r8528 - trunk/darkplaces

[divverent at icculus.org]

Author: divverent
Date: 2008-10-11 11:06:28 -0400 (Sat, 11 Oct 2008)
New Revision: 8528

Modified:
   trunk/darkplaces/clvm_cmds.c
   trunk/darkplaces/draw.h
   trunk/darkplaces/gl_draw.c
Log is attached.
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.


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