- Updated Jim's Makefile.linux.

- Added support for wrapping midtextures vertically. - Since zdoom.wad is now zdoom.pk3, the default mapinfos can use full pathnames. So now they do. - Fixed: The DSimpleCanvas constructor used a pitch too narrow on screens wider than 640 pixels when using a non-AMD processor and the processor's L1 cache line size could not be determined. I think this should fix the issue of weirdly rendered 8 pixel wide borders on the left and right of the screen that some people experienced. - Fixed: The secnodes were never freed. SVN r93 (trunk)
2024-11-25 21:41:03 +00:00 · 2006-05-09 21:30:31 +00:00 · 2006-05-09 21:30:31 +00:00 · 981f663319
commit 981f663319
parent 7ed597fcbe
18 changed files with 1020 additions and 119 deletions
--- a/Makefile.linux
+++ b/Makefile.linux
@ -1,6 +1,7 @@
 # created on 4/12/2006 by James Bentler
 CXX ?= g++
 CC ?= gcc
+NASM ?= nasm
 ifndef DEBUG
 CFLAGS ?= -pipe -Wall -Wno-unused -O2 -fomit-frame-pointer
 else
@ -9,8 +10,6 @@ endif
 CFLAGS += -DHAVE_FILELENGTH -D__forceinline=inline -Izlib -IFLAC `sdl-config --cflags`
 CFLAGS += -Dstricmp=strcasecmp -Dstrnicmp=strncasecmp -DNEED_STRUPR
 LDFLAGS += -lFLAC++ -lFLAC -lz -lfmod `sdl-config --libs`
-
-NASM ?= nasm
 NASMFLAGS += -f elf -DM_TARGET_LINUX

 SRCDIRS = src/ $(addprefix src/,g_doom/ g_heretic/ g_hexen/ g_raven/ g_shared/ g_strife/ oplsynth/ sound/ sdl/)
@ -44,6 +43,7 @@ ifndef DEBUG
 else
  OBJDIR = $(DEBUGOBJ)
  CFLAGS += -D_DEBUG -g3
+  NASMFLAGS += -g
  ZDOOMBIN = $(ZDOOMDEBUG)
 endif
 CXXFLAGS += $(CFLAGS)
@ -72,7 +72,7 @@ _obj_: _src_
 	$(CC) -c $(CFLAGS) -o _obj_ -c _src_
 endef

-all: $(ZDOOMBIN) zdoom.wad
+all: $(ZDOOMBIN) toolsandpk3 zdoom.pk3

 $(ZDOOMBIN): $(OBJDIR) $(if $(RESTART),deps) $(OBJS)
 ifndef RESTART
@ -110,10 +110,22 @@ endif
 $(OBJDIR):
 	mkdir $(OBJDIR)

-zdoom.wad:
-	make -C wadsrc/ -f Makefile
+toolsandpk3: tools/makewad/makewad tools/dehsupp/dehsupp tools/xlatcc/xlatcc
+	make -C wadsrc/

-.PHONY : clean cleandeps cleanobjs distclean deps
+zdoom.pk3: toolsandpk3
+	ln -sf wadsrc/zdoom.pk3 ./
+
+tools/makewad/makewad:
+	make -C tools/makewad/
+
+tools/dehsupp/dehsupp:
+	make -C tools/dehsupp/
+
+tools/xlatcc/xlatcc:
+	make -C tools/xlatcc/
+
+.PHONY : clean cleandeps cleanobjs distclean deps toolsandpk3

 clean: cleanobjs
 	rm -f $(ZDOOMDEBUG) $(ZDOOM) $(ZDOOM).map
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@ -1,3 +1,15 @@
+May 9, 2006
+- Updated Jim's Makefile.linux.
+- Added support for wrapping midtextures vertically.
+- Since zdoom.wad is now zdoom.pk3, the default mapinfos can use full pathnames.
+  So now they do.
+- Fixed: The DSimpleCanvas constructor used a pitch too narrow on screens wider
+  than 640 pixels when using a non-AMD processor and the processor's L1 cache
+  line size could not be determined. I think this should fix the issue of
+  weirdly rendered 8 pixel wide borders on the left and right of the screen that
+  some people experienced.
+- Fixed: The secnodes were never freed.
+
 May 9, 2006 (Changes by Graf Zahl)
 - Fixed: The FSpecialFont constructor created the name string twice.
 - Fixed: The animated door parser was still leaking memory when it encountered
--- a/src/a.nas
+++ b/src/a.nas
@ -22,6 +22,10 @@
 %define prevlineasm1	_prevlineasm1
 %define vlineasm1		_vlineasm1
 %define vlineasm4		_vlineasm4
+
+%define setupmvlineasm		_setupmvlineasm
+%define mvlineasm1		_mvlineasm1
+%define mvlineasm4		_mvlineasm4
 %endif

 EXTERN ylookup ; near
@ -38,14 +42,20 @@ EXTERN dc_dest
 EXTERN dc_source
 EXTERN dc_texturefrac

+mvlineasm4_counter:
+	dd 0
+
 	SECTION .text

 ALIGN 16
 GLOBAL setvlinebpl_
 setvlinebpl_:
-	mov dword [fixchain1a+2], eax
-	mov dword [fixchain1b+2], eax
-	mov dword [fixchain2a+2], eax
+	mov [fixchain1a+2], eax
+	mov [fixchain1b+2], eax
+	mov [fixchain2a+2], eax
+	mov [fixchain1m+2], eax
+	mov [fixchain2ma+2], eax
+	mov [fixchain2mb+2], eax
 	ret

 ; pass it log2(texheight)
@ -242,9 +252,6 @@ machvsh12:	rol ebx, 88h                ;sh
 		mov ecx, esi
 		jmp short beginvlineasm4
 ALIGN 16
-		nop
-		nop
-		nop
 beginvlineasm4:
 machvsh1:	shr ecx, 88h          ;32-sh
 		mov ebx, esi
@ -300,3 +307,226 @@ machvsh8:	shl edx, 88h     ;16-sh
 		pop ebx
 		pop ebp
 		ret
+
+;*************************************************************************
+;************************* Masked Vertical Lines *************************
+;*************************************************************************
+
+; pass it log2(texheight)
+
+ALIGN 16
+GLOBAL setupmvlineasm
+setupmvlineasm:
+		mov ecx, dword [esp+4]
+		mov byte [maskmach3a+2], cl
+		mov byte [machmv13+2], cl
+		mov byte [machmv14+2], cl
+		mov byte [machmv15+2], cl
+		mov byte [machmv16+2], cl
+		ret
+
+ALIGN 16
+GLOBAL mvlineasm1	;Masked vline
+mvlineasm1:
+		push ebx
+		push edi
+		push esi
+		push ebp
+		mov ecx, [dc_count]
+		mov ebp, [dc_colormap]
+		mov edi, [dc_dest]
+		mov eax, [dc_iscale]
+		mov edx, [dc_texturefrac]
+		mov esi, [dc_source]
+beginmvline:
+		mov ebx, edx
+maskmach3a:	shr ebx, 32
+		mov bl, byte [esi+ebx]
+		cmp bl, 0
+		je short skipmask1
+maskmach3c:	mov bl, byte [ebp+ebx]
+		mov [edi], bl
+skipmask1:	add edx, eax
+fixchain1m:	add edi, 320
+		dec ecx
+		jnz short beginmvline
+
+		pop ebp
+		pop esi
+		pop edi
+		pop ebx
+		mov eax, edx
+		ret
+
+ALIGN 16
+GLOBAL mvlineasm4
+mvlineasm4:
+		push ebx
+		push esi
+		push edi
+		push ebp
+
+		mov ecx,[dc_count]
+		mov edi,[dc_dest]
+
+		mov eax, [bufplce+0]
+		mov ebx, [bufplce+4]
+		mov [machmv1+2], eax
+		mov [machmv4+2], ebx
+		mov eax, [bufplce+8]
+		mov ebx, [bufplce+12]
+		mov [machmv7+2], eax
+		mov [machmv10+2], ebx
+
+		mov eax, [palookupoffse]
+		mov ebx, [palookupoffse+4]
+		mov [machmv2+2], eax
+		mov [machmv5+2], ebx
+		mov eax, [palookupoffse+8]
+		mov ebx, [palookupoffse+12]
+		mov [machmv8+2], eax
+		mov [machmv11+2], ebx
+
+		mov eax, [vince]	;vince
+		mov ebx, [vince+4]
+		xor al, al
+		xor bl, bl
+		mov [machmv3+2], eax
+		mov [machmv6+2], ebx
+		mov eax, [vince+8]
+		mov ebx, [vince+12]
+		mov [machmv9+2], eax
+		mov [machmv12+2], ebx
+
+		inc ecx
+		push ecx
+		mov ecx, [vplce+0]
+		mov edx, [vplce+4]
+		mov esi, [vplce+8]
+		mov ebp, [vplce+12]
+fixchain2ma:	sub edi, 320
+
+		jmp short beginmvlineasm4
+ALIGN 16
+beginmvlineasm4:
+		dec dword [esp]
+		jz near endmvlineasm4
+
+		mov eax, ebp
+		mov ebx, esi
+machmv16:	shr eax, 32
+machmv15:	shr ebx, 32
+machmv12:	add ebp, 0x88888888		;vince[3]
+machmv9:	add esi, 0x88888888		;vince[2]
+machmv10:	mov al, [eax+0x88888888]	;bufplce[3]
+machmv7:	mov bl, [ebx+0x88888888]	;bufplce[2]
+		cmp al, 1
+		adc dl, dl
+		cmp bl, 1
+		adc dl, dl
+machmv8:	mov bl, [ebx+0x88888888]	;palookupoffs[2]
+machmv11:	mov bh, [eax+0x88888888]	;palookupoffs[3]
+
+		mov eax, edx
+machmv14:	shr eax, 32
+		shl ebx, 16
+machmv4:	mov al, [eax+0x88888888]	;bufplce[1]
+		cmp al, 1
+		adc dl, dl
+machmv6:	add edx, 0x88888888		;vince[1]
+machmv5:	mov bh, [eax+0x88888888]	;palookupoffs[1]
+
+		mov eax, ecx
+machmv13:	shr eax, 32
+machmv3:	add ecx, 0x88888888		;vince[0]
+machmv1:	mov al, [eax+0x88888888]	;bufplce[0]
+		cmp al, 1
+		adc dl, dl
+machmv2:	mov bl, [eax+0x88888888]	;palookupoffs[0]
+
+		shl dl, 4
+		xor eax, eax
+fixchain2mb:	add edi, 320
+		mov al, dl
+		add eax, mvcase15
+		jmp eax		;16 byte cases
+
+ALIGN 16
+endmvlineasm4:
+		mov [_vplce], ecx
+		mov [_vplce+4], edx
+		mov [_vplce+8], esi
+		mov [_vplce+12], ebp
+		pop ecx
+		pop ebp
+		pop edi
+		pop esi
+		pop ebx
+		ret
+
+	;5,7,8,8,11,13,12,14,11,13,14,14,12,14,15,7
+ALIGN 16
+mvcase15:	mov [edi], ebx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase14:	mov [edi+1], bh
+		shr ebx, 16
+		mov [edi+2], bx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase13:	mov [edi], bl
+		shr ebx, 16
+		mov [edi+2], bx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase12:	shr ebx, 16
+		mov [edi+2], bx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase11:	mov [edi], bx
+		shr ebx, 16
+		mov [edi+3], bh
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase10:	mov [edi+1], bh
+		shr ebx, 16
+		mov [edi+3], bh
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase9:	mov [edi], bl
+		shr ebx, 16
+		mov [edi+3], bh
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase8:	shr ebx, 16
+		mov [edi+3], bh
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase7:	mov [edi], bx
+		shr ebx, 16
+		mov [edi+2], bl
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase6:	shr ebx, 8
+		mov [edi+1], bx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase5:	mov [edi], bl
+		shr ebx, 16
+		mov [edi+2], bl
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase4:	shr ebx, 16
+		mov [edi+2], bl
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase3:	mov [edi], bx
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase2:	mov [edi+1], bh
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase1:	mov [edi], bl
+		jmp beginmvlineasm4
+ALIGN 16
+mvcase0:	jmp beginmvlineasm4
--- a/src/doomdata.h
+++ b/src/doomdata.h
@ -170,6 +170,7 @@ static inline int GET_SPAC (int flags)
 #define ML_RAILING					0x20000
 #define ML_BLOCK_FLOATERS			0x40000
 #define ML_CLIP_MIDTEX				0x80000	// Automatic for every Strife line
+#define ML_WRAP_MIDTEX				0x100000

 // Sector definition, from editing
 typedef struct
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@ -267,6 +267,7 @@ static const char *MapInfoMapLevel[] =
 	"sndinfo",
 	"soundinfo",
 	"clipmidtextures",
+	"wrapmidtextures",
 	NULL
 };

@ -379,6 +380,7 @@ MapHandlers[] =
 	{ MITYPE_LUMPNAME,	lioffset(soundinfo), 0 },
 	{ MITYPE_LUMPNAME,	lioffset(soundinfo), 0 },
 	{ MITYPE_SETFLAG,	LEVEL_CLIPMIDTEX, 0 },
+	{ MITYPE_SETFLAG,	LEVEL_WRAPMIDTEX, 0 },
 };

 static const char *MapInfoClusterLevel[] =
@ -474,30 +476,30 @@ void G_ParseMapInfo ()
 		switch (gamemission)
 		{
 		case doom:
-			G_DoParseMapInfo (Wads.GetNumForName ("D1INFO"));
+			G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/doom1.txt"));
 			break;
 		case pack_plut:
-			G_DoParseMapInfo (Wads.GetNumForName ("PLUTINFO"));
+			G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/plutonia.txt"));
 			break;
 		case pack_tnt:
-			G_DoParseMapInfo (Wads.GetNumForName ("TNTINFO"));
+			G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/tnt.txt"));
 			break;
 		default:
-			G_DoParseMapInfo (Wads.GetNumForName ("D2INFO"));
+			G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/doom2.txt"));
 			break;
 		}
 		break;

 	case GAME_Heretic:
-		G_DoParseMapInfo (Wads.GetNumForName ("HERINFO"));
+		G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/heretic.txt"));
 		break;

 	case GAME_Hexen:
-		G_DoParseMapInfo (Wads.GetNumForName ("HEXNINFO"));
+		G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/hexen.txt"));
 		break;

 	case GAME_Strife:
-		G_DoParseMapInfo (Wads.GetNumForName ("STRFINFO"));
+		G_DoParseMapInfo (Wads.GetNumForFullName ("mapinfo/strife.txt"));
 		break;

 	default:
--- a/src/g_level.h
+++ b/src/g_level.h
@ -101,6 +101,7 @@
 #define LEVEL_MUSICDEFINED			UCONST64(0x8000000000)		// a marker to disable the $map command in SNDINFO for this map
 #define LEVEL_MONSTERFALLINGDAMAGE	UCONST64(0x10000000000)
 #define LEVEL_CLIPMIDTEX			UCONST64(0x20000000000)
+#define LEVEL_WRAPMIDTEX			UCONST64(0x40000000000)

 struct acsdefered_s;
 class FBehavior;
--- a/src/p_buildmap.cpp
+++ b/src/p_buildmap.cpp
@ -509,6 +509,7 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 		lines[j].v1 = FindVertex (walls[i].x, walls[i].y);
 		lines[j].v2 = FindVertex (walls[walls[i].point2].x, walls[walls[i].point2].y);
 		lines[j].frontsector = sides[i].sector;
+		lines[j].flags |= ML_WRAP_MIDTEX;
 		if (walls[i].nextsector >= 0)
 		{
 			lines[j].backsector = sectors + walls[i].nextsector;
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@ -4240,6 +4240,22 @@ bool P_ChangeSector (sector_t *sector, int crunch, int amt, int floorOrCeil)

 msecnode_t *headsecnode = NULL;

+struct SecnodeKiller
+{
+	~SecnodeKiller()
+	{
+		msecnode_t *node = headsecnode;
+
+		while (node != NULL)
+		{
+			msecnode_t *next = node->m_snext;
+			free (node);
+			node = next;
+		}
+		headsecnode = NULL;
+	}
+} KillTheSecnodes;
+
 //=============================================================================
 //
 // P_GetSecnode
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@ -1477,7 +1477,8 @@ void P_LoadLineDefs (int lump)

 		P_AdjustLine (ld);
 		P_SaveLineSpecial (ld);
-		if (level.flags&LEVEL_CLIPMIDTEX) ld->flags|=ML_CLIP_MIDTEX;
+		if (level.flags & LEVEL_CLIPMIDTEX) ld->flags |= ML_CLIP_MIDTEX;
+		if (level.flags & LEVEL_WRAPMIDTEX) ld->flags |= ML_WRAP_MIDTEX;
 	}
 }

@ -1548,7 +1549,8 @@ void P_LoadLineDefs2 (int lump)

 		P_AdjustLine (ld);
 		P_SaveLineSpecial (ld);
-		if (level.flags&LEVEL_CLIPMIDTEX) ld->flags|=ML_CLIP_MIDTEX;
+		if (level.flags & LEVEL_CLIPMIDTEX) ld->flags |= ML_CLIP_MIDTEX;
+		if (level.flags & LEVEL_WRAPMIDTEX) ld->flags |= ML_WRAP_MIDTEX;
 	}
 }

--- a/src/p_xlat.cpp
+++ b/src/p_xlat.cpp
@ -88,7 +88,6 @@ void P_TranslateLineDef (line_t *ld, maplinedef_t *mld)
 		{
 			flags |= ML_BLOCK_FLOATERS;
 		}
-		//flags |= ML_CLIP_MIDTEX; moved to MAPINFO
 		passthrough = 0;
 	}
 	else
--- a/src/r_draw.cpp
+++ b/src/r_draw.cpp
@ -988,6 +988,13 @@ DWORD (STACK_ARGS *dovline1)() = vlinec1;
 DWORD (STACK_ARGS *doprevline1)() = vlinec1;
 void (STACK_ARGS *dovline4)() = vlinec4;

+static DWORD STACK_ARGS mvlinec1();
+static void STACK_ARGS mvlinec4();
+static int mvlinebits;
+
+DWORD (STACK_ARGS *domvline1)() = mvlinec1;
+void (STACK_ARGS *domvline4)() = mvlinec4;
+
 #else

 extern "C"
@ -1001,11 +1008,18 @@ void STACK_ARGS vlinetallasm4 ();
 void STACK_ARGS vlinetallasmathlon4 ();
 void STACK_ARGS setupvlineasm (int);
 void STACK_ARGS setupvlinetallasm (int);
+
+DWORD STACK_ARGS mvlineasm1();
+void STACK_ARGS mvlineasm4();
+void STACK_ARGS setupmvlineasm (int);
 }

 DWORD (STACK_ARGS *dovline1)() = vlinetallasm1;
 DWORD (STACK_ARGS *doprevline1)() = prevlinetallasm1;
 void (STACK_ARGS *dovline4)() = vlinetallasm4;
+
+DWORD (STACK_ARGS *domvline1)() = mvlineasm1;
+void (STACK_ARGS *domvline4)() = mvlineasm4;
 #endif

 void setupvline (int fracbits)
@ -1081,6 +1095,63 @@ void STACK_ARGS vlinec4 ()
 }
 #endif

+void setupmvline (int fracbits)
+{
+#if defined(USEASM)
+	setupmvlineasm (fracbits);
+	domvline1 = mvlineasm1;
+	domvline4 = mvlineasm4;
+#else
+	mvlinebits = fracbits;
+#endif
+}
+
+#ifndef USEASM
+DWORD STACK_ARGS mvlinec1 ()
+{
+	DWORD fracstep = dc_iscale;
+	DWORD frac = dc_texturefrac;
+	BYTE *colormap = dc_colormap;
+	int count = dc_count;
+	const BYTE *source = dc_source;
+	BYTE *dest = dc_dest;
+	int bits = mvlinebits;
+	int pitch = dc_pitch;
+
+	do
+	{
+		BYTE pix = source[frac>>bits];
+		if (pix != 0)
+		{
+			*dest = colormap[pix];
+		}
+		frac += fracstep;
+		dest += pitch;
+	} while (--count);
+
+	return frac;
+}
+
+void STACK_ARGS mvlinec4 ()
+{
+	BYTE *dest = dc_dest;
+	int count = dc_count;
+	int bits = mvlinebits;
+	DWORD place;
+
+	do
+	{
+		BYTE pix;
+
+		pix = bufplce[0][(place=vplce[0])>>bits]; if(pix) dest[0] = palookupoffse[0][pix]; vplce[0] = place+vince[0];
+		pix = bufplce[1][(place=vplce[1])>>bits]; if(pix) dest[1] = palookupoffse[1][pix]; vplce[1] = place+vince[1];
+		pix = bufplce[2][(place=vplce[2])>>bits]; if(pix) dest[2] = palookupoffse[2][pix]; vplce[2] = place+vince[2];
+		pix = bufplce[3][(place=vplce[3])>>bits]; if(pix) dest[3] = palookupoffse[3][pix]; vplce[3] = place+vince[3];
+		dest += dc_pitch;
+	} while (--count);
+}
+#endif
+
 extern "C" short spanend[MAXHEIGHT];
 extern fixed_t rw_light;
 extern fixed_t rw_lightstep;
@ -1202,6 +1273,139 @@ void R_DrawFogBoundary (int x1, int x2, short *uclip, short *dclip)
 	}
 }

+int tmvlinebits;
+
+void setuptmvline (int bits)
+{
+	tmvlinebits = bits;
+}
+
+fixed_t tmvline1_add ()
+{
+	DWORD fracstep = dc_iscale;
+	DWORD frac = dc_texturefrac;
+	BYTE *colormap = dc_colormap;
+	int count = dc_count;
+	const BYTE *source = dc_source;
+	BYTE *dest = dc_dest;
+	int bits = tmvlinebits;
+	int pitch = dc_pitch;
+
+	DWORD *fg2rgb = dc_srcblend;
+	DWORD *bg2rgb = dc_destblend;
+
+	do
+	{
+		BYTE pix = source[frac>>bits];
+		if (pix != 0)
+		{
+			DWORD fg = fg2rgb[colormap[pix]];
+			DWORD bg = bg2rgb[*dest];
+			fg = (fg+bg) | 0x1f07c1f;
+			*dest = RGB32k[0][0][fg & (fg>>15)];
+		}
+		frac += fracstep;
+		dest += pitch;
+	} while (--count);
+
+	return frac;
+}
+
+void tmvline4_add ()
+{
+	BYTE *dest = dc_dest;
+	int count = dc_count;
+	int bits = tmvlinebits;
+
+	DWORD *fg2rgb = dc_srcblend;
+	DWORD *bg2rgb = dc_destblend;
+
+	do
+	{
+		for (int i = 0; i < 4; ++i)
+		{
+			BYTE pix = bufplce[i][vplce[i] >> bits];
+			if (pix != 0)
+			{
+				DWORD fg = fg2rgb[palookupoffse[i][pix]];
+				DWORD bg = bg2rgb[dest[i]];
+				fg = (fg+bg) | 0x1f07c1f;
+				dest[i] = RGB32k[0][0][fg & (fg>>15)];
+			}
+			vplce[i] += vince[i];
+		}
+		dest += dc_pitch;
+	} while (--count);
+}
+
+fixed_t tmvline1_addclamp ()
+{
+	DWORD fracstep = dc_iscale;
+	DWORD frac = dc_texturefrac;
+	BYTE *colormap = dc_colormap;
+	int count = dc_count;
+	const BYTE *source = dc_source;
+	BYTE *dest = dc_dest;
+	int bits = tmvlinebits;
+	int pitch = dc_pitch;
+
+	DWORD *fg2rgb = dc_srcblend;
+	DWORD *bg2rgb = dc_destblend;
+
+	do
+	{
+		BYTE pix = source[frac>>bits];
+		if (pix != 0)
+		{
+			DWORD a = fg2rgb[colormap[pix]] + bg2rgb[*dest];
+			DWORD b = a;
+
+			a |= 0x01f07c1f;
+			b &= 0x40100400;
+			a &= 0x3fffffff;
+			b = b - (b >> 5);
+			a |= b;
+			*dest = RGB32k[0][0][a & (a>>15)];
+		}
+		frac += fracstep;
+		dest += pitch;
+	} while (--count);
+
+	return frac;
+}
+
+void tmvline4_addclamp ()
+{
+	BYTE *dest = dc_dest;
+	int count = dc_count;
+	int bits = tmvlinebits;
+
+	DWORD *fg2rgb = dc_srcblend;
+	DWORD *bg2rgb = dc_destblend;
+
+	do
+	{
+		for (int i = 0; i < 4; ++i)
+		{
+			BYTE pix = bufplce[i][vplce[i] >> bits];
+			if (pix != 0)
+			{
+				DWORD a = fg2rgb[palookupoffse[i][pix]] + bg2rgb[dest[i]];
+				DWORD b = a;
+
+				a |= 0x01f07c1f;
+				b &= 0x40100400;
+				a &= 0x3fffffff;
+				b = b - (b >> 5);
+				a |= b;
+				dest[i] = RGB32k[0][0][a & (a>>15)];
+			}
+			vplce[i] += vince[i];
+		}
+		dest += dc_pitch;
+	} while (--count);
+}
+
 /****************************************************/
 /****************************************************/

@ -1968,3 +2172,20 @@ void R_FinishSetPatchStyle ()
 {
 	basecolormap = basecolormapsave;
 }
+
+bool R_GetTransMaskDrawers (fixed_t (**tmvline1)(), void (**tmvline4)())
+{
+	if (colfunc == R_DrawAddColumnP_C)
+	{
+		*tmvline1 = tmvline1_add;
+		*tmvline4 = tmvline4_add;
+		return true;
+	}
+	if (colfunc == R_DrawAddClampColumnP_C)
+	{
+		*tmvline1 = tmvline1_addclamp;
+		*tmvline4 = tmvline4_addclamp;
+		return true;
+	}
+	return false;
+}
--- a/src/r_draw.h
+++ b/src/r_draw.h
@ -70,6 +70,12 @@ extern DWORD (STACK_ARGS *doprevline1) ();
 extern void (STACK_ARGS *dovline4) ();
 extern void setupvline (int);

+extern DWORD (STACK_ARGS *domvline1) ();
+extern void (STACK_ARGS *domvline4) ();
+extern void setupmvline (int);
+
+extern void setuptmvline (int);
+
 // The Spectre/Invisibility effect.
 extern void (*R_DrawFuzzColumn)(void);

@ -261,10 +267,19 @@ ESPSResult R_SetPatchStyle (int style, fixed_t alpha, int translation, DWORD col
 // style was STYLE_Shade
 void R_FinishSetPatchStyle ();

+// transmaskwallscan calls this to find out what column drawers to use
+bool R_GetTransMaskDrawers (fixed_t (**tmvline1)(), void (**tmvline4)());
+
 // Retrieve column data for wallscan. Should probably be removed
 // to just use the texture's GetColumn() method. It just exists
 // for double-layer skies.
 const BYTE *R_GetColumn (FTexture *tex, int col);
 void wallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal, const byte *(*getcol)(FTexture *tex, int col)=R_GetColumn);

+// maskwallscan is exactly like wallscan but does not draw anything where the texture is color 0.
+void maskwallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal, const byte *(*getcol)(FTexture *tex, int col)=R_GetColumn);
+
+// transmaskwallscan is like maskwallscan, but it can also blend to the background
+void transmaskwallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal, const byte *(*getcol)(FTexture *tex, int col)=R_GetColumn);
+
 #endif
--- a/src/r_segs.cpp
+++ b/src/r_segs.cpp
@ -121,7 +121,7 @@ static fixed_t	rw_bottomtexturemid;

 FTexture		*rw_pic;

-static short	*maskedtexturecol;
+static fixed_t	*maskedtexturecol;
 static FTexture	*WallSpriteTile;

 static void R_RenderDecal (side_t *wall, DBaseDecal *first, drawseg_t *clipper, int pass);
@ -157,10 +157,11 @@ CVAR(Bool, r_drawmirrors, true, 0)
 // R_RenderMaskedSegRange
 //
 fixed_t *MaskedSWall;
+fixed_t MaskedScaleY;

 static void BlastMaskedColumn (void (*blastfunc)(const BYTE *pixels, const FTexture::Span *spans), FTexture *tex)
 {
-	if (maskedtexturecol[dc_x] != SHRT_MAX)
+	if (maskedtexturecol[dc_x] != FIXED_MAX)
 	{
 		// calculate lighting
 		if (!fixedcolormap)
@ -168,7 +169,7 @@ static void BlastMaskedColumn (void (*blastfunc)(const BYTE *pixels, const FText
 			dc_colormap = basecolormap + (GETPALOOKUP (rw_light, wallshade) << COLORMAPSHIFT);
 		}

-		dc_iscale = MaskedSWall[dc_x];
+		dc_iscale = MulScale5 (MaskedSWall[dc_x], MaskedScaleY);
 		sprtopscreen = centeryfrac - FixedMul (dc_texturemid, spryscale);
 		
 		// killough 1/25/98: here's where Medusa came in, because
@ -181,9 +182,9 @@ static void BlastMaskedColumn (void (*blastfunc)(const BYTE *pixels, const FText

 		// draw the texture
 		const FTexture::Span *spans;
-		const BYTE *pixels = tex->GetColumn (maskedtexturecol[dc_x], &spans);
+		const BYTE *pixels = tex->GetColumn (maskedtexturecol[dc_x] >> FRACBITS, &spans);
 		blastfunc (pixels, spans);
-		maskedtexturecol[dc_x] = SHRT_MAX;
+		maskedtexturecol[dc_x] = FIXED_MAX;
 	}
 	rw_light += rw_lightstep;
 	spryscale += rw_scalestep;
@ -243,7 +244,8 @@ void R_RenderMaskedSegRange (drawseg_t *ds, int x1, int x2)
 	}

 	MaskedSWall = (fixed_t *)(openings + ds->swall) - ds->x1;
-	maskedtexturecol = openings + ds->maskedtexturecol - ds->x1;
+	MaskedScaleY = tex->ScaleY ? tex->ScaleY : ty;
+	maskedtexturecol = (fixed_t *)(openings + ds->maskedtexturecol) - ds->x1;
 	spryscale = ds->iscale + ds->iscalestep * (x1 - ds->x1);
 	rw_scalestep = ds->iscalestep;

@ -274,84 +276,102 @@ void R_RenderMaskedSegRange (drawseg_t *ds, int x1, int x2)
 		dc_texturemid = MulScale3 (dc_texturemid - viewz, scaley) + curline->sidedef->rowoffset;
 	}

-	// [RH] Don't bother drawing segs that are completely offscreen
-	if (MulScale12 (globaldclip, ds->sz1) < -textop &&
-		MulScale12 (globaldclip, ds->sz2) < -textop)
-	{ // Texture top is below the bottom of the screen
-		goto clearfog;
-	}
-
-	if (MulScale12 (globaluclip, ds->sz1) > texheight - textop &&
-		MulScale12 (globaluclip, ds->sz2) > texheight - textop)
-	{ // Texture bottom is above the top of the screen
-		goto clearfog;
-	}
-
-	WallSZ1 = ds->sz1;
-	WallSZ2 = ds->sz2;
-	WallSX1 = ds->sx1;
-	WallSX2 = ds->sx2;
-
-	OWallMost (wallupper, textop);
-	OWallMost (walllower, textop - texheight);
-
-	for (i = x1; i <= x2; i++)
-	{
-		if (wallupper[i] < mceilingclip[i])
-			wallupper[i] = mceilingclip[i];
-	}
-	for (i = x1; i <= x2; i++)
-	{
-		if (walllower[i] > mfloorclip[i])
-			walllower[i] = mfloorclip[i];
-	}
-	mfloorclip = walllower;
-	mceilingclip = wallupper;
-
 	if (fixedlightlev)
 		dc_colormap = basecolormap + fixedlightlev;
 	else if (fixedcolormap)
 		dc_colormap = fixedcolormap;

-	// draw the columns one at a time
-	if (drawmode == DoDraw0)
-	{
-		for (dc_x = x1; dc_x <= x2; ++dc_x)
+	if (!(curline->linedef->flags & ML_WRAP_MIDTEX))
+	{ // Texture does not wrap vertically.
+
+		// [RH] Don't bother drawing segs that are completely offscreen
+		if (MulScale12 (globaldclip, ds->sz1) < -textop &&
+			MulScale12 (globaldclip, ds->sz2) < -textop)
+		{ // Texture top is below the bottom of the screen
+			goto clearfog;
+		}
+
+		if (MulScale12 (globaluclip, ds->sz1) > texheight - textop &&
+			MulScale12 (globaluclip, ds->sz2) > texheight - textop)
+		{ // Texture bottom is above the top of the screen
+			goto clearfog;
+		}
+
+		WallSZ1 = ds->sz1;
+		WallSZ2 = ds->sz2;
+		WallSX1 = ds->sx1;
+		WallSX2 = ds->sx2;
+
+		OWallMost (wallupper, textop);
+		OWallMost (walllower, textop - texheight);
+
+		for (i = x1; i <= x2; i++)
 		{
-			BlastMaskedColumn (R_DrawMaskedColumn, tex);
+			if (wallupper[i] < mceilingclip[i])
+				wallupper[i] = mceilingclip[i];
+		}
+		for (i = x1; i <= x2; i++)
+		{
+			if (walllower[i] > mfloorclip[i])
+				walllower[i] = mfloorclip[i];
+		}
+		mfloorclip = walllower;
+		mceilingclip = wallupper;
+
+		// draw the columns one at a time
+		if (drawmode == DoDraw0)
+		{
+			for (dc_x = x1; dc_x <= x2; ++dc_x)
+			{
+				BlastMaskedColumn (R_DrawMaskedColumn, tex);
+			}
+		}
+		else
+		{
+			// [RH] Draw up to four columns at once
+			int stop = (x2+1) & ~3;
+
+			if (x1 > x2)
+				goto clearfog;
+
+			dc_x = x1;
+
+			while ((dc_x < stop) && (dc_x & 3))
+			{
+				BlastMaskedColumn (R_DrawMaskedColumn, tex);
+				dc_x++;
+			}
+
+			while (dc_x < stop)
+			{
+				rt_initcols();
+				BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
+				BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
+				BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
+				BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex);
+				rt_draw4cols (dc_x - 3);
+				dc_x++;
+			}
+
+			while (dc_x <= x2)
+			{
+				BlastMaskedColumn (R_DrawMaskedColumn, tex);
+				dc_x++;
+			}
 		}
 	}
 	else
-	{
-		// [RH] Draw up to four columns at once
-		int stop = (x2+1) & ~3;
+	{ // Texture does wrap vertically.

-		if (x1 > x2)
-			goto clearfog;
-
-		dc_x = x1;
-
-		while ((dc_x < stop) && (dc_x & 3))
+		rw_offset = 0;
+		rw_pic = tex;
+		if (colfunc == basecolfunc)
 		{
-			BlastMaskedColumn (R_DrawMaskedColumn, tex);
-			dc_x++;
+			maskwallscan(x1, x2, mceilingclip, mfloorclip, MaskedSWall, maskedtexturecol);
 		}
-
-		while (dc_x < stop)
+		else
 		{
-			rt_initcols();
-			BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
-			BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
-			BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
-			BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex);
-			rt_draw4cols (dc_x - 3);
-			dc_x++;
-		}
-
-		while (dc_x <= x2)
-		{
-			BlastMaskedColumn (R_DrawMaskedColumn, tex);
-			dc_x++;
+			transmaskwallscan(x1, x2, mceilingclip, mfloorclip, MaskedSWall, maskedtexturecol);
 		}
 	}

@ -411,8 +431,8 @@ ebp = x2
 void wallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal,
 			   const BYTE *(*getcol)(FTexture *tex, int x))
 {
-	long x, shiftval;
-	long y1ve[4], y2ve[4], u4, d4, z;
+	int x, shiftval;
+	int y1ve[4], y2ve[4], u4, d4, z;
 	char bad;
 	fixed_t light = rw_light - rw_lightstep;
 	SDWORD yrepeat, texturemid, xoffset;
@ -636,6 +656,347 @@ void wallscan_striped (int x1, int x2, short *uwal, short *dwal, fixed_t *swal,
 	wallshade = startshade;
 }

+inline fixed_t mvline1 (fixed_t vince, byte *colormap, int count, fixed_t vplce, const byte *bufplce, byte *dest)
+{
+	dc_iscale = vince;
+	dc_colormap = colormap;
+	dc_count = count;
+	dc_texturefrac = vplce;
+	dc_source = bufplce;
+	dc_dest = dest;
+	return domvline1 ();
+}
+
+void maskwallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal,
+			   const BYTE *(*getcol)(FTexture *tex, int x))
+{
+	int x, shiftval;
+	BYTE *p;
+	int y1ve[4], y2ve[4], u4, d4, startx, dax, z;
+	char bad;
+	fixed_t light = rw_light - rw_lightstep;
+	SDWORD yrepeat, texturemid, xoffset;
+
+	if (rw_pic->UseType == FTexture::TEX_Null)
+	{
+		return;
+	}
+
+	if (!rw_pic->bMasked)
+	{ // Textures that aren't masked can use the faster wallscan.
+		wallscan (x1, x2, uwal, dwal, swal, lwal, getcol);
+		return;
+	}
+
+//extern cycle_t WallScanCycles;
+//clock (WallScanCycles);
+
+	rw_pic->GetHeight();	// Make sure texture size is loaded
+	shiftval = rw_pic->HeightBits;
+	setupmvline (32-shiftval);
+	yrepeat = (rw_pic->ScaleY ? rw_pic->ScaleY : ty) << (11 - shiftval);
+	texturemid = dc_texturemid << (16 - shiftval);
+	xoffset = rw_offset;
+
+	x = startx = x1;
+	p = x + dc_destorg;
+
+	if (fixedcolormap)
+	{
+		palookupoffse[0] = dc_colormap;
+		palookupoffse[1] = dc_colormap;
+		palookupoffse[2] = dc_colormap;
+		palookupoffse[3] = dc_colormap;
+	}
+
+	for(; (x <= x2) && ((size_t)p & 3); ++x, ++p)
+	{
+		light += rw_lightstep;
+		y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
+		y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
+		if (y2ve[0] <= y1ve[0]) continue;
+
+		if (!fixedcolormap)
+		{ // calculate lighting
+			dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+		}
+
+		dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
+		dc_dest = ylookup[y1ve[0]] + p;
+		dc_iscale = swal[x] * yrepeat;
+		dc_count = y2ve[0] - y1ve[0];
+		dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
+
+		domvline1();
+	}
+
+	for(; x <= x2-3; x += 4, p+= 4)
+	{
+		bad = 0;
+		for (z = 3, dax = x+3; z >= 0; --z, --dax)
+		{
+			y1ve[z] = uwal[dax];
+			y2ve[z] = dwal[dax];
+			if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
+
+			bufplce[z] = getcol (rw_pic, (lwal[dax] + xoffset) >> FRACBITS);
+			vince[z] = swal[dax] * yrepeat;
+			vplce[z] = texturemid + FixedMul (vince[z], (y1ve[z]<<FRACBITS)-centeryfrac+FRACUNIT);
+		}
+		if (bad == 15)
+		{
+			light += rw_lightstep << 2;
+			continue;
+		}
+
+		if (!fixedcolormap)
+		{
+			for (z = 0; z < 4; ++z)
+			{
+				light += rw_lightstep;
+				palookupoffse[z] = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+			}
+		}
+
+		u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
+		d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
+
+		if ((bad != 0) || (u4 >= d4))
+		{
+			for (z = 0; z < 4; ++z)
+			{
+				if (!(bad & 1))
+				{
+					mvline1(vince[z],palookupoffse[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+p+z);
+				}
+				bad >>= 1;
+			}
+			continue;
+		}
+
+		for (z = 0; z < 4; ++z)
+		{
+			if (u4 > y1ve[z])
+			{
+				vplce[z] = mvline1(vince[z],palookupoffse[z],u4-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+p+z);
+			}
+		}
+
+		if (d4 > u4)
+		{
+			dc_count = d4-u4;
+			dc_dest = ylookup[u4]+p;
+			domvline4();
+		}
+
+		BYTE *i = p+ylookup[d4];
+		for (z = 0; z < 4; ++z)
+		{
+			if (y2ve[z] > d4)
+			{
+				mvline1(vince[z],palookupoffse[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z);
+			}
+		}
+	}
+	for(; x <= x2; ++x, ++p)
+	{
+		light += rw_lightstep;
+		y1ve[0] = uwal[x];
+		y2ve[0] = dwal[x];
+		if (y2ve[0] <= y1ve[0]) continue;
+
+		if (!fixedcolormap)
+		{ // calculate lighting
+			dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+		}
+
+		dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
+		dc_dest = ylookup[y1ve[0]] + p;
+		dc_iscale = swal[x] * yrepeat;
+		dc_count = y2ve[0] - y1ve[0];
+		dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
+
+		domvline1();
+	}
+
+//unclock(WallScanCycles);
+
+	NetUpdate ();
+}
+
+inline void preptmvline1 (fixed_t vince, byte *colormap, int count, fixed_t vplce, const byte *bufplce, byte *dest)
+{
+	dc_iscale = vince;
+	dc_colormap = colormap;
+	dc_count = count;
+	dc_texturefrac = vplce;
+	dc_source = bufplce;
+	dc_dest = dest;
+}
+
+void transmaskwallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal,
+			   const BYTE *(*getcol)(FTexture *tex, int x))
+{
+	fixed_t (*tmvline1)();
+	void (*tmvline4)();
+	int x, shiftval;
+	BYTE *p;
+	int y1ve[4], y2ve[4], u4, d4, startx, dax, z;
+	char bad;
+	fixed_t light = rw_light - rw_lightstep;
+	SDWORD yrepeat, texturemid, xoffset;
+
+	if (rw_pic->UseType == FTexture::TEX_Null)
+	{
+		return;
+	}
+
+	if (!R_GetTransMaskDrawers (&tmvline1, &tmvline4))
+	{
+		// The current translucency is unsupported, so draw with regular maskwallscan instead.
+		maskwallscan (x1, x2, uwal, dwal, swal, lwal, getcol);
+		return;
+	}
+
+//extern cycle_t WallScanCycles;
+//clock (WallScanCycles);
+
+	rw_pic->GetHeight();	// Make sure texture size is loaded
+	shiftval = rw_pic->HeightBits;
+	setuptmvline (32-shiftval);
+	yrepeat = (rw_pic->ScaleY ? rw_pic->ScaleY : ty) << (11 - shiftval);
+	texturemid = dc_texturemid << (16 - shiftval);
+	xoffset = rw_offset;
+
+	x = startx = x1;
+	p = x + dc_destorg;
+
+	if (fixedcolormap)
+	{
+		palookupoffse[0] = dc_colormap;
+		palookupoffse[1] = dc_colormap;
+		palookupoffse[2] = dc_colormap;
+		palookupoffse[3] = dc_colormap;
+	}
+
+	for(; (x <= x2) && ((size_t)p & 3); ++x, ++p)
+	{
+		light += rw_lightstep;
+		y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
+		y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
+		if (y2ve[0] <= y1ve[0]) continue;
+
+		if (!fixedcolormap)
+		{ // calculate lighting
+			dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+		}
+
+		dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
+		dc_dest = ylookup[y1ve[0]] + p;
+		dc_iscale = swal[x] * yrepeat;
+		dc_count = y2ve[0] - y1ve[0];
+		dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
+
+		tmvline1();
+	}
+
+	for(; x <= x2-3; x += 4, p+= 4)
+	{
+		bad = 0;
+		for (z = 3, dax = x+3; z >= 0; --z, --dax)
+		{
+			y1ve[z] = uwal[dax];
+			y2ve[z] = dwal[dax];
+			if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
+
+			bufplce[z] = getcol (rw_pic, (lwal[dax] + xoffset) >> FRACBITS);
+			vince[z] = swal[dax] * yrepeat;
+			vplce[z] = texturemid + FixedMul (vince[z], (y1ve[z]<<FRACBITS)-centeryfrac+FRACUNIT);
+		}
+		if (bad == 15)
+		{
+			light += rw_lightstep << 2;
+			continue;
+		}
+
+		if (!fixedcolormap)
+		{
+			for (z = 0; z < 4; ++z)
+			{
+				light += rw_lightstep;
+				palookupoffse[z] = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+			}
+		}
+
+		u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
+		d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
+
+		if ((bad != 0) || (u4 >= d4))
+		{
+			for (z = 0; z < 4; ++z)
+			{
+				if (!(bad & 1))
+				{
+					preptmvline1(vince[z],palookupoffse[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+p+z);
+					tmvline1();
+				}
+				bad >>= 1;
+			}
+			continue;
+		}
+
+		for (z = 0; z < 4; ++z)
+		{
+			if (u4 > y1ve[z])
+			{
+				preptmvline1(vince[z],palookupoffse[z],u4-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+p+z);
+				vplce[z] = tmvline1();
+			}
+		}
+
+		if (d4 > u4)
+		{
+			dc_count = d4-u4;
+			dc_dest = ylookup[u4]+p;
+			tmvline4();
+		}
+
+		BYTE *i = p+ylookup[d4];
+		for (z = 0; z < 4; ++z)
+		{
+			if (y2ve[z] > d4)
+			{
+				preptmvline1(vince[z],palookupoffse[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z);
+				tmvline1();
+			}
+		}
+	}
+	for(; x <= x2; ++x, ++p)
+	{
+		light += rw_lightstep;
+		y1ve[0] = uwal[x];
+		y2ve[0] = dwal[x];
+		if (y2ve[0] <= y1ve[0]) continue;
+
+		if (!fixedcolormap)
+		{ // calculate lighting
+			dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
+		}
+
+		dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
+		dc_dest = ylookup[y1ve[0]] + p;
+		dc_iscale = swal[x] * yrepeat;
+		dc_count = y2ve[0] - y1ve[0];
+		dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
+
+		tmvline1();
+	}
+
+//unclock(WallScanCycles);
+
+	NetUpdate ();
+}
+
 //
 // R_RenderSegLoop
 // Draws zero, one, or two textures for walls.
@ -929,7 +1290,7 @@ void R_NewWall (bool needlights)

 				|| (backsector->floor_angle + backsector->base_floor_angle) != (frontsector->floor_angle + frontsector->base_floor_angle)

-				|| (sidedef->midtexture && linedef->flags & ML_CLIP_MIDTEX)
+				|| (sidedef->midtexture && linedef->flags & (ML_CLIP_MIDTEX|ML_WRAP_MIDTEX))
 				;

 			markceiling = (frontsector->ceilingpic != skyflatnum ||
@ -958,7 +1319,7 @@ void R_NewWall (bool needlights)

 				|| (backsector->ceiling_angle + backsector->base_ceiling_angle) != (frontsector->ceiling_angle + frontsector->base_ceiling_angle)

-				|| (sidedef->midtexture && linedef->flags & ML_CLIP_MIDTEX)
+				|| (sidedef->midtexture && linedef->flags & (ML_CLIP_MIDTEX|ML_WRAP_MIDTEX))
 				);
 		}

@ -1235,7 +1596,7 @@ void R_StoreWallRange (int start, int stop)
 			(WallSZ1 >= TOO_CLOSE_Z && WallSZ2 >= TOO_CLOSE_Z))
 		{
 			fixed_t *swal;
-			short *lwal;
+			fixed_t *lwal;
 			int i;

 			maskedtexture = true;
@ -1243,22 +1604,22 @@ void R_StoreWallRange (int start, int stop)
 			ds_p->bFogBoundary = IsFogBoundary (frontsector, backsector);
 			if (sidedef->midtexture != 0)
 			{
-				ds_p->maskedtexturecol = R_NewOpening (stop - start);
+				ds_p->maskedtexturecol = R_NewOpening ((stop - start) * 2);
 				ds_p->swall = R_NewOpening ((stop - start) * 2);

-				lwal = openings + ds_p->maskedtexturecol;
+				lwal = (fixed_t *)(openings + ds_p->maskedtexturecol);
 				swal = (fixed_t *)(openings + ds_p->swall);
 				int scaley = TexMan(sidedef->midtexture)->ScaleY ?
 					TexMan(sidedef->midtexture)->ScaleY : ty;
 				int xoffset = rw_offset;
 				for (i = start; i < stop; i++)
 				{
-					*lwal++ = (short)((lwall[i] + xoffset) >> FRACBITS);
-					*swal++ = MulScale5 (swall[i], scaley);
+					*lwal++ = lwall[i] + xoffset;
+					*swal++ = swall[i];
 				}

-				fixed_t istart = *((fixed_t *)(openings + ds_p->swall));
-				fixed_t iend = *(swal - 1);
+				fixed_t istart = MulScale5 (*((fixed_t *)(openings + ds_p->swall)), scaley);
+				fixed_t iend = MulScale5 (*(swal - 1), scaley);

 				if (istart < 3 && istart >= 0) istart = 3;
 				if (istart > -3 && istart < 0) istart = -3;
--- a/src/v_video.cpp
+++ b/src/v_video.cpp
@ -542,6 +542,12 @@ DSimpleCanvas::DSimpleCanvas (int width, int height)
 	}
 	else
 	{
+		// If we couldn't figure out the CPU's L1 cache line size, assume
+		// it's 32 bytes wide.
+		if (CPU.DataL1LineSize == 0)
+		{
+			CPU.DataL1LineSize = 32;
+		}
 		// The Athlon and P3 have very different caches, apparently.
 		// I am going to generalize the Athlon's performance to all AMD
 		// processors and the P3's to all non-AMD processors. I don't know
@ -553,7 +559,7 @@ DSimpleCanvas::DSimpleCanvas (int width, int height)
 		}
 		else
 		{
-			Pitch = width + CPU.DataL1LineSize - 8;
+			Pitch = width + MAX(0, CPU.DataL1LineSize - 8);
 		}
 	}
 	MemBuffer = new BYTE[Pitch * height];
--- a/tools/dehsupp/Makefile.mgw
+++ b/tools/dehsupp/Makefile.mgw
@ -1,8 +1,14 @@
-EXE = dehsupp.exe
+ifeq (Windows_NT,$(OS))
+  EXE = dehsupp.exe
+  CCDV = @../../ccdv
+  CFLAGS = $(LOC) -Os -Wall -fomit-frame-pointer
+else
+  EXE = dehsupp
+  CCDV =
+  CFLAGS = -Dstricmp=strcasecmp -Dstrnicmp=strncasecmp -Os -Wall -fomit-frame-pointer
+endif

-CCDV = @../../ccdv
 CC = gcc
-CFLAGS = $(LOC) -Os -Wall -fomit-frame-pointer

 BISON = bison
 BISONFLAGS = 
@ -17,8 +23,13 @@ $(EXE): $(OBJS)
 .PHONY: clean

 clean:
+ifeq (Windows_NT,$(OS))
 	-del /q /f $(EXE) 2>nul
 	-del /q /f *.o 2>nul
+else
+	rm -f $(EXE)
+	rm -f *.o
+endif

 parse.tab.o: parse.tab.c
 	$(CCDV) $(CC) $(CFLAGS) -c -o $@ $<
--- a/tools/makewad/Makefile.mgw
+++ b/tools/makewad/Makefile.mgw
--- a/tools/xlatcc/Makefile.mgw
+++ b/tools/xlatcc/Makefile.mgw
@ -1,8 +1,14 @@
-EXE = xlatcc.exe
+ifeq (Windows_NT,$(OS))
+  EXE = xlatcc.exe
+  CCDV = @../../ccdv
+  CFLAGS = $(LOC) -Os -Wall -fomit-frame-pointer
+else
+  EXE = xlatcc
+  CCDV =
+  CFLAGS = -Dstricmp=strcasecmp -Dstrnicmp=strncasecmp $(LOC) -Os -Wall -fomit-frame-pointer
+endif

-CCDV = @../../ccdv
 CC = gcc
-CFLAGS = $(LOC) -Os -Wall -fomit-frame-pointer

 BISON = bison
 BISONFLAGS = 
@ -17,8 +23,13 @@ $(EXE): $(OBJS)
 .PHONY: clean

 clean:
+ifeq (Windows_NT,$(OS))
 	-del /q /f $(EXE) 2>nul
 	-del /q /f *.o 2>nul
+else
+	rm -f $(EXE)
+	rm -f *.o
+endif

 xlat-parse.tab.o: xlat-parse.tab.c xlat.h
 	$(CCDV) $(CC) $(CFLAGS) -c -o $@ $<
--- a/wadsrc/zdoom.lst
+++ b/wadsrc/zdoom.lst
@ -165,17 +165,17 @@ sounds/railgf1.flac		    railgunfire.flac
 ========
 # Mapinfos

-d1info.txt				    mapinfo/doom1.txt
-d2info.txt				    mapinfo/doom2.txt
-plutinfo.txt			    mapinfo/plutonia.txt
-tntinfo.txt				    mapinfo/tnt.txt
-herinfo.txt				    mapinfo/heretic.txt
-hexninfo.txt			    mapinfo/hexen.txt
-strfinfo.txt			    mapinfo/strife.txt
+mapinfo/doom1.txt			mapinfo/doom1.txt
+mapinfo/doom2.txt			mapinfo/doom2.txt
+mapinfo/plutonia.txt			mapinfo/plutonia.txt
+mapinfo/tnt.txt				mapinfo/tnt.txt
+mapinfo/heretic.txt			mapinfo/heretic.txt
+mapinfo/hexen.txt			mapinfo/hexen.txt
+mapinfo/strife.txt			mapinfo/strife.txt

 ========
 # Strife's helper script
-acs/strfhelp.o    			strfhelp.o
+acs/strfhelp.o				strfhelp.o


 ========