Lightmap frustum culling on scaled objects

[passivestar]

Tested versions

v4.2.1.stable.official [b09f793]

System information

Godot v4.2.1.stable - macOS 14.2.1 - Vulkan (Forward+) - integrated Apple M1 Max - Apple M1 Max (10 Threads)

Issue description

Lightmap culling doesn't seem to take object scale into account?

culling.mp4

Steps to reproduce

Open MRP and scale LevelE_001

Minimal reproduction project (MRP)

MRP_Lightmaps.zip

[clayjohn]

I feel like different iterations of this bug keep popping up randomly.

If I am remembering correctly, we've discussed this before and agreed that the ideal solution is to disable culling for lightmaps. They are registered with the meshes that were baked with them, so if those meshes are visible, the lightmap should be visible.

[passivestar]

if those meshes are visible, the lightmap should be visible.

yeah that sounds reasonable to me

[Calinou]

Thanks for the report! Consolidating in #71585, as this is due to the same cause.