archived-lighting

[arctic isle]

the meshes need to be static and the lights baked or mixed but I think that's already the case

[iron vine]

Thats correct

i will check the generate lightmaps uvs

hold on...

i think im onto something

hmmm...

to weird for words

[arctic isle]

it looks like it did something though

can you go to the scene view

[iron vine]

yes

[south sage]

hi, need some help with baking light. I'm trying to bake light for a large level, and for objects that are very far away from the world origin (over 2000 units away), the baked light has very weird artifacts and doesn't look right at all. If I move them closer to the world origin it will bake perfectly. Any way to make light bake properly for far away objects?

[arctic isle]

can you share comparison images?

[south sage]

i tested it in an empty scene, first pic the object is at around X -1000 , second pic the object is at over X -2000

the same happens in the actual level

[arctic isle]

interesting, can you show a side-by-side of the baked lightmap debug view?

I have a feeling that what's changing is the realtime light (?)

if that's mixed

[arctic isle]

welp ok that makes it clearer 😅
can you file a !bug

[tawdry schooner]

Reporting bugs

🪲 To make bug reporting as quickly as possible, we made a bug reporting application for you. When running Unity choose Help->Report a Bug in the menu, or you can access it directly through the executable in the directory where Unity is installed. It will also launch automatically if you experience a crash.

📝 If your bug report is to do with Documentation, either an error, typo, or omission, you can report it by scrolling to the bottom of the page where you found the issue and click ‘Report a problem on this page’!

💡If your report is to do with a new feature idea, you can check the Unity Product Roadmaps page to see if your idea has already been planned.

For more complete instructions on how to report bugs, access: https://unity3d.com/unity/qa/bug-reporting

[south sage]

ok will do

so anyway to work around this?

[arctic isle]

not that I know of right now, only to bake the scenes individually and load them in tiles. it suprises me that this happens with x -2000 though, it seems like a relatively low value

[south sage]

ah ok, thanks anyway

[arctic isle]

maybe you can try to increase the pushoff value in the lightmap parameters (not the lighting settings 😄)

you'll need to make your own asset and increase the pushoff value to something higher, maybe 0.1? this maybe is floating point errors

[south sage]

OH THAT WORKED

[arctic isle]

don't raise it too much though because that will mess things up as well

[south sage]

ok

thanks so much

[ornate axle]

Thank you. I’ll check this out

[distant yew]

I have a problem with unity lighting...

(using baked lights)

its been a long time since ive had to light stuff... but still, this is what it feels like

I have a reflection probe, I have a box that includes the whole scene, everything is static, everything has lightmap UV's, the bounces is set to 5, everything should be correct... but still its like... the above image.

[deft fiber]

In my experience baked lighting is specifically the opposite of that since it uses real world accurate inverse square falloff, plus the extra smoothness you get from bounce lighting

Which is probably the same technique Unreal uses as well

Just ensure that light range is not too low, especially if using mixed lights

In URP and HDRP realtime lights also use inverse square falloff, though in BiRP they use linear falloff

[distant yew]

the only way I seem to be able to overcome this, if I want general mood lighting, is to set the radius to like 2000 and the intensity to 10,000 which seems very wrong. unity just desaturates everything so if your not trying to make bland realism lights your just sol.

and im talking unreal 3, not unreal 4 or 5, but if they are anything like 3 the falloff value is exposed so using the inverse square law is optional.

[deft fiber]

What render pipeline are you using and what is your scene like?

You also need to be using linear color space and HDR tonemapping for lights not to blow out

You generally should never need that high of a range, and only HDRP uses that high intensities because it uses real world light intensity units

[distant yew]

ill look into it

I work for a studio, albeit a small one without many experts in 3d yet, so there are certain questions I can't answer 😛

[frozen palm]

Hi Ive been having an issue

where I use an HDRI reflection probe

and it relfects onto this smooth texture I have for the phone screen

I dont want these reflections

my suspicion is that it is reflecing the curtains

which is the map used how can I get around this so it doesn't reflect the map as well

[lethal heron]

what is your material? in hdrp or urp? try making the material non-metallic to remove the reflection completely. you can also reduce smoothness to make the reflection more diffuse

[frozen palm]

yes it was HDRP i just changed the map on the reflection probe and it worked

so lol wasnt too bad

https://polyhaven.com/hdris

this site was pretty good

[opaque ice]

baked lightings are too much brighter than realtime . how to fix it
NOTE - I am using gamma colorspace and Standard Render Pipeline

[opaque ice]

this is the realtime lighted one

can anyone also pls share resources , how to properly light an interior of horror game , like which lights to setup and where .

[deft fiber]

As I said realtime lighting has no bounce/indirect light, so you'll need to consider that when designing lighting

Note that there is no "standard render pipeline"
You probably mean "built-in render pipeline"
All three render pipelines are equally "standard" at this point, and the word is not used to avoid confusion with the term "scriptable render pipeline" or SRP

[deft fiber]

I'm not aware of such resources
You may have to find resources about Unity's baked lightmapping and about lighting in general, and by practicing those learn how to get specific results

[violet furnace]

Hello, I am kinda at loss here, I don't know why the lightning has this green hue (pic1)

The crate FBX looks like in pic 2 in blender.

Can anyone help me point to what i'm doing wrong? Pic3 is directional light settings

[deft fiber]

Disable compression and set filtering to point for your palette texture

[violet furnace]

Huge thanks

[errant plank]

Can anyone help me? When I bake my lighting, my lighting isn’t showing

[gloomy marten]

Hi, i make a 3d character and the area that uv split on the head look like this. Any clue how to solve this problem ?

[deft fiber]

Usually this suggests a problem with the normal map
Perhaps it's not of "type: normal map"

But it could be also just an incorrectly produced normal map, or in wrong format (GL vs DX)
Or the mesh normals could be wrong
I'd test without a normal and with different normal maps

[tired inlet]

So I'm checking out if integrating raytraced shadows is an option for my project to achieve higher fidelity shadows for high end users (as shadow filtering is broken as fuck right now)

But I'm running in to the issue where raytraced shadows will only shadow one object, and completely ignore the rest

When I then duplicate one of the ignored objects it will start shadowing that one, but not the one it did previously

All objects have the same shadow casting settings, and the maximum screen space shadows has been adjusted to a super high count to see if that would work

[deft fiber]

Which render pipeline? What type of RT shadows are you using?

[tired inlet]

HD render pipeline, and using the raytraced shadows option set up in the way unity describes it (so enabling raytracing > enabling screen space shadows in hdrp asset > enable raytracing option on a point light shadowmap setting) HDRP wizard confirms the project is set up correctly

[deft fiber]

That's important info, but not a feature I'm specifically familiar with
Unless someone who is happens by, you could repost in #archived-hdrp after a reasonable time delay

[tired inlet]

Yeah, all good

Thanks anyway

[balmy wasp]

Hi,
I've been trying to bake the light in my scene on Unity URP for several times now. Every time, no matter what I modify, I get huge black squares on my models and the light doesn't bake well.
I use my GPU to bake the lights. After some research, I understand that it doesn't always give the best results, but I'd be surprised if it did. The problem is that with the CPU it takes too long (a day).
Thanks!

[balmy wasp]

(the pictures represent the baked lightmaps)

[opaque ice]

yeah . i baked lightmaps and the results are good this time becz
i switched to linear color space . doing this realtime and baked lightmaps looked same (added with some cool softshadows).
I still have no knowledge about pipelines tho ,
thxx

[deft fiber]

Noise/fireflies can have many causes
https://forum.unity.com/threads/lightmapping-troubleshooting-guide.1340936/ multiple chapters here depict similar issues

You can decrease samples and particularly resolution for a big reduction in bake time
And disable objects for test bakes

I see on the outside of the building what also looks like UV overlap

[balmy wasp]

Thank you very much for sharing this, I think I found what I was looking for. It is wierd I had read this post from unity : https://blog.unity.com/engine-platform/5-common-lightmapping-problems-and-tips-to-help-you-fix-them but it did not contain this chapter 🧐

[balmy wasp]

ok thanks for the tip

[quartz lily]

The street lights "come on" as the camera gets closer to them.. Can anyone explain what's happening and how I edit this? Using HDRP and 2022.3.11

[gloomy siren]

Hey, just started my first hdrp project. For some reason i get this weird bloom effect which you can see whenever i look up in the sky. What is the cause of that and how can i fix this?

[gloomy siren]

i am using the HDRI Sky override on the global volume component

[quartz lily]

Volumetrics on the light (Sun) maybe?

[arctic isle]

maybe something to do with adaptive exposure on the camera?

[deft fiber]

Looks to me it's the volumetric fog distance

[quartz lily]

It is, thanks

[somber anchor]

Is there some way of getting a pixel's position in world space in the fragment Shader? I need the x and z positions to calculate the normal

[deft fiber]

Yeah you can get the fragment position, but you can get the geometry normal just as easily

[somber anchor]

is the geometry normal already calculated?

[deft fiber]

yes https://docs.unity3d.com/Packages/com.unity.shadergraph@13.1/manual/Normal-Vector-Node.html

[gloomy siren]

Didint fix it

[gloomy siren]

These are the settings for the camera.

[deft fiber]

Those are not the exposure volume settings
Because the sky is massively darker than the lit ground and your exposure is trying to adapt to one of the two, it results in massive difference in brightness

[gloomy siren]

Alright, where do i find them?

[somber anchor]

Oh, my shader is with code, not visual

[deft fiber]

"sky and fog volume" is where your current overrides are most likely

[gloomy siren]

oh i am so sorry, i didnt even noitce this object was in the scene... shouldnt be there... deleted it, but didnt fix the problem

[deft fiber]

You could ask in #archived-shaders or try to find a code example
It should be one of the most basic things

[somber anchor]

Okay, thank you

[deft fiber]

You need at least a volume with exposure override since you're using HDRP

Not sure why delete it, unless you already configured another one

[gloomy siren]

Yes had another one...

[gloomy siren]

Okay i know of this override and added it to the global volume. None of the modes really change anything

[deft fiber]

As always with HDRP it's easier to work off the default setup

[gloomy siren]

created a new scene, same problem xD i dont get it, tried different hdris... didnt do the trick either

[deft fiber]

The ground is too bright compared to the sky for automatic exposure
You should dim the lighting, boost sky exposure or tweak the automatic exposure settings / use fixed exposure instead

[gloomy siren]

Reducing the light intesity and chaning the global volume override "Hdri Sky" to "Exposure" and then lowering it did it.

[gloomy siren]

Thanks

[muted tinsel]

When exporting my textures created within Substance Painter into Unity, they are not as bright and saturated. Is there are way to recover the original quality of those colors or at least mimic them? So far, changing the shader to Unlit has brought the colors closest to the original, however, doing so does not allow for shadows to be received or casted

[hallow nimbus]

what is the best approach to when the player turns on a generator, a bunch of lights at an area turns on? i could just do something like turn the game objects on, but the problem is, these are all realtime lighting so optimization and performance can be an issue, how can i do something like this where the lights are baked? im assuming id have to switch scenes right? thanks

[deft fiber]

I would guess they are the same texture, but the HDRi you have in substance painter is brighter and has warmer colors than the sky you have in Unity

[deft fiber]

Realtime lights are by far the simplest way to make lights that can turn on and off
Baked lightmaps can be swapped at runtime using various techniques, but there's not really any official workflow for it
Scene switching can be an option, especially if you're using additive scenes but it may be hard to make seamless

[hot echo]

anyone know why my point light doesn't light up every angle?

[deft fiber]

Looks like a normal map issue
Most likely the normal map texture is not of type: normal map

[hot echo]

Sadly already checked that, I've tried with different materials also and I'm getting the same issue

[arctic isle]

is this baked?

[hot echo]

nope

[deft fiber]

If you remove the normal map entirely from the material, I expect it the weird shadowing would not happen

[proven carbon]

hey, i am following a tutorial on youtube and i realised my shadows are very ugly... how do i fix this? first pic is mine and second pic i how i want it

[deft fiber]

What kind of tutorial?

Shadows can break like this if the normals used for shading don't match the geometry that's used for shadow casting, since normally shading hides the shadow border

[proven carbon]

its sebastian lagues video on procedual planets

[deft fiber]

And since you're using HDRP the shadows require TAA to be filtered smoothly which you won't have by default in scene view

Anyway the problem most likely is that your mesh normals aren't being deformed or aren't being recalculated to the deformed mesh

You can disable shadow casting to make the ugly jaggies go away, but the shading will likely still be incorrect

[proven carbon]

how do i enable TAA

[deft fiber]

Scene window has that option in one of the dropdowns, and it must be set to "always refresh"
Or you can preview it using the game window

Assuming it's enabled there

[proven carbon]

hmm didnt help much

i calculate normals by grabbing each vertex and doing m_normals[i] = vertecies[i].normalized and afterwards mesh.normals = m_normals

[proven carbon]

i figured out the shadows sort of, nect problem

see that the bumps on the sphere have a more bright color?

well mine dont

seems like i dindnt calculate the normals right...

all good!

i just used mesh.RecalculateNormals() which creates seams, but i will figure that out later

[fallow tapir]

what could make my shadows jump around like this? https://www.youtube.com/watch?v=f34lrjvq5bE

watch the trees

[hallow nimbus]

i see, im thinking that instead of turning all the lights at ones, i will create a sphere around the player and all the lights that is within the range are the ones only turned on to save performance, is that a good idea?

[deft fiber]

Only if you need to do that
Realtime light cost in forward rendering path is proportional to complexity of meshes that are rendered in the range of lights, so LODs and mesh culling also cull lights effectively
In deferred rendering path lighting is only calculated for each screen pixel so trying to cull lights probably itself more computationally expensive than the lights

Shadow casting is another story, but that's why there's the shadow distance settings

[hallow nimbus]

can you explain it simpler terms? I can't really understand it my apologiess

[deft fiber]

What part does not seem understandable

[hallow nimbus]

the rendering paths

i still have no idea about lighting so thats why

[brittle cloud]

uh... question. why is my spotlight not lighting?

oh nvm i fixed it.

[limber echo]

Hey i need help adding indoor lighting into my game. I have an asset that has emission but its not casting any light really and i dunno how to use emission stuff

[plush hatch]

which pipeline are you using?

[limber echo]

pipeline?

i know none of this stuff lol

[plush hatch]

ok.. for what are you using a material with emission?

cuz if its for smth like light bulbs/lamps you can just place a (colored) light source

[limber echo]

Yea its a light bulb for a room

And thats what it is

[plush hatch]

ok, then you just create a light source (right click on hierarchy > Lights) and place it where your light bulb is

if you want your emissive material to glow (not actually emitting light, just the "glow effect" itself on the camera), you need to bloom as a post processing effect

[limber echo]

Okay so how 1. Which kind of light? Directional, spot, area? And also 2. How do i keep it from going through the walls into the other room

[plush hatch]

1. depends: the image below represents how light is disturbed from different kind of light sources. E.g. Spot light is optimal for ceiling lights, point lights for candles or fires, etc...

2. is more complicated. You'd have to post an image of your scene for that first (prpbably its because of walls not casting shadows but there are other reasons for light leaks)

[limber echo]

okay let me send that

thats without light

just emission

[plush hatch]

yea you've to add the light, it wont work if you just use emission (except if you use global illumination but thats another topic)

[limber echo]

okay so what light is best? Spot?

[plush hatch]

yes, you place them under your models. make sure they have anough range and intensity and they look down as well.

abviously if your emissive material is purple, you want to color the light purple too if thats what ur goinh for

[limber echo]

so i did it, but its leaking through the walls to the next room

or do i even want the light to light up the whole room?

I made it so where it was really a spot, but the problem is that you cant see the cieling at all, and the light is still leaking

[plush hatch]

to prevent it leaking: go to your light and under "shadow type" select anything other than "no shadows"

[limber echo]

now its not lighting up the room just the pod that i have in there on the right wall

[plush hatch]

place the light just a little bit under your lamps so it is not inside any geometry

if that doesnt fix it, please send an image

[limber echo]

like inside the room or outside the room? bc rn its above the cieling

[plush hatch]

yea the light should be under the ceiling so its inside the room

[limber echo]

ah oki

So its not going through the walls into other rooms anymore, but it is going through to the rock outside

but it fixed everything else

[plush hatch]

the rock outside is illuminated by the sun (the directional light) in your scene. if you dont want that, just disable the directional light in your scene

[limber echo]

no its the spotlight. i just tested it

thats with the spotlight off

[plush hatch]

is the rock under the room?

[limber echo]

yea should it be above?

yea i just moved it above in the hierarchy and its still doing it

[plush hatch]

nope but that means your floor in the room does not cast shadows. click on the floor and navigate to its mesh renderer. Then set Lighting > Cast shadows to On/Doublesided

[plush hatch]

nono i mean is the rock under the room in the actual scene/game

[limber echo]

nooo ill rotate and show

its beside of it

also the floor is already casting shadows

[plush hatch]

type Light in the search box of your hierarchy. Go through every light in your scene and disable all lights where it says that it is directional (as seen in the image)

The bed below is lit by the spotlight, the bed above by a directional light (as an example)

[limber echo]

still happening

[plush hatch]

🤨 maybe theres other light facing to the rock or theres something weird with the rocks material

[limber echo]

the only light i have are the directional lights which are disabled and the 3 spot lights i have.

this spot light is the only one effecting the rock

for some reason the rocks material is a vertex color, would that have something to do with it?

[plush hatch]

can you show the rocks material

[limber echo]

yea

[plush hatch]

change it to a lit shader. if you want that look, increase the metallness/moothness then accordingly

[limber echo]

alright

got it fixed. thank you smm!

[plush hatch]

🔥

[limber echo]

Hey is it better to have these lights baked or realtime

[plush hatch]

Thats a complicated story.. id recomend you watching some tutorials on that on yt or smth. Basically realtime means the light emitted from the source is always dynamic and lits its environment. Baked light does not emit light - its ligth is used and received by static objects (objects that dont move) - and when you bake the global illumination for your scene (which can based on complexity of your scenes geometry take a VERY long time) the light is used for illuminating the environment.

Tldr:
Realtime: Low Quality / More Performance Heavy / Easy to use and fits with almost all usecases
Baked: Very high lighting quality / Almost no performance hits / .. The big cons: Takes a very long amount of time and isnt very adaptive + can only be used with static objects (everytime you move a object the whole scene needs to be baked agains completely)

[fallow tapir]

what could be causing my shadows to move like this with the camera? notice the tree shadows in particular.

https://www.youtube.com/watch?v=f34lrjvq5bE

[limber echo]

okay thats a great description. thank you

[burnt brook]

I can't fix these lines. And yes compression is disabled

Using Radeon Pro and A-Trous filtering does make it much better, but its still there

[midnight sorrel]

How can I make less smoothed, more solid baked shadows?

[shell juniper]

I don't remember how exactly, but you need to increase the resolution of your shadowmask

It might be tied to lightmapping settings but I'm not sure

[charred moth]

does anyone know what the cause of these lightmap artifacts is?

[deft fiber]

Texel invalidity and UV overlap
https://forum.unity.com/threads/lightmapping-troubleshooting-guide.1340936/
Chapters 9 and 15

[deft fiber]

Lightmaps are limited to texture pixel resolution (which have to be pretty low for large areas), so there isn't much of a way
Increasing resolution would improve the appearance though, and additionally it's possible to apply effects to the lightmap using shaders for example to posterize it
But that's tricky and an advanced topic

[deft fiber]

This is called color banding which occurs because our monitors are limited to a meager 16 million colors
If the color banding is from a mixed/realtime light you may be able to enable "dithering" that will smudge the lines
If the bands are on the texture itself I don't know if there's any way to fix it, short of applying similar dithering in an image editing program using some context sensitive algorithm
Looks like it's realtime though
And if it isn't, almost any kind of texture on the wall will conceal the bands

[languid blaze]

there are lots of debug visualizations in the scene view that can help with this

[deft fiber]

Most games suffer from color banding but you don't really notice it

[languid blaze]

You usually prevent color banding by not creating huge smooth gradients

e.g. by giving the wall some texture

like this!

There's still banding if you squint, but it's a lot harder to notice

[deft fiber]

We think the same way!

[deft fiber]

The specific chapters in my link give a link to the docs where all GI visualization modes can be found, but I admit I didn't try to spare the legwork in this case

[languid blaze]

oh yeah, I just thought I should throw that out there

[fallow tapir]

so i'm having a strange issue with SpriteRenderers casting shadows for the wrong sprite!

notice the trees in the top left, how they are casting a shadow for the big tree instead of the skinny tree.

and as i walk around the scene they switch between the different types of trees seemingly at random

like if i go here the skinny trees have appropriate shadows again

[deft fiber]

A very strange problem, I'd guess something related to sprite batching
Sprite renderers are not really designed for use with lit shaders, and HDRP which I recall you using is not really designed for any 2D renderers so those can be sources of all kinds of weirdness

[fallow tapir]

i wouldn't even know where to begin with debugging

and it's really annoying and distracting

[deft fiber]

Frame debugger may give some clues at what stage the problem is happening, and could reveal if sprites use sprite batching or SRP batching to give some direction of how to poke that
Could also port a test scene into URP to see if that fares better

[main ginkgo]

Hi guys I have a quick question, so whenever I change scene, the lightning looks weird compared to when played each scene separately (what I meant is if I played from scene 1 teleports to scene two , the lightning is ruined in scene 2.) so it got fixed by making auto generated lightning (fixed) although when I build the game, it was stuck on gl data build for over an hour / while compared I turn auto generative lightning off the problem of long build wait time is gone, but when I click played and tried changing scenes in-game lightning is now ruined. Is there anyway I can fix the problem? Thanks!

[deft fiber]

Disable auto generate lighting and generate lighting manually for each scene
Also disable Baked Global Illumination for scenes that do not need to use baked lightmapping before generating

[main ginkgo]

Thank you!

[fallow tapir]

I think I might just try moving to URP. I mean so far I failed to get the post processing to have the look I wanted out of HDRP in the first place anyway and my frame rate is already lower than it should be (though that's much more likely my fault in scripts somewhere lol). I might not have to fight URP so much to make 2d elements work properly in 3D and it should give some extra processing time headroom.

What does the downgrade process look like?

[deft fiber]

You'd have to make the materials and post process volumes again and probably tweak lights as well
There's not yet a "downgrade process" so it's manual work

[fallow tapir]

I'll need to redo all my shaders too right?

[deft fiber]

Shader Graphs can have multiple target render pipelines so that should be a way to make them compatible, save for RP-specific nodes

[deft fiber]

https://forum.unity.com/threads/lightmapping-troubleshooting-guide.1340936/ chapter 9 for UV issues
Chapter 15 for invalid texel issues if they persist after you fix the UVs

[rocky fox]

Hi! I'm trying to make a scene with light switches in a house, but I'd like the lighting to be baked. Is there any solution to having "local" lightmaps for a room (as in multiple smaller lightmaps)? I think it'd be easier than creating multiple lightmaps that are switched between every possible lighting combination throughout the house. Though if it's not possible I may just have to do that

[deft fiber]

No official solution, but some third party ones
Realtime lights are easier for switchable lighting because of that

Technically you could additively blend as many lightmaps as you want, but the shaders of all lit objects then would need the functionality to be able to sample multiple lightmaps which is tricky especially for shader compatibility
Also, light probes and reflection probes would not update which are also important for accurate baked lighting

They'd need a system of their own to do some kind of switching or blending

[rocky fox]

Hmm I see. Do you know of any 3rd party solutions to it?

[deft fiber]

I recall seeing some lightmap swappers on the asset store but that's all I know

[rocky fox]

Got it, I'll try looking around

thanks

[deft fiber]

There could be free ones too
You'll probably find different kinds either designed for switchable lighting, or for day/night cycle lighting

[tulip tendon]

Enlighten realtime GI is still in the engine, even if deprecated it should work fine

[rocky fox]

What would that solve though? I want baked lighting for performance and better looking lighting purposes

[tulip tendon]

englighten bakes the light in smaller lightmaps so they are updated in realtime

you can also have both

for realtime lights use realtime GI and for lights that dont change use baked GI

[deft fiber]

Definitely worth seeing how Enlighten handles the scene

[tulip tendon]

the only thing is that enlighten doesnt work with the new APV's

[icy tundra]

When I bake a reflection probe it seems to be baking from the wrong position, causing super bad reflections. Realtime, it correctly renders from its set point.

[arctic isle]

what version + srp?

[polar wadi]

Hello, could anybody explain me why I still got light bleeding through walls despite having thick walls? I've already played with the bias but can't find a proper settings to make it disappear. I don't get it.

My wall is technically one inner wall and one outer wall if that has any impact

Using 2022.3.9f1 and HDRP

Ok some more testing, I've disabled SSGI to see how it goes and the direct light does bleed

Scaling the outer wall to 2, the bleeding stops but the light access gets messed up. What's the minimum wall thickness needed to not have bleeding?

Plus I'm not a fan of making walls too thick since it would make shadows look strange at certain angles depending on the time of day. What other techniques do we have to fix light bleeding?

[polar wadi]

ok, settings shadow resolution to 4096 on the directional light did fix the bleeding but at low quality settings, the whole room is fully bright...

How to get a proper dark room in low settings too? I'm quite lost here...

[craggy edge]

urp lights are only showing in unity scene and not in game view, they have the correct sprite-lit-default texture

I couldnt fix this issue yet

I made a new scene and copy and pasted stuff from the old to the new one and it is working now!

[whole bramble]

Suppose, I have a scene which requires 2 days to have the lighting baked (using progressive cpu)

In my region, often blackout(loadshedding) occurs, in that case, How can I keep the baking Progress not to restart from the beginning everytime for stupid absence of electricity?

is there any way? im not even sure with my ups backup, as cpu uses it's 100% when baking, the ups cant hold much for long.

[craggy edge]

having another source of power, like a charged battery that can support ur pc during ausency of electricity

[untold saddle]

if anyone can help, i need my player model to be completely unaffected by light. you should be able to see the player when they're in front of you as if it was in a lit room

right now you can barely see it, however it's not because of the light intensity, but the skybox

[tulip tendon]

the material unlit which will make it completely unaffected by any kind of light

[icy tundra]

2022.3.11 and latest urp version. Clearing the gi cache seems to have fixed it somehow.

[timber lichen]

unlit shader

[untold saddle]

i just imported an fbx model and i made the material in blender, but i can't get the "material 0.001" to change to unlit. how could i do this?

[polar wadi]

You need to extract the materials from your FBX in the inspector. Then you'll be able to change it.

[deft fiber]

Or alternatively use "on demand remap" to assign new materials, or assign them at prefab-level

[untold saddle]

how would one go about that?

[grave patrol]

I have looked around for a few hours and have not found a fix to my issue. I have really odd lighting on objects when baking my lighting. I use these same lighting settings in another scene and it works great. The objects are ProBuilder objects, along with most objects in the working scene. Are there any guides to fix this issue? If not any tips?

[tulip tendon]

generate lightmap uv's for the probuilder objects

there is a button in the probuilder window that generates uv's for all objects in the scene

is that doesnt work increase the lightmap resolution to something like 32 for the probuilder objects

also keep the lightmap resolution to a number thats ^2

like 2, 4, 8, 16, 32, 64, etc

[grave patrol]

I am going to try these, I will let you know if they work.

[grave patrol]

I tried those fixes with no luck. I thought to share a video with what the rendering looks like; I have never seen something like this.

[deft fiber]

It still looks like UV overlap as mentioned and that's what the console seems to be telling you also

You can use the scene window debug views to preview for UV overlap issues, and another view can be found in the Baked Lightmaps tab by previewing the lightmaps there
Once you've fixed the UV overlap you should look into texel invalidity issues if those pixelated artifacts persist

https://forum.unity.com/threads/lightmapping-troubleshooting-guide.1340936/
Chapter 9 for UV problems and 15 for invalid texels

Just note that invalid texel artifacts can appear anywhere if you don't have correct lightmap UVs, even if there actually is no texel invalidity

[formal veldt]

so do metal shaders not interact with the light map or light probes or something

someone told me they usually dont care if you are in a shadow

how do I get a shader that uses reflection probes to actually respond if I'm in a dark area etc.

im using the URP with baked lighting

I have this environment for example

and it doesn't seem to care if I'm in a dark area or not

whereas if I disable the metallic aspect of this shader it does

[night shell]

if an object is purely metallic then essentially its being shaded only by what its reflecting, not what its being lit by if that makes sense

so if you have an object that is pure metallic, yet its appearance doesn't change when you move around the room, then the problem is the reflection

[formal veldt]

does it not see that the area over there is dark?

I dont even really want reflections

I just want it to look shiny

in blender you can just do a specular style of lighting but it doesnt seem to work like that in URP

[formal veldt]

what is the problem with the reflection

[night shell]

use box projection

and line it up well with the walls of the room

[tulip tendon]

Then instead of making it fully metalic find a balance between metalic and specularity

[night shell]

and also its because URP is PBR based, I remember we discussed this a while back and your aiming for more old school style of shading

[formal veldt]

im not sure the exact terminology for what im after, cuz idk how shaders work. I just know I want it to look a bit shiny, and be dark in dark areas and light in light areas

[night shell]

I'll boil it down then

use reflection probes with box projection

it'll help your metallic objects

or anything that you want to have shine

as for having like a strong specular highlight, that is dependent on the lights in your scene, since your using URP I don't think the shaders still have a specular term for baked lighting

unless if you are using realtime lighting

or mixed lighting

[formal veldt]

box projection didn't seem to change anything

[night shell]

how did you define the reflection probe bounds?

because the bounds of the reflection probe dictate the box projection

[tulip tendon]

I dont see how the reflection probe should help

[formal veldt]

I went into ortho view and made it slightly larger than this area

[night shell]

ahh I see the issue

[formal veldt]

looks exactly the same

[polar wadi]

In case you didn't find out yourself, you simply click on your FBX asset in Unity then in the Inspector window, you just go to the material tab. From here, simply extract or you can directly put a new material in the material slots displayed then click apply.

[night shell]

before we move forward I wanna verify

what kind of lighting are you using @formal veldt

is it all purely baked?

are you using realtime lights? lights set to mixed? etc.?

whats your setup

from the looks of it I'm going to assume baked, but can you elaborate?

[tulip tendon]

Isnt his problem that his gun material ignores lightning?

[formal veldt]

as far as I can tell it's all baked

[night shell]

it is, and light probes is certainly another cause

specifically improper light probe placement

[tulip tendon]

And thats because he has the metalic setting trough the roof

[night shell]

if his metallic setting is through the roof that means the object is pretty much only shaded by the specular term

i.e. reflections

[tulip tendon]

Ye

[night shell]

which is why I was going down on the reflection part

[tulip tendon]

By default reflections are sampled from the skybox

[night shell]

he has a probe already setup in the room

although just to verify, what setting is reflection probes set to on the mesh renderer for your gun model @formal veldt ?

[tulip tendon]

That doesnt change the way the gun is lightup tough

That just replaces the reflection sample from the skybox to the probe

[night shell]

huh?

can you show us the material settings you have for the gun model?

[formal veldt]

this is most of it

[night shell]

show the advanced tab

[formal veldt]

I keep messing around with this one but usually both are on

[tulip tendon]

Put the metalic map to something like 0.6

See how it looks

Also what version of unity are you on?

[formal veldt]

ive tried every combination of values for the metallic map and smoothness

those arent the issue

[night shell]

do you have light probes setup for that room?

[formal veldt]

I think so? because when I turn off the metallic the shadows actually shade hte gun

[night shell]

do you have a light probe group in your scene?

[formal veldt]

oh jeez

[night shell]

so thats a yes then

[tulip tendon]

Oh god

Thats a lot of probes

[formal veldt]

I didnt want to place them manually lol

[tulip tendon]

What version are you on?

[night shell]

well thats what happens with automation, but I don't think thats the problem neither

but just as a test spawn a white sphere

and move it around the scene

does it get shaded properly? darkens/lightens where it should?

if it does then it only confirms that once again its the reflections that are at fault

[formal veldt]

it seems to be shaded properly yea

again the gun itself is shaded fine

as long as I dont try to mke it shiny

[night shell]

screenshots to show it

I just wanna make sure its clear as day

you never know

[tulip tendon]

Damn ignoring my question...

[night shell]

@formal veldt

[formal veldt]

if I make a shiny sphere it seems to have the same issue

[night shell]

nice

this makes it clear as day now

so it is the reflection at fault

so how to fix? you'll need to modify the reflection probe settings

[tulip tendon]

Hmm 2021

[night shell]

i.e. changing the bounds and moving where its capturing the reflection

a reflection probe basically captures a 360 image of the enviorment its in

[tulip tendon]

I would have suggested using the new APV's but thats in unity 2023

[night shell]

and then (if enabled) it projects that texture into a "box"

to approximate the enviorment

[tulip tendon]

Or put 3 different box relfection probes in the dark and lit areas

[night shell]

^^^ that works too but I wouldn't have too many reflection probes, can be bad for memory/performance

only if its necessary

[tulip tendon]

For a game like this you can get away with it

Is not realtime so it wont be recalculated

And if he makes it row res it shouldnt be a problem with memory either

[night shell]

its still taking up memory and has to be sampled by objects within bounds

you can still do it of course

[formal veldt]

what would you do then

[night shell]

but I'm saying that I'm certain you can make it work with a single probe for that room

but if you can't

then multiple probes it'll have to be

[tulip tendon]

The thing is he will have to spam probes all over all the levels

[night shell]

and?

[tulip tendon]

Is a lot of extra manual work

Just to have a gun shiny

[formal veldt]

how

[night shell]

if you want shine and the weapon to look how you want it, you need to set them up accordingly there really isn't too many other ways to go about it

unless if you are willing to dive into custom shaders and write a shader than can sample specularity from light probes

and other shenangins

or using mixed/realtime lights

[formal veldt]

is it possible to have shinyness without reflection probes

[tulip tendon]

Yes it will just sample the skybox by default

[formal veldt]

I dont want it to look like the skybox I want to add specular highlights that are basde on the light sources of the map

[night shell]

see?

[tulip tendon]

In that case mixed/realtime lights is the solution

But you dont need metalic for specular highlights

[night shell]

you don't its true

but it will feed into the overall look

of the "shine"

[formal veldt]

the thing is I dont want JUST light sources to light it

[tulip tendon]

Yes but you dont need max metalic value

[formal veldt]

because I feel if I make them mixed lights its just gonna be black until it's in range of a light source

[tulip tendon]

Realtime GI is a thing

[formal veldt]

I dont want global illumination

I Need the gun to be pitch black in certain areas

[tulip tendon]

._.

But baked lighting is global ilumination

[formal veldt]

some areas dont get reached by the light even with the bouncing

I need it to be dark in those areas

[tulip tendon]

Yeah

Thats what light probes are for

I dont see how that has anything to do with the shinyness tough

[formal veldt]

basically I don't care about any meshes in the reflection. I dont need to reflect textures or details. I think I just need it to have a specular highlight based on the light probes

so when it moves around it has that shiny specular effect

[night shell]

that can only be done with a custom shader

[tulip tendon]

The old lightprobe system doesnt sample specularity

The new one might tough

[formal veldt]

there really isn't any basic specular shader? blender has that

[night shell]

you can sample dominant directionality

I've done it

its possible

but what hes asking will have to venture into the realm of custom shaders

[formal veldt]

regardless I don't think I'm gonna be able to write my own custom shader tbh

[night shell]

and if he can't do that, it'll have to be achieved with mixed lights

or reflection probes

specifically reflection probes with some tricks i.e. "specular probes" with emissives and such

[tulip tendon]

Ive used the new adaptive probe volumes in unity 2023, masive improvement from the lightprobe groups and there is no manual probe placing required

[night shell]

his inital problem was that the gun that was set to a full metallic material, yet it wasn't being shaded how he wanted in dark areas, that means its a reflection issue at that point

the diffuse shading is apparently already sufficing for him

alright let me setup a scene just like what you have to guide you through it @formal veldt

[tulip tendon]

Im not sure if the new APV's sample specularity tough

[formal veldt]

making a shader?

[night shell]

can I get a wide shot of that area so I can see what kind of enviorment your working with @formal veldt ?

[night shell]

no I'll show you ways to get what you want without needing to dive into that

[formal veldt]

ive just been testing in this area

[night shell]

gotcha, need a moment to build something similar

[formal veldt]

I suppose the specular might be hard to see since the gun is actually a flat plane and the primary light source is directly above and pointing down? idk if that would affect it

[night shell]

its a possibility, going to put together a sample scene though so I'll be back in a couple

[formal veldt]

also I found a webpage that describes what I am looking for

https://www.unrealengine.com/en-US/tech-blog/amid-evil-crafting-3d-weapons-into-2d-sprites

this is the exact game that made me want to do this style

I don't expect it to look AS good but something to this effect

[formal veldt]

that looks similar yea

[night shell]

gonna do a couple of things to make it match where I think you are at for the moment

so diffuse wise as we saw you had your light probes setup

the light gets dark as it should depending on where it is thanks to light probes

but now you want "shine" to appear

I'll start with the mixed light approach since that'll be probably what your after, but then I'll dive into reflection probe setup for something like this

so the material here is purely shiny

but of course I haven't setup a reflection probe at the moment so by default it reflects the skybox

so for the time being I'll disable enviorment reflections and focus on specular highlights which is what your after

so despite being in this area in bright sun there is no "shine" appearing

one way to fix this is to use mixed lighting

I have a single directional light in the scene, so I'll go ahead and change the settings so that its mixed

setting it to a mixed light means its essentially both a realtime light, and a baked light

since its full white I'll darken it so its easier to see the highlight

but now with the light set to mixed, the light you have in the scene is casting realtime lighting

and we have shine

I can make the material smoothness smaller so that this shine appears larger

and the shine will darken accordingly

mind you this is purely specular reflection, no enviorment reflections here

now let me show you the problem that you were running into when you made the object fully metallic

this is the reflection probe part

so I've setup a reflection probe, and made the ball purly metallic/shiny

however I move it to the shadow

it still looks "bright"

so this is where we dive into earlier what we were discussing

box projection, capture point, and multiple probes to better approximate reflections

despite being in the shadow the reflection here is wrong

and you can see that its reflecting generally in the area where there is most sun

we can help mitigate this problem by enabling box projection, which will allow the reflection to essentially change depending on where you are in the enviorment

it helps, but of course its still not right, since its in the middle of that room, and still appears pretty bright

we can play with the capture point of the reflection probe to change where its taking this "360 image" from

[formal veldt]

so with the specular, does this mean the reflections will show even if line of sight to the light is blocked?

[night shell]

if you have enviorment reflections enabled then it will certainly have that "bright" apperance even if its out of sight of a light

but if its purely only specular, i.e. you disable enviorment reflections in the shader then only that single little shine will be affected

[night shell]

moved the capture point down, and the reflection looks better now

this should start painting the picture

@formal veldt

[formal veldt]

I still can't seem to get the specular highlights

whats the material settings for that first one

the gray sphere

I set the main sun directional light to baked but I didnt notice a difference

I mean mixed

[night shell]

you need to rebuild lighting

[formal veldt]

even though going to mixed is just adding a realtime component?

im not going from realtime to baked

im going from baked to baked + realtime

[night shell]

when a light is set to baked, unity basiclaly disables it

and it doesn't reenable it even if you change the mode

[formal veldt]

so I have to bake the entire lightmap again?

[night shell]

yes

[formal veldt]

ok

[night shell]

@tulip tendon object here with light probes being lit with the shader method I mentioned

all baked, no mixed lights, samples "specular" from the light probe

although its very basic, it samples it essentially from the brightest point

[formal veldt]

I thought I needed mixed to get specular highlights

[night shell]

unless if you have a shader that can do it (which unitys URP doesn't) mixed is the only way

you can also get it with reflection probes with a "specular probes" trick but this is kinda hacky, and will likely not work for you given that you don't want to bother setting up reflection probes for the areas in your map

but it is possible

but beyond that, the only other way (outside of the reflection probes, specular probes I just showed, or a custom shader that samples specularity like I showed, or fakes it) is with mixed or realtime lights

[formal veldt]

now it seems that the material just isn't affected by the global lighting at all

where it used to be

[night shell]

what are your material settings again?

is it full metallic?

[formal veldt]

that pic was taken with 0.697 metallic

even if I put zero metallic and stand in darkness its fullbright

[night shell]

and its the same level?

[formal veldt]

yea

all I did was make the main light mixed and bake lighting

[night shell]

something must have went wrong with the light probes

ohhhh wait

ahhh I think I know

whats your lighting mode?

[formal veldt]

what do you mean

[formal veldt]

baked indirect

idk what that means

[night shell]

switch to subtractive

and bake again

[formal veldt]

ok

whats the difference

[night shell]

baked indirect means when lighting is baked, its only baking the GI term, not the direct lighting

what the heck does that mean?

here

left is direct illumination only

right is BOTH direct illumination and GI

in baked indirect ,its basically the right, but minus the direct illumination

its only the GI term

[formal veldt]

what is subtractive

[night shell]

subtractive means that when you bake lighting, it basically does everything in the lightmap (like the right image), but for mixed lights when it casts shadows it will "subtract" them from the lightmap

[orchid cairn]

is there a way I can have this emit lighting onto the walls? Like have it so the texture pattern emits lighting

Idk if that's possible but figured I'd ask

[night shell]

yes

its possible

well kinda, it depends how your scene is lit

[orchid cairn]

how would I go about doing that?

[orchid cairn]

wdym

[night shell]

is it realtime lighting? or baked lighting?

[orchid cairn]

realtime

[night shell]

well to get that lighting to affect the scene you'll most likely have to bake it

you can use enlighten

which is a realtime GI within unity

[formal veldt]

still bright

[night shell]

but if you want pure baked (which I'd suggest especially if nothing in that scene will change) then use the progressive for that.

[orchid cairn]

what does Realtime GI do, just make it so textures emit light?

[night shell]

can you enable shadow casting perhaps?

[formal veldt]

where

[night shell]

it does alot more than just "making textures emit light" but yes thats apart of it

[formal veldt]

on the weapon?

[night shell]

yes

[formal veldt]

it didnt change anything

[night shell]

is there an option for recieving shadows?

find it odd that option is missing

[formal veldt]

recieve shadows is on

on the shader

[night shell]

do you have shadow casting enabled in the URP pipeline settings?

[formal veldt]

I mean I didnt turn them off when I rebaked the lighting

and it worked before

[night shell]

those options shouldn't affect baking

this is just on the mesh

and material

[formal veldt]

what settings are these

[night shell]

this is venturing into the point of URP troubleshooting which I'm honestly not to familiar with

but URP usually has an asset in your project

called URP settings or whatnot

you can also find it by going into edit > project settings > quality

and you can find the asset in there

[orchid cairn]

wait so how do I get GI to work in the texture? tried looking up youtube tutorials but they aren't super helpful

[night shell]

GI is for the entire scene, its not really something on a "texture level" so to speak

it ventures into the realm of "lightmapping"

you can find tutorials on that

to get that texture to "emit light" you'll need to make sure emission is on

and then from there bake your scene accordingly

there is a bit of setup involved though so I'd be sure to watch a tutorial on one

[night shell]

@formal veldt

on the top

there should be a field for the render asset

[formal veldt]

cast shadows is on

[night shell]

screenshot?

[night shell]

huh, wonder what is missing

ohhhh wait

I keep forgetting

your gun model is just a flat dumb sprite

wait nvm even in that case it should be fine

ask in urp for help on getting proper lighting with mixed lights in URP

it would be easier to help you if you were in the built in pipeline but clearly some things have changed in URP so its not the same

[night shell]

specifically with shadow casting on your dynamic mesh for mixed lights

@formal veldt

[formal veldt]

I changed it back to baked and its properly lit now @night shell

[night shell]

but you'll be missing your specular highlights

[formal veldt]

yea

I hate rendering

[night shell]

rendering is tough, but learning about it makes it less hard

[formal veldt]

are you using a baked light for that example scene

[night shell]

for this one no, this was mixed lights to get the specular shine to show up @formal veldt

on the regular unity shaders that is

[formal veldt]

so mixed lights were working for you

[night shell]

yes, although they don't seem to be working for you

and your in URP so I'm not sure whats wrong or different about it

[icy tundra]

Is there a way to have a realtime light not cast specular reflections?

[deft fiber]

In HDRP yes, in other render pipelines I think not
Could have a shader with custom lighting that modifies or removes specular from additional lights, but I don't know if there's a way to only do it for a specific light

@formal veldt I didn't see if it was mentioned but you need a reflection probe for each spot where the reflected lighting changes significantly, or use only rough nonmetallic materials
Beyond that what you're asking for would require raytracing

[pastel elbow]

is it possible to keep reflections from lighting themselves up?

like, there are no lights, it should not be illuminated

[deft fiber]

You need a reflection probe for that area, or potentially* an indirect lighting controller override if on HDRP

[pastel elbow]

ah unfortunate
ok

I could use SSR
maybe ill just do that

[deft fiber]

Could work but near the edges of the screen it'll fall back to sky or closest reflection probe

[pastel elbow]

I could also just cope and have some unrealistic lighting in some areas

[hidden ridge]

Hey, I'm having some issues with baked lighting. A bit of background, there are walls on either sides of the door that are their own separate pieces. However, this will leave a gap above the door if I don't fill it in. So, of course, I did put another one there, just above the door. However, it leaves a weird artifact when the baked lighting processes and you can very obviously see the seem.

Any ideas on how to fix this?

[tulip tendon]

you just need to properly snap it

use vertex snapping

also i would reccomend to stop using progrids, it has been discontinued since its features became built in the engine

[hidden ridge]

The block over the door?

And just that or?

Cause just doing CTRL and moving the central block made no difference when I rebaked it.

[little mason]

I have a big sun and a bunch of planets orbiting the sun. I want to project light out in all directions from the sun so that it hits the planets. How do I do this?

[somber sun]

Hi, Is there a reason why only some of my terrain layers receive light when using real time GI?

(the opposite)

[tulip tendon]

Both? I said vertext snapping, the one with control is increment snaping, to vertex snap hold V and hover over a corner then move it to another corner

[tulip tendon]

A giant point light i guess

[abstract helm]

How to fix walls?

[little mason]

the problem now is that if I jack up the intensity the first few planets get lit but the farther away ones dont get lit unless the intensity is even higher drowning the first few planets in light

[hidden ridge]

Unless I'm misunderstanding how vertex snapping works, I tried using it with V but it still didn't resolve the issue.

[tulip tendon]

I still dont see the wall snapped properly

[worn ridge]

making a game, my lights for some reason keep turning on and off in playmode.

[hidden ridge]

IDK how to do what you are saying then, nor can I tell how you see the wall isn't snapped properly.

[tulip tendon]

you can clearly see the wall is not snapped properly

https://www.youtube.com/watch?v=GKBKBl1fhas check this out

[tulip tendon]

that happens because on forward rendering there is a light limit per object, set the rendering path to forward+ or deferred so you dont have any light limits

[worn ridge]

oh ok

[hidden ridge]

That is a wall trim.

[rustic garden]

Anyone know how you can create light shafts or sort of volumetric lights like this?

[tribal coyote]

How do I get the light to invert? So only the edges are lit up instead of the edges being shadowed

[copper steeple]

put the lighting around the island not in it

[tribal coyote]

Yeah then the middle part would be lit up no?

[copper steeple]

then do both?

[tribal coyote]

I don’t see how that would make the middle have a shadow?

[copper steeple]

im confused to you want the middle to be lit up?

i think i misread your message?

[tribal coyote]

No, only the grass (edges) should be lit up

[copper steeple]

well then put it outside of it like i said originally

[tribal coyote]

Like that red line?

[copper steeple]

yeah

[tribal coyote]

(I’m not on pc rn)

[copper steeple]

well it will have to go over the left part as well

[tribal coyote]

Yeah

[tribal coyote]

Oh well I’ll try it once I can

I understand the free form light as that the light is inside of the area

[tribal coyote]

@copper steeple

this is how it looks, the platforms that aren't islands work fine

[copper steeple]

di you forget to remove the lights inside the middle one?

[tribal coyote]

nope, i separated all the islands into different sorting layers, and set the large light to only affect itself and that island which is lit. idk if it was necessary but it was a try to solve it

[tribal coyote]

and this is how it looks if it targets all sorting layers

[copper steeple]

is everything at 0 on the z

axis

[tribal coyote]

yep

[copper steeple]

umm idk then

[tribal coyote]

yeah same, idk why you wouldn't be able to make the same effect for islands..

[surreal belfry]

Hello Guys, does anyone know why the lighting looks off in the game view? I only have this problem with Tiles using Normal Maps like the ones in the picture

[graceful lily]

Hello all! After changing the scale factors in unity to a larger number. My assets started having these weird lines on the sides where my assets connect. I am 100% sure that they align perfectly. I tried baking the lighting but it makes all my assets turn black

This is what I use as material

They were just fine when they were much smaller.

When I drag the real time shadows to 0 it disappears

[supple coyote]

Hello, I have some problem with reflection probes ( I guess)
HDRP, Unity 2022.3.10f1

can anyone help how to fix this

[languid wing]

this looks like a problem with a plugin you're using

Zibra Liquids?

You should ask the publisher of the plugin for help. Looks like a bug in their code, specifically their RenderComponent.

[supple coyote]

I write to them and they said its Unity fault

@languid wing

[languid wing]

They're wrong

[supple coyote]

what I can tell them that this is their fault

[languid wing]

I mean you can do what you want

maybe stop using their plugin if it doesn't work

[supple coyote]

too late, game is already on steam, and it's the core of the game

I mean can we somehow confirm that this is bug on asset publisher side?

[deft fiber]

How would it be Unity's fault that their asset made for Unity doesn't work with Unity

[timber kiln]

we didn't
that one does look like our bug
if you look closely I was replying to another thing when saying that it wasn't a bug
I also haven't blamed Unity anywhere

[deft fiber]

Judging by the error somewhere a custom pass is trying to access a reflection probe incorrectly
Seems like something they might know more about over at #archived-hdrp

[timber kiln]

Nah, that's just issue in our code
We seem to filter out reflection probe camera's in one part of the code but not another, and then do illegal dictionary access
Weirdly enough, we've already fixed exactly same issue before, so no idea how it appeared again

[supple coyote]

I fixed this, but the visual bugs are still appearing. So this error doesnt have any impact on bugs with this asset.

[winged dawn]

Morning! I have an issue with dynamic object in my project, the issue is as followed: non-shadow casting dynamic object that are GI static still cast AO on their surrounding and themselves.
The following post describes the issue aswell, but this method results in the object not casting AO on surrounding objects, but it still recieves AO from other objects onto itself. Is there a way to completely exclude the object from AO baking but still having it recieve GI?

https://forum.unity.com/threads/exclude-lightmapped-object-from-contributing-to-baked-ambient-occlusion.1089388/

[deft fiber]

Doesn't sound very possible aside from some workarounds like baking parts of the scene separately
With that it may help to use this system for tying lightmapping to prefabs instead of scenes https://github.com/Ayfel/PrefabLightmapping/
But baked lightmapping is "baked" for a reason so it's probably not easy in any case
Another hack you could consider is bake once with AO and once without, then combine those manually in an image editor

[polar wadi]

Hello, I'm having an issue with lighting when building the game. Shadows simply don't work the same as in the editor and I can't figure out why. Quality settings is set to High on both sides. Using HDRP and SSGI.

I have two scenes, one city map and one indoor. There appear to be two problems, possibly related:

1. On city map, the shadow gets some stripes in build only for some reason. I had this issue in editor too and changing bias value fixed it in editor but not in build. Why?
2. Indoor, rooms are using SSGI since they are loaded dynamically as well as textures from the StreamingAssets folder. The problem is that everything is fine in editor, but in build, the wall don't appear to block light anymore and the same shadow stripes bug occurs on the side.

Would anybody have any idea what's causing those issues?

[rapid geyser]

Hello eveyone. I want to add lens flare effect on some of the lights in my game. I downloaded a lens flare effect png with transparent background but the background of the image is displayed when i add the flare effect to the light. How can i make the background totally disappear?

[soft fulcrum]

try adding black background instead of transparency

[rapid geyser]

no the image completely dissappears then

i selected lightmap in the texture settings. It shouldn't display that checkered background. Is there something wrong with the image itself?

[placid kite]

I want to illuminate a large dynamic mesh with light probes but I can't use "Light probes volume" because I'm using URP, is there another way of doing that ?

[polar wadi]

Nobody knows about this issue? It seems like quite a big problem which should have occurred before though. I can't find any solution on Google :/

[tulip tendon]

i would suggest to just use screen space lens flares

[winged dawn]

Thankyou for your reaction, it’s very helpfull!

[lethal dagger]

https://media.discordapp.net/attachments/1017736310716383243/1172632995115581470/image.png?ex=65610694&is=654e9194&hm=dc9cc9ef4a9b3c1240928aa466fc6147d204879efd7b852e5db4484b1d0ccc24&

How to remone that ligting from corners

[plucky needle]

I really need help with a reflection probe problem I'm having. The issue is I have this building model, and i want the windows to have proper reflections.
The problem is, if i place the reflection probe inside the model, it reflects the frames of the windows because their sides aren't being culled, because they arent a backface
Is there a way to work around this? I can't think of a way to solve this, other than maybe some method to exclude one specific object from a reflection probe (culling mask doesn't work because i need to reflect other buildings)

weird reflection example

[vestal canopy]

put your reflection probe... not in the building

or disable the building when baking the reflection probe

[plucky needle]

Problem is, then the reflections arent accurate

[vestal canopy]

dude its a reflection probe, It will never be accurate. If you want accurate reflections id say you should go for ssr

[deft fiber]

You can disable the "reflection probe static" flag on the buildings
You probably don't want to though if you have more than one building
Probably rather would place them between the buildings

As mentioned they will never result in "true" reflections is a situation like that

[plucky needle]

yeah i do have a few buildings

[plucky needle]

thats what i ended up doing, its good enough for what im going for and doesn't really look too bad when everything's filled with buildings

[unique mango]

shadows in unity are trash, change my mind

[deft fiber]

Shadowcasting is limited and/or expensive in all render engines, it's kind of an unsolved problem so you have to work around the limitations of the system
Even if your post is kinda inflammatory and pointless you're technically not wrong

[unique mango]

I don't care about performance of shadows itself. If your shadowcaster have small amount of geometry then shadows are not a big deal. I care about the look of those

By that I mean the shadow bias settings, normalbias and other stuff like that.

[deft fiber]

If you want advice how to improve shadows in a specific scenario you need to give some info to work with

[unique mango]

In unity it doesn't matter how you set it. It's gonna look bad always.

Haven't solved that issue in years.

[deft fiber]

That's simply untrue
Every situation is different so the best thing you can do is practice and get familiar with the system so you know how to use it properly

[unique mango]

okay so let's say I'm trying to setup realtime sun and its shadows.

I've got unity's terrain set up. Directional light is going around the terrain kinda like sun should.

well that's not true but u got the logic here.

I can't spin the terrain itself

when sun is going behind terrain, I get some weird shadows. By that I mean it's kinda light casting through it.

but that's okay. I change the normalbias value to higher and problem solved.

but there is another problem that is caused by changing normalbias value

Other shadows are just casted 100m away from the object. pixelated and idk what else. faces shadows are split to pieces

[deft fiber]

If nothing stops the light from shining through from under the terrain, it will shine through from under the terrain
It sounds like that's what you're describing
If that's the case I'd cover the edges and underside of the terrain with geometry

If you have to modify light bias settings at all you have to be careful with it or seemingly unrelated shadow issues tend to appear
The bias values have to be there for a purpose

[deft fiber]

I'm not sure what this means exactly
Do you have a picture of it happening?

[unique mango]

that's what happened when you increase the normalbias value

that's where the normalbias value is set to 0.

and overall the shadow here looks good to me

and it could stay like this

but there it comes what I've described earlier with the terrain

so im trying to solve this overall shadow issue for about 5 years now. nothing has changed at all.

[deft fiber]

Which issue was referred to here?

[unique mango]

light casting though terrain from behind.

that also happens not only on terrain but other objects as well

[deft fiber]

And that wasn't solved by blocking the light from under the terrain with extra geometry?

[unique mango]

there is always a blind spot in that case. it's not perfect solution

[deft fiber]

"Blind spot"?

The "shadows are split to pieces" because the mesh has split normals
The properties of the mesh that's casting the shadows has a considerable effect on the appearance / quality of the shadow

Shadows have to be pushed "inward" (which depends on geometry) to avoid them poking out through the surface they're being cast by

For this reason you shouldn't have any too thin shadow casters, like I assume your terrain's underside is in this situation

[unique mango]

yeah. for that to work correctly I need to make exact same terrain mesh that have inverted normals and also made additional face for covering the borders of terrain. otherwise the light will cast though the gap between those 2 meshes.

idk if I described that correctly

i tried just putting big cube beneath terrain

it was like I described here. when light is just beyond the horizon, its passing light under the terrain through the side gap

can't do it like that

[deft fiber]

You only need to cover the side gap and underside, not replicate the whole terrain
I'd try to set height paint the edges of the terrain with the lowest possible height
I use mesh terrains instead of Terrains so I could simply copy and extrude the vertices on the edges

[unique mango]

the red thing is that cube I put beneath. but the gap I'm talking about is this green space

[deft fiber]

That's what we're both talking about

[unique mango]

yeah

So far, I'm giving up on that. Maybe I'll come back to that later.

[deft fiber]

Five years of struggle and giving up so close to solution? 😏

[unique mango]

this problem is not the only one 😏

Soon I'll invent the universal solution that I'm going to share with whole world ! 😄

[deft fiber]

If you can find some technical breakdowns or research papers of the techniques used it really does help you understand how to better navigate these features
It also will give you respect for all the clever hacks that let us have shadows of any kind in the first place ^^
I don't know if there are such resources for Unity's shadows but the techniques are basically all the same as are used in Unreal and Godot likewise, and you can find people struggling with these exact same issues there

[timber lichen]

so huh

has anyone tried this: https://github.com/SlightlyMad/VolumetricLights

or this: https://github.com/Unity-Technologies/VolumetricLighting

(for builtin RP)

i'm not sure if I'm doing anything wrongly but neither seem to work?

(I'm using directional light, so this excludes the second one already)

this is ideally what I'm trying to replicate:

[gilded cloak]

Is there a way I can add 2D global light to a 3D URP project? Trying to do a mix of the two, the player characters are going to be 2D sprites while the enemies are 3D models. The project is currently 3D URP, but I don't have any 2D lighting options. Is there a way to mix them together?

[unique mango]

I've got better package. not made by unity

so it's working fine ;D

[timber lichen]

is there an explanation of what I need to do

I'm literally a newbie with Unity lmao

(And does it work with buildin RP?)

[unique mango]

sure it works in builtin

otherwise I won't use it

I only work in built in

there are 6 steps u need to do for it to work.

1. import it to unity.
2. find scripts folder in the package
3. put VolumetricLightRenderer script to camera obj
4. put VolumetricLight script to the light obj that contains ligh component. (assign proper references (default spot cookie image))
5. go to projectSettings/graphics/alwaysIncludedShaders and put there 3 shaders that comes with the package.
6. run the game and play with the settings in light script in the inspector.

[timber lichen]

is it normal that I still don't see the volumetric light in the scene?

(without running)

I have a MainCamera and a DirectionalLight

• Added VolumetricLightRenderer to MainCamera, set default spot cookie = spotlight
• Added VolumetricLight to DirectionalLight
• Added shaders to graphics

It's either I'm dumb or this doesn't work either

[unique mango]

it won't work untill you run the game

if you'll find satisfying settings just copy component while game is running

and then paste it again when game is off

default spot cookie is just that one sprite that comes with the package

and that's all

[timber lichen]

alright, let me try building then

[unique mango]

you don't need to.

if you'll run game in editor it will work as well

[timber lichen]

with play?

[unique mango]

yup

[timber lichen]

it doesn't

[unique mango]

then settings are not correct or you just missed something

run the game and change script settings while in playmode

you should see the difference

try this

i'm using unity's default skybox just for showing purpose

notice that the game is runing

if I turn it off then script will turn off either

[unique mango]

those are just example settings

always included shaders should look like this

this script on camera

nothing else

[timber lichen]

mmh

could post-processing maybe affect this?

oh wait, it works now lol

ok I definitely have no idea what happened but ty @unique mango you're a savior

[unique mango]

No problem buddy

[deft fiber]

2D Renderer disables 3D features and vice versa
The only exception to this is using 2D Renderer with only "unlit" shaders for the 3D meshes

You can recreate all kinds of lighting-like effects using custom shaders that will work with 2D Renderer, but it disables all shader code that makes lights work normally within shaders

[timber lichen]

Difference is enormous, im so happy with this actually

[unique mango]

That's good news 😉

And your game looks pretty dang good

[deft fiber]

"Fit"? At a glance it looks more like an animation issue

What do you mean by "fit"

That's not a lighting issue, more like #🏃┃animation

You're probably using some kind of animation to move the feet
If the problem is the position of the feet relative to ground, that implies animation issue
Lighting has nothing to do with character postures or positions

[livid viper]

I'm having some issues with light baking where some cracks and crevices emit unnatural lighting, been fiddling around with lightmap settings to get it to a minimum, but still not happy about it, any tips on how to fix this?

and my lightmap settings

using 2019.3.15 hdrp

[livid viper]

managed to get a proper bake without any issues after setting indirect multiplier on my directional light to a lower value

[wraith viper]

Hey!

Anybody knows where this weird flickering on the Characters head is coming from? (using a Realtime Spotlight)

[neon python]

This is called "z-fighting"
What's happening is you have two planes perfectly overlapping each other, so the gpu sometimes renders one plane first, and something the other

That's what causes the flickering

[neon python]

An easy solution is to move one slightly above or below the other

[wraith viper]

Oh damn.. so the Characters Model has probably duplicate Vertices at the Head? (sorry for ping, hope its ok)

[neon python]

It's fine, if you don't have 2 seperate game objects, aka 2 seperate meshes, that are layered on top of each other, then yeah your mesh has an issue

but check to see if you can move the hat(?) slighty up in local position

[mossy mesa]

as he just said you can easily just move it above more, even 0.1 is fine

[wraith viper]

nah, it's an issue within the Mesh, there are no 2 characters at the same position
(already fixed the model)
https://streamable.com/1ol3yw

[mossy mesa]

oh ok! yeah I had that same issue just with buildings and the floor before so

[wraith viper]

tbh i never had these issues before, but i also never tried to do anything with lighting etc, i'm 99% programmer 😄
learning something new everyday, for the next time i have issues like that, z-fighting will be my first thought

[mossy mesa]

nice

[deft fiber]

Light probes work by grabbing the nearest light probe, no matter how far away that is

Always have relevant probes nearby

There's not really a way currently to have light probes that are only "local", but if you're using baked lighting you basically need to have probes in every area where the lighting changes anyway

Otherwise dynamic objects would get wrong lighting

[last tendon]

What's a "normal" value for the amount of lightmaps after baking? My settings result in 160 maps, but it seems to have no significant effect on performance. Is this a high number, targeting PC as platform with GTX10xx GPU?

[chilly kettle]

160? In which resolution? 😄

How big is the szene?

[last tendon]

Nvm - I realised bakery auto-reset the size to 256... I now made them 1024 and tadaa: down to 19 maps 🙂 thanks anyways!

[foggy monolith]

been experiencing an issue with one of my projects for a while now, it was originally a 2d project that wasnt going to have any lighting but ive since attempted to add lighting... and experienced the most confusing bug i have ever seen; no matter what i change in my URP settings, project settings, preferences, and even all the lighting settings change absolutely nothing whatsoever visually.. i always get an EXTREMELY lit scene despite no lights

even the materials in my project appear like bright circles

tried completely removing my URP and lighting settings assets both and remaking but nothing changed still

i 100% bet its just one specific setting somewhere i have checked that i really shouldnt but i cant figure it out for the life of me

even changing stuff on the materials like emission, metallic, and smoothness.... they all do nothing

[livid viper]

what causes this dark line to appear after a light bake

only using directional light and a hdri sky

[deft fiber]

Your project is likely still using the 2D Renderer, which disables all shader features used for 3D lighting

Create a new URP asset with Universal Renderer (or whatever the not-2D option is) and set it as active in Quality settings (And also in Graphics settings in case you disabled that)

[livid viper]

figured out that it was down to my lightmaps uv not lining up perfectly, the next question is though

How do I get them to line up perfectly, I modeled those cracks and are at a 45 degree angle but can't get them to line up with my current uv settings that were unity generated

[deft fiber]

You could try tweaking the lightmap UV generator settings, or create the lightmap UVs manually

[livid viper]

been playing with the hard angle setting, but can't get it to line up perfectly

[deft fiber]

If those squares are visualizing your lightmap resolution, it won't be possible for them to represent geometric details that small

[livid viper]

causes some really dark spots, but it's indeed not really noticable if you don't know where to look

[deft fiber]

I expect the crevice's shadow will spread to the flat surface even if the lightmap pixels line up perfectly

[livid viper]

doing them by hand is the hardest thing for me, do you have a recommendation for blender plugins that can help speed up the process

[livid viper]

oh okay that's good to hear

so it's not too unnatural looking

thanks for the quick response

[deft fiber]

Hmm it sounds like a potential issue to me but maybe it's what you want

[deft fiber]

There's TexTools that gives you more tools for doing it manually
Automatic unwrappers tend to be awful (especially blender's "lightmap pack" unwrap), and the decent ones are premium-priced

Still, unwrapping a beveled slab should be quite a simple task to do by hand

[livid viper]

this is the most discolored one on the baked lightmap, not sure if it's that noticeable if you don't know where to look

[livid viper]

oh yeah those are, but I have 18 seperate fbx's that are somewhat big for optimization where some objects are a bit more complex than normal

[deft fiber]

Wouldn't lose sleep over it
If you want seams to be visible to some extent I'd make them a bit bigger
Of course, you always get better baked lighting with continuous meshes and very subtle seams are best done in normal maps and texturing

[livid viper]

yeah had them as normal maps first, but I have to keep low specs in mind on this project where normal maps with a high aniso level still wouldn't show the cracks, so having those extra vertices was not a bad option

this was justifiable for looks in this case where performance didn't go down

[deft fiber]

Simply painted on seams are often perfectly good likewise

[livid viper]

coming back to lightmap packing, yeah it was pretty horrendous to say the least 😂

hence why I opted for generated uv's

[livid viper]

could do a high to low bake next time and make those cracks and crevices a bit more pronounced like you said

thanks for help

[deft fiber]

Since the shape is very simple, you can get a lot of use from generic seam, crack and other types of detail textures ^^

[livid viper]

Will definitely do that next time around in that case

[foggy monolith]

oh okay interesing.. will give that a shot, thanks!

nice! that seemed to be on the right track, 3d objects now appear to be recieving most lighting, except the entire environment section appears to still not work, and the 2D sprites dont seem to be receiving light (thats the main thing im trying to get work)

ah! wait i seemed to have figured it out, i created a new 2D URP Renderer and made sure it was in both quality and graphics settings, then added a Global 2D light and everything seems all good!

[livid viper]

back again with another question, what causes this green color to appear after a bake, only green thing that's in my scene is my hdri

is there a way to fix this or minimize the effect

I've got my indirect multiplier set to 0 already

really wonder where this colors get sampled from

[deft fiber]

Initially it looks like a texture compression artifact to me

[deft fiber]

Indirect multiplier of what? Usually indirect lighting is what you want when baking

[livid viper]

dir light

those colors get a lot worse when I have it enabled

you'll get all colors of the rainbow

[livid viper]

did a bake without compression too, same results bit less noise overall

was thinking of leaving out my hdri cubemap and rebake it

[deft fiber]

Baking with/without multiple importance sampling setting can have some effect if the sky is being sampled incorrectly, but it's a bit of a stab in the dark

[livid viper]

I'll have to look into that

[livid viper]

is there any documentation on it?

[deft fiber]

https://forum.unity.com/threads/lightmapping-troubleshooting-guide.1340936/
chapter 14 talks about it, though problems related to it are usually in the form of visual noise

[livid viper]

going to be quite a rabbit hole to dive into

[misty hearth]

how can i make it so the light doesnt go over the sprite but instead, the sprite blocks the light

[deft fiber]

The 2D shadow caster component should have a property that controls its "depth"

[misty hearth]

closest i have managed to do is play around with the shadow caster 2d. I had to make my flashlight shadow strength to 1. (i was hoping to have it at around 0.4) but cant find a solution.

[deft fiber]

"Shadow strength" basically makes all shadow casters translucent by preventing it from fully blocking the light
You logically can't have it block the light and also not block the light at the same time

[misty hearth]

I know what you mean. Isn't there a line of code or something to put on the object with the sprite renderer to block light?

i hope that makes sense

[teal vale]

Hi Guys, is there any way to make that shadow inside Red line to make it smoother?

[subtle night]

scene view

game view

doesn't show the skymap in gameview!!

[deft fiber]

Is it not blocking light in your latest screenshot?

[deft fiber]

It's a bit vague what you mean by "smoother" but if you mean the colors splitting into bands in a crunchy way you should be able to enable "dithering" on the camera or post processing

[arctic isle]

Most likely something to do with your camera clear flags

[subtle night]

yeah

solved

in camera setting it was set to solid colour

[random geode]

Hello. I encountered this light leakage bug.
Spotlights have this strange lit line below them (the right part). It's for all spotlights. I already tried playing with basically every light setting I can, including setting the render mode to Important.
How do i fix that?

[misty hearth]

it is. But not how I wanted it. It is okay for now and testing purposes

[keen notch]

Does any1 know what could be causing a consistent an immediate crash when generating lightmaps? This randomly started happening today, many different versions and newly created projects are affected.

Currently using 2021.3.27f1

[keen notch]

Just migrated to 2021.3.32f1 and the same issue persists

[weary fossil]

how do you guys get world lighting that casts shadows in unity 2D?