (also sorry if the images cause the previous conversation to get knocked out of sight...)

[shy fiber]

Can i do it on shader?

[amber saffron]

If you want the frame to be different depending on the object position, use the Object node.
Here you are using the Position node which returns the pixel position, so it is changing for every pixel.
You can still use it, but you may need to step it so that the value is constant for all the pixel that a single tile will display.

[amber saffron]

Shader or shadergraph ?
Either way, the formula is something like : steps = lerp(max, min, abs( dot(normal, viewDir) ));

[shy fiber]

shadergraph

Ok

[amber saffron]

Well, same, but with nodes 🙂

[shy fiber]

Thank you

[winter timber]

surprisingly, the pixel position is what i want, i think, cause then it makes the animation transition smooth, and actually looks better then using the object's position. Do you think that could be what is causing it to render all weirdly?

[amber saffron]

I can not say what is weird or not in this capture, I only see noise on purple pixels ...
BUT I am 100% sure that using the pixel position to offset the tile index can result in errors if not controlled properly

[winter timber]

ill try it with object position, and I'll get a better screenshot using some debug textures with easy to see edges, brb!

ok this should be easier to see what is weird (these should be a flat plane of these cubes using the debug texture)

[amber saffron]

A flat plane ?
But the geometry doesn't look flat ...

[shy fiber]

@amber saffron is it fine?

[winter timber]

that is the issue, believe it or not, those cubes all have the same y level and the same scale

and sadly switching to object position did not fix it

[amber saffron]

Ah, the issue is alpha rendering order then I guess.

[amber saffron]

Looks like

[winter timber]

potentially, as this is a ground block (nothing should be below it), should i then set it to be in the negatives for sorting priority?

[amber saffron]

If all the cubes are submeshes of the same mesh object, the faces are not sorted against each other, resulting in unpredictable overlaping of faces

[amber saffron]

Easiest would be to set the shader to be opaque if you don't plan to have transparency

[winter timber]

I didn't even know submeshes existed before that message lol, I'm pretty sure each one is its own mesh

[winter timber]

i plan on using this shader for a few things that will need transparency, so should i just have a transparent version, and an opaque version then?

[twilit jackal]

I have a normal map that is updated when the texture is changed. How do I get that to update in the game after it changes? I can see it changing in the material as it changes but it doesn't apply to the game.

[amber saffron]

Yes

[winter timber]

ok thanks!

[amber saffron]

How is the normal map updated ?

[twilit jackal]

I'm using Normal Map Maker from the asset store. It generates the texture and then I apply it to the sprite renderer's material with set texture _NormalMap

It updates in the material but not in game. Very confusing how this works.

[winter timber]

Hmm just discovered another oddity with my shader. It seems the further away from 0 0 0 i go, the more the scaling part of the script breaks. (it is meant to stop pixel bleeding)

[amber saffron]

Are you 100% that it doesn't work ?
IT'a hard to distinguish the normal map effect on these brown edges.
Did you try to temporary remove the color texture to see the lighting with the normal ?

[winter timber]

this only seems to happen in the negative x direction, odd

[twilit jackal]

The bottom of the water should look like this.

I have an idea. Let me test a bit more.

[amber saffron]

Sorry, I don't understand the issue here either.
I see some node that result in constant tiling and offset, and a tiled texture (with some green/yellow color change ?), that's all.

[winter timber]

that tiled texture is this, and in that screenshot it is trying to show the first frame, i think. The further from 0 0 0 the more the texture is rendered weirdly like the screenshot.

the nodes basically allow me to scale the pixels displayed, this allows me to stop the 2nd frame from bleeding into the 1st frame

does that make sense? Sorry I'm not the best at explaining lol...

[amber saffron]

Maybe some issue with the flipbook node ... try to pu a Fraction node between the UV and flipbook

[winter timber]

Ok, I'll try that and report back!

[winter timber]

nope, still rendering oddly

I'll quickly try removing those scaling things, to make certain it is them, that is causing the issue

Aha, I was wrong! It is not the scaling stuff that is causing it to go weird! Fascinating!

huh, I have been bamboozled... For some reason changing one material of one object, affects how a bunch of other materials render

by having no opaque versions of the shader present in the scene, the issue of far places breaking rendering is fixed????

im so confused lol

[amber saffron]

The material asset is shared by multiple objects

[winter timber]

yes, but what i mean, is that i have some objects with the transparent version, and some objects with the opaque version, and if i remove all the objects with the opaque, then the issue goes away

[amber saffron]

🤔

[winter timber]

even weirder, the previous issue (the one with the cubes not rendering right, due to the transparency), gets fixed if i go back to an old shader (that is transparent), but manually lets me select the tile

Something somewhere is going wrong...

what the hell... turning shadows off in the opaque shader causes the transparent shader to display only a single pixel from the texture that is super stretched

Should I bug report this? As this doesn't seem like intended behaviour...

[amber saffron]

I have the feeling that something is wrong with your setup, but there is so many informations and unknown about what you did that it's not easy to decipher.

[winter timber]

Unfortunate... Is there anywhere I could start, to try work out what is going wrong?

[pallid root]

I tried converting this shader by valve to HLSL to use in URP project
https://github.com/ValveSoftware/steamvr_unity_plugin/blob/9442d7d7d447e07aa21c64746633dcb5977bdd1e/Assets/SteamVR/InteractionSystem/Core/Shaders/Silhouette.shader

I managed to resolve most of the error by referencing this blog post https://teodutra.com/unity/shaders/urp/graphics/2020/05/18/From-Built-in-to-URP/

But it seems like it is not doing anything when using it in my project.

[winter timber]

I just don't understand why having objects with certain materials, affects other objects with different materials, it doesn't make sense....

[hidden furnace]

I'm new to shader programming just read The Book of shaders and shaders cook book. I'm getting shader error in unity. I initialized the _SunTint field and tried to use it in a method. But VsCode doesnt highlight titnt variable as others. And I'm getting error. Error message is on image.

[hidden furnace]

Sorry i just i didnt count variables carefully

[winter timber]

Ok, i found a solution!!! But it makes no sense!!!!! Any scene that has been opened more than once, gets infected with the distance issue, which means by creating new scenes everything is fixed, until you close and open that scene, and it is once more broken!!

[amber saffron]

Indeed, makes no sense 🤔

[winter timber]

Yup! I reckon that either there is a terrifying bug somewhere, or that I have mangled my setup so badly that these shaders have decided to give up! Thanks so much for all the help. Hopefully tomorrow I'll find a way of fixing this oddity.

[floral fox]

Some of the faces of the probuilder objects are not visible only in the material with the shader I made. Can anyone tell me why it is doing this?

[amber saffron]

Some would think that the problem is from the shader you've made, but you didn't share any information about it.

[amber saffron]

🤷‍♂️

[candid bane]

how do I rotate a mask around the center of the uv?

[amber saffron]

Use rotation node to rotate the UVs before the mask input, centered on 0.5,0.5

[lunar valley]

there is a rotation and offset node

[leaden zinc]

I wonder, how can i read vertex color on a terrain? I want to use them in a custom shader with shadergraph vertex color node, but im confused with terrain layers.

[grizzled bolt]

iirc the Terrain system uses mask maps, not vertex color for the layers and details

[supple pendant]

Hey guys, I have a problem where I have a shader that takes sprites and changes their colour. The shader works great and is visible in the scene view but invisible in the game view. The only way I found to fix it is to change the canvas that has the sprites on it to camera instead of overlay but that messes up the game a lot. Anyone knows if there is a different fix?

[stray rune]

hello guys im want to make an Texture 2d on my Rounded Rectangle but i dont know how

Add and Multiply not work

[candid bane]

how do I make the needle render above the dial?

the H should be hidden

[amber saffron]

Use lerp node to stack things.
A = base
B = upper "layer"
T = B&W mask to display B over A

[amber saffron]

Please show graph ?

[candid bane]

@amber saffron thanks again!

[scarlet arch]

how can i make something like that in Unity?

[lunar valley]

uv node pluged into split node, and the ping pong node is essentially a simatrical triangle wave which is then being combined

[hasty depot]

hey by using amplify, and using transparent how do i counter act the distance dithering https://cdn.discordapp.com/attachments/563719446393389076/1075437358595452960/0bef1bf537e377659801a10d0277f9a5.mp4

[scarlet arch]

I can only split colors that are contained in a vector, I can't use that for XYZ

[amber saffron]

I don't understand the issue, you are doing exactly what you wanted.

The split node works for vector 2/3/4 and color, spliting into RGBA / XYZW components

[scarlet arch]

i get this :

[calm aspen]

What I need to look up in order to apply shader only to parts of a mesh surface?
I have a mesh constructed out of a height bitmap, and required parts can be based on the colour from the height bitmap or from a different height bitmap. Whichever is required for the implementation.

[tranquil wolf]

^I have a similar problem to the above. I got this amazing grass creation script tool that works in brush mode, but I want to change it so it generates the grass with the settings I implemented not with the brush but all over a specific terrain material I have

[lunar valley]

and whats the problem with that

[shadow locust]

Use a step function in the shader with the heightmap color as input to decide whether to discard a given fragment or not, or apply different treatment to it

[scarlet arch]

ok I should rather explain to you what am I trying to do with this shader

I extracted a model from the game Animal Crossing on 3DS but in order to save space in the rom of the game, the developers made a texture that can be mirrored, so if I import a model from animal crossing without shader I have weird textures like this:

instead of this :

as you can see the furniture have some problem that i can fix by using this shader

(the seats are very weird)

[lunar valley]

right and I am guessing you want to recreate the shader and where is the problem when doing that?

[scarlet arch]

exactly

[lunar valley]

and where is the problem when doing that?

[scarlet arch]

my texture is not recognized, I simply have a red line and a green line which represents the RGB colors but I do not see my texture

Like this

[lunar valley]

show me the shader

[scarlet arch]

ok i can add one thing i guess

the texture at the right in the inspector is absolutely useless

and i will remove the other node "split"

[lunar valley]

where are you using a texture? or is that the texture?

[scarlet arch]

there is no texture

idk where i should use it

[lunar valley]

I think the uvs of the object are not proper

have you checked the uvs of the objects?

[scarlet arch]

how can i get this in a shader?

[lunar valley]

what?

[scarlet arch]

the real uv

of the object which have the material

[lunar valley]

you are allready doing it but the uvs you are getting are probably shit

[scarlet arch]

oh

i see

[lunar valley]

you either need to fix the uvs of the objects or use the triplanar method

[scarlet arch]

triplanar?

[lunar valley]

its a technique in shaders with that you don't need uvs

[calm aspen]

Wait, I can pass fragments to another shader? Or I need to integrate step function into the target shader as a part of the rendering process?

[prime shale]

I think he means that use the heightmap, and depending on the heightmap pixel value you use that to do different treatment depending on what that heightmap pixel value is

i.e.

float heightValue = tex2D(heightMap, uv).r;

if(heightValue > 0.5)
{
  //do A
}
else
{
  //do y
}

[misty crown]

Hi there,
does the : VPOS semantic return the screen space position of the vertex in pixels or in normalized device coordinates?

Would appriciate help here, as I am having trouble finding the right documentation

[scarlet crater]

should be screen space

let me double check

appears to be yeah

[lunar valley]

yes screenspace and sv_positon is clip space

[scarlet crater]

I have a question of my own now actually

so i've written a shader to emulate the effect of a CRTV screen, and in an attempt to mitigate the moire effect, I've used one of the screenspace derivative nodes to determine when to draw / not draw the phosphor pattern

generally it works great, but it introduces some aliasing artifacts

Without distance fade:

with:

im wondering if there is a method of reducing those artifacts?

[shadow locust]

Well specifically I mentioned using step because branching is not ideal but conceptually yes this

[scarlet crater]

return lerp(mask, float3(1,1,1), length(fwidth(p)));

this is all the code is, if that is helpful. p being the UV coordinates in this case

[misty crown]

Thank you!

[scarlet crater]

No problem! Happy to help

[misty crown]

thank you

[lunar valley]

don't get it I think it looks great ¯_(ツ)_/¯

[scarlet crater]

It does for the most part

It's the jagged white lines that are turning me off

[lunar valley]

the ones in the second pic?

[scarlet crater]

yeah those ones

they emerge from the fwidth() function

[silent fulcrum]

Can we change a shader graph's enum keyword programatically during runtime? I've tried Enable/DisableKeyword but it doesn't do it. Any help would be greatly appreciated

Nevermind, I was missing an underscore in my string reference, oops 😛

[dapper heath]

is anyone familiar with using CRTs? i keep encountering this warning with my implementation that more or less stops the coroutine from cycling through

        IEnumerator ProcessDyeTexture() {
            foreach (KeyValuePair<string, List<string>> skinPair in skins) {
                SkinDye skinDye = dyes[skinPair.Key];
                CustomRenderTextureUpdateZone[] crtZones = new CustomRenderTextureUpdateZone[skinPair.Value.Count];
                for (int i = 0; i < skinPair.Value.Count; i++) {
                    AtlasRegion region = atlas.FindRegion(skinPair.Value[i]);
                    if (region != null) {
                        CustomRenderTextureUpdateZone crtZone = new CustomRenderTextureUpdateZone();
                        crtZone.updateZoneCenter = new Vector3(region.x + region.width / 2, region.y + region.height / 2, 0);
                        crtZone.updateZoneSize = new Vector3(region.width + 1, region.height, 0);
                        crtZones[i] = crtZone;
                    }
                }
                dyeTexture.SetUpdateZones(crtZones);
                dyeMaterial.SetColor("_Red", skinDye.colors[0]);
                dyeMaterial.SetColor("_Green", skinDye.colors[1]);
                dyeMaterial.SetColor("_Blue", skinDye.colors[2]);
                dyeTexture.Update();
                yield return null;
            }

code for reference

dyeTexture in this case is the CRT, tl;dr is that it's cycling through a spritesheet texture, assigning various regions (so like 50x 75y might be a sword sprite) and running a dye shader on that zone

[scarlet crater]

i ended up figuring it out, the artifacts were caused by calling the derivative function after a frac call

[dapper heath]

this is fixed without restarting unity by just saving the project? i don't fully understand what's happening here

[lyric copper]

Has anyone stumbled across a shader like the one in this video?

https://www.youtube.com/watch?v=JFn2kK8GhUQ

[winter timber]

Ok after a ton of trial and error, it appears that it is mipmaps that cause this! Also odd but when I first disabled the mipmaps it gave this error, but I'm sure it is fine, cause the distance issue is fixed!

Welp it seems that solution has other issues though. As now shadergraph refuses to create new nodes, instead giving me this error:

ok and trying to connect existing nodes together causes memory leaks, how fun

Why is it that whenever i use unity, i always manage to break it in the most baffling ways possible lol?

[winter timber]

aha, it is not mipmaps, or atleast it is mipmaps, but only for 1 scene, the other scene is still broken, haha

oh and now both scenes are broken, how wonderful

I've tried googling everything under the sun, but nothing comes up! It really seems like I'm the only one to have this problem....

oh also minimising unity and then un-minimising it sometimes fixes it, but not often

what the hell

ok, creating new materials and assigning the shader to them, causes those materials not to break, atleast for a bit

[stray rune]

unlit shader cant use multi color?

[meager pelican]

I'm sorry CK, but I don't remember the exact nature of the problem, and there's been several posts. The reason I mention this is because others may feel the same. I mean, it's hard to track a problem across several day,s, assertions, and changes. So if you have a situation like this ^^ where you can get a "sometimes fixed" image, and one that is messed up, maybe post both examples again. One where min/un-min fixed it, and the broken one. Maybe someone will have better understanding of what is going on.

One think I know is that if you're having MIP mapping issues, you'll often get "texture crawlies" going on in the distance too as the camera moves.

[winter timber]

really?

[meager pelican]

What? Of course it uses multiple colors. It's shading colors.

[winter timber]

ok ill try!

[stray rune]

i only see alpha output

[meager pelican]

Maybe try putting a color into the color output.

[winter timber]

ok so this is what it looks like when broken

and this is what it should and sometimes does look like

the issue only ever occurs in the negative x direction when far away from 0 x

it seems that anything and everything can fix it, but only for a while

this makes troubleshooting near impossible

also shadergraph often breaks for no reason

does that help?

how do i even google that? "Shader breaks when far in the negative x direction, and everything fixes it"?

[tacit parcel]

this looks like the texture is not repeating (clamped)

[winter timber]

what does that mean?

ok think i found what ya talkin about, ill try changing them, thanks

[meager pelican]

Check your texture import settings.
Yeah, those.

But that only happens when UV's go above/below 0-1, they need to "wrap around" so you can also check UV calcs.

Depends on what your shader is doing.

Also make sure your uv values are full floats and not halfs

[winter timber]

ok setting everything to repeat instead of clamp, has fixed all the textures with transparency, now only the opaque textures are broken

[winter timber]

hold on ill send a screenshot of my shader, it is a simple flipbook animation thingy

[meager pelican]

You might try playing with Aniso filtering and AA settings in your setup.

[winter timber]

here is my shader, hopefully discord compression doesn't destroy it too much

[winter timber]

ok ill try that

[meager pelican]

So the gist is that you're selecting the flipbook page based on world position.

[winter timber]

yes, so depending on the world position, a different frame will be shown, allows me to have a sort of waving darkness affect

[meager pelican]

what is the effective range of the worldpos in units? What's the "far distance" value that f's up?

Are you running out of significant digits in your floating point calcs?

[winter timber]

so far the smallest I've tried is -400, but I'll go quickly check what the smallest far distance is

[meager pelican]

It was just a shot in the dark. 100's -/+ isn't that bad. If you were in the 100,000 range, I'd wonder.

Maybe re-work it (IDK what it's really doing and it's too early for me to do the math 😉 ) with a modulo or something so that the math "is different".

[winter timber]

ok just got -62 to be a far distance, but it seems it isnt consistent, and since then i haven't gotten that little since

[winter timber]

I'll try that

[tacit parcel]

where is this FPS input come from?
also is it inconsistent in editor or during play? Time node inside editor behaves differently than when running, I think

[winter timber]

fps, is however many frames per second i want the animation to run at (well roughly, as the adding of the position does kinda melt the math a tad)

[winter timber]

it is consistently inconsistent unfortunately, whether I'm in editor mode or in play mode doesn't seem to matter

[stray rune]

how to reverse alpha color guys?

[tacit parcel]

ah I see... so it's a constant number.

[stray rune]

shader is hard xd

[winter timber]

assuming it is the same as inverse mass, then 1/alpha I would assume?

[winter timber]

ye

[winter timber]

actually no, it wouldn't be the same, sorry

atleast i dont think so

[meager pelican]

Or try the one-minus method to "reverse it".

AKA 1-alpha

[stray rune]

i used one minus to reverse transparent spaces so...

[tacit parcel]

seems like one of the uv members might be clamped to 0, either x, or y
my wild guess is that that the modulus node give negative number (?cmiiw), so maybe add an abs node or remap node between the modulus and the flipbook node
iirc, flipbook node expect 0..1 input

[winter timber]

modulus shouldn't be able to give a negative number

if you have python, open it quickly, and use % as the modulus operator

anything%2 should be either 0 or 1

in general x%y == somewhere inbetween 0 and y

you can also have floats, that is fine

[tacit parcel]

how about -1.5 % 1 ?
I know it should be 0.5 but I'm not sure with modulus node in shadergraph

[stray rune]

damn it alpha is on top emission

[winter timber]

it should be 0.5, unless the modulus node works differently to regular modulus... I really hope that the modulus node works like regular modulus...

there will always be atleast 2 frames though

https://docs.unity3d.com/Packages/com.unity.shadergraph@6.9/manual/Modulo-Node.html seems to suggest it uses fmod, whatever that is

[winter timber]

https://www.skytowner.com/explore/difference_between_the_methods_mod_and_fmod_in_numpy seems fmod does handle negative numbers differently to mod. I'll try to put some nodes around to force it to be positive then

[tacit parcel]

it seems it does works differently than regular mod

[winter timber]

welp, so should i use nodes to force it to be positive? Or is there some way to get access to regular mod?

but flipbook shader can handle negative numbers

atleast it should...

if you manually type a tile index into flipbook then it handles negative numbers fine

something strange is afoot

[regal stag]

Could recreate the mod function. If you don't want fmod, then try x - y * floor(x/y)) (equivalent to glsl's mod function)
https://www.cyanilux.com/faq/#glsl-mod

[winter timber]

I'll try that in the morning, I don't really see why handling negatives like fmod would affect things, but at this point I'm willing to try anything lol

[gloomy gust]

Hey guys, i downloaded this shader online that hides 2D sprites based off the amount of light incident to it. as you can see in the image, it does its job, but is there a way for me to make this completely transparent? it gets more transparent as it gets darker, and is completely transparent when its black, but that kind of defeats the purpose of the shader. anyone know how i can make it go transparent at this level?
https://cdn.discordapp.com/attachments/497874081329184799/1074731728557592697/image.png
https://forum.unity.com/threads/script-for-generating-shadowcaster2ds-for-tilemaps.906767/
this is the shader i downloaded, if it helps 😄

https://stackoverflow.com/questions/65696260/is-there-a-way-to-hide-a-player-who-is-in-the-shadow-in-unity-2d-light-system/67780057

sorry i mean here

[scarlet arch]

how can i fix the lines on the nose of this character?

(everything in red are the lines that i want to remove)

[scarlet crater]

i could be wrong but try disabling mip maps on the texture?

you can do that in with a toggle in the texture import settings
or you can access lower mip levels with the tex2dlod() function
eg.) tex2dlod(_MainTex, float4(uv, 0, 0));

[scarlet arch]

ik

but it doesn't change anything sadly

[scarlet crater]

i think it could also be caused by texture filtering

try switching it to point maybe?

[scarlet arch]

already the case

[scarlet crater]

well damn

[scarlet arch]

i only the lines in game

not in the scene

(in the viewport)

[scarlet arch]

I removed the anti aliasing and it works

(not a big problem because i want to make a game with PS1 graphics)

[gloomy gust]

anyone know a fix?

[scarlet crater]

I have a geometry shader to generate billboards on each vertex of a mesh, and it works fine, except the quads seem to shrink pretty significantly when the camera is direcly overhead.

float3 center = p[0].pos.xyz;

                float3 up = float3(0, 1, 0);
                float3 look = _WorldSpaceCameraPos - center;
                
                look = normalize(look);

                float3 right = cross(up, look);
                up = cross(look, right);
                
                float3 r = right * _Scale * 0.5;
                float3 u = up * _Scale * 0.5;

                float4 v1 = float4(center + r - u, 1.0f);
                float4 v2 = float4(center + r + u, 1.0f);
                float4 v3 = float4(center - r - u, 1.0f);
                float4 v4 = float4(center - r + u, 1.0f);

[scarlet pulsar]

i created water shader and it has side effect on objects which im looking on from same side of water. Any advice how can i solve it?

[tranquil wolf]

trying to create a sky using shaders and there's this weird line that wraps around the scene- any ideas?

if I turn the camera around you can see it on the other side too

[scarlet crater]

Try this out

[scarlet crater]

.

[tranquil wolf]

Probably being dumb, but I cant find that setting in the inspector for this material

[scarlet crater]

Oh I thought you were sampling a skybox texture

I don't think that will apply then

[tranquil wolf]

No I am creating a sky with a shader

[gloomy gust]

anyone know a fix for this??

[shadow locust]

Nothing can fix the deep creases in Tom Nook's face, carved there by decades of observing frivolous players coming in and out of his store, failing to pay their debts. The jaded nature of his character is etched into his very soul, into which his face is merely a looking glass.

[scarlet arch]

lmao

it's an FPS game so i can kill Nook

I WILL KILL NOOK TILL HE DIE 😈

[misty crown]

Hi can smeone help me understand why we divide by scrPos.xy by W
float2 wcoord = (i.scrPos.xy/i.scrPos.w);

Is it to get normalized device coordinates? Or too fix the perscpetive, from my understanding the perspective was already fixed when converted into clip space?

Appriciate your help!

Thank you

[regal stag]

Yes, it's used to convert from "clip space" to "normalised device coordinates", as well as actually apply the perspective projection. It's known as the "perspective divide", so may be able to look that up for more info.

[regal stag]

Hard to tell why this is occurring without seeing the shader. But note that for a skybox, the UV coordinates are actually 3D (they are the same as the vertex positions). That may be related to why this is happening.

[misty crown]

Thank you!

[serene creek]

Hello, need help understanding why the Shader render queue keeps going back to its default value, I set it to 3010 but it will go back to 3000. Appreciate any help

[regal stag]

The common way to fix this is sample the depth texture (Scene Depth node in shader graph) in Eye space, using the distorted screen position, then compare it against the depth of the water plane (e.g. W of raw Screen Position). Can use a Comparison (Less or Greater) into a Branch node if using shader graph.

If the scene depth is smaller, the object is above the water, so if we distort the opaque texture (Scene Color) it'll result in this side effect you see. There's no way to really know what the pixel colour should be behind the object - but it's common to just use the non-distorted Screen Position. Won't be perfect, but should look better than the current result.
And if the scene depth is larger, then can continue using the distorted screen position. These would be the True/False inputs of the Branch.

Here's a simplified example (from https://www.cyanilux.com/tutorials/water-shader-breakdown/)

[regal stag]

How are you setting the render queue?

[serene creek]

From the inspector

[regal stag]

Hmm I'm not sure then, maybe a script is overriding it?

[nocturne gorge]

does anyone know how to get the default nodes back into these? if i try to add them i just doesnt even show up

supposed to look like this yknow

[regal stag]

Have you got a Target selected under the Graph Settings (tab of Graph Inspector window)?

[nocturne gorge]

Oh, thank you very much!

[serene creek]

Anybody knows why every refraction shader is causing ghosting on objects in front?

[gloomy gust]

i feel like this is pretty simple to fix, but i dont know much about shaders. can anayone please help me with this its been hours now

[misty crown]

Could someone help me understand how this makes repeating bars across the screen i am having trouble figuring out this piece of code. Thank you

`fixed4 frag(vertOut i) : SV_Target {
float2 wcoord = (i.scrPos.xy/i.scrPos.w);
fixed4 color;

            if (fmod(20.0*wcoord.x,2.0)<1.0) {
                color = fixed4(wcoord.xy,0.0,1.0);
            } else {
                color = fixed4(0.3,0.3,0.3,1.0);
            }
            return color;
        }`

[regal stag]

wcoord is a position on the screen here, (0,0) in bottom left and (1,1) in top right.
20.0*wcoord.x is taking the X/horizontal axis, and changing it to range from 0 to 20
fmod(x,y) is a hlsl function which returns the floating-point remainder of x/y. It looks like a sawtooth wave (/|/|/|/) when graphed, but ranging from 0 to y, so 0 to 2 in this case (but repeating, 10 times, I think).
Since that ranges from 0 to 2, comparing it to < 1 means each half gets a different colour.
I think frac(10*wcoord.x) < 0.5 would also be equivalent.

[misty crown]

Thank you!

[tranquil wolf]

here is my sky shader- worth noting I was trying to follow this tutorial: https://medium.com/@jannik_boysen/procedural-skybox-shader-137f6b0cb77c

[regal stag]

It looks like your using a Lit graph so that might affect things. Should probably use an Unlit one. (can change it in Graph Settings)
Can't see anything else that would cause this, unless there's a mistake in the Skybox UV, maybe double check it against the tutorial.

[tranquil wolf]

changing it to unlit worked !!!

thank you so much

[floral canyon]

Does anyone here who has a singular clue as to what a shader is/does/works can help somebody that knows absolutely nothing T o T ! I am currently running into a problem with my first ever unity project and im a little clueless to say the least, and now I am stuck on some shader/lighting issues! Any help will be appreciated :))

[prime shale]

shaders at there most basic are all about putting a color on the screen

there we go, job done 😛

[floral canyon]

thank you for sharing your wisdom wise one 😌

[prime shale]

but on a little more elaborate note shaders are GPU programs, that are solely responsible for shading all the objects that are in your scene

[floral canyon]

Would there be any reason a specific would cause an object to light up entirely, even if only part of a light is touching it?

[prime shale]

yes, but the problem with that question is that it could be due to a multitude of things

[floral canyon]

NooOoO T _ T

[prime shale]

I would ask first what kind of lighting you are using, and what render pipeline

[floral canyon]

I'm not using URP or HDRP so the standard pipeline I assume, and the lights are also standard unity pointlights :/

the shader in question is using some form of vertex lighting if that helps at all 😭

*spot lights not point 😰

[prime shale]

well right off the top of my head

sounds like the issue you might be running into is about per pixel light limit

by default its at 4 usually for built in pipeline but you can increase that number

[floral canyon]

interesting 😌

[prime shale]

you'll find the option on quality settings

[floral canyon]

I gave it a quick try but it didn't seem to resolve the issue unfortunately :/ I greatly appreciate the help though 😄 ! I am sure I'll inevitably get too the bottom of this >:)

[kind juniper]

Take a screenshot of the material

[floral canyon]

sure just one second 🙂

[kind juniper]

Ah, well vertex lit shader would be lit by the vertices. If you want pixel lights working, you'll need to use a different shader.

[floral canyon]

If you have the time, would you try dumbing down the difference between the two :))

[kind juniper]

You'd need to look into the shader code for details, but basically vertex lit shaders apply light in the vertex shade(per mesh vertex that is). Shaders like Standard shader, apply light per pixel drawn on the screen making them quite a bit heavier than vertex lit shaders.

[floral canyon]

I think that makes sense 😄 thank you for explaining it to me 😌 I've learned something today

[kind juniper]

That being said, vertex lit shaders still shouldn't be "lit as a whole" it's supposed to be less precise.

So maybe take a screenshot of how it looks like.

[digital gust]

Is anyone here firm with a shadergraph of water ripples affected by an object? I am currently testing around and can not find the best way of approaching this. Should I feed a texture that is updating the points where ripples are or is there some kind of array I can feed into shadergraph to examine positions I can create ripples from. Any insights and ideas are very welcome, thank you 🙂

[tacit parcel]

I don't think it should be handled by shader(not entirely at least)
what I can think of is using a look up texture, usually a render texture, for the water mesh vertex displacement. then you blit a wave pattern in the object position into the render texture which largen and fades overtime.

[digital gust]

I mean you can posterize and distance to generate ripple basics, but of course only for one object right now. I could just copy it 4 times, but what if I wanted a dynamic array to be used to have multiple ripples. But about your idea, do you have anything I can look into to combine that idea with a pattern of multiple "impact points"?

Like this is already generating an animated wave I could control. But its just one

[tacit parcel]

using render texture, you can have a lot of impact point with minimum impact

[digital gust]

Hm, gotta look into this I guess. trying to understand how to use the rendertexture and add impact points to it, thanks for pointing it out 🙂

This is what it currently does, basically having the effect I want (ignore resolution and blockiness)

[digital gust]

is there a smart way to "lerp" in shadergraph from like a stored position to the new one?

[toxic ore]

How can I control the position of the lighter-coloured rectangle projected on the larger one?

[harsh aspen]

Hello,
I am working on a 2d platform type game,
I wanted to make the texture for the platform look uneven,
No change in colliders needed only the look i want to change to uneven like a uneven rock type thing.
How can i do this. If it is possible

[regal stag]

Adjust the UV coordinates going into the Rectangle node.
Either use UV node and Add some Vector2 offset, or can use a Tiling And Offset node and connect to the Offset port for same effect.

[toxic ore]

Thanks a lot!😃

[ionic oak]

Is this a typo in the documentation for Stencil Buffers, or am I missing something? https://docs.unity3d.com/2023.1/Documentation/Manual/SL-Stencil.html

It should be "zFailOperationBack and zFailOperationFront", right?

[low lichen]

Yes

[gloomy gust]

can someone help me with this pelase?

[toxic ore]

I have a noise node and I want it to act like alpha (so I want the black regions to be transparent and the white regions to be white (and then I'll eventually multiply this by a color)). How can I do that?

[low lichen]

My guess is that you have some global light that is adding a little bit of light to objects in shadow, so they don't become fully transparent. What method are you using to add that bit of light to the shadows?

[dry solar]

Hi, I'm trying to create a Shader for this Planet so that there are different textures on different parts of it. Right now i'm controlling it through Noise but I'd like to texture it based of the height of the terrain so I can have snowy mountain peaks. How could I do that?

[low lichen]

You just need to connect the noise output to the alpha input.

[toxic ore]

Here is the thing: I want the output to be blue where the noise is white and red where the noise is black

[dry solar]

use a gradient with a sample gradient node

[toxic ore]

How exactly? Instead of the color node?

ohh, got it

Thanks!!

[low lichen]

Well, you'll need to calculate a height value. If you have some heightmap texture, you could sample it in this shader. Otherwise, you will have to calculate the distance of each vertex from the center of the planet and then define some min/max range using Remap to convert that to a 0-1 scale.

[dry solar]

oh boy

I do not have a heightmap

[low lichen]

If the pivot point of the mesh is in the center, then to calculate the distance, you can just use the Length of the Object Position.

[dry solar]

I see

It is so I'll try that thanks

[low lichen]

The value you get could be in any range, depending on the size of the mesh (unrelated to the size of the renderer/game object). Maybe you're lucky and it's already between 0-1. But most likely, you will need to Remap it.

[dry solar]

yeah, that it ussually doesent work first try so i'm expecting that

[toxic ore]

For some reason I can't show that gradient from above as a property in the editor

The Expose checkbox is greyed out

[regal stag]

That's somewhat intentional. Gradient objects in shader graph can't be exposed

[regal stag]

For this I'd use two colour nodes/properties, put your noise into the T of a Lerp node, and the colours in A and B

[toxic ore]

Ok, I'll try that

[gloomy gust]

this is the only light source in my level, im pretty certain

i have the shadow strength not fully 1

[toxic ore]

It worked. Thank you!

[low lichen]

Try setting shadow strength to 1, but then use a global light to light up the shadows.

[gloomy gust]

thats done it, but now everything is super bright

do i just do like 0.5 and 0.5?

or just different target layers

[dry solar]

Very cool effect but I think I'm doing something wrong here

[digital gust]

Hey everyone, I am trying to use my vertex displacement to also get some refractino going in shader graph. Anyone got a good way of recalculating the normals from that displacement?

[slim yew]

I have a geometry shader that's used to render grass on a mesh

would there be a reason for it not showing up in the scene view?

and now its not visible in either game or scene view

[tender valve]

Hello guys I copy shader graph code to shader but its give me error and i cant avoid it , what can i do??

[lunar valley]

its a warning not an error and it also tells you how to get rid of it

[regal stag]

I've got a few methods listed here : https://www.cyanilux.com/tutorials/vertex-displacement/#recalculating-normals

[lunar valley]

I would not use geometry shaders for grass there are way more performant methods

[low lichen]

Yes, you'll have to decrease the brightness of the spot light, since it's being combined with the global light. Also, it looks like the global light is too bright. The shadow brightness doesn't match before.

[tender valve]

sorry warning then, but im not tha good yet so i dont know how to get ride of it in graph shader

[low lichen]

You're missing the Length node.

[slim yew]

its not rendering anyway

[lunar valley]

before you plug it into the pow node plug the value into an absolute node

[lunar valley]

cool still I can recommend to render grass differently but if you insist on using geometry nodes

[slim yew]

alright

recommend me away

how would you render grass

[lunar valley]

you will need to give us more info

[gloomy gust]

can i only light specific gameobjects? like can i keep the player under a constant light with one light, and calcuate the shadows and stuff with another light?

[slim yew]

what info, I need to render grass, that sways, and that I can change the color of

[lunar valley]

I would watch a very good gdc talk from the developers of the game ghost of tsushima they have got a very performant solution for grass

[tender valve]

im not actually using literally power node or absolute

[dry solar]

Thank you so mucht! I got it working and it looks great

[lunar valley]

are you sure the error is refering to this shader, but tbh is something not working cause if everything is working as expected it probably doesn't matter

[misty crown]

Hey can someone help me understand as to why TEXCOORD0 is described as 'first texture coordinate input' Does it provide the UV Coordinates for a specific vertex / can a vertex have multiple uv maps?

            `float2 uv : TEXCOORD0 // first texture coordinate input`

Thank you!

[merry rose]

You can do it two ways, either write the height data to vertex color information of the mesh or you can get distance by subtracting position from the object origin position in shader graph

[tepid valve]

ive got this planet in unity 2D and I want an atmosphere around it and it seems that shaders would probably be the best way for it
I can create a mesh in the right shape but i cant figure out how to get it working
the second image is a sort of attempt at getting it working but it just doesnt seem to do what id expect with 2D meshes without sprites or anything

[grizzled bolt]

What kind of UVs does the mesh have?

Could plug UV node into color to see what we're working with

[tepid valve]

yes will give that a go

its possible that im generating the UVs wrong

ah seems theyre all (1,1)?

its got vertex colours also but can just ignore them

the final thing wont have them just while im checking out shaders

[grizzled bolt]

That seems likely

[tepid valve]

uh hm i evidently did not expect to have to use them in the future

nice

i guess the next issue is how on earth do i generate the UVs for an arbitrary polygon - would the edges need to be along the sort of (1,0), (0,1) edges of the UV, or would i just be able to divide vertex position by bounds?

not really a shader question at that point i suppose

[tranquil wolf]

Anyway I can draw clouds using shaders in the built in pipeline? this is my first unity project and every tutorial seems to use another pipeline and Im afraid if I change pipelines it will screw up what I already have

[prime shale]

what kind of clouds?

[tranquil wolf]

Not to be a weeb on main but I really like the clouds in Genshin Impact

[prime shale]

nothing wrong with being a weeb 😛

but just to preface real quick technically you can do whatever on the built in pipeline, the difference with the other render pipelines is most of those features/effects are built in.

I'm not to familiar with genshin impact but looking at images, the sky looks to be heavily artist driven

most likley just simply hand drawn clouds that are overlayed on a skydome mesh that rotates/animates based on weather conditions/time of day etc

[tranquil wolf]

ahhhhhh sweet

hrm. do I want to draw clouds? was kind of hoping to mess around with shaders more

[prime shale]

well there are many ways you can achieve it, I'm not familiar with the game and seen it fully in action but you could certainly achieve it in many different ways

the simplest and fastest way I could think of is having artist textures, but you could achieve it with shaders and procedual textures

https://www.youtube.com/watch?v=xxhvUyvIH6s

not quite the same as the style of genshin of course, but its a starting point

[tranquil wolf]

thanks !!

[lunar valley]

you can also make volumetric clouds but these are more technically challanging

[dusty peak]

How is it possible to import a model with the custom shader too?(Use Nodes enabled and from Blender)

[grizzled bolt]

Shaders are not compatible across engines
But many can be baked to texture maps or recreated in Unity

[dusty peak]

Any package that adds support for Blender Shaders?

[grizzled bolt]

No

[dusty peak]

dam, thx

[modern yacht]

Hey guys, is there anybody familiar with shader graph and can help me with some 'simple' shader which turns out not that simple

The idea is to make a shader that will display a border around the mesh. It should be tilled with object scale.. I managed to did it, but it totally breaks when it comes to custom shape

These are same shader but one is just a rectangle and another is some complex polygon. I'm stuck for 2 days xD [*]

[lunar valley]

its hard to figure out when not knowing about the code

[modern yacht]

It's all done in shader graph. Here it is:

Sorry, this one:

[karmic hatch]

Outlines are, unfortunately, hard. You either have to build it into your mesh (e.g. encoding it with vertex colour) or go through one of a set of fairly complicated procedures to get the outline.

[modern yacht]

I thought the 'inner' outline would be easier to achieve 😔 at this point I might consider if it's possible to split the mesh i want to work on into two parts

[slim yew]

hello again, I'm having trouble using geometry shaders

they won't render at all

[lunar valley]

we can't help you like this

[slim yew]

well its literally not showing up

I tried switching all my render settings, changing around stuff in the shader

inside this project geometry shaders are broken

if I open a new project they're fine

[lunar valley]

whats not showing up

[slim yew]

the geometry that's supposed to be generated by the shader

let me show you

[grizzled bolt]

Hmm I can imagine what a shader looks like when it's not showing up

[slim yew]

oh its just not showing up

just gimme a second to show you what I mean

same models, shaders, textures, unity version, urp version

only difference is the project

[grizzled bolt]

Looks like I imagined it

[slim yew]

I've tried matching project settings, and that also doesn't work

any pointers?

should I just move my assets into a new project

[gloomy gust]

how can i make a trail renderer pixelated with a shader?

[meager pelican]

Try comparing the two in the frame debugger. Or check into RenderDoc.

[slim yew]

I wish I was kidding when I say that it magically fixed it self

[lunar valley]

at least its fixed...

[grand jolt]

anyone knows how i can find in shader's code a function that makes it slowly dissapear pixel by pixel (possibly not literally)
when camera is at a certain distance, or the model is at certain screen height?
this shader is rather big and undocumented so its a bit hard

the reason is, theres a Billboard on last LOD, and it slowly fades to invisibility on a LOD before that

looks super poorly

[meager pelican]

Might be some kind of distance based dither.
So I'd look for dithering functions...like looking up into a table or a texture based on distance and/or screen space location, and then doing either a discard or setting alpha to zero based on the results.

[tepid valve]

someone dm'd me about this but i declined accidentally, if whoever that was messages again ill answer sorry

[regal stag]

Is the foliage here texture based? Under the texture's settings there should be a "mipmaps preserve alpha" which might help with this

[tepid valve]

assuming i got UVs on all the points what can i do next? the UVs are just gotten by diving the vertices by the bounds so (0,0) and (1,1) are not necessarily on the shape

ive just got this applied on the ground itself but the hope was to use it as an atmosphere shader so id just apply it to another shape thats a bit bigge and behind this main one

[tepid valve]

another complication is that im using pixel perfect camera so idk if i have the option of using a render texture and applying a shader to that instead

[regal stag]

Ideally the UVs (or at least one axis of them) would follow the shape, then you could just use that gradient as the falloff/alpha for the atmosphere.

[tepid valve]

yeah exactly, just doesnt seem trivial to do that

im toying with the idea of passing in data into the shader through the normals

i suppose UVs work too

do UVs / nomals normalise the vectors they receive?

data seems to be going missing its not doing what id expect

[regal stag]

You're using shader graph right? That would be normalising normal vectors automatically. But UVs wouldn't be

[tepid valve]

ok ok so UVs are the way to go sure

[gusty canyon]

Guys would it be possible to make a tape measure shader that I can just stretch a small rectangular prism and it extends with the markings on it but also has numbers counting up(this is the part I’m unsure about)

Context: I’m making a VR game and want to add a tape measure that you can pull out

[tepid valve]

do you have a suggestion how to find the distance to the edge of the polygon from inside the polygon? the built in ClosestPoint only works for points outside

[regal stag]

Hmm well, Should be able to get the scale of the object through the model matrix. In shader graph it would be from the Object node. In hlsl should be able to use something like

float scale = length(float3(UNITY_MATRIX_M[0].x, UNITY_MATRIX_M[1].x, UNITY_MATRIX_M[2].x));

Though unsure if you want x, y or z axis as that depends how the object is orientated.
Could use that to scale your uvs (or object space fragment pos). Should be able to get lines/markings by doing something like step(frac(uv.x * scale), 0.05);
Getting it to actually display numbers would be a bit harder though. Maybe instead of doing it procedurally it would be easier to use a long texture. Can still sample it with scaled uv coords. Not sure what it would be off the top of my head though (float2(uv.x / scale, uv.y)?).

[regal stag]

No idea sorry, probably better asked in a coding channel

[tepid valve]

ty anyway tho

think the plan is just loop over all the outside vertices and find the lowest distance from point to each edge

[gusty canyon]

Bro thanks for that in depth response, I’ll have to give it a shot when I get home, had to go get some food

[wooden lake]

Hi I might be off, but is this blue overlay over tilemaps usually done with shaders?

[tepid valve]

yo ty for your help my guy

ofc doesnt look how it will but the datas there

[regal stag]

Yeah 😄

[regal stag]

I mean, everything being rendered is using a shader. But I'd assume these are meshes or quads with a texture.

[gusty canyon]

ive got this so far, how would I make the marks thinner?

[regal stag]

Adjust the In port on the Step node

[gusty canyon]

that just makes one color longer

[gusty canyon]

this would work if I could make them closer (meant to reply to the other one)

[regal stag]

Oh right, you'd want a Multiply before the Fraction node

[gusty canyon]

bro is a math wizard 💀

how could I make the bottom and the sides not have the marks?

[regal stag]

Could use the Normal Vector node (object space). For the top face it'll be pointing upwards (0,1,0) so Split take G output, Comparison (Greater) with a value of 0, into a Branch

Current graph result in True, Color node for sides/bottom in False

[gusty canyon]

bet

also is there an equivalent to this node from blender in shader graph?

found it

sample gradient

[regal stag]

Kinda depends what you intend to do with it. There's a Gradient & Sample Gradient node, though they can't be exposed to the material - only hardcoded.

For just two colours, can use lerp. e.g. https://www.cyanilux.com/tutorials/color-swap/#lerp

[gusty canyon]

im going to use it to make the lines not go all the way across it

I just need to make it yellow now

I dont know what im doing

[regal stag]

So remapping values, in that case I'd use Step (hard cutoff), or Smoothstep, or Inverse Lerp then Saturate. They'd be cheaper than the Sample Gradient.

[gusty canyon]

hey I did it

using step

I dont know how in the world I would ever put numbers on it though

so idk if I am

I might just leave it like that

https://gyazo.com/4f2e2cefe604b4b96ad1d68124a5ff1c.mp4 when you pull it out it just extends, how could I make it look like its coming from the tape measure?

[prime shale]

Could use some kind of number texture sheet

With digits from just 0 to 9

And using vertex positon and some fancy procedural math

[gusty canyon]

that sounds extremely complicated

[hearty obsidian]

@gusty canyon if youre just rescaling, then you can offset based on scale. If youre going to be wrapping this thing around stuff dynamically, and it wont keep a straight line, you probably will need to remap the uvs

[gusty canyon]

nah its not gonna be wrapping around stuff

ill see if I can get the offset to work

[prime shale]

What your making seems complicated, its all procedural so dont really see a better way

But a number sheet I'm sure would be the route to go

Are you using mesh UVs or vertex position for the markers?

[gusty canyon]

this is the entire shader rn

trying to get the offset to work

I dont think im going to add numbers

[regal stag]

Maybe if you subtract 0.5 from the position R, multiply by scale, then add 0.5 again, that might do what you want?

Or maybe 1 rather than 0.5, I'm not sure what the scale of the mesh here is

[gusty canyon]

and plug it in here?

https://gyazo.com/bc0c591192f6c0b8322332faf3775bc2.mp4 didnt quite work out

[regal stag]

Nah, you're multiplying by the scale twice now. Put it into the multiply by 30

[gusty canyon]

its working but its coming out too fast

do I really gotta play with this value until its perfect 💀

0.09217 is pretty good

idk what that number represents

now I gotta actually make it pulloutable

thanks guys

[tepid valve]

yoo kinda snazi ty again for the help

[gusty canyon]

that looks really cool

[tepid valve]

i like the vibe youre going for too my guy

[gusty canyon]

thanks

[dense bane]

Does Unity support texture array compression?

i think they added that in some later version but i don't see it

[prime shale]

<@&502884371011731486> @grand jolt

[desert orbit]

!ban 856146380052627497 spam

[echo moat]

king egg. (Skiku)#6265 was banned

[vale wind]

Question because I can't find it anywhere on google but what are the best practices for making say a low end version of a shader in shadergraph?
Say I have some triplanar mapping stuff going on, could I have a branch that checks if a certain global is true or false to do that triplanar mapping or not and would it save performance by not doing that or does it still have the overhead somehow?

[prime shale]

there isn't too many resources out there for it sadly because the kind of shaders that say a project would need can vary so vastly

but the general guidelines that are said do apply

if you want a low end well performing shader, generally the less computations that you do, the better

[vale wind]

So branching to skip doing triplanar mapping should work?

[prime shale]

hmm I would try to avoid branching honestly and look into shader variants with macros

but your using shadergraph which I don't think supports that...

i might be wrong, not familiar with shader graph, but generally advice for having well performing shaders. Keep the computations as simple as possible

less is better

which is why unlit shaders perform well on mobile, all its doing to shade an object is sample a single color or texture and that is it. you can add additional steps like ok I will sample realtime diffuse lighting. That is an extra step. Ok I will now sample another texture map for normal mapping, that is another step, etc.

[regal stag]

You can set up a Boolean Keyword (or Enum Keyword) in shader graph blackboard (then drag it into the graph and connect On/Off ports) to create variants. Some info here : https://www.cyanilux.com/tutorials/intro-to-shader-graph/#keywords

[vale wind]

Oh cool thanks

Thanks guys

[tender valve]

Hello guys got a bit problem in blender i made tree with UV and Bake textures everything looks good there but when i import to the unity and set all up my textures all are stretched .... they cant find the right place why is this happening?

[vague pilot]

Hey im new to unity so im new to shaders (shader graph) to be honest i watched some videos about making something with shader-graph but there are no explainations why to use the nodes is there any video that shows all the nodes and their functions?

[waxen herald]

Trying to use a material with a custom shader. My project uses URP and has the renderer set in the quality tab in the project settings. I also cant convert the material to an URP material cause it says theres no converter

Anyone knows whats causing this/ what might we the solution

[meager pelican]

Branching will work, particularly if it is branched based on a Uniform (aka constant passed in for all drawing), but I'd check the generated code from shader graph. And like Cyan said, the best way is a shader variant.

That said, triplanar isn't all that bad, GPU wise. You could just try it without any branching options, benchmark it on your lowest target vs doing the other thing, whatever it is.

[meager pelican]

You'll have to rewrite the shader by hand, to be URP compatible.
Cyan has some resources on his site that may help you.

https://www.cyanilux.com/tutorials/urp-shader-code/

Or duplicate the functionality in shader graph.

[waxen herald]

Checking this out for sure, looks really helpful

thanks

[sly tapir]

why does my skybox change the color of everything to a bit of a tint? the original didn't do anything

i dont have any post processing enabled either

[frigid yarrow]

did you change the color of the directional light?

[sly tapir]

nope

its the same as it was

if you wanna test it there it is @frigid yarrow

like i didnt change anything I just applied it

[frigid yarrow]

yeah for some reason changing the skybox effects lighting

not just a thing with this skybox

[sly tapir]

damnit

how can I fix that?

[frigid yarrow]

Under the lighting tab, change the Environment lighting source

change it from skybox to color

[frigid yarrow]

so you can change it to any color you want

[sly tapir]

aight thank you. Do you know what the color is for the original skybox like the one you see when you make a new scene

[velvet turret]

i know there's a way to shade an object to always be rendered on top of other objects regardless of being occluded - is there a way to do the reverse? IE put a shader on an object so it's always occluded by objects on a certain layer, regardless if those objects are behind it?

[frigid yarrow]

its a light blue

[sly tapir]

Something like this i would guess

but ill fiddle with it thanks for the help

also 1 more question regarding shaders

is it possible to make a camera filter/shader that makes it look water?

[frigid yarrow]

I havent done that yet so idk

the cheap and easy way would probably be to simple put a filter over the canvas

[sly tapir]

okay

again thanks for the help and thats all

[scarlet crater]

Posting this again because i can't seem to find a solution on my own:

I'm writing a pointcloud shader using geometry shaders, essentially the goal is to create a billboard quad on each vertex of a mesh and then apply a point texture to each quad.

I'm almost there, the last problem that I am encountering is with the billboard math (?)

The quads seem to shrink pretty significantly whenever the camera is directly above them, which is not ideal

i'm absolutely hopeless with math, so most of the math was sourced from a github example that I found. that makes it really hard for me to diagnose the problem though haha

if anyone has any input i'd be more than happy to hear it!

[meager pelican]

OK, so it's particles, on quads, and you want a billboard shader that always faces the camera. Yes?

[scarlet crater]

essentially yes

[meager pelican]

Google "unity billboard shader" and dig in. There's a few methods.

Mostly applied in the vertex shader. But I suppose you can pre-gen them in the geometry stage too.

Also, I think the BiRP has a billboard shader for particles (probably shuriken), that you could check the source for.

[scarlet crater]

ill do a bit more googling then i suppose!

[meager pelican]

https://forum.unity.com/threads/vertex-shader-question.469815/

https://forum.unity.com/threads/billboard-geometry-shader.169415/
Just some candidates, I ran across just now.

I've done it before, but I don't have my library organized very well to just post the code for ya.

[sleek skiff]

Having some issues with a scriptable render pipeline
currently using the PSX render pipeline and i have a VHS Pro post process effect that i applied to the camera, but it doesn't seem to show
when i switch the render pipeline to none, it shows up
is there any way to get the effect to show with the scriptable render pipeline i have?
The project is a 3D built in render pipeline project

[vocal narwhal]

It sounds like you are using the wrong post processing

https://help.vertx.xyz/graphics/post-processing/render-pipelines

I'm confused what you mean by saying the project is built-in, but you're using a render pipeline

[sleek skiff]

oh i selected the 3D startup project

that's the built in render pipeline right? not URP or HDRP

[vocal narwhal]

That's irrelevant now you're using a RP

[sleek skiff]

oh yeah, this one, the PSX render pipeline

[vocal narwhal]

you're using a custom render pipeline if you've overidden the graphics setting for render pipeline, no longer built-in

[sleek skiff]

ahhh i see ok

i don't see anything to enable post processing on the camera

[vocal narwhal]

I am not familiar with this custom render pipeline's post processing, it might be on automatically

the point is to use volumes and not PPV2

[sleek skiff]

i added the volume thing to the camera, but I only get one group of volume overrides, the one that came with the pipeline

[vocal narwhal]

you will only be able to use effects that are compatible with render pipelines, presumably the one that this custom RP is based on

custom render pipelines are not the most accessible things

[sleek skiff]

hmmm, i see, and there's no way to add other shaders? like the vhs one i got?

[vocal narwhal]

not without writing a whole bunch of custom code, no

[sleek skiff]

dang

[velvet turret]

question - i know there's a way to shade an object to always be rendered on top of other objects regardless of being occluded - is there a way to do the reverse? IE put a shader on an object so it's always occluded by objects on a certain layer, regardless if those objects are behind it?

[frigid yarrow]

So Im having this issue where the cel shader only uses the directional light

https://pastebin.com/ifx4G8SC

How do I make it so that it can use multiple lights?

I can't find a cel shader anywhere that does this

Anyone know how to make a cel shader use multiple lights?

I've been struggling all day trying to figure this out

[lunar valley]

of course it does that you are using _WorldSpaceLightPos0 you will need to put in some more work to make it work with multiple light sources

I can recommend watching the videos from freya holmier, she covers handling multiple lights somewhere

[scarlet pulsar]

any advice how to fix problem in water shader when looking through water plane that transparent object doesn't rendering?

[analog karma]

is there any way to make a noise in shader graph pixelated?

[grizzled bolt]

You can pixelate anything with an UV input using this math

https://www.patrykgalach.com/wp-content/uploads/2020/05/Zrzut-ekranu-2020-05-31-o-18.57.29-1024x503.png

[safe elbow]

How can I get a depth texture from a camera to put into a graph shader?

specifically from a render texture

[calm mortar]

I am using this XOffset variable to control the X UV offset

I'm trying to make it different for each instance, but they all have the same offset. Am I missing something?

The scriptmachine is attached to the object containing the material

[regal stag]

While the property is selected, check it's "Reference" field under the Node Settings (tab of Graph Inspector window). It'll likely be _XOffset, which is the actual name of the property in code.

[calm mortar]

I just found out ! that's the problem indeed, thank you

Hmm changing the value changes it for All active objects having that material

Oh my test reference is incorrect probably

[regal stag]

That may be because you're setting the material asset, not the renderer.material, but I'm not that familiar with visual scripting

[meager pelican]

I suppose you could push it back into the far plane of the camera AFTER you calc the screen space (well, clip space) position in the vertex stage. But you're going to have to understand all that math to pull it off.

[calm mortar]

If anyone ever asks in the future: this is the solution

[calm mortar]

I have this fire material. If I scale my gameobject very wide , it just scales with the game object, but I'd like it to repeat itself. How would I do that?

It's a particle system witha material

materil looks like this

[meager pelican]

Another way, besides doing tricks in the vert stage of the mesh, is to render using stacked cameras.

So you could stack cameras, NOT write to depth, and render the skybox, followed by your forced-background object, into a render texture. That would put a "background" onto your render texture including the skybox and the forced-back object. You'd then render with another camera over top of that background.

This is inefficient, since you'd be overwriting pixels from the skybox later, that you'd normally not have to draw at all.

So the first camera would output to a render texture, draw the entire skybox, and then you'd draw your special object into it. These would set the depth to whatever skybox depth is normally set to, or not even set depth.

The 2nd camera would NOT clear, and would draw the rest of your scene on top of that.

[meager pelican]

https://docs.unity3d.com/Packages/com.unity.shadergraph@6.9/manual/Tiling-And-Offset-Node.html

[grizzled bolt]

If you scale up a mesh, its UVs will scale up with it along with textures you render with those coordinates
You'd have to project the texture in world or object space

[gaunt ridge]

Anyone have any experience with custom srps / rendergraph?

Trying to port a custom srp to rendergraph, and while I have it rendering, I'm having a strange issue with shaders drawn via DOTS/Entity Graphics specific batching not having any problems, but shaders drawn by the SRP Batcher outside DOTS in the same pass have what appears to be a corrupted read from its material properties on half the frames or so,

Not finding a lot of resources/docs on rendergraph, and dissecting the URP/HRP code has been somewhat helpful, but this issues kinda cropped up from nowhere, and I'm having trouble pinpointing why its happening. If anyone has any insight, I would be very appreciative of some direction

[meager pelican]

https://forum.unity.com/threads/projecting-to-the-far-clip-plane.518667/

https://docs.unity3d.com/Manual/SL-UnityShaderVariables.html

[meager pelican]

It's experimental, and it's also part of the lesser-used HDRP.
Once you go HDRP, and get into things like experimental RG, you're going to have to dig in I guess.
Sorry I can't help you. I assume you've seen this already, but just in case: https://docs.unity3d.com/Packages/com.unity.render-pipelines.core@16.0/manual/render-graph-writing-a-render-pipeline.html

[gaunt ridge]

I have seen that bit, but its good to know thats about it for documentation, found a few example projects that have helped as well, wonder if its actually a bug vs just me doing something wrong

[meager pelican]

Yeah, IDK.
The only thing I can (guessing) suggest is a debugger to check the values coming in.
There's the frame debugger, RenderDoc, PIX, but really to fully check it I'd install vendor specific tools for your graphics card and run a debug test. You can capture frames, and mess with values, trace through shader code, etc. Very vendor specific, so see their docs.
Visual Studio has some tools too. But if you REALLY NEED to dig in, the vendor tools are the way to go.

[raw walrus]

I'm trying to get a vignette effect on my shader graph but I can't find any tutorials about it

[gaunt ridge]

Good idea to use vendor shader debuggers, will give that a shot next, a big annoyance is the frame debugger shows the correct vector value being set with the right value for the material even when it’s flipping out in game view

[gaunt ridge]

Fixed it, was 100% my fault, missed '!' negating a #if !defined(LIGHTMAPS_ON) in my shader so it was sampling random gpu memory garbage where the lightprobes should have been,

[slim yew]

is there a way to manually add lighting to a geometry shader

since I can't add both #pragma require geometry and #pragma require surface in the same pass

[gaunt ridge]

Like a screen space one?

[raw walrus]

I got a sniper scope shader, trying to add vignette around the glass

[gaunt ridge]

You should be able to add simple directional lighting (not shadowing) with the built-in shader vars and a normal/worldspace coord in the fragment shader

[raw walrus]

I will send the shader graph later on, I'm afk now

[slim yew]

👍 worked great, used LightingSpecular()

[gaunt ridge]

Funnily enough, I actually haven't really used shadergraph, however for a simple one I was going to suggest just use the distance from the uv maps center point as a progress to lerp from alpha to opaque target color, add in an offset distance if you want it to start sooner/later,

[raw walrus]

I have no idea on how to program shaders

[gaunt ridge]

Gotcha, not quite sure how to translate this into shadergraph, but that is the math concept you would want to use for a simple adjustable one, but depending on the platform it may be cheaper to just have a alpha faded texture that does it instead,

[dusk shell]

Hey, this might be a loaded question but I figure I'll try... I'm trying to use Tilemaps with 3D lights (built-in & deferred). I'm using the Standard shader, which works - except the Color field on the Tilemap component doesn't work. Is there an easy fix for this or a resource anyone could point me to? Anything would be appreciated, thanks!

[slim yew]

what's the best way of applying multiple lights to the same pixel?

I tried doing this c for(int j = 0; j < 15; j++) { const half4 newColor = _AdditionalLightsColor[j]; if(distance(newColor, black) == 0) { break; } const half3 lightDirection = normalize(_AdditionalLightsPosition[j] - vertexInput.positionWS); const half3 viewDirection = normalize(_WorldSpaceCameraPos - vertexInput.positionWS); color = half4(LightingSpecular( newColor, lightDirection, v.normal, viewDirection, color, 0), 0); } but it doesn't work

I assume because I am using lighting specular wrong

[gaunt ridge]

Hmm, do you mean to set the alpha component of 'color' to zero at the end there?

[slim yew]

no but that doesn't change anything really

[gaunt ridge]

My first debug change would make that break into a continue just to see what happens

[slim yew]

oh, I must've switched up what break and continue do

it is supposed to be continue

is the _MainLightColor and _MainLightPosition part of _AdditionalLights?

it is

its index 0

I'm trying to apply attenuation now

[frigid yarrow]

even though it says _WorldSpaceLightPos0 float4 Directional lights: (world space direction, 0). Other lights: (world space position, 1).

Putting a 1 in WorldSpaceLightPos0 just causes an error

so how am I supposed to have a shader support other lights

typing "WorldSpaceLightPos1" doesn't work

And the unity documentation on this command is vague for some reason

[frigid yarrow]

nvm got it to work (kinda)

[frigid yarrow]

I say kinda cause when two lights shine on an object with the shader, this happens

https://pastebin.com/X775ukN9

[gaunt ridge]

I just need to express my deep DEEP existential frustration with trying to handle xr in a custom srp in any conceptual way. Nothing works like it seems it should, the documentation is worse then useless, and the existing "examples" in the urp/hdrp appear to require a team to reverse engineer in a way that is comprehendible.

Seriously, spend 10 minutes figuring out how to get a depth buffer down the the render-graph line from a custom shadow pass, spend 2 weeks rebuilding everything over and over on different hardware and software platforms trying to even get the InstanceMultipler method to work even once ever at all in this universe.

rage

[glacial lotus]

Shader/PBR material to make models look like tabletop miniatures?

I'm trying to create an aesthetic of a tabletop miniature wargame and make the characters look like minis.

I know one trick is to use a Tilt-shift camera, but I'm also trying to make the models look like miniatures from up-close, I suspect it made need some kind of material/texture/shader that looks like close-up acrylic paint or something of that nature?

Anyone has advice for achieving these visuals?

[hearty obsidian]

I am rendering certain objects on top of everything in a custom render pass.

My goal is to have a different shader behaviour depending on what is drawn underneath, at scene depth. Essentially, I want to do X if whatever's being rendered underneath is in a certain layer, Y if it's not.

I guess what I'm really asking for is ; Is there a way for me to have a texture, similar to the scene depth or the opaque texture, with custom data? I could bake the state in the vertex colors or the uvs, if the above is possible. Would appreciate direction in how I could tackle a problem such as this

[acoustic agate]

Hi everyone, I have some issue for projecting a logo on a sail. With a decal shader it works ok as in upper red area, but I need my custom shader which is below to do that as well. Right now, the custom shader doesn't have alpha transparency carried on the sail. If I use below shader:

        half4 tex2DFrontLogo = tex2D(_FrontLogo, uv_FrontLogo);               // Logo to project on sail
        tex2DFrontLogo * = _LogoTint;                                                                     // Giving the logo a tint color
        o.Albedo = tex2DNode85 * tex2D( _SailTexture, uv_SailTexture ).rgb; // Combining the logo and the sail textures

Any idea, how to include the alpha of the logo included in the projection?

[meager pelican]

Is it a binary as you've indicated? In other words "Do X if it's a 1 and Y if it's a 0"?
If so, or even if there's only say 2 or 3 "bits" giving you 2, 4, or 8 possibilities, you can try stencils.

The objects underneath would set the stencil with their own attributes. The final composite draw would go based on that...but it would require multiple passes. One for 0 and another for 1.

This is because stencil operations aren't variables that you send into the frag shader, they are filters for calling or not-calling the frag. So if you need to do two different things, you have two passes, one for each thing.

A completely different way would be to have all your shaders output to an additional render target using MRT. Then you could have a composite pass that reads the resulting render texture for data and make decisions based on that. But ALL your target platforms would have to support MRT, and you'll have to learn how to output to multiple render targets in the frag().

[meager pelican]

Right now, this:
o.Albedo = tex2DNode85 * tex2D( _SailTexture, uv_SailTexture ).rgb; // Combining the logo and the sail textures
Is combining them with a multiply. What it sounds like you want is a blend, not a tint/multiply.

The formula for a traditional alpha blend is
float3 resultColor.rgb = baseColor.rgb * (1-topColor.a) + topColor.rgb * topColor.a;
And the alpha of the result color is 1 if you use a float4 for it. This is also assuming you're not using premultiplied alpha.

[acoustic agate]

Thanks a lot! It worked like a charm 🙂

[meager pelican]

Sounds rough, dude. Sympathy.
Although I have to admit I'm a bit surprised you're going anywhere near HDRP with XR. HDRP is for real high-end rendering, and that's not something most approach in XR, due to the frequent need to render everything twice and the lower resolutions and power of most XR devices. But I don't know your use-case.

[gaunt ridge]

It’s a minimal custom srp from scratch, shaders and all, which is funnily enough the easy part for me, in the end will be a single forward lit pass, and if I can get it working, instanced/multiview stereo support in it,

What’s rough (for me) is trying to figure out what specific incantations need to be done to get the Unity side of the system to work with me, none of these xr or related apis calls in the render context seem to actually do anything, even when returning success values in debugging or on hardware

[meager pelican]

IDK how to capture the exact look you need for the "close up acrylic paint"...but the PBR shaders SHOULD do that for you out of the box, I would think. If it's "just" modeling a material and not some special effect.

Have you tried looking up such things in a material database?
IDK if this is the best one or not, but just for example: https://www.cgchannel.com/2022/08/physically-based-is-an-amazing-database-of-pbr-material-values/

[meager pelican]

You have to enable VR in your project settings, which I'm assuming you've done: https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@16.0/manual/VR-Overview.html. It is designed to use single-pass instanced mode from how it reads (you probably know all this, new to me).

There's an interesting chat about HDRP and VR here, it's 1.5 years old though:
https://forum.unity.com/threads/tips-for-hdrp-vr.1147205/
It includes a video where someone pulled it off, albeit a bit slow.

I edited that 1st link above too.

GTG, AFK, heading out to work. Good luck 🙂 Sorry to bail, BBL.

[gaunt ridge]

I appreciate the effort, I do have XR support enabled in my project settings, just more venting at the lack of docs and feedback mechanisms within Unity itself

[meager pelican]

Did you see that function call you have to make to init stuff?

{
    UnityEngine.Rendering.TextureXR.maxViews = 2;
}```

What caught my attention was when you said "none of these xr or related apis calls in the render context seem to actually do anything, even when returning success values in debugging or on hardware", sounds like something isn't initialized.

[sacred stratus]

would writing your own shader inside a compute shader be much slower?

[rare wren]

What do you mean? What do you want to do?

[sacred stratus]

I wanted to make my own svg type format and because normal shaders make no sense to be I thought it would be easyer to write the whole math inside a compute shader instead

[slim yew]

OMG, I HAVE BEEN FIGHTING WITH THE SAME BS FOR THREE DAYS NOW

but in urp

no documentation what so fucking ever

[rare wren]

And then output to a texture or something? Why doesn't a normal shader work?

[sacred stratus]

it's just easyer with computeshader

computeshader works buffer in buffer out, normal shader is like you give some imput and don't know what happens

[rare wren]

But might be more efficient since you can directly draw the SVGs. Compute shader might be faster than regular C#, but might not be faster than the job system with burst, but not sure.
For performance the only way to know for sure is to try

Or see how other svg systems work. Unity also supports them afaik

[sacred stratus]

I don t think that svgs are being calculated on the cpu at all
I think how it works is you have a screensize and for each pixel it checks weather the pixel is on the line

Like it s all on gpu
You send lines, colors in and you get out an image

[slim yew]

doesn't unity just compress it all to raster?

even already raster images?

[sacred stratus]

No I think unity is able to display raster svg images

[slim yew]

is there a way that I can frustum cull a geometry shader using the direction of the generated vertex and the camera?

I'm trying to think of how but I can't really figure it out

[grizzled bolt]

Unly using Vector Graphics package's generic API, I believe

[slim yew]

float3 pos = input[0].vertex.xyz;
if (dot(_Camera_Direction, _WorldSpaceCameraPos - pos) > _CameraFrustumAngle)
{
  return;
}```

does this make sense or am I doing something wrong?

_CameraFrustumAngle is manually inputed

[slim yew]

well after some experimenting in C#, the dot between the camera direction and the direction from the object to the camera is some value between -1..1

and depending on the FOV the object must be visible if the dot is more than 0.4 for an FOV of 80

but this does nothing to performance

even when fully looking away from the object, and increasing vertex count, the fps drops

[hallow plover]

how do you get the direction of the main directional light source in scene in shader graph?

[slim yew]

world space position - main light space position normalized

[grizzled bolt]

https://docs.unity3d.com/Packages/com.unity.shadergraph@13.1/manual/Main-Light-Direction-Node.html
New versions have this, otherwise you need a custom node

[slim yew]

this is the result I get

you can see at the right bottom a grass blade popping in and out

[hallow plover]

which versions are supposed to have this node?

[slim yew]

2022.1 and newer

[lunar valley]

the dot product of this would be always -1

what you are doing doesn't make sense

[slim yew]

no it isn't

[lunar valley]

nevermind that lol thinking error

[lunar valley]

is the culling even happening tho like make the threshold smaller

[slim yew]

it is happening

but it has 0 effect on actual performance

[slim yew]

made the thing in desmos

https://www.desmos.com/calculator/vzxtrzhjwp

green is camera, purple is camera direction, black is object you're trying to look at

[rocky quarry]

how can i make invisible cube mesh that will hide all meshes inside it but not behind it

[grizzled bolt]

https://stackoverflow.com/questions/58230945/cross-section-shader-for-box-bounding-using-amplify-shader

[digital gust]

So, from thoughtful research and the simplest tutorials, I tried to get some refraction going, but somehow, my shader wont accept it/show it. Anyone got an idea? The opaque and depth texture is also set in the renderer pipeline

[regal stag]

What's the RefractStrength value set to on the material?