moved BIH_LEAF from bih_nodetype_t to bih_leaftype_t renamed BIH_LEAF to BIH_BRUSH renamed BIH_LEAF + 1 to BIH_COLLISIONTRIANGLE renamed BIH_LEAF + 2 to BIH_RENDERTRIANGLE git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9984 d7cf8633-e32d-0410-b094-e92efae38249
implemented and debugged BIH (Bounding Interval Hierarchy) code, more optimizations possible but this is a good start mod_collision_bih cvar added, defaults to 0 because it is not yet consistently faster than q3bsp collisions git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9965 d7cf8633-e32d-0410-b094-e92efae38249
implementing Bounding Interval Hierarchy collision culling trees for q3bsp, not used yet git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9957 d7cf8633-e32d-0410-b094-e92efae38249