Add glseg junk.

src/p_polyobj.c

@@ -400,6 +400,8 @@ static void Polyobj_findSegs(polyobj_t *po, seg_t *seg)
 		// Find backfacings
 		for (s = 0;  s < numsegs; s++)
 		{
+			if (segs[s].glseg)
+				continue;
 			if (segs[s].linedef == seg->linedef
 				&& segs[s].side == 1)
 			{
@@ -436,6 +438,8 @@ newseg:
 	// seg's ending vertex.
 	for (i = 0; i < numsegs; ++i)
 	{
+		if (segs[i].glseg)
+			continue;
 		if (segs[i].side != 0) // needs to be frontfacing
 			continue;
 		if (segs[i].v1->x == seg->v2->x && segs[i].v1->y == seg->v2->y)
@@ -460,6 +464,9 @@ newseg:
 				// Find backfacings
 				for (q = 0;  q < numsegs; q++)
 				{
+					if (segs[q].glseg)
+						continue;
+
 					if (segs[q].linedef == segs[i].linedef
 						&& segs[q].side == 1)
 					{
@@ -606,6 +613,9 @@ static void Polyobj_spawnPolyObj(INT32 num, mobj_t *spawnSpot, INT32 id)
 		INT32 poflags = POF_SOLID|POF_TESTHEIGHT|POF_RENDERSIDES;
 		INT32 parentID = 0, potrans = 0;
 
+		if (seg->glseg)
+			continue;
+
 		if (seg->side != 0) // needs to be frontfacing
 			continue;
 

src/r_bsp.c

@@ -1169,9 +1169,11 @@ static void R_Subsector(size_t num)
 	while (count--)
 	{
 //		CONS_Debug(DBG_GAMELOGIC, "Adding normal line %d...(%d)\n", line->linedef-lines, leveltime);
+		if (!line->glseg
 #ifdef POLYOBJECTS
-		if (!line->polyseg) // ignore segs that belong to polyobjects
+		&& !line->polyseg // ignore segs that belong to polyobjects
 #endif
+		)
 		R_AddLine(line);
 		line++;
 		curline = NULL; /* cph 2001/11/18 - must clear curline now we're done with it, so stuff doesn't try using it for other things */

src/r_defs.h

@@ -598,6 +598,7 @@ typedef struct seg_s
 	polyobj_t *polyseg;
 	boolean dontrenderme;
 #endif
+	boolean glseg;
 } seg_t;
 
 //

src/r_segs.c

@@ -315,6 +315,10 @@ void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2)
 
 	// hack translucent linedef types (900-909 for transtables 1-9)
 	ldef = curline->linedef;
+
+	if (curline->glseg)
+		return;
+
 	switch (ldef->special)
 	{
 		case 900: