add DRAWFLAG_SCREEN (which basically is like invert-modulate-invert, equivalent to...
authordivverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 11 Oct 2008 15:06:28 +0000 (15:06 +0000)
committerdivverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 11 Oct 2008 15:06:28 +0000 (15:06 +0000)
commit971ad66cc21064832305abca4e356213dd513d9b
tree9f315185f6431e13e82c4da67dfd93bebf64afe5
parent17c0e4b259c935fb768e044cd66453f9f28a03d8
add DRAWFLAG_SCREEN (which basically is like invert-modulate-invert, equivalent to GIMP's "screen" layer operation, no idea how photoshop calls it)
Just like modulate always darkens, screen always brightens.

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@8528 d7cf8633-e32d-0410-b094-e92efae38249
clvm_cmds.c
draw.h
gl_draw.c