archived-shaders

[bitter lintel]

I'm using this shader to invert the color of anything behind my crosshair

Weirdly enough, i doesn't seem to work on anything other than the camera background color/skybox

I'm figuring that i probably need to make it run after rendering everything else but i have no idea how and where to do that

[regal stag]

That's because the Scene Color node samples the camera's "Opaque Texture" - screen capture after rendering opaques + skybox.
With this kind of method, if you want transparents to be included too, you'd need to handle your own screen capture (via a custom renderer feature, using a blit), sample that texture in shader instead, and draw any objects using it after (via RenderObjects feature)

It might also be possible to get an invert using just transparent blend modes... (Blend OneMinusDstColor OneMinusSrcColor & shader returns white?)
ShaderGraph complicates that a bit as it only has preset blend modes - so this method might be easier with code.

Could apply moss automatically by blending based on normal vector, but otherwise most of the "rock shader" would likely come down to textures being applied.
Posterizing those textures could also help with giving a stylised look - might be easier & cheaper to bake that kind of thing into the texture itself though.

[tranquil wolf]

typically when I apply a gradient shader to a slime it looks like the one on the left but for some reason the right one is acting funky. any ideas?

if I apply the same exact shader it looks like this... might not be the shader then

[molten crown]

Is there someone who knows who could tell me how I could write such a card background shader or has any tutorials / references? :)

[weary oyster]

Very unfamiliar with shaders, currently trying to make a trail renderer be pixelated. I have this so far but I don't know what to do with the UV value at this point, as the tutorial I was watching used a sprite

[weary oyster]

Also getting:

UnityEditor.Graphing.GraphObject:OnBeforeSerialize ()```4 times every time I enter play mode, so a fix for that would be nice

[civic lantern]

Well, you can add a Sample Texture 2D node and plug that UV into it
I doubt that's the effect you are after though, you want it pixelated in screen space?

[weary oyster]

Yeah

[weary oyster]

This is what the video had but it didn't look like it worked for this

[civic lantern]

Yeah this kind of screen-space pixelation is usually done in a post processing (full screen) shader or something like that

No idea how to pixelate a single object though, it's probably possible but a bit more advanced

[weary oyster]

Got started from here #archived-code-general message

Wasn't super sure what that actually meant

[civic lantern]

They probably didn't think you mean screen space

What kind of effect are you after? Any reference image?

I mean I think I get what you want, but just to be sure

[weary oyster]

I mean it's pretty simple, I just want the trail to be pixelated

Nothing else changed

[civic lantern]

It's kinda advanced, but you could search for assets that do that

[restive swallow]

how would one approach having the ring and the glow be seperate colors, think darksabre with black blade white glow, or if i wanted a green circle with red glow

[weary oyster]

Would there be a way to have it so that only that object is rendered with the pixel perfect camera and have everything else use the normal camera?

[civic lantern]

Make a texture where the inner ring uses one color channel and the glow uses another channel
Then sample those colors in your shader and use them to lerp between the actual colors you want

That's one way to do it, anyway

[civic lantern]

Hmm you could try using different culling masks on the cameras

Have the pixel perfect camera render only the layer that the object uses

And exclude that layer from the normal camera's culling mask

[weary oyster]

Ok, I'll try playing with that

[civic lantern]

I believe that the technique is called "camera stacking"

[restive swallow]

Oh right now I'm just using bloom for the glow, would I have to have a texture with the glow itself like a gradient then

[civic lantern]

Yeah

[restive swallow]

Ill give it a shot

[quick scaffold]

i created an urp project for the first time, my shader isn't rendering, do the urp have anything that impact it or i made something wrong?

[low lichen]

OnRenderImage is not supported in URP.
There's no direct replacement for it, but there are ways around it you can find on Google.

[quick scaffold]

oh.

so i can just do via shaders all that urp do

😎

[quick scaffold]

btw thank you for the information

[civic lantern]

By the way your ExecuteInEditMode is in the wrong place, it should be above the class declaration

[quick scaffold]

I found the error something around 10 minutes ago, now it works

thank u

[weary oyster]

Still trying to figure out how make a pixelated trail, can anyone explain what this means? Or if it's even still something I can do

I have little to no shader experience

If that's even what this is lol

[kind juniper]

Yes, but it doesn't really involve shaders.

[weary oyster]

Where should I ask about this?

[civic lantern]

Maybe #archived-urp or #archived-hdrp if you use either of those, or just #💻┃unity-talk

[snow forge]

Mornin' all, quick question, in ShaderGraph what do I need to plug in to the SampleTexture2D nodes UV Input to be able to assign which UV to use in the inspector?

nm, I think I've found the solution using the Keyword Enum.

[shadow locust]

afaik you would need one Sample node per UV channel and then a parameter to basically choose which one of the 4(e.g. with step functions / comparison nodes)

[snow forge]

Well for reference. This works. 🙂

[smoky widget]

What's the difference of when Im doing float2 or Texcoord0?

struct v2f {
    float2 uv : TEXCOORD0;
    float4 vertex: SV_POSITION;
    float3 worldPos : TEXCOORD1;
    DITHER_COORDS(2)
    SHADOW_COORDS(3) // put shadows data into TEXCOORD2
    float2 worldUV : float2;
    float idHash : float;
    fixed4 diff : COLOR0; // diffuse lighting color
    fixed3 ambient : COLOR1;
};

[regal stag]

The parts after : are called semantics - they're basically just strings that connect up the shader input/outputs and hinting to how the variable is used.
There is specific ones defined by cg/hlsl like TEXCOORDx, but afaik these days it supports any arbitary string. So while ": float" and ": float2" doesn't necessarily make sense, it might still work - provided you don't use the same semantic twice that is.

[smoky widget]

Aaah, it's just a name/id like?

I can literally write anything there?

[regal stag]

Pretty much. Though it may be safer to stick to only TEXCOORDx (and SV_POSITION which is special)

[smoky widget]

Why is SV_POSITION special?

[regal stag]

The SV ("system value") means it's set or used by the graphics pipeline somewhere. SV_POSITION is used during the rasterization step to create the fragments - you have to set it so the fragment shader can run.
Might be more info here - https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-semantics

[smoky widget]

I see, thanks

also, could someone tell me whats wrong here?

[Header(If full object color mode)][Space(5)]
[Toggle(_FULL_OBJECT_COLOR)] _FULL_OBJECT_COLOR ("Pain the whole object", Float) = 0.0
_ColorMask ("Color Mask", Color) = (1,1,1,0)
_ColorStrenght( "Color Strenght", Float ) = 0.5

corresponds to ColorMask

for somereason , Color is not deteced, wathever i write, in this specific shader, if it's color it doesnt work

in others, it does XD

[regal stag]

Might be because you're using _FULL_OBJECT_COLOR as both the keyword and property name

[smoky widget]

Where?

Doesn't the toggle name have to be the property next to it?

[regal stag]

It toggles the keyword set under the multi_compile/shader_feature. The actual property can be anything, it's not really used so isn't important

[smoky widget]

But in any case, even If i change it to wathever else, the error still happens were i set color, even if i move it

This still gives error where the ASD is written

[Header(If full object color mode)][Space(5)]
[Toggle(_FULL_OBJECT_COLOR)] _aSDFASDF ("Paint the whole object", Float) = 0.0
_ColorStrenght( "Color Strenght", Float ) = 0.5
_ASD("ASD", Color) = (1,1,1,0)

Okay found the issue and is super wird

[regal stag]

Hmm, is it the extra spaces in the _ColorStrenght property?

[smoky widget]

This is broken

But this is fine

And also this

Notice the {] in main texture

basically, if there's no color, main texture can be without brackets, if there's a color field, main texture must have the brackets

Im not sure why lol

[regal stag]

Yeah the texture definition is meant to have the {}. Bit odd it doesn't error unless a Color is also used

[smoky widget]

quite odd indeed, thank god i found it quick because that's one of those errors that are impossible to find sometimes

[regal stag]

Yeah the unexpected TVAL_ID error isn't very specific 😅

[bitter lintel]

How can i get the camera output just after rendering transparents?

I'm using URP

and ShaderGraph. (Preferably in C# if its possible)

[hollow wolf]

is thaere anyway to convert unreal shader node to unity? i mean i can do that but imagine there's dozen of shader that need to be remake and with high level of complexity it will take too much time, and using plugin such as "unreal to unity" will convert it to shadercode instead of shadergraph or ASE, and my brain prefer looking at colorfull node instead of looking at wall of text

[low lichen]

If you can't find any such tool on Google, then it most likely doesn't exist.

[quick scaffold]

Hi!
I'm new to shader programming, this is the first shader i kinda know what i'm doing

i want the material to be sensitive to the light intensity reaching it

now it reacts to light, but don't change if it is far away

any sugestions?

[low lichen]

It's not always straight forward to get information about lights in a shader. It all depends on how the render pipeline you're using implements it. You appear to be using the built-in render pipeline, which has a less conventional way of implementing real-time lights. Instead of your shader being drawn once with all the lighting information, it's drawn multiple times. Once for the base pass, where you get access to the directional light, any baked lighting and vertex lights. _LightColor0 represents the color of the directional light.

Then for each additional pixel light near the object, another pass is drawn where only information about that single light is passed, and then the pass is blended on top of the base pass additively. This is fine for physically based lighting, since light is additive. But it's not great for toon shading, where you need to accumulate all the light in one pass to then apply stepping to it.

So options are a bit limited in the built-in render pipeline. You can mark all your lights as non-important, which will assign them as vertex lights. Then you'll be able to access the 4 nearest vertex lights in the base pass using unity_LightColor. Their positions are accessable through unity_4LightPosX0, unity_4LightPosY0, unity_4LightPosZ0. It's all documented here:
https://docs.unity3d.com/Manual/SL-UnityShaderVariables.html

[quick scaffold]

ok that very good to know, thank you

u would sugest me to try another render pipeline?

[low lichen]

URP has a better forward renderer, where all the light information is accessible in one pass. I would definitely recommend that if you have no other reasons to stick with built-in.

[quick scaffold]

i had some problems using urp and shaders the first time i tried them together

do u have any material on how to do that?

[low lichen]

URP doesn't support surface shaders, which is a simplified shader syntax for writing lit shaders that work in the built-in render pipeline. You can either use Shader Graph to make your shaders visually, or hand write them as vertex/fragment shaders. There are many resources for Shader Graph, including toon shading. Less so for hand written shaders, as that workflow is still being worked on by Unity, with Block Shaders eventually replacing surface shaders.

[quick scaffold]

thx

[quick scaffold]

is there any big difference between coding for the built-in and coding for URP?

[low lichen]

Shader coding you mean?

[quick scaffold]

ya

[low lichen]

The main differences are related to how lighting information is retrieved. There are also different best practices and naming standards, but these are just guidelines and not required to get working shaders.

One big difference is that multi pass shaders do not work the same way. In built-in, if a shader has multiple passes beyond the recognized pass types, built-in will render each of them in order. URP only picks one main pass from your shader and renders that.

[quick scaffold]

good to know

i really apreciate your help

[smoky widget]

How can I sample the depth texture in unity, or get a z value of the position in a fragment shader to compare it with the depth?

I want to make an intersection shader with an opaque shader

[compact reef]

is there any way to add support for real time spot/point light in vertex lit shader?

[unique moth]

Hey guys can you help me animate emission property of unity material. I want it on and off randomly

[meager pelican]

Well, if you're in SG you'll want to use a conditional node and either emit a color, or emit black. Pass the on/off as a bool (float) on the material properties and use that as a conditional. As in "if emission is off, set color variable to black, else to whatever" and plug that into the emission port. The animation would be controlled on the C# side then. That's easiest level of control. If you want to decide randomly in the shader, that's actually more work for less gain, but you can google random number generation techniques for shaders and set the bool according to that instead.

[meager pelican]

What rendering path are you using?

[compact reef]

Im using forward rendering

actually , my scene is already baked , can I add support for a single realtime point/spot light support(without shadow required) on the lightmapped objects using Mobile/Vertex lit shader?

[meager pelican]

Are you using https://docs.unity3d.com/Manual/RenderTech-VertexLit.html of BIRP?

@compact reef

(that is a forward rendering method too)

[compact reef]

yes

This is more performant

but for some reason i had to use forward though, but i can manage if i need to use legacy vertex rendering for having a realtime spot/point light on lightmapped vertex lit shader

[meager pelican]

Try setting the importance of the light that you want to be realtime to 1. But you'll have to support both baked and realtime lighting, and I'm not sure if that works in that shader. I think it will be a pixel light though.
Yes, you use forward method in that render path.

If you want to mess with it, you can copy the default mobile/vertex-lit shader and customize it.

Not really sure as I don't do much mobile. But others will chime in with better information. But to answer your basic question, it IS possible, it's just a matter of how "manually" you have to do it.

You could also check in #archived-lighting and see if what you want to do is supported by default in that setup.

P.S. the point light is going to be a faster calc than the spotlight IIRC.

The spotlight has to calc a cone, whereas the point light is just source-location, brightness/color and attenuation.

And if you customize a shader, don't forget the forward-add pass.

[swift yoke]

I'm using a standard shader in unity. I am making the scale of an object equal to (-x, y, z). (in the shader, not via transform)
This messes up normals as expected, but then I am setting the normals to (-x, y, z), which I would expect to fix it.
Instead it just fucking dies.

If I map the normal to the albedo colour, when setting x to -x in the normal, the entire object becomes red (indicating the normal of every vert is (1, 0, 1) )
what the hell

[compact reef]

thanks a lot sir, I will dive deep into this, though i lack 95% knowledge about shader writing, I'll have to get a good manual for understanding well about it

[regal stag]

(1,0,1) would technically be magenta - which might just be caused by an error. If it's actually red, that's (1,0,0)... but could maybe also include negative y/z values - might be best to remap values into a 0-1 range for visualising properly.

Make sure you are adjusting the normals themselves and not setting the normal using the position values. Should just be able to normalOS *= float3(-1, 1, 1);

[swift yoke]

sorry yeah I did mean (1, 0, 0)

[swift yoke]

idk man it's not working, I could not tell you why for the life of me

at this point I may just create another set of uvs and use those

[dire sedge]

Does anybody know what "Invalid subscript 'VertexTangent'" means and how I can fix it?

It goes away when I remove either the alpha or the vertex position

[regal stag]

Are you using any Custom Function nodes?

[quick scaffold]

Hi
I found this to be very helpful while i was studying, i will let here in case it anyone want to look
https://docs.unity3d.com/Manual/SL-BuiltinFunctions.html

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

[dire sedge]

No, I figured it out tho. Something with the way shader graph imports shaders in older versions of unity. All I had to do was click reimport on the shader in my assets, every time I make a change

Though I have a problem that I don't know how to go about; I have a camera direction that I want to rotate as much as the object itself is rotated (I'm not sure how to explain that?) How would I go about getting the objects rotation and then rotating the value of the cameras direction?

[grand jolt]

Why can't I adjust the surface inputs in the inspector?

[regal stag]

Bit unclear what you're doing, but you'd typically handle rotations with matrix multiplications. Can pass in the rotation matrix (or inverse) of the object from C#. If by object you mean the one with the shader, could use the model/inverse-model matrix already provided. Can transform between world and object space with the Transform node.

[regal stag]

Shadergraph automatically creates a Material under the graph asset which is locked to using the "Default" values set under the properties (in Graph Inspector window while property is selected in Blackboard).

Or if you want different values than the defaults, can create your own Material asset using the shader. (Right-click graph asset, Create -> Material)

[grand jolt]

Ahh I see. Created my own material now and now it works, ty a lot!

[little nimbus]

how do i make a color filter so my unity project has a limited amount of colors

[quick scaffold]

idk for the entire project, but you can use toon shader in the objects to limit their color palete

how do i make 2 passes in my scriptable shader?

Shader "Unlit/Toon"
{
    Properties
    {
        _Color("Color",Color) = (1,1,1,1)
        _Shades("Shades",Range(1,5)) = 3
        _OutlineThickness("OutlineThickness",Range(0,3)) = 1
        _OutlineColor("OutlineColor",Color) = (1,1,1,1)
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 100
        
        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
        
            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float3 normal : NORMAL;

            };

            struct v2f
            {

                float4 vertex : SV_POSITION;
                float3 worldNormal : TEXCOORD0;
                
            };
            float4 _Color;
            int _Shades;
           

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.worldNormal = UnityObjectToWorldNormal(v.normal);
                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                float cosineAngle = dot(normalize(i.worldNormal),normalize(_WorldSpaceLightPos0.xyz));
                cosineAngle = max(cosineAngle,0);
                float4 factor = floor(cosineAngle * _Shades)/_Shades;
                return _Color * factor;
            }
            ENDCG
        }

        
    }
}

Thats my code until now

[grand jolt]

@quick scaffold

Shader "Unlit/Toon"
{
Properties
{
_Color("Color",Color) = (1,1,1,1)
_Shades("Shades",Range(1,5)) = 3
_OutlineThickness("OutlineThickness",Range(0,3)) = 1
_OutlineColor("OutlineColor",Color) = (1,1,1,1)
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 100

    // First Pass: Toon Shading
    Pass
    {
        // ... [your existing code for the first pass] ...
    }

    // Second Pass: Outline
    Pass
    {
        CGPROGRAM
        #pragma vertex vertOutline
        #pragma fragment fragOutline

        #include "UnityCG.cginc"

        struct appdataOutline
        {
            float4 vertex : POSITION;
            float3 normal : NORMAL;
        };

        struct v2fOutline
        {
            float4 vertex : SV_POSITION;
        };

        float _OutlineThickness;
        float4 _OutlineColor;

        v2fOutline vertOutline(appdataOutline v)
        {
            v2fOutline o;
            o.vertex = UnityObjectToClipPos(v.vertex);

            // Expanding the vertex position along the normal for the outline effect
            float3 normalDirection = UnityObjectToWorldNormal(v.normal);
            o.vertex.xyz += normalDirection * _OutlineThickness;

            return o;
        }

        fixed4 fragOutline(v2fOutline i) : SV_Target
        {
            // Returning the outline color
            return _OutlineColor;
        }
        ENDCG
    }
}

}

[quick scaffold]

// Second Pass: Outline
Pass
{
CGPROGRAM
#pragma vertex vertOutline
#pragma fragment fragOutline

        #include "UnityCG.cginc"

        struct appdataOutline
        {
            float4 vertex : POSITION;
            float3 normal : NORMAL;

        };

        struct v2fOutline
        {

            float4 vertex : SV_POSITION;
            float3 worldNormal : TEXCOORD0;
            
        };

        float _OutlineThickness;
        float4 _OutlineColor;

        v2fOutline vertOutline(appdataOutline v)
        {
            v2fOutline o;
            o.vertex = UnityObjectToClipPos(v.vertex + v.normal * _OutlineThickness);
            return o;
        }

        fixed4 fragOutline(v2fOutline i) : SV_Target
        {
            // Returning the outline color
            return _OutlineColor;
        }
        ENDCG
    }

That's my outline pass, but it is hiding the toon effect, any sugestion?

wait i think i have a good idea

nah it didn't work

i tried using Cull Front to render just the vertices that aren't facing the camera

[grizzled bolt]

@grand jolt @quick scaffold Use file upload or a paste site to share large scripts
Or at least code block formatting

[quick scaffold]

u right

[novel depot]

Any feedback on this ring/realm spawning effect would be great

[dire sedge]

Is it possible to some how get the rotation of the object with the shader applied? Like if I have a gameobject that has been rotated 30 degrees, is it possible for me to get that value or calculate that value in shader graph?

[ebon basin]

https://i.imgur.com/eGKv6Hn.png
Playing around with some screen position shader I've made quite a while ago, though I didn't really notice how the image wraps almost center of the screen. Is there some more specific logic I need to compare with the screen size? I could probably just offset the texture too, but is that the correct method at this point?

I'll probably figure it out tomorrow, but if anyone has made one of these before and has some input, I'd appreciate it ;)

[regal stag]

If you use a seamless texture it might not matter that much where it repeats. But to make it more centered, can Subtract 0.5, do the Multiply, then Add 0.5.
Otherwise if you want the texture to fit the screen width, Height/Width in the Y axis might work better instead?

[smoky widget]

So if I have a texture2d, set it to a materia, and then change the texture in the cpu

Will the texture in the material update? or I need to set it again?

[regal stag]

If you're adjusting pixels on the texture via C#, you need to call texture.Apply() to update the texture data on the gpu
https://docs.unity3d.com/ScriptReference/Texture2D.Apply.html

[smoky widget]

Okay thansk

[ebon basin]

Turns out I was doing more work than I needed. I thought by getting the screen position coordinates I would still need to map it out relative to the user's screen composition (or maybe I was actually trying to tile the texture here idk) but just plugging it directly into the UVs of the sample 2D seemed to work fine.

[crude river]

Is there an easy way to transition a material procedurally from invisible to visible? For example an object has its materials applied, then with the extra shader/material, I can edit all of the existing materials/shaders to for example make it invisible

For example blur the underlying material or invert its colours

[ebon basin]

I'd assume you'd want to make a script and expose each alpha value individually and just dial them down

[crude river]

Is there an easy way to do it with shader graphs?

[ebon basin]

custom attributes

[crude river]

Ah I see, so, how would this be configured given a base shader and a seperate overlay shader?

[ebon basin]

I'd probably just iterate over all available shaders that you want to change the alpha on.

[crude river]

But for using a shader as a transition effect/animation, would that still work?

[ebon basin]

Probably. I mostly do these type of effects with the VFX graph and I usually have some node that changes it over the lifetime of the particles

[crude river]

Alr ty

[ebon basin]

Shader transitional manager script sounds useful otherwise to handle these types of operations

[smoky widget]

Is there a method that I can use to do this?

float sum = weights[0]+weights[1]+weights[2]+weights[3];         
weights /= sum; 

weights is a float4

[ebon basin]

why don't you just make your own utlity method that takes in a float4

[regal stag]

If you mean a method built into hlsl, not that I'm aware of

[smoky widget]

i did that but maybe theres a built in one

okay

[low lichen]

You can calculate the sum of a vector by doing a dot product with float4(1, 1, 1, 1), but I'm not sure if that's faster than doing it by hand. It's performing an extra multiply by one for each channel, but hardware acceleration might still make it faster than by hand.

[ebon basin]

So I've been ignoring this issue for a while, but I assume what's happening here is just how the UVs are mapped (unity sphere and other meshes that wrap around). What's the general idea with trying to minimize this?

Quads, planes, those are all fine.

[dusty creek]

learned about procedural textures (guessing it's done in shaders?) and was wondering where to start learning this. I want to be able to create stylized procedural textures but I have no idea where to start. anyone got any info?

[regal stag]

I assume this is some noise distorting the Scene Color? If you use a seamlessly repeating noise texture (and integer tiling value) it shouldn't have a seam. But yes, depends on how the sphere is mapped to the UVs as well.

There is also alternatives like Triplanar mapping, but more expensive as you're sampling the texture 3 times

[ebon basin]

Yeah, using scene color with the screen position node above with some noise

[crude river]

Is it possible to have 3d gradient noise that looks seamless on things like spheres?

[ebon basin]

I should probably look into triplanar mapping, been ignoring that for a while

[regal stag]

If the noise is 3D you'd sample with vertex positions rather than UV coordinates so wouldn't have seams yes

[crude river]

ah k ty

[regal stag]

If you want fully procedural methods, you'll likely need to look into noise generation. Value noise, Perlin, fbm (fractal brownian motion), Worley/Voronoi, etc.
https://thebookofshaders.com/ has some pages about noise.
Shadertoy might also be good for examples (but is glsl)

[dusty creek]

thanks, time to get to work

[open badger]

Hi, I'm very new to shaders and im facing a slightly confusing problem where the shader seems to work in the editor perfectly but becomes black in-game.
My goal is to have the eye's shading render as multiply blending mode.

Thanks for any help in advance <3

[grizzled bolt]

Shader Graph doesn't really support images, so you may need to do some hacky extra steps though I'm not sure which ones
https://forum.unity.com/threads/shader-graph-ui-image-shader.628111/ here are some potential solutions
Canvas type shader graph was added in URP 16 / Unity 2023.2.+

[open badger]

Ah alright, I'll try to look into it thank you!
Apparently changing the canvas' rendering mode from "screen space - overlay" to "screen space - camera" seems to have worked but it makes working with the ui in the scene editor almost impossible due to the size hehe

[dusty creek]

for fully procedural textures, should I use shadergraph or hlsl code?

[crude river]

Why is my emission not working with this lerp node? when connected, it comes out blue/inverted colours. It's labelled HDR, but only takes 3 inputs where I'm using lerp on 2 HDR colours

[grizzled bolt]

"plane distance" controls the size of the UI objects relative to other gameobjects
Though iirc it also determines the depth of the UI relative to gameobjects

[regal stag]

Either would work. Generating noise typically requires loops, but could still be done in graphs via hlsl inside Custom Function node. There is also already some procedural noise options built in to Shader Graph. It has nodes for Voronoi, Gradient Noise (perlin.. or maybe simplex, can't remember) and Simple Noise (value + fbm iirc)

[dusty creek]

oh right custom functions, then I'll try making my own noise

sounds fun

[regal stag]

Inverted colours suggests you need to clamp negative values. Either via Saturate (clamps between 0 and 1), or Minimum with 0 (if you need to keep values over 1 for HDR reasons)

[fiery moth]

I wrote a sobel filter shader for edge detection. However, I am using a plane with a ground texture to draw my ground, and when my objects are resting on the ground plane, the depth texture is drawn full white by the ground plane, and the edges aren't detected. If I delete the ground plane, the depth texture is mostly black but with my objects drawn in white, and my edges display on objects as desired. My desired outcome is to have my objects drawn with clean edges, and to ignore the ground. Is it possible to make the ground plane not draw to the depth texture? Or draw its depth as being further away than it really is? Thanks.

[crude river]

Ahh I see, ty.

[regal stag]

If you're in URP removing the ground layer from the default opaque layer mask at the top of the Universal Renderer asset and rendering it with a RenderObjects feature might remove it from the depth texture. (Assuming URP is doing a depth-prepass)

[ebon basin]

https://i.imgur.com/2o2USfk.png
Triplanar node does seem to eliminate the hard seam with some adjustments, but how do I actually scroll the texture now if it's using world coordinates? Plugging time directly into the position (from the tiling node) creates undesired effects like flickering or stretched uvs. Looking more for a smooth scroll effect. The tiling between the tiling and offset node and the innate tiling of the triplanar node seems to be the problem.

[fiery moth]

Is there a way of doing it in the built-in render pipeline? Migrating my project to URP is too much work right now.

[fiery moth]

I accidentally solved it. My plan was to write a custom unlit shader that passed through color, but wrote depth to depth_max. But for some reason just passing through the color and ignoring the depth was enough to fix the depth issue. I guess if it's not being written, it defaults to black in the depth texture. That's good enough for me, as this is not a serious project.

[crude river]

I currently have this linear gradient based on object UV. Is there a way to make it spherical from the center of an object, or a given world coordinate?

[ebon basin]

Do people clamp / check bad values (dividing zero and zeroed direction) with the shader graph. How much of an impact would that really matter?

unity does seem to catch the errors as my shaders don't seem to be crashing lmao

In terms of user input that is for exposing custom variables

[low lichen]

Dividing by zero in a shader will result in NaN in most cases. How bad that is depends on how it gets used. It's often an issue in post processing, where data from previous frames might be used and you get what's called NaN propagation. Post processing has an optional step to filter out NaNs as a last step, but it's best if you can avoid generating them in the first place.

[strange basalt]

find it does not come up often, since its not often i end up exposing something that is divided

[ebon basin]

I thought shader graph had ways to create ranges or was I dreaming

making a giant master shader here for some distoration and about 80% of these variables would probably break the shader if they were 0, but negative and positive values are fine

[strange basalt]

yeah in code and shader graph you can create ranges that show up as sliders in the ui

[ebon basin]

Ah, ok yeah I see it im dumb

where's the exclude 0 from all ranges though ^^

[strange basalt]

you set the start and end of the range

[ebon basin]

Yeah, but the thing is I don't mind negatives or positives, but zero absolutely breaks a lot of it

[strange basalt]

do the same thing without the division

or decide how you want to handle zero then

[ebon basin]

true, i guess I'll just add a fallback node everywhere

it's not just dividing too, but 0 direction

[strange basalt]

really never hit run into it very often

and since its rare things its fine to just have it be a error

just give a sane default

[civic lantern]

Yes, use Distance

[crude river]

Do I use position and a blank vector 3 for the inputs?

For a sphere around 000

[civic lantern]

Would not really work with a sphere since every point on the sphere is the same distance from its origin

Maybe you want Fresnel?

[civic lantern]

Actually yes I think I misread, this will work if you use zero and a custom position

[crude river]

Ty!

[smoky widget]

If i set a buffer to a material that doesn't have a reference to the buffer, what happens?

[tulip carbon]

Hi. Does anyone know a way to use shadergraph to make custom decals (for the decal projector)? Like, how do I get the "fade angle"? It is to like make it so if the angle is greater than a value, make that part different colour basically

[desert ember]

Chidori Shader in Shadergraph in XR on Quest3 🙂
https://www.youtube.com/shorts/UUMJWFfA3_4

[crude river]

Is there a way to combine shaders? For example I have one that applies a procedural effect to turn an object invisible, but it needs to show the underlying material

[grizzled bolt]

Fundamentally not
For that you may need to render the mesh twice with different shaders for the duration of the effect, which you could do with URP's Render Objects feature for example

[smoky widget]

What's the common practice regarding shadows and LODs?

Is it usually use the same lod as the main object, or use always the lowest lod to save performance?

[crude river]

Ah k ty

[grizzled bolt]

Depends on how important you consider high quality shadow casters and what the performance cost adds up to, so there is no any one answer
Each shadowmap needs to render the meshes in the caster's frustum again anyhow
Not a shader question

[crude river]

Using the position input, I want progress to be a value 0-1 that controls the gradient coverage of an object. Is there a way to get the bounds of the object in a way that 0 moves the gradient all the way down, and 1 goes all the way to the top? Different object sizes and scales seems to change the ratio needed although I don't know how to use the object node

[deep helm]

What is wrong with the line:
fixed4 col = fixed4(0, 0, 0, _VisionMap[0]); ?
Error says that " incorrect number of arguments to numeric-type constructor", but I don't understand why. It is obvious that I use _VisionMap in some incorrect way, but I have no idea by what reason

[ebon basin]

_VisionMap[0].w maybe? Not sure what value you want

fixed4 is four fixed values, but it seems like you're taking an index of your float4 array and giving it a float4. Oh, also it's a buffer, don't you need to use sizeof?

[deep helm]

Oh, my big apologies - I need StructuredBuffer<int> there. For uknown reason I couldn't see that mistake for 3 hours...
Sorry again

[ebon basin]

ah ;p

[wild delta]

{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _Color("Color", Color) = (1, 1, 1, 1)
    }
    SubShader
    {
        Tags { "Queue" = "Geometry" "RenderType" = "Opaque" "LIGHTMODE" = "FORWARDBASE" }
        LOD 100
        ZWrite On
        Blend Off
        Fog { Mode Off }
        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_fog
            #include "UnityCG.cginc"

            struct appdata
            {
                half4 vertex : POSITION;
                half2 uv : TEXCOORD0;
            };

            struct v2f
            {
                half4 vertex : SV_POSITION;
                half2 uv : TEXCOORD0;
                UNITY_FOG_COORDS(1)
            };

            sampler2D _MainTex;
            half4 _MainTex_ST;
            half4 _Color;

            v2f vert(appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                UNITY_TRANSFER_FOG(o, o.vertex);
                return o;
            }

            half4 frag(v2f i) : SV_Target
            {
                half4 texColor = tex2D(_MainTex, i.uv);
                half4 finalColor = texColor * (_Color * UNITY_LIGHTMODEL_AMBIENT);
                UNITY_APPLY_FOG(i.fogCoord, finalColor);
                return finalColor;
            }
            ENDCG
        }
    }
    Fallback "Mobile/Diffuse"
}```

[wild delta]

New to shader writing and seeking performance optimization help! Looking for guidance on enhancing my shader's efficiency while ensuring essential elements like Textures, Color, Texture UVs, and Ambient Lighting remain intact. Open to suggestions and tips from the community. Thanks

[deep helm]

Doesn't this SubShader tag makes the shader use 4-th value to set the transparency in frag?

Or may be I need something more for that?
As at the moment it doesn't matter what albedo value I set - it is always fully opaque

[amber saffron]

The "really" required thing to have transparency is to use blending : https://docs.unity3d.com/Manual/SL-Blend.html
The usual transparency is done with the following blend command : Blend SrcAlpha OneMinusSrcAlpha

The other very usefull thing is the rendering queue of the object (when is it rendered compared to others).
Usually, transparent objects are rendered after the opaque ones. This is done with the tag "Queue" = "Transparent https://docs.unity3d.com/Manual/SL-SubShaderTags.html

Finally, you probably want to disable ZWrite : https://docs.unity3d.com/Manual/SL-ZWrite.html
ZWrite Off

The rendertype is not really necessary.

[wild delta]

@amber saffron can you also give me some tips if you don't mind

[amber saffron]

That shader is already pretty minimal, I do'nt see what you'd want to optimize here 🤔

[wild delta]

the data types?

[amber saffron]

You could remove the Transfer and Apply fog functions, as well as the Fog interpolators in the v2f struct, as you've explicitely disabled fog on the sub shader

[wild delta]

I would like if you give me some tips regarding performance.

[amber saffron]

Oh boy, that can be long and you'll probably find good resource on the web for that, that will also be more readable than discord XD

Your shader is already doing almost nothing, so I can't really git tips on this one.

But in general, if you want to optimise a shader, just think of how many math operations you're doing there. Less operations is faster. And some "cost" more than other ( add<mul<power<sine for example).

Loops and branches (ifs) can be tricky but are not necessarly to avoid.

On mobiles, avoid textures fetches indirections (use a texture information to deform an other texture) is possible, and when it make sense, offload some calculations from the fragment shader to the vertex shader.

And on top of that, the shader compiler also does it's own optimisations that is a bit of a black box to me 😅

[wild delta]

Thanks! i appreciate it.

[deep helm]

Thanks a lot for your answer! Will try it out a little later today

[thin crater]

Hi, is there a way to blend values between normal vectors?

I'm using them in a texture but the effect I'm having has a clear step between every face

[amber saffron]

The easy and ugly way is : normalize( lerp(normal1, normal2, t) )

[thin crater]

How do I get normal 1 and 2? I'm using a normal vector and there's not a position input so I can't have more normals

[amber saffron]

🤔 What are you trying to do ?

[thin crater]

Creating a water shader that goes towards the shore. Using flowmap-like method to offset a voronoi noise, it works really well. As a normal map I'm using the mesh itself (water is a perfect copy of the terrain mesh but height position is fixed by a variable).

The problem is that faces are pretty big (terrain is huge), and you can see where the normal changes a bit and the offset with it

You can see it here

every line where the noise repeats is a face of the mesh where the normal changes a bit

if there was a way to blend between these normals...

Right now that's how I get my normal values

[amber saffron]

Are you using the normals as input for that voronoi ?

[thin crater]

(simplified the double negation ahah I noticed that now)

Yes

[amber saffron]

Ah, ok, so the normal is used as a "slope" right ?
does the base mesh have smooth normals ?

[thin crater]

Yes

for the slope

sadly the mesh is built at runtime (it's a procedural world) and I found no way to set the mesh to have smooth normals via code 😦

[amber saffron]

Well, that's the issue here then : the mesh polygon don't share their vertices, and as such, don't have smooth normals between faces. You can't really do anything to fix this (other than some very complex offscreen rendering to "blur" the normals)

The best solution is to find a way to smooth the mesh.
Did you do the mesh generation yourself or is it a package ?

[thin crater]

I did it myself following one of the Sebastian Lauge videos

[amber saffron]

I'm a bit lazy to check all his videos again, but I'm pretty sure he showed something to smooth normals in the terrain generation serie

An "easy" fix would be to calculate the normal from the height function when generating the mesh. As all the vertices with the same position will have the same normal, it would end up smooth.

Oh, and if you call Mesh.RecalculateNormals , don't forget to remove it, else you'll loose those

[thin crater]

Bingo!! I forgot that video

tysm, gonna look it now 😄

[thin crater]

It worked 😍 everything was already "smooth", I just forgot to remove the recalculate normals, wonderful!

[native frigate]

Hello, is there any way to be able to edit the HDR color from the shader graph directly from the material inspector? Currently I can only do that from the graph inspector and it's a bit tedious and the material inspector one is greyed out

[amber saffron]

You need to create a new material using this shader, you can not edit the default material that is generated with the shadergraph file

Either new material, or a material variant from the default material

[native frigate]

ohhh ok, im a total beginner at these so yeah xdd thanks a lot

[thin crater]

Hi, if I create a mesh at runtime and set it to my water object it doesn't store normals (even if it correctly reacts to light), but if I save the mesh of the same object to an fbx (using fbx exporter package) and then reimport it - the same mesh that had no normals- it works. Why? It seems like the mesh generated at runtime has broken normals.....

[thin crater]

however normals seems to work for light (it doesn't wok with the Normal Vector node). For example if I use recalculateNormals before exporting to fbx, the exported mesh will have the normals recalculated. I'm really confused right now

[fast ravine]

Can anybody recommend a specific Pixelshader?

[compact reef]

Hey Remy, Can you please tell me which is more performant in case of lightmapped scene with no realtime lights
"mobile/unlit(lightmapped)" or "mobile/vertex lit"?

[compact reef]

bump

[amber saffron]

To do what ?

[amber saffron]

You shouldn't ping me out of nowhere when other people may be able to answer you ...

The first one is for light map only, the second for dynamic lights.
So the first is probably a better choice

[compact reef]

after baking lightmap on the scene, vertex lit shader based objects do not get affected by any realtime lights

they just use the baked lightmap on the object and nothings else,... so in case of that, which one wins? vertex lit? or unlit (lightmapped)?

[compact reef]

im sorry

[amber saffron]

Unlit .... That's what I said

[compact reef]

thank you

[amber saffron]

That's very strange. If the mesh reacts properly to lights, it means that it has normals.
For the fbx version, maybe normal are generated at import or export

[thin crater]

Nevermind, I fixed that

[fast ravine]

Top Down 3D models in 2dspace. I want the models to blend a bit more into one artsyle if that makes sense

[thin crater]

Normals actually had no value, the exporter created them. I fixed my bake normals code and now everything works 😄

[amber saffron]

It does, but depending on the art style the choice can range from a regular my shader with hand made textured to a custom toon with cross hatch shadows 😅
There is no one solution fits all here

[fast ravine]

Well, I am trying to keep the models in the same artstyle currently they all look like, what counted as "realistic" 10 years ago. What is a "my shader"?

[amber saffron]

That's things like bioshock infinite, ac black flag, GTA v , the last of us...
I'm not sure PBR was already a thing, so finely authored Phong materials with diffuse / normal / specular probably

[compact reef]

the first one uses legacy/reflective/vertex lit shader which uses a given cubemap texture, and define the reflective area by alpha channel of the base texture

the second one is the unlit shader which takes the environment baked reflection probe for lighting using unity_SpecCube0, unity_SpecCube0_HDR, Object2World, UNITY_MATRIX_MVP , it uses a normal map too , to detail up where to draw the reflections

now there is two question

1. which one will be more performant

2. why the reflection of first one looks so off, where both are reflected from a same skybox texture

[amber saffron]

1. Probably 1 if
2. the reflection is computed in the vertex shader

[compact reef]

i have taken the second shader from here, the balloon cat

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

[compact reef]

is that any issue with 'hdr' or something? actually i was using diffuse reflective cubemap too...but result are still same....dull looking reflection compared to the second picture...

[amber saffron]

Maybe the alpha used to mask the reflection dims it to much ?

[compact reef]

i will experiment it increasing the intensity of alpha channel

[compact reef]

still, doesnt look reflecting at all

i think it lacks HDR

or something?...as the shader uses texCube

how could i make the cubemap looks like this, do i have tlo input any macros or something?

is that something im missing ? , this is the frag of that shader which is showing accurate reflection

[smoky widget]

Does LOD cross fading work with DrawMesh Instanced Indirect objects?

Because Im not sure If i have to add the parameters to the shader, or use my own implementation

[thin crater]

Is there a way to access position of a vertex before modifying it in the shader graph?

so you set it to a static height but you can still access its previous height

[regal stag]

Can pass the original position through a Custom Interpolator added to the Vertex stage outputs. See https://www.cyanilux.com/tutorials/intro-to-shader-graph/#custom-interpolators

[thin crater]

Ty

[regal stag]

Maybe possible with regular GPU instancing of GameObjects, but function calls like DrawMeshInstancedIndirect only uses a single mesh parameter so I don't see how LODs would work, unless you use multiple function calls and dynamically change the instances that need to be rendered.

But for the cross fading itself, I think the shader just needs to have #pragma instancing_options lodfade to properly batch the same meshes with different fade factors.

[smoky widget]

Maybe possible with regular GPU

[echo flare]

Why are normal map textures twice the size of regular textures when imported to unity?

If I turn compression off, it's like 40% larger still

[kind juniper]

Probably using different color format.

[copper edge]

Hey, i have a custom shader with motion vector pass. i was wondering if there is a way to generate textmeshpro font asset using a material from this custom shader.

[compact reef]

I was comparing between Mobile/Diffuse shader and Mobile/Unlit(Lightmapped)

I will show the comparison of their vertex and fragment parts

mobile diffuse vs unlit(lightmapped)----fragment

mobile diffuse vs unlit(lightmapped)-----vertex part

in the fragment calculation , diffuse seems faster based on gpu cycle

and in vertex calculation , unlit (lightmapped) seems faster

which one should i use for better performance?

[low lichen]

It appears you're comparing the fragment shader of the unlit (lightmapped) shader again in the vertex comparision. It's the same numbers and it doesn't make sense for its vertex shader to have texture instructions.

If you're wondering whether a vertex lit shader is more or less expensive than a lightmapped shader, you can't just compare their instructions. A texture instruction is more expensive if it's sampling a higher resolution texture, so you have to consider how large your lightmaps need to be.

Whether you need to pay more attention to the vertex shader vs the fragment shader depends on the screen resolution you will be rendering at and the number of vertices in your scene.

[compact reef]

sorry ...i mistakenly sent the same image

[compact reef]

my mistake...probably i have comapred with something else than unlit (lightmapped)

here is the exact one

definitely , unlit(lightmapped) is faster

[low lichen]

The "Mobile/Unlit (Supports Lightmap)" has two passes: one that is not lightmapped, so it's just an unlit shader with a main texture, and a lightmapped pass that samples both the main texture and a lightmap texture. You appear to be analyzing the first pass.

[compact reef]

i understand the factors of resolution and vertex counts ...as in my scene , these are constant and unchanged , that's why i was comparing between shaders

[compact reef]

yeah i know

i have a simple trick, i will first bake lightmap

and after baking i will just remove the first pass

which i do not need

and there only will be the pass that will hold the lightmap along with the main texture

[low lichen]

Okay, but the screenshot you just posted shows only one texture instruction, which means it's not the lightmapped pass.

[compact reef]

as my scene is completely baked , no realtime lights

[low lichen]

Removing the unused pass won't save any performance, it's unused.

[compact reef]

I see probably im missing something here , let me have a quick test again

got it , actually there was another set of vertex and frag glsl in the compiled code which i missed

this time i will only keep the lightmap pass and test the gpu cycle

(note; if you are curious how to test these, im using "mali offline compiler")

[low lichen]

That's fine for getting a general idea of the complexity, but you shouldn't use it as the final judge of which shader is more expensive. That can only be determined by testing the shaders on the devices you intend to target, with the textures and scene you intend to use.

[compact reef]

arent unlit shaders better?

[compact reef]

I had to know one more thing , How can I make the existing mobile/unlit(lightmapped) into an unlit cutout (lightmapped)...(i dont know much about writing shaders)

would you tell me how to just make it "cutout" keeping everything unchanged?

[low lichen]

Well, as you can see in the instruction count of the mobile diffuse shader, it only has 2 arithmetic instructions and one texture sample. You haven't shown the numbers for the lightmapped unlit fragment shader, but I suspect it's quite a bit more than that. That's because the vertex lit does most of it's work in the vertex shader.

If intend to use this shader in, for example, a mobile VR game, optimizing the fragment shader is critical, because you're rendering at very high resolutions. You can always make the models lower poly to reduce the number of vertices. You can also lower the render resolution to reduce the cost of the fragment shader, but that's a more immediately noticeable downgrade for the user.

[long rune]

why does baking a scene in unity increase the shader variants of the same shader?

[low lichen]

You sample the main texture and do discard; if it's alpha is less than some threshold, which you can expose as a property or have hardcoded.

An example of what that might look like:

half4 color = tex2D(_MainTex, uv);

if (color.a < 0.5)
{
    discard;
}

[low lichen]

Because light baking makes use of a different pass in each lit shader, called the Meta pass.
https://docs.unity3d.com/Manual/MetaPass.html

[compact reef]

is it something similar as "clip"?

[low lichen]

Yes, clip is a function that uses discard internally. It's a quicker way to do if (x < 0) { discard; }

So if you wanted to use clip, you would have to subtract the alpha by the threshold, so alpha below the threshold becomes less than zero.

clip(color.a - 0.5);

[compact reef]

I have added these 3 things in the Mobile/Unlit(Lightmapped) shader

[compact reef]

can someone just tell me how to add alpha to this shader? , not the cutout, just adding Blend src or something like thatg
https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Mobile/Mobile-Lightmap-Unlit.shader

[amber saffron]

#archived-shaders message

[low lichen]

👆, also good to note that making these changes, mostly the render queue and ZWrite changes, will make the shader no longer suitable for opaque rendering, even if the alpha is set to 1.

It's possible to make a shader that can be configured for both opaque and transparent rendering, with a bit more work.

[compact reef]

is that for less overdraw?

i was going to use cliping , but i saw it has impact on performance somehow

that's why i choose the blend src or something like that to implement on the shader

[low lichen]

Without z writing, objects will be drawn incorrectly unless drawn specifically in back to front order, which Unity only does for objects in the transparent render queue.

[low lichen]

Materials that use alpha clipping should be rendered after opaque objects, but before transparent. There is a render queue range for this called AlphaTest, which you should set on any material that uses alpha clipping.

[random pond]

Hi guys, I have a shader graph for my health bar, I need to add these nodes together like so (image)

but when i change color from RGB, the colors overwrite each other, any help?

[low lichen]

From looking at these previews, I don't see why the red stripe shouldn't appear in the final Add node, except if the black color is actually negative instead of zero.

[random pond]

assuming it was negative, what could I do about it?

any nodes I can plug in and test?

[low lichen]

You could put a Saturate node in between the bottom Multiply and final Add node.

That will clamp the values between 0 and 1.

[random pond]

fantastic! thank you, works

[random pond]

for my knowledge, what causes the black to be negative? (what does this mean)

here is essentially what I am doing

theres another bit that plugs in that forms the lines on the HP bar, maybe that could be the cause (edit: the problem is in the screenshot i think)

ohhh, a double subtraction?

[low lichen]

I just mean that somewhere, a negative value is being inputted into that bottom Multiply node, and Shader Graph can't show that in the preview as anything other than black, which is the same as zero.

[compact reef]

would just writing "blend src aplha" under the tag , do the job? it was an unlit(lightmapped) shader , i tried just putting on one those blend spell ...but the gameobject isnt affected by alpha

[low lichen]

The shader is also hardcoding the output alpha to 1, which you'll have to remove.

[compact reef]

how...actually whenevr i try to tweak any shader based on my own understanding , i almost always get to see pink sunrays on my face.,...please tell me where to make change in the code specifically

[low lichen]

At a glance, just removing this line would be enough:
https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/6a63f93bc1f20ce6cd47f981c7494e8328915621/DefaultResourcesExtra/Mobile/Mobile-Lightmap-Unlit.shader#L104
But actually then alpha would never be assigned. We want to assign it to the alpha of the texture. So you would replace this line with:

col.a = tex.a;

[compact reef]

thanks a lot sir

[worthy pine]

hey i wanted to make a cubemap sahder liek in boneworks or bonelab, my proplem is that the teh differnt faces of the cube or mesh have a other persektive, but i want to make it so there is only one

heres teh shader script for now

also sry for my bad grammar

[low lichen]

Instead of worldRefl, which is the view direction reflected off the normals of the mesh, you want just the view direction. That's accessed through the float3 viewDir variable in surface shaders.

[worthy pine]

thx alot

now how do i add a mask? for example a screen or grid mask? when i tried it the mask was like on the cube map

[low lichen]

You can sample a grid texture the same way you would sample a regular texture that goes on the mesh, then you blend it on top of the cubemap somehow, such as by lerping using the alpha of the texture, or by multiplying it together.

[worthy pine]

ah oke ill see if that works

did i make an error again?

[brittle bolt]

Hey everyone, I am using the Triplanar Texture node to create some materials. I am finding that on very low poly surfaces, the triplanar material creates a ton of seams. I am importing them with smoothing groups, but the triplanar does not behave as expected. Creating lots of seams on different faces

[grizzled bolt]

Triplanar usually uses the angle from mesh normals, so an edge with hard split normals won't have a smooth transition

[brittle bolt]

Strange, so in this case the entire mesh besides open edges would need to be a soft edge? I had not encountered that in unreal if im remembering correctly

[compact reef]

is it possible to achieve that world reflection on the alpha color channel of the base texture (instead of using any normal map) in "Legacy/Reflective/Vertex Lit " shader(https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Reflect-VertexLit.shader) instead of just using a sampler cubemap inside it as usual?

what is actually needed to change in that shader in quick to achieve like that?

[smoky widget]

How can i make a shader whre I can enable and disable culling with a toggle?

[smoky widget]

Im tyring this, but it doesnt work
Cull [1 - _CULL_BACK]

[regal stag]

You can use a property in the Cull operation.

// in Properties :
[Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", Float) = 2 // defaults to "Back"
...
// (in SubShader/Pass)
Cull [_Cull]

[smoky widget]

Aaaah, thank you+

[regal stag]

Similar things work for other ShaderLab operations. I've got a list here - https://www.cyanilux.com/faq/#shaderlab-operation-properties

[compact reef]

bump

[brittle bolt]

I am finding that I am getting seams even when adding more geo to relieve tension on hard angles, and with the mesh completely smoothed

left area is with extra bevel added to help the tension, and right is very steep angle with smoothed normals that creates sheering

[grizzled bolt]

It doesn't look smoothed
Also the weird shadows make it look like you might have inverted normals

You could take another photo with default material to rule out the shader

[compact reef]

bump

[compact reef]

what is the procedure to do that

[slender ore]

Hello there, I have created a sky-with-stars shader graph and applied it to a sphere that is 1000x1000x1000. Everything would be great if not for a flickering that is constant with camera movemnt. Also, flickering happens only when camera is far away from the edge of the sphere. I am assuming it is caused by the huge amount of dots rendered on a screen but have no idea how to fix it.

[grand jolt]

How do I make only the candy cane that is flying glow red?

Here is my video which shows it

I can't use post processing, as it attaches bloom to everything

I can't add a box collider since the candy cane moves

[karmic hatch]

I think it's because of how small each dot is. If it's pixel-sized, then some of the time you land on the dot, other times you don't, and so it flickers. You can use screen-space derivatives to estimate how far you are from the dot centre in pixels and then make a star that doesn't flicker

[slender ore]

Do you know any examples of this system that I can look up?

[karmic hatch]

It's basically anti-aliasing, there are lots for lines and you would just want to apply the ideas to a point instead

[cloud flint]

I'm trying to make a moving shining effect like the image for texts. but when I make shader for text, the shader effects the whole font texture. I'm kinda stuck is there a way to make it so shader effects only what is written with the text

[compact reef]

here is a simple unlit shader that has support for LOD Crossfade

Could I just get a quick suggestion to modify Unity's "Mobile/Unlit(supports lightmap)" to have this LOD crossfade feature?
https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Mobile/Mobile-Lightmap-Unlit.shader

please...someone

[slender ore]

I have tried making anti-aliasing but with no effects

[karmic hatch]

You can probably do something like this:

float r         = Voronoi(uv);
float deriv     = ddxy(r);
float rInPixels = r/deriv;
return smoothstep(2,0,rInPixels);

(in shadergraph)

[compact reef]

Unity has a default shader "Legacy Shader/ Decal" you can use it to have such shiny looking overlay texture on your main texture

[compact reef]

someone please look into this issue ...

[low lichen]

Have you made an attempt to do it yourself? Look at the differences between your shader and the LOD crossfade shader. What's different? What appears to be crossfade LOD related?

[compact reef]

I tried adding these things to the shader

[compact reef]

and got this

[low lichen]

Do you notice anything different about how the LOD shader deals with SV_POSITION?

[compact reef]

I have pretty less knowledge about shader basic( im sorry , I didnt have any choice but to collect some quick info instead starting 3-4 years learning shader writing...

[compact reef]

that crossfade shader has no lightmap pass...but this one have...now im thinking , how could I implemnet in this one by adding or removing some lines

[low lichen]

I'm not asking you to understand what the difference is, just whether you can spot any difference. As in, if you look at where SV_POSITION appears in your shader vs where it appears in the LOD shader. Do you notice a difference in where it appears?

Because the error you got tells you that SV_POSITION and VPOS are considered as duplicates.

[compact reef]

here it is

[low lichen]

And where is it in the LOD crossfade shader? Also in v2f?

[compact reef]

here it is

[low lichen]

Do they appear to be in the same place in both or is there a difference?

[compact reef]

it seems different but , i dont have any idea about these out , float, outpos things 🥲
that's why i have sent the source of the mobile/unlit (lightmapped) shader

[low lichen]

If you have no interest in gaining an understanding of what it is you're trying to do, if you only want it done, then I would suggest you try using something like ChatGPT instead. This problem is simple enough that even the free version should be able to spot the difference and piece it together.

[ionic cobalt]

Good morning - So I am getting an error when I compile my shader with Vulkan
glslang: 'gl_PointSize' : identifiers starting with "gl_" are reserved

[ionic cobalt]

D3D Works just fine, no issues - this only happens with Vulkan

[brittle bolt]

No inverted normals, checked in maya. The right side has a ledge that is smoothed, and it creates that shearing you see, the left has a hard edge on the ledge, which stops shearing but the triplanar projections dont line up how id expect

I ended up adding a bevel and smoothed those edges, it seems to do the trick

[tawdry thistle]

Say, is there an easy macro to compile my hlsl shader code depending on it being displayed in play mode or edit mode? >_> Something like SHADERGRAPH_PREVIEW but for the editor windows during edit mode.

I've got a shader which only displays valid data during runtime and because of that it's pitch black during edit mode which is kinda annoying to work with 😄

[ripe egret]

Hello, im developing a procédurale video game map and I have a problem with shaders. (I’m new on unity) . I made perlin’s Algorithm and due to the height of my map, I want to applicate a specific shader. (Water, sand, grass…) but, a mesh can only have a single shader. So what am I supposed to do if I want to applicate different shaders to my different height of my map. For now, I just applicate a color to my different height. Thank you for answer ! 🙂

[tacit parcel]

Try using screen position instead of UV coordinate

[compact reef]

can I have realtime lights support on an unlit shader by using autoLight.cginc?

[grizzled bolt]

The texture shearing is from bad UVs, not from smoothing or normals in general
Triplanar mapping doesn't rely on UVs so you should be fine just by smoothing the normals of whole mesh
Beveling will give you more normal vectors for more control, naturally

[rare wren]

Not sure about that one, but there is a git repo with custom toon lighting in shader graph which has custom URP nodes

[amber saffron]

If you want to apply different shaders to you mesh, you need to assign different materials to different polygon groups (sub-meshes).
Or, you need to make a shader that blends all the textures you want based (let say) on the Y coordinate of the mesh.

[craggy vine]

Would anyone here be able to provide help? I am currently struggling with trying to create convey's game of life using .Compute shaders and im very close, but for some reason im struggling to comprehend, if the color given to living cells does not have its red maxed out, the simulation breaks and everything is all black.

As a forewarning i do not entirely understand how the current scripts work myself as I am a student and our teacher has been... rather unhelpful.

C# code: https://hatebin.com/qblgiyflqn

Compute shader:

#pragma kernel CSMain
#pragma kernel InitFullTexture

RWTexture2D<float4> OutputTexture;
Texture2D<float> InputTexture;
float4 LivingCellColor;

[numthreads(32, 32, 1)]
void CSMain(uint3 id : SV_DispatchThreadID)
{

    int x = int(id.x);
    int y = int(id.y);

    int count = 0;
    for (int i = -1; i <= 1; i++)
    {
        for (int j = -1; j <= 1; j++)
        {
            if (i == 0 && j == 0) continue;

            count += InputTexture.Load(int3(x + i, y + j, 0));
        }
    }

    bool currentCellState = InputTexture.Load(int3(x, y, 0)) > 0.5;
    bool nextState = false;

    if (currentCellState)
    {
        nextState = count == 2 || count == 3;
    }
    else
    {
        nextState = count == 3;
    }

    // Use LivingCellColor for living cells
    float4 finalColor = nextState ? LivingCellColor : float4(0.0f, 0.0f, 0.0f, 1.0f);

    // Write to the output texture directly using OutputTexture[id.xy]
    OutputTexture[id.xy] = finalColor;
}

[numthreads(8, 8, 1)]
void InitFullTexture(uint3 id : SV_DispatchThreadID)
{
    if (id.x % 7 == 0 || id.y % 3 == 0)
        OutputTexture[id.xy] = LivingCellColor;
    else
        OutputTexture[id.xy] = float4(0.0f, 0.0f, 0.0f, 1.0f);
}```

I would greatly appeciate any help... Im starting to get desperate 🙇‍♂️

[agile storm]

why doesn't my camera show the render texture like in this timestamp of a video?: https://youtu.be/W07TrTq3a4o?t=376 i attached the same script onto the Main Camera and added the necessary scripts. i have a different unity version

[thin crater]

Hi! I'm moving a custom shader from a project to another to test how it exports works. For some reason depth texture is not working even if it's enabled in the URP settings, and I'm almost 100% sure this setting file is the correct one (it's the only one activated in quality setting and it's the one selected in the "Graphics" setting, inside player's setting)

Also, camera has depth texture enabled

What am I forgetting?

version of both projects is 2022.3.9f1,

Ok - weirdly enough doesn't matter which setting I turn off on my main project, depth texture stays on o.O it's the opposite problem

[low lichen]

Because OnRenderImage is a feature of the built-in render pipeline, not of URP.

[drifting flare]

I have a custom unity shader, and I want to get environmental lighting from the skybox, but am pretty new to shaders. I have done a lot of research and testing already, but haven't gotten it to work. Would anyone here please be able to help?

Built-in render pipeline

[low lichen]

Unity exposes environmental lighting to shaders via spherical harmonics. This gets combined with any baked light probes near the object. To sample it in the built-in render pipeline, you can use the ShadeSH9 function in UnityCG.cginc.

[drifting flare]

I came across ShadeSH9 in my research a lot, but couldn't find documentation for it

[low lichen]

It's mentioned here

[drifting flare]

Cool thank you, I'll work more at it with this and come back if I run into roadblocks

[craggy vine]

Would anyone here be able to provide help? I am currently struggling with trying to create convey's game of life using .Compute shaders and im very close, but for some reason im struggling to comprehend, if the color given to living cells does not have its red maxed out, the simulation breaks and everything is all black.

As a forewarning i do not entirely understand how the current scripts work myself as I am a student and our teacher has been... rather unhelpful.

C# code: https://hatebin.com/qblgiyflqn

Compute shader:

#pragma kernel CSMain
#pragma kernel InitFullTexture

RWTexture2D<float4> OutputTexture;
Texture2D<float> InputTexture;
float4 LivingCellColor;

[numthreads(32, 32, 1)]
void CSMain(uint3 id : SV_DispatchThreadID)
{

    int x = int(id.x);
    int y = int(id.y);

    int count = 0;
    for (int i = -1; i <= 1; i++)
    {
        for (int j = -1; j <= 1; j++)
        {
            if (i == 0 && j == 0) continue;

            count += InputTexture.Load(int3(x + i, y + j, 0));
        }
    }

    bool currentCellState = InputTexture.Load(int3(x, y, 0)) > 0.5;
    bool nextState = false;

    if (currentCellState)
    {
        nextState = count == 2 || count == 3;
    }
    else
    {
        nextState = count == 3;
    }

    // Use LivingCellColor for living cells
    float4 finalColor = nextState ? LivingCellColor : float4(0.0f, 0.0f, 0.0f, 1.0f);

    // Write to the output texture directly using OutputTexture[id.xy]
    OutputTexture[id.xy] = finalColor;
}

[numthreads(8, 8, 1)]
void InitFullTexture(uint3 id : SV_DispatchThreadID)
{
    if (id.x % 7 == 0 || id.y % 3 == 0)
        OutputTexture[id.xy] = LivingCellColor;
    else
        OutputTexture[id.xy] = float4(0.0f, 0.0f, 0.0f, 1.0f);
}```

[compact reef]

Im confused about which one is more performant

1. Unlit/Transparent?
   https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Unlit/Unlit-Alpha.shader

or

2. Mobile/Particle/Alpha-Blended?
   https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Mobile/Mobile-Particle-Alpha.shader

[regal stag]

I'd consider these to be equivalent tbh

[compact reef]

actually the part that confused me was...one of these have just a little script and another one has a long one

if the performance is same...then i'd go for the first one, cz, i dont really know how to add gpu instancing support for the second one...but on the first one i can just add #pragma multi_compile_instancing and get it done

[regal stag]

The mobile one is a type of "fixed function shader" - https://docs.unity3d.com/2019.3/Documentation/Manual/ShaderTut1.html
It's somewhat simpler but doesn't allow for all that much customisation

[compact reef]

i was going to use for several tree billboards

as im working for mobile...will it be any problem if i use the first one instaed of the mobile/particle alpha blended?

[regal stag]

No, either should work

[compact reef]

thanks a lot^ ^

[regal stag]

Behind the scenes that mobile fixed function shader is likely compling into something very close to the other one anyway

[regal stag]

The red values need to be maxed out because the compute shader is loading values from the texture around a given pixel (the double for loop under CSMain), storing in the variable count which is an int type. Any values below 1 will just cast/truncate to 0.
There's also the > 0.5 comparison for currentCellState which expects the InputTexture to have values below and above 0.5 for cell off/on states.

If you are trying to change the colour of all the cells, it would be better to keep the InputTexture and OutputTextures as float, and store values of 0 and 1 only. Instead you can tint the texture later in the vert/frag or surface shader that is used when displaying it - the one used by gameOfLifeMaterial.

[drifting flare]

This is how I'm combining my different sources for the final color, and this is how the final result looks. I'd like to increase shadow contrast while still retaining saturation from the skyColor, how could I do that?

I set diff += 0.1 in order to keep the texture information in the shadow. I get the desired brightness without that, but lose all texture in the shadow

Nvm got it working, I multiplied skyColor by col as well and removed the minimum from diff

[craggy vine]

Cant mess with the actual material shader :[
Only allowed to change the compute shader and c# for the assignment

Would there be a way to hopefully easily just change it so the detection accounts for the colors and only counts those with full black as dead?

sorry im aware the answer is probably obvious but i am not good at this... I just want to pass so i didnt waste all the time for nothing since this class was optional

[drifting flare]

Is bloom possible as a custom shader effect in the built-in render pipeline?

Or at all

[regal stag]

Maybe by using any() function around both InputTexture.Load, and removing the > 0.5 🤷
https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-any
Should probably change the InputTexture declaration to float4 instead of just float as well

[regal stag]

There's a Post Processing package that includes Bloom. Is under the Package Manager window.

[craggy vine]

I will look into those tomorrow when i get on pc, thank you

[compact reef]

is there any significant performance difference between Additive blending and Traditional Alpha Blending?

(in case of particles)

[regal stag]

You could try both and profile. Though it probably varies depending on the gpu. Additive might be slightly cheaper on some, while equivalent on others. I doubt the difference will be that significant though, I'd focus more on stuff like reducing overdraw and batching draw calls.

[compact reef]

i see

[night pilot]

I want to learn about shader graphs and have absolutely no knowledge of this domain
From where can I start or what tutriols can help me
I watch few youtube videos which are bit old

[grand jolt]

I'm currently creating a dissolve shader, but the material shall not always show both sides. Is there anyway to only show the front when not dissolved, but all sides when dissolving or sth similar?

[barren cedar]

I'm currently working on a voxel thingy, but all of the pixels have gradients across them, because different screen pixels on the same voxel pixels will inevitably have different positions, resulting in them getting shaded differently due to slightly different reception of lights/shadows/etc

how can I make a shader that in the lighting calculation - right before it inputs the position into the bit that calculates shadows/lights/reflections/etc - snaps the position to the nearest 1/16th location in object/world space?

[barren cedar]

when you say the front, do you mean all faces with normals that face toward the camera (as opposed to the back faces with normals currently facing away from the camera) or are you referring to a specific face as the 'front'?

[grand jolt]

Hi all

I was trying to make my shadow affect the lower grass tile map

Like the rectangular grass under the garden bed

I toggled the sorting layers

And editted the shape

And changed the intensity

But for some reason this issue occurs when i target sorting layers

I don't want the shadow to cast anywhere else, only from the garden bed to the grass below it

It only works when I toggle the sorting layers to be everything

When I set it to everything it looks like this:

When I set it to garden bed it looks like this:

These are my sorting layers

[grand jolt]

Can anyone please help me? I'm still stuck...

[limpid harness]

How to use and get shaders??

[ebon basin]

You got alpha clipping on so maybe that's part of the problem.

Actually, I'm curious what that does with transparent surface types since I'm usually using that with opaques for the cutout effects.

[chrome minnow]

hello guys, if i need some help in custom rendering feature can i ask it here?

[regal stag]

#archived-urp would fit better

[chrome minnow]

@regal stag actually i am using your Blit Script from your previous site to make a scanner effect

but its not working as expected

it should affect the whole scene but i don't know why its affecting the tab area

[compact reef]

will a fragment shader calculate unused features ?

Recently I have added LOD Crossfade feature on "Mobile/Unlit (Lightmap Support)" Shader which support crossfade transition between LODs

now, If I dont use the crossfade transition feature on LOD Group , will the shader still waste cpu to calculate this?

[regal stag]

Depends how it's written. Usually "optional" features like this are written with shader keywords in mind, and will have lines like #pragma multi_compile _ LOD_FADE_CROSSFADE (and #if LOD_FADE_CROSSFADE surrounding the code the feature uses)
This creates multiple variants of the shader and switches between them based on whether the keyword is enabled (in this case, I imagine LOD_FADE_CROSSFADE is one toggled automatically by Unity)
https://docs.unity3d.com/Manual/shader-variants.html

[regal stag]

The blit script is somewhat outdated, so it's possible it doesn't work as intended in newer versions. If you're using 2022.2+ it may be better to use the Fullscreen Graph and Fullscreen Pass Renderer Feature built into URP now.

[strange frigate]

Hello fellow unity enjoyers! I was always wondering about how you make interior fog-of-war thingy like in classic isometric RPG. Like in Planescape Torment or more recent Pillars of eternity. I know some not so classy ways, but interested in other people's solutions

[chrome minnow]

Can you send me some sources where i can learn how to use them if you have

[compact reef]

then I guess, it creates two variants

1. Unlit (lightmap) when dithercrossfading isnt used
   2.Unlit (Lightmap+Crossfade)
   isnt it?

[regal stag]

Kinda, yes. But would also depend if you have keywords on other multi_compile/shader_feature pragmas too. It creates every possible combination. It can increase build times, and in URP/HDRP prevent srp-batching if objects use different variants so you need to be somewhat careful.

[compact reef]

i was actually using two of these shaders but I thought one that support lod crpssfade , would be enough to cover the need of two , and may benefit in stripping out number of extra shader and save load time

[regal stag]

This might provide an example -
https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@17.0/manual/post-processing/post-processing-custom-effect-low-code.html

[compact reef]

and yeah i have written the code using #pragma multi_compile _ LOD_FADE_CROSSFADE and #ifdef LOD_FADE_CROSSFADE
UnityApplyDitherCrossFade(screenPos);
#endif...

[chrome minnow]

Thank's a lot

[compact reef]

I was just confused if there would be any extra calculation if i use that same shader on non LOD objects

[echo flare]

Is there an easy way to make a tileable uv twirl effect?

[ebon basin]

There's a twirl node I'm pretty sure of

via shader graph

[echo flare]

yep, that's what i'm targeting

Well it works if i replace the uvs with world position which is kinda cool

[smoky widget]

If I had a normal N, how can I make an object aligh the up vector with that normal inside a shader?

[smoky widget]

I need to create a rotation matrix, but im not sure how to do it

[echo flare]

I don't understand, can you give a more high level description of what you're trying to accomplish? Are you trying to rotate a game object based on a sampled normal value?

[smoky widget]

So I have a shader that's rendering a tree. And the tree goes up. I want to align the tree with the ground normal

But there are no gameobjects, I want to do all on the shader

[smoky widget]

answering

[regal stag]

Just an up vector isn't really enough info for a rotation. If you can store or calculate an angle as well, could use something like - https://gist.github.com/keijiro/ee439d5e7388f3aafc5296005c8c3f33

[smoky widget]

why isn't it enough info?

i want to basically do this

Quaternion finalRot = Quaternion.FromToRotation(Vector3.up, newVector);
this.transform.rotation = finalRot;

but in the shader

[regal stag]

The answer here https://gamedev.stackexchange.com/questions/202398/
seems to show the axis & angle represenation of what this is doing. So with those and the gist above it should be able to replicate it.

[smoky widget]

That does the trick

Thanks!

[steel pawn]

Q: for graphics programmers. is it possible to alpha blend sprites together, then alpha clip after the blending without rendering to an off screen buffer?

Specifically I want to create a blob / metaball effect. So blit a bunch of circles with gradient falloff edges, then use alpha clip to create the new curved edge.

[regal stag]

No, you'd need that additional buffer

[nimble dirge]

is there any good pixel art shaders that i can apply on to objects and not the whole camera

[tardy needle]

URP shadergraph question. I got a silly little crosshair I want to position on my screen in a fullscreen shader, but simply adding it as a texture results in said crosshair being stretched out. what's the best way to properly keep it centered at a reasonable scale?

and yes I know there are infinitely simpler ways to create a crosshair, this is just an experiment

[regal stag]

The calculation would be something along these lines -
But yeah, wouldn't actually recommend doing this in a fullscreen pass

[tardy needle]

yeah it's pretty silly, but it was something I was requested to try and do

thanks for the help

[quiet fractal]

How can I aply a shader?

I got a free one from the asset store but idk how to work it

"Simple Toon"

who can I ping to help me 😭

[quiet fractal]

I think it just wont let me apply shaders

[tame topaz]

Nobody is here to be pinged for on demand help.

You don't "apply" shaders, you select the shader you want to use on the material you have.

At the top of a material is a drop down from where you can select all the shaders in your project. It will be in there.

Alternatively, the asset will have example materials you can use and modify. You can select one and see the shader that is selected at the top of the inspector (where you also change the one to use)

[compact reef]

what would be the easy way to convert a surface shader into a fragment shader? is it doable in every kind of shaders? like I have a splatmask shader which draws 4 textures based on the 4 channels of a splatmap texture....How could i convert it into fragment shader...any easy trick?

basically the question is What would be the easiest way to convert surface shaders into fragment shader after clicking on the "show compile" thing?

[prime shale]

there isn't really a simple trick, its quite a process to convert such a thing into a fragment shader

surface shaders are designed so when it comes to alot of the lower level stuff i.e. handling reflections or different lighting setups is alot easier

[compact reef]

still...what would be the traditional way to do that?...

[prime shale]

by hand?

unless if someone else here knows of a way, to my knowledge if you wanted to convert such a thing you'd have to do it manually

[compact reef]

what are these two things used for?

i comment them , and nothing happens on the shader ...is it good to remove them , if they are unused or something?

[compact reef]

what is UNITY_OPAQUE_ALPHA?

[prime shale]

UNITY_SETUP_INSTANCE_ID() calculates and sets the built-in unity_StereoEyeIndex and unity_InstanceID shader variables to the correct values based on which eye the GPU is currently rendering.

UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO tells the GPU which eye in the texture array it should render to, based on the value of unity_StereoEyeIndex. This macro also transfers the value of unity_StereoEyeIndex from the vertex shader
so that it will be accessible in the fragment shader only if UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX is called in the fragment shader frag method.

https://docs.unity3d.com/Manual/SinglePassInstancing.html

[compact reef]

is that for VR or something?

[prime shale]

yes

[compact reef]

so , i dont need that if im building for mobile, isnt it? will any cpu or gpu sweating be saved by removing it?

[prime shale]

even if they had a cost it'd be very minimal

but if you don't need it and have no plans at all for building for VR or such then sure you can remove them

although for UNITY_SETUP_INSTANCE_ID() this is used also for "GPU Instancing"

which you might want to keep

https://docs.unity3d.com/Manual/GPUInstancing.html

[compact reef]

isnt #pragma multi_compile_instancing enough for gpu instancing ?

[prime shale]

https://docs.unity.cn/cn/2022.1/Manual/gpu-instancing-shader.html

[compact reef]

i see

those are also the part of GPU instancing job

could you tell me what it does actually do?

UNITY_OPAQUE_ALPHA

[prime shale]

I'm not familiar with that keyword so I actually have no clue

but most likley that keyword is surface shader specific

looking into the UnityCG.cginc

its defined as

#define UNITY_OPAQUE_ALPHA(outputAlpha) outputAlpha = 1.0

which essentially means that you are taking your texcol, and making the .a channel = to 1

which if you are using alpha, that would effectively make it "opaque"

but if you arent

it won't do anything

if you have an alpha channel also that you are using from the texture sample that you are getting, your pretty much overriding it to the value 1

[compact reef]

i better just disable it

[prime shale]

or get rid of it, if you aren't messing with the alpha channel or using it for anything then there is no reason to have it

[compact reef]

i get my objective done even after i disable it, actually on the alpha channel i define the cubemap reflection

[compact reef]

yeah

thank you , i had another question ....in that shader i have two pass , on the first pass reflection is calculated and the next pass does hold the lightmap feature ...i disabled fog on the second pass and just kept enable on the first , and the fog still works on the gameobject after baking lightmap
is that a good practice to disable fog where is not needed?

[prime shale]

ehh I lean towards yes, but it depends on what you mean by fog

you mean using the unity fog?

i.e. through the keywords that are there by default usually?

i.e. UNITY_TRANSFER_FOG(o) and UNITY_APPLY_FOG()?

[compact reef]

yes unity's default fog

#pragma multi_compile_fog
UNITY_FOG_COORDS(2)
UNITY_TRANSFER_FOG(o,o.pos); these stuffs

[prime shale]

and its not really "disabling fog" its more that your just not adding fog

when your working with fragment shaders things are in a sense more "Barebones"

you don't have alot of things that are just added on that you have to go in and disable

[compact reef]

yes you are specific😅

not using this on two pass , i think it will save some calculation

[prime shale]

I would also caution against using multiple shader passes unless if its required

another shader pass means the object has to be drawn again

[compact reef]

im just afraid as im making things for mobile...that's why im watching out every steps for performance

[compact reef]

the first pass just calculates world reflection into unity_SpecCube0 and writes on the alpha channel of base texture and the second pass just used to make the shader support lightmap

this is the final result

a wet road

[prime shale]

but your using two passes to do that

which yes, depending how you write can work

but you can also do that all in one pass

and it will be better

[compact reef]

should i combine these in one pass?

[prime shale]

yes

[compact reef]

is it doable?

[prime shale]

yes

avoid multiple passes like I mentioned, because it means the object that has the shader on it, has to be drawn again

[compact reef]

idk much about shaders as im a beginner

[compact reef]

i see

[prime shale]

to correct your terminology here, I don't mean to be pedantic here but it helps if your learning

you aren't calculating a reflection INTO unity_SpecCube0. you are getting a cubemap from a unity variable, that being unity_SpecCube0 and using that to calculate a reflection. You are also not writing into the alpha channel of your base texture, but you are using it to control the intensity of your calculated reflection. You are not writing INTO anything in the shader (unless if you are using blitting or blend operations)

As for the second pass I'm not to sure what you mean on how its used to make the shader support lightmaps, I'm geussing you probably just mean that your sampling a lightmap texture and using that as your "lighting"

someone of course can come in and feel free to be even more pedantic and correct me if I'm wrong 😛

[compact reef]

the second pass here is what im using to have lightmap support

https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Reflect-VertexLit.shader

[compact reef]

you are right , i was just trying to express my inner words in my own hlsl 🥲 language (I literally dont know much about shader writing)

[prime shale]

don't sweat it

[prime shale]

yep so I was right, its an additional pass which calculates lighting by using a lightmap, and blends it into the final result

but its another pass, which means the mesh gets drawn again

and you can do that all in one pass

[compact reef]

im just thinking now , how should i just combine them into one pass

[prime shale]

you can send your shader here and I can show you

use https://pastebin.com/

[compact reef]

sure, thank you 🥲

https://pastebin.com/Nu4pazib

[prime shale]

yeah this can be simplified

writing up the new version give me a moment @compact reef

[compact reef]

sure , im thankful)

[prime shale]

couple things to note I'll get into more when I share it but first thing I noticed is that you aren't disabling fog in the second pass like you claim

you are actually still calculating it

you still are using all of the macros and keywords

just because you changed it to where it applies fog to a float4 that is all zeros (basically black)
UNITY_APPLY_FOG_COLOR(i.fogCoord, c, fixed4(0,0,0,0));
doesn't mean your "disabling" fog, you still are technically calculating it, although it's not being added to the final color

[compact reef]

i see...that's why probably the gameobject was still getting affected by fog

[prime shale]

I'll send two versions

one that is mostly correct to match what you wanted to do

and the other is a more correct/optimized version

just so you can kind of see how you would combine "both" passes

[compact reef]

thanks a lot , but would you allow me these suggestions and the shaders modified by you to use in my commercial game project?

[prime shale]

sure your free to use them however you please

[compact reef]

Im so grateful, thank you a lot

[prime shale]

https://pastebin.com/FHiyGsxz

let me know if that behaves/looks how you want

[compact reef]

just some seconds

[prime shale]

if everything is good then I'll go ahead and show you a more simplified/optimized version

[compact reef]

everything works just fine , but I was using Legacy Vertex Lit rendering path and the gameobject was invisible , when i switched the rendering path in Forward, then it appeared and working just fine

should i keep the Lightmode to VertexLM?

[prime shale]

ahh you were in vertex lit rendering not forward

[compact reef]

keeping it , works on legacy vertex lit rendering

[compact reef]

😅 sorry , i should have mentioned it

[prime shale]

its ok, but everything works minus that one quirk?

[compact reef]

yes

everything works just fine

as my scene only used baked lightmap and no realtime light , that's why i choosed just keeping things very simple

[prime shale]

you might need to change the lightmode again but that is a more cleaned up and slightly more optimized version

oh wait a couple of typos

[compact reef]

okay)

[prime shale]

https://pastebin.com/4Kw1Ph76

ok here

damn I missed the lightmode again but oh well

but virtually that shader does what your original does

but only in one pass, and its much more simplified

in there I went a little advanced and compacted both the texture UVs and the lightmap UVs into one variable

since both are defined as float2's, and only need 2 channels to define coordinates so they can fit into a single float4 rather than being 2 seperate float2's

little advanced, but shows you some things you can do in a shader to keep things nice and small

if there are any questions, shoot of course

[compact reef]

it works definitely what it was supposed to and now the code looks so much clean and compacted

[prime shale]

most important of all did it answer your original question on how you could combine both passes?

[compact reef]

i will look through the modifications you have made comparing to the very first one, it will be very useful for me to learn combining all in to a single pass as im using some shaders that uses lightmap , Thanks a lot , Now i've got a perfect tutorial to learn combining the passes into single

[compact reef]

yes ,definitely

I didnt imagine I'll get the shader this much optimized because i didnt really know the consequenses of several pass , thanks a lot again sir🫡

[limpid harness]

How to use shaders

[smoky widget]

That's still generic

[limpid harness]

Lol

[smoky widget]

XD

[limpid harness]

No no bro just tell pls idk

I want to give ultra graphics

[smoky widget]

Ah, if that's so then easy man, it's only two clicks a way. Click on shader and then use

[amber saffron]

In Unity :

• Assign shaders to materials
• Assign textures if needed and tweak parameters
• Assign materials to objects

profit

[limpid harness]

Okay understood it but where to get a good shader

[amber saffron]

https://assetstore.unity.com/

[limpid harness]

Tysm sire

But how to assign shaders to material

🤨

(I'm a nut)

[amber saffron]

At that point, please read the doc : https://docs.unity3d.com/Manual/materials-introduction.html

[kind juniper]

To assign a shader to a material:

Go through the beginner courses of working with unity you lazy ass.
!learn

[echo moat]

:teacher: Unity Learn ↗

Over 750 hours of free live and on-demand learning content for all levels of experience!

[limpid harness]

Btw can anyone tell me what's the difference between high poly and aaa

[kind juniper]

These are not related to shaders.

[limpid harness]

U called me "ass" 😭😭

[kind juniper]

Sorry

[limpid harness]

Yeah but fine

[smoky widget]

You should be able to find answers to these questions quite easily through Google.com

(and probably faster)

[limpid harness]

Okay

[amber saffron]

It it not related in reality. "high poly" is how defined the meshes in the game are, and "aaa" is more the scale of the game production

But like mentioned, looks like most of you questions could be answered by a simple google search, when this channel should be more dedicated to specific shader related questions.

[limpid harness]

Okay sire

[smoky widget]

This might be a super stupid question, but im trying to use this function on a shader

float3x3 AngleAxis3x3(float angle, float3 axis)
{
    float c, s;
    sincos(angle, s, c);

    float t = 1 - c;
    float x = axis.x;
    float y = axis.y;
    float z = axis.z;

    return float3x3(
        t * x * x + c,      t * x * y - s * z,  t * x * z + s * y,
        t * x * y + s * z,  t * y * y + c,      t * y * z - s * x,
        t * x * z - s * y,  t * y * z + s * x,  t * z * z + c
    );
}

And im using it like this

float3 upVector = normalize(PosNor.no); // Change this to your desired up vector
float3 axis = cross(float3(0,1,0), upVector);
float angleRadians = acos(dot(
    float3(0,1,0), 
    upVector
));
localPosition.xyz = mul(AngleAxis3x3(angleRadians, axis), localPosition.xyz);

am I calculating the values right?

I want to apply a Quaternion.FromToRotation "like" method on a shader

[smoky widget]

Im gonna do a small ping to you since I talked about this with you before

[smoky widget]

I dont understand because the math looks right

But the object also gets smaller

[silk sky]

If I want to remove the rim light from an object material, what should I change in the shadergraph?

[burnt sierra]

Hi ahh I am still trying to understand Unity URP and how do I export a glass shader from substance so it work with Unity

[grizzled bolt]

Where's the rim lighting added to it

[grizzled bolt]

Substance should have an export template to make a URP-compatible PBR material

[burnt sierra]

yes for me it works for normal stuff but I have never exported anything for glass

like I can export opacity maps

but how to implement it in unity

[silk sky]

maybe is not proper rim light, im referring to that lighting on the edge of the mesh

[smoky widget]

Found the issue, cross wasnt returning a normalized vector

[smoky widget]

ah no nvm its stil not fixed

[grizzled bolt]

URP does not support PBR standard's transmission variable so to get glass you'd get a glass kind of material by setting the surface type to "transparent" and blending mode to "premultiply"

Beyond that I think the base map and smoothness should work as expected

[grizzled bolt]

Rim lighting is built into the PBR lighting calculations so one does not simply "turn it off"
The rims aren't lighting up out of nowhere, they're glancing reflections from your environment reflections, so from the planet in the background
The real issue seems to be the difference between the sky brightness and the reflected brightness

It looks like you have dark glass in front of the sky, which is not reflected on the metal object

You might solve the problem by simply baking a reflection probe for the interior objects

Or remove the dimming from the window and darken the skybox proportionally instead
If you can have reflection probes it's pretty important to, however
Also prevents the sky from being reflected through the floor

[silk sky]

ok

[celest fiber]

Why is it so hard to find a blur shader? I just want to blur the background while the menu is open. Every shader I find online just doesn't work.

[grizzled bolt]

Blur is a bit of a complicated effect to do in realtime rendering
The most common cause for your experience is likely because scriptable render pipelines are now more common than the built-in render pipeline, which is what most of the blur shaders that you find were made for over the years
It's also uniquely difficult to make similar kind of blurs on the SRPs

[rancid meadow]

can I move an object towards the main camera view shader graph shader?

[prime shale]

@compact reef I prefer if you ask in here rather than in DMs

[compact reef]

actually I dont use terrain in mobile, I just bake it into chunked meshes and use only one material on all of the chunks that writes 4 textures(on R,G,B,A channels) on them based a the exported splatmap of the real terrain, so basically it's just a splatmask shader having 4 slots of textures and one slot of splatmap texture which's required to paint them properly on the terrain mesh, switching from terrain to mesh has drastically boosted performance, it's actually a surface shader, as my scene is completely baked, I decided making that surface shader into a fragment shader which just supports lightmap , for example.... like this one

unity's "mobile/unlit(supports lightmap) " shader https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Mobile/Mobile-Lightmap-Unlit.shader

is it possible to turn that 5 textured shader into a fragment shader?

[compact reef]

im sorry

[compact reef]

I'd just need an example on fragmente shader about blending textures on rgba channels of a splatmap texture

[prime shale]

https://catlikecoding.com/unity/tutorials/rendering/part-3/

this doesn't hav an entire shader but it does have a section on splatmaps

[compact reef]

this is exactly what i was looking for...thanks a lot!!
I will study this thing, but probably i will get stuck on some points like enabling the lightmap support( as there are lots of textures)

[compact reef]

somehow the tiling of the textures isnt working at all, even if I change their values

so here is basically the fragment form of the splatmap shader that uses 4 textures blended by the color channels of a single splatmap texture, but there is a problem , the tilings of the 4 textures do not work except only that splatmap texture

[compact reef]

is there something im missing here?

[prime shale]

yes

notice how mainTex is defined

sampler2D _MainTex;
float4 _MainTex_ST;

the sampler2D being the main texture, but there is also another similarly named variable that has an "_ST" and its a float4

these contain the tiling/offset parameters

so how do you use them?

sampler2D _Texture1;
sampler2D _Texture2;
sampler2D _Texture3;
sampler2D _Texture4;

define them first

sampler2D _Texture1;
float4 _Texture1_ST;
sampler2D _Texture2;
float4 _Texture2_ST;
sampler2D _Texture3;
float4 _Texture3_ST;
sampler2D _Texture4;
float4 _Texture4_ST;

and when you are sampling those textures in the fragment program just add the parameters

tex2D(_Texture1, i.uv)

becomes

tex2D(_Texture1, i.uv * _Texture1_ST.xy + _Texture1_ST.zw)

@compact reef

[compact reef]

on the same float named "splat"?

oh i've got it

Great!!! it now works correctly

the last part is adding lightmap support on it , I will try to follow the way you have shown on the reflective shader, first internee

[tight phoenix]

when doing one of those fake water fill shaders

how do I still do something with the rest of the space?

because its alpha clipped out, the outline look fails
I dont want to also clip the outline, I want to make it look like something is still there

do I just stack more meshes? feels like that it will invite z-fighting

how do I get this, essentially? (photoshopped)

If I dont alpha clip it, you lose the backface that makes the effect even work 🤔

im thinking what I want is just impossible?

got it working 🤔 dunno if you can do it with only one predicate branch though

[compact reef]

a little disturbing you again 😅
if you dont mind , would you implement the lightmap support on the shader
and would there be anymore optimization trick applicable?

https://pastebin.com/adiycVXP

[prime shale]

you cant figure it out?

I showed you how in the update code last night on another shader

[compact reef]

probably there is another texcoord missing on the splatmap one

in the vertex data

i was confused what should i use instead in the vertex to fragment box to mix up the lightmap

here i mean..

[prime shale]

the .zw line is a float 2 that calculates lightmap UVs

texcoord2 is another thing defined

it pulls from the UV1 channel of the model, which often stores lightmap UVs (if generated)

instead of the UV0 channel, which is used for regular texture coordinates

[compact reef]

isnt the splatmap texture already using the uv1?

[prime shale]

nope, this is something that can definetly confuse a begineer but there are 2 structs for a reason

in the original code I provided last night I renamed this to be more clear

[compact reef]

yeah i have noticed

[prime shale]

the top one, which in unity is typically refered to as "appdata" or something of that nature

but what that first struct really is for, is essentially pulling data from the model in a sense

so in the struct you have the vertex position, the normals of the model, the UV0 channel of the model, and UV1 of the model

vertexToFragment are variables that essentially get "exported" to the fragment shader

they get computed in the vertex program, and those values are stored in that struct which gets brought into the fragment shader

this is very common, and is also very useful for alot of things, most noteably is an optimization one where you can compute certain things "per vertex" in the vertex program, rather than in the fragment shader which runs "per pixel"

[compact reef]

how could i define specific one to the fragment shader that im using here the lightmap uv?

[compact reef]

yeah, seems like two birds in one shot

it'd be easier for me, if you'd implement the lightmap and anymore simple optimization trick(if applicable)...thank you again for giving a great explanation on that

[prime shale]

I'll do it just this once, but next time I won't because you have to learn these things

[compact reef]

this will be enough for me

im sorry for my shortcoming

[prime shale]

@compact reef

should be well explained in there

you have that, and the prior shader I sent you last night

should have all of the clues you need

[compact reef]

these will be more than enough + your explanations too

[prime shale]

https://pastebin.com/TXJvExZr

sent again, made one minor typo, curse me

[compact reef]

thank you so much Sir

will it be benefical if I add these too?

i mean the lod and tags

[prime shale]

LOD isn't necessary

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

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

[compact reef]

thanks a lot!

[compact reef]

it looks like the shader talks itself about it's own explanations of the keywords, im so much grateful !! thanks a lot ^ ^

[compact reef]

there is a bit difference between the surface shader and fragment shader of the splat map thing (not the lighting actually ) but i think , it is about the texture sampling

this is the fragment one below

is there any difference on the part where textures are mixed with splatmap?

the dark colors of the textures seems bit off , looks like everything is plain, do i have to make any change if I want to make it look like the surface one?

[prime shale]

in terms of sampling they actually look identical to me, the difference seems to be more in the lighting/shading

[compact reef]

I tried disabling every lighting features(except the "nolightmap") on the surface shader , the difference is still seen both in lightmapped and non lightmapped conditions

[prime shale]

the surface shader is still calculating some extra lighting

while the fragment is just using the lightmap for its lighting, but if there is no lightmap then it will appear flat

[prime shale]

yep makes perfect sense to me

surface shader is still doing extra lighting calculations

[compact reef]

i see

[prime shale]

are you using a realtime directional light by chance?

I'm assuming you are

[compact reef]

then, it's the problem with lighting , no problem , i though there was something with the mixing method

[compact reef]

no , i have disabled all of them

• i have also disabled any kind of lighting in the scene view

[prime shale]

the lighting is probably coming from the skybox then

[prime shale]

that doesn't disable skybox lighting

if you disable it in the scene dropdown

[compact reef]

i think lambert still uses some kind of inside lighting without any light source?

[compact reef]

this time i've removed skybox too

[prime shale]

I can't pin down exactly because I don't know what your doing but I know for certain that there is some extra lighting calculations that the surface shader is doing that the fragment is not, and thats why there is a slight difference

[compact reef]

got a point

as you can see... only the rocky texture is showing a bit difference which is assigned into the 4th terrain texture

the rest of all, zigs and zags on the terrain looks same when swapping between these two materials

probably here is the difference?

or maybe not?

[compact reef]

yes it is
i did this and both looks now the same

it's not actually a problem with lighting , but , though i have figured out the problem , but i want the frag looks like the surface shader was before i just have modified as you can see

i did this change and got the same look as the surface shader had

[compact reef]

do you see any performance killing thing in this change? I was curious if i should use half or fixed instead of float or not as i've seen it's recomended for performance🥲

[prime shale]

do you not have any devices to test with?

[compact reef]

i have one but that may not show difference,, as i was also targetting for old devices😅

[prime shale]

honestly it's better if you focus on getting what you want first, and than focusing on optimization later when things are mostly set in place

[compact reef]

i hope lerp isnt any problem for performance) i just lack the confidence on the modifications of mine even if it be minor

[compact reef]

yeah , you're right

[brisk prism]

Hello, I'd like to ask, is it possible to get the fragment position of a 3d object with compute shader ?

[compact reef]

i think yes, using 4x4 matrix group

[brisk prism]

Wait i mean the screenspace position

[cursive spade]

Hey everyone,
is it possible to incorporate a global array into a shader graph using a custom node?

Ah looks like @hearty obsidian already asked this question

[smoky widget]

Hi! I don't know what your issue is, but I really like how the terrain looks. Have you done anything special to paint it like that, or are you usig any special technique? (like height-blending or something)?

[compact reef]

i was trying to add gpu instancing support on Unity's "Mobile/Unlit(Supports Lightmap)" shader , I added every things that is required out of my knowledge , but still the instancing is not working i.e not a single savings on drawcalls at all...is there something im missing here ??

https://pastebin.com/sk1xnVhw

[compact reef]

first of all, i have painted the terrain as usual , then I baked it into mesh (with 8x8 division , so that mesh chunks are created) by using this asset https://github.com/jinsek/MightyTerrainMesh
later i have just used a splatmap shader which blends 4 terrains textures in the 4 channels of exported splatmap texture , and i get the same terrain but on mesh

there is a limitation though , you can use 4 textures on a single splatmap as there are only 4 channels of a texture

but you can have another splatmap texture for 4 more slots of terrain texture

[smoky widget]

I see, thanks!

[compact reef]

https://github.com/UnityCommunity/UnityLibrary/blob/master/Assets/Shaders/3D/Terrain/Splatmask4Textures.shader here is the splatmap shader if you are looking for it

[smoky widget]

Im doing something similar on my own. I have a texture2dArray on a shader with all the necessry textures and multiple 4channel splat maps, I then sample through each of the splatmaps, get the 4 with the most weight, and sample those textures through a HeightMap Blending. However with that and slopeness and all of this im not getting super smooth transitions or nice blending.

But im doing all of this procedurally, I dont paint anything manually

So that's why I was wondering if similar to heightmap blending, there's anythign similar to get nicer smoothing

This is what I get with height blending

But maybe im using a really strong grass texture

[compact reef]

try decreasing the splatmap resolution

[compact reef]

they seem to blend but sharp

[compact reef]

bump

[smoky widget]

Which resolution are you using?

[compact reef]

as far i guess i was using 1024x1024

[smoky widget]

Mmmm, mine is 255x255

[compact reef]

but it may vary , i suggested to decrease the resolution because , sometimes the splatmap color channels are organized in too much sharp detail

[compact reef]

I have figured out something , when im baking lightmap , gpu instancing doesnt work

[thin crater]

Hi! I'm building an unity shader, I'd like to move the shader from the ShaderGraph/ menu in the shader selection menu, in the material settings. Is it possible to create a new submenu?

Moving it outside from there

[regal stag]

If it's still a graph, inside Shader Graph there is some grey text under the name in the Blackboard window (that'll say Shaders Graphs by default). It doesn't look editable, but is. Using / creates more submenus.
For shader code, it's the name at the top of the shader file.

[thin crater]

Thanks 😄

[compact reef]

I was trying to add GPU instancing support on unity's "Mobile/Unlit(Lightmap)" shader using #pragma multi_compile_instancing , somehow the GPU Instancing Checkbox appears but i took 60 cubemaps lightmapped , and they do not batch with gpu instancing at all....only they get batched when non-lightmapped

no errors and nothing , just the Gpu Instancing batching doesnt seem to work on this simple shader at all

[regal stag]

Lightmapping would require the objects to be marked as static. https://docs.unity3d.com/Manual/StaticObjects.html
Under the static flags, there is Batching Static which combines the meshes to be drawn in a single draw call (per material). At a guess, that could be interfering with the GPU instancing. You can untick that flag specifically though to disable it (dropdown next to the static tickbox)
Not sure which batching method is best, you may want to try both and profile on the target platform.

[compact reef]

yes lightmapping needs to set "contribute GI" to be checked staic , not really it does require the batching static option to be checked

[regal stag]

Not sure what you mean. Afaik GI doesn't rely on static batching

But also of note, with either batching method it won't be able to batch objects if they're on different lightmaps, as the material and textures need to be the same

[compact reef]

yes , i know that

for real quick , can you show GPU Instancing support on this shader im trying?
https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/Mobile/Mobile-Lightmap-Unlit.shader

[regal stag]

There are some docs pages showing how to set it up, https://docs.unity3d.com/Manual/gpu-instancing-shader.html

[compact reef]

i tried following the instructions still couldnt get this working

[compact reef]

can anyone figure out what i have done wrong here , the gpu instancing isnt still working
here is my modification
https://pastebin.com/1y5T8frQ

[wraith path]

hi, i got a toon shader asset and it works perfectly in the editor, though if i build the project the shader is pink

[slow marlin]

I have a shader that I want to manipulate keywords at runtime. In editor the visual effect updates as expected, but in the build however the shader only seems to render when the keyword values match their default state. https://docs.unity3d.com/ScriptReference/Camera.SetReplacementShader.html

curCam.RenderWithShader(Mat.shader, "RenderType");
curCam.enabled = true```
I have also tried instantiating the material with the current keyword settings, but the instantiated version only renders with all keywords enabled. Am I missing something, or should I pivot and have a pre made material for each desired keyword combination

[fair jackal]

is there a way to only have a shader effect the game view and not scene view? I should specify I'm using shadergraph I suppose

[regal stag]

If the keywords are using #pragma shader_feature, there is likely cases where the required shader variants are being stripped from the build. You'd usually use multi_compile for any keywords that should be toggled during runtime.

Or adding the shader to the "Always Included Shaders" (section in the Project Settings -> Graphics), might force them all to compile regardless of which pragma is used

[regal stag]

Can probably use a Boolean Keyword (created in Blackboard), set to Global under Node Settings. Drag it into graph to branch on some effect. Enable it in when entering play mode by using a C# script in scene with Shader.EnableKeyword in Start()
https://docs.unity3d.com/ScriptReference/Shader.EnableKeyword.html
Probably would also want an editor script to strip the editor-only variants as they'd be unused in builds. See https://docs.unity3d.com/ScriptReference/Build.IPreprocessShaders.OnProcessShader.html

[slow marlin]

im using shader graph, I believe that means that the keywords are booleans

[regal stag]

There are Boolean Keywords (different from regular boolean property) and Enum Keywords.
The same thing applies though, see the "Definition" field under the Node Settings while the keyword is selected. That will be Shader Feature or Multi Compile

[fair jackal]

alright thanks I'll take a look!

[compact reef]

this is still grey , I know it's simple for most of you , but an unknown day eater for me even if I tried several times to figure out what's problem really is

[slow marlin]

thanks! setting the keywords to multi compile worked

[tight phoenix]

How do I mask out every other Fraction?

I want fraction instead of sine because fraction gives a strong leading edge

but I cant figure out how to get every other band the way sine has

[cloud flint]

Thank you so much

[tight phoenix]

figured it out

step away from shaders for a month and its like I never did any at all

[compact reef]

someone please help me supporting GPU Instancing on Mobile/Unlit(Lightmap) shader , I read the documentation and tried all possible things for hours , still dont get it worked ,switching to some other shaders , works perfectly fine , but this one is the shader i must need in my project
On the last phase Im just stuck here

[nova needle]

If I have some complicated model which has many parts, and ech of it has a skinned mesh renderer with a material X, and I want to change the material to material Y on all of the parts of the model, is there a simple way to do it?

[tight phoenix]

Im trying to do a Sprite Unlit Shadergraph sprite
for some reason the 'sprite' comes in as a blob with no detail

Something wtf is happening with the alpha, do you know why?

ive tried all kinds of parameters, it works fine when its additive but not when its multiply

I assume im missing something critical in here

even when I connect the alpha is pretty awful

anything wrong in here?

[regal stag]

Is this on a UI component?

[tight phoenix]

its on a Sprite

2D Object > Sprite > Square

its not in the canvas

[regal stag]

Hmm then should just need to connect A output to Alpha

[tight phoenix]

this is what I am expecting to see (except not white)

Anything wrong in here?

[regal stag]

Might be because Color is using 0 alpha?

iirc the Sprite graphs automatically tint using that colour

[tight phoenix]

no difference sadly

the color part is working automatically like you say, just not alpha

https://www.reddit.com/r/Unity2D/comments/ffm3fv/shader_graph_has_weird_alpha_artifacting/

other people having the same problem it seems

hm their weird hack with lerp does nothing on my end

googling seeing people say that shadergraph just sucks and to do it the old fashion sprite way

[regal stag]

I guess if you're using Multiply blend mode the alpha might not be taken into account as iirc that's just SrcColor * DstColor.
You'd probably need to Multiply the RGBA by the A output before connecting to Base Color

Otherwise if you want alpha taken into account use regular Alpha blending