Split FDrawInfo in two

Done so that the entire gl_renderhacks.cpp file can be moved out of the GL folder.
Not cleaned up yet

src/gl/renderer/gl_renderer.h

@@ -234,13 +234,7 @@ public:
 	static float GetZFar() { return 65536.f; }
 };
 
-enum area_t
+enum area_t : int;
-{
-	area_normal,
-	area_below,
-	area_above,
-	area_default
-};
 
 
 // Global functions. Make them members of GLRenderer later?

src/gl/scene/gl_drawinfo.cpp

@@ -1307,3 +1307,15 @@ void FDrawInfo::FloodLowerGap(seg_t * seg)
 	// Step3: Delete the stencil
 	ClearFloodStencil(&ws);
 }
+
+// This was temporarily moved out of gl_renderhacks.cpp so that the dependency on GLWall could be eliminated until things have progressed a bit.
+void FDrawInfo::ProcessLowerMinisegs(TArray<seg_t *> &lowersegs)
+{
+	for(unsigned int j=0;j<lowersegs.Size();j++)
+	{
+		seg_t * seg=lowersegs[j];
+		GLWall wall(mDrawer);
+		wall.ProcessLowerMiniseg(seg, seg->Subsector->render_sector, seg->PartnerSeg->Subsector->render_sector);
+		rendered_lines++;
+	}
+}

src/gl/scene/gl_drawinfo.h

@@ -105,7 +105,7 @@ struct SortNode
 
 struct GLDrawList
 {
-//private:
+	//private:
 	TArray<GLWall*> walls;
 	TArray<GLFlat*> flats;
 	TArray<GLSprite*> sprites;
@@ -174,18 +174,23 @@ struct gl_subsectorrendernode
 	subsector_t *				sub;
 };
 
-
+enum area_t : int
-struct FDrawInfo
 {
+	area_normal,
+	area_below,
+	area_above,
+	area_default
+};
+
+struct HWDrawInfo
+{
+	virtual ~HWDrawInfo() {}
+
 	struct wallseg
 	{
 		float x1, y1, z1, x2, y2, z2;
 	};
 	
-	bool temporary;
-
-
-
 	struct MissingTextureInfo
 	{
 		seg_t * seg;
@@ -197,7 +202,7 @@ struct FDrawInfo
 	struct MissingSegInfo
 	{
 		seg_t * seg;
-		int MTI_Index;	// tells us which MissingTextureInfo represents this seg.
+		int MTI_Index;    // tells us which MissingTextureInfo represents this seg.
 	};
 	
 	struct SubsectorHackInfo
@@ -206,12 +211,6 @@ struct FDrawInfo
 		uint8_t flags;
 	};
 	
-	GLSceneDrawer *mDrawer;
-
-	TArray<uint8_t> sectorrenderflags;
-	TArray<uint8_t> ss_renderflags;
-	TArray<uint8_t> no_renderflags;
-
 	TArray<MissingTextureInfo> MissingUpperTextures;
 	TArray<MissingTextureInfo> MissingLowerTextures;
 	
@@ -228,48 +227,68 @@ struct FDrawInfo
 	
 	TArray<subsector_t *> HandledSubsectors;
 	
+	TArray<uint8_t> sectorrenderflags;
+	TArray<uint8_t> ss_renderflags;
+	TArray<uint8_t> no_renderflags;
+	
+	
+	void ClearBuffers();
+	
+	bool DoOneSectorUpper(subsector_t * subsec, float planez, area_t in_area);
+	bool DoOneSectorLower(subsector_t * subsec, float planez, area_t in_area);
+	bool DoFakeBridge(subsector_t * subsec, float planez, area_t in_area);
+	bool DoFakeCeilingBridge(subsector_t * subsec, float planez, area_t in_area);
+	
+	bool CheckAnchorFloor(subsector_t * sub);
+	bool CollectSubsectorsFloor(subsector_t * sub, sector_t * anchor);
+	bool CheckAnchorCeiling(subsector_t * sub);
+	bool CollectSubsectorsCeiling(subsector_t * sub, sector_t * anchor);
+	void CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor, area_t in_area);
+	void CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor, area_t in_area);
+	
+	void AddUpperMissingTexture(side_t * side, subsector_t *sub, float backheight);
+	void AddLowerMissingTexture(side_t * side, subsector_t *sub, float backheight);
+	void HandleMissingTextures(area_t in_area);
+	void DrawUnhandledMissingTextures();
+	void AddHackedSubsector(subsector_t * sub);
+	void HandleHackedSubsectors();
+	void AddFloorStack(sector_t * sec);
+	void AddCeilingStack(sector_t * sec);
+	void ProcessSectorStacks(area_t in_area);
+	
+	void AddOtherFloorPlane(int sector, gl_subsectorrendernode * node);
+	void AddOtherCeilingPlane(int sector, gl_subsectorrendernode * node);
+	
+	virtual void FloodUpperGap(seg_t * seg) = 0;
+	virtual void FloodLowerGap(seg_t * seg) = 0;
+	virtual void ProcessLowerMinisegs(TArray<seg_t *> &lowersegs) = 0;
+	
+};
+
+struct FDrawInfo : public HWDrawInfo
+{
+	
+	GLSceneDrawer *mDrawer;
+	
+	
 	FDrawInfo * next;
 	GLDrawList drawlists[GLDL_TYPES];
 	GLDrawList *dldrawlists = NULL;	// only gets allocated when needed.
 	
 	FDrawInfo();
 	~FDrawInfo();
-	void ClearBuffers();
 	
 	void AddWall(GLWall *wall);
 	bool PutWallCompat(GLWall *wall, int passflag);	// Legacy GL only.
 	
-	bool DoOneSectorUpper(subsector_t * subsec, float planez);
-	bool DoOneSectorLower(subsector_t * subsec, float planez);
-	bool DoFakeBridge(subsector_t * subsec, float planez);
-	bool DoFakeCeilingBridge(subsector_t * subsec, float planez);
-
-	bool CheckAnchorFloor(subsector_t * sub);
-	bool CollectSubsectorsFloor(subsector_t * sub, sector_t * anchor);
-	bool CheckAnchorCeiling(subsector_t * sub);
-	bool CollectSubsectorsCeiling(subsector_t * sub, sector_t * anchor);
-	void CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor);
-	void CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor);
-
-	void AddUpperMissingTexture(side_t * side, subsector_t *sub, float backheight);
-	void AddLowerMissingTexture(side_t * side, subsector_t *sub, float backheight);
-	void HandleMissingTextures();
-	void DrawUnhandledMissingTextures();
-	void AddHackedSubsector(subsector_t * sub);
-	void HandleHackedSubsectors();
-	void AddFloorStack(sector_t * sec);
-	void AddCeilingStack(sector_t * sec);
-	void ProcessSectorStacks();
-
-	void AddOtherFloorPlane(int sector, gl_subsectorrendernode * node);
-	void AddOtherCeilingPlane(int sector, gl_subsectorrendernode * node);
 	
 	void StartScene();
 	void SetupFloodStencil(wallseg * ws);
 	void ClearFloodStencil(wallseg * ws);
 	void DrawFloodedPlane(wallseg * ws, float planez, sector_t * sec, bool ceiling);
-	void FloodUpperGap(seg_t * seg);
+	void FloodUpperGap(seg_t * seg) override;
-	void FloodLowerGap(seg_t * seg);
+	void FloodLowerGap(seg_t * seg) override;
+	void ProcessLowerMinisegs(TArray<seg_t *> &lowersegs) override;
 	
 	static void StartDrawInfo(GLSceneDrawer *drawer);
 	static void EndDrawInfo();

src/gl/scene/gl_renderhacks.cpp

@@ -55,7 +55,7 @@ static subsector_t * viewsubsector;
 static TArray<seg_t *> lowersegs;
 
 
-void FDrawInfo::ClearBuffers()
+void HWDrawInfo::ClearBuffers()
 {
 	for(unsigned int i=0;i< otherfloorplanes.Size();i++)
 	{
@@ -98,7 +98,7 @@ void FDrawInfo::ClearBuffers()
 //
 //==========================================================================
 
-void FDrawInfo::AddOtherFloorPlane(int sector, gl_subsectorrendernode * node)
+void HWDrawInfo::AddOtherFloorPlane(int sector, gl_subsectorrendernode * node)
 {
 	int oldcnt = otherfloorplanes.Size();
 
@@ -111,7 +111,7 @@ void FDrawInfo::AddOtherFloorPlane(int sector, gl_subsectorrendernode * node)
 	otherfloorplanes[sector] = node;
 }
 
-void FDrawInfo::AddOtherCeilingPlane(int sector, gl_subsectorrendernode * node)
+void HWDrawInfo::AddOtherCeilingPlane(int sector, gl_subsectorrendernode * node)
 {
 	int oldcnt = otherceilingplanes.Size();
 
@@ -130,7 +130,7 @@ void FDrawInfo::AddOtherCeilingPlane(int sector, gl_subsectorrendernode * node)
 // Collects all sectors that might need a fake ceiling
 //
 //==========================================================================
-void FDrawInfo::AddUpperMissingTexture(side_t * side, subsector_t *sub, float Backheight)
+void HWDrawInfo::AddUpperMissingTexture(side_t * side, subsector_t *sub, float Backheight)
 {
 	if (!side->segs[0]->backsector) return;
 
@@ -186,7 +186,7 @@ void FDrawInfo::AddUpperMissingTexture(side_t * side, subsector_t *sub, float Ba
 // Collects all sectors that might need a fake floor
 //
 //==========================================================================
-void FDrawInfo::AddLowerMissingTexture(side_t * side, subsector_t *sub, float Backheight)
+void HWDrawInfo::AddLowerMissingTexture(side_t * side, subsector_t *sub, float Backheight)
 {
 	sector_t *backsec = side->segs[0]->backsector;
 	if (!backsec) return;
@@ -259,7 +259,7 @@ void FDrawInfo::AddLowerMissingTexture(side_t * side, subsector_t *sub, float Ba
 // 
 //
 //==========================================================================
-bool FDrawInfo::DoOneSectorUpper(subsector_t * subsec, float Planez)
+bool HWDrawInfo::DoOneSectorUpper(subsector_t * subsec, float Planez, area_t in_area)
 {
 	// Is there a one-sided wall in this sector?
 	// Do this first to avoid unnecessary recursion
@@ -283,7 +283,7 @@ bool FDrawInfo::DoOneSectorUpper(subsector_t * subsec, float Planez)
 			// Note: if this is a real line between sectors
 			// we can be sure that render_sector is the real sector!
 
-			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, mDrawer->in_area, true);
+			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, in_area, true);
 
 			// Don't bother with slopes
 			if (sec->ceilingplane.isSlope())  return false;
@@ -304,7 +304,7 @@ bool FDrawInfo::DoOneSectorUpper(subsector_t * subsec, float Planez)
 				else return false;
 			}
 		}
-		if (!DoOneSectorUpper(backsub, Planez)) return false;
+		if (!DoOneSectorUpper(backsub, Planez, in_area)) return false;
 	}
 	// all checked ok. This subsector is part of the current fake plane
 
@@ -317,7 +317,7 @@ bool FDrawInfo::DoOneSectorUpper(subsector_t * subsec, float Planez)
 // 
 //
 //==========================================================================
-bool FDrawInfo::DoOneSectorLower(subsector_t * subsec, float Planez)
+bool HWDrawInfo::DoOneSectorLower(subsector_t * subsec, float Planez, area_t in_area)
 {
 	// Is there a one-sided wall in this subsector?
 	// Do this first to avoid unnecessary recursion
@@ -341,7 +341,7 @@ bool FDrawInfo::DoOneSectorLower(subsector_t * subsec, float Planez)
 			// Note: if this is a real line between sectors
 			// we can be sure that render_sector is the real sector!
 
-			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, mDrawer->in_area, true);
+			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, in_area, true);
 
 			// Don't bother with slopes
 			if (sec->floorplane.isSlope())  return false;
@@ -362,7 +362,7 @@ bool FDrawInfo::DoOneSectorLower(subsector_t * subsec, float Planez)
 				else return false;
 			}
 		}
-		if (!DoOneSectorLower(backsub, Planez)) return false;
+		if (!DoOneSectorLower(backsub, Planez, in_area)) return false;
 	}
 	// all checked ok. This sector is part of the current fake plane
 
@@ -376,7 +376,7 @@ bool FDrawInfo::DoOneSectorLower(subsector_t * subsec, float Planez)
 //
 //
 //==========================================================================
-bool FDrawInfo::DoFakeBridge(subsector_t * subsec, float Planez)
+bool HWDrawInfo::DoFakeBridge(subsector_t * subsec, float Planez, area_t in_area)
 {
 	// Is there a one-sided wall in this sector?
 	// Do this first to avoid unnecessary recursion
@@ -400,7 +400,7 @@ bool FDrawInfo::DoFakeBridge(subsector_t * subsec, float Planez)
 			// Note: if this is a real line between sectors
 			// we can be sure that render_sector is the real sector!
 
-			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, mDrawer->in_area, true);
+			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, in_area, true);
 
 			// Don't bother with slopes
 			if (sec->floorplane.isSlope())  return false;
@@ -416,7 +416,7 @@ bool FDrawInfo::DoFakeBridge(subsector_t * subsec, float Planez)
 			// No texture checks though! 
 			if (sec->GetPlaneTexZ(sector_t::floor) == Planez) continue;
 		}
-		if (!DoFakeBridge(backsub, Planez)) return false;
+		if (!DoFakeBridge(backsub, Planez, in_area)) return false;
 	}
 	// all checked ok. This sector is part of the current fake plane
 
@@ -429,7 +429,7 @@ bool FDrawInfo::DoFakeBridge(subsector_t * subsec, float Planez)
 //
 //
 //==========================================================================
-bool FDrawInfo::DoFakeCeilingBridge(subsector_t * subsec, float Planez)
+bool HWDrawInfo::DoFakeCeilingBridge(subsector_t * subsec, float Planez, area_t in_area)
 {
 	// Is there a one-sided wall in this sector?
 	// Do this first to avoid unnecessary recursion
@@ -453,7 +453,7 @@ bool FDrawInfo::DoFakeCeilingBridge(subsector_t * subsec, float Planez)
 			// Note: if this is a real line between sectors
 			// we can be sure that render_sector is the real sector!
 
-			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, mDrawer->in_area, true);
+			sector_t * sec = gl_FakeFlat(seg->backsector, &fakesec, in_area, true);
 
 			// Don't bother with slopes
 			if (sec->ceilingplane.isSlope())  return false;
@@ -469,7 +469,7 @@ bool FDrawInfo::DoFakeCeilingBridge(subsector_t * subsec, float Planez)
 			// No texture checks though! 
 			if (sec->GetPlaneTexZ(sector_t::ceiling) == Planez) continue;
 		}
-		if (!DoFakeCeilingBridge(backsub, Planez)) return false;
+		if (!DoFakeCeilingBridge(backsub, Planez, in_area)) return false;
 	}
 	// all checked ok. This sector is part of the current fake plane
 
@@ -483,7 +483,7 @@ bool FDrawInfo::DoFakeCeilingBridge(subsector_t * subsec, float Planez)
 // Draws the fake planes
 //
 //==========================================================================
-void FDrawInfo::HandleMissingTextures()
+void HWDrawInfo::HandleMissingTextures(area_t in_area)
 {
 	sector_t fake;
 	totalms.Clock();
@@ -501,7 +501,7 @@ void FDrawInfo::HandleMissingTextures()
 			// close the hole only if all neighboring sectors are an exact height match
 			// Otherwise just fill in the missing textures.
 			MissingUpperTextures[i].sub->validcount = validcount;
-			if (DoOneSectorUpper(MissingUpperTextures[i].sub, MissingUpperTextures[i].Planez))
+			if (DoOneSectorUpper(MissingUpperTextures[i].sub, MissingUpperTextures[i].Planez, in_area))
 			{
 				sector_t * sec = MissingUpperTextures[i].seg->backsector;
 				// The mere fact that this seg has been added to the list means that the back sector
@@ -542,11 +542,11 @@ void FDrawInfo::HandleMissingTextures()
 
 		{
 			// It isn't a hole. Now check whether it might be a fake bridge
-			sector_t * fakesector = gl_FakeFlat(MissingUpperTextures[i].seg->frontsector, &fake, mDrawer->in_area, false);
+			sector_t * fakesector = gl_FakeFlat(MissingUpperTextures[i].seg->frontsector, &fake, in_area, false);
 			float planez = (float)fakesector->GetPlaneTexZ(sector_t::ceiling);
 
 			backsub->validcount = validcount;
-			if (DoFakeCeilingBridge(backsub, planez))
+			if (DoFakeCeilingBridge(backsub, planez, in_area))
 			{
 				// The mere fact that this seg has been added to the list means that the back sector
 				// will be rendered so we can safely assume that it is already in the render list
@@ -573,7 +573,7 @@ void FDrawInfo::HandleMissingTextures()
 			// close the hole only if all neighboring sectors are an exact height match
 			// Otherwise just fill in the missing textures.
 			MissingLowerTextures[i].sub->validcount = validcount;
-			if (DoOneSectorLower(MissingLowerTextures[i].sub, MissingLowerTextures[i].Planez))
+			if (DoOneSectorLower(MissingLowerTextures[i].sub, MissingLowerTextures[i].Planez, in_area))
 			{
 				sector_t * sec = MissingLowerTextures[i].seg->backsector;
 				// The mere fact that this seg has been added to the list means that the back sector
@@ -613,11 +613,11 @@ void FDrawInfo::HandleMissingTextures()
 
 		{
 			// It isn't a hole. Now check whether it might be a fake bridge
-			sector_t * fakesector = gl_FakeFlat(MissingLowerTextures[i].seg->frontsector, &fake, mDrawer->in_area, false);
+			sector_t * fakesector = gl_FakeFlat(MissingLowerTextures[i].seg->frontsector, &fake, in_area, false);
 			float planez = (float)fakesector->GetPlaneTexZ(sector_t::floor);
 
 			backsub->validcount = validcount;
-			if (DoFakeBridge(backsub, planez))
+			if (DoFakeBridge(backsub, planez, in_area))
 			{
 				// The mere fact that this seg has been added to the list means that the back sector
 				// will be rendered so we can safely assume that it is already in the render list
@@ -645,7 +645,7 @@ void FDrawInfo::HandleMissingTextures()
 //
 //==========================================================================
 
-void FDrawInfo::DrawUnhandledMissingTextures()
+void HWDrawInfo::DrawUnhandledMissingTextures()
 {
 	validcount++;
 	for (int i = MissingUpperSegs.Size() - 1; i >= 0; i--)
@@ -714,7 +714,7 @@ ADD_STAT(missingtextures)
 //
 //==========================================================================
 
-void FDrawInfo::AddHackedSubsector(subsector_t * sub)
+void HWDrawInfo::AddHackedSubsector(subsector_t * sub)
 {
 	if (!(level.maptype == MAPTYPE_HEXEN))
 	{
@@ -729,7 +729,7 @@ void FDrawInfo::AddHackedSubsector(subsector_t * sub)
 //
 //==========================================================================
 
-bool FDrawInfo::CheckAnchorFloor(subsector_t * sub)
+bool HWDrawInfo::CheckAnchorFloor(subsector_t * sub)
 {
 	// This subsector has a one sided wall and can be used.
 	if (sub->hacked==3) return true;
@@ -768,7 +768,7 @@ bool FDrawInfo::CheckAnchorFloor(subsector_t * sub)
 //
 //==========================================================================
 
-bool FDrawInfo::CollectSubsectorsFloor(subsector_t * sub, sector_t * anchor)
+bool HWDrawInfo::CollectSubsectorsFloor(subsector_t * sub, sector_t * anchor)
 {
 
 	// mark it checked
@@ -832,7 +832,7 @@ bool FDrawInfo::CollectSubsectorsFloor(subsector_t * sub, sector_t * anchor)
 //
 //==========================================================================
 
-bool FDrawInfo::CheckAnchorCeiling(subsector_t * sub)
+bool HWDrawInfo::CheckAnchorCeiling(subsector_t * sub)
 {
 	// This subsector has a one sided wall and can be used.
 	if (sub->hacked==3) return true;
@@ -871,7 +871,7 @@ bool FDrawInfo::CheckAnchorCeiling(subsector_t * sub)
 //
 //==========================================================================
 
-bool FDrawInfo::CollectSubsectorsCeiling(subsector_t * sub, sector_t * anchor)
+bool HWDrawInfo::CollectSubsectorsCeiling(subsector_t * sub, sector_t * anchor)
 {
 	// mark it checked
 	sub->validcount=validcount;
@@ -931,7 +931,7 @@ bool FDrawInfo::CollectSubsectorsCeiling(subsector_t * sub, sector_t * anchor)
 //
 //==========================================================================
 
-void FDrawInfo::HandleHackedSubsectors()
+void HWDrawInfo::HandleHackedSubsectors()
 {
 	lowershcount=uppershcount=0;
 	totalssms.Reset();
@@ -959,13 +959,7 @@ void FDrawInfo::HandleHackedSubsectors()
 					node->sub = HandledSubsectors[j];
 					AddOtherFloorPlane(sub->render_sector->sectornum, node);
 				}
-				if (inview) for(unsigned int j=0;j<lowersegs.Size();j++)
+                if (inview) ProcessLowerMinisegs(lowersegs);
-				{
-					seg_t * seg=lowersegs[j];
-					GLWall wall(mDrawer);
-					wall.ProcessLowerMiniseg(seg, seg->Subsector->render_sector, seg->PartnerSeg->Subsector->render_sector);
-					rendered_lines++;
-				}
 				lowershcount+=HandledSubsectors.Size();
 			}
 		}
@@ -1014,12 +1008,12 @@ ADD_STAT(sectorhacks)
 //
 //==========================================================================
 
-void FDrawInfo::AddFloorStack(sector_t * sec)
+void HWDrawInfo::AddFloorStack(sector_t * sec)
 {
 	FloorStacks.Push(sec);
 }
 
-void FDrawInfo::AddCeilingStack(sector_t * sec)
+void HWDrawInfo::AddCeilingStack(sector_t * sec)
 {
 	CeilingStacks.Push(sec);
 }
@@ -1030,7 +1024,7 @@ void FDrawInfo::AddCeilingStack(sector_t * sec)
 //
 //==========================================================================
 
-void FDrawInfo::CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor)
+void HWDrawInfo::CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor, area_t in_area)
 {
 	// mark it checked
 	sub->validcount=validcount;
@@ -1042,7 +1036,7 @@ void FDrawInfo::CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor)
 	if (sub->numlines>2 && !(ss_renderflags[sub->Index()]&SSRF_PROCESSED)) return;
 
 	// Must be the exact same visplane
-	sector_t * me = gl_FakeFlat(sub->render_sector, &fakesec, mDrawer->in_area, false);
+	sector_t * me = gl_FakeFlat(sub->render_sector, &fakesec, in_area, false);
 	if (me->GetTexture(sector_t::ceiling) != anchor->GetTexture(sector_t::ceiling) ||
 		me->ceilingplane != anchor->ceilingplane ||
 		me->GetCeilingLight() != anchor->GetCeilingLight() ||
@@ -1063,7 +1057,7 @@ void FDrawInfo::CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor)
 		{
 			subsector_t * backsub = seg->PartnerSeg->Subsector;
 
-			if (backsub->validcount!=validcount) CollectSectorStacksCeiling (backsub, anchor);
+			if (backsub->validcount!=validcount) CollectSectorStacksCeiling (backsub, anchor, in_area);
 		}
 	}
 }
@@ -1074,7 +1068,7 @@ void FDrawInfo::CollectSectorStacksCeiling(subsector_t * sub, sector_t * anchor)
 //
 //==========================================================================
 
-void FDrawInfo::CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor)
+void HWDrawInfo::CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor, area_t in_area)
 {
 	// mark it checked
 	sub->validcount=validcount;
@@ -1086,7 +1080,7 @@ void FDrawInfo::CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor)
 	if (sub->numlines>2 && !(ss_renderflags[sub->Index()]&SSRF_PROCESSED)) return;
 
 	// Must be the exact same visplane
-	sector_t * me = gl_FakeFlat(sub->render_sector, &fakesec, mDrawer->in_area, false);
+	sector_t * me = gl_FakeFlat(sub->render_sector, &fakesec, in_area, false);
 	if (me->GetTexture(sector_t::floor) != anchor->GetTexture(sector_t::floor) ||
 		me->floorplane != anchor->floorplane ||
 		me->GetFloorLight() != anchor->GetFloorLight() ||
@@ -1107,7 +1101,7 @@ void FDrawInfo::CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor)
 		{
 			subsector_t * backsub = seg->PartnerSeg->Subsector;
 
-			if (backsub->validcount!=validcount) CollectSectorStacksFloor (backsub, anchor);
+			if (backsub->validcount!=validcount) CollectSectorStacksFloor (backsub, anchor, in_area);
 		}
 	}
 }
@@ -1118,14 +1112,14 @@ void FDrawInfo::CollectSectorStacksFloor(subsector_t * sub, sector_t * anchor)
 //
 //==========================================================================
 
-void FDrawInfo::ProcessSectorStacks()
+void HWDrawInfo::ProcessSectorStacks(area_t in_area)
 {
 	unsigned int i;
 
 	validcount++;
 	for (i=0;i<CeilingStacks.Size (); i++)
 	{
-		sector_t *sec = gl_FakeFlat(CeilingStacks[i], &fakesec, mDrawer->in_area, false);
+		sector_t *sec = gl_FakeFlat(CeilingStacks[i], &fakesec, in_area, false);
 		auto portal = sec->GetPortalGroup(sector_t::ceiling);
 		if (portal != NULL) for(int k=0;k<sec->subsectorcount;k++)
 		{
@@ -1140,7 +1134,7 @@ void FDrawInfo::ProcessSectorStacks()
 					{
 						subsector_t * backsub = seg->PartnerSeg->Subsector;
 
-						if (backsub->validcount!=validcount) CollectSectorStacksCeiling (backsub, sec);
+						if (backsub->validcount!=validcount) CollectSectorStacksCeiling (backsub, sec, in_area);
 					}
 				}
 				for(unsigned int j=0;j<HandledSubsectors.Size();j++)
@@ -1169,7 +1163,7 @@ void FDrawInfo::ProcessSectorStacks()
 	validcount++;
 	for (i=0;i<FloorStacks.Size (); i++)
 	{
-		sector_t *sec = gl_FakeFlat(FloorStacks[i], &fakesec, mDrawer->in_area, false);
+		sector_t *sec = gl_FakeFlat(FloorStacks[i], &fakesec, in_area, false);
 		auto portal = sec->GetPortalGroup(sector_t::floor);
 		if (portal != NULL) for(int k=0;k<sec->subsectorcount;k++)
 		{
@@ -1184,7 +1178,7 @@ void FDrawInfo::ProcessSectorStacks()
 					{
 						subsector_t	* backsub = seg->PartnerSeg->Subsector;
 
-						if (backsub->validcount!=validcount) CollectSectorStacksFloor (backsub, sec);
+						if (backsub->validcount!=validcount) CollectSectorStacksFloor (backsub, sec, in_area);
 					}
 				}
 

src/gl/scene/gl_scene.cpp

@@ -269,9 +269,9 @@ void GLSceneDrawer::CreateScene()
 	// These cannot be multithreaded when the time comes because all these depend
 	// on the global 'validcount' variable.
 
-	gl_drawinfo->HandleMissingTextures();	// Missing upper/lower textures
+	gl_drawinfo->HandleMissingTextures(in_area);	// Missing upper/lower textures
 	gl_drawinfo->HandleHackedSubsectors();	// open sector hacks for deep water
-	gl_drawinfo->ProcessSectorStacks();		// merge visplanes of sector stacks
+	gl_drawinfo->ProcessSectorStacks(in_area);		// merge visplanes of sector stacks
 	GLRenderer->mVBO->Unmap();
 
 	ProcessAll.Unclock();