Set forceLegacyOverBrightClamping

[slipher]

The map generally looks worse with the newly enabled full overbright implementation. A lot of lights seem too bright. Lighting of models in the alien base is especially bad: the Overmind is bright despite being in a dark corner and an egg looks as if under bright sunlight.

[illwieckz]

The overmind being bright is because of the limitations of lightgrid. Relying on bugs to workaround lightgrid design limitations is not good.

I disagree with “The map generally looks worse with the newly enabled full overbright implementation”.

I toyed today with this map while experimenting with automatic specular map emulation as fallback for maps missing them, and I was very happy with the map having correct lighting. This becomes even more true when enabling specularirty since deluxe mapping is wrong when light is clamped.

[illwieckz]

Also if we find the light too bright, we better want to use a lower overbright factor and rebuild the map than clamping the light.