#ifdef MIRROR_DEBUG
VIEW* view_mirror = { layer = 1; }
#else
VIEW* view_mirror = { layer = -1; }  // render mirror view before camera view
#endif
BMAP* bmap_mirrortarget = NULL;
var mtlfx_mirrorvisible = 0;

//Simulate a horizontal mirror by generating
//a camera view from below through the floor
function fx_mirror()
{
// do nothing if mirror is already running
	if (bmap_mirrortarget) { 
		my.material.skin2 = bmap_mirrortarget;
		return; 
	}

	bmap_mirrortarget = bmap_createblack(256,256,888);
	my.material.skin2 = bmap_mirrortarget;
	view_mirror.bmap = bmap_mirrortarget;
	view_mirror.size_x = bmap_width(view_mirror.bmap);
	view_mirror.size_y = bmap_height(view_mirror.bmap);

	vec_set(view_mirror.pnormal_x,vector(0,0,1.0));	// reflect upwards
	set(view_mirror,NOSHADOW|NOCULL|PORTALCLIP);	
// suppress shadows in the mirror, look through walls, and clip at portal plane

//enable: Suppress FLAG1 in mirror
//help: Don't display FLAG1 objects in the mirror views
//id: 23
	set(view_mirror,NOFLAG1);	// suppress all entities with flag1 set

//enable: Suppress particles in mirror
//help: Don't display particles in the mirror views
//id: 24
	set(view_mirror,NOPARTICLE);

//enable: Suppress shaders in mirror
//help: Don't render material effects in the mirror views
//id: 25
	set(view_mirror,NOSHADER);

	while (bmap_mirrortarget)
	{
		proc_mode = PROC_LATE;	// camera must be moved and mtlfx_mirrorvisible set before
		if (mtlfx_mirrorvisible) 
		{ 
			set(view_mirror,SHOW);
			view_mirror.genius = camera.genius;
			view_mirror.aspect = (screen_size.x/screen_size.y)*camera.aspect; // screen aspect, independent of render target
			view_mirror.arc    = camera.arc;
			view_mirror.fog_start = camera.fog_start;
			view_mirror.fog_end   = camera.fog_end;
			view_mirror.clip_far  = camera.clip_far * 0.5;
			view_mirror.clip_near = camera.clip_near * 2;
			view_mirror.x 	   = camera.x;
			view_mirror.y 	   = camera.y;
			view_mirror.z 	   = 2*view_mirror.portal_z-camera.z;	// move the camera at its mirror position
			view_mirror.pan    = camera.pan;
			view_mirror.tilt   = -camera.tilt;	// flip the vertical camera angle
			view_mirror.roll   = -camera.roll;
		}
		else { 
// switch rendering off when all mirror objects are outside the frustum
			reset(view_mirror,SHOW); 
		}
		mtlfx_mirrorvisible = 0;

#ifdef MIRROR_DEBUG
		if (key_f11) {	// debugging - make mirror visible onscreen
			view_mirror.bmap = NULL;
		} else {
			view_mirror.bmap = bmap_mirrortarget;
		}	
#endif
		wait(1);
	}
}