archived-shaders

[tacit stream]

how is color defined

when it's float4?

what is maximum?

[regal stag]

Each component is usually between 0 and 1. Values might be higher for HDR colours though.

[tacit stream]

o.color.a = _Properties[instanceID]; _Properties in this case a float value that can be from 0 to 100000

            v2f vert(appdata_t i, uint instanceID: SV_InstanceID) {
                v2f o;
                if (_Properties[instanceID] == 0){
                    o.vertex = float4(0,0,0,0);
                    o.color = i.color;
                    o.uv = i.uv;
                    return o;
                }
                uint mInd = instanceID / _NumOfArrays;
                uint ind = instanceID - _SizeOfArray * mInd;

                float4 rotated = RotateAroundYInDegrees(i.vertex, _Angle);
                float4 pos = mul(_Matrices[ind], rotated);
                pos.yw += mInd * 0.001;

                o.vertex = UnityObjectToClipPos(pos);
                o.color = _Colors[mInd];
                o.color.a = _Properties[instanceID];
                o.uv = i.uv;
                return o;
            }

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

struct is defined like this

so I guess I need to normalise

soooo, smth is wrong

            Color[] colors = new Color[grid.gasGrids.Count];
            for (int i = 0; i < grid.gasGrids.Count; i++)
            {
                colors[i] = new Color(grid.gasGrids[i].def.color.r, grid.gasGrids[i].def.color.r, grid.gasGrids[i].def.color.r, 255);
            }
            colorBuffer = new ComputeBuffer(colors.Length, sizeof(float) * 4);
            colorBuffer.SetData(colors);
            material.SetBuffer("_Colors", colorBuffer);

            v2f vert(appdata_t i, uint instanceID: SV_InstanceID) {
                v2f o;
                if (_Properties[instanceID] == 0){
                    o.vertex = float4(0,0,0,0);
                    o.color = i.color;
                    o.uv = i.uv;
                    return o;
                }
                uint mInd = instanceID / _NumOfArrays;
                uint ind = instanceID - _SizeOfArray * mInd;

                float4 rotated = RotateAroundYInDegrees(i.vertex, _Angle);
                float4 pos = mul(_Matrices[ind], rotated);
                pos.yw += mInd * 0.001;
                o.vertex = UnityObjectToClipPos(pos);

                float alpha;

         //       if (_Properties[instanceID] > 512){
           //         alpha = 512;
             //   }
               // alpha /= 512;
                o.color = _Colors[mInd];
            //    o.color.a = alpha;
                o.uv = i.uv;
                return o;
            }

if I think correctly, this is supposed to draw mesh with default color (from _Colors) wherever there's non-0 _Properties

but nothing is drawn

oh

actually, it is drawn

just in wrong position

uncommenting discarding part removed them as well

hmmmm

[timid minnow]

In HDRP, is there a way to achieve this effect entirely through Shader Graph? https://www.reddit.com/r/Unity3D/comments/l6vj0x/moved_from_normal_transparency_to_dither/

I have a split screen multiplayer game, and need this to run entirely in the shader, ergo cannot raycast/spherecast to determine occlusion

[tacit stream]

                uint mInd = instanceID / 5625;
                uint ind = instanceID - 5625 * mInd;

so

I found why my meshes don't get drawn

instead of 5625 there should be _SizeOfArray

but when I leave like this

it just doesn't work

material.SetInt("_SizeOfArray", map.cellIndices.NumGridCells); in C#

int _SizeOfArray; in shader

SetInt is run before first Draw call

sooo? Is it dividing by 0?

[meager pelican]

A shader is the only way that I know of!
Use the "alpha value" to look up a screen-space dither value for the object. How you calc that value is up to you. Looks like distance in world-space from the camera position.
Since you're in URP/HDRP, you can use the dither node in SG.
Otherwise, for others, see the code example for that node anyway, since you can use that code in the built-in pipeline too. https://docs.unity3d.com/Packages/com.unity.shadergraph@6.9/manual/Dither-Node.html
You would do an alpha clip based on the value returned from the dither function compared to the "alpha value" that you want to have/calced.

[timid minnow]

Ahh right, I should have clarified: I just would like to have dither and fade based on occlusion, which is tricky without access to things like raycasting

I did make a shader already using SG that achieves the effect, but having occlusion factor in seems to be an impossibility in a split screen multiplayer context

[tacit parcel]

you could just make a screenspace distance to alpha based on certain object (in this case, player) screenspace position

[timid minnow]

what exactly do you mean? Is there any chance you can make an example graph?

If not, I might be able to follow along with a little bit more detailed of an explanation

Here's what I currently have

[soft jacinth]

It's a dynamic scene so I'm creating the mesh/normals at runtime. modifying them might be reasonable, not entirely sure how well that would play out as this is a lit scene yes.

[shrewd tusk]

Anyone know a really good tutorial for shaders?

[fervent tinsel]

@shrewd tusk there are some pinned to this channel

[shrewd tusk]

ok

[long granite]

Hey so whats the best shaders in unity for performance on older machines?

Im currently using built in legacy diffuse for everything (also because i like how it looks)

[coral parcel]

How do I get this, which is in there, to actually do anything useful to this

Where is the actual output for this?

Because right now all I have is a useful sub-graph being held back by a useless basic graph

Because there's nowhere for me to actually put this output

Update, I found the output, it just does fucking nothing

Even as an unlit material, nothing

[coral parcel]

Even when I just try to make a base color, nothing

Who's idea was it to remove PBR graphs?

[fervent tinsel]

answered on #archived-urp

(as a side note: crossposting is evil)

[limber fossil]

Hello. Which unity standard or URP shader is best for photogrammetry?

[tacit parcel]

I'm not too familiar with shadergraph, but here's what I have in mind

• get current texel screenposition
• get assigned position fetch via script, transform it to get it's screenposition (or maybe fetch it's screenspace position via script instead)
• get the distance between those screen position, assign to current color alpha (most likely need to be clamped and invertedby using, 1 - clamp01(alpha))
• also need to take account the z-distance between player position and texel position

[meager pelican]

You know? I realized what you were asking after I went to bed last night! lol. I thought "Maybe he's worried about the view vector/occlusion thing, not the dithering." Sorry for being dense.

Anyway, yeah, I thought about it. IDK what the real "pro" solutions are...and I assume there are several.

Like @tacit parcel is saying, you'll have to invent a method that works for your desired use-case. You could make a very simple one, or a more complex one.

You could try his example.
You could just decide to break the screen into "areas" and (mathematically) decide to fade things out based on the player's screen area and the object's area-nearness.

What I was thinking about was a "mini-frustum" inside the real view frustum. That would be constructed based on the player's character....some how. Maybe even on the C# side since you know the player pos and the camera pos at the start of the frame. And you'd have a bounding box for the player.

The trick with all that is that you'd need to know the OBJECT'S bounding box (AABB) and know if it intersects the mini-frustum AND is closer to the camera than the player is. That's when you fade.

That's conceptual. It seems expensive, since you'd have to know every object's AABB.

Maybe another way is with some kind of stencil test, you may need layers or 2nd cameras for that. The problem there is that's per-pixel, not per-mesh/object.

Yet another way is a GUESS. If the object is closer than the player AND it is within a certain distance to the view vector from camera to player, fade it out. That's cheap and easy, you could stuff the object specific width/distance into a vertex color or something, so it's a mesh-global.

IDK. Maybe I'll dig around and see if I can find a tut or demo of how it is normally done. I'm curious now.

[tacit stream]

Do Unity shaderLab support byte?

I want to send certain buffer struct with byte values

0 to 255

[meager pelican]

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

[tacit stream]

so, the least I can get is half?

[meager pelican]

That's floating point, not int. But you could do that. Check the range.

The other way is to either

1. use 4 byte uints.
2. use math to stuff values into uints, so you get 4 per uint. And create functions to decompress it all. Like with modulus.

GPU's like to read things in 4-byte boundaries from memory. Reading byte by byte is probably slower than reading 4 bytes at once. But then there's the math overhead to decode it all.

The binary operators AND/OR/etc work on uints.

[tacit stream]

That's the point I need to use as smaller memory as possible

my biggest bottleneck is CPU side memory allocation

2 bytes less than 4

so half is fine, even with floating point

[meager pelican]

Well, I'm unsure what you mean by that...size or the fact that you have to do it...because it is managed memory pool with garbage collection. Make sure you only allocate the buffer once, hang onto it, and then reuse it.

BUT...you're saying size. So you have A LOT of (0-255) numbers to stuff into your buffer, yes?

[tacit stream]

yeah, I need to send struct array

        struct MeshProperties
        {
            int index;
            float alpha;
            byte color;
        }

best way would be this

but, since byte is not supported

will figure smth else

basically, GPU is least used part in game I mod, so

making it work extra and freeing CPU is always a win

[meager pelican]

Take the color (0-255) and break it out into another structured buffer. Use uint type. And math it out to get to the right 4 bytes and compute the mask and bit shift.

[tacit stream]

color is index

already

I send number from 0 to 10

basically

which points to buffer on GPU

[meager pelican]

Right, which is why it is < 256. Doesn't matter to my point.

You want byte-by-byte to reduce size.

You can do that.

But you need to break it out into uints and bit-shift/mask.

[tacit stream]

I kinda lose you in this one.
You mean I can use my 32 bit value as 4 values?

[meager pelican]

Yes, exactly that. 4 x 8 = 32

[tacit stream]

that seems overcomplicated tho

[meager pelican]

It is, because shaders/GPUs don't support byte. 😉

[tacit stream]

And it'll be easier to just send it as it is, rather then making CPU create that kind of data

sad life, but what can you do

easier for CPU I mean

[meager pelican]

Yeah, that was option 1. Byte (ha!) the bullet and send it as 4 bytes. Sucks. But maybe you can stuff something else into the unused 3 bytes and mask that off as another thing. Flags, whatever.

Like how big is "index"?

And alpha can be stuffed into a byte too.

So in 4 bytes, maybe you can have a 16-bit index, an 8 bit color, and an 8 bit alpha, all stuffed into 1 uint.

[patent plinth]

@regal stag thankx for the tips yesterday! I did you told me, it works!

[tacit stream]

eh, I'll just leave it as it is

sending 2xint and float

[patent plinth]

still rough, but it works! wooo!

[tacit stream]

I better focus on some other stuff, rather then spending weeks optimising same thing

[patent plinth]

Still not sure what I did wrong, the color between sharp blended textures look messed up, but my terrain shader that mimics the look of wind waker is almost done... dayum, I never though I can do this

sometimes the sharp blend thing doesn't work on certain surfaces, which also weird... I think I got this

supposed to copy this ... yeah.. pretty close I guess

[regal stag]

Nice 👍

[heavy pebble]

I'm trying out a basic stencil mask unlit shader in HDRP. It works, but scene lighting seems to affect it for some reason..? If I disable scene lighting toggle in the scene view I can see it behaving ideally. (if equal, render, otherwise disappear). I cannot see it in game view either way. The shader in question : https://hatebin.com/hookdirqke

[fossil cloak]

Hey, Can someone explain me, why the Background is tiling and the icon not? 😄 the uv of the flags is done over 3 uv spaces

[grand jolt]

Why are you using CGPROGRAM and UnityCG lib? That's legacy. You need to use HLSLPROGRAM and the correct include for your SRP.

From what I remember, HDRP uses most of the stencil bits for deferred rendering.

You get like 2-4 not taken ones I think?

I better look this up.

[regal stag]

The Icon texture is probably set to Clamp wrap mode in the texture import settings

[grand jolt]

0lento said on the Unity forum that we only get 2 stencil bits, wonder which ones.

[fossil cloak]

Oh yes, it is. Didnt know that this exists 😄 cool ty

[heavy pebble]

tbh, I have 0 experience with shaders. I compiled this code from a bunch of tuts.
And yeah I've read the forum post that we get 2 bits, and I've still not gotten to the part on how to use those particular bits

or which ones those are

[grand jolt]

Looks like the user bits are 64 and 128.

[heavy pebble]

I found this a while ago though :

Bit #7 (value=128) indicates any non-background object.
Bit #6 (value=64) indicates non-lightmapped objects.
Bit #5 (value=32) is not used by Unity.
Bit #4 (value=16) is used for light shape culling during the lighting pass, so that the lighting shader is only executed on pixels that the light touches, and not on pixels where the surface geometry is actually behind the light volume.
Lowest four bits (values 1,2,4,8) are used for light layer culling masks

This although, was for deferred rendering

[heavy pebble]

ok that helps

[grand jolt]

Wait, that's not how bits work.

Idk, hopefully you can decipher this haha.

[heavy pebble]

I can't even fathom how to set these bits left open for me to use 🤦‍♂️

[grand jolt]

@heavy pebble well, it seems stencil ops support masking. So you can specify which bits you want to write to.

Here's the thread btw https://forum.unity.com/threads/hdrp-stencil-ref-and-stencil-buffer.923960/

[heavy pebble]

Do you know where I can find a sample unlit HDRP shader?

[grand jolt]

No 😅 I am Shader Graph only when it comes to HDRP. You could look at the Unlit shader in its package folder maybe.

[heavy pebble]

I have looked at that, and its 600 lines of code I'm not educated enough to understand :')

[grand jolt]

Well let's just say that's the HDRP experience 👀

[heavy pebble]

ok last question, in regards to my lighting problem, do you think its probably because of my wrong shader code or something else might be fucking things up too?

[meager pelican]

@heavy pebbleSounds like the lighting/etc systems are messing with your stencil bits, like Beat and others have said above.
You have to use the correct bits AND the correct mask, or you're screwed.
As to the rest of the lighting calcs, it's all code. But there's self-lighting, GI lighting, baked lighting, and shadow un-lighting...to coin a phrase.

[heavy pebble]

If it helps its just 2 directional realtime directional lights 😄
But thank you @grand jolt and @Carpefun. I'll play with the bits and masks and see if it solves my problem(s).

[sacred patio]

Anybody has a tip on how to make the scrolling happen only through one axis instead of going in this diagonal line?

https://i.gyazo.com/fa2f602fdf62eca7864a5260b9aabc73.gif

[regal stag]

Put the Multiply output into one axis of a Vector2 node first

[sacred patio]

I kept putting vector 2 for tiling oops. Thanks

[sacred patio]

And how could I get the texture coordinates in the unity graph? I need to split the UV node somehow or

[regal stag]

Exactly what you described, UV node into a Split node

[inland rose]

I made a shader graph the other day to render concentric circles to make some type of aoe visualization, which I was attaching to a plane, rendering the plane to a render texture, and then using that texture as the main texture in a decal shader. But that all seemed to be bad performance so I just moved the circle drawing directly into the decal shader. Added dashed borders too

however I am using some if statements in the fragment shader which I keep reading are bad

#if _DashedSegmentEnable
                float angle = atan2(abs(0.5 - uv.y), abs(0.5 - uv.x)) * 180 / PI;
                float mod = 360 / _DashedSegmentCount;
                float gap = _DashedSegmentGap;
                float offset = gap + (mod - gap) / 2;

                if(fmod(angle + offset, mod) > gap) {
#endif

                    if(len > outer && len < radius)  {
                        return _OuterColor;
                    } else if(len > inner && len < outer)  {
                        return _InnerColor;
                    }

#if _DashedSegmentEnable
                }
#endif``` does branching like this cause major performance issues?

[tacit stream]

how to access 4 fields of fixed4?

I have fixed4 col

I want to change alpha (3) value of it

col.???

or is it col[3]?

[inland rose]

I think you can do either col[3] or col.a?

[tacit stream]

col[3] *= 0.5;

this compiled

I hope it's ok

[inland rose]

xyzw = rgba

[tacit stream]

col.w?

[inland rose]

i mean you can use them interchangeably

and you can also swizzle the values, e.g. col.ga will give you back fixed2 with green and alpha values

[tacit stream]

huh

I'm guessing by examples

shader language has nearly 0 built in functions

like random

noise

and etc

and I have to add them myself?

[inland rose]

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

[tacit stream]

Is _Time built in?

[crude sun]

Hi. I'm using URP and would like to use spheremasks to create see-through bullet holes in objects. Is this possible? How would I go about creating a variable amount of spheremasks?

something like this

[woeful geyser]

Did shader graph in 2021 get bone index/weight vertex attribute nodes?

[lost scarab]

In URP is there a way to add a metallic/smoothness output to a sprite lit material?

[meager pelican]

if those properties are uniforms...eg you set them on the material, it won't cause major issues, since all cores in a workgroup will follow the same branch. The problem with "big bad if's" is that all cores share a program instruction counter and work in lockstep so if one core has to execute the condition, they all have to wait if they are executing it or if they are masked off, it still takes the time.

BUT

In your case, you can probably use shader variants instead (actually I think that's what you're doing). This makes different compiled versions of a shader depending on some material properties set. Basically conditional compilation. That's why you have if's as pragmas and not as inline code for the dash logic.

The other ifs that you have that are compiled in (like if's for length) are just small statements and won't cause too much execution time. In those cases, you can assume that the worst-case situation is the total time taken to evaluate and execute both sides of the ifs. Doesn't look like it is too bad in your case. Let the optimizer deal with it, IMO.

You can probably re-arrange the if's to be a bit more performant, and you should watch out for = conditions, like when len = outer.

[inland rose]

Right, I figured the pragma would get optimized, I was more wondering about the dynamic if checks

[meager pelican]

Yeah, worst case is that the total "cost' is for evaluating and executing BOTH sides of the if. Which isn't very much cost in your case, your colors are already calced, so it's mostly evaluation of some pre-known values.

[inland rose]

Okay. Honestly this is all a bit above my level of understanding, but I suppose if it ever becomes an issue I can try to profile it. Thank you for the in-depth answer

[tacit parcel]

It should be possible using stencils, not sure if URP's shadergraph support it though...

[sly breach]

is this a special hlsl syntex [ * + ] ? as seen here : return float2(sin(UV.y*+offset)*0.5+0.5, cos(UV.x*offset)*0.5+0.5);

the snippet is from unity docs : https://docs.unity3d.com/Packages/com.unity.shadergraph@11.0/manual/Voronoi-Node.html

[vocal narwhal]

it's the same as c#

[mellow owl]

Hi
I am a beginner in Unity btw
How can I outline a 3D GameObject no matter from what direction I look at it?

I think I am in the right channel

Ping me pls if you got the answer

[fervent tinsel]

@heavy pebbleyeah you should really mask those unless you want to overwrite the existing values... one thing to note though is that some of the HDRPs internal stencil usage is already done at the point when PP stage runs, you can get better understanding of the lifespan of specific stencil bits here https://github.com/Unity-Technologies/Graphics/blob/master/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDStencilUsage.cs

meaning, if you can be certain HDRP doesn't need the bit at the point you are using it, it's safe to use for your own things too and you will not be limited to just those two user bits

HDRP uses some of these bits multiple times for separate purposes as well

well... "safe to use" applying mainly to that version of HDRP, there's no guarantees Unity won't shuffle the non-user bits around in future releases

but like, if you are short on available bits, may want to look into those, otherwise just stick with the two user reserved ones

[long granite]

Just wondering but is a ps1/ps2 styled shaders? That doesn't reduce performance

since when I tried the tutorial for it (not with shaders, but using another camera), my game used much more resources than without

[unreal gale]

Hi, I am using URP and am trying to make a rendered material override if the objects are too far from the character, but I am not able to get some valid results yet.

• I made a radial gradient texture that I fit onto a very short cylinder which is in a special layer.
• I then made a camera that would watch only this layer and output to a render texture
• I made a shader using shader graph which (in theory) will desaturate to a full black any object that is not inside the gradient and put it in a material
• I finally used that shader inside a forward renderer's "Object render" feature, and made my main camera use it.
• As a result right now, I am seeing only black, as the gradients don't seem to be taken into account

Here are the two shaders I tried out, one using only the gradient camera, and one using a secondary normal camera to output to a render texture

[tacit parcel]

No, PS1 games look that way because of hardware limitation. and PS2 afaik, doesnt have programmable shader capability. It does have some 'preprogrammed shaders' (flat, bumpmapped, gouraud, cell shaded, etc)

The best way to simulate PS1 looks is to use flat shading, low texture with point filtering, and switch to low res screen resolution. And maybe disable perspective correction via shader

[long granite]

Ohh okay thats nice and how do i use flat shading? is it like a way to draw textures? and whats perspective correction and how do i disable it

[heavy pebble]

o_o. Thank you for that link, very helpful. I figured it out yesterday after heavy trial and error to mask the bits. Your answers on the forums are gradually helping me achieve my goal 😄.
Right now only planning to use the 2 bits, but unclear how many I actually need. I was aiming for reusing the 2 bits in multiple passes but more bits are better

[olive brook]

https://stackoverflow.com/questions/70066361/unity-hdrp-get-cameras-rthandle-possible

Any idea how ?

I spent 8 hours, but i gave up and asked ...

[fervent tinsel]

@olive brookhave you checked how this repo did it? https://github.com/alelievr/HDRP-Custom-Passes it's not for custom pp passes but same concept should work for custom pp too

could take a look at the blur example

[clever saddle]

Hey,guys.I have a question is there any method for Texture class like the "GetPixels32" in texture 2D?

[olive brook]

thanks! I was kinda looking for a newbie friendly way , but I didn't expected as such.
thanks again. I'll take a look and perhaps my lazy brain figured something :D

@fervent tinselany idea how to open the repository with intellisense ( with F12 goto reference and stuff like that ) enabled ?

[fervent tinsel]

no idea

I mean for me intellisense just works

[sacred patio]

Do I need to add something else to the shader for the gradient in the trail renderer to overlap successfully?

[regal stag]

If you're referring to the Color of the Trail Renderer, I believe it uses vertex colours to pass it in. There's a Vertex Color node.

[sacred patio]

Oh, I see, and do I need to add anything else for the intensity to work?

Interesting, it seems like it's mixing with the original white

[regal stag]

You should be using the A output from the Split for the Alpha port
I'd also Saturate the result of the first Multiply to make sure values stay between 0 and 1. If it's too intense, adjust the value in the middle Multiply.

I'd probably also change the graph type to Unlit in the Graph Settings

[sacred patio]

That's insightful, didn't know of the saturate node
I don't think it changed anything but I noticed that if I used a gradient preset that was with a pimped up intensity from another shader, it works just fine so could it be just the trail renderer being a little wonky not having the option for the intensity?

It also makes the texture a little wonky too

[regal stag]

It doesn't have an intensity option because vertex colours cannot support HDR colour afaik

[sacred patio]

That would make sense if it didn't work from other glowing gradients 🤔 Unless it's just an illusion that they are glowing from the multiplier which is probably highly likely

[regal stag]

Yeah, it's glowing more because of the Multiply by 10.7

[patent plinth]

Speaking of psx1 graphics, I managed to make a shader similar to that some time ago for gamejams.. perhaps even much jankier than the original psx1 😃 .. If you're interested , let me know (see screenshot below)

as for the performance, only god knows 😃

Mine, used a custom lighting for no reason ...I can fix it without custom lighting, if you're interested

[zealous plank]

Is it possible to for a shader to use the mouse's co-ordinates as an input?

[shadow locust]

Yes you'd just have to pass those coordinates into the material from C#

e.g. with https://docs.unity3d.com/ScriptReference/Material.SetVector.html

[final hollow]

shader graph doesn't support compute buffers yet by chance, does it?

[shadow locust]

no 😦

You can pack your data into a Texture instead, but that's a bit janky. And Instance ID is not supported yet for Graphics.DrawMeshInstancedIndirect, so it's all kind of moot anyway

[regal stag]

You can use a StructuredBuffer in SG through a custom function node (file mode).
And for DrawMeshInstancedIndirect, you can hack it in a bit, I did it for a grass shader in v10. https://gist.github.com/Cyanilux/4046e7bf3725b8f64761bf6cf54a16eb

[final hollow]

huh, thats interesting, and also is that your github? Having a quick reference to your gists sounds like a goldmine

[regal stag]

Yeah, only have a few gists and repos though

[final hollow]

so... wait..

but...

so... damn it.

I mean I dont understand, there's a whole section on HDRP in 2021.2 https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@12.0/manual/whats-new-12.html

but there is no HDRP template option, and no template option for "3d with extras" which is what the HDRP guide uses to show how to add HDRP for a project not in the HDRP template

sorry, lol, to make this a shader question -- has anyone successfully used the new tesselation feature of the HDRP shader graph? is it a real thing yet?

[fervent tinsel]

I'm confused... you have issues with the functionality or just asking in general?

it's a real thing

[lapis lodge]

is it possible to pass an array or list in a compute shader? (each thread has a different one)

[shadow locust]

you can use ComputeBuffers or GraphicBuffers.

[lapis lodge]

thanks

[final hollow]

yeah my bad, I was just confused by the documentation seeming to suggest that tesselation was implemented for a version of unity not supported by HDRP

I realize now that I was wrong in several important ways. 1) it is supported, 2) the HDRP wizard takes care of compatibility issues for you and it doesn't matter what template you use, and 3) I realize now that tessellation is not the bottle neck on creating the BotW grass effect, geometry shader are. And that is probably never going to exist in shader graph

I suppose thats the point behind DrawMeshInstancedIndirect business

[solar sinew]

Here: https://github.com/ColinLeung-NiloCat/UnityURP-MobileDrawMeshInstancedIndirectExample

I still don't quite understand the details of his implementation here but it uses DrawMeshInstancedIndirect in clever ways iirc

[coral parcel]

Hey, anyone know how to write a depth mask shader? I'm trying to hide water in a hull. I've already got the mesh ready to put the shader on but all of the tutorials I've found have code that either didn't work or is a prefab for an entire water asset that is pre-downloaded that I'm not using

Shader "Mask/Masked"{
        
    SubShader{
    
        Tags {"Queue" = "Geometry+10"}

        ColorMask 0

        ZWrite on

        Pass{}

    }

}

This is the code I lifted, and it's not really doing much of anything to be honest. Just creates a clear material that doesn't mask the water in the hull

[low lichen]

You probably need to define a vertex and fragment shader for it to appear

This one should work:
https://github.com/doomlaser/DepthMask-Unity-Shader/blob/master/DepthMask.shader

[fossil linden]

Hey has anyone has found a way to use UDIM textures in Unity ?

[unreal gale]

Do procedural generated mesh need UV mapping or some other process to render ShaderGraph materials ?

[weary forge]

@fossil linden You just have to assign different materials to each UDIM set. Then in the engine you apply your textures to those materials. It doesn't directly have a way to support UDIMS on one material

Does anyone know how to setup stencil for opaque HDRP materials?
Seems it works with transparent but I cant get anything to work with opaque. URP works fine though.

[hearty obsidian]

I'm going nuts! I have this on a vertical cylinder with a radius of 0.5. If I don't saturate the output after the one minus, I get values outside of 0-1. How?

Position is the vert's local position

[long granite]

It looks so cool honestly, and ofc im interested! Please dm me/reply to me here with the details

and does it work the same in all fullscreen resolutions?

[cloud orchid]

There's no such thing as a Ctrl+F in the shader graph view right?

To find a node by name

[regal stag]

It should render regardless, but if the shader graph relies on the UVs the result may not be expected. If that's the case, will either need to generate UVs or use alternatives like planar and triplanar mapping.

[regal stag]

Hard to say without knowing the exact Position values, but if the Length results in a value higher than 0.5, then the divide will be larger than 1, and one minus that will be result in a negative value. Perhaps the scale of the model isn't what you expect? Or using the wrong axis?

[regal stag]

Not built-in. You'll have to search the graph manually. I'd recommend creating groups and/or sticky notes to help make it easier to find things in the future.

[hearty obsidian]

This is from a subgraph and Position is just the position node set to object. The scale/axis are OK as far as I can tell. The outcome is also OK as long as I clamp the value 0-1. It still bothers me not to understand where it's going wrong. Inspecting the model shows verts are at a radius of 0.5 as expected.

[south shoal]

Greetings All. I am having some problems applying a material to a imported fbx file (Small Rectangle Shape on the Right) The same material can correctly applied to other primitive shapes when they are created from unity (Cube on the Left).

[patent ivy]

I'm trying to fit textures into a 3D scene and having problems with the UV. View Position UV doesn't work cause of the Z position. Also tried to create a 3D UV but in that case it doesn't match correctly. Any solutions or this ? Can't even find how to search this problem. Thanks 🙂

[glacial berry]

Is there a way to detect when objects of a certain tag are near an object using Shaders or some link of shaders and scripts? I am ideally making this in Shaderlab, but if need be I can make it in Shadergraph

[final hollow]

You could do raycasting, etc in your script, and you could change a property or something in your shader and make the logic respond to that, but it would be pretty clunky unless you really knew what you were doing and spent a lot of time thinking it out

[quartz horizon]

how do i make a material pitch black?

[hearty obsidian]

power node with base -1 returns NaN?

ah nvm : from the docs :

Note: If the input A is negative, the output might be inconsistent or NaN.

Why though?

[vocal narwhal]

Because that's maths. Any non-integer power will involve complex numbers.

[hearty obsidian]

Can you elaborate? What does that have to do with base -1?

Genuinely asking

[vocal narwhal]

x ^ 0.5 is √x
-1 ^ 0.5 is √-1 is i, a complex number.
I'm not very good with maths around this area, but it's something to do with the logarithm of a number only being defined for positive numbers. I can only rationalise it in my head with the example I have written

It's not hard to search for results about it https://math.stackexchange.com/questions/317528/how-do-you-compute-negative-numbers-to-fractional-powers but I still don't find them particularly easy to digest

[hearty obsidian]

@vocal narwhal I assumed you just misread me. I stand corrected. Thanks for the explanation

[olive brook]

Just saying. What if the negative numbers were understood wrong? ...

What if negative*negative=negative , just like positives...

Then the complex numbers were real numbers

Then it would be hella easy to understand fractals ...

[dim yoke]

then it would ruin all basic math... (compared to that, understanding fractals is useless)

[opal kettle]

hello, im working on a mobile game using Splatoon's Ink System https://www.youtube.com/watch?v=FR618z5xEiM&t=71s thanks for Mix & Jam
in Unity it is working fine however after i build for Android and when i try

SceneManage.LoadScene()

or

Destroy()
then 
Instantiate()

i get weird color on the shader

im getting Blue color all arround the object

this is how it look before the reload

[glass sentinel]

can i play it?

@opal kettle

[opal kettle]

sure let me upload the apk

[merry rose]

Hi, I am trying to get Octahedral mapping working but I am getting this very weird result which does not seem very right, has anyone tried it or has any know how of what might be wrong here? thanks

[patent plinth]

Unity shader master stack example has what you're looking for https://github.com/Unity-Technologies/ShaderGraph-MasterStack-Samples/blob/main/Assets/Shaders/Imposters/VectortoOctahedron.shadersubgraph

perhaps you can play around with it

[merry rose]

Thanks @patent plinth , I looked at it, bad thing it gives me same result so now I am even more lost...

[full salmon]

Just a quick question, when I get the normal vector in tangent space in shader graph, I was expecting to get (0,1,0), but I get (0,0,1). Why is this?

[regal stag]

Tangent space is defined based on the tangent (x axis), bi-tangent/normal (y axis) and normal vector (z axis). So the mesh normal vector in tangent space should always be (0,0,1)

[full salmon]

oh I see, so it's like there's a 2d plane on the x and y axes, so the z axis is perpendicular to that plane?

[neon solar]

Why cant i see the edge of the water hitting the ground in game view, but it shows in scene view?

[willow pike]

We're having some trouble getting these cloud shadows to behave naturally. They are showing up under these roof structures that we want to block them. This is using the new URP Decal Projector system. Any way to get this projector to only project onto the first surface it hits?

[regal stag]

It's a 3D space, but if that helps you visualise it, sure

[regal stag]

Looks like the Depth Texture isn't enabled. If it's URP it's on the URP Asset

[regal stag]

Finding it a little hard to see which parts are wrong but perhaps you can mask/combine it with the main light shadows?

[willow pike]

It's admittedly hard to see/show but basically we've been trying some different ways of creating cloud shadows, both with the new URP Decal Projector and with a blit feature (you helped me with that in your Discord 👍 ) But the problem is that the cloud shadows end up getting rendered onto interior surfaces with both methods. In this example they are showing up under the roofs which would be blocking those shadows. We want to be able to have the player go into buildings and houses and be able to see down into them almost like a diorama without the shadows appearing inside buildings or under roofs.

An idea I had that I haven't tested yet would be to create the cloud shadows as a scrolling noise texture that has the exact same parameters only on the outdoor grass and terrain materials. Not sure if that would work.

this kind of shows the issue better, you can see the shadows under the pagoda structures' roofs

[regal stag]

What I said about masking/combining it with the main light shadows makes sense then? Since those interior spaces are already in shadow, it doesn't make sense the cloud shadows cast there too. Like max() of them rather than overlaying like they are currently. Haven't looked into the new URP decal projectors so a little unsure how it works, and unsure if you can still sample the main light shadowmap in that (or inside a blit shader) but could be worth a try.
Rendering the clouds in the terrain/outdoor shaders would definitely still let you access the shadowmap, but may be difficult to add depending on how many outdoor shaders you have. I guess subgraphs make it a bit easier.

[arctic flame]

hey everyone

how do I make built-in MSAA work?

i've tried many different things and seen no effect

i've been googling for days

i just really don't know what to do to make it -work-

yes it's turned on, yes the quality level is selected

[willow pike]

Definitely makes sense in theory. We may want to turn off the roof meshes when the player is inside a house which I think would then have the cloud shadows appear again, although we could just turn off the roof meshes and keep their shadow casters on. Would the way to mask those cloud shadows be to use the MainLightShadows function in your custom lighting package? I guess I could funnel the shader for the cloud shadows through that if it's in shadow just not render anything.

[arctic flame]

yes the camera uses forward rendering and allows MSAA

yes the UI canvas is in the correct render mode for unity 2019+

scene view

game.

[regal stag]

Yeah I was thinking something like that

[arctic flame]

how can this be anti-aliased in scene but not in game?

i don't really understand how that could happen.

ive been searching 'MSAA not working' and i don't really know how much broader i can make it but i'm getting like no results

[neon solar]

Thank you, that solved it 🙂

[wet flicker]

hey I want to display text on a quad that has a material with a custom shader on it. I somehow need to display the text in the shader but I'm not entirely sure how. I was thinking of some kind of procedural text and I found a sample from someone on youtube where it calculates each letter from the uv. but I also heard about using a look up texture which sounds like something that would be more usable, more performant and hopefully more customizable? like perhaps changing the font. but I'm not entirely sure how to use a lookup texture to draw letters and words with my shader

[regal stag]

Afaik MSAA only affects the edges of meshes, not transparent or alpha cutout (it might for alpha to coverage but I'm not that familiar with that), so I could be wrong, but I don't think the scene view is using MSAA for that UI element. It's just being drawn at full texture resolution, while the game view is scaling it down a lot. Assuming it's not an SDF.

If you want it to be less pixelated you probably need the texture to be lower res so it doesn't have to downscale it as much. Texture mipmaps might handle that automatically. Or if it is an SDF, then maybe look into using fwidth in the shader, something similar to this : https://www.ronja-tutorials.com/post/046-fwidth/.
Or could try post processing based anti-aliasing methods, like FXAA or SMAA.

[arctic flame]

in this case, it is an SVGImage, which internally is displayed as a mesh.

here it is, scaled by two

so yes, it's a mesh. it should be getting MSAA.

[regal stag]

Then no idea sorry

[regal stag]

If you need to display text I'd probably just use Text Mesh Pro package

[wet flicker]

how do I display text in my shader using text mesh pro? doesn't that need a physical ui element?

[regal stag]

Doesn't have to be a UI element, there's a 3D mesh-based text too. But yeah, it's a separate GameObject. Is there a reason why you need it in the shader over that?

[wet flicker]

I need it in a shader because it has to display the text on something like a quad and the text will be dynamic and changing so I can't just use a single texture

[regal stag]

TextMeshPro can be dynamic. It uses a similar technique as what you were describing before.

[wet flicker]

in short I'm trying to create a kind of HUD for a game called VRChat but custom UI elements aren't allowed to the next best thing is a screen space shader or a quad with a shader on it. unfortunately there doesn't seem to be much help to get on the official vrchat discord server

but alright it seems like there's more to this task than I first thought. I might have to gather some more information before I can continue

[regal stag]

Ah I see. It looks like VR Chat supports TextMeshPro though, https://docs.vrchat.com/docs/supported-assets

Assuming you're referring to creating worlds I guess.

[wet flicker]

I am actually talking about creating a HUD for an avatar. I have a few things I want to try to create and creating a small HUD with basic info is my first step

or, not so much step. but perhaps more task

[arctic flame]

unity seems totally broken

look at this

so things to note: my UI camera and my main camera are not in any kind of heirarchy of ownership

the UI camera will get MSAA when the Main Camera is using forward rendering (the ui camera already had forward rendering, this didn't work)

i do not know why the main camera is affecting the output of the UI camera

nor do i understand why MSAA turns on in forward mode when the main camera's MSAA flag clearly says OFF

here's the comparison

can someone from unity please explain what is going on

cos this is pretty nonsense at this point

i don't understand what's so unique about the UI camera that gives it this behaviour

except for the name, it's just another camera.

https://answers.unity.com/questions/135427/mixing-deferred-lighting-and-forward-rendering-pat.html this question seems to imply that my current setup should work. The main cam is Deferred, the UI cam is Forward, and the clear flags are Depth Only.

[regal stag]

Probably a quirk of how the camera stacking works.
Maybe MSAA is enabled if any of the cameras enable it. But I guess if Deferred is used the render target is already set to not use MSAA (as it can't support it I think), even if another camera tries to use Forward & MSAA later.

[arctic flame]

this is such a ridiculous blind spot

i can't believe it's existed since 2018

i use FXAA for my game world but the quality of it just absolutely not acceptable for UI

[tight phoenix]

What would be the most performant method to allow the the player to paint a 2D surface space?
There are no 3D meshes (well, just flat camera oriented ones), so I was thinking the easiest way to do this would be a render pass that is applied over-top of the final maincamera scene rendering, but I am not very experienced with Shader code to know how to achieve this.

[vestal imp]

I need a way to make meshes render when the camera enters inside of them.

Is there an easy way to accomplish this with shaders?
Or should I look into making something like mesh slicer (https://assetstore.unity.com/packages/tools/modeling/mesh-slicer-59618) that will cut meshes in real time such that the camera never actually goes inside of them?

I am relatively new to Unity and just wanted to solicit input on what the best approach to this problem is before I invest a lot of time.

[regal stag]

Was trying the cloud masking in a blit and not sure if it's going to work. By masking it out the shadowed side of the cylinder appears lighter (though it's not, the rest is just in the "shadow" of the projected noise)

[willow pike]

Was just sitting down to try this, I actually couldn't even get this far. Wasn't sure where to feed in the main light shadows function to the blit since it's not in world space. That's odd that the cylinder would look unshadowed there.

Rather than creating a mask couldn't you clamp the darkness of the cloud shadow so it never "darkens" a shadowed area?

[regal stag]

Well, that's what it's already doing. But the cloud shadows are darkening the cylinder, just not the part that was already in shadow, so it appears lighter

[wet flicker]

okay so I want to create a zoom shader that will show the world behind but zoomed in. so like if you're inside a sphere and look then the world should look zoomed in

tbh I'm already stuck on just sampling the original color behind the sphere so I'm not really sure how to do this

[regal stag]

And yeah, I'm reconstructing the world pos from the depth buffer. Using that to sample the Main Light Shadows and transforming it with the light matrix to project the noise for the clouds.

[regal stag]

If it's the built-in pipeline, you'll want to look into GrabPass. Though zooming in on that might look low-res.

[wet flicker]

I think the colors are inverted or something. I used this:
https://docs.unity3d.com/Manual/SL-GrabPass.html

wait what

nvm

[regal stag]

That's what the example on that page does

[wet flicker]

why is the example inverted lol

eh fair enough

guess it was just a simple 1-color

[regal stag]

To show it working. Otherwise you wouldn't be able to see any difference

[wet flicker]

true

thx

[willow pike]

Gotcha, hmm I wonder if there's another way to go about these cloud shadows that's simpler. They are such an important part of the look for our game but having them appear in shadows is definitely not right 🤔

Casting actual shadows isn't a good route unless there is a way to change their transparency. I'm guessing that's not easy to do? We want to be able to create an overcast feel without using the full intensity of the "true shadows" strength.

[wet flicker]

but do you have any idea of how I would use it to create a zoom in effect?

[regal stag]

Yeah, actual shadow casting doesn't support partial transparency. (Well, it can change the strength of the whole shadow but that's not the same thing)

[regal stag]

I know you'd need to alter the UVs used to sample the texture but not sure on the exact method atm. Note if you zoom in too much it's likely to look lower res though since the scene has already been rendered. But the only alternative would be using another camera.

[hearty obsidian]

I have this curve I use to build the icing around my cake. It just samples the curve at the y position and then determines the proper color. I was wondering if there is an existing technique I could use to make the icing pop out sort of like it had a well contoured normal map?

[wind helm]

hi

maybe i have a wrong node in my shadergraph.. but im having this issue while trying to use a cylindrical cubemap

while the cubic one works fine

can anyone help me?

[tender herald]

Hello, when I decrease the alpha of my semi-transparent plane, the alpha of the fog on this plane also decreased. How can I make the alpha of the fog don't decrease ?

[meager mulch]

Newbie question - I have lots of very basic 2d textures on meshes (no transparency, no lighting etc). Is there a way to disable transparency on them? I use just the "sprites/default" shader, but even that causes some Render.TransparentGeometry usage. If I could make Unity use Render.OpaqueGeometry instead it would be faster. But I have no idea how to do that.

[shadow locust]

what kind of mesh are we talking about? Why use a sprite shader?

[meager mulch]

I want to draw a texture on them. What should I use instead? I tried using "unlit/texture" but the object just disappears completely if I use that one. Some shaders in the "UI" category worked but they also use transparency.

Oh and the mesh is just a simple random 2d shape, like a few points generated by script

[shadow locust]

And you are using MeshRenderer, or something else?

[meager mulch]

Yep! (I'm not aware of any other things I could use for procedurally created meshes)

[shadow locust]

then yeah, you'd use a normal unlit shader, appropriate to the render pipeline you're using

sprite shaders are intended to be used with SpriteRenderer

if you tried that and it's not rendering, you might have messed up something with your mesh. For example you might have formed the triangles backwards

[meager mulch]

Hmm, okay, that's something I can investigate. Thanks a lot for the tip!

Yeah the Unlit/Texture shader currently just displays nothing at all

[shadow locust]

Try looking at your mesh from behind

e.g. look behind it in scene view or rotate the object

if you can see it from behind, then you know it's an issue with your mesh/normals being inverted

[meager mulch]

Oh wow, haha. I moved the camera all around the object in 3d space and got nothing so I already kinda ruled that out – but when I changed the rotation value of the object, well there it is now!

Couldn't have figured this out on my own, thanks again

[merry rose]

ummm, empty lit shader graph, is there a way to lower variants count?

[hearty obsidian]

I have this curve I use to build the icing around my cake. It just samples the curve at the y position and then determines the proper color. I was wondering if there is an existing technique I could use to make the icing pop out sort of like it had a well contoured normal map?

[shadow locust]

Are you using shader graph?

[hearty obsidian]

@shadow locust yes sir

[shadow locust]

You should be able to manipulate thee normal in the fragment stage

that's how bump mapping works

so something like - change the normal around the edge of where the frosting meets the cake

like have it point orthogonal to the edge around the edge, as it would if there was a blob of frosting there

[hearty obsidian]

@shadow locust Investigating... Thank you!

[patent plinth]

Hi, I did exactly this for my terrain shader to copy Zelda's Wind Waker terrain style via shader code, basically you can copy the top parts twice and make the color less opaque than the top/the original based on this guy's awesome tips @regal stag couple of days ago, not sure how you'd do it in shadergraph tho

but there's still issues on my part, on certain surfaces, that are not entirely flat, sometimes its a bit messy... If you found a solution to this, I'd like to know as well

[opal kettle]

any idea why this happen on mobile ?

[fervent tinsel]

@merry rose are you still on 2021.2 beta? They improved the urp shader stripper little before the release

[merry rose]

@fervent tinsel I am on 2021.2.3f1, wanted to use lit shader as my base for raytracing shaders, but it literally never compiled/stripped, over hour of stripping and it just got stuck.

[merry rose]

never mind, copied the Lit from URP, that works better 😄

right side Raytraced, gotta add more to it

[merry rose]

Any idea how to Trace new Ray in raytracing subShader Pass? I am going by the official DXR tutorial but this Crashed my editor. Also where should I put the other closehit and miss shaders? putting in same Pass breaks it and putting it in different pass throws Unsupported shader type...

[cinder chasm]

Hey y'all, anyone know how to expose Surface Options (opaque/transparent etc.) in a graph like the default SRP Lit and Unlit shaders do?

[wet flicker]

so this shader shows the color of the stuff behind the object so a sphere with the shader will show stuff behind it. but I want it to zoom in on the stuff behind. how can I do that?

[low lichen]

You have to change a couple of things in the shader, like the blend mode and ztest and also the render queue on the material

[cinder chasm]

The included URP shaders do it from a single dropdown - is this behaviour that unity has written not available for custom shader graphs?

[low lichen]

You have to write a custom shader inspector/editor that does this.

[dry shadow]

after 48 hours, finally managed to edit the curved shader code. finally can rest

yay 😄

[regal stag]

There should be an option to do this now in 2021.2 for URP

[cinder chasm]

Ah, sadly we're stuck on URP 8.0 in 2020.1.10f1 lol

Thanks for letting me know though

[keen edge]

are shaders hard to learn?

[fervent tinsel]

@cinder chasmyeah what Cyan wrote is true, there is "Allow Material Override" option on SG 12+ (2021.2+), it adds these to your material:

I'm curious, what makes one stick with a TECH release for longer time period? would assume people would at least move to last release of the year to get the updates coming

@keen edgedepends on your experience with coding I suppose. There are learning materials pinned to this channel

[cinder chasm]

Haha this is mentioned literally every time I post in this discord, it's endlessly hilarious to me because every programmer on the team is bitching about this 24/7

[fervent tinsel]

shaders are basically math.. so if you like math, you'll do just fine

@cinder chasm yeah I can imagine, just wondering what drives people sticking with a release that even Unity doesn't support

[cinder chasm]

Basically our educational institution has 2020.1.10f1 on all their PCs for god knows what reason so we're required to use that version, despite it being incredibly irresponsible to develop on non-LTS versions nearly 2 years out of date

[fervent tinsel]

ah, that sucks 😄

but yeah I can understand that

[cinder chasm]

Yeeeep. Also the fact that I've got almost 60GB worth of Unity on my PC from the two installs lol

We've encountered several severe bugs which have been fixed in either later versions or LTS versions

[merry rose]

no idea, for my work they are not even using final or LTS, version of 2019 and its pain, but they do not wanna move caus it could mean tons of errors, sheeez

[fervent tinsel]

there are some Unity versions where it does make sense... like many stuck with 2019.2 (?) or whatever was the version before they merged nested prefabs.. that change broke a ton of projects

but being stuck with 2020.1.10f1 sounds like a nightmare... that just at the point where Unity broke all working stuff but haven't gotten functional replacements done proper

[merry rose]

uff yeah, I try always update project upwards so I stay in stable/newest feature set

[fervent tinsel]

anyway to get back to the point, backporting the material override change in shader graph isn't feasible since Unity changed how SG works in SG 9

I'd just make extra SGs and live with it tbh

[unreal gale]

Hi, I have a radial gradient shader that I made with ShaderGraph, and I use it to render a field of view, which is a generated mesh.

Sometimes when edging with objects but continuing further, the shader will show the mesh with a cut, rather than the fade it shows at the edges of the FoV's circle. Is there a way to make the shader to show the same fade if we are on any edge of the mesh ?

[fervent tinsel]

you can still embed most of the custom functionality inside a subgraph so the SG variants will not all be duplicated code

[unreal gale]

Here is the shader I made

[cinder chasm]

This version in particular is the twilight zone of broken unity versions. 2020.1 has no LTS and thus the entire quarter is thoroughly neglected. Hell, even today the UIBuilder package just straight up throws a compile error because 2020.1 doesn't support null-coalescing operators and the pragma #if only includes <2019.4 and >2020.2 (when ??= was supported in Unity)

[lusty badger]

Does the DepthOffset in HDRP work with transparent materials?

[timber moon]

Anyone here able to help with shaderforge?

[dim yoke]

I guess no one is going to commit to something they don't know what it is yet. you can just ask your guestion and someone helps if they can

[timber moon]

Well its an extension to make shaders, i want to make shaders for polybrush

So i can paint a mesh terrain

[fervent tinsel]

like mentioned by Aleksi, better just ask the question if you are having trouble with it

[dusk cobalt]

Anyone got idea how to convert this old shader to URP? 🙂

[unreal gale]

you already tried upgrading your project's materials in Edit-> render pipeline -> URP -> upgrade project material ?

don't know of any other way to convert if it fails unfortunately

[regal stag]

I don't think there's a direct equivalent, but you can swap the shader out for one under the "Universal Render Pipeline/Particles" heading

[dusk cobalt]

yes

[steel notch]

How exactly would you get this intersection data from something like shader graph?

[glacial berry]

How can I pass an array into a shader in Shaderlab via a script?

[clear vector]

Is there a way to check if shader's property is instanced or not through Material.shader?

[glacial berry]

Is there a place I can learn HLSL programming easily that is not scouring the Microsoft docs?

[olive brook]

Look up in YouTube. If you're particularly interested in unity, you'll find a handful nice tutorials. I'd give you links, but my internet is so slow and it's 11:50pm here so I don't have the energy for that

[olive brook]

If you set colliders, you'll get exact contact points in an OnCollisionStay or other collision functions. Then simply pass the data to the shader

[grand jolt]

How would I recreate fog like this?

I can't tell if it's fog cards with a scrolling noise or a particle system.

[rich echo]

Well, if you are talking about simple primitive shapes like that, you could try using SDF's

complex shapes like animated characters would be require other hacky solutions

[unkempt anvil]

I followed and adapted a bit this tutorial (www.youtube.com/watch?v=X4QczDYu2ao) to create the fire shader and I'm trying to pixelate it with this graph but I don't know what to do with that divide... Could someone help me with that ?

[unkempt anvil]

Here's the full shader if it helps 🙂

[glacial berry]

First place I would try is the Tiling and Offset for your simple noise

if that doesn't work, I am not entirely sure where to go next

[unkempt anvil]

Oh, didn't see that one... I tried the other Tiling and Offset in the middle group... Thanks !

[shadow locust]

It's probably getting clipped

Check your distance and the camera's near clipping plane settings

[timber moon]

Anyone here have any expereince with polybrush shaders?

some of my textures come out black

some of them show up as other textures

[timber moon]

fffff

[wraith dagger]

Hello! Resurrecting this message from Feb 2020 to see if anyone has figured out how to pass markers that nsight sees?

[fervent tinsel]

just curious, what kind of markers are you after?

I mean nsight frame profiler can tell your own systems total cost and label them properly if you test your game with development build

@wraith dagger

you'd mainly need markers to be able to get more detailed cost inside the system

also do note that from 2021.2 onwards you can use this API inside Unity to profile gpu cost https://docs.unity3d.com/2021.2/Documentation/ScriptReference/Unity.Profiling.ProfilerRecorderOptions.GpuRecorder.html

[wraith dagger]

Ah, thank you for replying!

To be honest I don't really have any idea what I'm doing with nsight.

I have a ton of compute kernels that I'm dispatching and I want to be able to look at an individual dispatch and see, what kind of things I can improve.

Right now it seems like everything is lumped together, so I can't really tell what is from what dispatch.

[fervent tinsel]

ah, I have no idea how one should analyze computer shaders :/

[wraith dagger]

Yeah I should probably be using CUDA haha. The tooling is much more advanced there. I can see timings in RenderDoc, but I want to see details like occupancy and memory access stats.

[meager pelican]

If you want that, yeah, use the vendor tools. IMO

[meager pelican]

Could/might be volumetric fog too.

[grand jolt]

No, this game came out on Xbox 360 bruv.

I managed to put my camera a certain way to expose that these are camera aligned flying billboards.

The questions is in what pattern are they flying now.

The game is Alan Wake btw.

[meager pelican]

<goes searching for video, wants to see in action>
Nice light ray fakes too.

[grand jolt]

Yeah, and lens flares.

I want it all 👀

[meager pelican]

lol.
Hmmm....
Looks like it might be a mix of techniques:
As you may have heard, the X360 version of Alan Wake ran with a mix of 960×544 and 1280×720, while some features like fog particles were rendered in half resolution. Moreover, the X360 version featured a “smart vsync” where Vsync was set to on if the frame rate was above 30, and off if it was below 30. PC will feature an option to either enable or disable VSync and will not feature that “smart vsync” and all features will be rendered in full resolution.
https://www.dsogaming.com/news/alan-wake-graphical-differences-between-the-pc-and-the-x360-settings/

And still more discussion:
http://imagequalitymatters.blogspot.com/2010/05/tech-analysis-alan-wake.html

IMO, I'd consider low-res volumetrics these days. If at all possible. I mean the original Windows version ran on XP with Win 7 recommended. lol. But these days we have more clout available.

^^ And that last link implies that they did do low-res volumetrics.

[grand jolt]

@meager pelican but HDRP volumetrics on low look like shit and perform like shit too 🥲

[meager pelican]

¯_(ツ)_/¯
They're using their own engine. And their own custom lighting shaders. IDK if you can fake it in HDRP, but if you do, you'd basically be bypassing the stock stuff I'd guess. IDK much about HDRP.

[grand jolt]

I guess I could experiment with HDRP volumetrics and if it doesn't work try third party volumetrics on URP.

But like ehhh, I like HDRP shadows.

Btw, have you seen Farewell North?

Good thing someone is actually making a game about restoring colors to the world 😛

[fervent tinsel]

@grand jolt HDRP volumetrics got nice perf improvement few versions back so definitely at least try it on some newer version

can't remember the point specifically, HDRP 10 might already have those fixes

[grand jolt]

I get 100 FPS in build on my HDRP project with hundreds of lights, will see if volumetrics will make it commit die.

[fervent tinsel]

https://github.com/Unity-Technologies/Graphics/pull/2272

this got added year ago

ah, changelog indicated it made it to HDRP 10.2.0

"With this change, the area of the template that looked the worse perf wise went from 8.3 ms down to 2.3 ms so close to 4x speed. "

[unreal gale]

Hi, I have been looking around, without much success, for a way to make a fade effect shader at the edges of an irregular mesh using shadergraph, like a runtime rendered field of view.

for example here the interior edges are still hard, as I am only using a radial gradient shader.

I found this https://forum.unity.com/threads/is-it-possible-to-smooth-stencil-mask-edges-sight-of-view.523552/ which is exactly my use case, but they are coding their shaders directly rather than through shader graph, and am having trouble understanding it all

[alpine tusk]

alpha isn't working it seems. material is set to transparent, blend to alpha.

[strong oriole]

Can someone point me to resources on how to have my Terrain object use textures based on normals and height?

[dark hull]

Some one has a Genshin Impact Style Shader?

[tame topaz]

There are some popular anime style shaders on the store.

[strong oriole]

Is there a reason the example rim surface shader won't work in the URP pipeline? ```HLSL
Shader "Example/Rim" {
Properties {
_MainTex ("Texture", 2D) = "white" {}
_BumpMap ("Bumpmap", 2D) = "bump" {}
_RimColor ("Rim Color", Color) = (0.26,0.19,0.16,0.0)
_RimPower ("Rim Power", Range(0.5,8.0)) = 3.0
}
SubShader {
Tags { "RenderType" = "Opaque" }
CGPROGRAM
#pragma surface surf Lambert
struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
float3 viewDir;
};
sampler2D _MainTex;
sampler2D _BumpMap;
float4 _RimColor;
float _RimPower;
void surf (Input IN, inout SurfaceOutput o) {
o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));
half rim = 1.0 - saturate(dot (normalize(IN.viewDir), o.Normal));
o.Emission = _RimColor.rgb * pow (rim, _RimPower);
}
ENDCG
}
Fallback "Diffuse"
}

[merry rose]

use HLSLPROGRAM instead of CG, with that some of the values might change, for more info check URPs documentationhttps://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@13.1/manual/writing-shaders-urp-basic-unlit-structure.html

[strong oriole]

@merry rose Thank you.

Is it impossible to write shaders for Terrains? I've been trying to get just basic shaders work, but as soon as I add a heightmap the render goes crazy.

[merry rose]

Well using Instanced terrain shader needs special shader to actually position the vertices to correct world space positions, otherwise Unity does not have clear way or official tutorial on creating custom Shaders, Shader Graph support should be coming but its not even in experimental yet.

Probably copy the official terrain shader and try to modify it and see how it works and work from there.

[strong oriole]

@merry rose okay, thank you very much again. Copying the official one will likely teach me a lot too.

[strong oriole]

So the only way to create the image at the top fo this link is to hand paint it? The shader won't blend textures like that based on normals and heights? https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@13.1/manual/shader-terrain-lit.html?q=terrain shader

[steel notch]

When I turn off the current, front most mesh, this is what happens.

This is what I want, but I also want to be able to add further transparent objects inside this structure who also have this "blocking" behaviour.

So it's sorta like... transparent objects in a "group" are opaque against each other, but not anything outside the group.
If that makes sense.

[hearty obsidian]

I'm building a runner with depth fog on the Z axis. The fog is just a plane perpendicular to the camera where scene depth is sampled to determine how thick the fog should be.

I have semi transparent gates and they're wreaking havoc on my setup. If I use a render pass to write the semi transparent gates to the depth buffer, everything behind the gates ends up being visible/unaffected by the fog. If I don't and leave them as be, the fog ends up being too thick since it's unaware of the gates.

Is there a way to solve this?

[grand jolt]

You have 255 stencil values to set up any blocking behaviour you want if you are using a forward renderer.

[steel notch]

Uuuh do you mind elaborating? A bit new to the shader/computer graphic space.

[grand jolt]

Stencils are basically a bitmask in screenspace you get for free.

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

And your shader can declare which bits it wants to write, what to write, which bits and what value should be in the stencil for pixels to not be rejected...

At least I think you can.

[steel notch]

alright I'll take a look

[strong oriole]

The roadmap has a lot more features for HDRP than URP. Is HDRP just better supported?

[glacial berry]

HDRP is meant to be their fancy advanced thing, so I think they are probably shoving more into it in order to get more people to use the high-tech stuff

[exotic kraken]

Does "render target" mean the same thing as "render texture"?

[wraith inlet]

I think (not an expert here) that a render texture is one possible render target, but they are not the same thing. Render target is the place you are rendering to, while a render texture is a texture set up to act as a render target. Hopefully someone with more detailed knowledge will correct me.

[white bramble]

I have no idea what Im doing with unity, and a lot of the tutorials Ive found seem to leave out something or just have you download it
anyone know a good tutorial for grass from scratch? trying to get something like breath of the wild

[wraith inlet]

I haven't used the grass tutorial specifically, but I like the tutorials on this blog: https://roystan.net/articles/grass-shader.html

[white bramble]

ah yeah that
I had tried using this tutorial (https://www.youtube.com/watch?v=MeyW_aYE82s ) which builds off of it but I got confused right in the beginning with him opening the subshader as Im not sure where it is or if Im just meant to compile the unlit shader in visual studio or what

I wasnt seeing the answer in the comments either

[wraith inlet]

when he says "we'll start off with an unlit shader file", he's right clicking in Assets and going Create > Shader > Unlit

then he deletes most of the contents of that file

[white bramble]

yeah I did that

[white bramble]

so did he just open it in visual studio then? I wasnt sure because last time I did that it said something about it not being a proper shader file when I opened the code

[wraith inlet]

yeah, just open in your preferred text editor

[white bramble]

I dont know what it was but it looks normal now, thanks

[wraith inlet]

np

[white bramble]

the grass in this tutorial definitely seems more lush than in the other ones

[white bramble]

Im saving grass for a later time 🥲

[devout linden]

when i turned surface type to "transparent" ...this... happened

any help?
also i hope this is the right channel

[fervent tinsel]

you are now asking people to first figure out what you think is wrong in the image

maybe post before image too

I can tell there's things missing but 90% of times people post something like "how do I fix this" and post just image without explaining what they think is off, ends up with person asking about totally different thing that others assume

[devout linden]

oh yep

sorry

one sec

this is it set to "opaque"

it does a weird backface-culling sort of thing

but the normals are correct, i checked

[next saffron]

try with double sided ?

[devout linden]

i did

same thing

[next saffron]

oh

maybe directly change the render queue 🤔

[devout linden]

how do i do that

i'm new to unity, sorry

[next saffron]

oh cool !

maybe i can help you

[devout linden]

oooh

go on, go on

[next saffron]

wait wait xD

loading

[dim yoke]

That is called transparency sorting issue which is almost impossible to prevent with decent amount of overhead. why you need to have transparent material?

[devout linden]

because i need to make some objects transparent-plasticy and fake-volumetricy
and im not adding 100 vertices to make the microwave glass look

[next saffron]

maybe change the depth test

try

[dim yoke]

that won't work either

[next saffron]

🤔

[next saffron]

oops

[next saffron]

and that ?

[dim yoke]

transparent objects doesn't write to depth buffer

well you can sort them by hand but it's most likely not perfect either

[next saffron]

so what is the solution ?

[dim yoke]

there's no, there's few hacky approximations but they are not perfect

[next saffron]

i don't meet this problem earlier... that's weird :(

[devout linden]

i also cant find those settings, maybe because im in urp

[next saffron]

i'm in too

[devout linden]

hmm

[next saffron]

by deafault it looks lik that

click on auto and change the mode

[dim yoke]

@devout linden so could you tell very clearly why you need to have every object transparent? For example the table and wall absolutely doesn't need to be transparent

[next saffron]

a transparent material is needed when you can saw other game object trough them, but, is that the table is made of glass ? x)

[devout linden]

all im making transparent is some stylized sun rays, the microwave window pattern, and some plastic containers

those are the only things that i set to have transparency in the alpha mask i used

but for some reason, EVERYTHING is transparent

[next saffron]

mmm

[dim yoke]

are you using same shader for both transparent and opaque materials?

[next saffron]

do you use the shader graph ?

[devout linden]

yeah

because im new to unity and dont know how to add multiple materials to one mesh

[next saffron]

that's the problem i think

[next saffron]

drag an drop on the mesh :)

[devout linden]

oh okay

[devout linden]

whats that

[next saffron]

it's a for create custom shader with visual like this

but if you don't that's ok

[devout linden]

oooo me likey

no, i just use materials

[next saffron]

ok

do you duplicate the material now ?

[devout linden]

what do you mean

(man i'm asking so many what questions)

[next saffron]

don't worry :)

[next saffron]

.

[devout linden]

heh yeah

[devout linden]

but what do i duplicate for

[next saffron]

the material

duplicate it and change one and set the transparency mode to opaque

and applicate it on the opaque object

(if you use an alpha mask)

[devout linden]

oh okay

its just that some of the transparent bits are on a different part of the same object

how do i do that

[next saffron]

O.o

so you use a alpha mask ?

[devout linden]

yeah

[next saffron]

(sorry if i'm confusing you my english level is... bad xD)

[next saffron]

i'm sorry but i don't know the solution :(

[devout linden]

oh ok

ill google it

[next saffron]

look in unity forum ?

[devout linden]

ok

[next saffron]

i think that can help u

https://answers.unity.com/questions/609021/how-to-fix-transparent-rendering-problem.html

[dim yoke]

if you're interested in those solutions, you could check this one out (there's also link to their github page) https://forum.unity.com/threads/approximated-order-independent-transparency.327299/?_ga=2.242510155.870529933.1638093077-75641178.1573666367 . easier solution would be to use dithering transparency but ig that's not as good looking effect (on some art styles it may look better actually) https://forum.unity.com/threads/dithering-transparency-of-opaque-object-dithering-received-shadow-and-rendering-shadows-behind-it.897848/

[next saffron]

ok thx i'll check it ^^

[smoky spire]

Hey I have these two functions in my shader right now

                hue = frac(hue); //only use fractional part of hue, making it loop

                float r = abs(hue * 6 - 3) - 1; //red
                float g = 2 - abs(hue * 6 - 2); //green
                float b = 2 - abs(hue * 6 - 4); //blue
                float3 rgb = float3(r, g, b); //combine components
                rgb = saturate(rgb); //clamp between 0 and 1
                return rgb;
            }


            float3 hsv_to_rgb(float3 HSV)
            {
                    float3 RGB = HSV.z;
                    float hue = frac(HSV.x);
                        float var_h = hue * 6;
                        float var_i = floor(var_h);   // Or ... var_i = floor( var_h )
                        float var_1 = HSV.z * (1.0 - HSV.y);
                        float var_2 = HSV.z * (1.0 - HSV.y * (var_h - var_i));
                        float var_3 = HSV.z * (1.0 - HSV.y * (1 - (var_h - var_i)));
                        if (var_i == 0) { RGB = float3(HSV.z, var_3, var_1); }
                        else if (var_i == 1) { RGB = float3(var_2, HSV.z, var_1); }
                        else if (var_i == 2) { RGB = float3(var_1, HSV.z, var_3); }
                        else if (var_i == 3) { RGB = float3(var_1, var_2, HSV.z); }
                        else if (var_i == 4) { RGB = float3(var_3, var_1, HSV.z); }
                        else { RGB = float3(HSV.z, var_1, var_2); }

                return (RGB);
            }

            struct Input {
                float2 uv_MainTex;
            };

            float _HueShift;

            void surf(Input IN, inout SurfaceOutput o)
            {
                float3 hsv = float3(_HueShift, IN.uv_MainTex.x, IN.uv_MainTex.y);
                if (hsv.x > 1.0) { hsv.x -= 1.0; }
                o.Albedo = half3(hue2rgb(IN.uv_MainTex.y));
            }```

they work fine, and produce a result like this

I need to change the first hue2rgb function to not loop

I want it to be red on the bottom and pink on the top, so the 0-1 values match the other hsv conversion

the first image is the hsv_to_rgb function with a hueshift of 0.0 and the second is with a shift of 1.0

actually I have them in different shaders, the one for the big square has this

        {
            float3 hsv = float3(_HueShift, IN.uv_MainTex.x, IN.uv_MainTex.y);
            if (hsv.x > 1.0) { hsv.x -= 1.0; }
            o.Albedo = half3(hsv_to_rgb(hsv));
        }```

[paper edge]

guys https://www.youtube.com/watch?v=eSHM45ogT7g I'm trying tto follow this tutorial to create a neon outline for a prefab I have for a character, but when I try to go on create node>input>texture>texture 2D asset, I can't put a prefab there (and yes, the game and animations are in 2D), but I'd like to know if I could simply add a prefab instead of only one texture

its my first time using render pipeline

can someone plz help me? =< The other tutorials I find are to add glow, but I don't want to "just add glow" to a whole object, I just want the glowing outlines

[tame topaz]

You need to use a texture, as the node suggests. You can't put in a GameObject (prefab).

[paper edge]

this means I would have to add dall the textures the prefab is using for the animations? @tame topaz

[tame topaz]

You'd likely have to change the texture property of the material at runtime yes.

[paper edge]

last question, can I pick more than one of what I put in the default? or do I need to recreate it for each png with the animations?

[smoky spire]

with the way it's setup you can only enter one in the default

you'd have to change it to an array, and then change the way the function is piccking the the default to make it have more than one option

[paper edge]

idk how to do it, imma go have to check it out

[blissful atlas]

does anyone know why a URP compatible shader might go completely invisible/not render in URP 2D?

there's no lighting involved, completely unlit shader, works fine in URP, but as soon as I add the 2D renderer asset, it disappears, not even rendering in the frame debugger

[regal stag]

If the shader uses "LightMode"="Universal2D" does that change anything maybe? (I think no lightmode / SRPDefaultUnlit should still render too though)

[verbal jewel]

hey, I want to put a simple radial blur on my game, anyone has an idea on how to do so?

on a static camera, could as well even be a image or something

[dim yoke]

I don't know the asnwer but i'm just wondering why are you using surface shader for that? wouldn't simple vertex/fragment shader be better since they doesn't seems to be affected by lighting?

[smoky spire]

I'm just in the testing phase right now

I'm trying to create a custom color picker

right now I want to have a shader that makes the color selection based on saturation and value

and another picker for the hue

[dim yoke]

well, I did my own color picker few months ago so I'd be able to tell my approach

[blissful atlas]

hm, light mode is UniversalForward

[smoky spire]

the SV square will change based on what the H slider picks

I'd be interested to hear it

[regal stag]

I think that one will only render in the Forward/Universal Renderer then. You'd need another with "Universal2D", or if they are both unlit could use no lightmode or SRPDefaultUnlit instead (which should render in both renderers).

[blissful atlas]

yeah they're all unlit

and yeah, SRPDefaultUnlit seems to make it work ;-; thank you so much. do you know if that light mode works all the way back to 2018.x or was it introduced later?

[smoky spire]

absolutely that would be wonderful

[dim yoke]

I made it bit different way but let me open my unity so I can show it

[regal stag]

I think it's always existed so should work even in 2018.x

[blissful atlas]

gotcha, thanks a ton

oh but URP 2D doesn't support renderer features?

oh no

seems like it was added as of 2021.2.0a16?

according to a forum post

[regal stag]

Ah yeah

[dim yoke]

Oh wow, the quality of the gif is horrible (quite interesting actually)... anyways this is what my picker looks

[blissful atlas]

.gif struggles~ 256 color limitation hits hard

[dim yoke]

yeah, on the other file sizes are very small

[smoky spire]

and what was your approach?

[regal stag]

I did have a workaround for enqueuing render features for the 2D renderer, I just can't remember exactly how I did it now. I'll see if I can find it

[dim yoke]

so first of all, this circle (yes my hand is very stable) is made using simple texture because it never changes

[smoky spire]

the drastic change in color quality is fun

poor gif

you were great at one point

[dim yoke]

I actually made the texture in unity and then used Texture2D.EncodeToPNG to move it into image manipulation program

[blissful atlas]

you might want to turn off compression if you're using it for picking tho!

I'd probably do the entire gradient in the shader itself, it would guarantee things to look crisp and clean without textures

[smoky spire]

yea, that's what I was trying to do

[dim yoke]

yeah, That's what I first thought but I wanna keep this as fast as possible since i'm currently working on potato laptop

[blissful atlas]

valid

[smoky spire]

I just couldn't figure out the math to change the gradient of hue to go from red at 0.0 to pink at 1.0 in the same way between my two functions that changes HSV to RG

RGB*

[regal stag]

Found it, A while ago I used this to Enqueue a Blit render pass, which worked even for the 2D renderer. I can't guarantee it'll always work but might be something to look into : #archived-shaders message

[blissful atlas]

thanks! I'll probably just default to asking people to use the render feature compatible unity version tho. I have enough rendering edge cases to deal with ;-;

[dim yoke]

@smoky spire and this square is just two lerps. first lerp from white to fully saturated color using the x coordinate (on right up corner, the color is calculated in c# script and then send into shader in rgb format) and then lerp from black to the color calculated above using the y coordinate. that way I don't need any HSV/RGB conversions and it's pretty fast.

that's actually exactly how the saturation and value works

[coarse thicket]

this is a model i made in blender (where the gun is pointing towards left), but when i import it in unity it becomes somehting like this. How do i correct this?

[dim yoke]

this is simply the shader code for the square

[smoky spire]

that's helpful

[dim yoke]

why should red be 0.0 and pink 1.0? how you then pick colors between red and pink?

[smoky spire]

it's just how one of the two functions I posted works, I found both of these in different threads

[blissful atlas]

this might be helpful! my code for a quick and easy way to get the fully saturated color, given a hue value between 0 and 1

float3 HueToRGB( float hue ){
  return saturate(3.0*abs(1.0-2.0*frac(hue+float3(0.0,-1.0/3.0,1.0/3.0)))-1);
}```

[smoky spire]

I'll give you an example real fast

[blissful atlas]

and so then the center square is effectively:

return lerp(float3(1,1,1), HueToRGB(_Hue), uv.x)*uv.y;```

[dim yoke]

yup, that's pretty clean. i'm afraid of using branching in shader code (especially on my potato laptop) even if it's not that bad nowadays

[blissful atlas]

there's no branching in this code! so it should be totally fine

[dim yoke]

yeah (I meant the code wystem showed above)

[blissful atlas]

ah gotcha

oh yeah that code has lots of branching, haha

[meager pelican]

branching is still to be avoided if possible. 2cents.
But it's "more OK", particularly with uniforms, than Reddit would make you think. 😉

[blissful atlas]

it's very ok with uniforms!

it's mostly about how much your condition diverges across each cluster of threads (warps, I think? I forget the technical term), so if it's a uniform it's super cheap

but if you branch on a noise texture you have the worst case

[smoky spire]

that's how my main renders from 0.0-1.0

that's why I said red to pink

specifically the hsv_to_rgb() function with the hueshift going from 0 to 1

[blissful atlas]

if that's the output then that function is incorrect

try using mine and see how it works!

[hearty obsidian]

I'm building a runner with depth fog on the Z axis. The fog is just a plane perpendicular to the camera where scene depth is sampled to determine how thick the fog should be.

I have semi transparent gates and they're wreaking havoc on my setup. If I use a render pass to write the semi transparent gates to the depth buffer, everything behind the gates ends up being visible/unaffected by the fog. If I don't and leave them as be, the fog ends up being too thick since it's unaware of the gates.

Is there a way to solve this?

[blissful atlas]

the best way would be to implement the fog in the shaders themselves, rather than as a post processing-style plane

gives you a lot more control over how it looks, and then there's no issue dealing with transparent objects

or any other blend mode for that matter

[smoky spire]

could you help me understand this part

[blissful atlas]

what part of it?

[smoky spire]

the whole part of it

[blissful atlas]

it says "blend the color towards white on the left side, then, multiply it so that it darkens the closer to the bottom it is"

uv.x and uv.y here is the coordinates on a quad mesh, uv.x represents saturation, uv.y represents value

so if you just want a color from hsv to rgb, you can do this:

return lerp(float3(1,1,1), HueToRGB(_Hue), _Saturation)*_Value;```

[tranquil fern]

Is there a way to dissolve using shader graph? I don't mean dissolve like the bazillion tutorials out there. I mean like tiny triangles or splinters or... A different shape. Something that looks like it was made with a particle system. Like pistol whip does when you kill someone. I know I can move using vertex displacement, but I want to "cut it up" into tiny pieces that move outward (the direction of the normal I suppose) and scale down to 0 so they disappear. What am I looking for?

Sorry for the lengthy question.

[hearty obsidian]

@blissful atlas Yeah, I suppose you're right. I have a lot of shaders though and then comes the issues that shaders all need to be unlit so I need to reimplement the lighting for all of them

[blissful atlas]

kinda, but not in any easy way. your mesh has to support this type of fragmentation, which usually means you have to encode normals and/or triangle origin in the mesh data, or, you have to use geometry shaders, which iirc shader graph doesn't support

[meager pelican]

You recall correctly.
They'd be better off swapping out the mesh for a prefab of some effect, possibly having to run the new-fab through skinning of some sort, or generating a set of mesh particles.
IMO.

[tranquil fern]

Can't I just use a relative value? Like an offset. Origin is just object space position isn't it?

[dim yoke]

this is actually really smart way, first I thought this is some sort of approximation for better performance (because usually RGB/HSV conversations requires lots of branching)

[compact ginkgo]

Fix the normals, reverse it

ctrl + i, and go to the mesh window

In edit mode

[tranquil fern]

I don't know what most of that means. But if you mean cut up the actual mess... I've tried that and it is too heavy. I'm building for standalone vr (quest) and it's too much

[smoky spire]

This actually worked out perfect, I replaced both of my other functions with it

[meager pelican]

cut it up before hand, in art/modeling. Swap it out.
Common use case for destructible environment stuff too.

So normally you're using a 500 poly mesh, but when it is "hit" you swap it out for a 5000 poly mesh or whatever.
Or you use particles, but that might be "too heavy" for your use case unless you can pre-calc it.

Often done in rag-doll stuff too...you swap in a rag-doll after positioning it somehow, I've seen tuts.

[blissful atlas]

oh, yeah no, this is a fully accurate hsv evaluation! it's from my old code in shader forge, where I worked out this branchless version. it was very much a fun lil math problem to solve!

[tranquil fern]

I know how it works, but it's too heavy. I tried. That's why I thought (hoped) I could somehow use a shader. I'll figure something out. Thanks.

[meager pelican]

The only way to take a low poly mesh and change it to high-poly is some heavy tricks in a geometry shader or some kind of procedural shader that GENERATES mesh data...which is likely to also be "too heavy" for your use case. But I can't say for sure.

Basically, when you pass the mesh to the vertex stage, you get the 3 verts per poly and that's it. You can't tessellate it manually that I know of (but modern GPU's support hardware tessellation as a feature).
By the time you get to the frag, the rasterization is done, and you're dealing with ONE pixel/textel that you cannot move.

So IDK what magic you want from a shader, but you're not going to generate geometry without a geometry shader and/or procedural geometry.
@tranquil fern

[tranquil fern]

I was thinking something like alpha. Shrinking triangles that are black or white and dictate opacity. I wasn't expecting magic. I was looking for tricks to get a cool effect that runs on what is basically mobile hardware.

[smoky spire]

you mentioned pistol whip

do you mean exploding into particles based on the mesh?

[tranquil fern]

Yes.

Or splinters or whatever shape.

I thought of just having several particle systems on the bones with whatever shape coming out, but it looks... Not nice.

Also I'd like to be able to reverse the effect which is why I thought of shaders. I have a dissolve but I want it to move away from from the mesh. Like particles but not particles. I'd need a lot of particles for that.

I don't know the terminology very well I'm sorry

[smoky spire]

I'd suggest asking over in vfx-and-particles it sounds like that's what you probably need

[meager pelican]

They've already rejected particles as "too heavy" so I'm at a loss.

[smoky spire]

the particle systems can be stopped slowed down and reversed as well

yea anything you would try and do with a shader instead would be way overkill

[tranquil fern]

You're probably right

Maybe I can't achieve what I am trying. Not on this hardware

Thanks for the help

[meager pelican]

You could try a screen-space effect maybe with a distance field that changes over time.

But it isn't going to go outside of the original mesh boundaries.

And as I said, you cannot exactly move pixels in the frag(), but you can move an effect across them.

like a moving/shrinking screen-space dither.

[tranquil fern]

https://youtu.be/vh85pzT959M

This is what gave me the idea it might be possible by the way

Just explaining the "magic" I was looking for

You seemed annoyed so I wanted to explain myself

[meager pelican]

I'm not. 🙂
Didn't mean to come off that way. Just being literal/factual.

That vertex offset example is using a high poly model, that you offset the verts in.
Which is what I was suggesting that you swap in with a different prefab during the effect.

The cost is really low on the CPU.

Since it's a prefab.

Then you mess around in the shader with the high-poly model.

[tranquil fern]

Yeah but I had like half a million verts per enemy. It dropped to 20fps

[meager pelican]

But how "heavy" that is, and how to deal with it....gets tricky.

[tranquil fern]

I'm trying to push it too much

[meager pelican]

That might be a bit much for VR. 😉

[tranquil fern]

Yeah

[smoky spire]

also you said you assigned multiple emitters to each bone?

[tranquil fern]

I want to cut through am enemy with a sword and they need to dissolve/explode. I want them to turn into smoke/dust

[tranquil fern]

No just one per bone to approximate the shape

I tired emitters and I tried pre-cut mesh

Also tried a dissolve like this (looking up the link)

https://assetstore.unity.com/packages/vfx/shaders/advanced-dissolve-111598

This looks awful because hdr and bloom can't be enabled. Also it's not what I wanted to achieve but haha

[meager pelican]

How about if they "shimmer out" like with a Star Trek transporter effect?

Maybe dust colored.

They key is that it is the same outline of the object.

Then it is a screen-space effect.

Or try it with VFX like @smoky spire said.

[tranquil fern]

I never watched star trek. Am I banned now?

[meager pelican]

Yes

lol

But OK,

[tranquil fern]

I'll try vfx 😄

[meager pelican]

I'll just say you could combine it with some kind of vert offsets expanding, and dither it and maybe clip it by descending height over time.

But it would be screen space.

[tranquil fern]

Ah

[meager pelican]

Not more mesh data.

[tranquil fern]

I'll play around with it. Maybe this restriction could be a feature

As in, optimized mesh for a specific effect. I'll try some stuff

[smoky spire]

https://answers.unity.com/questions/512031/geometry-explosion-effect.html

[tranquil fern]

Heh that's what I asked 😄 just phrased better

But I understand now that it would depend on the triangles I make in the mesh

Also why pistol whip looks the way it looks

Blocky and made out of planes

[meager pelican]

That one's a geometry shader (generates meshes).
Per the blog here: http://technicalartistry.blogspot.com/2012/06/explosion-shader-v2.html

[tranquil fern]

Or quads. I never know the difference

I read part of the article and I'm already confused but I so have an idea. I can use opacity. Maybe I can make a texture pattern that's triangles or whatever, but it's a gradient. Then I can floor/clamp that over time to make the triangles smaller and smaller. Everything above some float is considered white, everything below black.

[meager pelican]

That's basically the idea behind a screen-space dithering effect I mentioned above. Or whatever effect. You're applying some effect to the 2D silhouette of the mesh, which you can also vertex displace/distort to some degree before applying the effect.

But it is screen-space in that it is being applied to the resulting pixels covering the mesh area in 2D.

[tranquil fern]

I think I found a good source to learn from

I have no idea how it works, but this: https://assetstore.unity.com/packages/tools/particles-effects/disperse-pixels-101494

[silver sparrow]

right now i have a cube with one face having a pink vertex colour and the rest of the faces having no vertex colour at all. question is, how do i know colour my cube in shader graph where the face with the pink vertex colour have a colour of orange or something?

[hearty obsidian]

@silver sparrow Use the vertex color node plugged into a split node, sample the r channel and use that as a multiplier for your color

[silver sparrow]

alright will try

yea it works

another question, does lerp only work for colours black and white?

value of 0 and 1

[hearty obsidian]

Lerp interpolates between A and B at value T.

A and B can be whatever colors you want, can be whatever values you want

T isn't clamped by default in shadergraph and can exceed 0-1

[silver sparrow]

i see i see

[exotic kraken]

Is it possible to have a variable whose value changes in between each iteration of the vertex shader in a single pass?

[shadow locust]

wdym by "each iteration"? You mean for each vertex? Each mesh instance?

[exotic kraken]

Each vertex of the same mesh

[shadow locust]

You can get the vertex ID

SV_VertexID is the semantic for it

Or the vertex id node in Shader Graph

https://docs.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-input-assembler-stage-using#vertexid

[exotic kraken]

Thanks

[exotic kraken]

I was trying to create a shader that highlights vertices of a mesh. I mod the vertex ID by 2, and then multiply white by the result, and store the product into the vertex color. This colors each vertex by white or black. My plan was to then multiply each fragment by the vertex color's distance from 0.5 (which is the same for all components so I just use the red channel), so that colors where the vertex is pure white is the same as when it is pure black. And then I would color each fragment by that difference. This was the result:

The problem is that adjacent vertices (vertices whose id comes right after the other) are not guaranteed to be arranged in a way so that the vertex colors are always different

For instance, 2 adjacent vertices can be black, so that the interpolated fragments are all black as well, ruining the effect.

I need a way to measure the distance of a fragment from the vertices it is interpolated between

[silver sparrow]

if i were to sample the r channel, it would affect meshes with vertex colours with red in it right? is it even possible to just affect meshes with a pink vertex colour only?

[dim yoke]

@smoky spire btw if you're going to do the picker using UI elements, this is the whole shader https://paste.myst.rs/817q3ve8 I used. Ig ZWrite Off and ZTest[unity_GUIZTestMode] are the most important if you want the UI element sorting to work. There's no need for surface shaders (doubt surface shader would even work very well on UI elements). Pretty much yoinked the shader from there (I removed quite many things but it seems to work without them just fine): https://github.com/TwoTailsGames/Unity-Built-in-Shaders/blob/master/DefaultResourcesExtra/UI/UI-Default.shader

[shadow locust]

This may be helpful reading:
https://stackoverflow.com/questions/25397586/accessing-barycentric-coordinates-inside-fragment-shader
https://stackoverflow.com/questions/61459574/determine-distance-from-each-vertex-in-glsl-fragment-shader

[wise willow]

I am confused what channel do you use for questions about built in renderer?

[shadow locust]

whichever cahnnel fits your question. Shaders, lighting, etc..

[radiant spindle]

not sure if this is the right place to ask but I'm trying to limit player visibility to line of sight.
so basically i'd want most of the map in darkness besides a small cone in front of the player.
Anyone know good resources on how to go about that?

[radiant spindle]

i love unity. Well the community. I was able to find a really good video that allowed me to do just what i wanted

https://www.youtube.com/watch?v=6Q0FnPy9Orc

[paper edge]

guys, i feel like the material shouldn't be looking like it, right?

[exotic kraken]

Is there anything a camera can render to other than a texture or the screen?

[paper edge]

is this question directed to me?

[exotic kraken]

No

[dim yoke]

It seems you havent set up urp correctly (assuming you upgraded from default rp to urp. If thats the case you can make sure to follow every of these steps https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@7.1/manual/InstallURPIntoAProject.html)

[paper edge]

ooooh

thnx @dim yoke

[grand jolt]

where can i find the "Lit" shader with emissions?

does someone know?

[shrewd elm]

Any new material is lit, emission is under the material properties.

[coarse thicket]

no did not work 😦

[clever saddle]

But when I wanna scale the texture.It turns like this :<

But the normal map looks fine tho

[random meadow]

Hallo! is it possible to override an internal built-in-pipeline shader?

I think i've found a bug and want to override the default ui shader to check withouth having to create a million materials and assign them to every ui object

[dim yoke]

it seems the texture wrap mode is set to Clamp. It should be set to Repeat if you want repeating texture (from Texture Import Settings)

[clever saddle]

Thx!

[dim yoke]

np

[slim steppe]

How can I prevent this?

[dim yoke]

so what is "this"? this noise here ig?

[slim steppe]

it supposed to be like the lines in this image but hogh distance makes them distorted

[dim yoke]

is that texture or dynamic shader?

[slim steppe]

sine wave using height

so dynamic shader

[dim yoke]

ig there's no any easy way to prevent that from happening. that's just how it works... you could still try to make your own "mipmap" system inside the shader to scale the noise when you look at it from further distance or from more tilted angle.

[slim steppe]

so maybe hight - depth?

[dim yoke]

or maybe even better than scaling the noise, would be to smooth the noise somehow (so it blurs to somewhat constant greyish color)

[slim steppe]

thanks!

[dim yoke]

@slim steppe my educated guess it that the noise appears only when the thickness of the stripes gets thinner than one pixel on the screen. you could actually use partial derivatives (ddx and ddy or fwidth) somehow to blur it when the stripes gets too close to each other

[slim steppe]

I just did this:

[dim yoke]

atleast it's better now

[slim tulip]

Greetings gentlemen, could anyone give me a direction regarding native shader?
I've got a shader which creates 2D water-like effect. It has ripple/displacement effect as a UV, and "plays" it with a certain frequency.
I'm a bit new to native shaders, I've only used Shader Graph, so if anyone could hint me, which part of the code corresponds to "running something that applies displacement over time/in cycle" I'd be grateful.
Here's the preview, here's part of the code with some magic numbers which makes it quite unreadable
https://gfycat.com/bigcleverbichonfrise

The problem is that these ripples/displacements are too "sharp", appearing too quickly.

fixed4 _Tint;
            sampler2D _Displacement;
            float4 _Displacement_ST;
            float PespectiveCorrection;

            float4 frag(v2f i) : SV_TARGET
            {
                float2 perspectiveCorrection = float2(2.0 * (0.5 - i.uv.x) * i.uv.y, 0.0);
                float4 displacement = normalize(tex2D(_Displacement,
                                                      TRANSFORM_TEX(i.uv + perspectiveCorrection, _Displacement)));
                //float2 adjusted = i.screenuv.xy + ((displacement.rg - 0.5) * 0.015);
                float2 adjusted = i.screenuv.xy + ((displacement.rg - 0.5) * 0.015);

                float distanceToEdge = abs(_TopEdgePosition - adjusted.y);
                float sampleY = _TopEdgePosition + distanceToEdge;

                float4 output = tex2D(_SSWaterReflectionsTex, float2(adjusted.x, sampleY)) * _Tint;
                return output;
            }

[past wedge]

hello, I'm trying to make a basic shader that can receive and cast shadows, but receiving shadows does not work 😦
https://pastebin.com/JKSNBW9K

it's probably something totally obvious, but I can't find it 😦

[storm pollen]

halp. why cginc's not working? it was working fine until now and i have no clue how to fix it. reimporting project not helping

[onyx jungle]

Hey, does anyone know how I could lookup the colour of my procedural skybox in my fog shader so I can blend the fog with the procedural sky?

Currently my fog just drops off

and its ugly, I want to blend it with the procedural sky, so I need a way of looking up the sky box colour in the shader

[smoky spire]

Thanks this was helpful, I was more worried about the math than what kind of shader I was using at the moment, but your shader made things easier to swap over to what I needed

I've run into an issue where I am changing a float value with SetFloat() function in my script, if I stop the game in the editor after changing the value via script, it does not reset to it's inital value

hTesting.GetMaterial(0).SetFloat("_HueShift", mainSlider.value);

to get around this I am manually setting the float value in the Start() function to 0, but I was wondering if there's a setting in the shader to make it reset to 0

[dim yoke]

Thats how I have figured it out too, idk if theres any better ways

[smoky spire]

also, fun fact, GetComponent<CanvasRenderer>().GetMaterial(0) will return null in start and awake functions

but if you GetComponent<UnityEngine.UI.Image>().material it's fine

[blissful atlas]

might find some helpful info here on how to prevent it:
https://iquilezles.org/www/articles/bandlimiting/bandlimiting.htm

[wise willow]

Is there a way to get the camera depth texture with an orthographic camera in the built in renderer?

[clear vector]

Does MaterialPropertyBlock.SetBuffer(string propertyName, ComputeBuffer compBuffer) will work with only DrawMeshInstancedIndirect? (not with DrawMeshInstanced?)

[shadow locust]

It should work with both 🤔

[strong oriole]

Since writing my own Terrain shader is proving too hard, what if I just generated a texture procedurally and then added it to my Terrain object at runtime?

It shouldn't be hard to take my base textures, use my heightmap to generate a uv map, then use both of them to blend my textures, maybe with some noise.

[toxic heath]

When I do a Windows player build, all my URP/Lit materials with baked lighting appear flat shaded; base colour only, no normal/emissive/smoothness etc. There are no errors in the player log, and I've disabled all the shader-stripping options I could find to no effect. Any suggestions on how I could figure out what's causing this? (Play in editor works fine, even when I set it to use built assets rather than the assetdatabase.)

[grand jolt]

is there any way to set the current material on an object in script without having to attach another shader to it & not having to use sharedMaterial?

[toxic heath]

Please don't delete and repost your question every few lines to make it appear later; it's very rude to other people who have questions.

[unreal gale]

Hi, I am having trouble finalizing a field of view effect through shader graph. The shader system is working but not showing smoothness in all situations.

I found a lead to a solution to my problem, but it is shader code only. On top of not being able to really understand it, I also don't know if it tackles the problem the exact same way that I try to. Would there be someone who could spare some time helping me decipher the shaders ?
Here is the solution attached, one of the answers has a zip containing the shaders and a sample scene.
https://forum.unity.com/threads/is-it-possible-to-smooth-stencil-mask-edges-sight-of-view.523552/

[clear vector]

I'm trying to use MaterialPropertyBlock.SetBuffer with ComputeBuffer with Vector4 values and all goes without any errors but it doesn't affect rendering, but MaterialPropertyBlock.SetVectorArray with same Vector4 list does.
I initialize ComputeBuffer, do SetData on it and pass it to MPB only once at start. Is it right?

[kind juniper]

I've never tried passing ComputeBuffers in a property block, so not sure, but do you have a structured buffer set up properly on the shader side? The fact that it worked with an array, makes me think that you're nor using a structured buffer.

[clear vector]

I use ShaderGraph->OverridePropertyDeclaration->HybridInstanced. How can it work with MPB.SetVectorArray without StructuredBuffer?

[kind juniper]

Never heard about it... Is that somehow related to the Hybrid renderer?

Either way, it seems like the property that you try to override is not a structured buffer. In fact, I'm not even sure a structured buffer can be a property.

[kind juniper]

How does it look in the shader graph?

[clear vector]

yes it is not StructuredBuffer. Is there no way to use make instanced property in shader graph?

[kind juniper]

Yeah, so it's a regular Vector4, not a structured buffer.
Compute buffers are used to fill structured buffer on the shader side.
With material property block you're setting properties for 1 individual object(if I get it right), so it should just be SetVector or whatever method you use to set float4 property.

That being said, I've no clue about how to get gpu instancing working in a shader graph.

[fair sleet]

I found out that you can use a GraphicsBuffer instead of a ComputeBuffer to procedurally draw meshes.
Is there a way to update a Mesh object's indices, triangles and uvs instead?

[clear vector]

but with MPB.SetVectorArray it works 🙂

[kind juniper]

Seems like that's the correct way according to the docs. Assuming you're using DrawMeshInstanced.

[clear vector]

can u pls refer me to this section of docs?

[kind juniper]

https://docs.unity3d.com/ScriptReference/Graphics.DrawMeshInstanced.html
Although you could just google it, and it'll be among the first results.

[clear vector]

sorry, i thought you was talking about HybridInstanced

[kind juniper]

Ah

You could google that too though. 😄

[clear vector]

i've asked a ref because AFAIK there is no details on HybridInstanced property declaration

[kind juniper]

Where did you hear about it then?

[clear vector]

from looking inside shader graph in editor 🙂

all we have in docs

[kind juniper]

There's some info in the Hybrid renderer docs:
https://docs.unity3d.com/Packages/com.unity.rendering.hybrid@0.8/manual/index.html#custom-shadergraph-material-property-overrides

[clear vector]

since MPB.Set[Type]Array can recieve NativeArray i can still use this hybrid per instanced approach and fill data from jobs.

[kind juniper]

Seems to be entirely ECS dependent:

[MaterialProperty("_Color", MaterialPropertyFormat.Float4)]
public struct MyOwnColor : IComponentData
{
    public float4 Value;
}

There are sample projects mentioned too. Maybe worth having a look at them.

[clear vector]

yes, i know about it 🙂 But i'm writing custom SpriteRenderSystem, and want to do the same with having properties data in components

[kind juniper]

No clue then. Sounds too advanced for me.😅

[clear vector]

The problem with using HybridRendererV2 and sprites is that pure 2D requires extra sorting

[clear vector]

Thank you though 🙂 My last hope is to look inside HybridRendererV2 and try to figure out what's going on there and then try to replicate

[kind juniper]

They probably use reflection or some compiler magic to turn that attribute into some code.

[clear vector]

yep, definitely, and DOTS can be very picky about generic ways

[strong oriole]

Since I'm too dumb to figure out how to write terrain shaders, is it viable for me to just blend textures in a compute shader to create a new texture and then apply that to my Terrain?

[kind juniper]

You can try, but it would probably get exponentially slower with increase in the size of the terrain

Not to mention that there's a limitation of texture size to 16k I think..? That means that if you have a 1k*1k terrain, it's only 16 pixels per unit. Pretty low res.

[strong oriole]

I see, so most textures are tiled and much lower res. My texture couldn't be tiled since it need to cover the entire terrain.

[marble stump]

Anyone know how vertices work with 2d sprites?

[steady lintel]

Hey! I’m trying to add an emission pass to my custom shader— What’s the most simple way to add this?

[toxic heath]

Just add the emissive colour to your final colour (probably before fog)? Emission doesn't usually require its own pass.

Though I guess it does depend on what you mean by "custom shader"; if you're making a shadergraph or surface shader those will have their own places to plug in emissive colour.

[unreal gale]

can someone help me understand this shader ? I want to translate it to shader graph. I am unfamiliar with the shader code, as I only have been doing simple shaders through shader graph

[lusty badger]

How should it look like?
Looks like they take the R channel from UV and use it as color

[unreal gale]

it's a shader that should renders the inside of a mesh white, and fade to black close to the edges, no matter the shape of the mesh

I took it from a thread, it was an answer to a similar problem I had, but I don't know it the mesh also needs a special complexity

[gray harness]

fixed4 frag (v2f i) : SV_Target
            {
                float4 position = normalize(float4(i.worldPos, 0) - _LightPos)
                // normalize above value
                float d = (dot(i.normal, position) / 2) + 0.5;
                float4 color = float4(_Color[0] * d, _Color[1] * d, _Color[2] * d, 0);
                return color;
            }

float4 color = float4(_Color[0] * d, _Color[1] * d, _Color[2] * d, 0);

its crashing on this line with error of undeclared identifier any ideas?

im pretty new to shaders

pls help

oh yes

forgot ;

on the first line of shader

[steady lintel]

Is it possible to add emission to an unlit shader?

Because that’s what mine is, basically a toonshader

[toxic heath]

For a single shader emissive and unlit are basically the same thing; they're both added colour value that isn't affected by the surrounding lighting.
What do you want your potential emissive material to do that's different from what your current unlit material does?

[shadow locust]

toon shaders are inherently lit shaders. They just use a different lighting calculation than a normal PBR shader

[steady lintel]

Huh, interesting. I just thought that because my toonshader still resides in the unlit catagory on my shader list

[shadow locust]

Notice how they still respond to environmental light and shadow, they just quantize the brightness levels instead of smoothly blending between them.

[steady lintel]

I guess an added emission value like in the standard surface shaders? So I can chose to overlay a color on top of my existing material if I wanted. Useful for making things look like they’re glowing, especially with bloom.

[exotic kraken]

I am confused about how OnRenderImage works. Is "source" the fully rendered frame from the camera? If so, what is "destination"?

[shadow locust]

the one you can write to if you want to make changes

[grand jolt]

is there any way to set the current material on an object in script without having to attach another shader to it & not having to use sharedMaterial using material instead?

[exotic kraken]

Is this Blit here redundant? Doesn't this copy the screen texture to the screen or am I misunderstanding what these functions do?

[shadow locust]

no idea, never used it

[regal stag]

Yeah, this looks like it doesn't do anything useful. You'd typically pass a material into the blit for custom image effects / post processing stuff.

[exotic kraken]

It's my understanding that OnRenderImage is called on cameras after they have rendered a frame fully. In that case src is that fully rendered frame as a texture, so what does dst refer to?

[regal stag]

If you have multiple components that use OnRenderImage, I believe dst is the src of the next one in the chain. Otherwise it's the camera's render target again.

Ah yeah, it says it here : https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnRenderImage.html

If multiple scripts on the same Camera implement OnRenderImage, Unity calls them in the order that they appear in the Camera Inspector window, starting from the top. The destination of one operation is the source of the next one; internally, Unity creates one or more temporary RenderTextures to store these intermediate results.

[regal stag]

Not sure what you're asking here. You don't necessarily need to "attach another shader to it", you just need a reference to a Material. If you're setting the material I'm not sure if there's a difference between using sharedMaterial vs material (I think it's only important if you need to get the material or clone it)

[wraith inlet]

I'm sure you know more about this than me, but isn't sharedMaterial the material on a prefab asset while material is the material on a prefab instance? If the object is not a prefab I assume they're the same, but seems like a significant difference if it is a prefab. Doesn't setting the sharedMaterial affect other objects? (ie all instances of the same prefab?)

[regal stag]

Afaik it has nothing to do with prefabs. sharedMaterial is the material asset that's been assigned, while material creates an instance/clone of that material and assigns it to the renderer. That way if you edit values on it (e.g. renderer.material.SetFloat(..)) it only affects that object and doesn't override what was on the material asset (which would affect all objects using that material).
But as for assignment (renderer.material = vs renderer.sharedMaterial =) I'm not sure if there's a difference there. I think in both cases it just overrides the material for that renderer only.

[wraith inlet]

ah, that makes sense. Thanks!

[grand jolt]

@regal stag I just want to use ".material", instead of ".shaderMaterial" without my script complaining about the possibility of a "leaked shader"

[regal stag]

If you use .material you're meant to destroy the cloned material instance at some point, e.g. Destroy(renderer.material); in OnDestroy() function. That's probably what the warning is referring to.

[clear vector]

I've seen some mentions about defining StructuredBuffers through CustomFunction node. Can someone provide an example of how to do this?

[grand jolt]

@regal stag

Instantiating material due to calling renderer.material during edit mode. This will leak materials into the scene. You most likely want to use renderer.sharedMaterial instead.

[vocal narwhal]

If you're accessing materials in edit-mode you should use .sharedMaterial, which is the actual material asset

if you want to make a new one, instance it manually

[weak stone]

anyone know what causes this?

[grand jolt]

@vocal narwhal : what do you mean? do i have to do :

#if UNITY_EDITOR
    .material
#else
    .sharedMaterial
#endif

?

[vocal narwhal]

I have no idea what the context is, but no

#if UNITY_EDITOR is not "edit mode"

and that would be back to front even if it was

[grand jolt]

@vocal narwhal

public void EntityMetallic ( Transform target, float metallic ) {
    // Get `Renderer` on `target`
    var renderer = target.GetComponent <Renderer> ( );
    // Use the Standard shader on the material
    renderer.material.shader = Shader.Find ( "Standard" );
    // Set `metallic` level{s}
    renderer.material.SetFloat ( "_Metallic", metallic );
}

is what i have. this only happens after i hit stop on the runtime.