Defines
#define	OPTIMIZE_SAVEMATBOUNDRIES (1<<0)
	Specifies that faces won't be collapsed across a material boundary.
#define	OPTIMIZE_SAVESMOOTHBOUNDRIES (1<<1)
	Specifies that faces won't be collapsed across a dissimilar smoothing group boundary.
#define	OPTIMIZE_AUTOEDGE (1<<2)
	Specifies that the edge visibility should be set automatically based on the angle between adjacent surface normals.

Define Documentation

#define OPTIMIZE_SAVEMATBOUNDRIES (1<<0)

Specifies that faces won't be collapsed across a material boundary.

#define OPTIMIZE_SAVESMOOTHBOUNDRIES (1<<1)

Specifies that faces won't be collapsed across a dissimilar smoothing group boundary.

#define OPTIMIZE_AUTOEDGE (1<<2)

Specifies that the edge visibility should be set automatically based on the angle between adjacent surface normals.

This will only set edges as invisible

Optimization Flags