fix 1580
Merge pull request #1720 from Flakebi/fpsCam

First person camera, fixes #1295
Fixe shadow without sdsm
Add some debug logging on linux
Rotate suncam

It might improve shadow quality
Draw RSM only once
Do not fill RSM command buffer if rsm map not redraw
Prevent some rsm computation when not needed
Add another marker
Merge pull request #1718 from quizywiz/fixing1580

fix #1580
Add missing counters
Filter OpenGL warnings to silence some unecessary noise
Improve smooth camera movement and move settings to user config