Bullet marks are too faint

[slipher]

The bullet hole marks made by, e.g., the rifle appear much fainter than they did as of the last release. While working on the mark IPC batching commit, I thought the mark batching code was broken for a while because the marks were so faint I didn't notice them.

The marks appear as before if you set r_forceLegacyOverbrightClamping 1.

[sweet235]

Or if you set r_mapOverBrightBits 0