It's really dark outside with certain graphics mods

[hwnde]

I decided to install some texture/model mods and see how OpenGothic handles them. The mods seem to work correctly but with one major problem: it's really dark outside.

Here are the mods I tried:
Gothic II TextureMix by ARTstuff - https://www.nexusmods.com/gothic2/mods/15

Gothic II Graphics Overhaul https://www.nexusmods.com/gothic2/mods/4

Riisis Texture Mix https://www.nexusmods.com/gothic2/mods/3

[Try]

Reproduced with "Gothic II TextureMix by ARTstuff"
Seem to be a general problem with exposure calculation - working on it

[Try]

With new exposure calculation:

[hwnde]

Much better!

I would argue that it should be a bit brighter still given that it's midday and the sun is not obstructed by anything but I'm okay if that's a stylistic choice.
I did notice another issue though: looks like the knight armor mesh is broken (see the screenshot)

[Try]

I would argue that it should be a bit brighter still given that it's midday and the sun is not obstructed by anything but I'm okay if that's a stylistic choice.

At this point I'm struggling to formalize how lighting should work and exposure is only a tip on iceberg. And the rest is #510 - would need to figure lighting and then come back to exposure.

[Try]

Some progress (as part of GI work):