archived-shaders

[mental bone]

The mip level is just a param of the sampletexturod node

If you want to sample the full res texture in the vertex stage just provide level 0 to it

[arctic flame]

ok yeah i think if my understanding of shaders is correct, then i'm stuck doing it in the vertex stage

[grizzled bolt]

You can do it in vertex stage, but I think you can do it in fragment stage just as well

[arctic flame]

i've done something wrong im just trying to puzzle out what

i'm looking for like the normal of the pixel in world space, that''s what i want to be changing

[grizzled bolt]

Like this with object space normals and with tangent space normals

At least these seem to look right to me

[arctic flame]

oh!

you're right

wonder why it's greyed out.

[grizzled bolt]

Tangent space normals are enabled, so object space normals can't be used

[arctic flame]

i see

would this work?

seems like it does...

[grizzled bolt]

It does but doing it that way causes some distortion around tight polygons

the second one is after converting from object space

[arctic flame]

so i make it first, then transform it to tangent space, and that's a better result?

ah :) this is cool! it looks to be working as i instructed

spazi, if you were to make a retroreflector what would your approach be?

the biggest drawback of this approach is that the retro surfaces is always acting that way even where that doesn't seem lifelike

like in the front here

[grizzled bolt]

Thread

[arctic flame]

i also wish i could make the cone of response narrower somehow but i don't think that's possible with my naive approach

[arctic flame]

hey everyone

how can i make the diffuse reflection of this red object only reflect red and absorb other light?

[grizzled bolt]

We already have a thread for this

[wraith wing]

thank you for suggestion. that would do.
but, is it possible to mapping based on world + normal coordinate like if the object is something that's need variation but not flat (let's say like roller coaster track)?.

[amber saffron]

It's not possible to follow properly a curve by only using world position and normal.
You can do things like simple shapes and lines, but if it is some sort of pattern you will break continuity

[arctic flame]

does anyone know how to unclamp the base albedo in pbr

[lunar valley]

why would something like this on a surface shader not work? cs IN.screenPos = ComputeScreenPos(v.vertex.xyzw); cs // -------- Calculate water depth -------- float nonLinearDepth = SAMPLE_DEPTH_TEXTURE_PROJ(_CameraDepthTexture, IN.screenPos); float dstToTerrain = LinearEyeDepth(nonLinearDepth); float dstToWater = IN.screenPos.w; float waterViewDepth = saturate(dstToTerrain - dstToWater); // Albedo comes from a texture tinted by color o.Albedo = waterViewDepth;

the surface is simply pitch black and not visualizing the depth

[civic lantern]

Unclamp? Maybe you want to enable HDR in the color property's settings

[arctic flame]

let me check.

[meager pelican]

Not sure, but try outputting the individual values (dstToTerrain, dstToWater).
I'm wondering, right now, if you're getting the same values, or if dstToTerrain is zero.

[arctic flame]

@civic lantern i'm not sure what you're referring to. im using hdrp

[grizzled bolt]

We did try that
Seems that HDRP clamps albedo values to maintain physical accuracy

[civic lantern]

Ah, well you could fake the same effect with emission I guess

[grizzled bolt]

The goal is to intensify reflected light for a more powerful retroreflector
I don't think there's a way to use emission for that without custom lighting functions

[lunar valley]

dstToTerrian is definitelly not zero but on one side of the sphere it seams to be darker but on the other side not changes with the distance to the terrain tho, and for the dstToWater seams to be exactly the same as dstToTerrain

that explains why waterViewDepth is black, but I am wondering why they are the way they are

[exotic moon]

does anyone have any good resources for learning about shaders? preferably like a youtube playlist or something

i found one but it was quite old

[grizzled bolt]

https://youtu.be/kfM-yu0iQBk Freya Holmér has one in video format
https://halisavakis.com/category/shaderquest/ HarryAlisavakis has a series for BiRP shaders
https://www.cyanilux.com/tutorials/intro-to-shader-graph/ Cyan has one for URP Shader Graph, plus some for more specific topics

[woeful breach]

how can i make the settings from the shader graph avaliable in the material ?

[simple violet]

Allow material override

[woeful breach]

thanks

[sacred stratus]

How do you
A: Get A native pointer to a computebuffer on the gpu while in c#
B: Set an offset to that pointer in bytes
C: Upload it and use it in a shader

[amber saffron]

@regal stag Sorry to ping directly on week end 😅
I know you've made some handy nodes and custom functions to get lights info in URP.
Did you by any chance also experimented to do the same with the built-in renderer ?

[regal stag]

Nah, I haven't really tried. But I have noticed there is a Lighting.hlsl in the shadergraph package under the BuiltIn target. Looks similar to older versions of URP. I'd guess this gets used? https://github.com/Unity-Technologies/Graphics/blob/master/Packages/com.unity.shadergraph/Editor/Generation/Targets/BuiltIn/ShaderLibrary/Lighting.hlsl

[amber saffron]

It seems to, but the code is ... surprising ...

Light GetMainLight()
{
    Light light;

#ifndef BUILTIN_TARGET_API
    light.direction = _MainLightPosition.xyz;
    light.distanceAttenuation = unity_LightData.z; // unity_LightData.z is 1 when not culled by the culling mask, otherwise 0.
    light.shadowAttenuation = 1.0;
    light.color = _MainLightColor.rgb;
#endif

    return light;
}

Like, if built-in api is defined, do nothing ?

[regal stag]

Yeah it's not really what I expected

[amber saffron]

On my side I tried to just use the _MainLightPosition value, but it seems to be a constant 0

[regal stag]

I tried searching for it on the github and can't find anything that sets that property too. Maybe this Lighting.hlsl file isn't actually used? 😕

[amber saffron]

Not sure, but this define could be set at c++ / engine level

[regal stag]

I guess could try some of the built-in shader variables like _WorldSpaceLightPos0, unity_LightColor, etc
https://docs.unity3d.com/Manual/SL-UnityShaderVariables.html

[amber saffron]

🤦‍♂️ Why didn't I try this first

seems to work (at least for the main light)

[regal stag]

I feel like additional lights will be more complicated, since doesn't Built-in use AddPass for those instead of everything in the main Forward one

[amber saffron]

The 4 first should be ok, but yes, other ones will get tricky

Still not sure why I can't get the shadergraph functions to work there

[amber saffron]

Looks like it's what the generated shader is doing after all 🤔 https://github.com/Unity-Technologies/Graphics/blob/master/Packages/com.unity.shadergraph/Editor/Generation/Targets/BuiltIn/Editor/ShaderGraph/Includes/PBRForwardPass.hlsl#L88
I'm so confused

[regal stag]

Yeah I've seen that too now.
As far as I can tell, it appears that the Built-in target is a weird copy of LWRP/URP but set up in a way that allows including the Built-in shader includes as well. Can kinda see that from that PBRForwardPass and Shims.hlsl : https://github.com/Unity-Technologies/Graphics/blob/master/Packages/com.unity.shadergraph/Editor/Generation/Targets/BuiltIn/ShaderLibrary/Shim/Shims.hlsl

The Lighting.hlsl does appear to be included in the generated shader graph code, but hard to tell if any of the functions are actually being used.

[amber saffron]

Pretty messy 😅

[meager pelican]

IDK what I'm looking at in that pic, but I'd be using the frame debugger next.

I'd also want to check if the water is in the transparent queue or not (depends on how you want to implement it)
Opaque objects write to depth and they're also drawn front-to-back, so water would be drawn first if they're in the same camera and queue.

[meager pelican]

Yeah :(, prolly "for historical reasons" and cross-compatibility, stubbing out some functions so things don't blow up. Light lists seem messy for all GPU implementations, due to how each thread has to process it and you end up with all threads processing most branches...

except for Forward+ rendering, with screen-space-tile based light lists or some hybrid. I'm looking forward to Unity's documentation on that, and since they appear to have abstracted much of it with macros, if they implement or plan to implement acceleration structures to search the light list(s) for each pixel.

Then we'll be in a post-deferred era with the locally-relevant light list available to all pixel shaders.

Unfortunately, my quick test of forward+ didn't have a million local small lights as being performant, we've probably all seen the demos of that on another site in native DirectX I think it was. But it did support a few thousand, IIRC. Would depend on GPU of course.

Anyway, just rambling....
Light lists seem to come up a lot here.

[main vigil]

Hi everyone! Iam following Brackets tutorial about shaders. It seems that since the video was uploaded, some things have changed, and I have a hard time getting the last part to work correctly. Everything except the color of my shader is working correctly.

This is how brackeys has it:

This is how I tried to make it work:

But I dont get the same result :(

His lines are red around his shader:

Mine are only on the edges, and even then they dont show up or change the color when I change my color variable.

Any help would be highly appriciated :)

[shell fable]

adding anything to white is still white (color channels are in the range of 0-1, so adding to 1 is still 1 in the end), if you had the same sprite as Brackey it would probably look like it does for him.
if you want to make it work for bright colors/white, try something like lerping the colors instead of adding for example

[main vigil]

@shell fable Ah! I see what you mean! Im still very new to this, and lerping does give me the effect, but changes the original color of the sprite, is there a way to fix that?

[sacred stratus]

Can someone explain to me how you can syncronize a computebuffer with the one on the gpu side,
I have following issue:

ComputeBuffer buffer = new ComputeBuffer(100,sizeof(float)*4);
buffer.SetData(someData);
material.SetBuffer("Name",buffer);
//Everything works fine untill now
Now I do 
Color[] dataB = new data[50];
buffer.SetData(dataB,0,30,50);
=> //My Shader still outputs the same colors

[hushed cairn]

would somebody be free to help me do some troubleshooting with a shader i got from the asset store? i had it working and now i can't get it working again and i'm probably missing something very obvious

[grizzled bolt]

You would instead lerp to the solid color using your noise as the mask or T

[meager pelican]

Look ok at 1st glance.
Was looking to see if there was buffer.apply() or something but I don't see it.
See https://docs.unity3d.com/ScriptReference/ComputeBuffer.BeginWrite.html for faster option, also see if shader bug is culprit.

[sacred stratus]

hm I see a lot of new stuff like computebuffer modes but not sure if that s it

[hushed cairn]

i keep getting these errors and have no idea why because the references textures are there

[shell fable]

don't know how good that will look, but try using a color conversion node and use the red overlay's brightness value (z value) as the lerp factor

[sacred stratus]

click on them it s gonna show you where

[hushed cairn]

i have but i still don't understand why the lines are causing issues

i tried contacting the person who made the shader and they don't know either, but what's confusing is it was working before and i don't know what's changed

[radiant meteor]

where can I find a list of reference names I can use? I know I can name it anything, but aren't there like "built-in" ones commonly used, like for normals it's _normal or something usually right?

[lime viper]

_BumpMap for normals, if you find the lit shader in the packages and select it you will get the full list of properties and their names

[radiant meteor]

ah okay, thank you

[exotic moon]

hey sorry i saw this a little late but ye i watched freya's video on it and it was pretty good, ill take a look at those other resource thanks :]

[meager pelican]

Use the inspector. Select the shader, and enable debug mode (google is your friend to find it if you need to).

[hushed cairn]

getting this rectangular grid-like effect with my shader, any idea why?

[tawny kelp]

following a tutorial for water shader, but this makes the water plane pitch black when depth > 0, and white when depth < 0. i want it to be blackish towards land, and white towards deeper parts

https://www.youtube.com/watch?v=gRq-IdShxpU this is what i was following

alright, so apparently i had to set surface type to transparent

it's fixed :)

[grizzled bolt]

Why wouldn't there be? Remap is just math and an unlit shader is just a shader that doesn't implement lighting

[surreal locust]

I would like to calculate normals in frag shader. anybody can help me?

[lunar valley]

float InvLerp(float a, float b, float v)
{
  return (v-a) / (b-a);
}
``` ```cs
float Remap(float iMin, float iMax, float oMin, float oMax, float v)
{
  float t = InvLerp(iMin, iMax, v);
  return lerp(oMin, oMax, t);
}```

[lunar valley]

I do not really understand what the problem is?

[tall chasm]

Using shader graph, how can I have it affected by UI mask?

at the moment I have a gradient shader graph for my ui background but it ignore it's parent's mask

[simple violet]

Shader graph is ñot compatible with ui

[tall chasm]

no way!

[main vigil]

Hi Spazi, im not sure I understand correctly, what do you mean by solid color? I tried putting my noise as the mask and it works good until I change the base color of my base sprite to anything but white, then the edge color changes with it.

Works fine when base color is white

edge changes to black when base becomes green, even though its still set to red in the material

[lunar valley]

clamp it to a small value then i guess

    float satur = 1 - cMin/ clamp(cMax, 0.00001, 1);

I do not think that, this is how you get the saturation from rgb

lets just say rgb = .5 so max and min would both be .5, 0.5/0.5 = 1, 1 -1 = 0, and the saturation with rgb being .5 is definitelly not 0

[hushed vigil]

but saturation is 0 if all rgb values are the same

[main vigil]

@torn dew I managed to solve it by tinting the sprite color before combining it with alpha :)

[lunar valley]

oh right it is I am so brain dead, my sincere apologies

[grizzled bolt]

Maybe you have some negative colors or values slipped in somewhere
This is how I'd do the same effect
As you can see I'm lerping to just the color

[main vigil]

I tried to change it to your, but I failed xd
I managed to make it work in the end by tinting the sprite before combine, so I will just keep it like this for now ^^

I really appriciate your help though !!!

[solar furnace]

Why is the preview not changing color?

[vocal narwhal]

presumably the shader is not compiling. Magenta usually means there's an error

[solar furnace]

I fixed it! i realised i didnt set the render pipeline asset in project settings

[peak sky]

hey guys, I have this massive shader file and my compiler gives me the "} expected" error. Sadly I can't figure out where I'm missing and why it happens... Any help is very much appreciated! I'm getting kinda frustrated on this :^)

[woeful breach]

I made a custom terrain shader but it stopped working when I imported the terrain tools package. can anyone help ?

[surreal locust]

How to correctly apply normal strength?

[fallow crystal]

#💻┃unity-talk message

if anyone can take a look

[half forge]

Hey there, ive never used shaders before And I wanted to try this fur shader. Can anyone point me to a tutorial on where to put this code?

http://www.shaderslab.com/demo-60---fur-shader.html

[amber saffron]

Download the file, import in unity, assign to a material, assign the material to an object

Might not work from scratch, it's pretty old

and for built-in renderer

[amber saffron]

What are you doing in your shader ?

[half forge]

Im not sure what you mean by download it, its just raw code

I see "download raw" but it just gives me the raw code again aha

is it to be saved as a.c file?

[amber saffron]

Yep, do this, right click "save as", and save in the unity project with .shader extension

[half forge]

Ahh okay. there are two scripts

Do I import both as .shader?

[amber saffron]

Ow, didn't see second one.
The second should be in the same folder, and named FurHelper.cginc

[half forge]

Thanks

[fallow crystal]

got it fixed by upgrading URP to 10.10.1

[half forge]

Not sure if this is just because its old and probably doesnt work anymore ahahaha

But I would guess so?

[amber saffron]

I think so 😅

[half forge]

Ill try to find an updated one

Ill probably have to learn to use shadergraph at some point

Im not sure what sort of artstyle I want to go for yet

[dire sedge]

Hey, so I have a shader which does some rendering and what not, but I would like to do something where I save the newly rendered frame somehow and then get the average of all the frames rendered from the beginning. A little like the code in this message. How would I go on about saving the render for a singular frame so I can use it later on?

_MainTex is already a variable in HLSL which gets updated when you render it, but I am not sure how I would save the old frame and use it

float4 frag (v2f i) : SV_Target
{
  float4 oldRender = tex2D(_MainTexOld, i.uv);
  float4 newRender = tex2D(_MainTex, i.uv);

  float weight = 1.0 / (Frame + 1);
  float4 accumulatedAverage = oldRender * (1 - weight) + newRender * weight;

  return accumulatedAverage;
}

[low lichen]

You need two textures for this. In your shader, you would read from one texture and write to the other. Then you'd swap them before the next frame.

That way, the texture you read from is the one from last frame and the texture you write to is two frames old.

[dire sedge]

Ohh I see, now how do I write to a texture? I am new to this whole shader thing haha

[low lichen]

The active render texture is what gets written to by the shader. I've been assuming that _MainTex is the screen texture.

Are you not writing a shader that is drawn full screen, with a blit maybe?

[dire sedge]

Yeah I assume that too, when I return a color in the frag function that pixel becomes that color

[dire sedge]

Thats right I am using graphics.blit on my camera

[low lichen]

Ok, so whatever you feed as the dst texture is what gets written to.

You may need an additional blit if you also want to render to the screen.

[dire sedge]

Hmm so maybe where I blit, I can put in the old texture like this?
material.SetTexture("_MainTexOld", texture);

Something like that?

Idk if its called .SetTexture, but you know how you can .SetInt or .SetBuffer

Like that

Hm I just dont know how to get the last texture then

[long moat]

is there a node or some HLSL code for custom node that converts Vector4 into Texture2D?

[low lichen]

You could copy the texture to another one after the blit, using Graphics.CopyTexture. You just have to make sure the texture you copy to has all the same settings.

[surreal locust]

Does I need both uv?

I saw that the result doesn't change using the same uv

[low lichen]

You only need this if you want to be able to change the Tiling & Offset settings of the normal texture separately from the base map. Otherwise, it will use the same settings as the base map.

[brittle bolt]

Hey all, I am trying to write a surface shader in shader lab that uses uv0 for a certain shell layout, and uv2 for laying another grunge texture on top of that. What I am finding is that the grunge texture is getting its own uv channel, it is not using the shell layout from uv2. Really been struggling.

https://hastebin.skyra.pw/lanosatusa.csharp

[surreal locust]

if my base tex is 2kb and normal tex 512b?

[grand jolt]

any suggestions on shaders to achieve the look of OSRS? Dithering, pixelation, etc? I tried pixelation but the effect was too strong

[amber saffron]

It doesn't seem to be about pixelation, just old tech : low res textures, vertex lighting, no normal/bump maps

[grizzled bolt]

Lack of antialiasing is probably what makes it look "pixelated"

[grand jolt]

thanks @amber saffron @grizzled bolt - I know they used some sort of dithering for the shadows though~~, and the lighting had that "ring" look~~ hmm no lighting at all actually, until later

this is antialiasing?

[grizzled bolt]

I can't see any lighting, or textures in the examples I can find of OSRS
Or shading either, looks like shadows are stored in vertex color the same as all material variance
Only visible pixel boundaries are the hard un-antialiased geometry silhouettes and point filtered UI images and text
Some select spots seem to have texture mapping but I can't tell if they're bilinear filtered or point filtered, either are valid options

[grizzled bolt]

On the right we seem to have gotten rid of the pixelated outlines thanks to antialiasing, and there's more textures though vertex coloring seems to be used a lot still
Can't see clearly enough how the shadows are done

[grand jolt]

thanks for the explanations 😄

[amber saffron]

Shadows look like good old "blob shadow" effect

[grand jolt]

shadows like this - something like a gradient

[grizzled bolt]

These are probably not reactive "real" shadows in any way, rather more details added with vertex coloring

The characters will likely have transparent sprites projected below their feet

[cunning glacier]

this is my first time using shaders in unity (I'm coming from using GLSL), how can i set up a fullscreen pass that can "communicate" with a c# script?

[long moat]

anyone?

[amber saffron]

No, it doesn't make sense ... what do you have in mind ? What are you trying to do ?

[amber saffron]

Search for "custom post process"

[long moat]

im trying to make a custom POM as the default one acts strange

[cunning glacier]

can i use glsl instead of hlsl in some way?

[amber saffron]

No

[long moat]

so there is no way to convert vector4 back to texture2d?

[amber saffron]

The default PoM nodes takes a tex2D as input, and outputs values ... why would you want to do it the other way around ?

But no, you can't convert a vector value to a texture object

[long moat]

to do something like this

basically to modify the depth map

[cunning glacier]

is there a way to just assign the shader to the camera?

[amber saffron]

Okay.
Well, you will have to make your own PoM node, and input the remaping values to it, as PoM is sampling the texture in a loop, you will have the remap the sampled value each time

[amber saffron]

Kind of what a post process is

[cunning glacier]

then i didn't get the process, can you quickly explain it here?

[amber saffron]

btw, the node on the right looks like the regular parallax node, not PoM ?

[long moat]

oh no, it is a custom POM from this video: https://youtu.be/LKhGqKYOmbo

wait.. now that you mention it.. it is indeed just a parallax mapping

what is the difference then?

[amber saffron]

Looking at the code, it's PoM

[amber saffron]

For built-in renderer : https://docs.unity3d.com/Packages/com.unity.postprocessing@3.2/manual/Writing-Custom-Effects.html
For URP : https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@15.0/manual/post-processing/post-processing-custom-effect-low-code.html

[cunning glacier]

what is the difference between the two?

[amber saffron]

Here's where you can remap the heightmap value : https://github.com/anaseinea/Parallax-Mapping-Node-Unity/blob/master/paralaxNode.cs#L49

[long moat]

is there a way to change the code so it will take as an input Vector4 instead of Texture2D? from what it looks, it is necessary for it to be texture2d

[cunning glacier]

and can i use hlsl instead of the graph for URP?

[long moat]

oh, hmm.. you mean like connect that node as input?

[amber saffron]

Parallax Mapping will "blindly" offset the UVs based on view direction and height map value for offset.
Parallax Occlusion Mapping will recursively sample the heightmap to hit a sort of "virtual surface" represented by the heightmap, and return the UV offset. It will occlude the ray base on the map

[amber saffron]

No

[cunning glacier]

i mean the difference between URP and built-in-renderer ;)

[amber saffron]

I mean like : add the remap input to the node, and add the remapping math in the node code

[amber saffron]

I recommand to use the graph to avoid all the boilerplate code required for the shader.
You could use a very simple graph, and a custom function node storing your HLSL code

[long moat]

alright, i will try that, thank you!
also, another thing i've been looking, do you know how I can enable this POM to have it's own shadows? from my testing it has no shadows at all

[cunning glacier]

my goal is to do everything in hlsl, so i can just make a shadergraph, add a function and write it like normal and it should be done right?

[amber saffron]

Just for acknowledgement : shadergraph has it's own pom node.

For shadows, you will need to also offset the depth in the shader : this is only supported in HDRP

[long moat]

trying to make something like that

[amber saffron]

Yes

[long moat]

oh, so there is no workaround for it for URP?

[amber saffron]

It is technically possible, but you need to modify the generated shader

[long moat]

i see, alright thank you

[honest patrol]

Are there any known ways to make a 3D skybox?

You know kinda like in source

Where you set up objects and they get kind of projected onto the skybox

There's also this unity game called distance that also does this

[grizzled bolt]

Camera stacking is one way to do it
URP importable examples have an example of exactly this kind of setup

[honest patrol]

Oh that's great

Where can I find those examples?

[loud turtle]

Is there a way to achieve this effect but only for specific objects? If yes, then how

https://youtu.be/Sru8XDwxC3I

Every single tutorial makes a script for camera, but i want it only for specific objects

[grizzled bolt]

"Samples" in package manager under URP package
If you're not using URP you will have to look for something else, but the principle is pretty universal
(Many other official packages have great importable samples too)

[honest patrol]

I couldn't see those

Guess I gotta update my version

ty

[honest heath]

Hi all. I'm pretty new to Unity, and I am just looking for some advice about an effect. I have a shield sprite for a 2D spaceship, and I want the shield to appear from the center out on input from the user. Is using a shader the best way to do that? If so, would you be so kind as to point me toward the nearest bone?

[grand jolt]

I appreciate all your help and tips

[neat hamlet]

use the stencil buffer

same effect for fullscreen, but with a specific stencil buffer ref value to check against

in BIRp its done with adding a stencil buffer block, in URP you can do it with renderer features > Render Objects

[loud turtle]

this is really advanced

[analog raptor]

When I create a new shader graph, it creates a child material inside it. If I use/assign this child material to an object I can't edit any of the properties I've exposed.

I can work around this by creating a 2nd material outside the shader graph and referencing the shader, but now I have 2 duplicate materials that show up in any search boxes, one of which is not usable for me.

Ideally I would just use the material in the shader graph by making it become editable when applied to an object or delete it, but haven't been able to figure out how to do either of these. Is there a way to do either of these things?

All the tutorials I've found do not seem to have this problem, they all manually create a material.

[grizzled bolt]

What do you mean by "material inside it" precisely?

[analog raptor]

Not sure the term 😛 but here is a picture:

[grizzled bolt]

This seems to be a brand new feature/quirk of SG or material variants possibly
Not something I've seen before

Probably for convenience so you can quickly use a material with default properties

[analog raptor]

thanks

[dull orchid]

Hello
I can't connect the subtract node from scene depth and screen position to my smoothstep node

I want to change my vertex position only if the mesh is not clipping in itself

[grizzled bolt]

Scene depth node can only be used in fragment shader stage

[dull orchid]

Oh

So how I can check if the current vertex is not clipping in the mesh?

Or change it to draw over the mesh if it's clipping

[dull orchid]

Do you know how I can do something similar in the vertex stage?

[grizzled bolt]

I don't have any ideas
That sounds many kinds of tricky

[dull orchid]

Ok thanks anyway
I will try to do something about that

[grand jolt]

i downloaded a water shader asset and its pink...

[simple violet]

that means its incompatible

or it has outdated api calls

[grand jolt]

okay

cool

[flat orchid]

How i can make lazer like this using shader graph

[tacit parcel]

looks like simple image to me

[flat orchid]

can i make this lazer using shader graph

[tacit parcel]

Yes

[flat orchid]

how i can make this rough idea

[tacit parcel]

I'm not sure what kind of laser do you want to make, from the image, it looks like simple image

[amber saffron]

It's exactly what @grizzled bolt said.
The idea is that you can use the material subasset on an object, and if will always reflect the default values of the graph, but you can also make a material variant (or even a chain of variants) from it, allowing to inherit some of the default values, and override the ones you need.

[flat orchid]

okay

[tacit parcel]

maybe post a video or gif so we can see the laser animation

[flat orchid]

https://youtu.be/oXKiRLAlqXYn from 1:35 you can see how its working

@tacit parcel

[amber saffron]

Either it's a lot of small sprites moving, or a line mesh with a scrolling texture

[flat orchid]

yes i am also creating shader graph but texture is not moving

@tacit parcel

[tacit parcel]

scrolling texture in shadergraph
https://www.youtube.com/watch?v=sL2o82VTxcM

[flat orchid]

yes but my custom made texture is not moving

[tacit parcel]

show us your shadergraph setup

[amber saffron]

Why the Vector2 node ?

[flat orchid]

two decide direction

[amber saffron]

No

Wrong

You should have put it before the tiling and offset

multiply -> vector2 -> offset

[flat orchid]

but default particle texture is working

[amber saffron]

Default particule texture should show a gradient disk

[flat orchid]

i did't get it

[tacit parcel]

your texture gradient horizontally, but you are scrolling vertically

you should rotate your texture 90 degree using image editor

[amber saffron]

tbh, I'm not even sure to fully understand what I'm seeing in that last screenshot XD
The UV of the sample node has a constant X value, but the gradient is still horizontal 🤔

[tacit parcel]

The screenshots look all blurry here, I can only guess which is which 😅

[amber saffron]

But @flat orchid trust and try my maths :

• Time x speed for the scrolling speed
• ↳ Vector2 X or Y (and other component to 0) for the scrolling direction
• ↳ Tiling&Offset offset input to make the UV scroll (and adjust tiling to your need)
• ↳ Sample UV input

[flat orchid]

still not working for my custom texture

[amber saffron]

plz show graph, and texture import settings (also please zoom enough in the graph so node names are visible)

[flat orchid]

texture

[amber saffron]

Import settings ?
I suspect that it is not tiling

[amber saffron]

Yep, change the "Wrap Mode" to "Repeat"

[flat orchid]

nothing happened

[amber saffron]

Did you apply the import settings ?

[flat orchid]

yes , ofcourse

[amber saffron]

Oh, in the graph, you've set the tiling to 0,0 : it is collapsing all the UVS.
Set it to the default 1,1

[flat orchid]

thanks bro its not working like i want but now i am understanding how texture actually works

[dire sedge]

I have this weird problem
So I made this simple shader which takes in a RenderTexture, I called it _MainTexOld. The only thing the shader does is return _MainTexOld pixels color + 0.1... I Graphics.Blit it to a RenderTexture I have saved in my c# script and then feed it to the same shader the next frame. So theoretically it should just gradually go from black to white right?

But the screen is just gray, and it does not increment? When I debug.log the pixels color before and after Rendering it, it's just gray?? Anybody have any idea why this is?

My code looks like this (Every frame)

RenderTexture _accuTex;
// _accutex does get initialised I just dont show it

// Prepare shader
ShaderHelper.InitMaterial(accuShader, ref _accuMat);
_accuMat.SetTexture("_MainTexOld", _accuTex);
_accuMat.SetInt("Frames", _frames);

// Render
Graphics.Blit(null, _accuTex, _accuMat);

// Show result
Graphics.Blit(_accuTex, target);

Oh right I will post the code of my shader

sampler2D _MainTexOld;

fixed4 frag (v2f i) : SV_Target
{
  float4 oldRender = tex2D(_MainTexOld, i.uv);
  return oldRender + 0.1;
}

[regal stag]

I would avoid using _accuTex as a texture being sampled in the shader (or used as source, which is kinda the same thing here) and the blit destination. According to the blit docs it leads to "undefined behaviour", possibly why it's just grey.

Instead, can use two RenderTextures and swap between them each frame. e.g.

private RenderTexture rt;
private RenderTexture rt2;
// Init (in Start)
    
// Render (in Update/LateUpdate/FixedUpdate. Also may want to pass Time.deltaTime into a float property, rather than just +0.1)
Graphics.Blit(rt, rt2, blitMaterial, 0);
(rt, rt2) = (rt2, rt); // swap buffers

// Show result
Graphics.Blit(rt2, target);
}

Or can use a CustomRenderTexture object instead with double buffering enabled, but I think that requires a specific shader.

[dire sedge]

I see! Thank you, I will try that out 😁

Yeah that did it 👍

[elfin wave]

how do i smooth out the transition of the black border into white?

[regal stag]

Can try replicating what the Rectangle node does, but use a Smoothstep instead of dividing by fwidth. https://docs.unity3d.com/Packages/com.unity.shadergraph@12.0/manual/Rectangle-Node.html
Or use box sdf and Smoothstep. https://iquilezles.org/articles/distfunctions2d/

[elfin wave]

thanks

[distant dirge]

ok so a potential solution is to put the object on a seperate layer, and then you can put the pixelated camera to only render object on those objects.

but it might be expensive not sure

thats a good question, does anyone know if cameras are super expensive even if you turn the culling mask to only render specific objects, what about if you do something like a single image rendering on the camera, is that expensive?

[arctic flame]

hhello

rain in the car's headlight is lit, but in the dark area it's not

this is cool and i like it but it only works on the reflected side

viewed from this angle the rain remains dark, what can i do to make the illumination carry through and be visible from this side of the particle?

i have my mat set up like this currently

[grizzled bolt]

You could try translucency or transmittance

I was working on that kind of material for URP using custom lighting functions, but it was bit too complicated for me so I shelved it
Custom lighting functions probably aren't a practical option for HDRP

[wild elm]

I am adding the keyword _ADDITIONAL_LIGHTS to Shadergraph since I’m using custom lighting. Should I use Shader Feature or Multi Compile? I’m super confused about that 🫠

[fallow crystal]

#💻┃unity-talk message

shaders question

[tacit parcel]

You can make multipass shader (assuming you are using built in, not sure how to do that in urp, sorry)
1st pass, draw the object itself
2nd pass, grab the drawn object
3rd pass, redraw the object with pixelated shader.

Is it expensive? It depends on how big is the object drawn in the screen space, but I've done this for topographic shader and it run well in low end android.

[arctic flame]

using translucency makes it go green apparently @grizzled bolt

[grizzled bolt]

Translucency requires a diffusion profile which if missing will appear green

[arctic flame]

oo

[amber saffron]

Refraction is probably a better candidate

[loud turtle]

this shi so complicated, and yes, im using urp

[arctic flame]

i believe that's how i had it before @amber saffron

unless i sset it wrong

[amber saffron]

Ah, you used thin mode. Maybe try the sphere mode, as droplets are basically stretched spheres

[arctic flame]

here it is on sphere mode

i tried different thickness and absorption distance

[grizzled bolt]

By transmittance I meant refraction
Apparently that refers to tinted refractions and absorption
Extreme IOR values will make refractive materials look incorrect

I wouldn't be surprised if 2.5 IOR makes them seem black or solid

[arctic flame]

it looks alright from the front

[amber saffron]

Try "realistic" values, like 1.2 for water refraction value, and 1 or 2 mm thickness

[arctic flame]

this seems to be getting closer

but the ideal is something like this

[amber saffron]

Do thos particles have some normal information ?

[arctic flame]

no, they don''t

[amber saffron]

It would probably help, as since they are currently "flat", they don't bend the light like srops would do

[arctic flame]

alright, one sec

[amber saffron]

Also, you might not need to make them fully transparent, maybe a little opacity would make them more visible.

[grizzled bolt]

I assume the refraction needs roughness also, since their speed would blur them out in reality

[arctic flame]

i use this normal

[tacit parcel]

this might be easier if faked using light shaft and multi layered scrolling texture, just saying

[arctic flame]

this is a strange effect

it refracts the frame quite intensely it seems

[grizzled bolt]

Raindrops are also quicker than any ordinary eye or camera can capture, so we expect them to look blurry and smeared when falling

[amber saffron]

The stretching when the camera move is what bothers me the most here :/

[grizzled bolt]

That looks weird for sure, but it seems kind of logical too considering the great relative speed of the camera here

[arctic flame]

oh im getting better results by playing around with translucent option

:D

[prime shale]

chat gpt writing unity shaders, lovely

[arctic flame]

@grizzled bolt :)

this is good but there's one thing i don't get

i'm not sure what is causing the particle lines to get aliased in this way

default resolution rendering helps but they're still aliased

[amber saffron]

Are they rendered in the low resolution transparent queue ? (shouldn't, else you wouldn't have refraction working)

Also, do you use an opacity mask to shape them, as you have the sphere looking normal texture ?

[arctic flame]

i removed the normal texture now because i didnt see any effect from it when comparing

i believe the lines also have no texture, they're just white rectangles

it's the default rendering queue here and they are sharper but still aliased

[amber saffron]

Do you have any form of AA enabled ?

[arctic flame]

yeah

[amber saffron]

Have the lines a bit wider with an alpha texture might give you a "free" anti aliasing (texture opacity sampling)

[arctic flame]

okay, i'll try it

is there a way to mask the refraction too?

[sour nest]

Does anyone know why unity refuses to render this cutout wall in a replacement shader?

The replacement render is at the top and the normal render is a the bottom

I do the replacing with cam.RenderWithShader(depthShader, "RenderType");

The shader has an opaque-only pass and the cutout wall is technically opaque

[tight phoenix]

How can I fill each of these hexagons with a random color?
The hexes are a result of a very long and complicated formula to describe hexagons, but I lack the understanding to find when/where in the huge graph to extract the per hexagon position
I know random color can be generated based on the pixel's position in world space, but how do I fill the hexes with that data to be able to do that?

If each hex was an individual game object it would be trivial to give each a random color based on world position, but because its its a texture, I can't figure out how to isolate 'one hexagon' to pass that data into the random function

how do I get filled hexagons instead of gradient hexagons based on world position out of this?

if I had solid color filled hexagons filled with a greyscale float where each hex was its rounded hexagonal position in world space nearest to the center of the hex it would be easy to get random colors, but I don't have that, I have hexes filled with gradients which is of no value to me

https://observablehq.com/@jrus/hexround

the answer is somewhere on this page

but its 1000000000000000000000000000% WAY too programmer, I cannot make any sense of this, its frustrating to know the answer is buried in this incomprehensible gibberish but im too stupid to find and extract it

[prime shale]

use chatgpt

seriously, I've used it actually when reading some graphics ressarch papers to help translate math equations to code, or even using it to translate from one programming language to another

give it a shot

<@&502884371011731486> @prime pivot nitro links bot

[tight phoenix]

ive tried, i cant find words to make it understand what i want

that page is not condusive to copy paste, if you try to make selections youll see it doesnt go into the text boxes of code

i know what i want visually, i cannot describe to gpt what i have and how to get what i want from what i have because im just cant

for reasons im not allowed to say

[swift loom]

Does anyone have any general tips on how to speed this up? I'm not sure what I'm doing that's causing it to be so slow except just having large amounts of code. Any ideas what kind of things to look out for or try to avoid? I'm doing some raytracing so there's a couple of for loops i'm calling as a method in a bunch of places for one which seems to be a huge culprit. Is it bad to have large amounts of globals or is it better to define them locally?

[low lichen]

When the Standard shader is set to Cutout, it changes the RenderType to TransparentCutout, so your replacement shader has to have a pass with that tag.

[sour nest]

I already figured it out, but thanks

I looked up the source code for the shaders and couldn't find the TransparentCutout part so I just assumed cutout used the Opaque tag

[tight phoenix]

an example of how it just doesnt get it

I cant seem to find the language to explain to it what I am trying to do, no matter how simple or complex it doesnt understand

another insane sollution that is way off the mark

How do I get random filled cells from what I have on the left?

[prime shale]

if your not able to get it to work then I would abandon chatgpt and jus tkeeping asking here

[tight phoenix]

Yeah thats what I am doing as we speak

my cells have no concept of world position, but I can't just add the world position to them because I don't want gradients in the cells, the cell must be entirely one single value across its entire face

but I dont know how to derive that

as it stands im plugging nodes into nodes with zero comprehension

and that will never result in what I need

so all I can do is ask for help

because I'm too inexperienced to know the answer, and too stupid to find the answer

all I can do is ask

its a struggle to even visualize if it working or not

part that confuses me is that my hexagons are a float

but coordinates are XY

but colors are Vec3

but I dont understand any kind of math to go from 1 to 2 to 3

the closer I get to a filled hexagon, it just turns into a solid wall of white, its not a hexagon at all

I cant even explain it to gpt I'm that clueless

[lunar valley]

how is that not a hexagon?

[tight phoenix]

its not a hexagon in the way I need it to be

https://cdn.discordapp.com/attachments/497874081329184799/1092916207155429416/image.png

I need this

this is what I want

I dont need anything else, I dont want to argue or fight, I just want results

[lunar valley]

so random colors or what?

[tight phoenix]

Yes, every cell to have a random color completely filling the entire cell

getting random colors is easy

filling hexagonal shaped cells is not

I dont know how to create that

[lunar valley]

you said something about checking each hexagon using world position?

[tight phoenix]

there is no other way to fill each cell with a random color to my knowledge

you need some value to create the randomness

[lunar valley]

use uvs instead

[tight phoenix]

sure, literally nothing changes between XY in uv space and XY in world space

doesnt get me any closer

[lunar valley]

yes it does, if you are implying that they are equivalent then...?

[tight phoenix]

No it doesnt and I dont know why you are fighting me on this

[lunar valley]

is this how you generate the hexagon tiles?

[tight phoenix]

yes

[lunar valley]

I cannot see the full extend of your code

[warm raptor]

has anyone attempted to create a shimmer effect for 3d textmeshpro?

[tight phoenix]

no diffrence between uv and world space

[tight phoenix]

let me get you that

[lunar valley]

not fighting, just eaying that they are not the same

[tight phoenix]

you are fighting me by insisting they are not the same because its important to you that you be correct, when for all practical and functional purpose they are the same. They are a vector 2 of values that range

[lunar valley]

can I also see what one hexagon so untilles looks like?

[tight phoenix]

There isn't a concept of one hexagon

or if t there is, I dont know how to get it

the hexagon only comes into existence at the vector 3 in this image, at every step before this is all squares

[warm raptor]

anyone?

[sacred stratus]

I'm really sure there is a solution as for squares you would just divide x or y by the square size and you would have the square coordinate

[tight phoenix]

I dont want squares, I want hexagons

here is my shader in its current state because I'm going to go take a shower and make dinner to clear my head

and I feel lik showing pictures is useless when I can just share the shader itself

[lunar valley]

we know what you want let us think

[lunar valley]

possibly stupid idea incoming, but whatever: as long as you know the maximum width/height of your hexagon you should be able to check what hexagon we are currently prossesing by checking how many hexagons fit into the coordinates we currently have if its the same amount we use the same color if its another amount we use another color. (no garantie of this theory, i haven't checked it mathematically, just logical thinking here)

[tight phoenix]

this is my randommization function/subgraph, but it only works if the hexagon's entire surface is all the same value

[honest heath]

Hi all. I'm pretty new to Unity, and I am just looking for some advice about an effect. I have a shield sprite for a 2D spaceship, and I want the shield to appear from the center out on input from the user. Is using a shader the best way to do that? If so, would you be so kind as to point me toward the nearest bone?

[tight phoenix]

a shader can do that fairly easily. Something like this should get you started

[tight phoenix]

set the Reference value to something sane and then use that to assign to the value in code to animate your shield growing out

[arctic flame]

more shader stuff today

i want to make snow based on the normal

this is my snow lerp:

how can i
a) make it interpolate the normal direction between verts
b) make it incorporate the normal map texture into the calculation?

[lunar valley]

what do you mean with a

[arctic flame]

so the amount of shading is based on the surface normal and you can see in the picture that this is different for each polygon, so they have hard edges

but this is not being caused by split normals in the mesh

i want the shader to be smooth

[shell fable]

a) I could be wrong but I think this has to be done in the model itself - either in the modeling software or if it's procedurally generated in the code (search for "smooth shading")
b) blend normal node should do the trick - blend between the mesh's normal (that you're already using) and the normal map (you'll have to define a new exposed texture of type normal map)

[arctic flame]

here's what my modelling is showing me: it seems to be using combined normals

in unity also the import settings uses 'import' and not calculate

so i don't think it should be changing them

finally here's when using a shader not made by me

so it's definitely my shader's fault i think but im not sure how to fix it, do you have any ideas?

for b, perfectt, thank you :)

[shell fable]

Unity docs say the "Normals" and "Blend Shape Normals" import settings should match, try setting both to "Calculate"

[arctic flame]

alright

hmm that didn't seem to change anything yet

whoa? i fixed it but uhh i don't know how

i was messing with the normal blending of a different part of the shader and that had an effect here too as u see

[amber saffron]

@tight phoenix If you're not getting what you want with the full nodes setup, may I suggest to maybe throw it away in favor to simply using a texture for the hexagons ?
You have 4 channels to store information, and from what I understand you might need only 2 or 3 to do what you want :

• one to store a gradient "shape" (distance field) of the hexagons to draw them
• one or two to store the UV relative coordinates of the center of each hexagon -> you could then use this as source for the random color

@arctic flame To use also the info from the normal map, you can :
Sample the normal map as usual -> use the transform node to transform the value as Direction from Tangent to World space.

Oh, and unless you want to tilt how the snow it applied, if it's straight from the top, just get the Y value for the normal, no need for dot 🙂

[arctic flame]

oh, you're right! good thinking

[amber saffron]

Can you describe a bit more your setup here ?
The default shader should not look like this

[amber saffron]

wdym ?

[tacit stream]

how do I use cubemap in shader graph? for some reason it looks like this

graph itself

[grizzled bolt]

I think it's something to do with the graph settings but I'm not sure what
Sometimes skyboxes seem to work despite the error "shader of this material does not support skybox rendering"

Had luck fixing it with these settings

[tacit stream]

worked with transparent only for some reason

or wait

now it works with opaque

🤔

mystery

is there any way I can apply fog on skybox?

[grizzled bolt]

The warning, the problem and the solutions online are all pretty arcane

[tacit stream]

for specific height only

[grizzled bolt]

You can sample scene fog color with Fog node, and then lerp a specific height of the skybox to that color

[tacit stream]

I'm not really following lerp specific height part

[grizzled bolt]

Using a height gradient such as this

https://timcoster.files.wordpress.com/2019/09/screenshot-2019-09-01-at-15.45.42-e1567345603862.png

You can get the height
Lerp your skybox color to your fog color using the gradient as the T

Before that step you can shape the gradient using multiplication, addition, power, gradient sampling or any math that helps

[tacit stream]

ok, so I have this remap part (blindly followed from tutorial)

I have fog node

how can I simply have alpha value per height with it?

[grizzled bolt]

The gradient is your "alpha" via the lerping

[tacit stream]

oh, I think I start to get it

now I'm not sure how to define specific height

where it starts gradient

and where it ends it

[grizzled bolt]

From the lowest point of the sky to the highest point

[tacit stream]

I mean in graph

rn I have it so gradient is applied globally

from lowest point to highest

I want it to apply on specific height

basically define horizone, where fog ends

[grizzled bolt]

That's what I mean by using the gradient as the T of the lerp

[tacit stream]

lerp of what values though?

[grizzled bolt]

You blend between A your sky and B fog color using T your gradient as the lerp factor

[tacit stream]

ooh

I see now

is there a way to dynamically create gradient though?

[grizzled bolt]

What do you mean by "dynamically"?

[tacit stream]

where height can be defined in material

[grizzled bolt]

Yes, for example by making properties of the remap's inputs

If you modify the Remap inputs by a lot you'll want to add a Saturate node after it so you won't be lerping with values below 0 or above 1

[tacit stream]

all right, this helped a lot

thanks

but one thing is still bothering me

[stone estuary]

somebody knows how to make a collider for a vertex shader?

[amber saffron]

Not possible.
You need to deform the collider mesh using the c# mesh API

[cunning glacier]

how do materials work for shaders?

[grand jolt]

is there a better way to do this?

(mainly the offset)

i was thinking of splitting the RGB channels and then offsetting those but that just doesn't seem to work

so i have ot sample 3 times

which i feel is unneccessary

This is a Uniform chromatic aberration shader that i somehow managed to make as my first shader

(I am in unity 2021.3.22f1 using URP)

[amber saffron]

A material hold the properties values for a shader : You can assign the same shader to multiple materials, and change the properties for each of them to change the look and behaviour of the shader

[amber saffron]

Indeed, the only way to do is how you did it : sample 3 times the texture

[cunning glacier]

how can i assign a shader to a material?

[amber saffron]

It's the topmost setting on any material :

[cunning glacier]

oh right

[cunning glacier]

after making the shader and assigning it to a material, how can i control it from a script (for example if the shader should be active or not)

[amber saffron]

What do you mean by having the shader active or not ?

Else, you can modify the material properties from script using the material API : https://docs.unity3d.com/ScriptReference/Material.html

[cunning glacier]

from my understanding i can do inside of my script Graphics.Blit and passing into it the shader material if i want the effects of the shader to be seen or just do Graphic.Blit and pass the source and target texture untouched if i don't

it's just that it isn't working for me

[amber saffron]

Oh, so you're using the shader in a blit. Ok

What is "not working" ?

[cunning glacier]

I'll send the code give me one sec so i can explain better

If i put this script in my main camera, assign to shaderMaterial the material that has the shader attached and edit boolean while the scene is on play nothing changes

private void OnRenderImage(RenderTexture src, RenderTexture target) { if(boolean) { shaderMaterial.SetTexture("_MainTex", src); Graphics.Blit(null, target, shaderMaterial); } else { Graphics.Blit(src, target); } }

boolean in this case should be a serialized bool

[regal stag]

What render pipeline is this in?

[amber saffron]

Graphics.Blit(null, target, shaderMaterial);

Look at the doc :

Passes source to the mat material as the _MainTex property.
So you are passing null as _MainText : the SetTexture line is useless.

And like Cyan pointed out, OnRenderImage is not supported in SRPs

[cunning glacier]

URP

[regal stag]

Then yeah, OnRenderImage is not supported. You'd likely want to use a Renderer Feature instead. e.g. https://github.com/Cyanilux/URP_BlitRenderFeature

Or if you're in 2022.2+ there's also a Fullscreen Graph & Fullscreen Pass Renderer Feature. https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@14.0/manual/post-processing/post-processing-custom-effect-low-code.html

[cunning glacier]

so should i use HDRP?

[amber saffron]

If you are a beginer, I suggest URP

[regal stag]

No, OnRenderImage isn't supported in HDRP either. I just explained alternatives

[cunning glacier]

then when is it supported

[regal stag]

Built-in render pipeline

[amber saffron]

Never

An other API or way to do the post process was introduced with SRPs

[cunning glacier]

i already feel comfortable with shaders, i just don't get how to set up them for unity

[cunning glacier]

so when making a new project i should use this?

[amber saffron]

Yes

[regal stag]

If you're so set on using OnRenderImage specifically, sure

[cunning glacier]

perfect

i'll try with that

[grand jolt]

is this unnecessary?

(is having the simple noise output into a vector2 slot going to duplicate the channels by default?)

[amber saffron]

Yes, by default casting a float into vector2 will set the value in the two channels

[grand jolt]

thank you :D

shadergraph is so cool

[leaden radish]

is there toon terrain shader for unity urp?

i know in unity srp there is a toon terrain shader

like how to achieve this kind of look in unity urp

in unity terrain

rest i have already done it

[grand jolt]

is it possible to ask unity to arrange this?

[stone estuary]

how do you turn a rgb into a texture in shader graph?

[lunar valley]

wdym?

[regal stag]

Shader Graph can't do that, you'd need to arrange manually. Adding groups around some nodes can help with organising. You can also collapse some nodes to make them smaller

[lunar valley]

oh that

[regal stag]

You don't

[stone estuary]

oh ok

[lunar valley]

are you intending to create a texture?

or modifying a texture?

[stone estuary]

creating a texture. i got a custom function to blur a texture but i have a rgb

[hollow comet]

How can I make my a spotlight cut through fog?

[grizzled bolt]

That's usually up to your render pipeline's type of sepcific fog

[cosmic prairie]

what do you want to blur on an rgb value

there's nothing to blur it with

[grand jolt]

ty

[grand jolt]

you're modifying a texture by blurring it though, no?

[idle zodiac]

Can anyone tell me why it isnt working?

[grand jolt]

what render pipeline are you using?

[idle zodiac]

How do I check it

[idle zodiac]

@grand jolt

[pulsar kelp]

Does anyone know whether it is possible to get BIRP shader graphs to work on Quest 2? It doesn't seem to work even with the very simplest shader. EDIT: the solution was going into unity's CGincludes and ripping out the relevant section. I don't love that, but it works.

Getting undeclared identifier 'UNITY_DISPLAY_ORIENTATION_PRETRANSFORM' at /2022.1.0b8/Editor/Data/CGIncludes/UnityCG.cginc(813) (on vulkan) whether or not I actually use Vulkan. This is both with and without "Apply display rotation during rendering" in the Vulkan section of Player Settings.

[idle zodiac]

It appears im not using a render pipeline and when I go to create one I dont see the "rendering" option under "create"

[mystic sable]

i have this shader for getting vertex color + alpha. it works for parts with proper vertex alpha but also screws with parts that are fully opaque like this doorway, any ideas how to fix this?

[deft frost]

Is there a way to have like a dissolve effect on a model affect all its submeshes?

[pulsar kelp]

Are they using the same material?

[deft frost]

Nope. The mesh typically has a body, mouth, and eye material, and they use shaders that deal with image arrays.

[pulsar kelp]

It is a transparent material, so it isn't depth sorted.

[pulsar kelp]

So you'd need to either pass the same dissolve parameter to each shader, or render the object and all submeshes to a render texture and dissolve that.

[deft frost]

So, if I were to take the RenderTexture approach, I could use a secondary object to dissolve the model as I see fit, correct?

[Like, a model with a special shader can basically mask out the render texture, right?]

[pulsar kelp]

Yes.

You could also write a render feature to do it.

[deft frost]

[I'm using built-in]

[pulsar kelp]

Then in that case you can use stencil buffer for masking.

[deft frost]

And if some objects have transparent geometry, that'll cause problems, right?

[deft frost]

So, I can configure the shader so it can decide if it writes to the stencil buffer or not?

[pulsar kelp]

Correct.

Haha, finally got it to build with no errors https://i.imgur.com/jBOXRr9.mp4

[mental bone]

Really cool is this using VATs or what did you use to achieve this ?

[pulsar kelp]

Similar idea with baked pivots, though I am animating them procedurally.

[mental bone]

Interesting. Care to elaborate on the baked pivots part? How does the texture work? @pulsar kelp

[deft frost]

Aw man... I wish I had the brains to do that stuff...

[grand jolt]

why does this not move the maintex texture?

like transform it

it does not move at all

[grand jolt]

the output wire is going out to the fragment color

[grand jolt]

holy shit i am so stupid i haven't connected the animated UV but the static one 😭

holy crap shaders are so cool

[pulsar kelp]

There is no actual texture for this one; you could bake the pivots to a texture basically the same way but I used the UV channels of the mesh itself, which lets you reuse the same material for multiple meshes.

This article gives a pretty good overview of the concept.

https://www.cyanilux.com/tutorials/fractured-cube-breakdown/

[mental bone]

Ok but how does the actual data look like? How do you group vertices by a pivot ? Im just interested in how the technique generally works. If you have some links about it that would be great.

Ah perfect

[pulsar kelp]

My version is a bit different, since he's using normalized uv values, but the basic idea is the same.

[mental bone]

Oh its from Cyan ofc

[pulsar kelp]

Yeah, you can learn a lot of good stuff from him. 😄

My method of baking is somewhat different since I'm not using blender

That's all you need to bake pivots in houdini. The biggest difference is that you don't need to remap the pivots from 0 ,1 to -1 ,1 . You still need to invert the x. Like he says, that could be fixed by fiddling with the baking, too.

Just multiply the vertex positions.

I put too much time fiddling with vertex colors instead of UVs, but that was a pretty big dead end.

Vertex textures work basically the same way, except that it is stored as a texture.

[atomic jolt]

Hey I used a position node to make a flag wave, and when I hit play it moves my flag off of the pole and to a spot far away from where it should be, is there a way to fix that?

[pulsar kelp]

How do you have it set up?

[atomic jolt]

Like this

(Unfortunately, no I could not have just taken a screenshot lol)

[atomic jolt]

Was that directed at me?

[reef turret]

Hi does anyone know how to create a shine/light sweep effect on 3D object using shader graph? I've been trying to do it for last 2 hours but couldn't achieve it, i've tried using a rectangle, rotate it and move it bottom left to up right and only make the pixels within the rectangle range glow but failed with it since my texture doesn't go from left to right in 3D world, it's scattered and packed on islands like many textures

i thought about using the position instead of the texture but i don't know how to rotate it 45 degrees to look like a light sweep

[vocal narwhal]

something writing to depth when it shouldn't be

It looks like you should just be using alpha clipping, which can write to depth just fine, there's no need for true transparency here is there, everything looks to be transparent or not, no half-way

I have no idea how you made this material in the first place

yes, but is this your own shader? Or are you using a built-in material, what is it?

Expose a value like _Cutoff ("Alpha Cutoff", Range(0, 1)) = 0.5 so you have a slider to control the cutoff,
make sure you declare it float _Cutoff;
and then put this at the end of your fragment block
clip(color.a - _Cutoff); (with your alpha replacing the obvious)

it makes it so anything below the cutoff value is below 0, which the clip function interprets as completely transparent or not

seeing as it's interpreted as completely transparent, it shouldn't write to depth

[pulsar kelp]

You aren't actually making use of the original z position of the vertex, so it will always be the sine output times the U. You are replacing the position instead of offsetting it.

[atomic jolt]

Thank you! Any idea how to fix it?

[amber saffron]

The outline is probably from the RGB channels :
Force RGB to a single color and only use alpha for masking, you should be good

[cosmic prairie]

yeah, the outline is because in the image the color fades to black before the alpha reaches the cutoff threshold

I guess you would wanna make it a bit thicker? 🙂

[amber saffron]

Looks like you basically want an opaque with cutout

[regal stag]

Usually +, but that depends on the BlendOp. https://docs.unity3d.com/Manual/SL-BlendOp.html
(Add is the default)

[lunar valley]

what is that supposed to be?

looks neat, what is that tho?

[cunning glacier]

i managed to make my shader work with Graphics.Blit but is there a way to make it work in the scene view too?

[lunar valley]

not by default, but this guy has made a script (its in the description for download) which should apply the blit to the scene view as well

https://youtu.be/iZ6ARyKnD-k

[amber saffron]

If you do not set a destination in the blit command, it should render to the screen.
https://docs.unity3d.com/ScriptReference/Graphics.Blit.html

To blit to the screen in the Built-in Render Pipeline, follow these steps:

Set dest to null. Unity now uses Camera.main.targetTexture as the destination texture.
Set the Camera.targetTexture property of Camera.main to null.

[cobalt totem]

I'm trying to fix a little quirk in my volumetric ray-marching tornado shader. When the camera enters the volume the tornado is being rendered in, the transparency of the funnel increases:

(left: outside, right: inside)

I calculate the ray-box intersection, and start the raymarching from there. The step size is set to distance inside box / number of ray marching steps

I'm not sure if it's a ray marching, or blend mode issue

[midnight lily]

Is there such a thing as "extending a shader"?

I have this built in unity toon shader package, and I wanted to add things to it

but I don't want to need to figure out how this black magic work, just, do extra things after it

do I need to make a copy of it and modify the copy or there is some way to add stuff before/after the shader passes like it was a c# class?

[amber saffron]

Nope, copy and modify is the way

[grand jolt]

how do you rotate a UV?

figured it out

that was obvious

how can i get a discreet time output, like 10, 20, 30?

i started messing with shaders yesterday

im very new

[amber saffron]

Time -> floor -> multiply by 10

[grand jolt]

ooo

yeah that makes sense

ty :D

yay i made a glitch effect now

does anyone know why the shadow is bugging?

aaa

[tight phoenix]

const float2 s = float2(1, 1.7320508); // 1.7320508 = sqrt(3)

float3 hue( float c )
{
    return smoothstep(0.,1., abs(fmod(c*6.+float3(0,4,2), 6.)-3.)-1.);
}

float random(float2 co)
{
    return frac(sin(dot(co.xy ,float2(12.9898,78.233))) * 43758.5453);
}

// xy - offset from nearest hex center
// zw - unique ID of hexagon
float4 calcHexInfo(float2 uv)
{
    float4 hexCenter = round(float4(uv, uv - float2(.5, 1.)) / s.xyxy);
    float4 offset = float4(uv - hexCenter.xy * s, uv - (hexCenter.zw + .5) * s);
    return dot(offset.xy, offset.xy) < dot(offset.zw, offset.zw) ? float4(offset.xy, hexCenter.xy) : float4(offset.zw, hexCenter.zw);
}

void mainImage_float(float2 fragCoord,  out float4 fragColor)
{    
    fragColor = (0,0,0,0);
    //float2 uv = (2. * fragCoord - _ScreenParams.xy) / _ScreenParams.y;
    float2 uv = fragCoord;
    const float tileAmount = 3;
    float4 hexInfo = calcHexInfo(uv * tileAmount);
    fragColor.rgb = hue(random(hexInfo.zw));
}```

I am trying to port a shader from Shadertoy to HLSL.
I've gotten to the point where it doesnt throw an error, but the resulting shader is pure black. 
What is wrong with this code?

I fixed alpha to be 1 instead of 0 but its still pure black

https://www.shadertoy.com/view/ll3yW7

this is the code im trying to convert

[grand jolt]

is fragCoord normalized?

[tight phoenix]

Should it be? Right now I am passing in UV for that value

[tight phoenix]

this is all I am doing, I plan to make it do what I want later, I just want it to show anything at all to begin with

Normalizing it first made no difference

[grand jolt]

i couldn't help you im a noob ¯_(ツ)_/¯

[regal stag]

You may need to add static at the very beginning to the s variable. By default, values in the outer scope are set externally so default to 0 even if you try to initialise.

[tight phoenix]

Ah yes I came to the same conclusion, s was not a thing, manually replacing it worked

Ill try reverting and adding static to see if it makes a difference

[regal stag]

I'd also be a bit careful with converting mod to fmod as they deal with negative values differently. Might be okay here though.
https://www.cyanilux.com/faq/#glsl-mod

[tight phoenix]

Ooh interesting, thank you for the insight. Going to try to move as much of this shader out of the custom and into nodes now that it does render

[atomic jolt]

Still looking for answers

[grand jolt]

if i wanted to blur everything behind that box, how would i go about doing that?

would it be possible by adding a shadergraph material to that

but how would i get the display texture behind the material to blur it

[amber saffron]

Like it was already answered :

You are replacing the position instead of offsetting it.

[amber saffron]

You can use a transparent unlit shadergraph, and the scene depth node to grab the content of the screen.
However : it doesn't support LOD on URP, so no easy blur, and you will have to do a blur yourself, like a simple box blur.
And it will not do it only for what is behind the box, but "everything that is on screen and was rendered before" => all the opaque objects

[grand jolt]

what about the UI, would it blur that too?

[atomic jolt]

Yes, that does explain why it’s happening, but I don’t know how to fix it

[amber saffron]

Offset, do not replace :

• You are setting the Z position, instead of adding the wave motion value to the current one
• insert an ADD node between combine and multiply, other input is SPLIT.z

[amber saffron]

If UI is drawn as "ScreenSpace - Overlay", no

[grand jolt]

it's world space

can i have multiple canvases?

yesss

i can

[harsh plume]

hello everyone! i created a basic room in blender with shaders and all and im wondering how do I carry it to unity? When I use the fbx file it dosent really carry over with the shaders. Im new to 3d 😅

[amber saffron]

Yes

[grand jolt]

noo but i want my post processing to happen on there too

[atomic jolt]

Thank you! I’ll try this when I get home!

[amber saffron]

Unity can't import blender shader nodes, you will have either to :

• re-create the same node setup in unity with shadergraph / amplify
• Bake the textures to "regular" blender materials with UV mapping

[grand jolt]

oof

hmm

[amber saffron]

Then world space canvas is ok, but all the sprites there would need to be rendered as opaque (with cutoff), they are rendered as transparent by default, and I'm not sure it is possible to change it without using a custom sprite/UI shader

[harsh plume]

that makes sense, are the nodes similar to blender or would I have to learn some stuff?

[grand jolt]

they are

somewhat

[grand jolt]

but what about the blur then

if it's opaque

[harsh plume]

i see

[midnight lily]

Is there a point to explicitly avoid using "if" in shaders?
Sure the if only ever helps if all cores are in the same branch, but that at least has a chance of happening, meanwhile a massive piece of code that at the end enables/disables it with a 'lerp' sounds much worse than simply using "if"

Am I just wrong about how it works?

[grand jolt]

probabbly not

but it can decrease performance and efficiency

[grand jolt]

lerping is generally faster

[urban sand]

Guys I am fascinated by this fracture shader, I want to replicate it but I need some keywords, can anyone help?
https://youtu.be/iYrAevFK8sE?t=7945

I know the fundamentals of vert and frag shader

[regal stag]

There's a lot of misinformation and they aren't that bad, especially if it's a property that won't change per-pixel. Also, using an if doesn't even mean it'll branch - the compiler is pretty clever about it, but you can also specify [branch] or [flatten] to try to force either. Can always try both and profile, see what performs better.

Also do need to be careful when sampling textures. This article mentions using LOD or GRAD versions : https://medium.com/@jasonbooth_86226/branching-on-a-gpu-18bfc83694f2

[regal stag]

Can look into "Pivot Baking". I also did a similar effect + breakdown recently (but "strength" is inverted compared to that video, can use One Minus or swap edge inputs on Smoothstep)
https://www.cyanilux.com/tutorials/fractured-cube-breakdown/

[urban sand]

I will go through this thank you

[grand jolt]

is it possible to get the colors of the screen behind the object i have the shader on?

[regal stag]

Assuming the shader is set to Transparent and the Opaque Texture is enabled on the URP asset, can use that Scene Color node

It'll only contain opaque geometry that is though

If you need to grab the screen at a different point in URP, can use a feature to blit the screen to your own render texture.
e.g. https://github.com/Cyanilux/URP_BlitRenderFeature (source : camera, destination : texture ID. Can then sample in shader/graph using Texture2D property with reference set to that texture ID.
(But then you need to render your shader/object with the RenderObjects feature to force it to occur after that blit)

If you're using Built-in target / render pipeline... not sure. Can probably do something similar using Graphics.Blit. Or code a shader manually and use GrabPass.

[grand jolt]

I am using URP, what is a Texture ID?

i already have used the blit feature to do some post processing

[regal stag]

Just a random string basically. It'll be the same reference you want to get the texture later

[grand jolt]

hmm

[regal stag]

As a global Texture2D that is. In shader graph would need to untick "exposed" on the property

[grand jolt]

I have this

and this

but

[regal stag]

Change the graph to be unlit and use _MainTex instead

[grand jolt]

that shadergraph

is from another normal material

it's not the same material that's being blit

[regal stag]

Oh okay, but the Passthrough material is using one with _MainTex?

[grand jolt]

um

what?

oh

[regal stag]

The Blit Material on the feature

[grand jolt]

yeah that is just a generic material because i didn't know what to put there

[grand jolt]

and it was giving me warnings if i left it empty

[regal stag]

It needs to be a unlit material that samples _MainTex and just outputs it. It's there because the feature can also apply shaders for image effects / post processing, but in this case you probably just want to copy the texture as-is

[grand jolt]

oh

i mean if i do this

[tight phoenix]

How do I set a custom shader to additive or multiply, blend modes that something like URP/Particles/Unlit has?

[grand jolt]

it just renders normally

[tight phoenix]

Ah okay found it in here

my shader was opaque that is why I couldnt find it, needed to be transparent

[grand jolt]

okay, i've setup the passthrough material

this is extremely odd

the material

displays the preview icon for the selected material in my assets folder???!!!

wow this is strange

only seems to happen for textures

[regal stag]

Yeah that's a bit odd. I guess the feature is running in previews too, not really intentional.

[grand jolt]

it seems to be affected by my mouse cursor position, selected file and a bunch of random things, without the game running

this is the shader for the square

it feels like it's reading memory that it shouldn't be

[regal stag]

I haven't had this problem before, but may need to add if(renderingData.cameraData.cameraType == CameraType.Preview) return; into the Execute method in the Blit.cs script

[grand jolt]

okay

[grand jolt]

i just realised you made this 😱 that's so cool!!

the extra line did not do anything

Ahhh

it was because i had the material on a UI element, i changed it to a sprite renderer

[grand jolt]

it seems to be flickering though

[regal stag]

It looks like it's rendering to itself which isn't really good. You need to make sure that quad gets rendered after the blit occurs rather than before

Should be able to do that using the RenderObjects feature.
Can put the quad/sprite on a layer, remove that layer from the Transparent Layer Mask at the top of the Universal Renderer asset, and add a RenderObjects feature filtered to that layer with Event set to something after whatever event is on the blit one

[grand jolt]

it seems to not be working

Is this wrong?

(nothing has changed)

[grand jolt]

the flickering doesn't happen in play mode

i missed this part "remove that layer from the Transparent Layer Mask at the top of the Universal Renderer asset"

i can't find it

[regal stag]

The asset is the same thing you add the render features to

[grand jolt]

yes i know that but

i just cannot find the "Transparent Layer Mask"

I'm running 2D renderer

with URP and unity 2021

[regal stag]

I guess it doesn't have it. I'm not sure how to set it up for the 2D Renderer, might not be possible 🤷

[grand jolt]

hmm would using multiple renderers be possible?

[regal stag]

Not sure. Probably not recommended though. But maybe using camera stacking with 2 x 2D Renderers would work? Have the first one handle the blit, and a second empty one. Use culling mask on cameras to only render the quad on the second one. Not really sure

[grand jolt]

i see what you mean

You know, surely it cannot be that hard to blur a part of the screen

can it?

[grand jolt]

(it can)

[simple violet]

the beauty of the scriptable render pipeline :)

[grand jolt]

😭

[grand jolt]

unity is hard

for me

[rare wren]

The first will be easier on the GPU, but potentially more CPU heavy if you use that for rotation.
The static version in the screenshot will look a LOT better however. Especially if you stand above it it won't flatten out

https://danielilett.com/2022-12-05-tut6-2-six-grass-techniques/
https://www.youtube.com/playlist?list=PLUKV95Q13e_U7nZFPIpiG9-z_3BdWcCOA

Some good sources

[regal stag]

The point is that "object space" doesn't really exist if batching is combining meshes

But I imagine billboarding is still possible if you use GPU instancing

[harsh plume]

i created this water color shader in blender which gives my models a water colorish look, would i be able to do something similar in unity? If yes , would someone help me with the process 😅

[fallow crystal]

how can i make shader, that will gradient my text from left to right infinitely?

https://youtu.be/44EN-q65zI0?t=232

something like that in 3:52

im using text mesh pro as my text

[rare wren]

Yep, lerp the color based on the position and use time with sine waves to repeat it
Not sure how it integrates with text

[fallow crystal]

i just dont understand how can i put it like on that text

because i can't see anywhere a slot for a material on text mesh pro

@rare wren

[rare wren]

You can change the shader on the text asset. Probably need to add alpha clipping so it looks sharp.
Googling 'unity text shader graph' also helps probably. You could also look into the tmpro shaders and/or having the text as texture with a custom shader on it

[fallow crystal]

but that'll change the shader for that material

and im using this material for many texts

and just want the gradient on this particular one

and disable the shader conditionally

i can just copy the material ig

[rare wren]

Then duplicate the text asset?

[rare wren]

Yep

Not possible otherwise

[fallow crystal]

i need further explanation as im just starting with shaders :/
so i've created an unlit urp shader graph @rare wren

assigned it to the material, and assigned the material to the text

and this is the outcome

this is my graph, did not just but reduced the alpha to 50%

i just want to be able to see this text with my custom shader, then i'll figure it out how to make a scrolling gradient

this is probably not that easy with a text :/

[grizzled bolt]

Not very easy as there doesn't seem to be documentation for it
You'd have to use the exact same properties in your SG as TMP does in their shader, and replicate the font rendering features you need in it too

[fallow crystal]

is there any work around such as making like an Image over that texxt

with some alpha

or just an image with that text instead of the text

that gradients, would be easier i think? @grizzled bolt

[grizzled bolt]

Sure yes, if you have your text stored as a simple texture you won't need to worry about any of that

[fallow crystal]

i just realized that might not work

as i have localizations in my game (translations)

so will need each image for each language and enable them based on the language

there must be a simplier way just to put the gradient on the text

and make it scroll horionztally lol

[grizzled bolt]

From what I hear the Localization package handles any kind of asset
Whether it saves you effort or not to make a custom TMP shader will depend on how difficult that turns out to be

Maybe all it requires might be to find the font texture reference
I'd google around for examples in case there's some

[fallow crystal]

okay so this is what i managed to do

im trying to do that on a Image

and it seems to work but in game it looks like this

tho this little visible piece is blending fine

now questions, how can i make the gradient scroll horizontally instead of gradienting the whole image

[grizzled bolt]

There's probably many tutorials for that

[fallow crystal]

there none i could find

[distant dirge]

are you using urp or hdrp?

[harsh plume]

Urp

[distant dirge]

alright you should just be able to create a shadergraph that does the same thing as your blender shader

[harsh plume]

oh okay I'm not at home right now would you mind guiding me how to do it when I'm back home

if you're okay with that , that is

[distant dirge]

well the nodes are fairly similar

probably not the same names always but it should be easy to figure out if you know what they do in blender

[harsh plume]

alright i will try it , thank you

[distant dirge]

also, if you cant figure something out, you can ask about a specific part of your shader and how to convert it

[harsh plume]

alright , thanks for the help . I will let you know if i face any issues 😀

[grizzled bolt]

There's no equivalent in Unity for "shader to RGB"

But the rest of it should be okay

[distant dirge]

what does that one do though

[grizzled bolt]

Sums up the shading result to a color output, for example to make a toon shader that includes all incoming light

[fallow crystal]

anyone can link a tutorial for horizontal scrolling gradient shader on an image

literally there is none

how can i make this edge to blend aswell instead of being that roughly cutted color

[fallow crystal]

why does my texture look like this

it looks like this in .png file

[final flint]

In blender i have baked the material map, and I want to import the model with the texture to unity, I have downloaded the unity graph editor and done this. My question is how to allign the objects uv map to unity. Bc, as you can se the UV - alligment is wrong(the third pic),Thanks!

[amber saffron]

Does the object in blender look good with the baked texture applied ?

[final flint]

Ooh, apparently not, you have any clue why?

[amber saffron]

Do you maybe need to input the UV coordinates to the node here ?
Does the object UVs match what you have in the baked map ?

[vague pilot]

hey i made a triplanar shader for my terrain at least i tried - is it possible to add the material with the shader on the terrain?

[amber saffron]

Yep, assign to a material, and assign the material to the terrain in the terrain settings

[vague pilot]

thanks#

[final flint]

wierd, that it's not working

[tight phoenix]

what is the formula to make two values relative to eachother?
R increases the radius, Add also increases the radius but also makes it more rounded
I want to control the roundedness without increasing its radius, but every combination of two floats and math hasnt given me that result

I know logically that radius must strink when Add increases to offset the grown size, but I havent been able to make that work

[amber saffron]

Multiple UV maps ?

[regal stag]

Previews show the raw RGB data without transparency. Colours are typically stretched out like that in fully transparent areas to avoid artifacts. If you use the A output that's usually not a problem.

[amber saffron]

Shouldn't it be something like ? :
d =>
r = 1+d
add B input = 1-d

[tight phoenix]

Getting close, the only part of this that bugs me is that the effect gets more rounded when adjusting the size, trying your formula now

[regal stag]

Use the UV node, split take X. Add Time. If you want the gradient to repeat smoothly, use a Sine or Triangle Wave node. Can then apply colour with a Lerp, or Sample Gradient/Texture2D

[fallow crystal]

i did it like this and it seems to work just fine

thank you tho i will try your approach aswell

[amber saffron]

@tight phoenix
Or maybe to have more clear variables, if you want to have a rounded hexagon (what I seem to understand ?) :
Inputs : final radius & roundness
r = final radius - roundness
then subtract roundness from the SDF result

[final flint]

I fixed it now the uv map is correct in blender, but the uv map still look likes this in unity -

[tight phoenix]

got there 👀 this arangement lets me control radius without affecting roundness, and roundness without increasing radius

[amber saffron]

@tight phoenix If you feel adventurous, you can take the code from the rounded polygon node : Under the hood it is doing a sort of SDF, but you can control the % of chamfer for each edge

[final flint]

I' am an idiot, it's was a really dumb problem, I fixed it, but thank you very much anyway

[grand jolt]

so i have this "broken glass" effect, although it doesn't look very convincing that it's broken glass, do you guys have any suggestions?

[lunar valley]

i think the biggest problem is that I don't see any glass, if what you want to create is a broken glass

[grand jolt]

well i mean like a screen effect

like the refraction of a broken screen

like this

but with refraction

anyways nevermind that but

i have this set to foreground, so Background, Default and Foreground are rendered to _CameraSortingLayersTexture

these are my sorting layers

i have this sprite on the layer which isn't supposed to be rendered to _CameraSortingLayersTexture

i have _CameraSortingLayersTexture property in my shadergraph for BlurMaterial

and i am simply rendering it back into the sprite

the sprite is gray

I've never been so stuck

nvm i have but it's still hard

what am i doing wrong

I just changed the shader for the blur to be Sprite Lit now it is rendered as black

[cunning glacier]

I'm having problems reading from StructuredBuffer in my shader

I set up one and gave it an array without a problem, when reading from it and trying to output to screen its information i get a black screen even though the array it's not a vector of 0

i made an example of what my code looks like for the part i'm having problems with

C# code

`private ComputeBuffer buffer;

void Start(){
Vector4[] colors = new Vector4[length];
colors[0] = new Vector4(1.0f, 0.0f, 0.0f, 1.0f);
buffer = new ComputeBuffer(length, sizeOf(float) * 4);
buffer.SetData(colors);
shaderMaterial.SetBuffer("colors", colors);
}`

Shader code

`StructuredBuffer<float4> colors;

fixed4 frag(v2f i) : SV_Target{
return colors[0];
}`

[tight phoenix]

I am having some difficulty with blend modes, I am working on a shoreline shader but I'm getting unwanted behaviour when things approach each other.
What I would like to see is blending similar to Minimum or Maximum, but I can only select Alpha, Additive, PreMultiply, and Multiply.

Is there a method to have it blend differently? I tried asking GPT but it had no clue, google the same

in a handwritten shader you'd do stuff like 'Blend DstColor OneMinusSrcAlpha' but I cant seem to find the equivalent

the xy end goal sollution I am seeking is for the black mask to exist around each object, exactly perfectly, without any kind of build up like its doing in the above - equivalent of minimum (or maximum?) blend mode

[grand jolt]

i needed to add this:

what the heck

it works now

[tight phoenix]

so far all four blend modes display this screwy blending when near eachother

I need a sollution that allows them to be adjacent without this occuring

[dapper pollen]

i have a shader for a FullScreenPassRendererFeature. the core of it is

float4 _BlitTexture_TexelSize;
half4 frag (Varyings input) : SV_Target {
    UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
    half4 tex  =  SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_BlitTexture, input.texcoord);
    return tex;    }

but its outputs grey? I can see in the frame debugger that the actual _BlitTexture shows the actual scene

full shader is here, nothing too special - https://pastebin.com/fU95q8Qc

[tight phoenix]

I didn't solve my problem, a series of extremely ugly hacks that are barely half working, extremely inferior useless sollution, but this at least shows what im trying to achieve

How do I do the above, except not hideously ugly?

The 'real' sollution is to somehow give the shader a 'minimum' or 'maximum' blend mode

https://docs.unity3d.com/Manual/SL-Blend.html
how do I do these in shadergraph?

Do I have to compile and show code and somehow edit that?

[vague pilot]

hi i made this simple shader for texturing my terrain (im new to shaders) and applied it on the terrain is it still possible to draw textures on the terrain for creating paths etc. or how would you do that?

[tight phoenix]

not jagged but not precise either

still working on it

xy im still trying to solve the above, how can I in shader precisely control a gradient of values into a very specific curve?

I know 'power' changes the curve, but Im struggling to visualize what the resulting gradient currentlky looks like

I got the values to be tight enough I guess, end sollution was judicial use of power, multiply, and extremely faint gradients

https://cdn.discordapp.com/attachments/996979168304697384/1094041773870948422/neato2.gif

[meager pelican]

Did you try debugging with the frame debugger and/or PIX? Or RenderDoc might help too.
Something that lets you look at the buffer contents. Not sure off top of my head what ones of those will let you dump the buffer, since you're after the 1st element (red, opaque).

I can't verify your code fragment, and I don't know where you set the variable "shaderMaterial". Makes sure "length" isn't zero too. Perhaps you want sharedMaterial not Material in the reference from the renderer if that's how you set it.

[amber tide]

hi guys, not sure where to go with this - Unity game screen is pitch black only when a plane (with shadergraph) is visible from the camera's POV. Do you know why this might happen? It seems to work as intended in Scene view

[grand jolt]

that looks very nice :D

is that metaballs?

[grand jolt]

either a texture is missing or lighting

could be a shader outputting blank

[amber tide]

thank you, is there anywhere I could see an error that's not in console?

[grand jolt]

not sure if you can see errors for that kind of stuff

[grand jolt]

also maybe something is not transparent or is transparent

[amber tide]

thanks I'll retrace my steps

[deft frost]

How do I do an extra pass that just adds a masked texture on top of a previous Surface Shader pass?

[grand jolt]

aren't there meant to be two outputs for this??

i am extremely confused with this branch node

[deft frost]

Pseudocode

"Use Pass: DrawEyeWhites"

surf ()  {

  texture irisTexture;
  texture opacityTexture;

  irisTexture.alpha = opacityTexture.a;

  o.Albedo = irisTexture;

}

How do I get something like this working?