3D Omni Lights cut in half after exporting to Web

[MerchantZoro]

Tested versions

v4.2.2

System information

Windows 10

Issue description

The Omni Lights get cut in half and the directional light also acts weird, I’m assuming It's because the browser renderer is different. How can I fix this?

Steps to reproduce

In editor, lights work fine, export to web, and lights are weird

Minimal reproduction project (MRP)

[AThousandShips]

Please upload an MRP to make this easier to test:

• A small Godot project which reproduces the issue, with no unnecessary files included. Be sure to not include the .godot folder in the archive (but keep project.godot).
• Having an MRP is very important for contributors to be able to reproduce the bug in the same way that you are experiencing it. When testing a potential fix for the issue, contributors will use the MRP to validate that the fix is working as intended.
• Drag and drop a ZIP archive to upload it (max 10 MB). Do not select another field until the project is done uploading.
• Note for C# users: If your issue is not C#-specific, please upload a minimal reproduction project written in GDScript. This will make it easier for contributors to reproduce the issue locally as not everyone has a .NET setup available.

[MerchantZoro]

When I create a new project with just an omni light and a camera, it works fine when exporting to web But on my main game it doesn't, can I just send you my whole project?

[AThousandShips]

Please strip down your project by removing parts until it is the smallest that replicates the bug, don't upload a full game project

[MerchantZoro]

Ok here it is, its a large file still so I had to zip it into google drive Like I said, in the editor it will look fine but when you export to web the lights get all messed up Thank you brother https://drive.google.com/file/d/11Tx5OgvvEzqrotooduk71FKKfzGk6Emz/view?usp=sharing

[AThousandShips]

That's not a minimal project, please reduce the size

Also please don't call me a "brother", I'm a woman :)

[MerchantZoro]

I have reduced the size a lot already, only the enemy with the messed lights spawns Like I said before, if I create a new project the lights work fine so its something in the original project that I don't know

Please check the project out, I'm desperate to find a solution xD

[AThousandShips]

That project isn't minimal, please remove more until only the issue remains, over 700 mb is far too big, you can remove unnecessary assets and such

I would test this if the project was of a reasonable size, but a complete working project isn't appropriate as an MRP, it would be far too much work to try to identify the problem from that

[Calinou]

Please switch to the Compatibility rendering method in the top-right corner of the editor, so you can preview your project as it'll look like in the web export (nonwithstanding web-specific bugs).

You are likely hitting a light count limit (only a certain number of positional lights may light up each mesh resource). To avoid this, use fewer lights or split your MeshInstance3D nodes into smaller meshes. You can also adjust the limits when using Compatibility as described in the link, but this should be done as a last resort as it'll impact performance on low-end devices (especially on mobile).

[MerchantZoro]

I am in compatibility renderer and with only 1 light the problem persists

I am currently trying to size down the project but I can only get it to 700 Mbs, idk if you guys ok with that It can't be much lower otherwise the problem won't exist

[MerchantZoro]

I am in compatibility mode and its still different from editor to export

Even with just 1 light the problem still remains the same Please help

[AThousandShips]

We will help if you provide something that's reasonable to test with, a single scene with just the content necessary to reproduce the bug, unless you have a single scene that takes over 700 megabytes that's not what the files you linked are (unless you forgot the instruction to not include the .godot folder, that could take a lot of space)

[MerchantZoro]

For that I would need to change the code of the game a lot, I have a lot of scripts interacting with each other and if I delete too many scenes the game stops working entirely Already got some errors by just sizing down a bit I believe if you open the project you won't have a hard time navigating it tho, the "demon_skull" entity has the light problem

[AThousandShips]

It's much easier if you recreate the issue yourself and make an easy to access MRP

The MRP isn't about proving that the bug is there, but figuring out what is causing it, a project that is that large and complicated is very difficult to break down and identify, so please make a project that allows us to do that so that we can solve this bug

[MerchantZoro]

I have done that before, when I create a new project the problem is not there, something in the main project is wrong

[AThousandShips]

That's the reason you need to find what makes it happen and make a project with that, by either working backwards removing parts that aren't relevant, or by building up from nothing to find specifics

But since it won't happen in a new project it must be more specific, and it's a lot of work to pick out what actually causes that, that's why we're asking you to try to do that to help the process

So if you upload a minimal project we can continue investigating this

[ethanp4]

I'm getting a similar issue in editor and in a Linux export. v4.3 on Linux mint I'm not sure when the issue began, I only noticed once I added textures while following this tutorial heres a very small project with the issue minecraft-3.0.zip

Going backwards in versions the issue persisted in 4.2.2 but not 4.1.4

Edit: Fixed this by using SurfaceTool.generate_normals()

[MerchantZoro]

Where did you use SurfaceTool.generate_normals()

[ethanp4]

I used it before setting the mesh of my mesh_instance since I'm creating the meshes entirely using SurfaceTool but it seems like you can use an existing mesh with SurfaceTool.create_from

this is where im using it

surface_tool.begin(Mesh.PrimitiveType.PRIMITIVE_TRIANGLES)
for x in range(DIMENSIONS.x):
    for y in range(DIMENSIONS.y):
        for z in range(DIMENSIONS.z):
            create_block_mesh(Vector3i(x,y,z))

surface_tool.generate_normals()
surface_tool.set_material(block_manager.chunk_material)
var mesh : ArrayMesh = surface_tool.commit()

mesh_instance.mesh = mesh
collision_shape.shape = mesh.create_trimesh_shape()