archived-shaders

[barren heron]

okay. yeah makes sense :/ I don't hate the idea of abandoning transparecy

[low lichen]

Is Quest/mobile VR ever going to be a target platform for you?

Alpha cutoff is quite expensive there

But so are big transparent overlapping quads, so...

[barren heron]

very likely not. I am making it for myself because no tool besides Dreams on ps4 fit's what I want to do artistically and then see if it catches on

[low lichen]

If Dreams is the inspiration, this asset might interest you
http://longbunnylabs.com/mudbun/

[barren heron]

Oh interesting thanks. They would probably not like me reselling their tech as a tool though haha xD

[low lichen]

🤷‍♂️ I assume the Asset Store license allows for uses like that

[barren heron]

Haha I guess, but I'm using this as an opportunity to get a portfolio project coming out of my degree too :)

Anyways, thanks this was really helpful! :) You can follow my development here if you want https://www.instagram.com/leonardschoelch/

[spark silo]

how do I apply an IES profile to a light in Unity?

[thick fulcrum]

I'd suggest learning how to UV unwrap objects rather than trying to work around it.
Blender has an auto unwrap which is pretty good at keeping scale etc correct.
However if you spend a little time and learn how to place Edges (I forget the blender terminology) to control where / how UV islands are formed you can get much better results.
There are other tools which do better auto unwrap if you really don't want to learn but the better ones will require you to get out the wallet. 😉

[amber saffron]

Only HDRP has a IES importer.
You can then assign it in the light inspector

[spark silo]

@amber saffron Thanks for the tip! I am in URP!

[amber saffron]

https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@10.0/manual/IES-Importer.html

You could hack it though in URP, the profiles are imported as texture to be used as light cookies.

[spark silo]

ooo ok! I will see if I can get this working, thanks!

[worldly drift]

Anybody knows how to read global shader parameters either in a sub shadergraph or a custom shader node?

[solar sinew]

There's nothing more exciting than seeing this

[regal stag]

While I haven't double checked, accessing a global shader property in a Custom Function can likely be done by either:

• Defining the global shader property in the main graph properties (non-exposed), then use it's reference in the custom function. e.g. Color property with reference _Color. A Custom Function could output a Vector4/float4 with Out = _Color;, or use it in calculations.
• Or, define the global shader property in the custom function too. This would need to be done in the file mode and would look something like :

float4 _Color;
void Example_float(out float4 Out){
   Out = _Color;
}

(I think this might cause problems if you need to access the global shader property in multiple custom functions in separate files though, as the files may be defined in the wrong order. I guess as long as they are all in the same .hlsl file it would be fine though)

• Could also just pass the global shader property from the main graph into the subgraph.

[worldly drift]

the second one looks promising. the idea was basically to wrap some global vars in a node so it is easier to access because otherwise you have to know the exact name of the global var

sadly this does not seem to work

defining a var before the function name results in a syntax error

[regal stag]

It shouldn't do. Are you using the custom function's "File" mode? (not String)

[worldly drift]

Yep that was problem. Thx it works now

would still be great if I could somehow make it a "node" so other devs can create it from the node menu without having to select a text file etc.

[regal stag]

You can set up a sub graph, that just has the Custom Function in and passes it out

[worldly drift]

Yeah I guess thats the way to go although its a bit redundant

[regal stag]

I should also mention the contents of the function file should be inside something like :

#ifndef CUSTOM_DEFINE_EXAMPLE
#define CUSTOM_DEFINE_EXAMPLE
// code here
#endif

To prevent the file being defined multiple times if the graph contains more than one custom function node using it.

[worldly drift]

yeah just found that in the docs

thx for your help 🙂

[onyx heart]

i have a shader, and i decreased it's alpha value, but it doesnt make it more transparent

oh wait i figured it out

[fallow canopy]

how to make shadow shader? i wanted to make fake shadow by rotating and scaling texture and tinting it black/semi-transparent.

i tried this but it doesn't work

idk how to tint texture and then "overlay" it over another one

[fallow canopy]

did it like this

still doesn't work with tilemaps

[teal breach]

Is it still not possible to define a custom shader pass in ShaderGraph shaders?

AFAIK it isn't, so here is a relatively painless workaround you can use:

{
    Properties
    {
    }
    SubShader
    {
        Tags { "RenderType" = "Opaque" "RenderPipeline" = "UniversalPipeline" }
        
        UsePass "ProPixelizer/SRP/Pixelised/UNIVERSAL FORWARD"
        UsePass "ProPixelizer/SRP/Object Outline/OUTLINEPASS"
    }

    FallBack "ProPixelizer/SRP/Pixelised"
}

You can create a new shader that then UsePass from your shadergraph material, and UsePass from your other shader to make a new shader which has the custom pass

not sure if anyone needs to know that but it bothered me for ages 😄

(the 'pixelised' shader is a shader graph, and this adds the outline pass to it)

[regal stag]

You'd probably want to make sure it uses the other shader graph passes like shadowcaster / depthonly too

[teal breach]

(obviously you still have to the property block, cant win em all)

yup!

there's a list here: https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@10.2/manual/urp-shaders/urp-shaderlab-pass-tags.html

(although weirdly it seems to still get a shadowcaster pass even without it - I assume from the FallBack?)

this middle one here:

still shadowing the one below it

[regal stag]

Ah yeah possibly.

[teal breach]

but strangely I have to explicitly add the UNIVERSAL FORWARD, even with the fall back

so.. 🤷‍♂️ , I'll keep looking

[regal stag]

Also, you need to be careful as I think UsePass can break the SRP batcher if all passes aren't using the same Per-Material CBuffer. (Of course if you're using material property blocks it's already broken though)

[teal breach]

Hopefully it's just a stop gap for now and Unity will eventually make SG flexible enough for custom passes 😬

even just UsePass equivalency would be fine by me 🙂

[oak yacht]

Is 7/8ms for a compute shader to complete normal on a decent PC with GX 1060 graphics card?

I created an empty compute shader and run it and then wait for it to complete, and it takes 8ms (using StopWatch to track time).

I'd have thought considering there are many fragment shaders and vertex shaders running in parallel at 1700FPS on a blank scene, the time to run an empty compute shader should be significantly less?

interesting if I do build and run for windows, it goes up more to 30ms.

Turning off V-sync let me raise the frame rate and now runs at 5ms so I'm happier, still thought a compute shader that does nothing would be faster than this though.

happy now, got it down to 1ms even after re-adding all my code and buffers to the shader.

I think the stopwatch wasn't accurate enough was part of the issue.

Should have just used Time.time to start with, stupid.

[rustic thistle]

Hey guys does anyone can tell me what is happening there? I'm using shadergraph for interactive gras, image is following. It works almost well, but in some positions AND angles, they (vertices 😄 ) simply denying to work as intended.

I'm using a custom node because I needed a vector array.

[rustic thistle]

Is it a distance thing? In sceneview I see similar behaviour but mostly only in a far distance?
I'm confused 😄

[noble bobcat]

hey, so i made a basic tile based texture and i wanted to apply it to multiple models. The texture is simple, just a square with white and black squares and some details but the main texture only has 4x4 squares.

Is there a way to add automatic tiling to the material? Let's say i want to make a square that is 12x12 and i want each square to occupy 1 meter (or unit) in game so i'd have to do 3x3 tiling, however if i wanted to do another square with 12x8 i'd have to have a different tiling for this one where it would have 3x2. Is there a way to make it automatic?

I tried using shader graph and create a shader that is kind of working but even though the surface seems to work fine, whenever i increase the tiling the sides of the cube get the tiling with them even though i haven't really increased the height, and even if i were to increase the width in the sides it increases the ammount of tiles on the height e.e If anyone knows any solution or something that might help me plz @me

[warped vigil]

hey, mega-noob here.
im trying to edit the colors on screen with some if(col.g > [something]) col = (.34, .85, 92, .5); but it *always outputs grey
seems like the only thing that actually makes a difference is the 4th value, only making the color of the pixel black or white
and every shade of grey inbetween
why is it doing this? shouldnt the 4th value control alpha?

maybe my entire setup is wrong....

im just trying to have my shader look at any colored pixel and crank that sucker to a bright version of said color without needing to individually set colors

[gritty rapids]

https://cyangamedev.wordpress.com/2020/01/28/worldspace-uvs-triplanar-mapping/
This

[noble bobcat]

@gritty rapids thanks, i'm looking into it and into some other tutorial i found as i looked into worldspace uv's

[gritty rapids]

The only downward is if you have moving objects, the texture will stay in place.
I've seen some solutions to this tho..

[rustic thistle]

He could add Object pos ontop maybe?

I mean subtract 😄

[gritty rapids]

Surely idk

I'm making a water shader, the part where water is not deep is called Shallow right ?

thanks

[rustic thistle]

u welcome

[rustic thistle]

Ok, I found out, that it is a material Instance thing...

[noble bobcat]

hmm, i'm not seeing a imediate situation where that could happen but could you share what your solution would be? Might come to the realization later that it might be useful

[gritty rapids]

Oh it's @rustic thistle who gave a hint, I personnaly have no idea ^^

[noble bobcat]

hmm, imma try to look into both of that then ^^

[rustic thistle]

Yeah, try out this "https://cyangamedev.wordpress.com/2020/01/28/worldspace-uvs-triplanar-mapping/" and for the moving part, just subtract the objects world pos 🙂

[noble bobcat]

welp i tried it and even tho i managed to go the point where the tiles increase depending on the size of the object i'm not able to move or rotate the object without the tiles screwing themselves up 😦

but i kind found a better solution, that even though it isnt 100% perfect and i'm still looking on how i can make this work

[twin rose]

Question, if I have an expensive operation that can execute per vertex or per fragment (in a VR environment), and I have many vertices.

The per vertex one doesn't look as nice as the fragment one.

The vertex operation is a linear combination of 8 numbers, while the fragment operation is a linear combination of 8 inverse-square calculations.

Should I just go with the fragment one, because it would only be calculated on the fragments being viewed?

[noble bobcat]

hmm, i'm having a issue with it. I decided to use the object scale to directly change the value on the tiling mixed with a triplanar tutorial i saw but now i have a question. Whenever i try to increase the size the top, front, bottom and back faces seem to increase in a direction however whenever i try to do the same with the left and right side, if i try to raise the height it doesnt match the same direction in which the front and back do... not sure if i make myself clear but yhea...

[grand jolt]

i believe that may be the way the tri-planar works, not entirely sure how to solve that though

[solar sinew]

I think that has to be a consequence of where the UV map's seams are/how it is unwrapping right?

[errant drum]

hey, trying to make sprite based water ripple effect work in unity universal rp, but can't get the effect visible in game view even though i can see it in the scene view

ripple effect in the game view is always static

i'm using the default camera setting and unity 2019.4

that ripple effect is being done by modifying the vertex position field in the sprite unlit master node of shader graph

[errant drum]

oddly enough the ripple effect works in perspective projection but not in orthographic

[lusty badger]

Hi, I'm working on a compute shader and I'm passing a list of elements through compute buffer but sometimes the list can be empty. How to prevent zero length compute buffer when trying to empty out the buffer?

[lusty badger]

After some experimentation found a pretty easy solution. I passed the compute shader a new empty buffer with count 1 and stride 4 without setting the data.

[grand jolt]

anyone knows why shader resets its values in editor?

its supper annoying

like shader works, i minimize editor, then bring it back, shadow doesnt work anymore
then i have to do

.SetVector("heightMinMax", body.heightMinMax)
.SetFloat("oceanLevel", body.shading.oceanLevel);
.SetFloat("bodyScale", BodyScale);

on material, to bring it back

i assume these values are erased in editor

eg on minimizing/maximizing

well i located which variable it is, its body.heightMinMax

it gets reseted inside shader

similar problem here https://forum.unity.com/threads/unity-resets-all-my-shader-properties-specifically-my-arrays.428318/

he also has this problem on minimizing/maximizing unity editor

[hot nacelle]

hey, what's the equivalent of blender's emission shading in unity ? i got a material that i don't want it to interact with lights, I just want to see his colors without any shadows

[limber fossil]

I made a dissolve shader-pbr- with graph editor. but when I apply it to a small objects, dissolve is not working (I have float variable to manipulate appear) but on a bigger objects it works.

do you have any idea where am I missing

[lusty badger]

Unlit

[lusty badger]

Maybe it works but scale of the noise (or dissolve texture) you are using is too big?

[limber fossil]

Ill check it thanks

[polar ruin]

What is a easy and very fast way to create many Mask maps for the HDRP lit shader?

I have a bunch of Roughness/Metalness/AO textures I created In Blender and need them to be used in Unity ..

[wraith dune]

I want texture just in up ,What should I do?(i use shader forge)

[amber saffron]

Something like that ? https://assetstore.unity.com/packages/tools/utilities/texture-combiner-111334

Or https://gist.github.com/jean-moreno/724c5d04d619c55f0bcda433b053df5d

Or even : https://github.com/alelievr/Mixture

[amber saffron]

Filter by normal vector value.

[polar ruin]

Thanks for the suggestions @amber saffron, it really helped!

[wraith dune]

I want texture just in up ,What should I do?(i use shader forge)
?

[ashen elm]

Does anyone know a good tutorial for starting out with shaders?

[simple violet]

So I have this effect of the floor tiles that's acheived by using multible game objects with sprite renderers with lit shaders, and it's really expensive.
I'm wondering if this effect would be achieve done with one object using a shader

or would this fall into meshes?

[thick fulcrum]

the level exploding into view?

[simple violet]

floor tiles

they all spin

[thick fulcrum]

you can do those sort of effects in a shader, even mesh displacement but not sure you would have the same level of control (visual feedback when editing). if it's a very exact repetitive motion, perhaps it's worth a shot

but lit shaders are going to be expensive on mobile (assuming that is target)
lights of any kind are costly (not so much on high end devices)
so you may want to look at faking that aspect

[simple violet]

damn

[rustic thistle]

Hey Guys, Still me having wired behaviour on my gras shader made in shader graph with a custom node. Does anyone know why the instantiated material on the first platform is overwriten by the second one? 😢 Surely can provide more informations and/or the shader.

[worldly drift]

@rustic thistle how did you instantiate the second material? are you sure it is a different instance?

[simple pagoda]

This seems reasonable.

[rustic thistle]

@worldly drift I have a script on each platform, which is setting a billboard angle on each, so it seams to be instantiated because the values are not the same, is that wrong?

[simple pagoda]

Help me...

[worldly drift]

if the billboard angle is a material property and is different for each object then it should be 2 different instances yes

[rustic thistle]

Ok, than I can surely say it is 😄

[worldly drift]

well then it has be be sth in your shader that is reused across materials

dont know exactly how you do the grass deformation. I guess you are using the depth texture somehow?

[rustic thistle]

In fact I am using a custom node with some points, wait a sek pic incoming 🙂

this is the graph

and that is what is inside the custom node

[worldly drift]

how is the points array being filled?

[rustic thistle]

from a script on the gras, which is getting collision objects

[worldly drift]

using which method?

[worldly drift]

mhh I see. was thinking it might have been set globally

but it is set per material

[rustic thistle]

yeah, sadly it is

any ideas?

[worldly drift]

I would first simplify the shader and reduce it to basically just the custom function

to see if the point array is the cause

and then try to simplify the c# code so that some fixed coordinates are written into each material

maybe it is even the c# script somehow receiving both collision events (could be caused by the collider hierarchy)

thats just a wild guess but I cannot see anything obviously wrong at first glance

[rustic thistle]

the script is working fine, I looked up for the collision points in the inspector. But yeah, I guess I'll give it a shot, thank you.

After making this out of the shader, same effect. It has to be in some sort the custom node. Is it, that hlsl is marking the float array in line 1 as "global" automaticly?

now I am pretty sure it is a global array, but how to set it to local now?

[untold shoal]

hey, is there a way to create a terrain shader in shadergraph using the URP in 2020.2.1f1 ?

[wicked niche]

Hi

I've tried to set up URP from scratch where I didn't have URP, and now I've created this material there

and in another project where URP also created there

[quaint bridge]

https://gph.is/g/EGnKzzJ in this video I compare Toony Colors Pro 2, Flat Kit, Minimalist, Stylizer, and the free Roystan toon shader https://youtu.be/g9Oprm5RV7Y

[twin rose]

Do mesh renderers have built-in frustrum culling of sorts? I have a bamboo forest, and I can put it all on one mesh renderer so it does it at once, or I can just have a bunch of individual bamboo groups, or a combination. All static

@quaint bridge have you taken a look at UnityToonChan? They have a standard and URP version, and they both work great, but I’d like to see it in comparison with the paid ones.

[grand jolt]

frustrum culling is performed by the camera automatically

if a mesh renderer is outside the frustrum, it doesnt render

so, off the top of my head, if it's all one renderer chances are itll only un-render when theres no bamboo at all on screen

[quaint bridge]

Thanks @twin rose I have seen it and would love to try. Maybe in the future I'll make a new URP video where I can include it. 🙂

[grand jolt]

I would personally do individual bamboo renderers that way it happens per-bamboo. I would couple it with Occlusion Culling (set them to Ocludee static)

@twin rose

assuming you have stuff that can occlude them at all that is.

[blazing pumice]

How do I get fonts?? whenever i download them I cant put them in? does .zip not work?

[wheat quail]

Getting this warning: Reduced additional punctual light shadows resolution by 4 to make 6 shadow maps fit in the 512x512 shadow atlas. To avoid this, increase shadow atlas size, decrease big shadow resolutions, or reduce the number of shadow maps active in the same frame
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

where do I decrease 'big shadow resolutions'? why am I getting this error?

[twin rose]

@grand jolt thanks for the input. Maybe I’ll bake groups of bamboo to get a sweetspot, I’m worried about all the gameObjects I’ll end up with

[grand jolt]

@wheat quail go into your pipeline settings then try increasing the atlas size to 1024

[digital gust]

Anyone got an idea on how to face like a plane in front of another plane, only render face or back but still letting the planes "mask" out the other planes behind?

[twin rose]

Also does anyone know if there is a maximum number of opaque and transparent objects per scene? It seems like if I turn on my lush grass I hit that limit and rendering lag causes the fps to drop dramatically

[digital gust]

Do you have any count to rely on?

[wheat quail]

@grand jolt thank you. additional light shadowmap resolution set to 20124 solved it

[grand jolt]

thats a VERY high resolution, may be better doing more maps at lower res but yeah, glad you sorted it

[wheat quail]

so i updated unity to 2021.1 to get my point lights to cast realtime shadows. now i need to get the light to travel further

at 'night' my only light is a campfire so it produces a lot of shadows. sorry i meant 1024

[solar sinew]

oooo they added realtime point lights?

finally

[digital gust]

Ill try to ask simpler, is there a shader that only renders backfaces/frontfaces but still "masks" the mesh in a right way?

[simple pagoda]

How do you make a list inside a compute shader?

[shadow locust]

lists are called vectors in shader code usually

[simple pagoda]

so

what would I write that as?

vector int numbers;
?

then how would I get something from it

numbers[index]?

Then how would I set it?

barsShader.SetInts("numbers", numbers);?

plz halp me

I litteraly am making the worlds simplest compute shader

But I also have the worlds simplest understanding of compute shaders

#pragma kernel CSMain

// Create a RenderTexture with enableRandomWrite flag and set it
// with cs.SetTexture
RWTexture2D<float4> Result;

vector int numbers;

[numthreads(8, 8, 1)]
void CSMain (uint3 id : SV_DispatchThreadID)
{
    if(numbers[id.x] > id.y)
    {
        Result[id.xy] = float4(1, 1, 1, 1);
    }
    else
    {
        Result[id.xy] = float4(0, 0, 0, 0);
    }
}```
This is my entire code

(that does not work)

I am trying to make a sorting algorythm visualizer

So I am using a compute shader to take the numbers, and create bars, because after 512 * 512 my cpu gets sad

hmmm

I now have ```// Each #kernel tells which function to compile; you can have many kernels
#pragma kernel CSMain

// Create a RenderTexture with enableRandomWrite flag and set it
// with cs.SetTexture
RWTexture2D<float4> Result;

float1 numbers;

[numthreads(8, 8, 1)]
void CSMain (uint3 id : SV_DispatchThreadID)
{
// TODO: insert actual code here!
if(numbers[id.x] > id.y)
{
Result[id.xy] = float4(1, 1, 1, 1);
}
else
{
Result[id.xy] = float4(0, 0, 0, 0);
}
}```

but how do I set it?

barsShader.SetFloats("numbers", numbers); does not work 😦

😦

I litteraly just need to make a set of integers.
Set a list of integers.
And access a list of integers.

[shadow locust]

Sorry the fact that lists are vectors is pretty much approaching the limit of my personal shader knowledge haha

hopefully comeone else can chime in

[oak yacht]

I'd use a Buffer for an array of integers if that's what you're passing in

new ComputeBuffer(numOfElements, sizeof(int), Default)

[simple pagoda]

I DON'T KNOW HOW MANY ELEMENTS ARE GOING TO BE IN IT

[oak yacht]

there isn't an open ended data type for shaders

you have to specify an upper bound

[simple pagoda]

can i make it 9999?

[oak yacht]

4096 is max

[simple pagoda]

ok

[oak yacht]

There are other structures which more store more

I've not tried using them in Unity though

Create the buffer once, and re-use it in every dispatch

don't try creating it every time otherwise GPU will allocate memory every time and be slow.

[simple pagoda]

What else do I put in it

[oak yacht]

need to release the buffer when your app shutdowns or when you're done with the shaders.

[simple pagoda]

and why is new yelling at me

ok

[oak yacht]

new ComputeBuffer(4096, sizeof(int), ComputeBufferType.Structured))

[simple pagoda]

hm

I have a list of ints

And I wan't to make bars from them

in a texture2d

a sorting algorythm visualizer

how would you suggest I do that?

I need to speed it up

so that is why I am using compute shaders

I just need to either return white or black

depending on if the value in that collums in high enough

Like this

[oak yacht]

not thought how to sort in parallel before, so not sure

[simple pagoda]

i need to get numbers

nono

not sorting

just visualizing it

that is the pard in the shader

the algorythms are crazy fast

[oak yacht]

so your input is a bunch of unordered numbers, and for each number you want a texture row with a bar going across?

[simple pagoda]

can run thousands in like <0.2 seconds

Like that

the bars represent the value

[shadow locust]

Oh you want to visualize sorting algorithms

[simple pagoda]

YES

oh you are a different person

[shadow locust]

with a shader? 😮

[simple pagoda]

yes

its too slow

to loop with the cpu

after 600ish values it gives up

somewhere inbetween 512 and 1024

[shadow locust]

sorting 600 values on CPU should be no sweat

[oak yacht]

Something like,

int number = numbers[id.x];
for (int y = 0; y < MAX_Y; y++) {
Result[id.x, id.y] = vector3(1.0, 1.0, 1.0);
} else {
Result[id.x, id.y] = vector3(0.0, 0.0, 0.0);
}

[simple pagoda]

no

not sorting!!!!!!!

NOT SORTING

[shadow locust]

lol

ok sorry

[simple pagoda]

VISUALIZING

CREATING THE TEXTURE2D

[oak yacht]

not sure about the texture assignment, not played with textures much in ComputeShader yet

[simple pagoda]

Something like this

    {
        Result[id.xy] = float4(1, 1, 1, 1);
    }
    else
    {
        Result[id.xy] = float4(0, 0, 0, 0);
    }```

I just need to GIVE IT THE NUMBERS

[oak yacht]

for threadnum I'd use (1024, 1, 1) personally

[simple pagoda]

i am using 8x8

its fine

well

it should be fine

IF I GET IT TO WORK

[oak yacht]

what I gave above, pseudo-wise should do what you want

not got time now to throw it in a shader and check

sleep time for me 🙂

ni

[simple pagoda]

wait

where did you paste it

and I also need to set it from the c# script

[oak yacht]

int number = numbers[id.x];
for (int y = 0; y < MAX_Y; y++) {
     Result[id.x, id.y] = vector3(1.0, 1.0, 1.0);
} else {
     Result[id.x, id.y] = vector3(0.0, 0.0, 0.0);
}

[simple pagoda]

how would I set it from the compute shader?

[oak yacht]

something like that in the shader will do what you want

[simple pagoda]

where does numbers come from?

How do I make and set numbers

THAT IS WHAT I NEED

[oak yacht]

CreateBuffer()
buffer.SetData()
shader.SetBuffer
shader.Dispatch
buffer.GetData

[simple pagoda]

{
    Result[id.xy] = float4(1, 1, 1, 1);
}
else
{
    Result[id.xy] = float4(0, 0, 0, 0);
}```

is what I have

How do i use the create buffer

[oak yacht]

RWStructuredBuffer<int> numbers;

use this declartion

[simple pagoda]

I feel like I am giving the number 20 to you and I am getting 17 27 24 19 21 LOL

yay

that didnt give me red

now how do i set it from the c# script?

[oak yacht]

if you're only reading, might get better performance with,

StructuredBuffer<int> numbers;

but I don't think it'll matter for this shader

[simple pagoda]

kk

how do i set it from c#

i have to leave in like 5 mins

or less

[oak yacht]

in C#,

Create the buffer using Shader.CreateBuffer
Set the data using buffer.SetData()
assign buffer to the shader call using shader.SetBuffer
dispatch the shader using shader.Dispatch
invoke the shader / get data using buffer.GetData or for faster async, use UnityEngine.Rendering.AsyncGPUReadback.Request

set buffer requires kernel ID

[simple pagoda]

cant find any create buffer

[oak yacht]

assuming you only have one kernel, use

SetBuffer(0, "numbers", numbers);

[oak yacht]

use kernelHandle since you have it

[simple pagoda]

?

[oak yacht]

SetBuffer(kernelHandle, "numbers", numbers);

[oak yacht]

is numbers a buffer?

[simple pagoda]

no

numbers is a array of ints

[oak yacht]

you need to create the buffer first,

var myBuffer = new ComputeBuffer(4096, sizeof(int), ComputeBufferType.Structured)
myBuffer.SetData(numbers);

[simple pagoda]

kk

[oak yacht]

GPU can't see your array because it's in main memory, you have to send it to the GPU using the SetData

[simple pagoda]

kk

now?

[oak yacht]

then SetBuffer(kernelHandle, "numbers", myBuffer);

[simple pagoda]

mhm

last: How do i get back the value the GPU makes i forgot

[oak yacht]

yes, now you call myBuffer.GetData() to get the data back from the GPU

[simple pagoda]

preparing thank you spam

[oak yacht]

GetData also actually starts the shader

Dispatch just adds the job to a queue, it won't do anytihng until you call GL.Flush() or GetData

or the frame is started by Unity later

[simple pagoda]

What goes in GetData();

[oak yacht]

void GetData(Array data);

so something like,

ah sorry

it's not the numbers you want is it, it's the texture

so something like,

[simple pagoda]

?

yeah

the texture

how do i get it

something like...?

[oak yacht]

hmm not done textures before, but I think RenderTexture is for fragment shaders?

try Texture2D instead

?

this has GetPixelData

[simple pagoda]

I need result I think

[oak yacht]

In your code, change RenderTexture to Texture2D

[simple pagoda]

what?

Where is RenderTexture

[oak yacht]

about 4 lines up from your new ComputeBuffer

[simple pagoda]

Nope

[oak yacht]

What's the erorr?

[simple pagoda]

cannot resolve symbol

[oak yacht]

you need to change both to Texture2D

not just one

[simple pagoda]

I really have to go

same error

[oak yacht]

should be different error

[simple pagoda]

Ping me with you final asnwer

I really have to go

[oak yacht]

I'm going as well

night

[fast oar]

Hey, does anyone know the difference between Vertex normal and Tangent space normal in the pbr shader graph master node ?

[low lichen]

@fast oar Tangent Space Normal used to just be called Normal. It's where you would plug-in your normal map. The vertex normal is the object space normal direction for each vertex. That's where the normal starts. Tangent space is relative to that normal direction, so you can think of a tangent space normal map as adding/offsetting the vertex normal.

[fast oar]

Thanks !

[fast oar]

does anyone know if there is a way to force the shader graph to run a calculation in the vertex step ?

[low lichen]

Anything that ultimately connects to one of the ports in the vertex stage will become part of the vertex shader

It's a lot more clear now with the vertex and fragment stages separated

[fast oar]

Good thank you !

[toxic fable]

I'd like to ask a question about Shader Graph shaders and optimization. I've been trying to create a simple unlit multiply-blended shader that slightly blinks/pulses for in-game highlights. Even though the effect worked, I had this weird visual glitch that is kind of hard to describe (with 2021.1.0b3, the issue is gone though). Anyway, while I was swapping between my custom-written unlit shader (the same effect minut the blinking) and shader graph one to test what caused the problem, I browsed the shader graph generated code and I was stunned by how huge it is even when creating a basic unlit graph with no effects at all, compared to equivalent shader written manually.

Hence, I was wondering if someone could explain to me how is this optimized - is everything from the generated code compiled? Is everything calculated in runtime?

[low lichen]

@toxic fable The shader compiler is very smart about removing unnecessary things and optimizing the things it keeps. That's why generated shader code is often very verbose, even including code that ultimately never gets used, because you can trust the compiler will remove it and save yourself that work.

[toxic fable]

That's great to hear, thank you for answering that for me.

[fast oar]

@low lichen Do you happen to know if there is a way to get the position of the other 2 vertices in the triangle in a shader graph ?

[low lichen]

That's not possible in shaders. You have to remember that multiple triangles can share the same vertex.

It's not always going to be just two other vertices.

You can also just as easily have vertices that don't have any triangles referencing them

[fast oar]

ahhh ok that makes sense, thank you !

[low lichen]

You could encode the positions of neighboring vertices in each vertex, for example into two of the 4 available UV channels.

But that would lead to a lot of duplicate data

You could also have a separate array containing all the vertex positions and then in each vertex have 3 integer indices pointing into that array.

[fast oar]

I think i found a way to solve my problem : I am trying to get the new normal for a plane that I am deforming in the shader, I can see some already made Normal nodes but i dont know if any of them does what I want : calculate the new normal using a noise function (y value) as input

well I am stupid one of them is named normal from height...

[digital gust]

Anyone knows a URP Depth mask Shader here? I am just used to shader graph but not how to access like Zwrite and stuff in it.

[viral prairie]

I want to make a game which player can freely mix and match a lot of cloth. The problem is, if the shirt and the pants do not match, it sticks out like this.

I've tried Ztest and Zwrite, but when I added Ztest to the shirt, it became liek this

does anyone have any solution to this problem? thank you!

[teal breach]

If you want to do it that way, I think you need to change the render queue order of the meshes to make sure the shirt is drawn before the body

(and by the look of it, after the trousers)

but then you'll see the shirt through the trousers/skirt if you look from below

[digital gust]

I guess the right way would be to find vertices that are close to each other and then put the shirt vertices above the trousers

[teal breach]

you could do that in the vertex shader for the jacket/shirt, and just move them along the normals by an amount that you set (probably weighted by their y position, so that it affects the bottom of the jacket more than the top) - but clothes are really hard for exactly these reasons

[teal breach]

I don't think you can specify a custom depth value in shadergraph

[digital gust]

Yep, you are right, I just used the default depth mask simple shader laying around all over the web, still works with URP 🙂

[teal breach]

General question - it seems discord is getting more popular than the forums for support and questions (probably because the feedback is instant and you can discuss) - does anyone else worry about how searchable/archivable the info on discord is? Personally I find it not so good for finding old content. For instance, there used to be a question relating to sorting/depth for transparent materials almost twice a day

[digital gust]

I totally agree, its super complicated to get back to any discussion or solution here. I mean, its just smaller things that pop up here usually, and the more complex they get, they still pull over to forums, because noone can answer a complex thing like this cloth topic up there with a few lines here.

[placid hearth]

Guys, how can i create anime cel shading in unity?

[teal breach]

There's a good recent unity blog post on that, one sec

https://blogs.unity3d.com/2019/07/31/custom-lighting-in-shader-graph-expanding-your-graphs-in-2019/

[placid hearth]

thanks

[wraith dune]

I want texture just in up ,What should I do?

[brittle shard]

hi there.
Looking for any shader graph tutorial for unity 2020.x
I do not have any experience with that and all tutorials use nodes there are not exist any more.

[viral prairie]

thanks a lot! I will try that. Hope it will ưởk

[worldly drift]

Is it possible to output the final (screen space) vertex position to the master node somehow? I am trying to manipulate the projection matrix but the output needs to be in object space

[devout quarry]

@brittle shard what nodes don't exist anymore?

[brittle shard]

like PBR Master, its harder to learn when you do not have first steps and i was wonder if somebody do not have tutorial link newer unity graph version.

[unkempt pendant]

is this C#?

[pallid hamlet]

Brackeys tutorial is up to date i did his hologram a couple weeks ago

[devout quarry]

@brittle shard PBR is still there, just renamed to 'lit', you need to do 'create blank graph' and then you can set it to lit in the graph window

all other nodes should be there as well, things are sometimes just renamed/reorganized, once you get the hang of those you'll be fine

I think it would be better to just get familiar with the new names instead of having to wait for new tutorials, all old tutorials will still be of great use!

[amber saffron]

You can manipulate the viewspace position, an before connecting to the position input of the master node, convert with a transform position node, view -> object

[simple pagoda]

How can I use a gpu to make a Texture2D?

I was doing that in the cpu

and now i am using the gpu to make a rendertexture

but the cpu still has to convert it

so that might be why it is still slow

unless creating and setting sprites is the problem

but texture2D's don't have a enableRandomReadAndWrite

[low lichen]

A Texture2D is a texture that exists in system memory and can also have a copy in video memory. A render texture is a texture that only exists in video memory.

You can't have the GPU write directly to a Texture2D because the GPU has no access to the system memory, only video memory

It could modify its copy, but the original still exists in system memory.

[simple pagoda]

i see

so

how do I make setting the sprite more efficent?

[zenith stag]

Looking for good books / learning materials / tutorials / videos on HLSL and mastering all of this Shader Graph nonsense. Any ideas?

[simple pagoda]

so it doesn't laaaaaaaa --- a ei g a

uhhhh

tbh there arent many good sources i can find

[zenith stag]

^^ that’s been my discovery as well

Aside from the odd minute long clip from random hour+ long presentations

There doesn’t seem to be much in the way of decent shader teaching that isn’t the bare bones basics

[regal stag]

I've got a bunch of tutorials focusing creating shader effects in Shader Graph, mostly creating specific things. A little HLSL/Shader code too. https://www.cyanilux.com/contents/

Written posts, not videos that is

[zenith stag]

Sweet

[regal stag]

I know https://danielilett.com/ also has some Shadergraph/URP stuff, and https://minionsart.github.io/tutorials/ does too

[zenith stag]

Thanks man. I’ll check these out

[low lichen]

Does anyone know if it's supposed to be possible to use Graphics.CopyTexture on textures with different MSAA settings? I'm suddenly getting an error about that in 2020.2 when it was working fine in previous versions.

CopyTexture called with mismatching sample count per pixel (src 2 dst 1)

[lean grove]

hello

I'm having a problem where my assets are grey unless I'm really close to them

in the editor and game mode

any idea how to debug this?

[toxic fable]

Can you post a screenshot? I suspect fog is causing it

[lean grove]

this is the sample URP scene

[toxic fable]

Yep, that's fog. Go to Window->Rendering->Lighting, switch to Environment tab, and under Other settings section, you can either adjust the fog or disable it completely

[dreamy kernel]

Why not "paint" weights on these vertices, and then scale them outwards and inwards using a shader uniform or something? This way you could procedurally shrink/expand clothing, so it all aligns.

[jolly sorrel]

Does anyone know how to fix the tearing issue?

[cerulean mountain]

I need help with a shader. Does anyone know how I can turn this Diffuse shader into a Cutout shader? I've tried fideling with alpha and keywords but I don't understand shaders well enought to know what I'm doing. It should still be able to let objects create a shadow.

[low lichen]

@cerulean mountain An alpha cutoff shader is just an opaque shader where some pixels are discard;(ed)

Instead of setting Alpha to 0 on pixels below the cutoff threshold, you discard them

[low lichen]

Are you doing vertex displacement on that?

[cerulean mountain]

but doing that, breaks shadows behind things

[low lichen]

@cerulean mountain Make sure it's set to Geometry as the Queue

[cerulean mountain]

it is, same result

[low lichen]

I'm guessing that's happening because the shadow caster pass doesn't also discard

I don't remember if surface shaders have some keyword or something that causes it to add that

[cerulean mountain]

no clue

been trying arround with alpha:blend and things for about 3 hours now

[low lichen]

@cerulean mountain addshadow seems to make it use your surf function in the shadow pass, which means it would discard.

That would go in the #pragma surface line.

[cerulean mountain]

yes it does, great!

but for some reason the alpha cutoff slider doesnt seem to do anything

except when hitting 1, the whole thing becomes invisible

[low lichen]

What does the alpha cutoff part look like now? The same as before but with o.Alpha = 0; replaced with discard;?

[low lichen]

Well that's just because that's how your texture is

The alpha in your texture isn't a smooth gradient that reaches far into the texture. It's probably a very short gradient, and so the cutoff will only have an effect on that part

Until it's high enough to reach the fully opaque pixels in the middle

[cerulean mountain]

in another version where hidden faces would render throught, the alpha looked fine

it didnt have these wird brown edges

and moving the slider would add or remove stuff just fine

so the texture is fine

[low lichen]

Which parts are you expecting to be removed?

Is the purple more transparent than the black or something?

[cerulean mountain]

eeeh, somehow it works now

thanks for the help, guys!

[quaint bridge]

Some snow tricks with visual scripting, DoTween, and Toony Colors Pro ☃️ https://gph.is/g/E3LLpeL

[jolly sorrel]

@low lichen sorry for the late reply but yes I am using vertex displement

[simple pagoda]

What is the compute shader version of rounding?

I think I have an idea to speed up a visualization I am trying to make

[simple pagoda]

ok

apparently there is litteraly something called round

Does this work?

for (float1 a = 0; a < 100; a += 1)
{

}

ok i think that works

buuut

#pragma kernel cs main not found

  no variants for this platform (no compute support, or no kernels)```

Ok

So my for loop has broken it

how do I fix this loop?

    float1 b = 0;
    for (float1 a = round(id.x * targetWidth / width); a < round((id.x + 1) * targetWidth / width); a++)
    {
        b++;
        if(numbers[a] >= id.y)
        {
            value++;
        }
    }```

I am creating a sorting visualizer

but it can't create sprites very fast

so 1: I let the gpu make the pixels

2: I downscale it by forcing it to be a maximum size

which is what I am trying to do

aaand

It magicly works now

by setting float1

to uint

[last robin]

btw you can save a character and just use float which is a the same as float1

[simple pagoda]

oh

kk

I think it doesn't really matters

because when it is exported the code is compressed down into kindof a raw format

[last robin]

it doesn't i just thought i'd let you know lol

could also go with vector<float, 1>

😂

[simple pagoda]

yes

amazing

can't figure out why this is creating blocky bars``` float value = 0;

uint pixelSizeX = dotSize * targetWidth;

uint pixelSizeY = dotSize * targetHeight;

for (uint x = round((id.x - pixelSizeX) * targetWidth / width); x < round((id.x + pixelSizeX) * targetWidth / width); x++)
{
    for (uint y = round((id.y - pixelSizeY) * targetHeight / height); y < round((id.y + pixelSizeY * height) * targetHeight / height); y++)
    {
        if (numbers[x] == y)
            value = 1;
    }
}

Result[id.xy] = float4(value, value, value, 1);```

What it should do: Create a scaled down texture2D with blocks around the numbers for the y position

wait

hmm

ahHA

nevermind

Hmmm

How do I make a vector2?

And set it to a value from the c# script?

NEW RECORD!!!

In the past 30 seconds I:

-Crashed Unity

-Crashed Discord

-Crashed Windows

Special 3 for 1 deal!

[cosmic prairie]

float2 is vector2

https://docs.unity3d.com/ScriptReference/Material.SetVector.html

[simple pagoda]

Weeelcome back to another episode of

FIND THAT UNSPECIFIED ERROR

Sorry, wrong show, Weeelcome back to another episode of FIND THAT VAGUE ERROR'S SORCE

[last robin]

Result[id.xy] != float4(1,1,1,1) is component wise so it's equivalent to bool4(Result[id.xy].x != 1, Result[id.xy].y != 1, Result[id.xy].z != 1, Result[id.xy].w != 1) which isn't a single bool. So you need to use something like any(bool4) or all(bool4) to get it down to a single bool.

You want !all(Result[id.xy] == float4(1,1,1,1)) probably

[buoyant minnow]

Does anyone have experience with shaders in regards to tilemaps? I'm trying to apply a shader to the entire tilemap, but my result is rendering on each individual tile separately.

[oak yacht]

Is there a way I can determine if an SDF function is negative or 0 at any point inside a bounding square/cube ?

or do I have to march it?

[sleek zealot]

If i have an object, and use a build mode (so the player can build his own house or what ever) an make one block or one other object in more then one color do i need one object per color or any extra attachmants ?

[deft scroll]

if i make something using blender's shader editor can i export it to unity somehow??

[sleek zealot]

yea export the object as .FBX it include all data of the object

[deft scroll]

it didnt work

i used the shader nodes or whatever u call - the shader editor

[oak yacht]

Anyone know how to debug issues in shaders in shadertoy?

https://www.shadertoy.com/view/ttyyR3

commenting out one line stops it crashing, but it doesn't do much that line.

ah sussed it

[willow pike]

This isn't a shader question per se but does anyone know if it's possible to change a mesh object's vertex colors in editor without changing it's material/model? I'm trying to use a large number of identical meshes to compose scenes in my game but with varied colors while maintaining batching.

When I change the vertex colors of a model with either ProBuilder or PolyBrush it creates a new instance of the model instead of its original model and drops my "save by batching" count significantly. Even once I've changed it's color and duplicate the object, each new object with that color starts to reference a new model from the last in ProBuilder/PolyBrush.

I'm trying to avoid creating a ton of identical model files in my project that only differ in their vertex colors

[copper ore]

@willow pike From my experience assigning different vertex colors creates a new draw call even if the mesh is identical.

[willow pike]

That makes sense @copper ore. But let's say I wanted to change the vertex colors of 50 objects in a group of 100 otherwise identical objects. So now I have 50 objects that are red and 50 objects that are green. (I'm coloring these objects before entering play mode, not at runtime btw.) Shouldn't that still only create 2 batches? 1 batch of the red meshes and 1 batch of green meshes?

The way it's working now, I'm starting with 100 red meshes and overriding the vertex colors on 50 of them to make them green but then each green object is creating it's own model reference in ProBuilder or PolyBrush (depending on which I use to paint the vertices). So what I would expect would be 2 perfectly clean batches of 50 objects each, 1 batch for red and 1 batch for green is becoming 51 batches - 1 batch for the original set of 50 red meshes but then 50 additional batches for EACH green mesh.

Really hard to explain what is happening. I guess my question boils down to: is there a way to change vertex colors in Unity without creating unique models? ProBuilder and PolyBrush seem to be the most common way to manipulate vertex colors but both create unique models for each game object they are attached to.

[copper ore]

My guess is (but i would have to verify it with a test). If you internally create a new mesh object and assign new vertex colors (even if they are the same values) it cant be batched. The way that would work (in theory) is: Create a new mesh, assign vertex colors and re-use this exact mesh for the similar objects.

[willow pike]

Right that's what I'm thinking too. So the result would be a new mesh stored in my project for each differently colored object.

Kind of a pain but not the end of the world I guess. The annoying bit is that I'm using tileable 3D assets without textures at all, just colors derived from the vertex colors. So like for my floor pieces I'm using the exact same model for tileable cave floors as my outdoor grass floors, the only difference being the color (dirt brown for the caves, and bright green for the outdoor grass).

So what I would have hoped could have been one model for both actually requires two and they are identical in their shape just different in their vertex color data.

[copper ore]

If you dont need to change the position of the tiles at runtime you could consider to combine them to larger objects. Like tile patches of 50x50 tiles or whatever.

[willow pike]

Right that is an option we've discussed too. We definitely want the tiles to be editable for our level designs as long as possible but we also want to be able to test in a somewhat performative way. Tricky balance to strike.

Thanks for your help @copper ore

[copper ore]

No problem. You could keep them seperate in editor and only combine the tiles with a script when you start the game.

[willow pike]

That's a good option

[simple pagoda]

if statement conditional expression must evaluate to a scalar at CSMain

siiiiigh

I am trying to make a visualizer for sorting algorythms

It should create large dots around where the number is

so i check at each position if numbers[x pos] == y pos. If so, color the suroundings white

Otherwise, If it has not already been set white, it gets set black

just realized

this probobly will cause flickering anyway

hmm

this

is odd

[simple pagoda]

ok

it looks like

it does not like comparing float4s

[sleek zealot]

íf you just want to export the shader self idk how i use an external shader editor

but if you export as Fbx . that schould include all material data and LODs if you have

[twin rose]

Kind of asked this question before but am still wondering for a definitive answer: For dense static vegetation, one large mesh in a single mesh renderer, or many small mesh renderers?

I know that batching just draws it in one call, which is the same as one large mesh. But with single mesh renderers, they might have culling on a per renderer basis?

[deft scroll]

apaprently it doesnt include the shader node stuff in blender

i guess ill jsut remake the shader in unity thanks!

[polar coral]

why does this happen?

i have this sprite

but when i put in shadergraph

i get this

[hollow compass]

Hey real quick sorry to interject; are there any good syntax plugins for writing shaders in unity? I'm losing my mind trying to find out where this syntax error is because the error message doesn't really say where it is

[regal stag]

@polar coral The previews in shader graph doesn't show alpha / transparency, (and I think some programs won't save colour in areas with 0 alpha causing it to stretch out like that). Usually that doesn't matter as you'd output the alpha in the master node and it wouldn't show when blended anyway.

If you want to obtain the red output with just the part shown on the sprite, multiply the R and A outputs together.

[polar coral]

aight thx mate

does shadergraph have a switch feature so its like branch but with more input options instead of just true of false?

using an int

[timid timber]

Hi guys, my profiler shows that I have 2.5GB in my RAM used by ShaderLab. Can someone explain to me what this is and how can I lower it?
RAM usage used to way lower before I updated Unity. I would like to get back to where it was

The RAM usage by ShaderLab is in every scene, at all times. If that matters

[untold shoal]

generally you want to avoid those things in a shader, what are you trying to do ?

[polar coral]

i have a sprite with a shader that makes an overlay an you can put color and alpha etc for hit effect etc...

now im splitting it in parts using the RGB template above

for character selection so i cant do my pulse effect i created for the overlay on different parts instead of just full shape

im trying to do it with custom function now

[twin rose]

How performant is unity's perlin noise implementation in hlsl? Should I avoid using it?

[polar coral]

when i change default it does what it should do

but when i change it in 2.

it doesnt do anything

is it something with the custom function ?

i tried with branch also didnt work

doesnt change at runtime

nvm fixed it

[surreal trench]

Anyone had any example making custom nodes?
I can't seem to get past this error.. the code is float4 sampleA = SAMPLE_TEXTURE2D_GRAD(tex, ss, randomA, dx, dy);
tex is Texture2d
ss is SamplerState
randomA, dx and dy are float2s

[tight forge]

New to shader graph in HDRP, does anyone know why this simple dissolve shader looks correct in the inspector preview window but NOT in the scene view?

apologies if it's something newbie and obvious.

[exotic arch]

I’m getting a shader error saying that an Unsupported LegacyShader/Diffuse is in the world, though I can’t find any objects that have that shader.

[regal stag]

If you're using the emission output, HDRP uses more realistic lighting values so it needs to be multiplied with a much larger number to have the colour appear. Or I think there's an Emission node you can put it through to convert the units

[tight forge]

Thank you for your super awesome help as ever! emission node works a charm

[sleek zealot]

how can i change FXAA to TAA in the URP ???

[regal stag]

I don't think URP supports TAA yet. (and doesn't have the motion vectors / velocity buffer involved in that, but that's planned on the roadmap at least).
(Could try this out : https://github.com/sienaiwun/TAA_Unity_URP)

[low lichen]

Who would want to use TAA when you can use MSAA?

[winter hamlet]

Hi! Does anyone know why my shadergraph output is always purple?

Nevermind, it just didnt want to work with universal rp for some reason

Isn't universal render pipeline supposed to support shadergraph as well?

[sand rivet]

can someone tell me why my shader is doing this

please dm me if you know how to fix this

[sleek zealot]

as far i know is there some post processing issues

[sleek zealot]

do i need everytime attach an shader file if i have the same object but in another textur or another color ?

also do i ever need to create a new shader file for eatch object or can i use the Cel shading for the Whole game in one file

[solar sinew]

what you are describing is a material

in both your questions

https://docs.unity3d.com/Manual/materials-introduction.html

or are you asking whether you can apply your shader as a screenspace effect rather than per object?

[sleek zealot]

what i want is the objects have own material but the light shading are ever the same so everything has own textur but same shader style

[solar sinew]

Every material has a reference to a shader.

A shader is set of instructions for the GPU for how to render each pixel on your screen.

In the unity inspector you can set the shader for any material. What you are describing is the base functionality of using more than one material.

Here’s one of many small explainers/introductions to materials:

https://youtu.be/V72pMtqMgFk

[sleek zealot]

thx ^^

[wheat quail]

is there a node that creates a slider in the inspector so I can adjust per material?

what do I need to attach stuff to these nodes here?

[solar sinew]

under Vector 1 you can change Default to Slider

alternatively you can just create a slider node (same thing)

[solar sinew]

if you leave these unassigned they will use the default inputs for each (you can see those are listed as object space)

[wintry valley]

Anyone online to help me with a shader graph? I'm trying to make a monochrome shader that fades from one direction to the other to remove the color from the image. I have a gradient which will act as the progress bar, so to speak, and a smooth step from that to the saturation node. Is there any way for me to easily stop the process somewhat of the way through, then pick up from another point? So for example, if I start removing the color from the bottom left, can I stop, go to the top right, and start taking color out of there? I'm sure there is but I can't wrap my brain around it. Been trying to do this for a few hours now.

I initially thought just to make another of the same exact shader graph, but that only would include two angles. I was wondering about a system that allows for any angle which I can insert into the rotation node by code, but that still wouldn't work for all degrees, as it would only be one line.

[grand jolt]

How do you ztest always without messing up a models textures?

[royal field]

I have a bit of a unique question here, and I'm not certain as to whether or not this can be solved.

A custom shader has been created for my project which utilizes specific parts of mesh terrain's vertex alphas to create a 'blending' effect between two materials. Basically, the material that will blend with another is placed atop the 'main' terrain. Unfortunately, this renders said parts transparent, and as such comes with problems such as not being affected by post processing, or casted shadows as seen here.

Is there any way to fix this, or does Unity not support transparent shadow-casted/post processing?

Without the blending shader, you get an ugly blob of random bits of areas that are meant to be the blending pieces, like seen here.

This is running on 2019.1.2f1 BTW - only reason I'm not using a newer LTS release is because too much would break because of the amount of work that's already been put in.

[digital gust]

I am just getting lost in shadergraph right now 😄 Does anyone know a way to like mask an object from left to right based on its size? So I could throw any object on it and a UI slider would just mask the object with its value? I got a shader but somehow, I am not getting the positioning right. The slider goes from -1 to 1, so in world axis at 0, I thought that made sense, but seems like I am combining the nodes in a wrong way.

[grand jolt]

instead of doing a outline with ztest always i want to make the entire model appear, but everytime the shader just messes up the model textures im not sure why

[digital gust]

So you want to render the model upfront the walls but in normal textures? @grand jolt

[crisp jackal]

please anyone know how to do a pentagon shader like this?

[grand jolt]

yes can i send you my shader?

i dont know what i need to plug in to get this effect properly

[digital gust]

I am not sure you need a shader for that. You could try out a 2nd camera and just flip the render layer to the depth higher camera for that object

[grand jolt]

the model goes into a unity based game, not my own so i would have to achieve this affect with a shader for my game map

[digital gust]

Just post an image of your shader then here

[grand jolt]

Is there a way to get ztest always to not mess up the textures on a model?

[digital gust]

I guess this is not really possible as of how zdepth works. The shader uses or does not use z depth, but if its not using it, it can't tell, where what texture is on the mesh and tehrefore mix it up on one z depth I guess

[grand jolt]

@digital gust is there something outside of the shader that can help me fix the zdepth issue so the texture do properly go on a face mesh?

[low lichen]

@grand jolt I assume you mean ZTest Always is causing the mesh to render ontop of itself in some cases?

[grand jolt]

yes

[low lichen]

One way to fix that would be to cut out a hole in the depth buffer that's in the shape of the model, before drawing the model normally

[grand jolt]

heres an example of the issue

[low lichen]

That's a character with ZTest Always?

[grand jolt]

yes but i only put the ztest shader on half the face

[low lichen]

Why is your model's face split in half in the first place?

[grand jolt]

i can fix that but im trying to figure out this

it looks normal with non ztest shader

[low lichen]

It's a pretty low res screenshot, but it looks like the eye is on top of the face. Is that what you mean?

[grand jolt]

yeah haha

is this a issue that can be solved with shaders alone

[low lichen]

Not with just changes to the existing shader

This gets more complicated when you have a model with mixed opaque and transparent materials

Which character models usually do

@grand jolt Are you using URP or HDRP or just the standard render pipeline?

If you're using the standard render pipeline, you can add a second pass into your character shader which is a depth only pass with ZTest Always.

If you place that pass above the normal pass, then Unity will draw the model with that pass first, meaning it will cut out a hole in the depth buffer before it draws the model with the normal pass.

URP doesn't handle multi pass shaders the same way though. It will just draw the first valid pass it finds, instead of drawing all the passes it finds like the standard render pipeline.

[digital gust]

Anyone got an idea about this?

[low lichen]

Here's an example of that I made with Unity Chan. This is taken from RenderDoc, which lets you analyze each draw call. The image on the left is the color output which ends up on screen, the image on the right is the depth buffer.

The first few draw calls don't draw anything on the color image, because it's only cutting out a hole in the depth buffer to be filled in later with color.

[low lichen]

No, there's no way to make a shader that can do that with any mesh without any additional data given to the shader.

Because the shader doesn't get data about what the min and max values are, the bounds of the mesh.

[digital gust]

I can work with that and put values in it, I just dont get the offset when just using world 0 and trying to put the texture on -1 or 1.

[low lichen]

I'm not sure I understand what you want.

[digital gust]

on the right side, you see that I want like an cut through xray view of an object @low lichen But as you can see, right now its just on world 0, the slider is feeding the offset value. If I slide it, it just seems like offsetting and makes no sense for me. I was trying to use position and add offset, multiply, use world position, object position, it just does not seem to fit. So I am looking for any suggestion

[low lichen]

The Rectangle node seems weird there

[digital gust]

It is just for the split texture to not have to use an actual texture

[low lichen]

What I would be trying to do is extract some value from the current fragment between 0 and 1 that says how "right" it is, 0 being all the way to the left, 1 being all the way to the right

Then if that value is less than the current _offset value, clip the fragment

That's also assuming _offset is 0 to 1, which I would do

[digital gust]

Lets say I have 0 1 and want to use this with a world pos + the offset, how would I go about that. So lets say, the object is at vector3(0,0,5) and I want to add offset as x-value. so it would be betweein vector3(0,0,5) and Vector3(1,0,5). what would be the best approach? Slider is value 0-1

[low lichen]

You pass that information to the shader, what the min and max X values are. Then you do an inverse lerp, where A is the min value, B is the max value, and T is the X position.

What you get out is a value between 0 and 1 (or possibly outside that range if any pixels are outside the range)

[digital gust]

Would you mind showing me some simple graph? I am fiddeling around with it, but cant get the position to work undependend from the worlds position

[digital gust]

Okay I think my problem is, that I am not using one single mesh renderer but an array of it. If I am using object, it obviously is using all objects individual origins and orientations...

[meager pelican]

@royal field Why are you using transparency at all? In the original shader base-pass can't you "just" net out the two textures, blend them opaque and calc the resulting color? The terrain system does something similar to this with many textures....it nets it all out into a resulting color.

[royal field]

Mesh was designed in this specific way, for a 2005 game. Reworking it to do that means reworking the entire map which could take months

Heavy modifications to the actual terrain mesh for that too, I'd think which would take a long time

[meager pelican]

What I said doesn't need to change the mesh....it needs to change the shader that uses the mesh....

But I don't know your situation, so grain of salt.

Shadows and transparency can be/is problematic.

[low lichen]

It looks like the problem there is that the transparent shader isn't receiving shadows, which shouldn't be problematic

It's the casting that's more problematic

[meager pelican]

He/they mentioned post-processing too!?!?! (although if it's post, it should be after transparent pass), so IDK, I was just getting them to make one net color in one pass, most efficient. And it should work with post too. You don't want to be drawing your mesh-terrain twice if you don't have to, total waste of processing. :2cents:

[digital gust]

Is it possible to have all sub meshes have act as if they were one shaderwise? Same as like Position World but independent of the world position.

[low lichen]

@digital gust I don't see how multiple objects is an issue if you're using world position

[digital gust]

because the world position is at a fixed one. So I don't want a absolute world relation but an object relation like of the parent object.

[low lichen]

Why is it fixed? You don't want the world position of the object. You want the world position of the fragment.

[digital gust]

If I am using object position, the rotation axis are all messed up depending on the object.

[low lichen]

Don't use object position. Use the Position node in world space. That will give you the world position of the current fragment

Then compare that with a min and max world position range

[digital gust]

But how would I compare it including a rotation?

[low lichen]

Include how?

[digital gust]

I want the mask to follow along the X-axis of the object, lets say vector.right, no the world x axis

[low lichen]

Do you want the clipped pixels to follow the object as it rotates, so it's always the same part of the object that is clipped regardless of rotation?

[digital gust]

But not like the object where the mesh itself is on but more like the parent group holder of the meshrenderers

[digital gust]

Exactly

[low lichen]

You need to pass in that information about the parent to the shader

You can't infer what that is from the world position or object position.

You want to use the local X position relative to the parent transform

[digital gust]

I am passing the position, just dont know where to go from there 😄

[low lichen]

Position isn't enough. You need the whole transform matrix.

Position, rotation and scale

Pass in the parent.transform.worldToLocalMatrix as a matrix property. Then use the Multiply node to multiply that matrix with the world position of the fragment

What you get back is the local position relative to the parent transform.

[digital gust]

Is that a node I can use or do I have to like pass in them as separate values?

[low lichen]

No information about the parent is given to the shader

Because it's not necessary

So you need to pass that information to the shader yourself

[digital gust]

So using a matrix 4x4?

[low lichen]

Yes. transform.worldToLocalMatrix is a Matrix4x4

[digital gust]

Damn, learning a lot today, thank you very much for your help. I am missing so much shader knowledge

[tall river]

Hello. So i have an object that is semi transparent. on this image i have an example of what its supposed to look like https://gyazo.com/30bf645f4dd26e32c101fff7fc52c1dc, however in unity its not the same https://gyazo.com/168ad9fefed82abf2d099ec59322986d. i have 3 maps (base collor, alpha map of the transparency/opacity, and emission) In the material i do not see an option to insert my opacity map and the emission part isnt glowing like how its supposed to in the example image.

[low lichen]

@tall river Unity shaders usually don't use a separate opacity map. They just expect the Albedo texture to be transparent

Which yours isn't

[tall river]

@low lichen well thats a shame

[low lichen]

@tall river There's an option in Unity to generate an alpha map from greyscale

So that black color becomes transparent

[wintry valley]

I'm still having this issue, is anyone online who can help me through this?

[low lichen]

@wintry valley You could use a custom grayscale mask texture that describes when each pixel should transition. Black/0 could mean right at the start of the transition and white/1 could mean right at the end

[wintry valley]

I'm still new to shaders sorry, how do I add a custom grayscale mask?

[low lichen]

I just mean a texture that you read in the shader

This video goes into that concept, though not with Shader Graph
https://www.youtube.com/watch?v=LnAoD7hgDxw

Just imagine instead of it going black, it's black and white in those sections. Same thing.

[digital gust]

@low lichen thanks a lot for pointing me at that matrix, works like a charm now!

[wintry valley]

@low lichen I watched that video, and I'm unsure how I would implement that with the functionality I need. Depending on which direction the player is would need a new gradient from whatever angle. That's why I had just a red to black gradient and a rotation node to that, but then I added a multiply node to combine any gradients.

[midnight stratus]

I have dumb question, is there a way to have two materials that reference the same shader graph have different values? feel like I'm missing something

I guess I could make a subgraph, and make 2 different shaders so its not duplicating code

[regal stag]

You can create Properties in the Blackboard, which can be changed per-material in the inspector

[midnight stratus]

when I change it for one, it changes it for the other

[regal stag]

The objects must be using the same material then. Make sure they use different materials

[midnight stratus]

ah your right

is there way to easily save the changes when you are in play mode?

I keep doing copy component and then paste values but sometimes I forget I did stuff

[regal stag]

I think changes to materials won't revert when exiting play mode, unless it's a material instance created through C# that is.

[midnight stratus]

it was another issue, I had to duplicate a prefab

well I changed it in play mode and it reverted

[regal stag]

I don't think there's a built-in way to save changes during play mode but there might be some tools for it

[full mirage]

Am using this asset for that and it fulfills its job: https://assetstore.unity.com/packages/tools/utilities/play-mode-saver-104836

Oh and there's a free one as well apparently: https://assetstore.unity.com/packages/tools/utilities/play-mode-save-177452

[midnight stratus]

I thought there was something added to 2020.something but I forget, thanks for the packages 👍

[full mirage]

They added a feature to show\run a prefab in a special in-game mode without actually being in playmode, if I remember correctly.

[wheat quail]

why doesnt my custom function have the gear icon?

ok in unity 2021 thats done through the graph inspector.

[slow bear]

Unity UI and MeshRenderers: is there a way to make meshrenderers in a UI hierachy be affected by a Canvas Group alpha value?

I know that CanvasGroup and UI materials use the vertex alpha to make the fading work, but I want that same fading mechanism to work also on a mesh renderer placed in a UI Canvas

[solar sinew]

Shader graph version 10.0 and up. New in Unity 2020.2

[wheat quail]

do you know what this error means?

just following tutorials trying to get a grasp of shader graph, hard to debug things that go wrong when you dont know how they work to begin with

[regal stag]

@wheat quail Your custom function is expecting a function name of "GetLight_float", but you named in "GetLightingInformation_float" in the file.

[wheat quail]

ah ok... i had to rename it along the way... ok that puts me on the path

[wide delta]

What does the id represent in a compute shader kernel? And what is the difference between the threads defined at the top of the kernel and the threads passed into the Dispatch call?

[last robin]

perhaps this helps

but also i think it's easier to explain like this
if you dispatch (1,1,1) and the kernel has numthreads(8,8,1) you will get id.xy in the range [0, 7] and id.z will always be 1.

so for example if you want to fill in every pixel in a 10x10 image and you've chosen numthread(8,8,1) you want to dispatch (2,2,1) to fill the entire 10x10.
Some of id.xy will be out of bounds in that situation so if you're just writing to a texture you can let it go out of bounds and nothing will happen (out of bounds texture writes do nothing), or you can check if it's out of bounds and return early

if you want to make sure you always fire off enough groups dispatched I use this extension method

public static void DispatchCompute(this CommandBuffer command, ComputeShader shader, int kernelId, int3 numthreads, int3 dataSize)
{
    int3 groups = (dataSize + numthreads - 1) / numthreads;
    command.DispatchCompute(shader, kernelId, groups.x, groups.y, groups.z);
}

just be careful that if you have for example a 10x10 texture dataSize is (10,10,1) not (10,10,0). Maybe there's a better way to do that 🤷‍♂️ but it works for me

so in other words id will be from 0 to dispatchThreadGroups * numthreads on each axis

[wide delta]

Ahhh ok perfect
Thanks!

[sleek zealot]

how can i use the Mainlight shader to setup the material style for the whole game ?

[arctic vortex]

Someone here who can help me with - or explain about - custom passes?
I'm trying to render a specific layer always on top of another layer, but keep all other depth rendering order

[thick fulcrum]

this is a limitation of standard decals, they project in one direction so what your getting is correct.
To minimize the problem is to align the cube to the underlying objects surface direction. Where you have a corner of a cube this will be impossible to be correct without distortions.
There are ways clip by angle to avoid seeing the distorted area's but it does not remove the problem as such, just hides it.

The obvious solution here would be triplanar mapping, but that's going to have extra cost performance wise and I've no idea how / if it's easy to do as a decal projector

[junior widget]

I see! Thank you very very very very much! Couldn't find the answer online. Your quick reply saved me hours. Thanks

[junior widget]

May I also ask how should I enable the effect through script? Toggling activeState?

[thick fulcrum]

yea just simply enable / disable the game object, although there are many ways I like to keep it simple myself 😉

[arctic vortex]

@thick fulcrum do you possibly also know how to achieve the effect I'm describing in my question? (I'm trying to render a specific layer always on top of another layer, but keep all other depth rendering order)

(in the HDRP pipeline)

I did the same thing earlier with just rendering 3 cameras on top of each other

but in HDRP i think i need to use custom passes but can't grasp how those work

[thick fulcrum]

I'm not familiar with HDRP afraid, but I would probably be looking at camera stacking as the simpler route. however you are probably correct that it requires custom passes in that pipeline.
If you were not trying to keep all other depth order it might be easier in a custom shader, I'm at a loss tbh without using a custom pass
but I've still got training wheels on so perhaps one of the more knowledgeable people will provide a better insight 😉

[arctic vortex]

Thanks for the reply anywayz 🙂 I'll wait a bit more :p

[wooden spruce]

Hey guys, did anyone have an issue where custom shader stopped working when moving scene to addressable? All the other shaders from Universal Render Pipeline, and the ones we wrote in Shader Graph are working when loading the scene as addressable, but the one we wrote from code doesn't, even though we used a template script for URP? It was tested on Android.

[scenic musk]

It seems like in URP, when making the depth texture unity has all the MSAA data and then explicitly throws it all away: https://github.com/Unity-Technologies/Graphics/blob/master/com.unity.render-pipelines.universal/Runtime/ForwardRenderer.cs#L750

Am I reading that right or is there a way to get the MSAA data from the depth texture?

[viral coral]

I was writing some code just to play with a few things (not really production code), and one of the things it was doing was swapping UVs between a few different sets. My main question is whether having extra UVs that aren't used by the shader actually slows anything down. I could store them somewhere else, but the uvs are a handy place to stash them that doesn't require me to create another script, etc. So does it have any performance hit, other than just the (non-GPU) ram it'd take for the extra data?

[low lichen]

Are you referring to the fact that bindMS can only be enabled for XR and therefore if you're not using XR, bindMS is false and the texture will always get resolved?

[honest hatch]

so the UI is supposedly in front of the capsule but the capsule somehow is overlapping it

the capsule is transparent and I've noticed that if I put it opaque it works fine

I'd like to know if there's any way of making it work with transparency

oh, and the blue glass is transparent and is also overlapping the UI which should also be in front of it

[wheat quail]

can anyone help me with this error?

[regal stag]

Need to use #ifdef SHADERGRAPH_PREVIEW in v10+

rather than #if

[wheat quail]

ok thank u

that works awesome

[wintry valley]

Is there an easy way to turn an rgb(3) to an rgba(4) after a saturation node? When connect the saturation node to the color(4) it gives some alpha issues.

[regal stag]

You can use a combination of a Split node then a Combine or Vector4 nodes

[wintry valley]

Bless you! that worked! amazing!

For some reason the entire image is always grayscale, despite the saturation node that is only the lower 1/3. The multiply node comes from a lot of nodes that just multiply together to get that gradient.

Tree without the shader

Tree with the shader

[wild vapor]

Anyone here have an invisible shadow catcher material that works in deferred rendering, Unity 2019+. Light map bake-able a plus.

I have looked on the forums and came across some older ones (like Unity 5.x), but unfortunately never had any luck using them with my project's version of Unity.

If you don't mind, please @ me in case this gets lost in the channel

EDIT: Built in renderer

^ think of an invisible plane that can receive shadows from other geometry. Kind of like an AOV output you'd get from a renderer for post compositing in something like Photoshop

[vocal narwhal]

You can just set any mesh renderer to Shadows Only

Oh, you mean recieving shadows. Sorry, I am assuming you're talking about built-in?

[wild vapor]

Correct: to be able to receive shadows

Sorry yes, built in

[vocal narwhal]

I have used https://github.com/keijiro/ShadowDrawer in the past

I would assume it still works

But it's not deferred 😐

[wild vapor]

I did come across that and saw the forward only 😔

[pearl sierra]

Hey guys! Does anyone know of a shader that takes in a mask that allows me to change the color of certain parts of the shader?

[open quarry]

how do i convert this to shadergraph?

[arctic vortex]

I'm trying to render a specific layer always on top of another specific layer, but keep all other depth rendering order. Anyone has any tips?

[arctic vortex]

(using HDRP btw 🙂 )

[livid sparrow]

Hey everyone! 🙂 Does anyone know how to access depthBuffer from RenderTexture in ShaderGraph?

[cedar swallow]

Hey everyone, I am pretty new to shaders. Does anyone know why my low poly water works great in the editor, but when exported to webGL only the foam looks good but the ocean part is not rendered?

https://streamable.com/aflctn

On the left is my editor, and on the right is my webGL build

[devout quarry]

Finally you can set the preview mode 🙂

[regal stag]

Yaaaaaay!

[solar sinew]

I wish there was a preview node for numeric values

just so I could easily view the output on some equations in graph

[livid sparrow]

Hey everyone! 🙂 Does anyone know how to access depthBuffer from RenderTexture in ShaderGraph?

[regal stag]

@solar sinew Remy's node library has "debug value" (and debug int) nodes for displaying a numerical value. The value passed into the Value input has to be constant for every pixel though or the result will be a mess. https://github.com/RemyUnity/sg-node-library

[solar sinew]

ohhh I had never seen that node. I'll check it out

I do love that library

[livid sparrow]

?"

[solar sinew]

Have you tried the Scene Depth node?

[livid sparrow]

?

[solar sinew]

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

You do also have to enable the depth buffer in your active render pipeline

[dapper pollen]

for the purposes of deciphering shadergraph code, are VertexDescriptionFunction & SurfaceDescriptionFunction the main vertex and frag programs?

[regal stag]

Kind of. The real main vertex and fragment programs are in the include file depending on the master node. e.g. Unlit includes :
https://github.com/Unity-Technologies/Graphics/blob/master/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/UnlitPass.hlsl
https://github.com/Unity-Technologies/Graphics/blob/master/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/Varyings.hlsl
BuildVaryings is called in vert, which calls the BuildVertexDescriptionInputs & VertexDescriptionFunction functions from the generated graph
and BuildSurfaceDescriptionInputs & SurfaceDescriptionFunction is called in the frag function.

[dapper pollen]

thanks, its really confusing to track down whats what

[oak yacht]

What does this mean?

Shader error in 'VoxelEngineShader': Program 'CSReset', error X3020: all template type components must have the same type at kernel CSReset (on d3d11)

I tried changing one of my RWStructuredBuffer's into a Texture1D

ah it doesn't like my using a struct for the generic argument

[warped yarrow]

so I'm trying to make a camera effect shader in HDRP using Graphics.Blit(gonna be pushing to a render texture), back in the old render pipeline and URP I can just do tex2D(_MainTex, output.uv) and I can get the color of the screen, but in HDRP I haven't managed to get that working using the new HLSLPROGRAM stuff. Does anyone know what I'm doing wrong?

    Properties
    {
        _MainTex("Texture", 2D) = "white" {}
    }
    
    HLSLINCLUDE
    
     #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
    #include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"

    struct input
    {
        uint vertexID : SV_VertexID;
        UNITY_VERTEX_INPUT_INSTANCE_ID
    };

    struct output
    {
        float4 pos : SV_POSITION;
        float2 uv : TEXCOORD0;
        UNITY_VERTEX_OUTPUT_STEREO
    };

    output vert(input i)
    {
        output o;
        UNITY_SETUP_INSTANCE_ID(i)
        UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);

        o.pos = GetFullScreenTriangleVertexPosition(i.vertexID);
        o.uv = GetFullScreenTriangleTexCoord(i.vertexID);
        
        return o;
    }


    // uniform Texture2D _MainTex;    
    TEXTURE2D(_MainTex);
    SAMPLER(sampler_MainTex);

    float4 frag(output o) : SV_Target
    {            
        UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(o);

        #if UNITY_UV_STARTS_AT_TOP
        if (_ProjectionParams.x > 0)
            o.uv.y = _RTHandleScale.y - o.uv.y;
        #endif
        
        uint2 positionSS = o.uv * _ScreenSize.xy;

        float4 col;
        col.rgb = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, o.uv);

This is the relevant code

Also would there be a way to do this using ShaderGraph instead? idk if Graphics.Blit takes shader graph shaders and how things work there

[oak yacht]

        var texture = new Texture2D(7, 1, GraphicsFormat.R16G16_SFloat, TextureCreationFlags.None);
        texture.SetPixels(colors);
        shader.computeShader.SetTexture(ShaderIds.CSDoWork, ShaderIds.Colors, texture);

Am I missing a step? In my shader, the colors always returns 0 no matter what index I pick, while the colors I'm passing to SetPixels are all non-zero values.

Texture2D<float2> _Colors;

...

outputBuffer[id.x] = _Colors[0,0].r;

This is along the lines of what's in my shader..

[dapper pollen]

getting an undeclared identifier from a void method(but just using the code from inside the method works)?

Varyings LitPassVertexSimple(Attributes input) {
    // shader spits out "undeclared identifier error" here
    LinearBlendSkinning(input.indices, input.weights, input.positionOS.xyz, input.normalOS, input.tangentOS.xyz, _LinearBlendSkinning_SkinnedPosition_3, _LinearBlendSkinning_SkinnedNormal_4, _LinearBlendSkinning_SkinnedTangent_5);
}
//
void LinearBlendSkinning(uint4 indices, float4 weights, float3 positionIn, float3 normalIn, float3 tangentIn, out float3 positionOut, out float3 normalOut, out float3 tangentOut) {
    <stuff here>/*, if <stuff here> is pasted into the above directly, theres no error and everything works*/
}

[sleek zealot]

is it possible to use one shader script in tthe Global area ? the shader just do an Cel Lighting. problem is logical if i attach it the onject is white because i want to texturize the object by my own .

[pearl sierra]

Hey guys! does anyone know why fog is not working with this shader? ```Shader "Unlit/Invertex/UnlitMaskedTint"
{
Properties
{
_MainTex ("Texture", 2D) = "white" {}
_Color("Tint", Color) = (1,1,1,1)
_MaskTint("Mask Tint", 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;
            float2 uv : TEXCOORD0;
        };

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

        sampler2D _MainTex;
        float4 _MainTex_ST;
        float4 _Color;
        float4 _MaskTint;

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

        fixed4 frag(v2f i) : SV_Target
        {
            float4 col = tex2D(_MainTex, i.uv);
            float mask = col.a;
            col *= _Color;
            return lerp(col * _Color, col * _MaskTint, mask);
        }
        ENDCG
    }
}

}```

[light anchor]

folks, is it possible to use the color property value of a sprite renderer in a shader graph?

similar to how _maintex works

okay, I've done it 😄 reading vertex color works

[livid sparrow]

@solar sinew I want get it from render textures.

[neon gull]

Is it possible to identify the data of an async GPU readback request somehow?

For example, I am requesting data every frame (in an editor tool) and I am using the same readback action to handle the request result. However I have to interpret the result differently for every frame as the data is for different parts of the map. Therefore I need to be able to send some additional parameters along with the readback request to identify it. Is this possible? Thanks for the help!

Alternatively it would be enough to know whether the request order is guaranteed, as this would allow me to keep track of the requests in a separate queue, however I can't find any information on this online

[regal stag]

If you're using a Queue<AsyncGPUReadbackRequest> to keep track of them, It would probably be possible to swap AsyncGPUReadbackRequest out for a struct or custom class containing the request with other data.

[neon gull]

... I am stupid af. I just realized that AsyncGPUReadback.Request returns the the AsyncGPUReadbackRequest and I can simply compare it to the one I am getting as parameter in the callback. I wasn't paying attention to the return value of the request function, I thought it is void.

Thanks! 😂

[winter hamlet]

When using normal to height its not possible to connect to the normal node. Does anyone know why?

[regal stag]

It cannot be connected to the "Vertex Normal" as the Normal From Height node uses the partial screen derivatives (ddx, ddy) to calculate the normal. (These are only available in the fragment stage of the shader)

It should be connected to the fragment's version of the normal instead. On the PBR Master or HDRP Lit, it's the "Normal" port.

(This defaults to Tangent space, which means you should use the Tangent space option on the Normal From Height node. It's possible to change the space on the master node if World is required for other calculations though).

[winter hamlet]

aha, so If i make a custom node that returns it to world space it would work?

[regal stag]

No, it can't ever be connected to the Vertex Normal port. Use the other Normal port instead. I've edited the above to try make it clearer

[pastel tapir]

how can i change texture size in material ?

[arctic flame]

quick question

does anyone have a unity standard PBR shader that seperates the transparency and albedo into seperate maps?

i wanna UV Animate the albedo layer but not the transparency

[digital gust]

I mean, you can just split node it and feed your albedo and alpha with whatever you need

[arctic flame]

oh, could you show me how to do that ?

[digital gust]

You should show, what you did so far in the pbr shadergraph 😉

[arctic flame]

oh, i haven't made any changes yet.

[digital gust]

Ohh okay. Well, I advice you to just install shadergraph if you are using URP or HDRP and just go through a simple tutorial, you will understand it quickly 🙂 Its just node based drag dropping tbh

[arctic flame]

whats the use of the GPU Instancing checkbox?

it looks like i can instance materials while it's turned off

[lapis hull]

sorry to interrupt but does anyone know how to get rid of this seam in a PBR graph shader

[digital gust]

I think you can then change values on every material sharing the same shader, but you should read the docs rather asking me 😉

[digital gust]

looks like your noise is either not repeatable or your UVs are not set to the right ones

[lapis hull]

how do i offset it to make it repeatable

[digital gust]

It is not possible with the shader graph node, you might just create / download your own texture and use that which is tileable @lapis hull

[arctic flame]

@digital gust i figured out how to create a surface shader that does what i want :)

[digital gust]

Wasn't that hard, right? 🙂 Shader graph is quite easy to understand and fun to play around with 🙂

[arctic flame]

i didnt use shader graph 😅

idk what that is but i wrote one in code

[digital gust]

Ohh okay 🙂 In the end, shader graph is just a visual editor in Unity to create them without writing the code. But your issue was not too complex 🙂

[arctic flame]

what can i use to make my shader completely transparent when the alpha is at zero?

right now there's a funky black colour left behind

i tried noshadows and noambient those didnt seem to do anything

the rendering mode is fade

[thick fulcrum]

looking at the render queue, it suggests your using opaque rather than transparent...
perhaps try doing it as transparent render queue 3000 + or alter the shader code.
you will just lose some z sorting as transparency does not write to depth by default.

[arctic flame]

ah, that fixed it, thank you :)

graphics are weird.

i don't remember what math functions and things i have access to in shader code...

I need a min()

[lapis hull]

wouldnt procedural generated noise displacements not work on spheres at all then using shader graph??

[scenic musk]

yes

[arctic flame]

that's looking nice i think

[spring frost]

Why is "Overlay" the default mode of the Blend node, and not "Overwrite"?
I don't even understand what the hell it does.

void Unity_Blend_Overlay_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 result1 = 1.0 - 2.0 * (1.0 - Base) * (1.0 - Blend);
    float4 result2 = 2.0 * Base * Blend;
    float4 zeroOrOne = step(Base, 0.5);
    Out = result2 * zeroOrOne + (1 - zeroOrOne) * result1;
    Out = lerp(Base, Out, Opacity);
}

Obfuscate much?

[spring frost]

Beautiful lensflare. Is it geometry or post?

[arctic flame]

the lens flare is post, the flame is geometry

[wheat quail]

I need someone to point me in the right direction. I have this toon shader and I like the dark shadows it makes during the day, but at night if the player is being lit I want the dark side to be slightly visible and not just a silhouette.

[arctic flame]

also its all material animation, no modification of the mesh

[regal stag]

I personally never use the Overwrite mode anyway, it's exactly the same as a Lerp node so I just use that.
The blend modes should be the same as software like photoshop, so there are probably tutorials that show what they do / look like from a non-code perspective.

[spring frost]

Ah yeah Photoshop.

Probably that's why such an obscure algorithm is default. It does look nice, but also totally wrong to someone used to Lerp the crap out of everything.

Glow and Screen and stuff never made sense to me, not even in Ps.

[regal stag]

Yea same, I haven't looked into them that much and never really use blend modes.

[arctic flame]

ignition sequence (for those interested)

[spring frost]

Nice, I really like it.

Hmm, I'm looking for something that doesn't really exist 😉

I'd like to spherically reverse-project screen positions from the camera view direction so any way the camera moves, it looks at an infinite flat plane.

I think I need to project something onto the near plane but I'm not sure.

Basically a world position offset for Screen space. If that even makes any sense. (it doesn't exactly with perspective correction, but it only needs to be reasonably accurate at the screen center.

I am working on a halftone mixed lighting system but the stippled channels look awkward especially if the camera moves.

Because basically the object moves through a field of these stipples. I've checked some movie references coughspiderman and there they just put the hatching into Object space, which of course doesn't quite work for anything that isn't a movie where you have perfect control over where something ends up on the screen, and where it is gonna move.

It actually looks ok at 30 fps maybe this is my life now.

(I want to set 120 fps as the target framerate for my game actually, but also want to mess with animation on "twos", which for me would be on... eights or tens)

[spring frost]

Triplanar projection could work but it gives me very limited control over the screen space side of things.

[wheat quail]

if there like an emission node in unlit shadergraph or something I can use to make my character emit light?

[spring frost]

It's called color.

Just add. 🙂

[wheat quail]

does making colors hdr make them emissive?

[spring frost]

No.

But HDR colors in fragments may be picked up by post processing effects, such as bloom.

If they are beyond the threshold.

[wheat quail]

ok i think i get wat ur saying now

[spring frost]

Emissive colors are really just "unlit", so your entire graph is emissive. If you do any lighting calculations in it, then you can just mix in the parts that are supposed to be "emissive" in the last step - by adding them to the final color.

Don't saturate() the final color though, you usually want it to be able to go above 1.0 on the glowy bits so you can bloom the heck out of them.

So happy I got a sharp and a smoothed normals channel... now I just need to find our how to change camera angles or angle deltas into an affine transform (for tiling and offset)

I'd rather do this without a global shader parameter.

I'd also like to not add another texture lookup, there are gonna be plenty 😄

[dapper pollen]

Is URP's Clear(Z+Stencil) event functionality defined somewhere in the lit shader? Im trying to fix ssao in my shader(which is largely based on URP lit), and the one difference when viewing with the Frame Debugger between it and the bultin lit is that in the Clear "event" clears the ssao effect from my shader but not lit

[drowsy topaz]

Hi everyone. Can someone help me ? I'm trying to replicate this shader from the tutorial. The tutorial is being made in Unity 2019. My project needs to be in 2020.2.f1 URP. I think there might be some compatibility issue. I can't make the "Get light data" script to work. I get the pink checker.
https://blogs.unity3d.com/2019/07/31/custom-lighting-in-shader-graph-expanding-your-graphs-in-2019/

[solar sinew]

https://github.com/Cyanilux/URP_ShaderGraphCustomLighting

some things have changed since 2019 and I'd look to Cyan's custom lighting examples to compare the code

[drowsy topaz]

ahhh this is what I was thinking thanks I'll review these scripts to see what was changed. I believe some of the global variables have changed like "getmainlight" for example don't exist in 2020 anymore.

[solar sinew]

GetMainLight still works

you might be running into some compatability issues between the old tutorial and shader graph 10.0

https://docs.unity3d.com/Packages/com.unity.shadergraph@10.1/manual/Upgrade-Guide-10-0-x.html

[wheat quail]

using an unlit shadergraph. how do i get a normal map to work in unlit?

im guessing i have to plug them in somewhere with lights

[solar sinew]

you can add different normal space blocks

[wheat quail]

thanks! didnt know that

[solar sinew]

have you seen Mixture? I know it uses some subgraphs from the surfgrad framework. Check out some of the subgraphs here, there are a lot of operations
https://github.com/mmikk/Surfgrad-Framework-Unity-Shadergraph

[solar sinew]

either way, this is the normal map subgraph I use

[wheat quail]

it doesnt like my normal map

normal map is greyed out

[drowsy topaz]

Thanks a lot @solar sinew

[wheat quail]

dane, do you use that normal subgraph in an unlit shadergraph?

[spring frost]

Thank you.

Currently wrestling with... every fragment normal being the same, wtf.

Arrrrgh

Hit undo after apply somewhere.

[solar sinew]

I'm trying it out now, I think usually what I do is have my normal map as part of my lighting calculation that then gets output to fragment color.

trying to remember... I personally haven't used vertex normal much

I think usually you would just input whatever UV you are using into the sample texture node and include that somewhere in the calculation that gets output to fragment color

[wheat quail]

i'll look into fragment color. not sure what that is

[solar sinew]

sorry

base color

it's in the fragment section of the master block

I've been jumping between 2019 and 2020 for different projects so apologies if I get mixed up anywhere along the way

[wheat quail]

well as long as i know its possible i'll dig up something in google eventually

[solar sinew]

you are just trying to include a normal map?

[wheat quail]

ya

[solar sinew]

oh also here is the link to Mixture: https://github.com/alelievr/Mixture
I had just linked you the framework of subgraphs it uses. The tool might be to your liking

[wheat quail]

interesting

[solar sinew]

okay back to normals

This is how I use a normal map for an unlit graph

then after the main light is whatever else you are doing in your shader

@wheat quail

[wheat quail]

thanks. i'll try to replicate. so the first pic is a subgraph and the second is that subgraph in the main shader?

[solar sinew]

yeah (there are actually additional layers after that but that's irrelevant 😅 )

the first is a subgraph, which contains the normal map subgraph

aka MainLightUnlit

then I input the sample texture node into the MainLightUnlit node

[spring frost]

Question: I have values from 0 to 1 of something.

How do I do something to the lower 25% and something else to the higher 25% of these, for instance?
Multiply by 4 and and saturate and subtract 3 and saturate respectively?

[solar sinew]

try the remap node

[solar sinew]

This shaderforge contour map shader I remade in shader graph could be useful reference for applying something to specific ranges using modulo and step
#archived-shaders message

[spring frost]

I don't quite understand why you do it that way but I like the shader idea 😉