- fixed: vertically mirrored textures should not be subjected to empt…

…y space optimizations because the algorithm cannot deal with the inverted case.
ZDoom · Jun 3, 2020 · fd3845c · fd3845c
1 parent 87d8165
commit fd3845c
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Showing 2 changed files with 6 additions and 4 deletions.
diff --git a/src/rendering/hwrenderer/scene/hw_drawstructs.h b/src/rendering/hwrenderer/scene/hw_drawstructs.h
@@ -128,7 +128,8 @@ class HWWall
 		HWF_NOSPLITUPPER=16,
 		HWF_NOSPLITLOWER=32,
 		HWF_NOSPLIT=64,
-		HWF_TRANSLUCENT = 128
+		HWF_TRANSLUCENT = 128,
+		HWF_NOSLICE = 256
 	};
 
 	enum
@@ -164,9 +165,9 @@ class HWWall
 
 	float ViewDistance;
 
-	int lightlevel;
+	short lightlevel;
+	uint16_t flags;
 	uint8_t type;
-	uint8_t flags;
 	short rellight;
 
 	float topglowcolor[4];

diff --git a/src/rendering/hwrenderer/scene/hw_walls.cpp b/src/rendering/hwrenderer/scene/hw_walls.cpp
@@ -1404,6 +1404,7 @@ void HWWall::DoMidTexture(HWDrawInfo *di, seg_t * seg, bool drawfogboundary,
 	{
 		tci.mRenderHeight = -tci.mRenderHeight;
 		tci.mScale.Y = -tci.mScale.Y;
+		flags |= HWF_NOSLICE;
 	}
 	SetWallCoordinates(seg, &tci, texturetop, topleft, topright, bottomleft, bottomright, t_ofs);
 
@@ -1464,7 +1465,7 @@ void HWWall::DoMidTexture(HWDrawInfo *di, seg_t * seg, bool drawfogboundary,
 		FloatRect *splitrect;
 		int v = texture->GetAreas(&splitrect);
 		if (seg->frontsector == seg->backsector) flags |= HWF_NOSPLIT;	// we don't need to do vertex splits if a line has both sides in the same sector
-		if (v>0 && !drawfogboundary && !(seg->linedef->flags&ML_WRAP_MIDTEX))
+		if (v>0 && !drawfogboundary && !(seg->linedef->flags&ML_WRAP_MIDTEX) && !(flags & HWF_NOSLICE))
 		{
 			// split the poly!
 			int i,t=0;