Are 2D Lights compatible with a Perspective Camera?

I’ve been messing around with the new lights and while they work for the most part, they seem to glitch out horribly on large sprites and when the Camera rotates on the X and Y axis. This is at least, when the Camera is set to Perspective. On Orthographic is seems fine. Are the 2D Lights compatible with a perspective camera? Is there anything I can do to get rid of the issues I listed?

 

I'm having the same issue. 2d lights seem not to work at all with perspective camera.

 

Can confirm - in 2021.1.15 they don't work at all with perspective camera - the only working is global 2d light

 

2D Lights still don't work with perspective camera in the official 2021.1.21 release.

There is a resolved bug report here: https://issuetracker.unity3d.com/is...when-using-2d-lighting-and-perspective-camera

But this has been resolved only for the beta release (2021.2.0a10)

Can someone please fix this issue in the official release?
This is critical for many game developers.

 

I'm at the unfortunate point now where I might need to strip out the 2D lights and rework everything with 3D lights. I have 3 weeks to port the game to switch (and actually finish the game) and I'm pulling my hair out.

 

Omg, that's amazing. Thanks so much. I've been stressing about this so much. Just got into the office this morning with a plan to rewrite the whole lighting of the game with 2 weeks left to launch. THANK YOU

 

Ah, thanks for this. I tried to get the package locally before but didn't manage it. I'll give this a go.

 

That seems to work great, thanks. The editor seems a lot slower, a lot of slowdowns in gameplay, but that's most likely a completely separate issue. (Builds run fine)

 

FYI - I installed the latest version (2021.1.22f1) and (for both of our workstations) playing the game in the editor was unplayable. Rolled back to 2021.1.20f1 and it's working fine again.

Not sure this is a known bug, just throwing it out there. We're totally up against it at the moment so no time to try get a simple repro to raise a bug report I'm afraid.

 

@kennyy_, can you confirm that this fix will make it into a 2021.1.x release (or not)?

 

is this still the way to fix the lights in perspective camera?
My lights are all over the place in Unity 2021.1.17f1

 

Worked for me in 2021.1.19f1

 

any date when its out? - I see you cant give relase date yet. Thanks!
I, like some other users are ready to launch game but can't due to the light -glitch :S
thnkas!

 

I just upgraded to 2021.1.24 and my 2D lights are still broken when using a perspective camera; this is using the URP-11.0.0 package.

I didn't see a 2D lighting fix mentioned in the 2021.1.24 release notes (maybe I missed it?). @kennyy_ , do you happen to know if the fix missed the 2021.1.24 release, and if it's maybe scheduled for a later release?

 

any update on this? hope the fix makes it in the next release.. really looking forward to starting lighting and LD with perspective cams.

[EDIT] Sadly light's still seem broken on 2021.1.25f1.

 

Going by the 2021.1.26f1 release notes it looks like the 2D perspective lighting fix didn't make it again.

 

Sad... is there a timeline on when 2021.2 will be out of BETA? any clue?

 

It workes for me in 2021.2.0b14 - but sadly I need it to work in 2021.1.17f1 since thats the version Im porting to conosle.

 

This worked now! I tried in the past but since you're not using . or 1. etc I just changed the line in the original folder. Im an idiot >_< So in case another dyslectic idiot like me sees this. Let me dummify it:

1. Copy Folder (com.unity.render-pipelines.core@11.0.0) -> To -> ProjectName/Packages.
- This Folder: com.unity.render-pipelines.core@11.0.0 is located in ProjectName/Library/PackageCache/com.unity.render-pipelines.core@11.0.0.

2. Once you have copied com.unity.render-pipelines.core@11.0.0 to ProjectName/Packages, open a file called sprite-Lit-Default.shader.
- Its now located in ProjectName/Packages/com.unity.render-pipelines.universal@11.0.0/Shaders/2D/Sprite-Lit-Default.shader

And change line 89 to

o.lightingUV = half2(ComputeScreenPos(o.positionCS / o.positionCS.w).xy);

 

Thank you.. this does work indeed. Now I just need to make sure I delete this new folder I created once the fix is officially released right?

 

Installed 2021.1.27f1 and confirmed that 2D lights are now working with perspective cameras. Thank you @kennyy_ for pushing that fix through the release pipeline.

 

Hello,

I've a similar problem with unity 2021.2.0f1, any plan to fix it ?

 

I'm seeing what sounds like a similar issue with perspective cameras: when using a perspective camera (even with no rotation) any x or y rotation on a sprite will cause the lighting to be in the wrong place. Works fine with orthographic cameras (see scene view), but perspective + x/y sprite rotation seems to cause problems (camera rotation does not).

This is with Unity 2021.3.10f1 and URP 12.1.7. @Chris_Chu @kennyy_ Is this something you'd expect to be working or is this scenario unsupported?

 

Correction: I saw the same behavior when rotating the camera by the same amount and with the sprite unrotated. I guess the issue is just lighting/shadows don't work with any kind of relative rotation.

 

For my project I ended up just manually editing the lit sprite shader (as described @kennyy_ above) to move the lighting uv calculation from the vertex shader to the fragment shader. This reduces performance, but fixes the issues I experienced.



Shader available here: https://gist.github.com/geolands/9a69d85fac3fe8102b0f77eadf003459