archived-shaders

[swift loom]

i'm combining color samples for multiple colors at different opacity levels

                                    {
                                        
                                        fixed4 tempRGBA;
                                        fixed tempA;
                                        tempBlending = fixed4(0,0,0,1);

                                        tempRGBA = _BuildingColorValues[0];
                                        tempBlending = fixed4(tempRGBA.rgb,tempRGBA.a);

                                        [loop]for(uint g = 1; g <= CurrentBuildingIndex; g++)
                                        {
                                            tempRGBA = fixed4(_BuildingColorValues[g].rgb, _BuildingColorValues[g].a);
                                            tempBlending = fixed4(
                                                    (( tempRGBA.a) * tempRGBA.rgb) + (tempBlending.rgb * (1-tempRGBA.a)), 
                                                    tempBlending.a +((1-tempBlending.a)*tempRGBA.a)
                                                );
                                        }
                                    }
                                    
                                        c.rgb = (c.rgb - ((tempBlending.a)*c.rgb)) + (tempBlending.a*tempBlending.rgb);
                                    }

it looks something like that to combine it

well kinda messed up paste but

maybe i could try combining on the fly when i find the color

[amber saffron]

I was going to suggest that.

Not easy to read on discord, but this looks like accumulation raymarching ?

Sort of

[swift loom]

not sure what that means, or the specific ray terms, but i'm iterating through a texture and reading data to see if there's for example a transparent wall that i need to combine with a transparent wall above before drawing

and also how transparent it should be

[amber saffron]

I think we are talking of the same thing, but I'm not sure about that "wall" explanation when talking of texels in a 3D texture 😅

[swift loom]

each pixel in the 3d texture is a tile basically. the game is 2D but the world consists of "3D" tile placement

[amber saffron]

Ok, got it

Are you "looking" this 3D texture in perspective or ortho view ?

[swift loom]

standing behind a mock building here, it's orthographic

standing inside

[amber saffron]

What I was going to suggest, is that if you are always sampling this 3D texture in the same axis, you could store the accumulated result in a 2D texture once, and then forget

[swift loom]

yea maybe. i'll try this because the array has to go anyway.

thanks

[spark spade]

When i try to change the texture it wont let plz help me

[graceful bluff]

has people see this IDE?

https://shadered.org/

it's supposed to allow debugging

interesting

[olive hinge]

I am messing around with a shader custom function that will limit how bright a material can get, and im confused why point lights have this weird directional cutoff when they are close to an object, here is the function for calculating the light color for additional lights (in this case, there is only a single additional point light) ```float3 CustomLightHandlingAdditional(CustomLightingData d, Light light)
{
float3 radiance = min(light.color, 4) * min(light.distanceAttenuation * light.shadowAttenuation, 0.75);

float diffuse = saturate(dot(d.normalWS, light.direction));

float3 color = d.albedo * radiance * diffuse;

return color;

}```

[amber saffron]

1. Materials imported with the mesh can't be edited, you need to extract them (in the model importer) or create new ones
2. Please use proper screenshots and not screen photos :/

[amber saffron]

Some issue in the light calculation ? I think the error is around here : float diffuse = saturate(dot(d.normalWS, light.direction));

Where does light.direction come from ?

[olive hinge]

Entry node function: ```
void CalculateCustomLighting_float(float3 Albedo,
float3 Normal, float3 ViewDirection, float3 Position,
out float3 Color)
{

CustomLightingData d;
d.normalWS = Normal;
d.albedo = Albedo;
d.positionWS = Position;
d.viewDirectionWS = ViewDirection;

float4 positionCS = TransformWorldToHClip(Position);

#if SHADOWS_SCREEN
d.shadowCoord = ComputeScreenPos(positionCS);
#else
d.shadowCoord = TransformWorldToShadowCoord(Position);
#endif
#endif

Color = CalculateCustomLighting(d);

}```

and then where it loops over additional lights: ```float3 CalculateCustomLighting(CustomLightingData d)
{
float3 color = 0;
// Get the main light. Located in URP/ShaderLibrary/Lighting.hlsl
#ifdef UNIVERSAL_LIGHTING_INCLUDED
Light mainLight = GetMainLight(d.shadowCoord, d.positionWS, 1);

// Shade the main light
color += CustomLightHandling(d, mainLight);

#ifdef _ADDITIONAL_LIGHTS
    // Shade additional cone and point lights. Functions in URP/ShaderLibrary/Lighting.hlsl
    uint numAdditionalLights = GetAdditionalLightsCount();
    for (uint lightI = 0; lightI < numAdditionalLights; lightI++) {
        Light light = GetAdditionalLight(lightI, d.positionWS, 1);
        color += CustomLightHandlingAdditional(d, light);
    }
#endif

#endif
return color;
}```

[amber saffron]

Erm, yes, should be correct then 🤔
Tried to indentify if the issue comes more from the diffuse or the radiance ?

[olive hinge]

i think its the diffuse

i also tried a spot light and that seemed to work without issue

actually maybe not, ill keep messing with it

[astral yew]

Ive got this map of provinces, and i am trying to figure out how to outline them with a texture. Just outlining is simple, but since i plan to outline with a texture i need to be able to discern which direction the border is going etc, and im really not sure where to begin. Any guidance would be appreciated thanks

[amber saffron]

I think the only way is to do (a lot of) computation to place like UVed quad lines along your border. I can't think of other proper way to do it

[astral yew]

Thanks, I think i see. By quad, do you mean the mesh, then changing the uv so when applying the outline texture it is all positioned correctly?

[gritty turtle]

I'm using a shader that distorts the background and uses stencil buffer to show the red rectangle, but I want to distort the stencil buffer too, is there a way to do that?

[swift oak]

Is it possible to have multiple shaders for one material?
Or must i brute force any and all shader effects that a character has into one shader ?

[graceful bluff]

you can have multiple materials in a mesh, but I think that is discouraged

[amber saffron]

Yes. Think of the line renderer

[amber saffron]

No

[amber saffron]

Maybe you could discord the stencils buffer in a separate pass using command buffers and compute shader ... Never tried it though

[amber saffron]

@swift oak No really discouraged. It kind of a common practice

[swift oak]

Ty for the response ❤️

[swift oak]

Ty for response ❤️

And another question. Sorry 😦

Im following the shield brackeys shader graph tut in urp.
My only problem is my fresnel has no gradient 😦

Ah Found it. Had to manually add alpha clip threshold to the fragment part of the shader

[olive hinge]

how can I view the source code of Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl? is this cached within the project or in the unity installation folder?

nvm just found it here https://github.com/Unity-Technologies/Graphics/blob/master/Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl

[rough haven]

can someone explain what it means to be projected onto pixels

[brazen locust]

Anyone have an idea as to why my sprites aren't scaling propery when using position node (absolute world) and scaling them by the object scale node

[kind juniper]

It's the same projecting as in projecting a vector on a plane. In This case they're talking about projecting the rendered triangle pixels(and eventually the texture that is drawn on it) into the screen plane.

For example if you have a 13x13 worth of texture pixels in a 4x4 screen pixels. Filter mode determines how to map this 13 x 13 pixels into the smaller space of the screen.

[rough haven]

gotcha, so its talking about mapping texture pixels onto actual screen pixels

[kind juniper]

Yes. It involves projection, because the polygon might be skewed or rotated relative to the screen plane.

[rough haven]

thanks

[full zephyr]

is there a way to skip a pass when its stencil test fail without discarding the pixel?

or would i have to create another shader

ah wait it has to be a different lightmode tag no?

[full zephyr]

now working with different lightmode tags

[twilit elbow]

Has shader graph a node that checks a textures values and sets the min value to 0 and the max value to 1 and stretches all others according to that?

In substance designer that node is called auto level

[full zephyr]

remap?

you can write a compute shader to check for min/max and put that into remap

[twilit elbow]

i feel like remap already helps. Thanks

[civic lantern]

Anyone know a way to fake this sort of colorful reflection effect on camera lens/optics?

[full zephyr]

screenspace? downsample the opaque texture and map it onto the lens

reflections... i have no idea, maybe reflection probes or in hdrp there's raytraced reflections

[civic lantern]

I would probably get the reflections from a cubemap/reflection probe, but I would like to bend the colors in a "realistic" way

I don't know the name of this phenomenom

[full zephyr]

iridescence

[civic lantern]

Thats definitely it, thanks

[hallow plover]

is there any good syntax highlighting options for writing hlsl shaders in unity. I have tried some extensions but they only work ni hlsl files and not in .shader files.

[swift loom]

@hallow plover did you try this

https://marketplace.visualstudio.com/items?itemName=TimGJones.HLSLToolsforVisualStudio

[hallow plover]

yeah. Can't get it to work in .shader files

[swift loom]

I think I got it to work but can't check rn

But it's still fairly limited

Try this. @hallow plover https://forum.unity.com/threads/setting-up-vs-vscode-to-work-with-hlsl-and-shader.1032145/

There's a thing to add .shader inside vs

[hallow plover]

ooh

thank you. I will check it out right now

[echo flare]

I'm creating a custom GUI element inheriting from Graphic class which comes with a material property. But this actually returns the sharedMaterial. There will be a lot of these elements on the screen so should I clone the material or use property blocks?

[swift loom]

I would use prop blocks before instantiating

[rough haven]

Unity uses Direct3D as the graphics API right

so when you use URP or mess with the graphics pipeline in Unity are you changing Direct3D

[full zephyr]

unity has multiple graphics backends

dx11, dx12 (and d3d11, d3d12 subsequently), opengl, vulkan, webgl(and opengles in general)

[hallow plover]

hey. I get an undeclared undentifier error when trying to sample a texture. I am using the SAMPLER macro to get a texture sampler. When trying to sample the texture in the fragment function I get the error. The fragment and vertex functions are in a different hlsl file which I include in my main pass. When I move the code from its own hlsl file to the .shader file it somehow works. Anyone know why it seems to ignore the macro when I try to use it in a separate hlsl file? (Yes I have tried putting in both in the hlsl file and the hlslnclude block in the .shader file)

[kind juniper]

You're not "changing" Direct3D. You're changing unity graphics settings that in turn affect how and what kind of graphics API is called.

[kind juniper]

IRC, the Sampler macro is name sensitive. It needs to have specific name related to your Texture name. I'd assume that both the texture and the sampler declaration also need to be in the same file.

[hallow plover]

the name should match up. Currently the sampler declaration is in the hlsl include block. Putting stuff there under the c buffer should make it work on an included file. At least it worked for other properties

[kind juniper]

Why not put both of them in the same file?

[hallow plover]

idk. I am following a tutorial and he put the main pass inside a different hlsl file. So I did the same

[kind juniper]

Maybe share some code. I've no clue what kind of setup you have.

As well as the tutorial link.

[hallow plover]

ah yes of course. I should have probably done that from the start

here is the code
here is a link to the tutorial I was following: https://youtu.be/KVWsAL37NGw
(note: I did some slight modifications to get it compatible with the srb batcher)

[kind juniper]

Also, share the error.
I'm not sure I'll be able to help, as I'm going to sleep already,but that info might help someone else to help you.

[hallow plover]

error here

[kind juniper]

Aight. It was simple enough for me to see the issue right away.😅
You have a typo. Read the error carefully.

[swift loom]

Accidental lower case the bane of shader coding

[hallow plover]

oh no way. I was checking for typos so many times. I missed the type at least 5 times... Well thanks for the help :)

[rough haven]

I see thank you

[astral pecan]

Anyone know how to create distance triangle from UV like this?

[karmic hatch]

You can do max(dot(vector1, UV)-offset1, max(dot(vector2, UV)-offset2, dot(vector3, UV)-offset3)), where vector1,2,3 are 2D vectors and offset1,2,3 are floats.
(this creates three planes, and does the maximum distance to each)

(though ig it won't work well outside the triangle since the planes extend but the triangle doesn't)

Inigo Quilez probably has a triangle, and definitely has a cone, in his grand list of distance functions.

[vestal bolt]

Hi guys! I have a custom shader that mixes 2 textures using noise effect, can i use 2 smooth inputs here? I need one smooth input for bricks for example and no smooth for 2nd texture (moss). As you can see i add smoothness to final result but i need split it somehow

[karmic hatch]

You can use the color mask to lerp between two different smoothness values

[vestal bolt]

now i have only 1 smoothness value

you mean do add another one than color mask and than input to smoothness?

[karmic hatch]

ye you have two going into the lerp along with the mask, and then depending on the value of the mask it picks which smoothness value to use, and you put that into the fragment node

[vestal bolt]

color mask put into T(1)?

[karmic hatch]

yes

[vestal bolt]

does it switch between two values or i can use it simultaneously?

[karmic hatch]

If the T value is ~0, it returns the A value, and if T is ~1, it returns the B value. So you can't use two different smoothnesses at once on the same place* but you can control which you use depending on other things.
*You can, if you set up the lighting yourself

[vestal bolt]

yes i need smoothness only on base texture and do not need on spots that are added to base texture. So it is not possible

Thank you!

[karmic hatch]

you can set the smoothness to 0 where you don't want it to be smooth

[vestal bolt]

yes but 2 textures are mixed on the same material on 1 object

[karmic hatch]

A single fragment can't have two smoothnesses at once but a material can

you just need to hand the smoothness output in the fragment shader something other than a constant

[vestal bolt]

what is fragment?

[karmic hatch]

fragment is roughly equivalent to pixel

e.g. if you give the smoothness output the color mask, it will be very shiny on the bricks and not shiny at all on the moss

[vestal bolt]

ok ill think about it thanks!

[vestal bolt]

yep i did it, thank you)

[astral pecan]

ig I'll try figure something out :c

[small hearth]

anyone know how to make the alpha channel of an sRGB texture automatically get converted to linear when sampled in shader? For some reason only the rgb channels are (project's in linear). And color conversion node only takes rgb instead of rgba. Do I just have to manually convert alpha channels to linear for every shader where i need to use alpha channel for linear calcs? That can't be right

[safe kelp]

is it possible to gradient map like this in URP shader graph? Specifically, have 2 color nodes and map that since the gradient node doesn't exist as an exposed variable (like vector2/float/color). Or some way to imitate gradient that can be adjusted on a per material basis

towards the end of the video its explained but its in c# not in shader graph https://www.youtube.com/watch?v=KfphtLRoUB0

[small hearth]

@safe kelp I could be wrong but you can use a 1D texture for the gradient and use the grayscale for the uv.x to sample the texture for the color you want

to get around gradient node not being exposable

[safe kelp]

I can def do that, but i'd rather have it as a node that can be adjusted, like a color sampler with a lerp at least

[small hearth]

it is weird that gradient isn't exposable

[safe kelp]

otherwise i'll have to make custom gradients for every object i want to use gradient mapping, which is like 90% of things

[small hearth]

I feel like it used to be

[safe kelp]

yea its well known that it isn't exposed, which is bafling

online is just pointing to 'vertical gradients on meshes' not actual 'gradient mapping'

if i could find a modular workaround then I could just adjust on a per material basis which would save on memory/filesize iirc

[small hearth]

only thing i can think of is a custom editor script that makes a C# gradient and then formats it into a Vector4[] to pass to a materialpropertyblock. i think that would work but would be a pain

[safe kelp]

this sorta does it? but im unsure of how to expose sample texture 2d into a bunch of nodes

yea i saw a script that bakes out gradients using a custom tool, but that's the same as doing it in photoshop

[small hearth]

wouldn't it be the same as using the gradient color picker for an exposed gradient

[safe kelp]

may not even be possible to create a fake gradient? it seems like the functionality is unique

i'd imagine a super complex web or a ton of lerps

[small hearth]

yea i mean if you can convert C# gradient to vec4[] then in the shader it's just a lerp of t=grayscale value

oh wait no

yea itd be a sequence of lerps

which would not be fun

[safe kelp]

right, which sounds expensive to have that all exposed...

it sounds like im stuck with the above method

lerps for each time i want to gradient map. I guess thats ok just not ideal. i can probably crush the texture size down since its just colors

[small hearth]

couldn't you actually make a quick script that creates/edits a texture2d from an inspector gradient color picker @safe kelp that way you can do the texture method except the creation of the texture would be identical to just using an exposed gradient without having to use photoshop or image software

[safe kelp]

lol like this video here? https://www.youtube.com/watch?v=K3dPvA2MtTY

Ya, i'll try a variety of things to see what's the most efficient

[small hearth]

oh that seems more of a hassle than i thought

and you'd have to track the texture2d reference

[meager pelican]

That's what I do. And sample the texture with y=0.5 to sample the center, x of course being the gradient value.
It's a script on the object, that makes the texture (very small one) and assigns it to the object's material. That way you can use Unity's gradient editor and just call the evaluate() function for increments of texture width mapped to 0-1 range.

[safe kelp]

Ah gotcha, I'll have to look that up

Hmm, is there a way to access a meshes vertex alpha? Having an issue where the 3dsmax export is alpha'd out but shader graph isn't reading it. i can't quite recall how i made it work again

[meager pelican]

Check the texture's import properties in the editor...make sure it imports the alpha and doesn't use some grey-scale value.

[safe kelp]

er it's not the texture but the mesh that's having the issue, but i'll try your suggestion

[meager pelican]

Oh, sorry.

Yeah, vert colors should come over.
Debug by using grey scales.
Set the output color to the alpha value, using a swizzle node, so you get color.aaa.

I don't have unity running to draw a graph, but I'm sure you get the idea.

[safe kelp]

hmm it must be 3dsmax's fault, i re-imported my mesh and it wiped out the alpha data. the fbx export settings must be off

weird now it works, but yea its 3dsmax causing the issue

[astral pecan]

Thanks for referring to Inigo Quilez, took a peek and learn tons of cool stuff

Now I can make really cool SDFs :)

[ebon basin]

How do I go about using an image renderer's color field to change the alpha of my shader? Is there a specific reference I have to refer to when creating my alpha variable in my graph's blackboard?

[civic lantern]

Looks like it is vertex color:
https://docs.unity3d.com/2018.2/Documentation/ScriptReference/UI.Graphic-color.html

[ebon basin]

Yeah, it's the vertex color which I know I've been able to to change in hlsl, but I'm not seeing the way of doing it in the shader graph. There is a vertex color node, but that only pulls the color from the vertex, and I'm not seeing how to do the input.

[vital yarrow]

for some reason this pink box appears whenever i open the project does anyone know a fix?

[grizzled bolt]

Vertex color is mesh data, so you don't write to it with shaders

At least not directly

[ebon basin]

Ahhh, ok I see. Turns out I just needed the vertex color node and use it 'correctly' by splitting the channels.

almost spent a day reading up on custom interpolators

[sinful ermine]

this noise is behaving so weirdly

[sinful ermine]

check the material maybe

[full zephyr]

that's stretched, either your uv is broken or you need to set the wrap mode to repeat

[sinful ermine]

lemme provide some context
I have a shader using a ready implementation of various noises

i dispatch it like so

then draw the texture

from around here

the button uses the Draw fn

pardon the minecraft font lmao

oh, i think i get it

[full zephyr]

when you create your texture

set the wrap mode

but yeah that should be it

[sinful ermine]

no, not quite

when indexing the result array in the shader i do it one way, but when trying to read from it i do it entirely differently

[full zephyr]

i wonder why you dont pass the buffer directly to the fragment shader

[sinful ermine]

this isnt a fragment shader

its a compute shader

[full zephyr]

you can pass your rwbuffer to a fragment shader

[sinful ermine]

not sure i understand why i would, though, bit of new to this

[full zephyr]

because the overhead between uploading and reading data from gpu to cpu and vice versa is quite slow

*makes it quite slow

also, for 2d noise data you should be using rwtexture2d

and when you do need to use a 1d buffer (not this compute shader) use rwstructuredbuffer, not rwbuffer

[sinful ermine]

ah, so instead of drawing the texture on the cpu draw it on the gpu using a fragment shader

yeah, certainly will make it faster

though i still want to figure it out as this, the whole indexing stuff with 1d arrays

just to gain some understanding

[full zephyr]

you really should use the same dimension of buffer as your kernel

[sinful ermine]

okay, will do

[full zephyr]

yeah, in simple terms it'll be more performant

alright, good luck

[sinful ermine]

thank you

[astral pecan]

How do I assign one of the out variable to a variable in hlsl?

// I want to set out1 as MyFloat
float MyFloat = Test_float(arg1, arg2, out1, out2);

[full zephyr]

out1 = myFloat;

[astral pecan]

Ok I'll try

Ok that works, thanks!

[astral pecan]

https://www.shadertoy.com/view/3tyBzV
What's a dot2?

[karmic hatch]

he defines it at the top as
float dot2( in vec2 v ) { return dot(v,v); }

basically the squared length of the vector

[astral pecan]

Oh I somehow missed that, thanks!

[sinful ermine]

got it to work

thanks again avrdude, will try to adjust it to fragment shaders and such now

[lucid oriole]

why cant I find a universal option?

[swift oak]

https://www.youtube.com/watch?v=SOK3Ias5Nk0

Heyo question for the shader. Is this applied to the screen or all objects at minute 2:24?

I assume the shader is applied to all objects in the scene

[karmic hatch]

It's applied to all the objects with materials using that shader

[swift oak]

Thank you ❤️

[craggy jay]

hello! I'm having a bit of a problem with transparencies at the moment and I'm not sure what's causing it? I've made a shader for a transparent dithered smoke and it sometimes cuts off other smoke meshes at very specific angles?

if i look at it from a different angle, thenit works fine

does anyone know why this is happening?

it can't be z fighting since they're not on the same plane

oh nvm! i just need to disable writing to the depth buffer and it works fine!

[dusty yacht]

how do i get rid of the "undeclared identifier 'unity_LightData'" error?

[lucid oriole]

Can anyone help?

[kind juniper]

Do you have urp installed?

[kind juniper]

Declare it.

[dusty yacht]

if i knew how i wouldnt have asked

[kind juniper]

Well, why is it therein the first place?

[dusty yacht]

i wasnt the one who made the shader

and im pretty sure its supposed to be predeclared by the shader renderer

[lucid oriole]

URP?

[kind juniper]

Universal render pipeline

[lucid oriole]

i guess not

[kind juniper]

From the name it sounds like it's supposed to be declared in a unity include file. Is the shader intended for the render pipeline that you're currently using?

[kind juniper]

Welp, there you go. Install it, set it up, and it should appear.

[lucid oriole]

thanks

[lucid oriole]

oh um

[calm orchid]

Is it normal for a custom HDRP shader graph material to not be affected by reflection probes or light probes by default? And, is there anything I can do to fix it?

[kind juniper]

Something failed during package installation I guess. Could be the one drive fault. You generally shouldn't be using a cloud storage for a development environment.

[lucid oriole]

I am not

oh wait

oh right, onedrive

[kind juniper]

I'd use a shorter path and make sure to avoid possible triggers for bad paths(like exclude whitespaces and non English characters)

[lucid oriole]

uh

why the preview is purple?

[kind juniper]

Incompatible shader.

If you're using the universal rp graph and it's pink, it means that you haven't configured your project to use the urp.

It's still using the built-in rp

[lucid oriole]

well, how do I configure it?

[kind juniper]

You can Google that😛

[lucid oriole]

fair

[kind juniper]

I recommend checking the urp manual.

[lucid oriole]

oh

[kind juniper]

Probably need to create the asset

[lucid oriole]

i know

ugh

[kind juniper]

Standard shaders are incompatible with URP.😬

[lucid oriole]

got it, tysm

is there a way to change the surface in SG in code as well? For example, from transparent to opaque (for individual instances, so a bool would be preferable)

or the only way to do that is to make another shader graph?

[kind juniper]

You can't have a shader both transparent and opaque at the same time, so you'll need a new shader graph, yeah.

[crystal heath]

how do i fix this

[kind juniper]

Or do you mean alpha clipping? Not sure I understand the "individual instances" part.@lucid oriole

[kind juniper]

Make sure your shader graph target is compatible with your render pipeline.

Ask @lucid oriole for details. As he just had the same issue.😬

Or rather read our conversation.

[lucid oriole]

Unfortunetly I'm heading off for sleep atm, so @crystal heath I'll help you out tommorow, aight?

[crystal heath]

Alright good night

[ebon basin]

Ok, so it seems that there's no reference binding to color with the shader graph for the vertex color and you'd just use the Vertex Color Node instead. But, for the main texture, you can give a property field a reference of _MainTex to retrieve it from it and just use that in your graph. Now, I've been trying to my shaders to work with either the fragment or vertex colors/alphas, but I'm not understanding how I would do the conditional logic on the graph to choose between the main tex, or the texture I give to the fragment shader.

The problem is that I've no clue how to use the given boolean + branch nodes on the graph, since textures are of T2 and you can't really reduce that to a zero unlike the colors.

[ebon basin]

nm, actually it's more or less of the same thing but you break the textures down into rgba

for those curious

[grizzled bolt]

You don't need two branches to invert the result of a branch

it doesn't need to be more complex than this to choose between branch results

[ebon basin]

Oh that's clean

But you'd have to have it unassigned on the inspector for that right

oh wait, nm I get it

tyty

[grand jolt]

if i add a cjustom shader how do i use it?

[amber saffron]

Assign it on a material, and assign the material on a mesh ?

[grand jolt]

oh yea

[lucid oriole]

Okay, so do you have Universal Render Pipeline installed?

[zenith gull]

Whats the best way to go about making something like this? Some sort of gradient for the inner colour base but then I need speckles/semi outline of the actual model.

Trying to make it look like fur but more cloudy/dandelions like

this is similar but too graphically intense

[patent plinth]

where can i get a list of all the available keywords in unity3d for the shader in shadergraph?

[mortal oracle]

https://assetstore.unity.com/packages/tools/gui/book-page-curl-pro-77222
any Page Flipping alike shaders like these but for sprites?

[gusty light]

Hi, I am quite new to shaders. I want to use animated textures in shader graph and so far I've used a texture sheet in combination with the filpbook node and it works, but the frame rate could be better.
I heard that you can also use 3D textures as animated textures and that they blend smoothly between the frames. I know how to set them up in Unity but I am wondering how to use them as animated textures in shader graph?

Oh wow, just found out how (using the third dimension of the Vector3 into the UV input to scroll through the texture)

[crystal heath]

i was able to fix it, thanks though

[lucid oriole]

yw

[swift oak]

In the tutorial im watching the guy has code that makes the frustum a box. But the problem this code causes all my shadows to flicker.
Here is the code :

public class FixFrust : MonoBehaviour
{
    #region Constants
    private const string BENDING_FEATURE = "ENABLE_BENDING";
    #endregion


    #region Monobehaviour

    private void Awake()
    {
        if (Application.isPlaying)
        {
            Shader.EnableKeyword(BENDING_FEATURE);
        }
        else
        {
            Shader.DisableKeyword(BENDING_FEATURE);
        }
    }
    private void OnEnable()
    {
       
        RenderPipelineManager.beginCameraRendering += OnBeginCameraRendering;
        RenderPipelineManager.endCameraRendering += OnEndCameraRendering;
    }
    private void OnDisable()
    {
        RenderPipelineManager.beginCameraRendering -= OnBeginCameraRendering;
        RenderPipelineManager.endCameraRendering -= OnEndCameraRendering;
    }
    #endregion

    #region Methods
    private static void OnBeginCameraRendering (ScriptableRenderContext ctx, Camera cam)
    {
        cam.cullingMatrix = Matrix4x4.Ortho(-1000, 1000, -1000, 1000, 0.01f, 5000) * cam.worldToCameraMatrix;
    }

    private static void OnEndCameraRendering(ScriptableRenderContext ctx, Camera cam)
    {
        cam.ResetCullingMatrix();
    }
    #endregion
}

[swift oak]

With regards to this tutorial

[sand ember]

Is it possible to create a palette swap shader, i.e., a shader that accepts three textures, one is the original sprite with the default color scheme, another is the palette which contains the default color scheme, and another which contains the palette to swap into? The default color palette is to be used as a lookup table for the color palette to swap into

[sand ember]

I want to do this in shader graph

[full zephyr]

yes you can

you can set your shadergraph to use sprite lit

and you just need to write a simple compute shader to create new sprite texture which contains the correct indexes for the palette

and in the shader you'll want to sample with the correct uvs

[deft mango]

hey

So what happens if I do

var colors = new Color[1000];
for (int i = 0; i < 1000; i++) { colors[i] = new Color(1, 1, 1, 1 + i % 100); }
someTexture.SetPixels(colors);

namely do the colors get converted to 0-256 range for whatever reasons? or do they get clamped somehow?

[low lichen]

Are you calling someTexture.Apply() at some point after setting the pixels?

[deft mango]

yeah, I'm mostly curious on what reaches the shader

I was trying to pass some more info to the shader via the texture I'm sharing with it

but seems my i % 100 never reaches the shader

[low lichen]

What texture format are you using? Some are normalized and some are not.

[deft mango]

well, RGBA32

or ARGB32 what it's called 😄

[low lichen]

https://docs.unity3d.com/ScriptReference/TextureFormat.RGBA32.html

Each of RGBA color channels is stored as an 8-bit value in [0..1] range. In memory, the channel data is ordered this way: R, G, B, A bytes one after another.

Similar for ARGB32

There's https://docs.unity3d.com/ScriptReference/TextureFormat.RGBAFloat.html for storing unconstrained 32-bit floats

[deft mango]

you're awesome! thanks

[low lichen]

Or RFloat if you only need one float per pixel, like in your example

[deft mango]

hehe yup I actually need the 4 floats 😄 thanks a lot

[tulip carbon]

Could anyone tell me how to actually make something like an afterburner please? Like, what tutorial can I search for?

[karmic hatch]

https://www.youtube.com/watch?v=dAJo3VpLAoI&ab_channel=CGHOW found this, might be useful

(it's for unreal but the methods will be the same)

[tulip carbon]

okay thank you 😄

[karmic hatch]

the exhaust-specific part starts around 9:30

[tulip carbon]

and what is this node in unity please?😅

[karmic hatch]

I think the UV?

[tulip carbon]

this one?

[karmic hatch]

yes

but you need UVs set up on your mesh too

(he is using a custom mesh)

[tulip carbon]

?

oh ok

so like it wouldn't work with a normal cylinder?

[karmic hatch]

If you use it on a sphere or something it'll be fine, just if you use it on something that's non-standard you might need to set up UVs yourself

default cylinder should be fine i think

[tulip carbon]

okay thanks

[karmic hatch]

https://forum.kerbalspaceprogram.com/index.php?/topic/204884-developer-insights-11-–-engine-exhaust-visual-effects/page/4/ this could also be of interest (posts from ksp modders)

[tulip carbon]

thank you 😄

[blissful marlin]

how could I smoothly turn an offset connected to time to a stop, then start it again where it left off?

I tried just multiplying the speed by a time moving to 0 but I realized this actually causes the offset to pan backwards instead of stopping

[digital gust]

Increase a value over time and stop increasing when you want to pause?

[blissful marlin]

I might do that but I was hoping maybe there would be a way to handle that primarily with shadergraph logic (rather than needing to be changed on Update)

[digital gust]

You can with bool and vector 1 flosts

[rare charm]

How do I get a shadergraph to shade flat?

[vocal narwhal]

Choose an Unlit graph when you first create one

Or switch it to Unlit through the Material dropdown in the Graph Inspector

[rare charm]

@vocal narwhal No dice

[vocal narwhal]

what am I looking at?

maybe you need to describe what you mean by "shade flat"

if you want flat-shaded lighting then you're going to have to hook up custom lighting in the form of code. I'm sure there are plenty of shadergraph toon lighting tutorials out there that would have various implementations

[sacred patio]

Hey I guys, I got quite confused with this flopping shader: It works perfectly on an individual object but once I plug it into the particle system, it stopps working. I tried playing around with the position nodes and the closest thing i got was it flopping as a whole object and not split like the one on the left

Does anybody have any ideas?

[grizzled bolt]

Position: Object is the position of the particle system, not individual particles

[sacred patio]

But I assume there's no way to get the position of individual particles? because there's no other combination that I tried works. The closest was the 'view' one which didn't look right as in the second picture

[tawny echo]

Is there someone that can talk in private about a shader with me? Utilizing Cozy 2 and the owner created a shader that is working on there end to cull the fog, but for some reason on my end its doing weird stuff.

[gritty steeple]

So if I don't turn off Shader Stripping, I get some major visual rainbow glitches within my game after building. I tried Unity's Cloud Building and while it did work as expected (it took 24 hours to build...) I am noticing these:

[2022-10-17T05:10:03Z - Unity] Shader 'Universal Render Pipeline/Lit': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found
[2022-10-17T05:10:04Z - Unity] Shader 'Universal Render Pipeline/Lit': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found
[2022-10-17T05:10:07Z - Unity] Shader 'Universal Render Pipeline/Nature/SpeedTree7': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found
[2022-10-17T05:10:09Z - Unity] Shader 'Universal Render Pipeline/Simple Lit': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found
[2022-10-17T05:10:18Z - Unity] Shader 'Universal Render Pipeline/VR/SpatialMapping/Occlusion': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found
[2022-10-17T05:10:22Z - Unity] Shader 'Universal Render Pipeline/Unlit': fallback shader 'Hidden/Universal Render Pipeline/FallbackError' not found

Is there a way to resolve this? I'm wondering if these are related to the shader issues I've been having.

[grizzled bolt]

Yes there is, via something called vertex streams
https://docs.unity3d.com/Manual/PartSysVertexStreams.html

In Shader Graph it'd look something like this

A bit unintuitive because the vertex streams are just arbitrary UV color channels on SG side

Since the UV0 channels R and G are for texture coordinates, UV0 B and A are the first custom vertex stream channels X and Y respectively

Then it starts over from UV1 R, G and so on
Or so I recall

[tawny echo]

Issue: Utilizing cozy which puts in a linear fog.
Owner gave me shader that should cull the fog/changes it makes in that area.
The shader works properly for him (not sure on unity version) We are both on URP and I'm on Unity 2021.3.9f1
First picture below is me using it. Second picture is him using it. Not sure if its a shader issue or a scene issue at this point

Shader used

[peak spear]

Hey guys, where can I find a shader that makes UI elements glow?

[runic pendant]

Is it possible to reference two different sprites from the same atlas in the same Image shader?

It is easy to reference two separate textures in the same shader but it doesn't seem feasible with two sprites that are from the same atlas. Am I missing something?

[storm dove]

I have a 2D mesh I want to use as a mask behind which some sprites will be rendered
How could i achieve that?

I tried some solutions I found on google that used URP but none of them worked

[shadow locust]

sprites aren't really a thing in shader world, it's just two different sections of the same texture. You'd basically just provide the appropriate coordinate offsets & sizes for the sprites, no?

I guess you're asking about the "sprite shader" workflow itself, in which case I think it's really designed around accessing a single sprite, so you'd have to build your own way of accessing another I think, again using offsets & sizes

[runic pendant]

Yea I am just figuring that out rn. So I just have to populate the vertex with the coordinates of the first sprite in uv1 and the second sprite in uv2?

[shadow locust]

that certainly is one way you could do it

[runic pendant]

Seems easy enough

[fervent flare]

Anyone know how I'd find the highest world space vertex of my mesh, in shadergraph ?

I'd like to automate the 'heightblend' value I have going on here

to ensure the blend is always set to the highest position vertex.

[karmic hatch]

afaik, you don't; if you generate the mesh, store it then and give it to the shader or set it to be standardised, and if you don't generate the mesh, go through the mesh vertices on the cpu side. In shaders, each vertex doesn't know about each other vertex, and each triangle doesn't know about each other triangle.

[grizzled bolt]

Afaik the CPU already does that when generating a bounding box for its purposes, so that could be reused here

[fervent flare]

🤔 damn this is above my pay grade

trying to keep the solution within the shader and not add c# to the mix

[karmic hatch]

just create a float3 property inside the shader, then write a script that takes the mesh, extracts the vertices (just mesh.vertices), loops through the array, returns the one with the highest y component, then gives that to the shader through the property

[grizzled bolt]

https://docs.unity3d.com/ScriptReference/Bounds.html all mesh renderers have this, so you could grab the highest point straight from here and pass to an exposed property of the shader

[fervent flare]

Thanks guys, I'll give it a shot!

[lyric copper]

Hey. Are there any resources you guys could point me towards that are similar to the draw feature of Quest Guardian Setup

https://www.youtube.com/watch?v=jxxqi7AdoeQ

It seems like some sort of layered mask situation

[runic pendant]

Alright, I think I hit an obstacle. It seems like the material can't reference the sprite atlas? How do I point to the texture of the sprite atlas

[shadow locust]

https://docs.unity3d.com/ScriptReference/U2D.SpriteAtlas.GetSprite.html
https://docs.unity3d.com/ScriptReference/Sprite-texture.html

[runic pendant]

The texture of a sprite refers to the imported texture, not the sprite atlas

So I can't do Sprite.texture

[runic pendant]

Yea it still doesn't work

[SerializeField] Sprite primarySprite;
[SerializeField] Sprite secondarySprite;
[SerializeField] SpriteAtlas atlas;
protected override void OnEnable() {
base.OnEnable();
if (material.mainTexture == null) {
Debug.Log("main texture is null");
material.mainTexture = primarySprite.texture;
Debug.Log(primarySprite.texture);
Debug.Log(secondarySprite.texture);
Debug.Log(atlas.GetSprite("TravelerCardSDF").texture);
}
}

The "primarySprite" and the GetSprite.texture gives me the same texture

Oh, I figured it out.

[kind juniper]

It's probably packed at build time?🤔

[runic pendant]

"primarySprite.texture" will work only in PlayMode

I was testing my stuff in Editor mode for the past 3 hours

And it wasn't working because of it lol.

In Editor mode it will always return the imported texture, but in PlayMode it will work correctly

[kind juniper]

Oh, I guess it packs at play time as well.

[runic pendant]

Dam, that was frusterating

Thank you PraetorBlue for responding to dumb questions

[shadow locust]

just be careful with this as GetSprite clones and returns a new sprite. You'll want to be careful about creating a bunch of Sprite instances and not cleaning them up.

They need to be Destroy()ed when you're done with them.

[runic pendant]

Yea I stopped calling it

There was no need to call it bc I can just get Sprite.texture during runtime instead

Now i am facing another problem lol

The material seems to be working fine but when I place it on a graphic it just shows white

[kind juniper]

Well, canvas rendering is a whole different beast. You can't just take a random shader and hope that it works the same way with ui.

[runic pendant]

Well I made the shader myself and it works on a Unity Image

[kind juniper]

So you managed to solve the issue?

[runic pendant]

The problem is that it doesn't work on my custom Graphic

[kind juniper]

Hmm

[runic pendant]

It is really weird. If I make the shader just output the vertex color, it works. But if I tell it to sample the texture and output the rgb, it is blank

The Unity Image correctly outputs the vertex color and the texture rgb sample

[kind juniper]

Gotta look at the image implementation then. Must be some function override that you're missing.

[runic pendant]

My guess is that my custom graphic is sampling from a white texture and doesn't even know the texture exists

Sure, one sec

Omg I think I figured it out

In my UpdateMaterial() function I am supposed to call canvasRenderer.SetTexture(primarySprite.texture);

I wasn't calling that before

Gosh this one line after 5 hours lol

I need sleep

I guess the bright side is that I am comfortable working with custom Graphics

[runic pendant]

Bruh looks like garbage

Downgrade from what I used to have lol

[tepid valve]

having some serious issues with a shader
it works in scene view and game view
it also works ingae in another scene ive imported in
but it doesnt work once i go into the game

for reference its a depth texture sorta fade shader thats applied to a plane

first image is scene view
second image is game view
third image is ingame

still happens even if i have depth texture enabled in Camera > Rendering and Depth Texture enabled in the URP Asset

only things on google suggest enabling SMAA which does nothing too

https://stackoverflow.com/questions/73623574/unity-shader-working-in-editor-but-not-in-game
https://forum.unity.com/threads/depth-not-visible-in-game-view.976515/
https://gamedev.stackexchange.com/questions/202137/unity-urp-water-shader-working-in-scene-view-in-the-preview-window-but-all-w
https://stackoverflow.com/questions/71847879/having-troubles-with-unity-camera-depth-texture
https://answers.unity.com/questions/1581009/shader-working-in-scene-mode-but-not-in-game-mode.html

literally all of these have the same issue (i think) - none of the fixes work

oh wow literally spent hours and hours trying to fix it across past 2 days and within 5m of posting it here i fix it

for anyone wondering the issue was that the object was static

apologies for the spam

[indigo bloom]

hi, does shaders work in webgl?

[amber saffron]

Yes

[sacred patio]

I need to tattoo this

[sacred patio]

Since this says particle size y, does it mean that particle size x goes separately too?

[grizzled bolt]

If the first custom vertex stream is position, then position XYZ corresponds to UV0 Blue Alpha + UV1 Red

[sacred patio]

Hm, do you know if VFX graph has the same approach of its own in terms of positions?

[grizzled bolt]

I don't, but since VFX graph supports SG natively I expect the way to hook them up isn't so hacky

[haughty moat]

Hello. I was wondering if the "stride" of textures in shaders was locked to 4*32 bits? If I declare a Texture2D<float>, do I actually save memory (Setting a texture to single channel on the Unity side doesn't save disk space, but that could be in order to be non destructive).

[trail nymph]

Hey, has anyone experienced this?

This is the RGB part of a RGBA picture ran through the Graph Editor Sample Texture 2D

I checked the RGB channels in every other part of the process and they're all right here

almost feels like the Sample Texture 2D fills pixels with random garbage when it can get any info?

I tried changing the Sampler State as well and it did nothing

It messes up my textures when I multiply them like this

[amber saffron]

It's more related to how the texture is imported.
Is it a PNG image as source ? Most of the time, PNG's don't have color information on 100% transparent pixels

[trail nymph]

It is a PNG, what image format should I try using then?

.tif?

[amber saffron]

PNG should still be fine, the question is more about what you want to do with the texture.
What are you doing with the alpha channel ?

You could multiply RGB by alpha, and this will result in transparent pixels beeing black
You could lerp usign the alpha channel, allowing to "ignore" the transparent pixels

[trail nymph]

I multiply multiple RGB channels from different textures
I add up the alphas from the textures, subtract a different texture from them, clamp and output

Ends up working like one big mask for all of the bone textures

[trail nymph]

I'll try doing the multiply thing, one sec

[amber saffron]

If you can show the graph / code, it might be helpfull to understand

[trail nymph]

It's a big graph, should I try sending over the file?

[amber saffron]

Can't screenshot the interesting part ?

Worst case, yes, send it over :/

[trail nymph]

For now only Bone 1 and Bone 2 have proper textures, I filled the others with a texture white in RGB and black in A

[amber saffron]

Okay, so, basically, you want to "stack" the texture samples ?
You could do this in a more tidier way using lerps

[trail nymph]

Yeah essentially

How should I go about it?

[trail nymph]

it combines the alpha channels as well?

[amber saffron]

In that case yes, but if you only use RGB it doesn't really matter, but it helps to keep the graph clean

[trail nymph]

Ah I'll try doing that, tysm

[amber saffron]

If you want to only work on RGB, you can use the swizzle node

[trail nymph]

I still need the combined Alpha, so the lerp method should work

[tender remnant]

I'm struggling a bit with stencils. Anyone here that could help out?

I basically want to set a stencil value when I'm rendering certain objects but it seems to ignore the depth test. Even if the pixel is discarded by the depth test the stencil value still gets applied it seems like. I'm using amplify shader editor but there's nothing extraordinary in the shader output as far as I can tell

[low lichen]

The ZFail parameter will determine what should happen if the pixel fails the depth test. The default is "Keep", which won't modify the stencil buffer, but maybe Amplify has a different default.

[tender remnant]

oh.., actually I think I got it working.., seems to be a special case with the zero value..,

yeah it's odd.., I'm not checking for 0,.., in this case I'm doing something special when the stencil is 12.., setting other objects (that aren't part of this effect) to 1-11 and 13-255 seems to work.., but 0 makes it be ignored or fails somehow

[trail nymph]

Worked like a charm! Massive thanks!

[tender remnant]

no wait.., I spoke to soon.., the 0 being mystically weird behaving is still true but it still doesn't work as intended with the depth.., I think I need to think about what it's doing

I have a bunch of objects being rendered. Some are part of the effect (setting the value to 12) and some aren't (setting the value to 255)

and they all use replace on rendering success and zfail is set to keep

but when I move my camera around (presumably only changing rendering order) the mask will be incorrect. Not aligned with the actual objects I'm seeing being rendered

there's no zsuccess I could use? That's basically what I think I'm missing

Just checked the frame debugger.., it doesn't make sense.., the objects I render that sets the stencil to 12 is being rendered last in the ordet yet objects that are being rendered before are overriding the values

is there a way I can see my stencil values in the frame debugger somehow?

[low lichen]

No, you'll need to use RenderDoc for that

[compact reef]

Hi Guys

I've a Grass sway shader

[tender remnant]

ok, I have a capture set up. Would you know how to make the stencil part more visible? I can click in the screen to see the values but it would be awesome to see it visually
Edit: Think I found the setting

[compact reef]

On that i wanna add movement on player's interaction

please help me out

here it is

[grizzled bolt]

Help how, precisely?

[compact reef]

any help would be useful

just lend me some of your precious time

[low lichen]

I only know of the Stencil Test overlay, which isn't really what you're talking about. If you find some way to visualize all the stencil values, please tell me how because I agree it would be very useful.

[tender remnant]

This one seems to work for me

[low lichen]

Hmm, how does it map the stencil values to colors? 256 shades of grey?

[tender remnant]

Think so.., I only have looked at values precisely at 0 and 255 currently. I'll get back to you

ah.., yeah so you can also control those with the range you see below in the pic

works like a charm!

problem I have originally still persists though. For some reason when it's rendering the objects it only applies my new values if the original stencil value of 0 already is there.., once set to 255 it's ignored

(they should replace them with 12.., and stencil test overlay looks fine as well)

[low lichen]

Hmm, does the Stencil State look good for those draw calls under Pipeline State/OM?

[compact reef]

bump

have u guys found any way out....?👀

[tender remnant]

Maybe you should formulate a specific question? It looked like so far you only asked for time, right?

[compact reef]

cant we add movement property on player's interaction into this shader?

just want my grass get moved when passing through those

🙁 as im just a beginner in shader coding ...so im pretty much stuck into it.

[tender remnant]

you should check a tutorial if you're new then. It's probably a bit more to it than you think currently. And when you get stuck you can get back here with more specific questions and I'm sure people would be happy to help out 🙂

[compact reef]

well, emil, could u please check the shader out in your free time?...i got a tut https://gamedev.center/tutorial-how-to-make-an-interactive-grass-shader-in-unity/ where its about geometry shader ...but mine one is not the geometry shader....

[leaden turret]

Hello again - back for the next episode of Water & Underwater shader adventures 😛

so i'm trying to make the water surface effect when swimming underwater

I tried making an upside down plane with water effect shader (just like the above-surface one) which actually is not bad and i might be satisfied with for now, however i really need it to overtake the whole screen at all times when underwater i.e. not camera clipping at the plane edge... it might need to be a post processing effect rather than a plane?...

[heavy stirrup]

hey guys, I have a custom shader (written in HLSL) that samples the CameraOpaqueTexture

for some reason, it doesnt perform refractions unless I reimport the shader everytime I open my Unity project

after reimport it's perfectly fine

does anyone have experience with this?

I'm on android platform

Unity 2020.3

[white marsh]

what does this mean?

[regal stag]

float4 _BaseMap_ST; is being defined somewhere in the shader, but outside of the "UnityPerMaterial" cbuffer so it's not compatible with the SRP Batcher

[white marsh]

so if i fix it, it'll be compatible with the SRP Batcher?

[regal stag]

Should be yes

[white marsh]

ah ok

should be simple enough

uhm. strange. it is inside and its still saying it

My cbuffer looks like this, and the _BaseMap_ST is defined in DECLARE_SHADOWCASTER_VARIABLES

CBUFFER_START(UnityPerMaterial)

    float4 _MainTex_ST;
    float4 _RampTex_ST;
    float3 _MainColor;
    float4 _MetallicMap_ST;
    float4 _NormalMap_ST;

    float _LightFalloff;
    float _Gloss;

    float4 _ColorRimLight;
    float _RimLightToggle;
    float _RimLightIntensity;

    DECLARE_SHADOWCASTER_VARIABLES

    #if defined(_TOON_CELSHADE) || defined(_TOON_HALFTONE)
        DECLARE_TOON_VARIABLES
        #ifdef _TOON_HALFTONE
        DECLARE_HALFTONE_VARIABLES
        #endif
    #endif
CBUFFER_END

#define DECLARE_SHADOWCASTER_VARIABLES \
    float4 _BaseColor; \
    float4 _BaseMap_ST; \
    float _Cutoff;

could it be that its a problem that its a macro from another include?

still says the same even not using the macro and declaring it normally so then idk

[regal stag]

Not sure. also need to make sure all these DECLARE_X_VARABLES are consistent for each pass though, as it's important all passes in the shader use the same cbuffer to make it compatible

[white marsh]

that could maybe be whats happening then

[white marsh]

ok so ive been looking over it and im including my lighting.hlsl file outside of the passes, in the subshader together with some multi_compile keywords. is that what could be doing it?

[white marsh]

all the DECLARE_X_VARIABLES should be all the same in the different passes. only passes i have is the main pass and a shadow caster pass

[gritty rapids]

What's the good way to make an intensity slider for AmbientOcclusion ?

I always find myself using clamps and stuff, but is there a proper way ?

[devout gazelle]

Hey! Do u know if there is any way of getting PBR channels to work on 2D sprites? I've tried adding metallic and smoothness to the output, but they appear greyed out :/

[grand jolt]

Is there any way i can use CG shaders in the URP pipeline? If not is there a conversion guide from CG -> HLSL?

[white marsh]

if you arent already using range(0, 1) in your property then i dont know what else you could do other than the usual clamp, saturate and etc

_LightIntensity ("Saturation", Range(0,1)) = 0.3 as an example

[shadow jewel]

Hello! Is there a way to create material instances in unity? (similar to how it's done in unreal material)

[white marsh]

If you are talking about using CGPROGRAM/CGEND and HLSLPROGRAM/HLSLEND keywords then they are the same within unity after a certain version. All the cg code from nivida works in hlsl

[white marsh]

As far as i know you can only do so in runtime. Each object with a material on it can have its own material instance of a single material

Though i only know thats is useful if you are changing material properties by script or something

If there is a way to create material instances other than that way id also like to know

[shadow jewel]

ah okay! so I'm trying to add some variation to the vertex animated shader in shadergraph and can't seem to find a solution without having material instance 🤕

[white marsh]

Im not very familiar with how it works in unreal but you want your vertex displacement variables to be plugged into the vertex input of the final node

[shadow jewel]

that's correct and I have it plugged into vertex input. I just need some way to have variation on sine time

[white marsh]

Oh isee. I don't know the names of all the shadergraph nodes as i dont use it much but you probably want vertex position += whatever displacement right?

I think that is just the position node

O wait nvm you have that already

Then im not too sure this looks fine to me

[shadow jewel]

so the result of this shader is the object just going up and down

similar to floating

[white marsh]

Yeah that would make sense

[shadow jewel]

but what I want to get is each object floating at different/random time

for that I tried adding an offset to the time node but it didn't seem to work 😦

[white marsh]

Yeah that would add it so all of the objects with the same shader

One solution would be to have a offset property and set it to a random number via a c# script

There are ways to get random numbers in the shader graph but i don't think that would be random for each instance

[shadow jewel]

hmm, okay! thank you! 😇

[karmic hatch]

I don't think you can use UV in the vertex stage, so anything that takes the UV won't be allowed to connect to the vertex shader.

You can certainly make vertex positions vary as a function of time in shader graph though

[vocal narwhal]

You can certainly use UV in the vertex stage, there's nothing wrong with it

[full zephyr]

yep, so long as you have a position you can derive a uv coordinate from, both vertex pos and fragment pos would work

oh wait no i was thinking of the uvs from a shader that's used for custom render passes

i think they're all from the vertex stage and passed onto the fragment shader

[devout gazelle]

Does anyone know this? 😦

[orchid latch]

I'm curious why I can't record the value

does anyone ever experience this ?

keyframe above is manually recorded, nothing to do with the shader parameter

[amber saffron]

You'll have to use a lit target.

[full zephyr]

isn't it sprite lit?

you could fix it with a double sided mesh with 2 faces back to back

it's to do with the normals i believe

[devout gazelle]

Shouldn't sprite lit do the same?

[full zephyr]

oh, the normals?

if it's specifically the normals you'll have to also configure your 2d lights

[amber saffron]

Hum, yes, it should iirc

[devout gazelle]

This is what happens, it doesn't appear to be working either

[haughty moat]

you'd probably want a very different implementation of smoothness and metallicity on a 2D sprite than the ones in PBR I'm afraid you'd need to implement your own (but surely examples can be found on a repo somewhere)

[devout gazelle]

Idk, for me it'd be pretty logical to be able to work with the same workflow with 2D sprites as I'd do with any other texture

For some more advanced sprite pbr features

I come from Unreal, so after seeing Unity sprites support Normal Maps, I took it for granted they'd support smoothnes and metallic as well

[haughty moat]

(My knowledge of Unreal isn't great) Because you can create several materials out of the same shader/graph with different property values in Unity, I think that Unity "Materials" are essentially Unreal "Material Instances". (although there is an extra possible instantiation layer at runtime like Rook89 said)

[haughty moat]

They might, in a convoluted way, or in a way not suported in shadergraph. I think this is rather recent, so like many recent Unity features they might be not quite finished.

[devout gazelle]

Been looking for it, and I've found nothing, seriously no one has had the idea or tried to do it before? 😅

[zenith heron]

Hello, I am using MaterialPropertyBlock. When trying to switch the sprite of the Renderer, however, the materialpropertyblock overwrites this and I find that all of my renderers have the same sprite. Do I need to overwrite the Sprite value in my property block, or do I have an entirely different issue perhaps? Thank you very much for your time,

[onyx talon]

Is there anyone know how to sample reflection probe in hdrp custom shader?

[onyx talon]

Do you mean convert the rgb color to grayscale?

That's simple. Channel R multiply 0.299, channel G multiply 0.587, and channel B multiply 0.114. After that, add all of them together.

[tawny echo]

Transparent shader. As soon as I add depthNormals/DepthNormalsOnly it goes to

Any idea?

It works in 2022 but not 2021

[shadow locust]

what are you expecting to see?

[robust path]

Hi, I'm messing around with compute shaders, and I've got an error that I just cannot figure out at all. I'm trying to set up a global struct variable, and I get an error message: Unknown parameter type (0) for someStruct at kernel Test
Here's my code:

#pragma kernel Test
struct ShaderData
{
    int i;
};
RWTexture2D<float4> rw;
ShaderData someStruct;
[numthreads(8,8,1)]
void Test(uint3 id : SV_DispatchThreadID)
{
    float4 pixel = float4(0,0,0,0);
    for (int i = 0; i < someStruct.i; i++)
    {
        rw[id.xy] = pixel + someStruct.i;
    }
}

Can anyone help me figure this out? Why can't I do it like this? I intended to set the struct via C# code before running the shader.
in my main code, I need a struct, because it's faster to set than sending 10 global parameters one by one back and forth from c#, this is just the easiest code I could make to reproduce the error

[tawny echo]

Sec ill show you @shadow locust

@shadow locust it is grabbing default background color for some reason. So buddy that the shader to me uses linear fog and he made this to cull the fog from the area in cube

It looks like this on his end

[orchid latch]

https://i.gyazo.com/0e54c18265bce0d626830b9932084989.mp4

help is there any tutorial to make button with animated glow ?

[full zephyr]

scrolling texture, with sin for oscillation

[meager pelican]

I need a struct, because it's faster to set than sending 10 global parameters one by one back and forth from c#,
someStruct is a single int. It's not an array of ints...Maybe you want a structured buffer or an array?

You mentioned a global, and maybe you're saying you want to pass "10" different values of varying types using a struct. Maybe see here:
https://docs.unity3d.com/ScriptReference/Shader.SetGlobalConstantBuffer.html

And use a struct containing "whatever" of size 1 stride to pass the data.

[tight robin]

how can i fix my material?

this is the shader graph for it

[robust path]

can't really see much on the screenshot

[tight robin]

its just simple graph with my textures,i just created a graph with using urp-lit graph

beginner to unity,so i dont know how to enable the urp

[regal stag]

Magenta usually means the project isn't properly configured to the render pipeline. Or Target under Graph Inspector -> Graph Settings is wrong. See
https://www.cyanilux.com/faq/#scene-magenta
https://www.cyanilux.com/faq/#sg-magenta

[whole estuary]

Hey guys, quick question
I'm trying to display a texture only at the top of a cube mesh, how could i do this?

edit: managed to solve it, for anyone looking back at this, i have splitted off the G from the normal vectors and multiplied my texture with that

[tawny echo]

What would cause an asset to go invisible when switching from 3002 to 1999 render queue?

I don't see any geo objects in front of it

at 3002

1999

[worldly crater]

I need help because I dont exactly know what iam looking for but seems really simple
i have this prefab

ignore white box

set up like this

What i want to achieve is some sort of glow, preferably some moving light, like light chasing around frame of portrait

or some shadow/glow around portrait

needs to be easily changeable to colors like red green blue

Would that be shader? material? or what? some tutorials if you know would be great

this is 2d sprite in world (not UI)

[lucid oriole]

Hi, so I've made a shader in which you can regulate how much substance you want in a flask. However it seems that the setting here is universal for all objects. Is there a way to make this setting individual for each object with only one material and one shader? Or do I have to make a shader for each of the objects?

[knotty juniper]

options:

1. create a material instance for reach object in the editor
   2.create a material instance for each object via code at runtime
2. use material property blocks to override the fill value per renderer

[mint cloak]

Can someone help me out? Thanks in advance!

im pretty sure im doing everything correctly in the if statement, no?

[knotty juniper]

what type are hitpos and _Edge?

[mint cloak]

float3 and float, respectively

[knotty juniper]

you cant compare a float3 to a float

[lucid oriole]

option 1 is manually making new materials and assigning them to the thing?

to the object I mean

[knotty juniper]

depending on how many objects you have that might be the quickest way

but if you have more the something like 5 it is probably better to use one of the other options

[lucid oriole]

its only those

however one problem

these get instantiated at will of the user

so uh

yeahhh

it wont work will it

[knotty juniper]

so option 2 or 3

[lucid oriole]

lets go with 3. I'm not quite good with shader graphs so could you help out?

[knotty juniper]

you probably change / set the fill value at runtime ?

[lucid oriole]

yes

[knotty juniper]

then you are already using option 2

[mint cloak]

Yep, that was the issue. For some reason the book was wrong. Thank you!

[lucid oriole]

well, I didnt code that in yet, but from what I gather I could just GetComponent and change the fill value?

[knotty juniper]

if you do

GetComponent<Renderer>().material.SetFloat("_fill", -0.5f);

unity will automaticly generates a new instance for you

[lucid oriole]

oh

and that's it?

nothing more

?

[knotty juniper]

yes

[lucid oriole]

okay, but there's one more thing

The size of these models. You see, although in one of them can got from -1 to 0.8 cleanly (-1 is nothing), in another one -1 still isn't enough and you can still see a lot of the substance

I think you can actually see it in the video

[lucid oriole]

.

Is there any way to solve that in the shader itself?

[knotty juniper]

you could try to use the
Object bounds y value to set the from and too values for your fill

or expose them to you can adjust it per object

[lucid oriole]

huh, my object node only has position and scale

[knotty juniper]

the screenshot is from HDRP Graph

Unity 2022

[lucid oriole]

oh

I am using 2020 version

Is there a way to make this work on 2020?

[knotty juniper]

you can also find the values from script and set it to your material

[lucid oriole]

values of fill?

or actually I have an idea

[knotty juniper]

fill should only define where the value is between the min and max value for the object

[lucid oriole]

I will just check the type of the object and adjust it accordingly

[knotty juniper]

@lucid oriole

[lucid oriole]

thank you

[lucid oriole]

does the branch node work the same as split?

[knotty juniper]

no not at all
branch gives either value A or value B depending on what value the determinator is
split only exposes each seperate channel of a vector

since im only interested in the y channel of the pixel position inside the object i use a split in that case

[lucid oriole]

and this is the whole graph?

[knotty juniper]

for my testacse

[lucid oriole]

oh

nvm my bad

i misread

not split

step

work the same as step

[knotty juniper]

step might be event the better coice

but in my case it should work the same

[lucid oriole]

alright

and in your case thats the whole graph, yes?

just to confirm

[knotty juniper]

yes that the whole graph
but its only a test shader that fills the color of the object either black and white
if you plug that logic into the value that controls what is valuable and what not the it should work

[lucid oriole]

okay so uh

we've got the min and max values

and uh

what now

[knotty juniper]

you can set them depending on the object
so you can define what the minimum and what the maximum fill value is for that object

maybe the bottle is filled to the max is its at 90 % of the object height but some other object goes to 100 or only 75

(also clamping the input value to a sensible range would make sense)

[gritty steeple]

Does anybody know what Shader would be causing this if it's missing from the build? It only ever happens with the built version of my game unless I disable 'Strip Shaders'.

[kind juniper]

Probably something to do with post processing., Seeing how it affects the whole scene.🤔

Assuming you mean the weird coloring?

[gritty steeple]

Even with it working after not stripping the shaders on the build?

Yeah that coloring isn't intentional at all and only appears post-build

[kind juniper]

Yeah. Are you using any post processing?

[gritty steeple]

Yeah I am

[kind juniper]

Try disabling the effects one by one and see if it changes anything in the build.

[gritty steeple]

I can try just ticking this off in the Renderer and see what happens

[kind juniper]

Could write a small debug utility script to disable the effects at runtime.

[kind juniper]

Sure, you can do that. But if you want to know what effect exactly causes the issue, you'll need to go through them one by one.

Try that first to see if the issue is with PP indeed.

[gritty steeple]

When you're talking about PP, you're talking about the Global Volume stuff too?

I have it attempting to build now with just that ticked off to see if it does anything.

[worldly crater]

tiling and offset move sprite, managed to make my sprite be smaller because i want to make outline, however doing that, leaves this brown color and I need it to be transparent, how would i achieve that?

talking about this

this is original

[gritty steeple]

God damn you were right. It's something with the Post Processing.

Oh wait hang on.. something's funky happening.

[kind juniper]

PP = post processing. But yes, you should have different effects defined on the global volume.

[gritty steeple]

I had turned it off but I built the project. Things looked normal but when I went to go back in the settings it was turned on again

[kind juniper]

Probably have some setting to enable post processing..?

[gritty steeple]

Could retoggling post processing have fixed that..

[astral pecan]

How to enable receive shadows on Shader Graph? Its enabled but not receiving shadow.
But the URP standard complex shader does receive shadow.

[unique oar]

Sorry had to delete the last message, need to rewrite the issue more specifically. I'm setting a vector in a compute shader from a C# script. I'm using that vector (or just its y component) to draw some pixels on the screen. When the last-saved file is my shader, this vector is zero. When the last-saved file is my C# script, the value is set properly.

I can show a video but it'll be recorded from my phone, since I only have cellular data and not home internet these days

What I'm doing here is hashing (to the range of 0 to 1) the value of id.x within the dispatch call and multiplying it by the y component of a vector called "borders." This vector is set by a C# script, and is just set to (screen width, screen height)

to test the resulting values, I'm drawing pixels onto the screen at different heights to the hash of their x-position multiplied by borders.y

If "borders" is set to the right value, the pixels should pretty much range from the top to the bottom in random vertical positioning. This is not what always happens. Let me send the video

sorry again for people talking in background, big family yk

[astral pecan]

Just found out that Deferred Rendering is the cause, they don't receive shadows on custom shaders?

Shader Graph doesn't support Deferred yet?

[unique oar]

So, I've figured out a little more about the issues I'm having. The "borders" vector is only set improperly on the first time I run my program after saving my compute shader file

god knows why

I know it must be a glitch with Unity itself at this point, but does anyone know a fix for this?

[kind juniper]

How/where are you setting the vector? Share the c# code.

[long moat]

Hello again, can someone explain me difference between Lambert shader and standard shader?

im trying to convert a lambert shader to standard and i get endless loop of shader import error

Is there a way to implement parallax occlusion mapping to standard surface shader?

[grizzled bolt]

Conceptually there is no "standard shader", it's just the given name for built-in render pipeline's lit shader
Lambertian shading refers to the mathematical model for calculating a surface's albedo reflectance
The standard shader might already be using lambertian shading, I'm not so familiar with it, someone who is could shine more light

[long moat]

i mainly recieve this issue: Parse error: syntax error, unexpected $end, expecting TOK_SETTEXTURE and it does not direct me to where the issue is

[karmic hatch]

I think Lambertian means light that hits the surface is reflected evenly in all directions - i.e. the pixel value is equal to the light color * pixel color * dot(normal, light direction), which is pretty much what the standard shader does when you set smoothness to 0 (i think the standard shader does something slightly fancier where when the view direction skims the surface, the color returned is more grey than when it's more head on)

[long moat]

nvm, thats not the issue, it doesnt tell me the correct issue as its stuck in an infinite shader import load, and the only way to escape it is by killing unity

[long moat]

i think i had to start with mentioning that im sort of a beginner in this field 😅

is it possible to convert this to standard shader?

basically i have a working standard shader and im trying to implement POM to it

but i dont find anywhere POM written in recognizable way 😅

[karmic hatch]

Basically the standard shader's diffuse lighting is roughly equivalent to Lambertian diffuse lighting, but slightly fancier (may depend on the render pipeline)

[karmic hatch]

https://catlikecoding.com/unity/tutorials/rendering/part-20/ here's a tutorial going through parallax mapping

Catlike Coding is always a good place to look for tutorials on how to do various things

[long moat]

thank you! ill try it

[lucid oriole]

Hi, yes I know I'm the speed demon, but those values are also universal for the whole material

[knotty juniper]

so the same as for the fill value applies either make a material per object type or set the value via script at runtime

[lucid oriole]

okay so if I do it via runtime I set the max value depending on the type of the object?

[worldly crater]

Hello, I have this shader

Can I somehow apply emission to it?

without emission texture since this is generated effect

[lucid oriole]

okay, so FlaskClone.GetComponent<Renderer>().material.SetFloat("_min", min); ?

and is the "_min" correct?

Since the name of the float is "Min"

and why doesnt this work?

FlaskClone.GetComponent<Renderer>().material.SetFloat("Min", min);
                    FlaskClone.GetComponent<Renderer>().material.SetFloat("Max", max);
                    FlaskClone.GetComponent<Renderer>().material.SetFloat("Fill", (float)productAmount / (10 * max));```

[long moat]

so i managed to do something but it completely ignores normal map and occlusion map that i have, also no shadows or reaction to light

this is how it originally looks without POM

[karmic hatch]

Are you still sampling the normal map and doing the lighting calculations with it?

[long moat]

i mean, this is the only line of code i have for normal map

im not so sure how to calculate it together with POM

i mainly want to parallax the result

[karmic hatch]

When you get the position where you sample the base texture from the parallax mapping, use that to also sample the normal map

[long moat]

youre talking about this part?

i can show you the whole shader code if you wish

[karmic hatch]

yes

[long moat]

how do i use it for normal map?

[karmic hatch]

You do exactly the same but put in the normal map instead of the main texture, and then perform the lighting calculations and multiply your final color

[long moat]

like this?

[grizzled bolt]

Anything you plug into emission will be used as emission
Procedural or sampled doesn't matter

[karmic hatch]

Does the bump map have normals?

I thought it was just a single dimension for depth

[long moat]

this is how the surf part works right now:

[karmic hatch]

When you're sampling the final color, also sample everything else, since you want the property where the ray hits the surface. Also since you're using cubes there's probably a good way to do the normals with POA when you hit the side of a cube that would work better than just sampling a texture (since i think the texture would just make it look flat since the faces of the cubes aren't recorded properly) but idk

[long moat]

im actually going to use quads, cube is only for demonstration

[karmic hatch]

I mean for your surface, it looks like it's lots of 3D cubes/cuboids from the parallax mapping, but since the textures are looking head on it won't know how to generate the normals of the sides of the cubes, so it'll just give them the same normal as the face pointing out

[long moat]

mm true, im trying to achieve sort of fake voxel look without using high poly count

[fervent flare]

I am trying to apply some changes to the UV's of my image as a last step before output, but there's no way to somehow 'compile' my current RGBA to a new 'quasi' texture with 0-1 uv's ... is there something I'm missing here? Can't I 'assemble' an image and treat it as if it were a texture2d with new fresh UV's ?

[snow ridge]

Hi guys, I have a question relating to shader switches when rendering an orthogonal map with entities on (rendered by Y order, where each entity may have its own shader)

In this type of scene, is it possible not to incur a lot of shader switches? As right now my design will cause regular switches between 'tree-shader', 'bush-shader' and 'grass-shader', and I'm wondering if i'm missing a trick?

[kind juniper]

What you have there is a float3 representing color. You don't have any texture at that point. You could render that color output to a render texture and use that in a different shader if you want, but you can't "reassamble" a new texture within the same shader.

[kind juniper]

What do you mean by "shader switches"?

[fervent flare]

Ah I see... thanks for clarifying!

[karmic hatch]

I'm messing around on Shadertoy rn, see if I can get some nice fake voxels

[snow ridge]

under the hood OpenGL is having to bind the shader to use it, that has a slight performance cost, and i'm trying to avoid that cost growing too large as my maps become very complex

[kind juniper]

Basically you're talking about draw calls?

[long moat]

shader toy?

[snow ridge]

draw calls and shader switches(swaps) are different things

[karmic hatch]

It's a site where you can write glsl code and then it compiles and displays it for you. It's quite easy to use and people have made a lot of cool stuff there. I believe Inigo Quilez is one of the founders; he worked at Pixar and has made tons of cool stuff, primarily focused on raymarching.

[long moat]

oh, thats pretty cool, ill check it out

[kind juniper]

Not sure I understand completely. From what I understand when you need to render something, you need to bind a shader and resources that it's using, like the vertex buffers, textures, transformation matrices, etc... That's what a draw call is afaik. Even if you use instancing and stuff so that all of the render scene data is always bound and only swap a shader, that is still a draw call if you ask me.

Either way, why not just use less(one) shader for most objects? They look like simple sprites, so I don't see why they'd need a separate shader..?

[snow ridge]

that's just a mock scene, in my actual game those things may have a spells cast onto them, or some other custom effect, and need to be visually transformed based on real-time variables (not something that can be done by adding more animations/spritesheet stuff)

[unique oar]

I switched to using separate floats for the x and y to see if that changed anything. (it didn't) Here's the code. It runs in the OnRenderImage method in a script on the camera.

        slimeShader.SetFloat("borderx", Screen.width);
        slimeShader.SetFloat("bordery", Screen.height);```

[kind juniper]

Well, you can only render that many things on the screen at the same time. As long as you're not being extreme, it should be fine with several shaders. You mentioned just 3 shaders. If the drawn objects are batched/instanced, that's just 3 draw calls.

[kind juniper]

Share the whole thing.

[snow ridge]

as far as i know the issue is that that the batch needs to be flushed before a shader swap?

or does unity have a smart under the hood way of handling this?

[unique oar]

sorry if the comments are a little lackluster https://hastebin.com/ilalamedig.cs

[snow ridge]

(i come from LibGDX btw, where all of this was a lot more manual)

[kind juniper]

I'd assume so. I'm not very knowledgeable in the low level stuff, but one draw call is running one shader on the gpu.

[snow ridge]

Mm ok, then yes, I am referring to draw calls by proxy 😅 as each shader swap could incur a draw call

[kind juniper]

It most likely does.

[snow ridge]

Should I be concerned about potentially 50-150 draw calls per frame?

It seems obscene but maybe I'm worrying about nothing

[kind juniper]

Are you "refreshing" the asset database after saving the shader? Does it recompile before you press start the game?

[snow ridge]

It's a mobile game so efficiency is vital

[unique oar]

nope. it never does that after I save shaders, actually. even lets me change the code at runtime

[kind juniper]

Not really. ~100 is acceptable even on mid tier mobile devices. Although it's a bit unthoughtful to judge just by the draw calls count.

[snow ridge]

Yeah I'm on this train of thought as my FPS was dropping to 30/40

[kind juniper]

The point is that you should test and profile on the target devices, instead of relying on imagination.

[snow ridge]

So the judgement originated from profiling on my 2 mobile devices

And I've made sure that's the bottle neck

(Turned off all other systems, and for sure my entity shaders swapping is the culprit, causing inefficient batching)

[kind juniper]

Did you try pressing ctrl + r after saving the shader? If you make changes at runtime it will have to recompile the shader, and potentially any bound values might be lost.

[kind juniper]

What do you see in the profiler?

[kind juniper]

Are you actually calling low level graphics api manually?

[unique oar]

It's not when I make changes at runtime though. You can see in the videos I sent that the saves were made while the program wasn't running

[snow ridge]

High draw calls/shader swaps and low fps, this is on my LibGDX game and I'm contemplating swapping to unity due to it

So I'm making sure that I dont run into that same issue in unity

[kind juniper]

Ahh, okay. I barely have any experience with libgdx(used it a bit long time ago before unity), so I'm not sure how that profiling data maps to unity, but yeah, you should be able to batch/instance these draw call in unity.

[snow ridge]

Ok cool, thanks for helping and I'll have to look into this more deeply - if you have any resources you could point me to that would be great, no worries if not, I appreciate your time

[kind juniper]

Hmmm... Can you share the shader code as well?

[kind juniper]

Well, there isn't much "extra" to learn aside from how to work with unity itself. The engine would usually take care of batching if you set up your scene properly. If you still need help optimizing after recreating the scene in unity, come and ask here again.

[snow ridge]

Cool thank you 😀

[ionic compass]

is there any tutorial about shader making a mesh gradient

[sinful ermine]

Hi,
How can i pass a Texture2D from a compute shader to a fragment shader? What type do i need to use in the fragshader?

or do this in another approach, in general:
generate a 2d "array" of colors in a compute shader, to then pass it to the fragment shader

[lucid oriole]

@knotty juniper mind helping out?

[abstract adder]

I have 3d vector where one component is 0. I want to convert this to a 2d vector with the components that are not 0. Any of the 3 components can be 0 and which one it is can change between fragments. I could do this with branching but I'd rather not. Intuitively it feels like there's a way to math around this problem but I can't come up with one. Anyone got an idea?

[karmic hatch]

https://www.shadertoy.com/view/dslGR2 it's full of artefacts but the normals work most of the time (the artefacts are a lot more prominent when it's moving up and down tbf)

[meager pelican]

If you can guarantee one of them is a zero, you can probably use an expression.
I'm thinking
float2 two = float2(max(three.x, three.y), max(three.y, three.z);
But that only works if the non-zero ones are positive values.
EDIT: That doesn't work in all cases, anyone reading this don't use it.

You could use ternary operators with three checks...but can you guarantee that there's only one zero value among the three elements?

If so you can do

// you could make one of these a default instead of (0,0)
two = (three.x == 0) ? three.yz : float2;
two = (three.y == 0) ? three.xz : float2;
two = (three.z == 0) ? three.xy : float2;  

But that's not really much different than an if/branching.

[knotty juniper]

the first paramether is the name inside the shader and that is probably different then the display name
https://docs.unity3d.com/Packages/com.unity.shadergraph@8.1/manual/images/keywords_boolean.png
the correct name is the one that is labeld Reference

[lucid oriole]

oh

okay

thanks

[long moat]

oh wow this looks good, but how do i translate it to a standard surface shader?

[karmic hatch]

The way it works is it runs through to search for the nearest thing a ray would hit (the bulk of parallax occlusion) then if it's near a boundary between two grid squares, it calculates which side's square is higher, and then stores a normal facing away from that square, as well as the surface parameters of that square. If it's not near such a boundary, the normal faces up and it stores the parameters of the square. After that, it goes through lighting and a Gaussian blur for bloom.

I think what you want is to store the coordinates of the textures where the ray hits, check if that's near a pixel boundary on the texture (you don't need to sample the texture for this), then check which pixel will be higher (you do need to sample the texture), then get the surface parameters from there.

Idk shadows but it goes over it in the tutorial

[tawny echo]

In unity stencils

is comp comparing refs or pixels or what

I lied

figured that out

Next question

My object A: has unity's URP/unlit default shader

and im trying to have an object inside it that uses a stencil buffer. (house uses default shader) and my object inside house has an actual stencil buffer. I set it to comp Greater, but its still rendering in front of the house model

[tawny echo]

Got that also

[lucid oriole]

why doesn't this work still?

FlaskClone.GetComponent<Renderer>().material.SetFloat("_min", min);
                    FlaskClone.GetComponent<Renderer>().material.SetFloat("_max", max);
                    FlaskClone.GetComponent<Renderer>().material.SetFloat("_fill", (float)productAmount / (10 * max));```

the reference is "_min"

i dont get it

[knotty juniper]

and the material that you want to change is on the FlaskClone object?

[lucid oriole]

yes

wait no

lmao

I just realised

IT WORKS

but uhhh

one issue

(float)productAmount / (10 * max) is quite a boggus way to calculate the thing

the amount I mean

how could I make it work better?

[knotty juniper]

probably remap the fill value that you have to the range that the shader expects
if that formula works you can keep it that way

[lucid oriole]

it doesnt

the left one is one gram

the right one is 5 grams

obviously it shouldn't look that way

[knotty juniper]

i would design the shader that fill of 0 is the minimum value (empty) and 1 is the max fill height

then you only need to remap the the range you want to the 0-1 range

what is your maximum number of productAmount ?

[lucid oriole]

there isnt one since the user writes the number in

well, the zero in most of the cases is only half of the game object, not sure why

[knotty juniper]

that is what the min and max values are for
they say what value is the minimum fill value and max what is the maximum fill value

so there is no way to know what is coincided full?

[lucid oriole]

I mean I have checked it manually and for this model min is -2.2

so it sets it to -2.2

[knotty juniper]

so if you set fill to 0 it should be empty right and if you set fill to 1 it is full

[abstract adder]

Thanks for the suggestion. (max(x,y), max(y,z)) breaks with z=0 y>x, as you'd get (y, y) unfortunately. I've been thinking in a similar direction but can't find a solution that works for any of the 3 components being 0. I might need to rethink the problem from the beginning.

[knotty juniper]

this is what i use in my test case

https://hatebin.com/tcykqylhlm

this only handels the fill value

[abstract adder]

I assume you wanted to reply to @lucid oriole?

[knotty juniper]

ah sorry ^^ thanks for the hint 🙂

@lucid oriole

this is what i use in my test case
https://hatebin.com/tcykqylhlm
this only handels the fill value

[meager pelican]

You're correct about it breaking with max(), sorry.

What about the 2nd solution? The three ternary operations (might be able to reduce it to two) should work, I'd think.

Particularly if you reduce it to two ternary operations, it shouldn't be a huge performance problem. That doesn't mean you can't come up with an entirely better way of doing whatever it is that you're doing, but being overly scared of conditionals in shaders is a common phobia. 😉

[visual mesa]

How do you use lerp in a gpu instanced shader? I want to lerp a mesh between two points to make it move on screen

[kind juniper]

You can use lerp in the shader code. I don't think there's any difference between instanced or not for the lerping itself.

[karmic hatch]

you should make it a slider!

[plain heron]

Hello, I'm trying to reveal a texture on a plane only if a uv flashlight is shining upon it. I found some shaders online but they are only for urp im using hdrp and i get the pink missing texture. Can somebody help please?

[knotty juniper]

Good point, it was just to demonstrate that it works

[elder nebula]

Guys i need help

[compact reef]

how can i add cutout feature in mobile diffuse shader?

[elder nebula]

I came up with an error

• Could not find video decode shader pass YCbCr_TO_RGB1 in shader Hidden/VideoDecode

Could not find video decode shader pass YCbCrA_TO_RGBAFull in shader Hidden/VideoDecode

Could not find video decode shader pass YCbCrA_TO_RGBA in shader Hidden/Video Decode

Could not find video decode shader pass Flip_RGBA_To_RGBA in shader Hidden/VideoDecode

Could not find video decode shader pass Flip RGBASplit_To_RGBA in shader Hidden/VideoDecode

Could not find video decode shader pass Flip SemiPlanarYCbCr_To_RGB1 in shader Hidden/VideoDecode

Could not find video decode shader pass Flip SemiPlanaryCbCrA_To_RGBA in shader Hidden/VideoDecode

Could not find video decode shader pass Composite RGBA_TO_RGBA in shader Hidden/VideoDecode

GUI Window tried to begin rendering while something else had not finished rendering! Either you have a recursive OnGUI rendering, or the previous OnGUI did not clean up properly.

Assertion failed on expression: 'device.IsInsideFrame()'

SceneView Selected shader is expected to have 7 passes

UnityEditor Dock Area:OnGUI()

SceneView Selected shader is expected to have 7 passes UnityEditor Dock Area:OnGUI()

SceneView Selected shader is expected to have 7 passes UnityEditor Dock Area:OnGUI()

SceneView Selected shader is expected to have 7 passes UnityEditor.DeckArea:OnGUI()

SceneView Selected shader is expected to have 7 passes *

This is what written

I have problem with the first 8 errors (main issue)
and the others too (secondary issue)

How do I fix this??

Pls help ASAP

I checked Google too. But it didn't help

[grizzled bolt]

You should format the error dump in a code block or use a paste site
And more importantly describe what you intended to do and how the issue came up

[elder nebula]

Can I DM you or should I send it here itself

[grizzled bolt]

No, this issue doesn't sound familiar to me
But for anyone else to be able to help it's important to give relevant details along with the question

[elder nebula]

I basically started unity and i saw the sky was black, when i added an object it was black too and the when i entered the play tab it was fully pink..

Is there anyway i can contact the mods??

[wraith hare]

Oh dude I would NOT contact the mods you'l just annoy them

The thing is for free troubleshooting and advice- you get what you get. You post your question and hope someone can answer. If nobody can answer, then that's it. Take to the forums instead

but for a screwy black sky that sounds like you didn't convert over to URP right.

Are you doing URP?

[grizzled bolt]

If by this you mean that it happens on a fresh newly created project, then I'd reinstall everything

[grizzled bolt]

Only in moderation-related business, such as if you're being harassed by another user

[wraith hare]

reimport all works. But. Seldom.

[grizzled bolt]

This / deleting the library has fixed all kinds of vague issues, and quicker than reinstalling ^^

It's best to use the newest LTS editor version and to not create the project in OS controlled system folders

[long moat]

can someone explain why does this happen? im using projector and instead of making one shadow blob covering everything, it makes one for each object

not sure if its because of shaders or not, im using default projector/multiply shader from standard assets

[kind juniper]

What shaders are you using for the objects?

[long moat]

default standard shaders when you create a new cube or quad

also im on built-in render pipeline

[kind juniper]

Hmm

Can you take a screenshot of one of the cubes inspector? With the renderer component and the material expanded.

[kind juniper]

Hmm... Can't see anything out of order.🤔

Can you share the project inspector with it's material as well?

[kind juniper]

Okay. And the inspector of the texture you're using in the material?

[kind juniper]

Everything seems fine.🤔

[long moat]

😟

[kind juniper]

Can you try a spotlight instead and see if it has the same effect?

[long moat]

spotlight?

[kind juniper]

A spot light. Add a light component, make it spot light and configure it in a way similar to the projector.

[kind juniper]

This one seems to work properly.

[long moat]

maybe the issue is with the script?

{
    Properties
    {
       _ShadowTex("Cookie", 2D) = "gray" { TexGen ObjectLinear }
       _FalloffTex("FallOff", 2D) = "white" { TexGen ObjectLinear }
    }

    Subshader
    {
        Tags { "RenderType" = "Transparent-1" }
        Pass {
            ZWrite Off
            Fog { Color(1, 1, 1) }
            AlphaTest Greater 0
            ColorMask RGB
            Blend DstColor Zero
            Offset 0, 0
            Ztest Equal
            SetTexture[_ShadowTex] 
            {
                combine texture, ONE - texture
                Matrix[_Projector]
            }
            SetTexture[_FalloffTex] 
            {
                constantColor(1,1,1,0)
                combine previous lerp(texture) constant
                Matrix[_ProjectorClip]
            }
        }
    }
}```

[kind juniper]

Is that the one that was included in the standard assets?

[long moat]

supposedly so, i looked up for just the script without getting the whole package installed

the only thing i changed is Offset -1, -1 to Offset 0, 0 and added Ztest Equal so that it will work properly on cutout materials

but thats still does not fix this issue

reverting it does not fix it

[kind juniper]

That looks so very different to regular shaders. I've no clue what's going on in it. Maybe someone with more experience could help...🤔

[long moat]

wait, so thats not the correct shader?

[kind juniper]

It probably is. I'm just not sure how it works.

[oak ingot]

this might be a bit of a basic question, but is there a way to have a custom input node in shader graph?

currently i store my data in a texture3D but if theres a way to pass a custom data type through that would be faster

[long moat]

oh well.. thank you regardless

[kind juniper]

You could use a structured buffer. You'll need a custom function node that samples it though.

[oak ingot]

thanks, ill take a look

[plucky hazel]

Does anybody worked with stencil buffers to punch simple holes into the walls? I need to find a way to fake this kind of effect without manipulating the mesh, kind of like the townscaper. Also, the player will probably see a lot of them at the same time so it shouldn't be so expensive.

I spawn the props seperately and I want them to punch a hole in the buildings.

[knotty juniper]

this could work for that
https://www.youtube.com/watch?v=cHhxs12ZfSQ

[steel elbow]

im trying to render in a low res / pixelated veiw by using a render texture plugged into a raw image but every time something moves in the scene it leaves an after image like so, anyone know how to fix this?

nvm all fixed