Tested versions

4.4 Stable

System information

Windows 11 24H2 - Ryzen 7700X - 4070ti

Issue description

The Exposure multiplier in the tonemapper affects the lightmapping result.
Specific to the compatibility renderer, does not occur in forward+. Haven't tested mobile.
Changes only seem to occur when baking a scene that has been reloaded after the exposure was changed.
Similar to #104429

Exposure 8:

Exposure 1:

Exposure 1 rebaked:

Steps to reproduce

• Bake at exposure 8
• Drop exposure to 1
• Save and reload scene
• Bake lightmap

Minimal reproduction project (MRP)

compatbilityexposurereflbug.zip