Defines
#define	EDGE_VIS 1
	Edge is visible.
#define	EDGE_INVIS 0
	Edge is invisible.
#define	VIS_BIT 0x0001
#define	VIS_MASK 0x0007
#define	EDGE_A (1<<0)
#define	EDGE_B (1<<1)
#define	EDGE_C (1<<2)
#define	EDGE_ALL (EDGE_A\|EDGE_B\|EDGE_C)
#define	FACE_HIDDEN (1<<3)
	Face visibility bit.
#define	HAS_TVERTS (1<<4)
#define	FACE_WORK (1<<5)
#define	FACE_STRIP (1<<6)
#define	FACE_NORM_A (1<<8)
#define	FACE_NORM_B (1<<9)
#define	FACE_NORM_C (1<<10)
#define	FACE_NORM_MASK 0x0700
#define	FACE_INFOREGROUND (1<<11)
	Used to track faces that are in the foreground.
#define	FACE_BACKFACING (1<<12)
	Used to track which faces are back facing.
#define	FACE_MATID_SHIFT 16
	The number of bits to shift the flags to access the material.
#define	FACE_MATID_MASK 0xFFFF
	A mask used to access the material ID.
#define	COMP_TRANSFORM 0x0001
	If set, it forces recalculate of model->screen transform.
#define	COMP_IGN_RECT 0x0002
	If set, it forces all polys to be rendered.
#define	COMP_LIGHTING 0x0004
	If set, it forces re-lighting of all verts (as when a light moves).
#define	COMP_ALL 0x00ff
	Combination of COMP_TRANSFORM, COMP_IGN_RECT and COMP_LIGHTING.
#define	COMP_OBJSELECTED (1<<8)
	If set, the node being displayed by this mesh is selected.
#define	COMP_OBJFROZEN (1<<9)
	If set, the node being displayed by this mesh is frozen.
#define	NORCT_MASK 0x000000ffUL
#define	SPECIFIED_NORMAL 0x00004000UL
#define	OUT_LEFT 0x00010000UL
#define	OUT_RIGHT 0x00020000UL
#define	OUT_TOP 0x00040000UL
#define	OUT_BOTTOM 0x00080000UL
#define	RECT_MASK 0x000f0000UL
#define	RND_MASK 0xfff00000UL
#define	RND_NOR0 0x00100000UL
#define	RND_NOR(n) (RND_NOR0 << (n))