Fun presentation by Valve from GDC:
http://www.slideshare.net/alexvlachos/gdc-2010-left4dead2-wounds
Almost entirely texture based, and performs well on almost all modern hardware despite how it work (texkill in the PS + alpha blend).
http://www.slideshare.net/alexvlachos/gdc-2010-left4dead2-wounds
Almost entirely texture based, and performs well on almost all modern hardware despite how it work (texkill in the PS + alpha blend).