- GL handling of new portal data organization.

This also fixes some oversights with plane and horizon portals which were included in several checks.

src/gl/data/gl_portaldata.cpp

@@ -356,7 +356,7 @@ static void CollectPortalSectors(FPortalMap &collection)
 		for (int j = 0; j < 2; j++)
 		{
 			int ptype = sec->GetPortalType(j);
-			if (ptype== SKYBOX_STACKEDSECTORTHING || ptype == SKYBOX_PORTAL || ptype == SKYBOX_LINKEDPORTAL)	// only offset-displacing portal types
+			if (ptype== PORTS_STACKEDSECTORTHING || ptype == PORTS_PORTAL || ptype == PORTS_LINKEDPORTAL)	// only offset-displacing portal types
 			{
 				FPortalID id = { sec->GetPortalDisplacement(j) };
 

src/gl/scene/gl_fakeflat.cpp

@@ -69,10 +69,12 @@ bool gl_CheckClip(side_t * sidedef, sector_t * frontsector, sector_t * backsecto
 	// Mirrors and horizons always block the view
 	//if (linedef->special==Line_Mirror || linedef->special==Line_Horizon) return true;
 
-	// Lines with stacked sectors must never block!
+	// Lines with portals must never block.
-
+	// Portals which require the sky flat are excluded here, because for them the special sky semantics apply.
-	if (backsector->portals[sector_t::ceiling] != NULL || backsector->portals[sector_t::floor] != NULL ||
+	if (!(frontsector->GetPortal(sector_t::ceiling)->mFlags & PORTSF_SKYFLATONLY) ||
-		frontsector->portals[sector_t::ceiling] != NULL || frontsector->portals[sector_t::floor] != NULL)
+		!(frontsector->GetPortal(sector_t::floor)->mFlags & PORTSF_SKYFLATONLY) ||
+		!(backsector->GetPortal(sector_t::ceiling)->mFlags & PORTSF_SKYFLATONLY) ||
+		!(backsector->GetPortal(sector_t::floor)->mFlags & PORTSF_SKYFLATONLY))
 	{
 		return false;
 	}

src/gl/scene/gl_flats.cpp

@@ -491,8 +491,6 @@ void GLFlat::Process(sector_t * model, int whichplane, bool fog)
 
 	if (!fog)
 	{
-		if (plane.texture==skyflatnum) return;
-
 		gltexture=FMaterial::ValidateTexture(plane.texture, false, true);
 		if (!gltexture) return;
 		if (gltexture->tex->isFullbright()) 
@@ -558,6 +556,7 @@ void GLFlat::SetFrom3DFloor(F3DFloor *rover, bool top, bool underside)
 void GLFlat::ProcessSector(sector_t * frontsector)
 {
 	lightlist_t * light;
+	FSectorPortal *port;
 
 #ifdef _DEBUG
 	if (frontsector->sectornum == gl_breaksec)
@@ -589,25 +588,22 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 
 		lightlevel = gl_ClampLight(frontsector->GetFloorLight());
 		Colormap = frontsector->ColorMap;
-		if ((stack = (frontsector->portals[sector_t::floor] != NULL)))
+		port = frontsector->ValidatePortal(sector_t::floor);
+		if ((stack = (port != NULL)))
 		{
-			if (!frontsector->PortalBlocksView(sector_t::floor))
+			if (port->mType == PORTS_STACKEDSECTORTHING)
 			{
-				if (sector->SkyBoxes[sector_t::floor]->special1 == SKYBOX_STACKEDSECTORTHING)
+				gl_drawinfo->AddFloorStack(sector);	// stacked sector things require visplane merging.
-				{
-					gl_drawinfo->AddFloorStack(sector);
 			}
 			alpha = frontsector->GetAlpha(sector_t::floor) / 65536.0f;
 		}
 		else
-			{
-				alpha = 1.f;
-			}
-		}
-		else
 		{
 			alpha = 1.0f - frontsector->GetReflect(sector_t::floor);
 		}
+
+		if (alpha != 0.f && sector->GetTexture(sector_t::floor) != skyflatnum)
+		{
 			if (frontsector->VBOHeightcheck(sector_t::floor))
 			{
 				vboindex = frontsector->vboindex[sector_t::floor];
@@ -632,7 +628,8 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 				Colormap.CopyFrom3DLight(light);
 			}
 			renderstyle = STYLE_Translucent;
-		if (alpha != 0.0f) Process(frontsector, false, false);
+			Process(frontsector, false, false);
+		}
 	}
 
 	//
@@ -650,26 +647,22 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 
 		lightlevel = gl_ClampLight(frontsector->GetCeilingLight());
 		Colormap = frontsector->ColorMap;
-		if ((stack = (frontsector->portals[sector_t::ceiling] != NULL)))
+		port = frontsector->ValidatePortal(sector_t::ceiling);
+		if ((stack = (port != NULL)))
 		{
-			if (!frontsector->PortalBlocksView(sector_t::ceiling))
+			if (port->mType == PORTS_STACKEDSECTORTHING)
-			{
-				if (sector->SkyBoxes[sector_t::ceiling]->special1 == SKYBOX_STACKEDSECTORTHING)
 			{
 				gl_drawinfo->AddCeilingStack(sector);
 			}
 			alpha = frontsector->GetAlpha(sector_t::ceiling) / 65536.0f;
 		}
 		else
-			{
-				alpha = 1.f;
-			}
-		}
-		else
 		{
 			alpha = 1.0f - frontsector->GetReflect(sector_t::ceiling);
 		}
 
+		if (alpha != 0.f && sector->GetTexture(sector_t::ceiling) != skyflatnum)
+		{
 			if (frontsector->VBOHeightcheck(sector_t::ceiling))
 			{
 				vboindex = frontsector->vboindex[sector_t::ceiling];
@@ -694,7 +687,8 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 				Colormap.CopyFrom3DLight(light);
 			}
 			renderstyle = STYLE_Translucent;
-		if (alpha != 0.0f) Process(frontsector, true, false);
+			Process(frontsector, true, false);
+		}
 	}
 
 	//

src/gl/scene/gl_portal.cpp

@@ -644,7 +644,8 @@ void GLSkyboxPortal::DrawContents()
 	}
 
 	skyboxrecursion++;
-	origin->flags |= MF_JUSTHIT;
+	AActor *origin = portal->mSkybox;
+	portal->mFlags |= PORTSF_INSKYBOX;
 	extralight = 0;
 
 	PlaneMirrorMode = 0;
@@ -672,7 +673,7 @@ void GLSkyboxPortal::DrawContents()
 	currentmapsection[mapsection >> 3] |= 1 << (mapsection & 7);
 
 	GLRenderer->DrawScene();
-	origin->flags &= ~MF_JUSTHIT;
+	portal->mFlags &= ~PORTSF_INSKYBOX;
 	inskybox = false;
 	gl_RenderState.SetDepthClamp(oldclamp);
 	skyboxrecursion--;
@@ -1180,7 +1181,7 @@ void GLHorizonPortal::DrawContents()
 void GLEEHorizonPortal::DrawContents()
 {
 	PortalAll.Clock();
-	sector_t *sector = origin->Sector;
+	sector_t *sector = portal->mOrigin;
 	if (sector->GetTexture(sector_t::floor) == skyflatnum ||
 		sector->GetTexture(sector_t::ceiling) == skyflatnum)
 	{
@@ -1195,7 +1196,7 @@ void GLEEHorizonPortal::DrawContents()
 		horz.plane.GetFromSector(sector, true);
 		horz.lightlevel = gl_ClampLight(sector->GetCeilingLight());
 		horz.colormap = sector->ColorMap;
-		if (origin->special1 == SKYBOX_PLANE)
+		if (portal->mType == PORTS_PLANE)
 		{
 			horz.plane.Texheight = ViewPos.Z + fabs(horz.plane.Texheight);
 		}
@@ -1208,7 +1209,7 @@ void GLEEHorizonPortal::DrawContents()
 		horz.plane.GetFromSector(sector, false);
 		horz.lightlevel = gl_ClampLight(sector->GetFloorLight());
 		horz.colormap = sector->ColorMap;
-		if (origin->special1 == SKYBOX_PLANE)
+		if (portal->mType == PORTS_PLANE)
 		{
 			horz.plane.Texheight = ViewPos.Z - fabs(horz.plane.Texheight);
 		}

src/gl/scene/gl_portal.h

@@ -266,20 +266,20 @@ public:
 
 struct GLSkyboxPortal : public GLPortal
 {
-	AActor * origin;
+	FSectorPortal * portal;
 
 protected:
 	virtual void DrawContents();
-	virtual void * GetSource() const { return origin; }
+	virtual void * GetSource() const { return portal; }
 	virtual bool IsSky() { return true; }
 	virtual const char *GetName();
 
 public:
 
 	
-	GLSkyboxPortal(AActor * pt)
+	GLSkyboxPortal(FSectorPortal * pt)
 	{
-		origin=pt;
+		portal=pt;
 	}
 
 };
@@ -377,20 +377,20 @@ public:
 
 struct GLEEHorizonPortal : public GLPortal
 {
-	AActor * origin;
+	FSectorPortal * portal;
 
 protected:
 	virtual void DrawContents();
-	virtual void * GetSource() const { return origin; }
+	virtual void * GetSource() const { return portal; }
 	virtual bool NeedDepthBuffer() { return false; }
 	virtual bool NeedCap() { return false; }
 	virtual const char *GetName();
 
 public:
 	
-	GLEEHorizonPortal(AActor *pt)
+	GLEEHorizonPortal(FSectorPortal *pt)
 	{
-		origin=pt;
+		portal=pt;
 	}
 
 };

src/gl/scene/gl_sky.cpp

@@ -134,35 +134,44 @@ void GLSkyInfo::init(int sky1, PalEntry FadeColor)
 void GLWall::SkyPlane(sector_t *sector, int plane, bool allowreflect)
 {
 	int ptype = -1;
-	FPortal *portal = sector->portals[plane];
+
-	if (portal != NULL)
+	FSectorPortal *sportal = sector->ValidatePortal(plane);
+	if (sportal != nullptr && sportal->mFlags & PORTSF_INSKYBOX) sportal = nullptr;	// no recursions, delete it here to simplify the following code
+
+	// Either a regular sky or a skybox with skyboxes disabled
+	if ((sportal == nullptr && sector->GetTexture(plane) == skyflatnum) || (gl_noskyboxes && sportal != nullptr && sportal->mType == PORTS_SKYVIEWPOINT))
+	{
+		GLSkyInfo skyinfo;
+		skyinfo.init(sector->sky, Colormap.FadeColor);
+		ptype = PORTALTYPE_SKY;
+		sky = UniqueSkies.Get(&skyinfo);
+	}
+	else if (sportal != nullptr)
+	{
+		switch (sportal->mType)
+		{
+		case PORTS_STACKEDSECTORTHING:
+		case PORTS_PORTAL:
+		case PORTS_LINKEDPORTAL:
+		{
+			FPortal *glport = sector->portals[plane];
+			if (glport != NULL)
 			{
 				if (sector->PortalBlocksView(plane)) return;
 
 				if (GLPortal::instack[1 - plane]) return;
 				ptype = PORTALTYPE_SECTORSTACK;
-		this->portal = portal;
+				portal = glport;
+			}
+			break;
 		}
-	else
-	{
-		ASkyViewpoint * skyboxx = sector->GetSkyBox(plane);
-		if (sector->GetTexture(plane) == skyflatnum || (skyboxx != NULL && skyboxx->bAlways))
-		{
-			GLSkyInfo skyinfo;
 
-			// JUSTHIT is used as an indicator that a skybox is in use.
+		case PORTS_SKYVIEWPOINT:
-			// This is to avoid recursion
+		case PORTS_HORIZON:
-
+		case PORTS_PLANE:
-			if (!gl_noskyboxes && skyboxx && GLRenderer->mViewActor != skyboxx && !(skyboxx->flags&MF_JUSTHIT))
-			{
 			ptype = PORTALTYPE_SKYBOX;
-				skybox = skyboxx;
+			secportal = sportal;
-			}
+			break;
-			else
-			{
-				skyinfo.init(sector->sky, Colormap.FadeColor);
-				ptype = PORTALTYPE_SKY;
-				sky = UniqueSkies.Get(&skyinfo);
 		}
 	}
 	else if (allowreflect && sector->GetReflect(plane) > 0)
@@ -172,7 +181,6 @@ void GLWall::SkyPlane(sector_t *sector, int plane, bool allowreflect)
 		ptype = PORTALTYPE_PLANEMIRROR;
 		planemirror = plane == sector_t::ceiling ? &sector->ceilingplane : &sector->floorplane;
 	}
-	}
 	if (ptype != -1)
 	{
 		PutPortal(ptype);
@@ -188,17 +196,17 @@ void GLWall::SkyPlane(sector_t *sector, int plane, bool allowreflect)
 
 void GLWall::SkyLine(sector_t *fs, line_t *line)
 {
-	ASkyViewpoint * skyboxx = line->skybox;
+	FSectorPortal *secport = line->GetTransferredPortal();
 	GLSkyInfo skyinfo;
 	int ptype;
 
 	// JUSTHIT is used as an indicator that a skybox is in use.
 	// This is to avoid recursion
 
-	if (!gl_noskyboxes && skyboxx && GLRenderer->mViewActor != skyboxx && !(skyboxx->flags&MF_JUSTHIT))
+	if (!gl_noskyboxes && secport && (secport->mSkybox == nullptr || !(secport->mFlags & PORTSF_INSKYBOX)))
 	{
 		ptype = PORTALTYPE_SKYBOX;
-		skybox = skyboxx;
+		secportal = secport;
 	}
 	else
 	{
@@ -206,6 +214,10 @@ void GLWall::SkyLine(sector_t *fs, line_t *line)
 		ptype = PORTALTYPE_SKY;
 		sky = UniqueSkies.Get(&skyinfo);
 	}
+	ztop[0] = zceil[0];
+	ztop[1] = zceil[1];
+	zbottom[0] = zfloor[0];
+	zbottom[1] = zfloor[1];
 	PutPortal(ptype);
 }
 
@@ -223,15 +235,6 @@ void GLWall::SkyNormal(sector_t * fs,vertex_t * v1,vertex_t * v2)
 	zbottom[1]=zceil[1];
 	SkyPlane(fs, sector_t::ceiling, true);
 
-	if (seg->linedef->skybox != NULL)
-	{
-		ztop[0] = zceil[0];
-		ztop[1] = zceil[1];
-		zbottom[0] = zfloor[0];
-		zbottom[1] = zfloor[1];
-		SkyLine(fs, seg->linedef);
-	}
-
 	ztop[0]=zfloor[0];
 	ztop[1]=zfloor[1];
 	zbottom[0]=zbottom[1]=-32768.0f;
@@ -312,7 +315,7 @@ void GLWall::SkyTop(seg_t * seg,sector_t * fs,sector_t * bs,vertex_t * v1,vertex
 		else
 		{
 			int type = fs->GetPortalType(sector_t::ceiling);
-			if (type == SKYBOX_STACKEDSECTORTHING || type == SKYBOX_PORTAL || type == SKYBOX_LINKEDPORTAL)
+			if (type == PORTS_STACKEDSECTORTHING || type == PORTS_PORTAL || type == PORTS_LINKEDPORTAL)
 			{
 				FPortal *pfront = fs->GetGLPortal(sector_t::ceiling);
 				FPortal *pback = bs->GetGLPortal(sector_t::ceiling);
@@ -391,7 +394,7 @@ void GLWall::SkyBottom(seg_t * seg,sector_t * fs,sector_t * bs,vertex_t * v1,ver
 		else
 		{
 			int type = fs->GetPortalType(sector_t::floor);
-			if (type == SKYBOX_STACKEDSECTORTHING || type == SKYBOX_PORTAL || type == SKYBOX_LINKEDPORTAL)
+			if (type == PORTS_STACKEDSECTORTHING || type == PORTS_PORTAL || type == PORTS_LINKEDPORTAL)
 			{
 				FPortal *pfront = fs->GetGLPortal(sector_t::floor);
 				FPortal *pback = bs->GetGLPortal(sector_t::floor);

src/gl/scene/gl_wall.h

@@ -149,7 +149,7 @@ public:
 	union
 	{
 		// it's either one of them but never more!
-		AActor * skybox;			// for skyboxes
+		FSectorPortal *secportal;	// sector portal (formerly skybox)
 		GLSkyInfo * sky;			// for normal sky
 		GLHorizonInfo * horizon;	// for horizon information
 		FPortal * portal;			// stacked sector portals

src/gl/scene/gl_walls.cpp

@@ -174,12 +174,12 @@ void GLWall::PutPortal(int ptype)
 		break;
 
 	case PORTALTYPE_SKYBOX:
-		portal = GLPortal::FindPortal(skybox);
+		portal = GLPortal::FindPortal(secportal);
 		if (!portal)
 		{
 			// either a regular skybox or an Eternity-style horizon
-			if (skybox->special1 != SKYBOX_SKYVIEWPOINT) portal = new GLEEHorizonPortal(skybox);
+			if (secportal->mType != PORTS_SKYVIEWPOINT) portal = new GLEEHorizonPortal(secportal);
-			else portal = new GLSkyboxPortal(skybox);
+			else portal = new GLSkyboxPortal(secportal);
 		}
 		portal->AddLine(this);
 		break;
@@ -1479,7 +1479,11 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 			zbottom[1] = zfloor[1];
 			PutPortal(PORTALTYPE_LINETOLINE);
 		}
-		else if (seg->linedef->skybox == NULL && !seg->linedef->isVisualPortal())
+		else if (seg->linedef->portaltransferred > 0)
+		{
+			SkyLine(frontsector, seg->linedef);
+		}
+		else
 		{
 			// normal texture
 			gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::mid), false, true);

src/p_saveg.cpp

@@ -415,7 +415,7 @@ void P_SerializeWorld (FArchive &arc)
 		arc << li->args[1] << li->args[2] << li->args[3] << li->args[4];
 
 			arc << li->portalindex;
-			arc << li->skybox;	// GZDoom addition.
+			arc << li->portaltransferred;	// GZDoom addition.
 
 		for (j = 0; j < 2; j++)
 		{

src/p_spec.cpp

@@ -975,14 +975,14 @@ static void CopyPortal(int sectortag, int plane, unsigned pnum, double alpha, bo
 		{
 			if (lines[j].args[0] == 0)
 			{
-				lines[j].skybox = origin;
+				lines[j].portaltransferred = pnum;
 			}
 			else
 			{
 				FLineIdIterator itr(lines[j].args[0]);
 				while ((s = itr.Next()) >= 0)
 				{
-					lines[s].skybox = origin;
+					lines[s].portaltransferred = pnum;
 				}
 			}
 		}

src/r_defs.h

@@ -975,6 +975,7 @@ public:
 	void ClearPortal(int plane)
 	{
 		Portals[plane] = 0;
+		portals[plane] = nullptr;
 	}
 
 	FSectorPortal *GetPortal(int plane)
@@ -1152,7 +1153,6 @@ public:
 	float GetReflect(int pos) { return gl_plane_reflection_i? reflect[pos] : 0; }
 	bool VBOHeightcheck(int pos) const { return vboheight[pos] == GetPlaneTexZ(pos); }
 	FPortal *GetGLPortal(int plane) { return portals[plane]; }
-	void ClearPortal(int plane) { portals[plane] = nullptr;	SkyBoxes[plane] = nullptr; }
 
 	enum
 	{
@@ -1404,7 +1404,7 @@ public:
 	int 		validcount;	// if == validcount, already checked
 	int			locknumber;	// [Dusk] lock number for special
 	unsigned	portalindex;
-	TObjPtr<ASkyViewpoint> skybox;
+	unsigned	portaltransferred;
 
 	DVector2 Delta() const
 	{
@@ -1421,6 +1421,11 @@ public:
 		Alpha = FLOAT2FIXED(a);
 	}
 
+	FSectorPortal *GetTransferredPortal()
+	{
+		return portaltransferred >= sectorPortals.Size() ? (FSectorPortal*)NULL : &sectorPortals[portaltransferred];
+	}
+
 	FLinePortal *getPortal() const
 	{
 		return portalindex >= linePortals.Size() ? (FLinePortal*)NULL : &linePortals[portalindex];