From 0f0cf7261ef0df07f29d7ee9914f6ae390c50b28 Mon Sep 17 00:00:00 2001
From: Magnus Norddahl <dpjudas@users.noreply.github.com>
Date: Sat, 2 Sep 2017 15:02:06 +0200
Subject: [PATCH] - Remove unused code

---
 src/polyrenderer/scene/poly_scene.cpp | 43 ++-------------------------
 src/polyrenderer/scene/poly_scene.h   |  3 +-
 2 files changed, 3 insertions(+), 43 deletions(-)

diff --git a/src/polyrenderer/scene/poly_scene.cpp b/src/polyrenderer/scene/poly_scene.cpp
index 8e0cf78cd..7cdc4888b 100644
--- a/src/polyrenderer/scene/poly_scene.cpp
+++ b/src/polyrenderer/scene/poly_scene.cpp
@@ -86,7 +86,6 @@ void RenderPolyScene::ClearBuffers()
 	TranslucentObjects.clear();
 	SectorPortals.clear();
 	LinePortals.clear();
-	NextSubsectorDepth = 0;
 }
 
 void RenderPolyScene::RenderSectors()
@@ -94,55 +93,17 @@ void RenderPolyScene::RenderSectors()
 	int count = (int)Cull.PvsSectors.size();
 	auto subsectors = Cull.PvsSectors.data();
 
-	int nextCeilingZChange = 0;
-	int nextFloorZChange = 0;
-	uint32_t ceilingSubsectorDepth = 0;
-	uint32_t floorSubsectorDepth = 0;
-
 	for (int i = 0; i < count; i++)
 	{
-		// The software renderer only updates the clipping if the sector height changes.
-		// Find the subsector depths for when that happens.
-		if (i == nextCeilingZChange)
-		{
-			double z = subsectors[i]->sector->ceilingplane.Zat0();
-			nextCeilingZChange++;
-			while (nextCeilingZChange < count)
-			{
-				double nextZ = subsectors[nextCeilingZChange]->sector->ceilingplane.Zat0();
-				if (nextZ > z)
-					break;
-				z = nextZ;
-				nextCeilingZChange++;
-			}
-			ceilingSubsectorDepth = NextSubsectorDepth + nextCeilingZChange - i - 1;
-		}
-		if (i == nextFloorZChange)
-		{
-			double z = subsectors[i]->sector->floorplane.Zat0();
-			nextFloorZChange++;
-			while (nextFloorZChange < count)
-			{
-				double nextZ = subsectors[nextFloorZChange]->sector->floorplane.Zat0();
-				if (nextZ < z)
-					break;
-				z = nextZ;
-				nextFloorZChange++;
-			}
-			floorSubsectorDepth = NextSubsectorDepth + nextFloorZChange - i - 1;
-		}
-
-		RenderSubsector(subsectors[i], ceilingSubsectorDepth, floorSubsectorDepth);
+		RenderSubsector(subsectors[i], i);
 	}
 }
 
-void RenderPolyScene::RenderSubsector(subsector_t *sub, uint32_t ceilingSubsectorDepth, uint32_t floorSubsectorDepth)
+void RenderPolyScene::RenderSubsector(subsector_t *sub, uint32_t subsectorDepth)
 {
 	sector_t *frontsector = sub->sector;
 	frontsector->MoreFlags |= SECF_DRAWN;
 
-	uint32_t subsectorDepth = NextSubsectorDepth++;
-
 	bool mainBSP = sub->polys == nullptr;
 
 	if (sub->polys)
diff --git a/src/polyrenderer/scene/poly_scene.h b/src/polyrenderer/scene/poly_scene.h
index 2e0c4821b..5e768fbdb 100644
--- a/src/polyrenderer/scene/poly_scene.h
+++ b/src/polyrenderer/scene/poly_scene.h
@@ -97,7 +97,7 @@ private:
 	void ClearBuffers();
 	void RenderPortals(int portalDepth);
 	void RenderSectors();
-	void RenderSubsector(subsector_t *sub, uint32_t ceilingSubsectorDepth, uint32_t floorSubsectorDepth);
+	void RenderSubsector(subsector_t *sub, uint32_t subsectorDepth);
 	void RenderLine(subsector_t *sub, seg_t *line, sector_t *frontsector, uint32_t subsectorDepth);
 	void RenderSprite(AActor *thing, double sortDistance, const DVector2 &left, const DVector2 &right);
 	void RenderSprite(AActor *thing, double sortDistance, DVector2 left, DVector2 right, double t1, double t2, void *node);
@@ -110,7 +110,6 @@ private:
 	PolyClipPlane PortalPlane;
 	uint32_t StencilValue = 0;
 	PolyCull Cull;
-	uint32_t NextSubsectorDepth = 0;
 	std::set<sector_t *> SeenSectors;
 	std::unordered_map<subsector_t *, uint32_t> SubsectorDepths;
 	std::vector<PolyTranslucentObject *> TranslucentObjects;