archived-shaders

[sly breach]

spriteshapes ?

tiling looks simpler https://community.playstarbound.com/threads/waterfall-tilesheet-w-animation.132102/

ah i see , didn't know what sprite shape is

[leaden radish]

making tiles as in art is not simpler

u draw?

made tiles sets?

i make the art 😄

n i will tell you making tiles are huge pain

[sly breach]

most likely u will need to make your own sprite shape renderer - or you can make a custom shader for the fill material and give it a mask texture for where to animate the water

either way it sound like it will take much longer then using tiles

or actually just add another layer on top

u can sort 2d sprites in the Z axis

draw water on a separate layer and give it a custom shader

u can use this [ https://www.youtube.com/watch?v=jBmBb-je4Lg ] it looks like it will do fine in 2d as well

[leaden radish]

i love that channel

i am learning from him actually this shader and all that

he is the best for vfx and shaders

[wet geode]

https://gyazo.com/f91b6b26f3b41401a5e34908fe64f306 how do i get around this weirdness?

This is URP Lit shader

[vocal narwhal]

Use a Transparent Cutout material

[wet geode]

Hey vertx! Thanks, but i already figured it out 😎

[sly breach]

how to use view direction to make a hole in the texture ?

[eager folio]

@sly breach can you be more specific? What are you trying to do?

[sly breach]

given a direction angle i want to cut a whole inside a spheres

was thinking that making a whole in the texture and setting the alpha would do the trick*

[sly breach]

so something like this

but when i apply this to a material its broken

ah nvm , the UV's are bad

here is what it should look like with valid uv's

[sly breach]

tried Fresnel to get that smooth blur - but the results seem to be off

the nodes

[marsh merlin]

How can I disintegrate a custom mesh? I am using these nodes to step through a random noise and plugging the result into the alpha. On a normal object like a cube or sphere, it would dissolve the object as intended. On my custom mesh though, it simply does nothing.

[sly breach]

your object must be broke

try see if there are any UV's or not

[marsh merlin]

How do I make a UV? I just made a model with primitives in Wings 3D.

[sly breach]

that would be best to ask somewhere relevant to Wings-3D

i know in blender its fairly simple , and there are quite a few tutorials on YT

[marsh merlin]

My computer can't run Blender.

[karmic delta]

Hey folks, I'm trying to find a simple way to swap colors for a sprite (not the entire sprite color, but specific parts so that they can change skin color, clothes, etc.)

Found this tutorial which is the closest thing I can find but it references project files that are no longer accessible.

https://gamedevelopment.tutsplus.com/tutorials/how-to-use-a-shader-to-dynamically-swap-a-sprites-colors--cms-25129

It mentions this specifically:

"We'll implement this idea by modifying an existing sprite shader. Since the demo project is made in Unity, I'll use the default Unity sprite shader.

All the default shader does (that is relevant to this tutorial) is sample the color from the main texture atlas and multiply that color by a vertex color to change the tint. The resulting color is then multiplied by the alpha, to make the sprite darker at lower opacities."

Can I locate this myself somewhere in the project? I tried creating an Unlit Shader but it didn't seem to work correctly. Any guidance here is appreciated.

Or if there are any alternative methods that people can recommend, would love to hear those as well

[smoky bridge]

how do we deal with trails that are directed directly at camera and looking like this?

[grand jolt]

Does anyone know how to convert a shader from ShaderToy to Unity?

I followed this video, but haven't gotten the result I wanted since I just got started today
https://www.youtube.com/watch?v=CzORVWFvZ28&ab_channel=TheArtofCode

https://www.shadertoy.com/view/wdjSRc#
the Shadertoy I have been trying to get working

This is what happens when I tried to get it working myself

Tried to get it working, but I don't know what is wrong with it

I heard about static, but I tried it and feels like its not fixing anything before I just remake another one

[stone ibex]

i would try returning the different variables in both your unity shader and the shadertoy to work out what's different

[patent pilot]

Hi! I haven't really done anything with shaders before and just been using the standard shader and materials in previous projects, so I don't fully yet understand what's possible to do, but here it goes:
I have created a model in Blender that I wish to use in my Unity project. In Blender I am using a mix shader to transition from one material to another as seen in the picture - dirt ground to stone wall. I was wondering if it's possible to recreate this in Unity using Shader Graph, and if it is - if anyone could point me to some resources on how to blend two materials like this? I'm on 2020.2.4 btw and using URP for this project.

[mental bone]

Do you need the blend to be procedural and adjustable via a mask or not?

[karmic delta]

Any recommendations on how I could convert this to a material that I can apply to single sprites rather than an image effect?

using UnityEngine;

[ExecuteInEditMode]
public class PaletteSwapMatrix : MonoBehaviour
{
    public Color Color0;
    public Color Color1;
    public Color Color2;
    public Color Color3;

    Material _mat;

    void OnEnable() {
        Shader shader = Shader.Find("Hidden/PaletteSwapMatrix");
        if (_mat == null) _mat = new Material(shader);
    }

    void OnDisable() {
        if (_mat != null) DestroyImmediate(_mat);
    }

    void OnRenderImage(RenderTexture src, RenderTexture dst) {
        _mat.SetMatrix("_ColorMatrix", ColorMatrix);
        Graphics.Blit(src, dst, _mat);
    }

    Matrix4x4 ColorMatrix {
        get
        {
            Matrix4x4 mat = new Matrix4x4();
            mat.SetRow(0, ColorToVec(Color0));
            mat.SetRow(1, ColorToVec(Color1));
            mat.SetRow(2, ColorToVec(Color2));
            mat.SetRow(3, ColorToVec(Color3));
            return mat;
        }
    }

    Vector4 ColorToVec(Color color) {
        return new Vector4(color.r, color.g, color.b, color.a);
    }
}

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

Shader "Hidden/PaletteSwapMatrix"
{
    Properties 
    {
    _MainTex ("Texture", 2D) = "white" {}
    }
    SubShader
    { 
    Cull Off ZWrite Off ZTest Always

        Pass
    {
        CGPROGRAM
        #pragma vertex vert
        #pragma fragment frag
            
        #include "UnityCG.cginc"

            struct appdata
        {
        float4 vertex : POSITION;
        float2 uv : TEXCOORD0;
        };

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

        v2f vert (appdata v)
        {
        v2f o;
        o.vertex = UnityObjectToClipPos(v.vertex);
        o.uv = v.uv;
        return o;
        }
            
          sampler2D _MainTex;
        half4x4 _ColorMatrix;

        fixed4 frag (v2f i) : SV_Target
        {
        fixed x = tex2D(_MainTex, i.uv).r;
        return _ColorMatrix[x * 3];
        }

        ENDCG
    }
    }
}

Here's the shader itself. Sorry for the wall of text

[patent pilot]

If possible, but nothing really is a requirement.

[low lichen]

I'd start by finding a sprite shader you want to use as the base. Sprite shaders are usually pretty simple, but the default sprite shader has some special features.

[karmic delta]

@low lichen Makes sense.. Though finding a sprite shader so far has been tricky for some reason

Perhaps I'm not looking in the right places

[low lichen]

All the built-in shaders are hosted here
https://github.com/TwoTailsGames/Unity-Built-in-Shaders

The default sprite shader is here
https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Sprites-Default.shader

[karmic delta]

@low lichen Awesome, thank you. I guess the big question for me is in the script that has OnRenderImage, would I replace that function with a material equivalent? Or would I just remove it entirely because it doesn't apply in this situation?

[low lichen]

@karmic delta You wouldn't need it, you would just need the shader and use that shader on the sprites you want

[karmic delta]

Gotcha. I think the script is mainly to choose the colors being used but I'll mess around with it tomorrow and see how it turns out. Appreciate the assistance.

[civic sphinx]

Hey guys,

Any ideas how I can fix holes in a vertex displacement shader in shader graph?

[amber saffron]

Fix : don't make holes

[unique pumice]

Im trying to get the Darken Layer Mode and found this https://github.com/penandlim/JL-s-Unity-Blend-Modes but im having some trouble understanding how to use it

whats its supposed to look like

[amber saffron]

Sorry if it seems dumb, but that's the bare truth. When displacing, the only way to not have holes, is to not make them. Usually, you have holes because you're displacing along normals, and your mesh has edge seams : avoid edge seams or don't displace along normals.

[unique pumice]

what it looks like atm

i know very little about shaders so im prob doing something wrong :c

[amber saffron]

Are you using HDRP/URP or the built-in renderer ?

[unique pumice]

i believe urp

how do i check?

[amber saffron]

Look if there is something assigned in "render pipeline" in the graphics sections of the project settings

[unique pumice]

i think so

[amber saffron]

Yep, so those shaders use a feature that is no longer supported with the new render pipelines to achieve the blending effect.

[unique pumice]

............

darn, is there anything I can do to upgrade them

[amber saffron]

No

[unique pumice]

or even a way to make my own darken shader?

[amber saffron]

It's wouldn't work the same

But why don't you "bake" the final color of the sprites/images in photoshop instead of relying on real time blending ?

[unique pumice]

the background animates

im big sad haha

[sly breach]

can we view build in sub graphs ?

[amber saffron]

I think so. But all nodes are not subgraphs

[amber saffron]

Well, if it's only on on of the objects (the menu block ?), you could do the same with shadergraph. Use the scene color node and the blend node

But it won't work if you try to stack multiple objects with the complex blend mode.

[sly breach]

view docs : Out = pow((1.0 - saturate(dot(normalize(Normal), normalize(ViewDir)))), Power);

[unique pumice]

so something like this wouldnt work?

with the balls being a particle efffect

only the menu block/ bottons have the layer effect

the balls / bgm are normal

[amber saffron]

You could also use the blending mode of the unlit shader when set to transparent : https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@10.4/manual/unlit-shader.html

[sly breach]

what does saturate( ... ) do ?

[amber saffron]

It's like clamp, but between 0 and 1

[sly breach]

doesn't clamp can also do the same ?

clamp( value , 0, 1 )

so its similar to Mathf.Clamp01( ... ) ?

[amber saffron]

Yes

https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-saturate

[sly breach]

interesting choice of function naming

thanks

[unique pumice]

im not sure what that means, im a real noob atm. Ill try the shader graph rn tho

[sly breach]

@amber saffron sorry to bug u, but can u look at my question above ? #archived-shaders message

[amber saffron]

What is the issue there ? With the disk mask ? You've answered yourself that with proper UVs it works. Is it about the fresnel ?

[sly breach]

i want to have a smooth step without seeing those quads

https://cdn.discordapp.com/attachments/497874081329184799/823348916882767902/unknown.png

[amber saffron]

Does this object have smooth normals between the polygons ?

[unique pumice]

it this more or less the right track? Im not sure what to put for the other texture

is it possible to take whatever material its assigned to?

[sly breach]

i don't think it does , just flipped normal's of a sphere in blender - gonna check out what are smooth normals in blender

[amber saffron]

That's probably the issue then, if the normals are not smooth, the fresnel will look blocky

[amber saffron]

Yes, right track 🙂
The master node needs to be set to transparent, and you need to add a texture property with reference name _MainTex to retrieve the sprite's texture. Sample it and plug it in the second entry of the blend node.

[unique pumice]

ty so much for helping me , i believe i set the master node to transparent (from opaque in the settings of it) i dont know how to add a texture property

nor how to sample it

[amber saffron]

Look at the property pannel on the left.
And search for "Sample Texture 2D" node

[unique pumice]

?

oh wait is this it?

[amber saffron]

Yep, should be good.

[unique pumice]

ok dope, so I just make that a material and assign it to the menu thing

[amber saffron]

Also, enable "opaque texture" in the renderpipeline asset : https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@10.4/manual/universalrp-asset.html

[unique pumice]

oh nu

what did I do wrong?

[willow egret]

why can't i make pbr graphs in unity 2020.3.0f1

[amber saffron]

The master nodes have changed to the "master stack" in this version. You cen configure multiple outputs for the shadergraph in the graph inspector (top right) window

[amber saffron]

Don't forget to connect the A (alpha => transparency) from the sample node tot the alpha output.
Are you sure you've enabled the "opaque texture" on the good URP asset (there are multiple ones in the template project)

[willow egret]

So say I wanted to make a node into a PBR shader< would I just use a blank shader graph?

[amber saffron]

iirc, the name is "URP/Lit"

[unique pumice]

?

[amber saffron]

Is this the asset that is assigned in the graphic settings, and/or in the current used quality level ?

[unique pumice]

i think i did the connect the A to transparency (prob not) and I didnt install the urp so I dont know anything about it, but i think this is the right one to do

[unique pumice]

I have no idea

also is that what you ment by connect the alpha to the output?

[amber saffron]

yes

[unique pumice]

when i click on urp in the project settings that is where it sends me to

[amber saffron]

Also check in the quality settings. It is possible to assign a different asset for each quality level, and it will overide the one of the graphic settings

[unique pumice]

oh ok

so it wasnt using the urp

but I selected the same one i think

still black tho

[amber saffron]

You did click on "save" in the shadergraph window ? The shader will only compile if you do this.
Else, I don't see what is missing on top of my head.

[unique pumice]

.... i did not

its still not the desired effect im afraid

but its visible this time

wait I just realised the scene background is like the sunset thing

and not the purple image

im bad at this lol

[glass jasper]

Does someone understand, what's causing the pixel inaccuracies?

the right sprite is using my MaskTintShader

and this is my player and mask sprite

[glass jasper]

as you can see the right sprite has weird outlines and pixel accuracies at some places

[merry plover]

Just think about the colors as values between 0-1 in every channel.

And then regular multiplication.

[glass jasper]

oh wait

I just removed one Multiply Node

the mid one was causing weird double multiplier

thats why the dark parts of the hood were way too dark

[merry plover]

👍

[glass jasper]

fixed almost all of the issues

[merry plover]

Nice job. 🙂

[glass jasper]

this is still an issue tho

the places where the mask ends has such white pixels

[merry plover]

That could be your import settings having to be Point.

[glass jasper]

just for the mask?

[merry plover]

For both I think.

[glass jasper]

if I have all my sprites set to point everything is pixelated

really odd

[merry plover]

Hmmm.

[glass jasper]

since its vector art and it stands and falls with AA

even though I didnt get AA to really work yet

[merry plover]

It's not really Vector art when it's imported to Unity.

[glass jasper]

without filter for scaling its odd

[glass jasper]

yea

but unity still does a bit of filtering which makes it look more high res

[merry plover]

Mhm.

[glass jasper]

point is just for pixel art iirc

[merry plover]

It is.

[glass jasper]

hmm

[unique pumice]

after testing it, it seems to work fine, just ignores the purple image and blends with the true background. But because there isnt a true background the game scene just appears as normal

[merry plover]

That's basically what Unity does when importing your asset when it's not point. And if it's different images you might imagine it decides on different pixels to get tesselated etc, in more complex pixel grids.

But yeah, that said..

I don't really know the solution here. You'll have to google-fu it out.

[glass jasper]

yea

[merry plover]

Or maybe some shader wiz-kids can help.

But Google is probably your best bet.

[glass jasper]

I just found out, that I can only tweak hue and saturation

the value is untweakable

gotta figure out a different tint path

[merry plover]

Multiply the mask value by another float value.

[merry plover]

Which is your "Value"

[glass jasper]

I meant HSV

[merry plover]

Aha.

[glass jasper]

if the value goes any lower than 100 it almost instantly causes the darker parts of the hood to turn black

I guess since it already is a bit grey, so it multiplies it all the way up

[merry plover]

That's right. 🙂

If you want to tint different parts different colors, you have to have different masks per piece.

[glass jasper]

but I want to tint the whole hood in one color

just a bit darker variation at some parts

[glass jasper]

Id have to add a Branch Node I guess?

oh well its a connected sprite

yea no

the only way is to make the whole hood white and use two masks I guess

[merry plover]

Yeah, if it's white you'll be setting the color instead of tinting, which is a lot easier.

Ah.

Your "Outline" is brown, no?

[glass jasper]

then Id need to have a different mask for every color shade

[merry plover]

Instead of black.

[glass jasper]

black

[merry plover]

Okie.

[glass jasper]

I wanted to make a mask for hair and hood maybe

so now I need 5 masks

[merry plover]

The darker parts should just have a darker value of whatever tint you multiplied by.

[glass jasper]

just for 2 parts with the same color (just in different shades)

[merry plover]

If it's grey like..

0.2,0.2,0.2

[glass jasper]

I heard Texture Sampling is bad for performance

[merry plover]

Ugh whatever.

It's a game engine. 😛

[glass jasper]

so I dont think 5 Texture Samples for 2 tints is that good

[merry plover]

You can't really make performance judgments in a vacuum like that.

It depends on the context: Are you going to have a lot of these sprites?

Like.. Hundreds?

[glass jasper]

yea but to achieve this I'd need 2 masks for the clothes

[merry plover]

If you have a game with 1 sprite, and 100 texture samples.

It doesn't matter.

[glass jasper]

yea I get your point

idk how often I am going to use this yet tho

[merry plover]

We're not working with 1KB of memory anymore fortunately. 😉

[glass jasper]

I guess I can change up things later if I am going to use it quite often

so I need 2 masks?

[merry plover]

Well, not really..?

You're saying your issue is..

If you put the value at say.. 0.8.

Your dark grey parts, that are of value 0.2 get too dark?

[glass jasper]

black yes

[merry plover]

It should be 80% of 0.2

So 0.16

[glass jasper]

what should be 80& of 0.2

the tint or the player sprites grey

[merry plover]

If you have.. 100% green.

[glass jasper]

ohh

[merry plover]

And you multiply that by your sprite's color. Which in that part is grey.

[glass jasper]

I get your point

[merry plover]

It'll be 0.2 green.

Because it's 0.2 grey.

[glass jasper]

so for the darker stuff Im only applying 80% of the tints color

[merry plover]

Yeah.

[glass jasper]

so it doesnt multiply a dark color with something dark

[merry plover]

Just think about them as floats that are multiplied together.

And think of the value it ends up with.

It's easier that way.

[glass jasper]

the subtract node is causing the white pixel inaccuracies btw

[merry plover]

What you are doing is you are multiplying a value, 0.2,0.2,0.2 by like.. 1,0,0 for RED. right.

So you're multiplying the first 0.2 by 1.. So that's .. 0.2

Then the other two by 0.

So those will be 0.

You end up with 0.2,0,0.

[glass jasper]

yea

[merry plover]

So a little bit green.

[glass jasper]

for white that's no issue, but for something which is already colored..

[merry plover]

Yeah that gets funky.

You should be using greyscale for the parts of your sprite you want to tint.

[glass jasper]

I thought I am?

[merry plover]

You're sending me mixed messages then.

😛

[glass jasper]

yea but its colored grey

[merry plover]

Yeah that's fine.

Again.

0.2 * 0.5 = 0.1

[glass jasper]

thats what I meant. my bad

[glass jasper]

yea

so I need to tweak the tint color value?

before multiplying it

its cuz Im using add

[merry plover]

Haha, yeah. 😛

My goal is just to get you to really internalize what's happening to your values.

That way you can debug your stuff yourself.

[glass jasper]

yea I see

having the add set to multiply doesnt work tho

[merry plover]

Go through it step by step in your head, imagine what's happening to your values.

Fiddling around with multiplication orders and stuff randomly is a fools game. 😄

[glass jasper]

is there an opposite to subtracting

like only using the overlapping parts

[merry plover]

Adding..

Only using overlapping parts?

[glass jasper]

everything which is on the mask

[merry plover]

That's what the mask multiplication does.

Value is 0 where it's black.

1 where it's white.

[glass jasper]

yea now the multiply part looks fine

[merry plover]

Mask * ColorTint * SpriteColor

[glass jasper]

but

this part is perfect

[merry plover]

Great.

[glass jasper]

this part isnt

[merry plover]

Yeah I don't know what you're trying to achieve there.

[glass jasper]

Im not understanding it anymore either 😛

lemme rethink this

[merry plover]

Yeah, always just go through it step by step and have a clear image of what you want to achieve.

When you go into like a "Try random shit" mode, you're just gonna get lost and frustrated.

[glass jasper]

so

I cant just add the whole sprite

cuz then I get rid of the mask

[merry plover]

Simplify the issue.

[glass jasper]

since its just putting the sprite over the masked out, painted part

[merry plover]

What happens to a single pixel.

When you add say..

0.8 to 1

[glass jasper]

then I get something bigger than 1

[merry plover]

And that's not correct, is it?

[glass jasper]

no

[merry plover]

So you don't want to add, do you?

😛

[glass jasper]

combine? Oo

[merry plover]

You have a color, right?

[glass jasper]

yes

[merry plover]

And you want to apply that color to your sprint.

Sprite*

Just think about getting that done first.

[glass jasper]

thats.what Im doing

the hood looks great

[merry plover]

Ok, cool. Now you have this black stuff that you want to use as alpha.

[glass jasper]

I just have to bring the non tinted, masked out and masked out stuff together again

[merry plover]

If you subtract by the color, then you subtract the white.

So that's not correct.

You want to subtract the black.

[glass jasper]

so by the alpha

[merry plover]

Well your sprite MASK doesn't have an alpha.

It just has black and white.

[glass jasper]

yea..

[merry plover]

So how do you flip your mask?

[glass jasper]

thats what I need to do the whole time

by inverting the black?

[faint needle]

Is there any way I can clamp this so the effect fades out near the edges? I tried blending a mask on top but when I convert the data into Normal using Height from Normal, it doesn't take the mask into account for some reason.

The setup to produce the rings look like this

[glass jasper]

there is something called Invert Colors

[merry plover]

😛

So..

Just first of all, if you have a value that's between 0-1

[glass jasper]

wouldnt the One Minus node work?

[merry plover]

Yeah!

That's it.

That's what I was trying to hint at.

[glass jasper]

ohh

[merry plover]

But yeah, you want to have a texture that has an alpha where the black is your alpha.

Then multiply that texture with your sprite's texture.

[glass jasper]

so I dont need subtract at all lol

[merry plover]

You actually don't need to, nope.

[glass jasper]

oh no..

[merry plover]

Working as intended.

[glass jasper]

yea

the places where the mask ends has those inaccuracies

woop tho

[merry plover]

Nice.

[glass jasper]

thats odd tho

like a second outline

[merry plover]

The white outlines?

[glass jasper]

yea

[merry plover]

It's not that odd.

[glass jasper]

ik the Tesselation is what's causing it

[merry plover]

This value is 1.

[glass jasper]

yea

it needs to be 0

[merry plover]

Well I just generally hate Unity's texture system. It's just bad.

But yeah. 😛

[glass jasper]

: \

[merry plover]

But actually.

How did you make your mask?

Did you just marque-select and invert and delete?

Because that'll be quite inaccurate anyway.

[glass jasper]

I took the parts I want to tint, colored em all white and deleted the rest

[merry plover]

With illustrator?

What tool did you use.

[glass jasper]

Affinity Designer

Works like Adobe Illustrator tho

[merry plover]

Okays. 🙂

[glass jasper]

my first two shaders

[glass jasper]

would you do it differently to prevent such white outlines?

[merry plover]

I'm not sure.

My sprites are pixel art.

When I do make sprites.

[glass jasper]

I see

[glass jasper]

this is for whenever you hit the tree to harvest it

but besides the small white outlines it turned out amazing!

thank you for your time and patience 🙂

my first day of using Shaders

just read about it a bit before

[merry plover]

Try to set these.

[glass jasper]

I set the color format, so there is no compression to set

and max size is set as high as the sprite is big

all sprites are a multiple of 4

[merry plover]

Just try to set your filtering to point to see if that fixes your issue.

Though your art probably has tessellation built in.

Put point on both your sprite and your mask.

[glass jasper]

it doesnt fix my issue

thats a good sign isnt it?

[merry plover]

I still see tessellation. So your art has it built in.

Which is causing inaccuracies.

[glass jasper]

oof

so Id have to disable it in my art program?

[merry plover]

See how those aren't perfect angles?

The edges are fading out.

[glass jasper]

yea

[merry plover]

Yeah, you can just try that for now.

[glass jasper]

thats what's causing me A LOT of issues

not just for this shader

[merry plover]

If you can export with point.

[glass jasper]

it would fix it?

[merry plover]

Well, that means you'll definitely have a 1-1 mapping between your mask and your sprite.

[glass jasper]

there is no Point :/

[merry plover]

Nearest Neighbour

[glass jasper]

and I set the filter to point in unity?

[merry plover]

I guess. o.O

Yeah.

[merry plover]

Just inspect your sprite after export.

[glass jasper]

this is what nearest neighbour looks like

[merry plover]

:\

[glass jasper]

yea :/

[merry plover]

Well that's quite shite.

[glass jasper]

. _ .

[merry plover]

I don't work with vector software, so I'm not sure how you set it to not smooth your edges.

So.. Google that I guess.

[sly breach]

I think i fixed the normals but im having trouble controlling the radius of the effect proportional to the screen height , here is the effect at scale 3

and here is the same effect with the same shader parameters at scale 10

( where scale is the transform of the 3d model )

[grand jolt]

return what?

[sly breach]

its basically 2 shader values that stay the same ( pow is the node input , strength is the output multiplayer )

[sly breach]

it seems that no matter the scale value nor the power values there always will be some an anomaly at the origin ... not sure what is going on

placing the camera directly in the middle of the sphere will always have this massive gap and won't render anything no matter how large is the pow

[amber saffron]

It's hard to find the message again, but can you post the current state of the graph ?

[lean lotus]

if this is the wrong place to ask this, lemme know and ill remove it, but is there anything online that can show me how to store parts of a mesh into an octree as data? I am trying to make an octree, but I cant figure out for the life of me how to store the meshes data in it as well(coded in C#)
I also want to be able to send it all to a compute shader to accellerate my ray tracing cuz rn it runs very very badly(custom)

[sly breach]

i have a modified fresnel node that i feed to the shader alpha value , but the default fresnel has the exact same issue , i think its due to the spherical shape of the object and the dot product of the normals ( ? )

[amber saffron]

I wonder what's happening here. Maybe a float precision issue 🤔

[sly breach]

don't think so , but ill try changing all the nodes to half or single , here is another clip of what seems to be off - the closer the camera is to the center of the sphere the bigger the hole , note that the grid stays the same size

[sly breach]

i fixed it , the normal vector needed to be of a tangent space

woop

[amber saffron]

So, you wanted a "round" mask at the center of the screen ?

[sly breach]

yea lol

[amber saffron]

Why not simply using screen space coordinates and draw a disk then ?

[sly breach]

because in VR static overlays are bad

if u move your head around inside this sphere - spacial awareness will be preserved

plus i also have a cool way for making cockpits 💯

[amber saffron]

okay

[lean lotus]

Are there any resources or anything that I can look at for examples as to how to store mesh data in an octree or construct a different BVH and store mesh data in it in C#, to then pass to a compute shader? I am trying to accellerate a ray tracer but I am struggling with accelleration structure implementation and sending it to the compute shader
If this doesnt belong here, tell me and ill remove it

[sly breach]

+1

[rustic thistle]

Hey guys, small question. Is there a way to tell the shader after 2500 renderqueue to draw on the _CameraOpaqueTexture?

[karmic delta]

Shader "Sprites/PaletteSwap"
{
    Properties
    {
        _MainTex ("Sprite Texture", 2D) = "white" {}
    }

    SubShader
    {
        Cull Off
        ZWrite Off
        ZTest Always

        Pass
        {
        CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma target 2.0
            #include "UnitySprites.cginc"

            struct appdata
            {
              float4 vertex : POSITION;
              float2 uv : TEXCOORD0;
            };

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

            v2f vert (appdata v)
            {
              v2f o;
              o.vertex = UnityObjectToClipPos(v.vertex);
              o.uv = v.uv;
              return o;
            }
            
            sampler2D _MainTex;
            half4x4 _ColorMatrix;

            fixed4 frag (v2f i) : SV_Target
            {
              fixed x = tex2D(_MainTex, i.uv).r;
              return _ColorMatrix[x * 3];
            }
        ENDCG
        }
    }
}

Can anyone tell me why I'm getting a "redefinition of 'v2f'" error?

[regal stag]

If you look at the source code for UnitySprites.cginc, it already contains a struct named v2f. https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/CGIncludes/UnitySprites.cginc (line41)
Either use theirs, or rename your one to something else, or if you don't need the include, remove it.

[loud remnant]

I want to outline my teleportable area mesh. How can I do that? I'm using a shader graph

[brisk prism]

Guys, when can i buy amplify shader with a discount ?

[mild terrace]

so im using this asset in my project(which i recently upgraded to urp) but the grass turns out to be invisible when i use it or view it in its folder

things I tried: upgraded materials to urp

reimported them once

but the grass is still invisible

[merry rose]

When you move to urp, shaders have to be made in hlsl or shader graph, standard built in cginc won't cut it

[livid island]

Hey guys, anyone has any insights why I could be getting these weird transparent squares pattern in my material?

[eager folio]

@sly breach That IS a super cool effect at least.

The scale 10 one looks like it could totally be used as a stylized transition, like the sort of stuff you'd see in a persona game

[bright flicker]

how may I achieve something like the image below?

I'm new to shaders

[thick fulcrum]

looks a bit like z-fighting / depth issue, is the shader transparent or opaque alpha clip?
if transparent are you forcing it to write to depth etc?

[mild terrace]

So how do I change to the right thing?

[eager folio]

@bright flicker There's a LOT going on there; many different effects. I suggest trying to break it down into the individual elements to tackle.

[bright flicker]

I'm new to shaders, whats the line of thought?

[eager folio]

Well, the first thing to look into would be the outlines; there are several ways to do those. After that I'd look into colored shadows and screen overlay textures.

[bright flicker]

can it be done in shader graph?

[eager folio]

A lot of the look of it will come down to the models and textures rather than the shaders.

And partially shadergraph, partly render features.

Unity has an official tutorial on outline rendering with render features

Though googling will probably find nicer

[bright flicker]

someone broke the effect down for me "It’s a sobel -outline post process with a gentle parchment paper multiple overlay"

[eager folio]

For geometry like this you could probably also just draw the lines on the textures of the model

[bright flicker]

doing it as a PP effect would save me time I think

[eager folio]

It probably would.

Just saying, don't assume too much 😄

[bright flicker]

hm cant find anything about screen overlays in shader graph, Im guessing its a render feature?

[eager folio]

If you just need a static overlay, you can just add a transparent plane in front of the camera too

That's how I do ovscreen textures for 2d stuff

[bright flicker]

may we bring this to DM?

we can arrange that

[thick fulcrum]

when buying assets from the store, one needs to ensure that it will support the relevant render which one is working with. In this case URP, if it does not state compatible with URP or HDRP it's safe to assume that it's only for use with built-in. Unless you are proficient in writing shaders, there is no "upgrade" as the shader needs adjusting to support URP.
You could reach out to the asset store developer to see if they have / will make an URP compatible shader for this product or ask for a refund as you didn't realize it was not suitable for your project.

As this asset claims only URP product it should work, if it's not then again I would advise reaching out to the dev for help. But as it's free I would not expect a speedy response but you never know unless you try.

[warm otter]

is it possible in shader graph to clamp the lighting strength?

[broken crow]

Hey question when i am changing to multiview from multi pass in android seems that some of the shaders will stop working any idea why?

[bright flicker]

how do I make my shader affect only darker areas of my screen?

[grand jolt]

Hey guys, I'm kinda blocked trying to figure out the requirements to get additionnal lights informations

void AdditionalLights_half(half3 SpecColor, half Smoothness, half3 WorldPosition, half3 WorldNormal, half3 WorldView, out half3 Diffuse, out half3 Specular)
{
    half3 diffuseColor = 0;
    half3 specularColor = 0;

#ifndef SHADERGRAPH_PREVIEW
    Smoothness = exp2(10 * Smoothness + 1);
    WorldNormal = normalize(WorldNormal);
    WorldView = SafeNormalize(WorldView);
    int pixelLightCount = GetAdditionalLightsCount();
    diffuseColor = half3(pixelLightCount * 100, 0, 0);
    for (int i = 0; i < pixelLightCount; ++i)
    {
        Light light = GetAdditionalLight(i, WorldPosition);
        half3 attenuatedLightColor = light.color * (light.distanceAttenuation * light.shadowAttenuation);
        diffuseColor += LightingLambert(attenuatedLightColor, light.direction, WorldNormal);
        specularColor += LightingSpecular(attenuatedLightColor, light.direction, WorldNormal, WorldView, half4(SpecColor, 0), Smoothness);
    }
#endif

    Diffuse = diffuseColor;
    Specular = specularColor;
}

#endif

This code works fine called as a custom function from the shader graph. But I don't know what I'm missing to get it work with hard coded shader. I guess I didn't enable the filling of the variables used inside, but hard to guess how to do so.

[regal stag]

Usually you also need to define some keywords

#pragma multi_compile _ _ADDITIONAL_LIGHTS_VERTEX _ADDITIONAL_LIGHTS
#pragma multi_compile_fragment _ _ADDITIONAL_LIGHT_SHADOWS

You should also be including Lighting.hlsl if you aren't already.
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"

[grand jolt]

Yeap looks like I forgot those little guys 😄 the count doesn't seems empty anymore. Don't really know how to use it correctly but that's a first step.
Thanks

[balmy cove]

Does anyone know why editing _BumpScale is disabled on mobile platforms in Unity's SRP?

[heavy relic]

Does anyone know why uncommenting this line causes unity to freeze?

float4 neighbourTex = (0,0,0,1);

                    for(int x = -0.01f; x < 0.01f; x+= 0.01f)
                    {
                        for(int y = -0.01f; y < 0.01f; y+= 0.01f)
                        {
                            if(i.uv.x + x < 0 || i.uv.x + x > 1 || i.uv.y + y < 0 || i.uv.y + y > 1 || x == 0 || y ==0)
                                continue;
                    
                            neighbourTex += tex2D(_MainTex, float2(i.uv.x + x, i.uv.y + y));
                        }
                    }
                    
                    //return neighbourTex / neighbourTex.w;
                    return renderTex;

Sorry for the poor formatting, I'm on mobile

[shadow locust]

🤔

why are you using int

does this even compile?

the resulting equivalent when all the casting and converting is done is probably like:

for (int i = -1, i < 0; i += 0)

which obviously will be an infinite loop

[amber saffron]

Makes sense. And I guess that because the return line is commented the precompiler just strips all the loops code because it's unecessary.

[sly breach]

can somebody explain the intuition behind this one

why does it results in hollow shapes ?

[grand jolt]

Hello again ! Someone know how to get unity sky color in urp shader? In fact I wasn't even able to use the shadergraph node. I guess I miss some define : s

[sly breach]

sky box can be a shader , what do you mean get its color ?

[grand jolt]

SHADERGRAPH_AMBIENT_SKY unity_AmbientSky those macro/variables are supposed to give the color used by the sky of the skybox, if I'm right

[grand jolt]

that's stressing me that you cut out the value range of the remap x) probably won't explain... but

[sly breach]

-10 , 10 lol

[sly breach]

u can add custom nodes and have inline functions

idk what is going on there but maybe this will help

[grand jolt]

I'm not using shader graph on this one, but even the shader graph node for this doesn't work for me

[grand jolt]

void Unity_Rectangle_float(float2 UV, float Width, float Height, out float Out)
{
    float2 d = abs(UV * 2 - 1) - float2(Width, Height);
    d = 1 - d / fwidth(d);
    Out = saturate(min(d.x, d.y));
}

I always forgot what do the fwidth, but yeah there is at least an abs

but if the outcome is less that the next value, that can happen

[regal stag]

The logic is a little strange as the remap output is a Vector1 while the UV is a Vector2. Both components are filled with the same value. Usually you'd use the UV node which places a rectange centered at (0.5,0.5) with the given width/height. A width/height of 1 would fill that 0-1 UV square, but you can still input coordinates outside that range, which would be outside that rectangle. The hollow shapes is due to the coordinates being outside that rectangle, though it doesn't look anything like a rectangle due to the coordinates being used.

[regal stag]

If you're doing ambient lighting it's usually baked in with the lightmap or lightprobes data so you don't usually access the colours directly. You should use the function,
SAMPLE_GI(input.lightmapUV, input.vertexSH, inputData.normalWS);
along with something like this in the vertex shader

OUTPUT_LIGHTMAP_UV(input.lightmapUV, unity_LightmapST, output.lightmapUV);
OUTPUT_SH(output.normalWS.xyz, output.vertexSH);

The source for the URP/Lit shader (LitForwardPass.hlsl) should show how it's set up. https://github.com/Unity-Technologies/Graphics/blob/master/com.unity.render-pipelines.universal/Shaders/LitForwardPass.hlsl

[grand jolt]

Ahah just put my eyes on it at this exact moment x)
Thanks I'm sure I'm on the right part then ^^

But I'm curious if someone know how to make the node in the shader graph work then :0

[regal stag]

It returns unity_AmbientSky/unity_AmbientEquator/unity_AmbientGround as you mentioned above. I think the node has been a bit glitchy in the past. I seem to remember it only updates when the game starts or something like that?

I don't really use it that often so not sure if that's changed. There's a GI node too which includes the ambient lighting so I'm not really sure why the others are needed, maybe for a cheaper version, idk.

[grand jolt]

On game start or scene save, the documentation said. But didn't work for me 🤷

[sly breach]

im a bit perplexed about this part

( this is Unity_Rectangle_float recreated in nodes )

[regal stag]

It's basically creating an anti-aliased version of the shape. If you used a Step node it would be similar results but much sharper/pixellated. The fwidth function is also the same thing as the DDXY node.

What fwidth/DDXY does it a bit more complicated, but in short it's comparing neighbouring pixels/fragments as the shader runs in 2x2 pixel blocks. If I recall correctly ddxy = abs(ddx) + abs(ddy)

[sly breach]

here is what it looks like with the remapped -10 to +10 UV coordinates - already at the absolute stage it looks like something i would need

[sly breach]

where would u put the step to compare ?

looks totally different on the nodes if i do this

[regal stag]

after the Subtract node, probably with an Edge value of 0. And I mean compared to the preview on the Divide, not the custom function

[sly breach]

still doesn't look anything like fwidth

[sly breach]

sounds like a convolution operation

ddx = x1 - x0 ?

[regal stag]

I think you confused the nodes I mentioned. fwidth is the same as the DDXY node.

[regal stag]

I think so yeah

[sly breach]

ah yes it is

[regal stag]

You can also try looking up "screenspace partial derivatives" if you want to know more about them.

[sly breach]

now it makes a bit more sense , its not very intuitive when the preview nodes will only draw value from 0 to 1

but preview nodes are absolutely amazing as they are already

@regal stag any change you know extensions for preview nodes to change the draw range / color space ?

[heavy relic]

Bruh I'm a dumb. It's bc I was using ints prior to changing it, and I'm so used to using car that it never even occurred

var*

[regal stag]

No, but that's basically what the remap is for. Could use that temporarily to remap values into a different range.

This is what I meant by the comparison with the step node btw. Can see the anti-aliasing being produced by fwidth/ddxy better with the ellipse too.

[proud hamlet]

is there a way to make a texture be the same "size" independent of the size of the object/face?

That's the same material on 2 different objects. Is there a way to have the squares on the texture have the same size on every object that uses the material?

while also avoiding having it be "squished" on narrow surfaces

may have found the answer https://gamedev.stackexchange.com/questions/111060/unity-tiling-of-a-material-independen-of-its-size

[proud hamlet]

nope, the shader approach only works for 2D

and the script didnt work well either

[shadow kraken]

What you want is a world aligned / triplanar projected texture

[proud hamlet]

i'll look into that

[willow pike]

Wondering if anyone can help me adapting this screen space rain impact system to work in URP. I managed to add a custom renderer feature for depth normals but a bit lost on where to go next. https://github.com/thnewlands/unity-botw-screenspace-rain

Maybe there's an easier way to achieve these results? My goal is to get rain impact splashes without using collisions in URP (I'm using an ortho camera)

[sly breach]

how to overlay two nodes ?

so that both colors will be preserved

add will work pretty good if the top one is pure white

[regal stag]

Use a Lerp or Blend node (Overwrite mode). Set A/Base to your 1st layer. Set B/Blend to the ColorA. T/Opacity to the black/white output before your 2nd layer.

[sly breach]

already tried those 2

the red doesn't pop up

[regal stag]

Because you set the Opacity to 0.5. It's an interpolation, if you set it to 0.5, you'll get a colour halfway between red and blue. You need to set it to 1 where you want the red to show up, and 0 everywhere else to show the blue/black. That's what the black/white preview before your 2nd layer is.

[sly breach]

i mean like this

to keep both colors , overlay the red on top of the blue ( the blue is thicker , the red is skinny )

in theory this should do the trick _blue_node - float( _red_node ) + _red_node

but it doesn't :<

[regal stag]

@sly breach This is what you want right?

Or maybe the red mask is a bit centered but should still get the point across

[sly breach]

never thought about using a texture as the lerp value before

[sly breach]

thank you

[somber bolt]

How do you change the UV tiling of Shaderlab shaders?

[fluid peak]

Feed a sampler state into the ss input if appropriate nodes

[urban dune]

Is there a way to make a 2d sprite reflective like a mirror?

[fluid peak]

If you have a separate mask sprite to separate where you want the reflections, and a normal map then i don’t see why not, sprites are inherently just textured planes

[lethal brook]

i cant find the master node/stack in shader graph

oh im stupid

i wasnt using the urp thingy

[shadow locust]

Just make your boxes with probuilder. It will automatically tile the UVs for you and you can use a regular shader

[lethal brook]

when I make a material off the shader and add it to an object, it doesn't change anything

despite it showing both the texture and the waves working in the preview

[shadow locust]

Does anyone know if this situation with shadergraph has improved at all recently? I really want to upgrade my project to HDRP and use shadergraph but my game relies heavily on compute shaders and being able to read data from StructuredBuffers in my shaders.
https://forum.unity.com/threads/is-shader-graph-support-compute-buffer.753701/

If not - does anyone have any experience hand-writing shaders in HDRP and do you know if it supports StructuredBuffers etc?

[eager folio]

@proud hamlet World space UVs, usually with triplanar mapping.

[sly breach]

is there a method for auto tiling using object scale for cubes ?

this seems to work on 2 axis only when y scale is 1

was thinking something todo with normals but not sure how yet

[fluid peak]

You want triplanar mapping.

[sly breach]

first time hearing this

[fluid peak]

Uv is inherently 2d, object/workd coordinates are 3d. So if you feed x and y into uv, it will output the sane value for all z levels... the same no matter which 2 you pick, the other axis wont cooperate

[sly breach]

yea that makes sense

there should be a way how to use the face tangent tho

[fluid peak]

Triplanar takes the normal of the surface, and 3 sets of uv mapping, then blends between each depending on normal

[sly breach]

to know what axis to map the UV to , or am i wrong ?

why 3 sets ?

can't we just flip the X&Y domains based on the normal ?

[fluid peak]

There is a triplanar node that will map a single texture across all 3 axis properly, but if you want different textures (commonly to put grass on top of hills, and dirt on the sides) you have to use code or rebuild the function in nodes

[sly breach]

oh i get it , so it would be possible to have a unique texture per axis ?

i see

what's the name of the node ?

[fluid peak]

Triplanar mapping, i think under UV... but just type in triplanar and it’ll find it.
This is Cyan’s tutorial on it

https://www.google.com/amp/s/cyangamedev.wordpress.com/2020/01/28/worldspace-uvs-triplanar-mapping/amp/

[sly breach]

cyan 🙌

[fluid peak]

This is triplanar built in nodes, not SUPER complicated just make sure you match all the settings

[sly breach]

pretty cool but i don't need any texture input

( using procedural patterns )

[fluid peak]

If your not using a (t2) texture input, you have to build it out in nodes, thats just the nature of the builtin function. Or use a custom node and copy the code in

[sly breach]

yea i found the docs page , might try custom function , seems like it will be a lot of nodes

float3 Node_UV = Position * Tile;
float3 Node_Blend = max(pow(abs(Normal), Blend), 0);
Node_Blend /= (Node_Blend.x + Node_Blend.y + Node_Blend.z ).xxx;
float3 Node_X = UnpackNormal(SAMPLE_TEXTURE2D(Texture, Sampler, Node_UV.zy));
float3 Node_Y = UnpackNormal(SAMPLE_TEXTURE2D(Texture, Sampler, Node_UV.xz));
float3 Node_Z = UnpackNormal(SAMPLE_TEXTURE2D(Texture, Sampler, Node_UV.xy));
Node_X = float3(Node_X.xy + Normal.zy, abs(Node_X.z) * Normal.x);
Node_Y = float3(Node_Y.xy + Normal.xz, abs(Node_Y.z) * Normal.y);
Node_Z = float3(Node_Z.xy + Normal.xy, abs(Node_Z.z) * Normal.z);
float4 Out = float4(normalize(Node_X.zyx * Node_Blend.x + Node_Y.xzy * Node_Blend.y + Node_Z.xyz * Node_Blend.z), 1);
float3x3 Node_Transform = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);
Out.rgb = TransformWorldToTangent(Out.rgb, Node_Transform);

do i need UnpackNormal at all ?

im guessing .xxx = float3( x, x, x )

[fluid peak]

Im not familiar with the code version 🤔

[sly breach]

https://docs.unity3d.com/Packages/com.unity.shadergraph@10.3/manual/Triplanar-Node.html

just for rereference

[fluid peak]

Im on break at work, i dont have time right now 😦

[sly breach]

nah u r alright , thanks for any info at all

[fluid peak]

Np good luck

[vernal glen]

@hushed wing Although you probably already knew, the answer to my question about duplicating grass shader a few hundred times and then slapping it all over the terrain with a size of 1000, 600, 1000, was a definite no lol. Even with just with like 10% of the terrain covered and a few hundred enemies spawned and spread out, fps dips to 30s with an RTX 3080.

Although, I’ve never looked into performance things. There’s probably a way to do it with object culling.

[teal solstice]

does anyone know a solution to fixing unity not displaying a basic mesh as transparent when i change the layer to transparentFX?

[lethal brook]

finally got it working!

[lethal brook]

quick question

the water seems to move in tune with the movement of my mouse, when my mouse isnt moving, the water stops, and itll continue when i start moving my mouse again

is there a way to make it so it only moves when i start game

[fluid peak]

Thats a quirk of sceneview when the scene isnt in “play” mode. Run the scene and it should be fine

[lethal brook]

but changes made to the game during play mode arent preserved

[fluid peak]

No, unfortunately any change made in the inspector doesnt save when the scene is stopped, only things that do the i know are shadergraph changes, and c# changes (although recompiling the code mid run sometimes breaks stuff.

[eager folio]

@teal solstice that dropdown only sets the layer, it doesn't affect the material or shader in any way. Layers are used by unity to tell what objects to render, which should collide with each other, etc.

[lapis grove]

I still can't believe that there's no way to designate values to be saved when you exit play mode all these years later

[eager folio]

@lethal brook there is a button at the top of the scene view to enable animated materials, but even with it off you'll still see some animation while interacting with the window because you are forcing it to refresh.

[vocal narwhal]

Scriptable Objects are a good way to save stuff from play mode. If you expect the need, using them in your architecture makes it work

[eager folio]

You can also copy values of a script in play mode then paste then in edit mode.

[vocal narwhal]

and in this case, Materials will also save

the time the shader uses to drive something like waves is different in edit vs play mode anyway

it will reset to 0 when you play

and the editor has its own time

[eager folio]

Yes, it is, but just saying that's all that's happening.

Thiugh on that note, is there a way to have different render features on the editor window than the game?

It is getting really annoying to see camera relative effects smeared across my scene view.

[vocal narwhal]

not that I know of

[teal solstice]

So to make it render as transparent in game, a shader should do the trick? I was able to get it to render properly with that layer effect on other objects that I used to create game boundaries without using shaders, but I'll see if that fixes it

[eager folio]

A transparent shader, yes

[regal stag]

The editor uses the forward renderer assigned on the URP asset set as the default. You can have multiple and change it for your main camera so scene view vs game view uses a different forward renderer.

[eager folio]

It seems like a weird oversight that you can't set the renderer directly, but thanks!

[regal stag]

That's the version for normal maps. There's a separate albedo/colour code snippet on the page if you want that instead (both docs and my tutorial)

[whole echo]

So, in URP there's a way to call CameraColorTexture to generate data to detect color discontinuities in the scene. I'm wondering if there's a way to generate this texture in built-in pipeline?

[regal stag]

If it's for a mesh in the scene you'll probably want to look into GrabPass, it can generate a similar texture to the CameraColorTexture

[regal stag]

If anyone uses custom functions in shader graph for lighting/shadows you might be familiar with the "shadowCoord" error that is produced in an Unlit Graph when using 1/No Cascades and the _MAIN_LIGHT_SHADOWS keyword (which is required to prevent Unity from stripping the shadow variants from the build).

Well, I just figured out you can fix it if you undefine this in your .hlsl file. Just wanted to share ~

#undef REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR

Can also surround it in SHADERPASS checks if you want to be slightly safer to stop it removing the interpolator for the SHADERPASS_FORWARD pass which is used by the PBR/Lit graph if you use it there (which has the shadowCoord in Varyings so doesn't error, and is cheaper since it handles it per-vertex).
I've also updated my functions on github with this fix : https://github.com/Cyanilux/URP_ShaderGraphCustomLighting

[lethal brook]

this tutorial im following is telling me to use the albedo node

but i can't find one

[regal stag]

If you're in v10+ the port was renamed to just "Base Color"

[lethal brook]

oh i see

[lethal brook]

when making a material from a shader, how do i make the tiling larger so that the water ripples arent so tiny

[amber saffron]

Use the tilling and offset node to controll the tiling of the UVs used to sample the texture

[somber bolt]

Thanks for sharing TriPlanar mapping. Spent several days trying to figure out how to combine HLSL shader code with Triplanar mapping.

[lean lotus]

soooo I made an octree thing to seperate a mesh into pieces(each leaf node of it has a list of numbers that represent what triangles are inside of it), and it seems to work ok(although initialization/building times for it are REALLY long for small meshes), but I build it via a recursive(I think?) octree, made from the tutorial from World of Zero youtube channel
My question is, how on earth do I send something like this to a compute shader? My goal for this was to use it as an acceleration structure for my raytracer(tho im starting to become more doubtful as to my implementations effectiveness, but idk what else to do/how else to do it)
As usual if this is the wrong place let me know and ill delete it, but idk what else to do with this

[lethal brook]

is it possible to make a square that has a fog effect inside it?

that way when you're underwater, theres fog that prevents you from seeing too far

[fluid peak]

everything is possible, its up to the programmer / artist everything is just manipulating numbers. its up to us to break down WHAT exactly we want to change about how the scene is displayed and why, then reversing that into how to do it in the tool were using, for your question you need to be able to detect is a given pixel being drawn is going through a volume or not, which is an easy volume check once your completely submerged. it will get interesting when your halfway in the water and can see both in and out, even many AAA games fail that use case

[lethal brook]

I meant the question more as in "how do i go about doing that"

the water surface is opaque

so i don't have to worry about seeing in/out of the water

[fluid peak]

then you need to lock down HOW you want the pixels to change based on the information in the scene. in water color information gets muted, the further something is, so not only does it fog out but the colors blend together, its why many fish have "red" camoflage, the way colors change with distance in water is unintuitive, this applies to general depth, but also distance away from camera horizontally, red fish literally disappear sooner than other colors.

[lethal brook]

i just want things to fade as they're far away, and i want water thats farther away to be a darker colour

the games artstyle is fairly simplistic so i don't need anything super crazy

[fluid peak]

you will want to bring in the depth shader information, and use that to process how much of a given objects color information to blend into the given pixel. so i think playing with depth shader information is going to give you wnat you want, atleast inside the shader. the most simplistic, is using the scene fog setting under Window>Rendering>Lighting>Environmental

[meager pelican]

You could compute that water-level intersection of the camera pos, then remember that and do a distance calc for all the water pixels. You'd get a circile/radius type of thing from that point. Pass it to the shader to do the distance calc. The greater the distance, the darker you'd make it.

[lethal brook]

Could you walk me through that if it's not too much trouble?

No problem if you don't feel like it

[low lichen]

So you're not talking about making objects inside the water darker, just the water itself?

[lethal brook]

I want objects to fade as they're farther away, as in be covered by the water

i assumed making the water darker would make the objects appear darker

[low lichen]

Does the camera ever go into the water?

[lethal brook]

yeah

its third person, the player will be able to dive underwater later in the game

[meager pelican]

If you just want a darkness level, check out LinearEyeDepth macro. I think you can get that as an output of the depth texture node. That MIGHT help. But if the camera height above/below water changes, then it won't be water-level relative to use those macros.

Otherwise, if you know the worldspace Y pos of the twater level use camera.x and Z worldpos, and water level Y pos and you can calc a distance function from there. You'll want object's worldpos too. Then distance(objectWP, waterlevelWP).

[meager pelican]

OK, "Scene depth" is flat, like you're seeing.

Is that what you want?

It's camera plane relative.

Not eye distance, which is different

[fluid peak]

scenedepth read into a gradient, mix in whatever other color data you want, i wanted to keep it simple for him to play with

[lethal brook]

not with as many fancy effects, but something similar to subnautica's water fog

[fluid peak]

yes that is the color fading i was talking about at first, the color an object is displayed as changes as it gets further away, closer to the waters color, same concept, just changing the colors on the reference gradient, there are many more complicated ways of calculating it depending on how deep down the rabbit hole you want to go

but notice how red goes away first, it helps sell the fact that its water and not just fog

[lethal brook]

ah i see

i didnt understand what you were saying at first

[odd dagger]

I know this is very beginner stuff but I was trying to figure out how to do additive blending on 2D objects using shader graph

Wasn't sure whether to post this in 2D or here

[meager pelican]

https://docs.unity3d.com/Manual/SL-Blend.html
It's a Blend 0ne One oldschool.

What pipeline?

[fluid peak]

interesting shader topic 🙂

[odd dagger]

Why did you link me a coronavirus article

Ah thanks

[meager pelican]

lol Cuz I'm stupid.

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

Is an SG function

You can set the blend mode for the shader too.

I'm not running SG right now. So sad

[odd dagger]

I don't understand where to write code for shaders. I'm very new to shaders

[fluid peak]

"code" code is in a custom shader node and is usually a more advanced topic, have you played with just shadergraph yet

[odd dagger]

I'm doing that but I'm not sure how to get additive blending out of it

[lethal brook]

this is breaking my brain, ill hold off on water fog for now

i should probably focus on above water stuff

considering thats 99% of the game

[odd dagger]

So my thought process is this much so far and I figured that Additive would be an available mode where it says Linear Light but it isn't

[fluid peak]

at the basic level your working with numbers. additive blending is adding 2 numbers together for each color, what two numbers are you wanting to add, the sprite color, and background scene color?

your image is adding a number to itself, so your basically multiplying each number by 2

[odd dagger]

I guess what I want is for sprites to have the additive effect amongst themselves

So if these sprites overlap, the effect is apparent

But how would I show that in shader graph?

[somber bolt]

One thing thats always puzzled me. Why do Console Shader error line numbers not correspond to actual line numbers in the shader code?
ie
Shader error in 'foo': invalid subscript 'xy' at line 41 (on d3d11)

but on line 41 I have commented code!
//_MainTex_ST.x=2;

[low oak]

Is there any "universal" way to create ground fissure that works for all render pipelines ? Every time I find something it works on only one pipeline. The ShaderMask in unity wiki doesn't work in URP (or you need to put the ground surface on "Transparent"), stencil buffer works in URP but as I understand it wont work in HDRP. Or you can use the ForwardRenderer in URP but then you need to use Layers, which I like to use only for physic stuff.

Or maybe there is a way to create this effect without using the render queue or anything like that. Like a magic shader ?

[lethal brook]

why is the water pink now

[fluid peak]

pollution?

[regal stag]

The line probably corresponds to something in the compiled version of the shader, so isn't always useful.

[thick fulcrum]

there are ways to do this, it might take a combination of techniques... have you looked at interior mapping effects (aka fake rooms) https://www.habrador.com/tutorials/shaders/2-interior-mapping/
think I saw someone use a modified decal shader to do this sort of thing for ground fissures, but can't just spot it at moment

[shadow locust]

idk but it looks really cool

[sly breach]

that's all i ended up needing , thanks

[toxic kettle]

Noob rendering question: triangles with normals facing away from the camera are not rendered (they don't go all the way to rasterization), but they are passed to the GPU for culling? E.g., if I have a million triangles facing away from the camera, I'm not rendering them but there is some minor overhead associated with the culling process?

[toxic kettle]

In visual terms this is how rendering works. The faces on the back of the sphere are not rendered so you could have an incredible amount of detail there (e.g., a character's face) without it having too much of a performance cost? https://flylib.com/books/2/124/1/html/2/files/figure15-6.jpeg

[shadow locust]

Anyone know where I can find a sample manually written shader for HDRP?

I want a basic Lit shader that I can modify the vertex pass of with some data from a compute shader

[vernal glen]

I'm at a dead end for increasing performance. I followed a Brackey's for creating a shader graph for grass movement. I then tried duplicating the grass/shader hundreds of times to place around in my scene, but the performance is abysmal. I've tried the basic performance tweaks, and I've even went as extreme to do layer culling specifically for the grass, but the only way to get the performance even reasonable is to apply linear fog and set the culling to like 15m, but with that much fog to hide the pop in you can't see anything.

Is there a better way to do this?

[sly breach]

do you have gpu instancing turned on ?

[vernal glen]

Yeah I do @sly breach

I just don't think it's reasonable to cover this all with grass how I have it eh

[sly breach]

u can always try Graphics.DrawMeshInstanced

[vernal glen]

Compressed the textures down to 32 also

Hm

Never heard of that. thanks.

I will have to read a lot into that to understand, but sounds like it would be better than what i'm currently doing.

[sly breach]

one more think to keep in mind LOC would save u alot of trouble if you want to support very distant rendering range

[sly breach]

gameobjects are very expensive in large quantities i would look into DOTS or try that DrawMeshInstanced trick

[vernal glen]

Ok good to know. Yeah I had a feeling this was wrong, felt too brute force to be effective.

Will look into DrawMesh.

[vernal glen]

And can you explain this? LOC? Lens occlusion culling, or?

[sly breach]

sorry i meant LOD

[vernal glen]

Gotcha.

Thanks.

i was actually searching for a setting for that.

[sly breach]

last time i played with DrawMeshInstanced i was able to draw a million shapes easily , there are some assets on the store that remove the need to use code for this but i would still recommend trying it out as its not too difficult

@vernal glen just search for an example on github and this one seems pretty straight forward ( u can ignore batchRendererGroup ) : https://github.com/tkonexhh/Unity-Procedural-Terrain/blob/master/Assets/Scripts/DrawMesh.cs

[vernal glen]

ok will see if i can figure it out. thanks again @sly breach

[sly breach]

good luck

[vernal glen]

@sly breach I don't understand where to set the position?

I see some of the grass underneath the scene.

Wait must be Random.insideUnitSphere * 10f

[sly breach]

matrices[i] = Matrix4x4.TRS(
  Random.insideUnitSphere * 10f,            <- POSITION 
  Quaternion.identity,                      <- ROTATION 
  Vector3.one * Random.Range(0.5f, 1.5f)    <- SCALE 
);

[true relic]

Hello guys i need advice of some really good tutorial where you can as fast as possible learn about shaders?

[vernal glen]

Thanks think i'm getting closer

[sly breach]

u can do var pos = Random.insideUnitSphere * 10f and the pos.y = 0 to make it flat

tag me in #archived-code-general this is a bit off topic

[vernal glen]

Ok will mess with it a bit and report back in gen. @sly breach

[frail yarrow]

Wondering if someone with more shader experience then me can tell me if my solution to a problem I have would actually work.

I'm trying to have permanent skid marks for my vehicles in my game. I'm currently using trail renderers, but they wont allow me to keep them permanently as a game can last for upwards to 30 minutes with up to 12 players.

My solution is to have a texture that the cars can 'paint' their skidmarks on, and then to use that texture as a mask for the darker marks on the ground with some type of Additive blending. Allows for the skid marks to get darker the more times they are passed over as well, which would be a nice feature.

But I have a few concerns
A) Would the texture need to be massive to get that kind of detail? or could I just use some type of blending and a low res texture?
B) Is this even a viable solution, I'm assuming adjusting a single texture every few frames can't be terribly performance heavy. But I really don't know.
C) Is there a better/easier solution that I just haven't thought about?

Thanks for the help.

[shadow kraken]

That is the approach I would go for. You would do it with a render texture. I’ve done this in unreal before, for snow trail shaders. The theory would be the same so you might find a tutorial for unreal useful for planning

The size would depend on your map, though you could add some noise to add a layer of detail

[lethal brook]

how do i get a basic foam thing working for my water?

that way a white outline appears around objects sticking out of the water

[frail yarrow]

ok perfect, thank you for the feedback, I appreciate it, I'll take a look for similar things with snow trails see how others did it

[stray turtle]

Hey Guys, when an object got multiple LOD below it what does it mean ? what are a LOD ?

[tame topaz]

LOD stands for level of detail. Depending on how far away the object is from the camera will determine which model is used for rendering.

Lower poly models are used further away since the player won't be able to see the lack of detail.

[stray turtle]

oh okay but how to deal with that in Unity. let me explain.

I want to add a mesh collider.

and a rigidbody.

but on the empty object that contains everything it doesn't work.

so I placed it on one of the LOD

the result is only this LOD1 is showing gravity.

so how to use this?

[tame topaz]

This isn't a shader question, best asking in #💻┃unity-talk.

[stray turtle]

ok

[shadow locust]

Anyone know how to access a StructuredBuffer from ShaderGraph?

[lean lotus]

How can I pass a struct containing an integer array to a structured buffer/compute shader? trying to pass octree to compute shader but it keeps saying not blittable

[shadow locust]

https://docs.unity3d.com/ScriptReference/ComputeBuffer.SetData.html

I guess the short answer is: With a ComputeBuffer

[shadow locust]

how are you trying

[lean lotus]

I got a struct with an array in it, I put it into a list, and try to pass it to a structured compute buffer

[shadow locust]

yeah that won't work

System.Array isn't a blittable type

you have an array of these structs?

er, list of these structs?

In general your struct needs to be of a fixed, known byte length

[lean lotus]

hmmmm ok
I have List<Octree> with Octree having 2 arrays in them(with length I would set if it would let me)

[shadow locust]

https://docs.microsoft.com/en-us/dotnet/framework/interop/blittable-and-non-blittable-types

One-dimensional arrays of blittable primitive types, such as an array of integers. However, a type that contains a variable array of blittable types is not itself blittable.

I think that last part is your issue

[lean lotus]

heck.... so how do I make it not variable, or is this just not something I can do?

[shadow locust]

I'm not really sure what an Octree is

I've heard the term before, but I know nothing about it

but is there any way to flatten it out so it's just a single array of structs with a known size?

[lean lotus]

I know the sizes of them tho idk how to tell it that tho
The octree I’m using to split apart a mesh so a compute shader raytracer has to look for intersections with a smaller part of a mesh, I’m storing the number of children each node has and the number of triangles in each final node(array of size 16) in arrays within a struct

[shadow locust]

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/unsafe-code-pointers/fixed-size-buffers

maybe this will work?

ah but maybe it only works in unsafe code?

I've never messed around with that

[eager folio]

@frail yarrow You could use vertex colors

[lethal brook]

so to make a cel shader, i'll have to apply a specific cel shading material to every object?

[twilit geyser]

Hey guys! I have a weird problem with a shader I'm working on. The gist of it is that the shader behaves differently depending on whether I'm using a constant value or the exact same value but from a property. I don't understand why this would happen.

Basic shader with constant value of 1 for both the multiply and the power node:

Results in this:

However, when I use values from variables in the inspector like this:

I get this bugged out version even though the values are the exact same:

[regal stag]

@twilit geyser Not exactly sure why there's a difference when using a hardcoded value vs a property, but it's occurring because there is negative values there and the Power node cannot handle a negative A input. You should also Clamp/Saturate (clamps between 0 and 1) before the power.

[lethal brook]

can someone help me with making foam borders in water

im struggling a lot iwth it

whats going on with this

it looks like something shadow related

bc its only on one side of the object

but i have casting shadows disabled for both object

[thick fulcrum]

a bit more info is probably needed, but in general foam boarders are done by using a depth map of "terrain" and or objects flagged to be included as terrain. Most tutorials use the scene depth value which won't work properly from underneath. Pre-baking depth is usually best for a given area

[lethal brook]

no this is unrelated to the foam thing

[thick fulcrum]

ah ok 😄

[lethal brook]

sorry lol

i still am not sure how to do foam though

i've followed 3 different tutorials and none have worked

[thick fulcrum]

is this URP?

[lethal brook]

yes

[thick fulcrum]

as most tutorials use scene depth which needs to be enabled in the render pipeline asset for URP

[lethal brook]

yeah i did

[thick fulcrum]

oh and usually assume transparent shader, might work with opaque alpha cutout not played with this in a while

[lethal brook]

wouldnt work with transparent either

[thick fulcrum]

camera not overriding depth setting?

[lethal brook]

hm?

this is the setup you're supposed to have, right?

[thick fulcrum]

failing that I'm a bit stumped, need to pop out but double check settings and perhaps try in a separate project to ensure it's correct.

[twilit geyser]

Yeah that actually helps, still confused why it doesn't work with property, but oh well. Thank you!

[thick fulcrum]

don't think you need anything before scene depth, but I'd have to check my graphs. if you still struggling later I will check when I'm back 😉

[lethal brook]

where do i connect the step node to

[frail yarrow]

oh thanks for the reply, I'm not really familiar with vertex colors, would that mean the terrain/levels would need to be relatively high poly? It's a fairly low poly game, which was why i was thinking textures. I will definitely look into them though.

[willow pike]

Is it possible to change the strength of shadows per object? I'm trying to cast a layer of light shadowing over my game world to simulate cloud shadows.

Decals would be ideal but URP still doesn't have official support. Found some hacky decal shaders on reddit for decals but they're not working entirely how they should.

[thick fulcrum]

Just a thought on decals, NiloCats decal for URP works pretty good imo. I use it for a large world wide grid projection to cover my whole terrain play area. You can adjust the options so that it works when camera inside the volume, which you would need for clouds. Lots of options to adjust the blending and if you are fine with tweaking code you could perhaps use noise to generate the cloud shadows.
That said I'd probably not use decals for cloud shadows if I could avoid it, how is your cloud layer made up at the moment i.e. is it just cubemap / flat plane or volumetric clouds?

[willow pike]

Thanks! Yeah I actually have NiloCats decal system in my project. It works great but I've been having trouble manipulating it in the way I want to because I'm used to Shader Graph and changing the code is daunting lol. Basically I'm feeding a wind and overcast density property into my clouds to control how they look. The density is controlled by the step amount on a noise texture and the wind changes the scroll direction and speed.

Ended up using this solution for now, it works pretty good. And yeah I'm just using a cube with a noise texture. But changing the direction of my wind direction is causing the whole texture to move around a crazy amount. I think I'm just not offsetting it correctly in my graph. https://github.com/Harry-Heath/URP-Decal-Node

[strong hedge]

hi i was working with instanced surface shaders and i was wondering how i could set the position of a instanced mesh based on something like an id in compute shaders

[thick fulcrum]

is your cloud shader transparent or opaque alpha clip? @willow pike

[willow pike]

Experimenting with both. The decal system using that link above uses a transparent with alpha blending and my alternative (more primitive method) is using an alpha clip texture that casts a shadow instead of projecting a decal.

[thick fulcrum]

I would have thought alpha clip casting shadow might yield more realistic (less hassle) results, that not the case?

[willow pike]

Actually I think I've got both working for the most part. My problem might be more simple than I was making it. I'm trying to use a weather vane that I can rotate to change the direction the clouds scroll in. But changing the direction scrolls the texture in a huge amount before it starts scrolling. What I'm hoping to do is only change the direction of scrolling and not offset it when rotating.

This is using alpha clip casting shadow, you can see when I rotate the weather vane it moves the clouds a ton. It's scrolling them in the right direction but I don't want it to move while rotating.

Here's my graph if you have any idea of how to get the desired effect. (Sorry for all the clutter!)

[thick fulcrum]

@lethal brook this is my Foam setup I've used in past and was working last I tried, it's a subgraph but should work just as well in main graph. I just add it into the color

[lethal brook]

thanks so much

[lethal brook]

is there any extra assets i need for this?

[regal stag]

I'd move the time & wind direction parts to C# and just pass an X and Z offset position to the shader. That would allow you to change the direction without tons of scrolling.

[thick fulcrum]

I use a foam texture, but one could use a noise sample in place of that to give more stylized look perhaps

[lethal brook]

alright, cool, thanks

[thick fulcrum]

the main thing is scene depth node setup, linear not eye etc.

[willow pike]

Awesome let me give that a try

[lean lotus]

Anyone know how to send an array within a struct within a list to a structured compute buffer? I keep getting Non Blittable error and its annoying because im so close to having this be able to be tested, only to fall just short(octree program for accelerating ray tracing)
I define the arrays as System.Int32[] in the struct that defines the list (I have it as List<structname>)Also if it matters, I have this code before each array in the struct
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=8, ArraySubType=System.Runtime.InteropServices.UnmanagedType.I1)]

This is the error it throws me:
OctreeData.nextnode is not blittable because it is not of value type (System.Int32[])

Sorry for the large text block but i have no clue what to do here, and I was so close to seeing results, but I stumbled at the final hurdle it feels like

[lethal brook]

so should this work

@thick fulcrum

i need the base colour thing for the water colour

is there i way i can have both the water colour and the foam in the base colour slot

[fluid peak]

lerp being fed by a fully black and white seperated mask

[thick fulcrum]

you can probably just use an "add" node in this case, with primary color and then foam.

[lethal brook]

it applies to all of the water when i do it

not just around edges

did i do something wrong

[fluid peak]

no, just all your water is foamy :)... there should be some kind of mask being generated so it knows what pixels are near the edge and which arent,

[thick fulcrum]

have you tried tweaking the values on the material, specifically what you've labelled thickness and strength?

also is the shader set to transparent?

if you need it opaque, then one could bake a depth texture to use for foam. but the setup is a little different and a bit more involved

[lethal brook]

i just tried, didnt work

[willow pike]

Following up from earlier - what's the easiest way to set up a shader graph shader for manipulation through C#? Should just need a _MainTexture property in the blackboard right? Should it be exposed?

[regal stag]

If you want to be able to swap the texture out, sure. The exact reference used isn't too important as long as the shader and C# match. Whether it is exposed or not depends if you want to set it per-material (material.SetTexture("_Texture", tex);), or as a global shader property (Shader.SetGlobalTexture("_Texture",tex);) which affects all shaders/materials with that reference.

Also to clarify, if we're still referring to the wind part I mentioned before, I was referring more to a Vector2 property than the texture, just used to offset it.

[fluid peak]

anything set as a "property" can be manipulated through code (except for gradients... grr) open graph inspector, and change "reference" to something easy to type, this is the name c# will reference in code to modify it.

[shadow locust]

One trick to improve performance if you're making such calls is to use https://docs.unity3d.com/ScriptReference/Shader.PropertyToID.html to get an integer ID to use instead of the name directly. You cache the int in Awake or Start and use that instead of the string

This may be impactful if you are manipulating material or shader properties in tight loops

[fluid peak]

ProbeMesh.GetComponent<Renderer>().materials[0].SetFloat("_GlowIntensity", 2); (earlier versions of unity enforced an underscore at the beginning of reference names, current versions can use anything as a reference name

[willow pike]

Awesome! Thank you all 🙏

Was having difficulty using material main texture offset, making the offset it's own property and using a shader global vector seems to be working

[regal stag]

Also make sure you're aware of the differences between Renderer.material and Renderer.sharedMaterial. If you don't want it to create duplicate instances use sharedMaterial.

[regal stag]

Yeah, if you were trying to use Material.mainTextureOffset it would likely be setting the _MainTex_ST property, which is a Vector4 containing the tiling (.xy) & offset (.zw) values.

[tough void]

wrong room guys sorry didnt see "lighting" room bellow 😄

[wind sierra]

ok, I know how to use these orm textures in blender but how do I use them in the unity shader graph?

[regal stag]

Sample it with the Sample Texture 2D node, and I would assume connect the channels to the appropriate ports on the Master node/stack. ORM refers to R=Occlusion, G=Roughness, B=Metallic I believe. Roughness would need to be put through One Minus node then into Smoothness.

[fluid peak]

take it into a split node, and each channel will be information to feed into occlusion, roughness, or metallic sections of shader (hehe typed too slow)

[wind sierra]

thanks

[primal imp]

my shader isn't loading correctly from distance
how to fix it?
please help

[somber bolt]

Gamma vs Linear color space question. What specifically should I be changing to make a shader that only works in Gamma space, work instead in Linear space?
Thru a few hours of trial and error discovered that was the reason my shader would not work.

[lean lotus]

is there any way to have a struct with an array inside of it be blittable so I can pass it nice and easily into a structured buffer for a compute shader? becuz otherwise I get to pass a struct with 30 elements in it instead of 11 elements with 2 of those being arrays(of whos size I do know), and this is driving me insane(especially since the way I have it set up right now, this function: System.Runtime.InteropServices.Marshal.SizeOf(typeof(OctreeData)) returns the same value for both structs, one just has 2 arrays in it)

[lethal brook]

does anyone know a good tutorial for cel shading in shader graph?

[knotty juniper]

https://www.youtube.com/watch?v=_jTXd3x6gOY

[lethal brook]

they dont really go in depth with that one

in one part they're just like "here's a sub graph, ANYWAYS"

without explaining the sub graph at all

https://www.youtube.com/watch?v=owwnUcmO3Lw i like the toon shader in this video

is there a way i could make it in shader graph instead of coding it?

[tame topaz]

Shader graph is just visual coding, so you can definitely recreate a written shader.

[lethal brook]

could someone help me do that?

i could pay to compensate

[fluid peak]

Unless your super time crunched and have money to burn its better to understand HOW something is done and fight your way through getting it to work yourself, builds on your skillset greatly, and next time it will be much easier.

[lethal brook]

I'd just like to have someone help walk me through it, I have trouble understanding instructions so I do better when im able to work one on one with someone

But I'll give doing it by myself a try

I'll let y'all know the results in a bit

[fluid peak]

Yeah and we can help figure out the little bits along the way

[lethal brook]

I'm having a lot of trouble

i really can't decypher anything

[fluid peak]

Well ultimately you are looking to create a shaded view based on light direction, that has stepped shading changes and probably an outline. Hi lights and backlighting are bonuses but work on those afterwards. To start, make a smooth shaded black and white version, which is just rendering with a plain white material, and flatten it to monochrome (split the screen color output into channels, average them between R,G,andB, then assign that averaged value back to all 3 channels

Now use a posterize node to drop it into stepped shading, bring in your block color texture and take the color from that to blend into the shades, you may play with gradients based on the greyscale value to give you more dynamic shading. This will get you 80% of the way there. Next lookup outline tutorials in shadergraph

[grand jolt]

why is this causing a partial transparency when color.a ( or a ) is equal to 1 ( which SHOULD be fully opaque ) ?

public void SetStandardMatAlpha ( Renderer objectRenderer, float a ) {

    objectRenderer.material.SetFloat ( "_Mode", 2 );
    objectRenderer.material.SetInt ( "_SrcBlend", ( int ) UnityEngine.Rendering.BlendMode.SrcAlpha );
    objectRenderer.material.SetInt ( "_DstBlend", ( int ) UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha );
    objectRenderer.material.SetInt ( "_ZWrite", 0 );
    objectRenderer.material.DisableKeyword ( "_ALPHATEST_ON" );
    objectRenderer.material.EnableKeyword ( "_ALPHABLEND_ON" );
    objectRenderer.material.DisableKeyword ( "_ALPHAPREMULTIPLY_ON" );
    objectRenderer.material.renderQueue = 3000;

    var objMat = objectRenderer.material;
    var color = objMat.color;
    color.a = a;
    Debug.Log ( "color.a : " + color.a );

    objMat.color = color;

}

[fluid peak]

Do you mean the grid you can see through it?

[timid minnow]

For URP, is there a way to create screen space distortion effects like Sonic Forces when you use boost? https://youtu.be/Z1MkpeEw4kM?t=20

I'm already utilizing the scene color node for some effects I have, but I know you can't really "layer" effects using scene color

so I guess I'd list that as another requirement

[fluid peak]

@timid minnow super easy, bring in scene color node, and modify the UV coordinates its sampling will distort the screen space coordinates. Each instance is scenecolor node is like a new texture sampler, layer as many as you want.

[timid minnow]

I've experienced issues like this person: https://forum.unity.com/threads/overlapping-transparent-shaders.1002148/

[fluid peak]

Its literally just a copy of the previous rendered frame as a texture to reference

[timid minnow]

interesting, is that right? It seems like multiple instances of it don't really "play nicely together"

and don't work well at all with transparency shaders

perhaps you're saying I have to do it all in the same shader graph

[grand jolt]

@fluid peak yes

the grid should not be seen at all

[fluid peak]

That is an issue with “transparent” renderpipeline and is an issue with most engines. The render order if you dont modify it it opaque stuff, save “scene color” then render the objects with transparent shaders but sampling the depth buffer, so objects behind each other will completely hide whats behind them regardless of if they’re see through

[grand jolt]

how to fix?

[fluid peak]

Kaori, if you look thats just the world grid in scene view, not in game view, dont worry bout it, quirk of editor

[grand jolt]

it is? ok

[fluid peak]

As long as its not in “game” view its not real

[grand jolt]

thank you SO much! 🙂

[fluid peak]

Np

[unique pumice]

back for some help haha

so someone helped me make a shader graph that was supposed to take the texture of a ui element and blend it with the background to make a photoshop esc layer effect

but im having trouble getting it to register things that are behind it, instead it opting to do the the camera background instead

idk how to get it to register what is behind

[fluid peak]

the texture needs to be set to transparent maybe?

Otherwise it obscures scene color with itself

[thick fulcrum]

@lethal brook a bit of a cheat, but imho the best resource for URP shader graph lighting is Cyan's and he's included an example toon version. https://github.com/Cyanilux/URP_ShaderGraphCustomLighting

[left stump]

Can someone edit a shader for me?! it will be changing a color's to a Render Texture

[regal stag]

Sadly it doesn't work like a GrabPass, in URP at least. It's a copy of the frame between rendering opaque and transparent queues, known as the Opaque Texture. It's more optimised since it's only a single capture per frame, but since it only contains opaque geomtery, transparent objects won't appear in the distortion, including other objects using the Scene Color node. So iDerp's concerns make sense.

@timid minnow For this kind of effect, I'd recommend doing a screenspace blit effect (e.g. https://github.com/Cyanilux/URP_BlitRenderFeature or use unity's one linked in the readme). It draws a quad to the screen applying a material. You can obtain your final render just before post processing (or after rendering entirely) using the Camera source, which is passed in as a _MainTex texture input. Can then distort that using regular UV manipulation when sampling it instead of the Scene Color node, (along with stacking other effects like the lines at the screen edge if you're doing that in the shader too).

[lethal brook]

is it possible to overlay a shine texture onto the eyes that follows lighting

basically a white circle that'll move wherever the light is coming from

like here the shine matches with the light source

but if the light comes from the other direction, it looks off bc the shine isnt matching the light source

[eager folio]

@lethal brook If the shine is a separate texture, you can.

[lethal brook]

yeah it is, so how do i go about doing this?

[eager folio]

You can use lighting direction in a shader, or you can animate it via script(or even manually)

[unique pumice]

@fluid peak the texture is set to transparent I believe

If I set the scene colour to a colour mode and hard code it to purple it works like in photoshop but I can't get the last effect of o trigger from particle systems

[lethal brook]

how do I animate it via script?

I'd like the shine to sorta be on rails around the pupils

[swift loom]

so i'm having some trouble with _WorldSpaceCameraPos not working in the scene view in Unity, is there any way to get around this? It works as it should in the game view but it's like it's completely ignored in the other view. Before I was setting a CameraPos property via a C# script but it was lagging behind the shader, although it worked properly otherwise in both views.

[eager folio]

@lethal brook What rendering path are you using?

If you're using shadergraph, you can attach a rotate node to the UVs you use for the eye shine, with the pivot around the center, and then via script set the angle.

[lethal brook]

i am using shadergraph

[eager folio]

So you'll create a float input on the shader, hooked up into the rotation. Then you can use Material.SetFloat() in your script to change that value.

[lethal brook]

and how do i overlay the shine texture onto the eyes when they already have a material?

also how do i do a script in shadergraph?

[eager folio]

You don't do the script in shadergraph; you expose a property in the shader and then access that from a script you put on your object.

If you wanted to do it entirely inside shadergraph, you can try looking at what they did here https://blogs.unity3d.com/2019/07/31/custom-lighting-in-shader-graph-expanding-your-graphs-in-2019/ to get the light direction.

You'll need to figure out how to convert the light direction to a 2d rotation for the shine either way if you want it to be automatic

Maybe using the screen position of the light instead of the world position, I dunno

[minor pewter]

Can u combine shader code with shader graph in urp ?

Like can you do both in one project