another alpha blend, it's set up exactly as another factor in determining
the final blend. This should help speed up framerates a little.
New cvars:
cl_cshift_bonus: Set to 0 to disable bonus flashes.
cl_cshift_contents: Set to 0 to disable content blends.
cl_cshift_damage: Set to 0 to disable damage blends.
cl_cshift_powerup: Set to 0 to disable powerup (quad, pent, etc) blends.
All of these cvars work for both GL and software, and all of them check
the value of the "cshifts" serverinfo. cshifts is a bit field, with the
following bits defined:
bonus: 1
contents: 2
damage: 4
powerup: 8
An admin can force any of these to be respected by choosing the numbers of
the cshifts to be enforced, and adding them up.
examples:
serverinfo cshifts 15
turns them all on.
serverinfo cshifts 10
turns on powerup and contents shifts.
also, the gl_cshiftpercent Cvar no longer does anything. I'll remove it
entirely soon.
view.h: Add brightness, contrast cvars as extern
menu.c: Change brightness scroller to use the brightness cvar, add
contrast scroller.
r_view, sw_view.c: Add brightness/contrast cvars to software, and make
them work.
