From c7cbc27efb0f07d1ac7a089fe7ac0ed1ce6fa16e Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sat, 24 May 2025 23:36:32 -0400
Subject: [PATCH 01/11] completly borked remove flats port

Completey fucked color and brightmap handling for floors.
---
 src/doomdef.h           |   3 -
 src/hardware/hw_cache.c | 205 ++++++++++--------------------
 src/hardware/hw_main.c  | 122 +++---------------
 src/p_setup.c           |  99 ++++-----------
 src/p_setup.h           |  41 +-----
 src/p_spec.c            | 110 ++--------------
 src/p_spec.h            |   3 -
 src/r_picformats.c      |   2 +-
 src/r_plane.cpp         |  55 ++++----
 src/r_textures.c        | 270 +++++++++++++---------------------------
 src/r_textures.h        |  11 +-
 11 files changed, 238 insertions(+), 683 deletions(-)

diff --git a/src/doomdef.h b/src/doomdef.h
index da551b5b2..489302e48 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -515,9 +515,6 @@ extern int compuncommitted;
 #define NO_PNG_LUMPS
 #endif
 
-/// Render flats on walls
-#define WALLFLATS
-
 /// Divide volume of music and sounds by this much (loudest sounds on earth)
 #define VOLUME_DIVIDER 4
 #define USER_VOLUME_SCALE 2
diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 4b9da2616..7da9716c8 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -521,7 +521,6 @@ static void HWR_GenerateTexture(GLMapTexture_t *grtex, INT32 texnum, boolean noe
 			realpatch = (softwarepatch_t *)Picture_PNGConvert(pdata, PICFMT_DOOMPATCH, NULL, NULL, NULL, NULL, lumplength, NULL, 0);
 		else
 #endif
-#ifdef WALLFLATS
 		if (texture->type == TEXTURETYPE_FLAT)
 		{
 			if (doremap)
@@ -529,7 +528,6 @@ static void HWR_GenerateTexture(GLMapTexture_t *grtex, INT32 texnum, boolean noe
 			realpatch = (softwarepatch_t *)Picture_Convert(PICFMT_FLAT, pdata, PICFMT_DOOMPATCH, 0, NULL, texture->width, texture->height, 0, 0, 0);
 		}
 		else
-#endif
 		{
 			dealloc = false;
 			if (doremap)
@@ -767,7 +765,7 @@ void HWR_LoadMapTextures(size_t pnumtextures)
 	gl_textures = calloc(gl_numtextures, sizeof(*gl_textures));
 	gl_flats = calloc(gl_numtextures, sizeof(*gl_flats));
 
-	if ((gl_textures == NULL) || (gl_flats == NULL))
+	if (gl_textures == NULL || gl_flats == NULL)
 		I_Error("HWR_LoadMapTextures: ran out of memory for OpenGL textures");
 
 	gl_maptexturesloaded = true;
@@ -896,36 +894,6 @@ static void HWR_CacheFlat(GLMipmap_t *grMipmap, lumpnum_t flatlumpnum)
 			flat[steppy] = grMipmap->colormap->source[flat[steppy]];
 }
 
-static void HWR_CacheTextureAsFlat(GLMipmap_t *grMipmap, INT32 texturenum, boolean noencoremap)
-{
-	UINT8 *flat;
-	UINT8 *converted;
-	size_t size;
-	size_t i;
-	UINT8 *colormap = colormaps;
-
-	if (!noencoremap && encoremap)
-	{
-		colormap += COLORMAP_REMAPOFFSET;
-	}
-
-	// setup the texture info
-	grMipmap->format = GL_TEXFMT_P_8;
-	grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
-
-	grMipmap->width  = (UINT16)textures[texturenum]->width;
-	grMipmap->height = (UINT16)textures[texturenum]->height;
-	size = (grMipmap->width * grMipmap->height);
-
-	flat = Z_Malloc(size, PU_HWRCACHE, &grMipmap->data);
-	converted = (UINT8 *)Picture_TextureToFlat(texturenum);
-	for (i = 0; i < size; i++)
-	{
-		flat[i] = colormap[converted[i]];
-	}
-	Z_Free(converted);
-}
-
 // Download a Doom 'flat' to the hardware cache and make it ready for use
 void HWR_GetRawFlat(lumpnum_t flatlumpnum, boolean noencoremap)
 {
@@ -966,125 +934,80 @@ void HWR_GetRawFlat(lumpnum_t flatlumpnum, boolean noencoremap)
 
 void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 {
-	// Who knows?
-	if (levelflat == NULL)
-		return;
-
-	if (levelflat->type == LEVELFLAT_FLAT)
-		HWR_GetRawFlat(levelflat->u.flat.lumpnum, noencoremap);
-	else if (levelflat->type == LEVELFLAT_TEXTURE)
+	if (levelflat->type == LEVELFLAT_NONE)
 	{
-		GLMapTexture_t *grtex;
-		INT32 texturenum = levelflat->u.texture.num;
-#ifdef PARANOIA
-		if ((unsigned)texturenum >= gl_numtextures)
-			I_Error("HWR_GetLevelFlat: texturenum >= numtextures");
-#endif
+		HWR_SetCurrentTexture(NULL);
+		return;
+	}
 
-		// Who knows?
-		if (texturenum == 0 || texturenum == -1)
-			return;
+	INT32 texturenum = texturetranslation[levelflat->texture_id];
+	INT32 brightmapnum = R_GetTextureBrightmap(texturenum);
+	if (texturenum <= 0)
+	{
+		HWR_SetCurrentTexture(NULL);
+		return;
+	}
 
-		// Every texture in memory, stored as a 8-bit flat. Wow!
-		grtex = &gl_flats[texturenum];
+	GLMapTexture_t *grtex = &gl_flats[texturenum];
+	GLMipmap_t *grMipmap = &grtex->mipmap;
 
-		// Generate flat if missing from the cache
-		if (!grtex->mipmap.data && !grtex->mipmap.downloaded)
+	if (!grMipmap->data && !grMipmap->downloaded)
+	{
+		UINT8 *colormap = colormaps;
+
+		if (!noencoremap && encoremap)
 		{
-			HWR_CacheTextureAsFlat(&grtex->mipmap, texturenum, noencoremap);
-
-			if (!noencoremap && encoremap)
-			{
-				grtex->mipmap.colormap = Z_Calloc(sizeof(*grtex->mipmap.colormap), PU_HWRPATCHCOLMIPMAP, NULL);
-				grtex->mipmap.colormap->source = colormaps + COLORMAP_REMAPOFFSET;
-				M_Memcpy(grtex->mipmap.colormap->data, colormaps + COLORMAP_REMAPOFFSET, 256);
-			}
+			colormap += COLORMAP_REMAPOFFSET;
 		}
 
-		// If hardware does not have the texture, then call pfnSetTexture to upload it
-		if (!grtex->mipmap.downloaded)
+		grMipmap->format = GL_TEXFMT_P_8;
+		grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
+
+		grMipmap->width  = (UINT16)textures[texturenum]->width;
+		grMipmap->height = (UINT16)textures[texturenum]->height;
+
+		size_t size = grMipmap->width * grMipmap->height;
+		memcpy(Z_Malloc(size, PU_HWRCACHE, &grMipmap->data), R_GetFlatForTexture(texturenum), size);
+
+		if (!noencoremap && encoremap)
+		{
+			grtex->mipmap.colormap = Z_Calloc(sizeof(*grtex->mipmap.colormap), PU_HWRPATCHCOLMIPMAP, NULL);
+			grtex->mipmap.colormap->source = colormaps + COLORMAP_REMAPOFFSET;
+			M_Memcpy(grtex->mipmap.colormap->data, colormaps + COLORMAP_REMAPOFFSET, 256);
+		}
+	}
+
+	if (!grMipmap->downloaded)
+		HWD.pfnSetTexture(&grtex->mipmap);
+
+	HWR_SetCurrentTexture(&grtex->mipmap);
+
+	Z_ChangeTag(grMipmap->data, PU_HWRCACHE_UNLOCKED);
+
+	if (brightmapnum)
+	{
+		grtex = &gl_flats[brightmapnum];
+		grMipmap = &grtex->mipmap;
+
+		if (!grMipmap->data && !grMipmap->downloaded)
+		{
+			grMipmap->format = GL_TEXFMT_P_8;
+			grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
+
+			grMipmap->width  = (UINT16)textures[brightmapnum]->width;
+			grMipmap->height = (UINT16)textures[brightmapnum]->height;
+
+			size_t size = grMipmap->width * grMipmap->height;
+			memcpy(Z_Malloc(size, PU_HWRCACHE, &grMipmap->data), R_GetFlatForTexture(brightmapnum), size);
+		}
+
+		if (!grMipmap->downloaded)
 			HWD.pfnSetTexture(&grtex->mipmap);
+
 		HWR_SetCurrentTexture(&grtex->mipmap);
 
-		// The system-memory data can be purged now.
-		Z_ChangeTag(grtex->mipmap.data, PU_HWRCACHE_UNLOCKED);
-
-		if ((texturenum = R_GetTextureBrightmap(texturenum)))
-		{
-			// Every texture in memory, stored as a 8-bit flat. Wow!
-			grtex = &gl_flats[texturenum];
-
-			// Generate flat if missing from the cache
-			if (!grtex->mipmap.data && !grtex->mipmap.downloaded)
-				HWR_CacheTextureAsFlat(&grtex->mipmap, texturenum, true);
-
-			grtex->mipmap.flags |= TF_BRIGHTMAP;
-
-			// If hardware does not have the texture, then call pfnSetTexture to upload it
-			if (!grtex->mipmap.downloaded)
-				HWD.pfnSetTexture(&grtex->mipmap);
-			HWR_SetCurrentTexture(&grtex->mipmap);
-
-			// The system-memory data can be purged now.
-			Z_ChangeTag(grtex->mipmap.data, PU_HWRCACHE_UNLOCKED);
-		}
+		Z_ChangeTag(grMipmap->data, PU_HWRCACHE_UNLOCKED);
 	}
-	else if (levelflat->type == LEVELFLAT_PATCH)
-	{
-		patch_t *patch = W_CachePatchNum(levelflat->u.flat.lumpnum, PU_CACHE);
-		levelflat->width = (UINT16)(patch->width);
-		levelflat->height = (UINT16)(patch->height);
-		HWR_GetPatch(patch);
-	}
-#ifndef NO_PNG_LUMPS
-	else if (levelflat->type == LEVELFLAT_PNG)
-	{
-		GLMipmap_t *mipmap = levelflat->mipmap;
-
-		// Cache the picture.
-		if (!levelflat->mippic)
-		{
-			INT32 pngwidth = 0, pngheight = 0;
-			void *pic = Picture_PNGConvert(W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_CACHE), PICFMT_FLAT, &pngwidth, &pngheight, NULL, NULL, W_LumpLength(levelflat->u.flat.lumpnum), NULL, 0);
-
-			Z_ChangeTag(pic, PU_LEVEL);
-			Z_SetUser(pic, &levelflat->mippic);
-
-			levelflat->width = (UINT16)pngwidth;
-			levelflat->height = (UINT16)pngheight;
-		}
-
-		// Make the mipmap.
-		if (mipmap == NULL)
-		{
-			mipmap = Z_Calloc(sizeof(GLMipmap_t), PU_STATIC, NULL);
-			mipmap->format = GL_TEXFMT_P_8;
-			mipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
-			levelflat->mipmap = mipmap;
-		}
-
-		if (!mipmap->data && !mipmap->downloaded)
-		{
-			UINT8 *flat;
-			size_t size;
-
-			if (levelflat->mippic == NULL)
-				I_Error("HWR_GetLevelFlat: levelflat->mippic == NULL");
-
-			mipmap->width = levelflat->width;
-			mipmap->height = levelflat->height;
-
-			size = (mipmap->width * mipmap->height);
-			flat = Z_Malloc(size, PU_LEVEL, &mipmap->data);
-			M_Memcpy(flat, levelflat->mippic, size);
-		}
-
-		// Tell the hardware driver to bind the current texture to the flat's mipmap
-		HWR_SetCurrentTexture(mipmap);
-	}
-#endif
-	else // set no texture
-		HWR_SetCurrentTexture(NULL);
 }
 
 // --------------------+
diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index 24e5897fd..6a06bc4e8 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -396,8 +396,6 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 	INT32             i;
 	float           flatxref,flatyref;
 	float fflatwidth = 64.0f, fflatheight = 64.0f;
-	INT32 flatflag = 63;
-	boolean texflat = false;
 	float scrollx = 0.0f, scrolly = 0.0f, anglef = 0.0f;
 	angle_t angle = 0;
 	FSurfaceInfo    Surf;
@@ -452,34 +450,16 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 	// set texture for polygon
 	if (levelflat != NULL)
 	{
-		if (levelflat->type == LEVELFLAT_FLAT)
-		{
-			size_t len = W_LumpLength(levelflat->u.flat.lumpnum);
-			size_t sflatsize = R_FlatDimensionsFromLumpSize(len);
-			fflatwidth = fflatheight = (double)sflatsize;
-			flatflag = sflatsize-1;
-		}
-		else
-		{
-			if (levelflat->type == LEVELFLAT_TEXTURE)
-			{
-				fflatwidth = textures[levelflat->u.texture.num]->width;
-				fflatheight = textures[levelflat->u.texture.num]->height;
-			}
-			else if (levelflat->type == LEVELFLAT_PATCH || levelflat->type == LEVELFLAT_PNG)
-			{
-				fflatwidth = levelflat->width;
-				fflatheight = levelflat->height;
-			}
-			texflat = true;
-		}
+		texture_t *texture = textures[R_GetTextureNumForFlat(levelflat)];
+		fflatwidth = texture->width;
+		fflatheight = texture->height;
 	}
 	else // set no texture
 		HWR_SetCurrentTexture(NULL);
 
 	// reference point for flat texture coord for each vertex around the polygon
-	flatxref = (float)(((fixed_t)pv->x & (~flatflag)) / fflatwidth);
-	flatyref = (float)(((fixed_t)pv->y & (~flatflag)) / fflatheight);
+	flatxref = 0.0;
+	flatyref = 0.0;
 
 	// transform
 	if (FOFsector != NULL)
@@ -514,30 +494,13 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 	}
 
 
-	if (angle) // Only needs to be done if there's an altered angle
-	{
-		tempxsow = flatxref;
-		tempytow = flatyref;
-
-		anglef = ANG2RAD(InvAngle(angle));
-
-		flatxref = (tempxsow * cos(anglef)) - (tempytow * sin(anglef));
-		flatyref = (tempxsow * sin(anglef)) + (tempytow * cos(anglef));
-	}
+	anglef = ANG2RAD(InvAngle(angle));
 
 #define SETUP3DVERT(vert, vx, vy) {\
-		/* Hurdler: add scrolling texture on floor/ceiling */\
-		if (texflat)\
-		{\
-			vert->s = (float)((vx) / fflatwidth) + scrollx;\
-			vert->t = -(float)((vy) / fflatheight) + scrolly;\
-		}\
-		else\
-		{\
-			vert->s = (float)(((vx) / fflatwidth) - flatxref + scrollx);\
-			vert->t = (float)(flatyref - ((vy) / fflatheight) + scrolly);\
-		}\
-\
+		/* Hurdler: add scrolling texture on floor/ceiling */ \
+		vert->s = (float)(((vx) / fflatwidth) - flatxref + scrollx);\
+		vert->t = (float)(flatyref - ((vy) / fflatheight) + scrolly);\
+ \
 		/* Need to rotate before translate */\
 		if (angle) /* Only needs to be done if there's an altered angle */\
 		{\
@@ -2479,9 +2442,6 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 	float height = FIXED_TO_FLOAT(fixedheight); // constant y for all points on the convex flat polygon
 	float flatxref, flatyref;
 	float fflatwidth = 64.0f, fflatheight = 64.0f;
-	INT32 flatflag = 63;
-
-	boolean texflat = false;
 
 	float scrollx = 0.0f, scrolly = 0.0f;
 	angle_t angle = 0;
@@ -2509,37 +2469,16 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 	// set texture for polygon
 	if (levelflat != NULL)
 	{
-		if (levelflat->type == LEVELFLAT_FLAT)
-		{
-			size_t len = W_LumpLength(levelflat->u.flat.lumpnum);
-			size_t sflatsize = R_FlatDimensionsFromLumpSize(len);
-			fflatwidth = fflatheight = (double)sflatsize;
-			flatflag = sflatsize-1;
-		}
-		else
-		{
-			if (levelflat->type == LEVELFLAT_TEXTURE)
-			{
-				fflatwidth = textures[levelflat->u.texture.num]->width;
-				fflatheight = textures[levelflat->u.texture.num]->height;
-			}
-			else if (levelflat->type == LEVELFLAT_PATCH || levelflat->type == LEVELFLAT_PNG)
-			{
-				fflatwidth = levelflat->width;
-				fflatheight = levelflat->height;
-			}
-			texflat = true;
-		}
+		texture_t *texture = textures[R_GetTextureNumForFlat(levelflat)];
+		fflatwidth = texture->width;
+		fflatheight = texture->height;
 	}
 	else // set no texture
 		HWR_SetCurrentTexture(NULL);
 
 	// reference point for flat texture coord for each vertex around the polygon
-	flatxref = FIXED_TO_FLOAT(polysector->origVerts[0].x);
-	flatyref = FIXED_TO_FLOAT(polysector->origVerts[0].y);
-
-	flatxref = (float)(((fixed_t)flatxref & (~flatflag)) / fflatwidth);
-	flatyref = (float)(((fixed_t)flatyref & (~flatflag)) / fflatheight);
+	flatxref = 0.0;
+	flatyref = 0.0;
 
 	// transform
 	v3d = planeVerts;
@@ -2575,44 +2514,19 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 		}
 	}
 
-	if (angle) // Only needs to be done if there's an altered angle
-	{
-		angle = (InvAngle(angle))>>ANGLETOFINESHIFT;
-
-		// This needs to be done so that it scrolls in a different direction after rotation like software
-		/*tempxs = FLOAT_TO_FIXED(scrollx);
-		tempyt = FLOAT_TO_FIXED(scrolly);
-		scrollx = (FIXED_TO_FLOAT(FixedMul(tempxs, FINECOSINE(angle)) - FixedMul(tempyt, FINESINE(angle))));
-		scrolly = (FIXED_TO_FLOAT(FixedMul(tempxs, FINESINE(angle)) + FixedMul(tempyt, FINECOSINE(angle))));*/
-
-		// This needs to be done so everything aligns after rotation
-		// It would be done so that rotation is done, THEN the translation, but I couldn't get it to rotate AND scroll like software does
-		tempxs = FLOAT_TO_FIXED(flatxref);
-		tempyt = FLOAT_TO_FIXED(flatyref);
-		flatxref = (FIXED_TO_FLOAT(FixedMul(tempxs, FINECOSINE(angle)) - FixedMul(tempyt, FINESINE(angle))));
-		flatyref = (FIXED_TO_FLOAT(FixedMul(tempxs, FINESINE(angle)) + FixedMul(tempyt, FINECOSINE(angle))));
-	}
-
 	for (i = 0; i < (INT32)nrPlaneVerts; i++,v3d++)
 	{
 		// Go from the polysector's original vertex locations
 		// Means the flat is offset based on the original vertex locations
-		if (texflat)
-		{
-			v3d->s = (float)(FIXED_TO_FLOAT(polysector->origVerts[i].x) / fflatwidth) + scrollx;
-			v3d->t = -(float)(FIXED_TO_FLOAT(polysector->origVerts[i].y) / fflatheight) + scrolly;
-		}
-		else
-		{
-			v3d->s = (float)((FIXED_TO_FLOAT(polysector->origVerts[i].x) / fflatwidth) - flatxref + scrollx);
-			v3d->t = (float)(flatyref - (FIXED_TO_FLOAT(polysector->origVerts[i].y) / fflatheight) + scrolly);
-		}
+		v3d->s = (float)((FIXED_TO_FLOAT(polysector->origVerts[i].x) / fflatwidth) - flatxref + scrollx);
+		v3d->t = (float)(flatyref - (FIXED_TO_FLOAT(polysector->origVerts[i].y) / fflatheight) + scrolly);
 
 		// Need to rotate before translate
 		if (angle) // Only needs to be done if there's an altered angle
 		{
 			tempxs = FLOAT_TO_FIXED(v3d->s);
 			tempyt = FLOAT_TO_FIXED(v3d->t);
+			angle = ANG2RAD(InvAngle(angle));
 			v3d->s = (FIXED_TO_FLOAT(FixedMul(tempxs, FINECOSINE(angle)) - FixedMul(tempyt, FINESINE(angle))));
 			v3d->t = (FIXED_TO_FLOAT(FixedMul(tempxs, FINESINE(angle)) + FixedMul(tempyt, FINECOSINE(angle))));
 		}
diff --git a/src/p_setup.c b/src/p_setup.c
index fdf2284ca..43c239f08 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -539,13 +539,8 @@ size_t P_PrecacheLevelFlats(void)
 	flatmemory = 0;
 	for (i = 0; i < numlevelflats; i++)
 	{
-		if (levelflats[i].type == LEVELFLAT_FLAT)
-		{
-			lump = levelflats[i].u.flat.lumpnum;
-			if (devparm)
-				flatmemory += W_LumpLength(lump);
-			R_GetFlat(lump);
-		}
+		if (levelflats[i].type != LEVELFLAT_NONE)
+			R_GetFlat(&levelflats[i]);
 	}
 	return flatmemory;
 }
@@ -557,18 +552,8 @@ or NULL if we want to allocate it now.
 static INT32
 Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 {
-#ifndef NO_PNG_LUMPS
-	UINT8         buffer[8];
-#endif
-
-	lumpnum_t    flatnum;
-	int       texturenum;
-	UINT8     *flatpatch;
-	size_t    lumplength;
-	size_t i;
-
 	// Scan through the already found flats, return if it matches.
-	for (i = 0; i < numlevelflats; i++)
+	for (size_t i = 0; i < numlevelflats; i++)
 	{
 		if (strnicmp(levelflat[i].name, flatname, 8) == 0)
 			return i;
@@ -592,65 +577,38 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 	strlcpy(levelflat->name, flatname, sizeof (levelflat->name));
 	strupr(levelflat->name);
 
-	/* If we can't find a flat, try looking for a texture! */
-	if (( flatnum = R_GetFlatNumForName(levelflat->name) ) == LUMPERROR)
-	{
-		if (( texturenum = R_CheckTextureNumForName(levelflat->name) ) == -1)
-		{
-			// check for REDWALL
-			if (( texturenum = R_CheckTextureNumForName(MISSING_TEXTURE) ) != -1)
-				goto texturefound;
-			// check for REDFLR
-			else if (( flatnum = R_GetFlatNumForName(MISSING_TEXTURE) ) != LUMPERROR)
-				goto flatfound;
-			// nevermind
-			levelflat->type = LEVELFLAT_NONE;
-		}
-		else
-		{
-texturefound:
-			levelflat->type = LEVELFLAT_TEXTURE;
-			levelflat->u.texture.    num = texturenum;
-			levelflat->u.texture.lastnum = texturenum;
-			/* start out unanimated */
-			levelflat->u.texture.basenum = -1;
-		}
-	}
-	else
-	{
-flatfound:
-		/* This could be a flat, patch, or PNG. */
-		flatpatch = W_CacheLumpNum(flatnum, PU_CACHE);
-		lumplength = W_LumpLength(flatnum);
-		if (Picture_CheckIfDoomPatch((softwarepatch_t *)flatpatch, lumplength))
-			levelflat->type = LEVELFLAT_PATCH;
-		else
-		{
-#ifndef NO_PNG_LUMPS
-			/*
-			Only need eight bytes for PNG headers.
-			FIXME: Put this elsewhere.
-			*/
-			W_ReadLumpHeader(flatnum, buffer, 8, 0);
-			if (Picture_IsLumpPNG(buffer, lumplength))
-				levelflat->type = LEVELFLAT_PNG;
-			else
-#endif/*NO_PNG_LUMPS*/
-				levelflat->type = LEVELFLAT_FLAT;/* phew */
-		}
-		if (flatpatch)
-			Z_Free(flatpatch);
+	levelflat->type = LEVELFLAT_TEXTURE;
 
-		levelflat->u.flat.    lumpnum = flatnum;
-		levelflat->u.flat.baselumpnum = LUMPERROR;
+	// Look for a flat
+	int texturenum = R_CheckFlatNumForName(levelflat->name);
+	if (texturenum <= 0)
+	{
+		// If we can't find a flat, try looking for a texture!
+		texturenum = R_CheckTextureNumForName(levelflat->name);
+		if (texturenum <= 0)
+		{
+			// Use "not found" texture
+			texturenum = R_CheckTextureNumForName("REDWALL");
+
+			// Give up?
+			if (texturenum <= 0)
+			{
+				levelflat->type = LEVELFLAT_NONE;
+				texturenum = -1;
+			}
+		}
 	}
 
+	levelflat->texture_id = texturenum;
+
 	levelflat->terrain =
 		K_GetTerrainForTextureName(levelflat->name);
 
+#ifndef ZDEBUG
 	CONS_Debug(DBG_SETUP, "flat #%03d: %s\n", atoi(sizeu1(numlevelflats)), levelflat->name);
+#endif
 
-	return ( numlevelflats++ );
+	return numlevelflats++;
 }
 
 // Auxiliary function. Find a flat in the active wad files,
@@ -3784,9 +3742,6 @@ static boolean P_LoadMapData(const virtres_t *virt)
 	levelflats = M_Memcpy(Z_Calloc(numlevelflats * sizeof (*levelflats), PU_LEVEL, NULL), foundflats, numlevelflats * sizeof (levelflat_t));
 	free(foundflats);
 
-	// search for animated flats and set up
-	P_SetupLevelFlatAnims();
-
 	TracyCZoneEnd(__zone);
 	return true;
 }
diff --git a/src/p_setup.h b/src/p_setup.h
index 3b1f5ae29..c7c438d3d 100644
--- a/src/p_setup.h
+++ b/src/p_setup.h
@@ -54,9 +54,6 @@ extern mapnamespace_t mapnamespace;
 enum
 {
 	LEVELFLAT_NONE,/* HOM time my friend */
-	LEVELFLAT_FLAT,
-	LEVELFLAT_PATCH,
-	LEVELFLAT_PNG,
 	LEVELFLAT_TEXTURE,
 };
 
@@ -66,43 +63,9 @@ enum
 struct levelflat_t
 {
 	char name[9]; // resource name from wad
-
-	UINT8  type;
-	union
-	{
-		struct
-		{
-			lumpnum_t     lumpnum; // lump number of the flat
-			// for flat animation
-			lumpnum_t baselumpnum;
-		}
-		flat;
-		struct
-		{
-			INT32             num;
-			INT32         lastnum; // texture number of the flat
-			// for flat animation
-			INT32         basenum;
-		}
-		texture;
-	}
-	u;
-
-	UINT16 width, height;
-
 	terrain_t *terrain;
-
-	// for flat animation
-	INT32 animseq; // start pos. in the anim sequence
-	INT32 numpics;
-	INT32 speed;
-
-	// for textures
-	UINT8 *picture;
-#ifdef HWRENDER
-	void *mipmap;
-	void *mippic;
-#endif
+	UINT8 type;
+	INT32 texture_id;
 };
 
 extern size_t numlevelflats;
diff --git a/src/p_spec.c b/src/p_spec.c
index 7a9efc6b6..bce69e446 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -217,11 +217,11 @@ void P_InitPicAnims(void)
 		}
 		else
 		{
-			if ((W_CheckNumForName(animdefs[i].startname)) == LUMPERROR)
+			if (R_CheckFlatNumForName(animdefs[i].startname) == -1)
 				continue;
 
-			lastanim->picnum = R_GetFlatNumForName(animdefs[i].endname);
-			lastanim->basepic = R_GetFlatNumForName(animdefs[i].startname);
+			lastanim->picnum = R_CheckFlatNumForName(animdefs[i].endname);
+			lastanim->basepic = R_CheckFlatNumForName(animdefs[i].startname);
 		}
 
 		lastanim->istexture = animdefs[i].istexture;
@@ -449,82 +449,13 @@ void P_ParseAnimationDefintion(SINT8 istexture)
 	animdefs[i].speed = animSpeed;
 	Z_Free(animdefsToken);
 
-#ifdef WALLFLATS
-	// hehe... uhh.....
+	// Add it as a texture too
 	if (!istexture)
 	{
 		GrowAnimDefs();
 		M_Memcpy(&animdefs[maxanims-1], &animdefs[i], sizeof(animdef_t));
 		animdefs[maxanims-1].istexture = 1;
 	}
-#endif
-}
-
-/** Checks for flats in levelflats that are part of a flat animation sequence
-  * and sets them up for animation.
-  *
-  * \param animnum Index into ::anims to find flats for.
-  * \sa P_SetupLevelFlatAnims
-  */
-static inline void P_FindAnimatedFlat(INT32 animnum)
-{
-	size_t i;
-	lumpnum_t startflatnum, endflatnum;
-	levelflat_t *foundflats;
-
-	foundflats = levelflats;
-	startflatnum = anims[animnum].basepic;
-	endflatnum = anims[animnum].picnum;
-
-	// note: high word of lumpnum is the wad number
-	if ((startflatnum>>16) != (endflatnum>>16))
-		I_Error("AnimatedFlat start %s not in same wad as end %s\n",
-			animdefs[animnum].startname, animdefs[animnum].endname);
-
-	//
-	// now search through the levelflats if this anim flat sequence is used
-	//
-	for (i = 0; i < numlevelflats; i++, foundflats++)
-	{
-		// is that levelflat from the flat anim sequence ?
-		if ((anims[animnum].istexture) && (foundflats->type == LEVELFLAT_TEXTURE)
-			&& ((UINT16)foundflats->u.texture.num >= startflatnum && (UINT16)foundflats->u.texture.num <= endflatnum))
-		{
-			foundflats->u.texture.basenum = startflatnum;
-			foundflats->animseq = foundflats->u.texture.num - startflatnum;
-			foundflats->numpics = endflatnum - startflatnum + 1;
-			foundflats->speed = anims[animnum].speed;
-
-			CONS_Debug(DBG_SETUP, "animflat: #%03d name:%.8s animseq:%d numpics:%d speed:%d\n",
-					atoi(sizeu1(i)), foundflats->name, foundflats->animseq,
-					foundflats->numpics,foundflats->speed);
-		}
-		else if ((!anims[animnum].istexture) && (foundflats->type == LEVELFLAT_FLAT)
-			&& (foundflats->u.flat.lumpnum >= startflatnum && foundflats->u.flat.lumpnum <= endflatnum))
-		{
-			foundflats->u.flat.baselumpnum = startflatnum;
-			foundflats->animseq = foundflats->u.flat.lumpnum - startflatnum;
-			foundflats->numpics = endflatnum - startflatnum + 1;
-			foundflats->speed = anims[animnum].speed;
-
-			CONS_Debug(DBG_SETUP, "animflat: #%03d name:%.8s animseq:%d numpics:%d speed:%d\n",
-					atoi(sizeu1(i)), foundflats->name, foundflats->animseq,
-					foundflats->numpics,foundflats->speed);
-		}
-	}
-}
-
-/** Sets up all flats used in a level.
-  *
-  * \sa P_InitPicAnims, P_FindAnimatedFlat
-  */
-void P_SetupLevelFlatAnims(void)
-{
-	INT32 i;
-
-	// the original game flat anim sequences
-	for (i = 0; anims[i].istexture != -1; i++)
-		P_FindAnimatedFlat(i);
 }
 
 //
@@ -6155,13 +6086,6 @@ void P_CheckMobjTouchingSectorActions(mobj_t *mobj, boolean continuous, boolean
   */
 void P_UpdateSpecials(void)
 {
-	anim_t *anim;
-	INT32 i;
-	INT32 pic;
-	size_t j;
-
-	levelflat_t *foundflats; // for flat animation
-
 	// LEVEL TIMER
 	P_CheckTimeLimit();
 
@@ -6169,37 +6093,19 @@ void P_UpdateSpecials(void)
 	P_CheckPointLimit();
 
 	// ANIMATE TEXTURES
-	for (anim = anims; anim < lastanim; anim++)
+	for (anim_t *anim = anims; anim < lastanim; anim++)
 	{
-		for (i = 0; i < anim->numpics; i++)
+		for (INT32 i = 0; i < anim->numpics; i++)
 		{
-			pic = anim->basepic + ((leveltime/anim->speed + i) % anim->numpics);
+			INT32 pic = anim->basepic + ((leveltime/anim->speed + i) % anim->numpics);
 			if (anim->istexture)
 				texturetranslation[anim->basepic+i] = pic;
 		}
 	}
-
-	// ANIMATE FLATS
-	/// \todo do not check the non-animate flat.. link the animated ones?
-	/// \note its faster than the original anywaysince it animates only
-	///    flats used in the level, and there's usually very few of them
-	foundflats = levelflats;
-	for (j = 0; j < numlevelflats; j++, foundflats++)
-	{
-		if (foundflats->speed) // it is an animated flat
-		{
-			// update the levelflat texture number
-			if ((foundflats->type == LEVELFLAT_TEXTURE) && (foundflats->u.texture.basenum != -1))
-				foundflats->u.texture.num = foundflats->u.texture.basenum + ((leveltime/foundflats->speed + foundflats->animseq) % foundflats->numpics);
-			// update the levelflat lump number
-			else if ((foundflats->type == LEVELFLAT_FLAT) && (foundflats->u.flat.baselumpnum != LUMPERROR))
-				foundflats->u.flat.lumpnum = foundflats->u.flat.baselumpnum + ((leveltime/foundflats->speed + foundflats->animseq) % foundflats->numpics);
-		}
-	}
 }
 
 //
-// Floor over floors (FOFs), 3Dfloors, 3Dblocks, fake floors (ffloors), rovers, or whatever you want to call them
+// 3D floors
 //
 
 /** Gets the ID number for a 3Dfloor in its target sector.
diff --git a/src/p_spec.h b/src/p_spec.h
index 9b247ab7f..a3fba69ab 100644
--- a/src/p_spec.h
+++ b/src/p_spec.h
@@ -526,9 +526,6 @@ void P_StartQuake(fixed_t intensity, tic_t time);
 // at game start
 void P_InitPicAnims(void);
 
-// at map load (sectors)
-void P_SetupLevelFlatAnims(void);
-
 // at map load
 void P_InitSpecials(void);
 void P_ApplyFlatAlignment(sector_t* sector, angle_t flatangle, fixed_t xoffs, fixed_t yoffs, boolean floor, boolean ceiling);
diff --git a/src/r_picformats.c b/src/r_picformats.c
index c382bcbc0..db33c33d6 100644
--- a/src/r_picformats.c
+++ b/src/r_picformats.c
@@ -764,7 +764,7 @@ void *Picture_TextureToFlat(size_t trickytex)
 	R_CheckTextureCache(tex);
 
 	// Allocate the flat
-	flatsize = (texture->width * texture->height);
+	flatsize = texture->width * texture->height;
 	converted = Z_Malloc(flatsize, PU_STATIC, NULL);
 	memset(converted, TRANSPARENTPIXEL, flatsize);
 
diff --git a/src/r_plane.cpp b/src/r_plane.cpp
index 87a4fd308..61be014f9 100644
--- a/src/r_plane.cpp
+++ b/src/r_plane.cpp
@@ -1118,39 +1118,32 @@ void R_DrawSinglePlane(drawspandata_t *ds, visplane_t *pl, boolean allow_paralle
 	ds->currentplane = pl;
 	levelflat = &levelflats[pl->picnum];
 
-	/* :james: */
-	type = levelflat->type;
-	switch (type)
-	{
-		case LEVELFLAT_NONE:
-			return;
-		case LEVELFLAT_FLAT:
-			ds->source = (UINT8 *)R_GetFlat(levelflat->u.flat.lumpnum);
-			R_CheckFlatLength(ds, W_LumpLength(levelflat->u.flat.lumpnum));
-			// Raw flats always have dimensions that are powers-of-two numbers.
-			ds->powersoftwo = true;
-			break;
-		default:
-			ds->source = (UINT8 *)R_GetLevelFlat(ds, levelflat);
-			if (!ds->source)
-				return;
-		// Check if this texture or patch has power-of-two dimensions.
-		if (R_CheckPowersOfTwo(ds))
-			R_CheckFlatLength(ds, ds->flatwidth * ds->flatheight);
-	}
+	// Get the texture
+	ds->source = (UINT8 *)R_GetFlat(levelflat);
+	if (ds->source == NULL)
+		return;
 
-	if (type == LEVELFLAT_TEXTURE)
+	texture_t *texture = textures[R_GetTextureNumForFlat(levelflat)];
+	ds->flatwidth = texture->width;
+	ds->flatheight = texture->height;
+
+	/*(if (R_CheckSolidColorFlat())
+		ds->solidcolor = true;
+	else if (R_CheckPowersOfTwo())
 	{
-		// Get the span's brightmap.
-		// FLATS not supported, SORRY!!
-		INT32 bmNum = R_GetTextureBrightmap(levelflat->u.texture.num);
-		if (bmNum != 0)
-		{
-			// FIXME: This has the potential to read out of
-			// bounds if the brightmap texture is not as
-			// large as the flat.
-			ds->brightmap = (UINT8 *)R_GenerateTextureAsFlat(bmNum);
-		}
+		R_SetFlatVars(ds_flatwidth * ds_flatheight);
+		ds->powersoftwo = true;
+	}*/
+
+	// Get the span's brightmap.
+	// FLATS not supported, SORRY!!
+	INT32 bmNum = R_GetTextureBrightmap(levelflat->texture_id);
+	if (bmNum != 0)
+	{
+		// FIXME: This has the potential to read out of
+		// bounds if the brightmap texture is not as
+		// large as the flat.
+		ds->brightmap = (UINT8 *)R_GetFlatForTexture(bmNum);
 	}
 
 	if (!pl->slope // Don't mess with angle on slopes! We'll handle this ourselves later
diff --git a/src/r_textures.c b/src/r_textures.c
index 7232216d9..29f7747da 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -66,6 +66,7 @@ static struct {
 	char name[9];
 	UINT32 hash;
 	INT32 id;
+	UINT8 type;
 } *tidcache = NULL;
 static INT32 tidcachelen = 0;
 
@@ -361,7 +362,8 @@ UINT8 *R_GenerateTexture(size_t texnum)
 	texture = textures[texnum];
 	I_Assert(texture != NULL);
 
-	// allocate texture column offset lookup
+	if (texture->type == TEXTURETYPE_FLAT)
+		goto multipatch;
 
 	// single-patch textures can have holes in them and may be used on
 	// 2sided lines so they need to be kept in 'packed' format
@@ -390,11 +392,8 @@ UINT8 *R_GenerateTexture(size_t texnum)
 		realpatch = (softwarepatch_t *)pdata;
 
 #ifndef NO_PNG_LUMPS
-		if (Picture_IsLumpPNG((UINT8 *)realpatch, lumplength))
-			goto multipatch;
-#endif
-#ifdef WALLFLATS
-		if (texture->type == TEXTURETYPE_FLAT)
+		// TODO: Is it worth converting those?
+		if (Picture_IsLumpPNG(pdata, lumplength))
 			goto multipatch;
 #endif
 
@@ -495,7 +494,6 @@ UINT8 *R_GenerateTexture(size_t texnum)
 			realpatch = (softwarepatch_t *)Picture_PNGConvert((UINT8 *)realpatch, PICFMT_DOOMPATCH, NULL, NULL, NULL, NULL, lumplength, NULL, 0);
 		else
 #endif
-#ifdef WALLFLATS
 		if (texture->type == TEXTURETYPE_FLAT)
 		{
 			if (doremap)
@@ -503,7 +501,6 @@ UINT8 *R_GenerateTexture(size_t texnum)
 			realpatch = (softwarepatch_t *)Picture_Convert(PICFMT_FLAT, pdata, PICFMT_DOOMPATCH, 0, NULL, texture->width, texture->height, 0, 0, 0);
 		}
 		else
-#endif
 		{
 			dealloc = false;
 			if (doremap)
@@ -562,29 +559,38 @@ done:
 	return blocktex;
 }
 
-//
-// R_GenerateTextureAsFlat
-//
-// Generates a flat picture for a texture.
-//
-UINT8 *R_GenerateTextureAsFlat(size_t texnum)
+UINT8 *R_GetFlatForTexture(size_t texnum)
 {
 	texture_t *texture = textures[texnum];
-	UINT8 *converted = NULL;
-	size_t size = (texture->width * texture->height);
 
-	// The flat picture for this texture was not generated yet.
-	if (!texture->flat)
+	if (texture->flat != NULL)
+		return texture->flat;
+
+	if (texture->type == TEXTURETYPE_FLAT)
 	{
-		// Well, let's do it now, then.
-		Z_Malloc(size, PU_LEVEL, &texture->flat);
+		texpatch_t *patch = &texture->patches[0];
+		UINT16 wadnum = patch->wad;
+		lumpnum_t lumpnum = patch->lump;
+		UINT8 *pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
 
-		// Picture_TextureToFlat handles everything for us.
-		converted = (UINT8 *)Picture_TextureToFlat(texnum);
-		M_Memcpy(texture->flat, converted, size);
-		Z_Free(converted);
+#ifndef NO_PNG_LUMPS
+		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
+		if (Picture_IsLumpPNG(pdata, lumplength))
+		{
+			texture->flat = Picture_PNGConvert(pdata, PICFMT_FLAT, NULL, NULL, NULL, NULL, lumplength, NULL, 0);
+			Z_Free(pdata);
+		}
+		else
+#endif
+			texture->flat = pdata;
+
+		return texture->flat;
 	}
 
+	texture->flat = (UINT8 *)Picture_TextureToFlat(texnum);
+
+	flatmemory += texture->width + texture->height;
+
 	return texture->flat;
 }
 
@@ -935,96 +941,26 @@ UINT8 *R_GetBrightmapColumn(fixed_t tex, INT32 col)
 	return texturebrightmapcache[tex] + LONG(texturecolumnofs[tex][wrap_column(tex, col)]);
 }
 
-void *R_GetFlat(lumpnum_t flatlumpnum)
+INT32 R_GetTextureNumForFlat(levelflat_t *levelflat)
 {
-	// FIXME: checking this every time a flat is fetched for drawing is stupid...
-	// sadly they are not cached anywhere else so i have no choice
-	boolean doremap = W_NeedPaletteRemap(flatlumpnum, false);
-	void *flat = W_CacheLumpNum(flatlumpnum, PU_LEVEL);
-	if (doremap)
-		R_DoPaletteRemapFlat(flat, W_LumpLength(flatlumpnum));
-	return flat;
+	return texturetranslation[levelflat->texture_id];
 }
 
-//
-// R_GetLevelFlat
-//
-// If needed, convert a texture or patch to a flat.
-//
-void *R_GetLevelFlat(drawspandata_t* ds, levelflat_t *levelflat)
+void *R_GetFlat(levelflat_t *levelflat)
 {
-	boolean isleveltexture = (levelflat->type == LEVELFLAT_TEXTURE);
-	texture_t *texture = (isleveltexture ? textures[levelflat->u.texture.num] : NULL);
-	boolean texturechanged = (isleveltexture ? (levelflat->u.texture.num != levelflat->u.texture.lastnum) : false);
-	UINT8 *flatdata = NULL;
+	if (levelflat->type == LEVELFLAT_NONE)
+		return NULL;
 
-	// Check if the texture changed.
-	if (isleveltexture && (!texturechanged))
-	{
-		if (texture->flat)
-		{
-			flatdata = texture->flat;
-			ds->flatwidth = texture->width;
-			ds->flatheight = texture->height;
-			texturechanged = false;
-		}
-		else
-			texturechanged = true;
-	}
+	// FIXME: checking this every time a flat is fetched for drawing is stupid...
+	// sadly they are not cached anywhere else so i have no choice
+	/*boolean doremap = W_NeedPaletteRemap(flatlumpnum, false);
+	void *flat = W_CacheLumpNum(flatlumpnum, PU_LEVEL);
+	if (doremap)
+		R_DoPaletteRemapFlat(flat, W_LumpLength(levelflat->texture_id));
+	return flat;*/
 
-	// If the texture changed, or the flat wasn't generated, convert.
-	if (levelflat->picture == NULL || texturechanged)
-	{
-		// Level texture
-		if (isleveltexture)
-		{
-			levelflat->picture = R_GenerateTextureAsFlat(levelflat->u.texture.num);
-			ds->flatwidth = levelflat->width = texture->width;
-			ds->flatheight = levelflat->height = texture->height;
-		}
-		else
-		{
-#ifndef NO_PNG_LUMPS
-			if (levelflat->type == LEVELFLAT_PNG)
-			{
-				INT32 pngwidth, pngheight;
-
-				levelflat->picture = Picture_PNGConvert(W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_LEVEL), PICFMT_FLAT, &pngwidth, &pngheight, NULL, NULL, W_LumpLength(levelflat->u.flat.lumpnum), NULL, 0);
-				levelflat->width = (UINT16)pngwidth;
-				levelflat->height = (UINT16)pngheight;
-
-				ds->flatwidth = levelflat->width;
-				ds->flatheight = levelflat->height;
-			}
-			else
-#endif
-			if (levelflat->type == LEVELFLAT_PATCH)
-			{
-				UINT8 *converted;
-				size_t size;
-				softwarepatch_t *patch = W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_LEVEL);
-
-				levelflat->width = ds->flatwidth = SHORT(patch->width);
-				levelflat->height = ds->flatheight = SHORT(patch->height);
-
-				levelflat->picture = Z_Malloc(levelflat->width * levelflat->height, PU_LEVEL, NULL);
-				converted = Picture_FlatConvert(PICFMT_DOOMPATCH, patch, PICFMT_FLAT, 0, &size, levelflat->width, levelflat->height, SHORT(patch->topoffset), SHORT(patch->leftoffset), 0);
-				M_Memcpy(levelflat->picture, converted, size);
-				Z_Free(converted);
-			}
-		}
-	}
-	else
-	{
-		ds->flatwidth = levelflat->width;
-		ds->flatheight = levelflat->height;
-	}
-
-	levelflat->u.texture.lastnum = levelflat->u.texture.num;
-
-	if (flatdata == NULL)
-		flatdata = levelflat->picture;
-	return flatdata;
+	// FIXME: How do I convert above for new format.
+	return R_GetFlatForTexture(R_GetTextureNumForFlat(levelflat));
 }
 
 //
@@ -1178,7 +1114,6 @@ void R_FlushTextureCache(void)
 int R_CountTexturesInTEXTURESLump(UINT16 wadNum, UINT16 lumpNum);
 void R_ParseTEXTURESLump(UINT16 wadNum, UINT16 lumpNum, INT32 *index);
 
-#ifdef WALLFLATS
 static INT32
 Rloadflats (INT32 i, INT32 w)
 {
@@ -1188,7 +1123,6 @@ Rloadflats (INT32 i, INT32 w)
 	texpatch_t *patch;
 	UINT8 header[PNG_HEADER_SIZE];
 
-	// Yes
 	if (wadfiles[w]->type == RET_PK3)
 	{
 		texstart = W_CheckNumForFolderStartPK3("flats/", (UINT16)w, 0);
@@ -1207,8 +1141,6 @@ Rloadflats (INT32 i, INT32 w)
 		{
 			UINT16 wadnum = (UINT16)w;
 			lumpnum_t lumpnum = texstart + j;
-			size_t lumplength;
-			size_t flatsize = 0;
 
 			if (wadfiles[w]->type == RET_PK3)
 			{
@@ -1216,10 +1148,8 @@ Rloadflats (INT32 i, INT32 w)
 					continue; // If it is then SKIP IT
 			}
 
-			W_ReadLumpHeaderPwad(wadnum, lumpnum, header, sizeof header, 0);
-			lumplength = W_LumpLengthPwad(wadnum, lumpnum);
-
-			flatsize = R_FlatDimensionsFromLumpSize(lumplength);
+			size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
+			size_t flatsize = R_FlatDimensionsFromLumpSize(lumplength);
 
 			//CONS_Printf("\n\"%s\" is a flat, dimensions %d x %d",W_CheckNameForNumPwad((UINT16)w,texstart+j),flatsize,flatsize);
 			texture = textures[i] = Z_Calloc(sizeof(texture_t) + sizeof(texpatch_t), PU_STATIC, NULL);
@@ -1229,6 +1159,8 @@ Rloadflats (INT32 i, INT32 w)
 			texture->hash = quickncasehash(texture->name, 8);
 
 #ifndef NO_PNG_LUMPS
+			W_ReadLumpHeaderPwad(wadnum, lumpnum, header, sizeof header, 0);
+
 			if (Picture_IsLumpPNG(header, lumplength))
 			{
 				UINT8 *flatlump = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
@@ -1264,7 +1196,6 @@ Rloadflats (INT32 i, INT32 w)
 
 	return i;
 }
-#endif/*WALLFLATS*/
 
 #define TX_START "TX_START"
 #define TX_END "TX_END"
@@ -1424,9 +1355,7 @@ static INT32 R_CountTextures(UINT16 wadnum)
 	// This system will allocate memory for all duplicate/patched textures even if it never uses them,
 	// but the alternative is to spend a ton of time checking and re-checking all previous entries just to skip any potentially patched textures.
 
-#ifdef WALLFLATS
 	count += count_range("F_START", "F_END", "flats/", wadnum);
-#endif
 
 	// Count the textures from TEXTURES lumps
 	texturesLumpPos = W_CheckNumForNamePwad("TEXTURES", wadnum, 0);
@@ -1508,9 +1437,7 @@ void R_UpdateTextureBrightmap(INT32 tx, INT32 bm)
 
 static INT32 R_DefineTextures(INT32 i, UINT16 w)
 {
-#ifdef WALLFLATS
 	i = Rloadflats(i, w);
-#endif
 	return Rloadtextures(i, w);
 }
 
@@ -2044,56 +1971,6 @@ static void PaletteTextureHack(const char **name)
 	}
 }
 
-// Search for flat name.
-lumpnum_t R_GetFlatNumForName(const char *name)
-{
-	INT32 i;
-	lumpnum_t lump;
-	lumpnum_t start;
-	lumpnum_t end;
-
-	PaletteTextureHack(&name);
-
-	// Scan wad files backwards so patched flats take preference.
-	for (i = numwadfiles - 1; i >= 0; i--)
-	{
-		switch (wadfiles[i]->type)
-		{
-		case RET_WAD:
-			if ((start = W_CheckNumForMarkerStartPwad("F_START", (UINT16)i, 0)) == INT16_MAX)
-			{
-				if ((start = W_CheckNumForMarkerStartPwad("FF_START", (UINT16)i, 0)) == INT16_MAX)
-					continue;
-				else if ((end = W_CheckNumForNamePwad("FF_END", (UINT16)i, start)) == INT16_MAX)
-					continue;
-			}
-			else
-				if ((end = W_CheckNumForNamePwad("F_END", (UINT16)i, start)) == INT16_MAX)
-					continue;
-			break;
-		case RET_PK3:
-			if ((start = W_CheckNumForFolderStartPK3("Flats/", i, 0)) == INT16_MAX)
-				continue;
-			if ((end = W_CheckNumForFolderEndPK3("Flats/", i, start)) == INT16_MAX)
-				continue;
-			break;
-		default:
-			continue;
-		}
-
-		// Now find lump with specified name in that range.
-		lump = W_CheckNumForNamePwad(name, (UINT16)i, start);
-		if (lump < end)
-		{
-			lump += (i<<16); // found it, in our constraints
-			break;
-		}
-		lump = LUMPERROR;
-	}
-
-	return lump;
-}
-
 void R_ClearTextureNumCache(boolean btell)
 {
 	if (tidcache)
@@ -2104,6 +1981,20 @@ void R_ClearTextureNumCache(boolean btell)
 	tidcachelen = 0;
 }
 
+static void AddTextureToCache(const char *name, UINT32 hash, INT32 id, UINT8 type)
+{
+	tidcachelen++;
+	Z_Realloc(tidcache, tidcachelen * sizeof(*tidcache), PU_STATIC, &tidcache);
+	strncpy(tidcache[tidcachelen-1].name, name, 8);
+	tidcache[tidcachelen-1].name[8] = '\0';
+#ifndef ZDEBUG
+	CONS_Debug(DBG_SETUP, "texture #%s: %s\n", sizeu1(tidcachelen), tidcache[tidcachelen-1].name);
+#endif
+	tidcache[tidcachelen-1].hash = hash;
+	tidcache[tidcachelen-1].id = id;
+	tidcache[tidcachelen-1].type = type;
+}
+
 //
 // R_CheckTextureNumForName
 //
@@ -2126,18 +2017,10 @@ INT32 R_CheckTextureNumForName(const char *name)
 		if (tidcache[i].hash == hash && !strncasecmp(tidcache[i].name, name, 8))
 			return tidcache[i].id;
 
-	// Need to parse the list backwards, so textures loaded more recently are used in lieu of ones loaded earlier
-	//for (i = 0; i < numtextures; i++) <- old
-	for (i = (numtextures - 1); i >= 0; i--) // <- new
+	for (i = numtextures - 1; i >= 0; i--)
 		if (textures[i]->hash == hash && !strncasecmp(textures[i]->name, name, 8))
 		{
-			tidcachelen++;
-			Z_Realloc(tidcache, tidcachelen * sizeof(*tidcache), PU_STATIC, &tidcache);
-			strncpy(tidcache[tidcachelen-1].name, name, 8);
-			tidcache[tidcachelen-1].name[8] = '\0';
-			CONS_Debug(DBG_SETUP, "texture #%s: %s\n", sizeu1(tidcachelen), tidcache[tidcachelen-1].name);
-			tidcache[tidcachelen-1].hash = hash;
-			tidcache[tidcachelen-1].id = i;
+			AddTextureToCache(name, hash, i, textures[i]->type);
 			return i;
 		}
 
@@ -2170,3 +2053,28 @@ INT32 R_TextureNumForName(const char *name)
 	}
 	return i;
 }
+
+INT32 R_CheckFlatNumForName(const char *name)
+{
+	INT32 i;
+	UINT32 hash;
+
+	// "NoTexture" marker.
+	if (name[0] == '-')
+		return 0;
+
+	hash = quickncasehash(name, 8);
+
+	for (i = 0; i < tidcachelen; i++)
+		if (tidcache[i].type == TEXTURETYPE_FLAT && tidcache[i].hash == hash && !strncasecmp(tidcache[i].name, name, 8))
+			return tidcache[i].id;
+
+	for (i = numtextures - 1; i >= 0; i--)
+		if (textures[i]->hash == hash && !strncasecmp(textures[i]->name, name, 8) && textures[i]->type == TEXTURETYPE_FLAT)
+		{
+			AddTextureToCache(name, hash, i, TEXTURETYPE_FLAT);
+			return i;
+		}
+
+	return -1;
+}
diff --git a/src/r_textures.h b/src/r_textures.h
index 44f1b3d61..650cb523c 100644
--- a/src/r_textures.h
+++ b/src/r_textures.h
@@ -44,9 +44,7 @@ enum
 	TEXTURETYPE_UNKNOWN,
 	TEXTURETYPE_SINGLEPATCH,
 	TEXTURETYPE_COMPOSITE,
-#ifdef WALLFLATS
 	TEXTURETYPE_FLAT,
-#endif
 };
 
 // A texture_t describes a rectangular texture,
@@ -86,7 +84,7 @@ void R_FlushTextureCache(void);
 
 // Texture generation
 UINT8 *R_GenerateTexture(size_t texnum);
-UINT8 *R_GenerateTextureAsFlat(size_t texnum);
+UINT8 *R_GetFlatForTexture(size_t texnum);
 UINT8 *R_GenerateTextureBrightmap(size_t texnum);
 INT32 R_GetTextureNum(INT32 texnum);
 INT32 R_GetTextureBrightmap(INT32 texnum);
@@ -98,10 +96,11 @@ void R_DoPaletteRemapPatch(softwarepatch_t *patch, size_t size);
 void R_DoPaletteRemapFlat(UINT8 *data, size_t size);
 
 // Retrieve texture data.
-void *R_GetLevelFlat(drawspandata_t* ds, levelflat_t *levelflat);
 UINT8 *R_GetColumn(fixed_t tex, INT32 col);
 UINT8 *R_GetBrightmapColumn(fixed_t tex, INT32 col);
-void *R_GetFlat(lumpnum_t flatnum);
+void *R_GetFlat(levelflat_t *levelflat);
+
+INT32 R_GetTextureNumForFlat(levelflat_t *levelflat);
 
 boolean R_CheckPowersOfTwo(drawspandata_t* ds);
 void R_CheckFlatLength(drawspandata_t* ds, size_t size);
@@ -111,7 +110,7 @@ void R_UpdateTextureBrightmap(INT32 tx, INT32 bm);
 // Returns the texture number for the texture name.
 INT32 R_TextureNumForName(const char *name);
 INT32 R_CheckTextureNumForName(const char *name);
-lumpnum_t R_GetFlatNumForName(const char *name);
+INT32 R_CheckFlatNumForName(const char *name);
 
 extern INT32 numtextures;
 

From 6874f7ca70f6e351403f0a4d33e22232f9f452e5 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sun, 25 May 2025 00:48:25 -0400
Subject: [PATCH 02/11] Fix brightmap overlays being drawn instead of regular
 texture:

---
 src/hardware/hw_cache.c | 2 ++
 src/r_plane.cpp         | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 7da9716c8..15c726a7c 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -1001,6 +1001,8 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 			memcpy(Z_Malloc(size, PU_HWRCACHE, &grMipmap->data), R_GetFlatForTexture(brightmapnum), size);
 		}
 
+		grtex->mipmap.flags |= TF_BRIGHTMAP;
+
 		if (!grMipmap->downloaded)
 			HWD.pfnSetTexture(&grtex->mipmap);
 
diff --git a/src/r_plane.cpp b/src/r_plane.cpp
index 61be014f9..cc9088256 100644
--- a/src/r_plane.cpp
+++ b/src/r_plane.cpp
@@ -1136,7 +1136,6 @@ void R_DrawSinglePlane(drawspandata_t *ds, visplane_t *pl, boolean allow_paralle
 	}*/
 
 	// Get the span's brightmap.
-	// FLATS not supported, SORRY!!
 	INT32 bmNum = R_GetTextureBrightmap(levelflat->texture_id);
 	if (bmNum != 0)
 	{

From c83d5cebd4ff4672f7f4f5d8883b9c1982764bd6 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sun, 25 May 2025 02:01:33 -0400
Subject: [PATCH 03/11] AAAAAA

I'll be honest what am I doing???
---
 src/hardware/hw_cache.c | 7 +++++++
 src/p_setup.c           | 6 ++++--
 src/p_setup.h           | 1 +
 src/r_textures.c        | 9 +++++----
 4 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 15c726a7c..2d65d6511 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -991,6 +991,13 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 
 		if (!grMipmap->data && !grMipmap->downloaded)
 		{
+			UINT8 *colormap = colormaps;
+
+			if (!noencoremap && encoremap)
+			{
+				colormap += COLORMAP_REMAPOFFSET;
+			}
+
 			grMipmap->format = GL_TEXFMT_P_8;
 			grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
 
diff --git a/src/p_setup.c b/src/p_setup.c
index 43c239f08..4777a78d5 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -532,7 +532,6 @@ levelflat_t *foundflats;
 //SoM: Other files want this info.
 size_t P_PrecacheLevelFlats(void)
 {
-	lumpnum_t lump;
 	size_t i;
 
 	//SoM: 4/18/2000: New flat code to make use of levelflats.
@@ -581,6 +580,7 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 
 	// Look for a flat
 	int texturenum = R_CheckFlatNumForName(levelflat->name);
+	lumpnum_t texturelump = W_CheckNumForName(levelflat->name);
 	if (texturenum <= 0)
 	{
 		// If we can't find a flat, try looking for a texture!
@@ -588,7 +588,8 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 		if (texturenum <= 0)
 		{
 			// Use "not found" texture
-			texturenum = R_CheckTextureNumForName("REDWALL");
+			texturenum = R_CheckTextureNumForName(MISSING_TEXTURE);
+			texturelump = W_CheckNumForName(MISSING_TEXTURE);
 
 			// Give up?
 			if (texturenum <= 0)
@@ -600,6 +601,7 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 	}
 
 	levelflat->texture_id = texturenum;
+	levelflat->lump = texturelump;
 
 	levelflat->terrain =
 		K_GetTerrainForTextureName(levelflat->name);
diff --git a/src/p_setup.h b/src/p_setup.h
index c7c438d3d..b1cea67db 100644
--- a/src/p_setup.h
+++ b/src/p_setup.h
@@ -66,6 +66,7 @@ struct levelflat_t
 	terrain_t *terrain;
 	UINT8 type;
 	INT32 texture_id;
+	lumpnum_t lump;
 };
 
 extern size_t numlevelflats;
diff --git a/src/r_textures.c b/src/r_textures.c
index 29f7747da..3e99f4026 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -953,14 +953,15 @@ void *R_GetFlat(levelflat_t *levelflat)
 
 	// FIXME: checking this every time a flat is fetched for drawing is stupid...
 	// sadly they are not cached anywhere else so i have no choice
-	/*boolean doremap = W_NeedPaletteRemap(flatlumpnum, false);
+	lumpnum_t flatlumpnum = levelflat->lump;
+	boolean doremap = W_NeedPaletteRemap(flatlumpnum, false);
 	void *flat = W_CacheLumpNum(flatlumpnum, PU_LEVEL);
 	if (doremap)
-		R_DoPaletteRemapFlat(flat, W_LumpLength(levelflat->texture_id));
-	return flat;*/
+		R_DoPaletteRemapFlat(flat, W_LumpLength(flatlumpnum));
+	return flat;
 
 	// FIXME: How do I convert above for new format.
-	return R_GetFlatForTexture(R_GetTextureNumForFlat(levelflat));
+	//return R_GetFlatForTexture(R_GetTextureNumForFlat(levelflat));
 }
 
 //

From b429a3e74cdf02f792f51cfe8f4a2249253a1264 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sun, 25 May 2025 10:57:20 -0400
Subject: [PATCH 04/11] Repair removeflats commit to make it function correctly
 with colormapping

---
 src/hardware/hw_cache.c | 17 +++++++++--------
 src/r_textures.c        | 17 ++++++-----------
 2 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 2d65d6511..25a950908 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -953,7 +953,9 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 
 	if (!grMipmap->data && !grMipmap->downloaded)
 	{
+		UINT8 *flat;
 		UINT8 *colormap = colormaps;
+		UINT8 *converted;
 
 		if (!noencoremap && encoremap)
 		{
@@ -967,7 +969,13 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 		grMipmap->height = (UINT16)textures[texturenum]->height;
 
 		size_t size = grMipmap->width * grMipmap->height;
-		memcpy(Z_Malloc(size, PU_HWRCACHE, &grMipmap->data), R_GetFlatForTexture(texturenum), size);
+		flat = Z_Malloc(size, PU_HWRCACHE, &grMipmap->data);
+		converted = (UINT8 *)Picture_TextureToFlat(texturenum);
+		for (size_t i = 0; i < size; i++)
+		{
+			flat[i] = colormap[converted[i]];
+		}
+		Z_Free(converted);
 
 		if (!noencoremap && encoremap)
 		{
@@ -991,13 +999,6 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 
 		if (!grMipmap->data && !grMipmap->downloaded)
 		{
-			UINT8 *colormap = colormaps;
-
-			if (!noencoremap && encoremap)
-			{
-				colormap += COLORMAP_REMAPOFFSET;
-			}
-
 			grMipmap->format = GL_TEXFMT_P_8;
 			grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
 
diff --git a/src/r_textures.c b/src/r_textures.c
index 3e99f4026..28e60090e 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -571,7 +571,12 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 		texpatch_t *patch = &texture->patches[0];
 		UINT16 wadnum = patch->wad;
 		lumpnum_t lumpnum = patch->lump;
+		boolean doremap = W_NeedPaletteRemapPwad(wadnum, lumpnum, false);
 		UINT8 *pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
+		if (doremap)
+		{
+			R_DoPaletteRemapFlat(pdata, W_LumpLengthPwad(wadnum, lumpnum));
+		}
 
 #ifndef NO_PNG_LUMPS
 		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
@@ -951,17 +956,7 @@ void *R_GetFlat(levelflat_t *levelflat)
 	if (levelflat->type == LEVELFLAT_NONE)
 		return NULL;
 
-	// FIXME: checking this every time a flat is fetched for drawing is stupid...
-	// sadly they are not cached anywhere else so i have no choice
-	lumpnum_t flatlumpnum = levelflat->lump;
-	boolean doremap = W_NeedPaletteRemap(flatlumpnum, false);
-	void *flat = W_CacheLumpNum(flatlumpnum, PU_LEVEL);
-	if (doremap)
-		R_DoPaletteRemapFlat(flat, W_LumpLength(flatlumpnum));
-	return flat;
-
-	// FIXME: How do I convert above for new format.
-	//return R_GetFlatForTexture(R_GetTextureNumForFlat(levelflat));
+	return R_GetFlatForTexture(R_GetTextureNumForFlat(levelflat));
 }
 
 //

From 41a62d7823a80318a20083674b60ea4ed06c6e70 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sun, 25 May 2025 11:30:07 -0400
Subject: [PATCH 05/11] Do palette hack for flats as well

---
 src/r_textures.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/r_textures.c b/src/r_textures.c
index 28e60090e..c9366688e 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -2059,6 +2059,8 @@ INT32 R_CheckFlatNumForName(const char *name)
 	if (name[0] == '-')
 		return 0;
 
+	PaletteTextureHack(&name);
+
 	hash = quickncasehash(name, 8);
 
 	for (i = 0; i < tidcachelen; i++)

From fbea771486e928dea2056ce9eef929cf0783981a Mon Sep 17 00:00:00 2001
From: Lactozilla <jp6781615@gmail.com>
Date: Mon, 15 Jan 2024 02:47:03 -0300
Subject: [PATCH 06/11] Cleanup R_GetFlatForTexture

---
 src/r_textures.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/r_textures.c b/src/r_textures.c
index c9366688e..c1f1f7b9d 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -561,11 +561,14 @@ done:
 
 UINT8 *R_GetFlatForTexture(size_t texnum)
 {
-	texture_t *texture = textures[texnum];
+	if (texnum >= (unsigned)numtextures)
+		return NULL;
 
+	texture_t *texture = textures[texnum];
 	if (texture->flat != NULL)
 		return texture->flat;
 
+	// Special case: Textures that are flats don't need to be converted FROM a texture INTO a flat.
 	if (texture->type == TEXTURETYPE_FLAT)
 	{
 		texpatch_t *patch = &texture->patches[0];
@@ -588,13 +591,11 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 		else
 #endif
 			texture->flat = pdata;
-
-		return texture->flat;
 	}
+	else
+		texture->flat = (UINT8 *)Picture_TextureToFlat(texnum);
 
-	texture->flat = (UINT8 *)Picture_TextureToFlat(texnum);
-
-	flatmemory += texture->width + texture->height;
+	flatmemory += texture->width * texture->height;
 
 	return texture->flat;
 }

From fc03c880fbaf285e6243188dcf5679f656d3e083 Mon Sep 17 00:00:00 2001
From: GenericHeroGuy <genericheroguy@noreply.codeberg.org>
Date: Sun, 25 May 2025 18:07:25 +0200
Subject: [PATCH 07/11] Fix flat corruption (from lacto's feffdb37)

---
 src/r_textures.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/r_textures.c b/src/r_textures.c
index c1f1f7b9d..eb7abc5d9 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -576,21 +576,25 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 		lumpnum_t lumpnum = patch->lump;
 		boolean doremap = W_NeedPaletteRemapPwad(wadnum, lumpnum, false);
 		UINT8 *pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
+		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
 		if (doremap)
 		{
 			R_DoPaletteRemapFlat(pdata, W_LumpLengthPwad(wadnum, lumpnum));
 		}
 
 #ifndef NO_PNG_LUMPS
-		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
 		if (Picture_IsLumpPNG(pdata, lumplength))
-		{
 			texture->flat = Picture_PNGConvert(pdata, PICFMT_FLAT, NULL, NULL, NULL, NULL, lumplength, NULL, 0);
-			Z_Free(pdata);
-		}
 		else
 #endif
-			texture->flat = pdata;
+		{
+			texture->flat = Z_Malloc(lumplength, PU_STATIC, NULL);
+			memcpy(texture->flat, pdata, lumplength);
+		}
+
+		Z_SetUser(texture->flat, &texture->flat);
+
+		Z_Free(pdata);
 	}
 	else
 		texture->flat = (UINT8 *)Picture_TextureToFlat(texnum);
@@ -1104,7 +1108,10 @@ void R_FlushTextureCache(void)
 
 	if (numtextures)
 		for (i = 0; i < numtextures; i++)
+		{
+			Z_Free(textures[i]->flat);
 			Z_Free(texturecache[i]);
+		}
 }
 
 // Need these prototypes for later; defining them here instead of r_textures.h so they're "private"

From 2642e8d9727637633139e6346dafc2bb4c640fbf Mon Sep 17 00:00:00 2001
From: GenericHeroGuy <genericheroguy@noreply.codeberg.org>
Date: Sun, 25 May 2025 18:18:21 +0200
Subject: [PATCH 08/11] Get flat palremap working again

---
 src/p_setup.c    | 3 ---
 src/p_setup.h    | 1 -
 src/r_textures.c | 8 +++-----
 3 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/src/p_setup.c b/src/p_setup.c
index 4777a78d5..234f8460d 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -580,7 +580,6 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 
 	// Look for a flat
 	int texturenum = R_CheckFlatNumForName(levelflat->name);
-	lumpnum_t texturelump = W_CheckNumForName(levelflat->name);
 	if (texturenum <= 0)
 	{
 		// If we can't find a flat, try looking for a texture!
@@ -589,7 +588,6 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 		{
 			// Use "not found" texture
 			texturenum = R_CheckTextureNumForName(MISSING_TEXTURE);
-			texturelump = W_CheckNumForName(MISSING_TEXTURE);
 
 			// Give up?
 			if (texturenum <= 0)
@@ -601,7 +599,6 @@ Ploadflat (levelflat_t *levelflat, const char *flatname, boolean resize)
 	}
 
 	levelflat->texture_id = texturenum;
-	levelflat->lump = texturelump;
 
 	levelflat->terrain =
 		K_GetTerrainForTextureName(levelflat->name);
diff --git a/src/p_setup.h b/src/p_setup.h
index b1cea67db..c7c438d3d 100644
--- a/src/p_setup.h
+++ b/src/p_setup.h
@@ -66,7 +66,6 @@ struct levelflat_t
 	terrain_t *terrain;
 	UINT8 type;
 	INT32 texture_id;
-	lumpnum_t lump;
 };
 
 extern size_t numlevelflats;
diff --git a/src/r_textures.c b/src/r_textures.c
index eb7abc5d9..26ae8650d 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -574,13 +574,8 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 		texpatch_t *patch = &texture->patches[0];
 		UINT16 wadnum = patch->wad;
 		lumpnum_t lumpnum = patch->lump;
-		boolean doremap = W_NeedPaletteRemapPwad(wadnum, lumpnum, false);
 		UINT8 *pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
 		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
-		if (doremap)
-		{
-			R_DoPaletteRemapFlat(pdata, W_LumpLengthPwad(wadnum, lumpnum));
-		}
 
 #ifndef NO_PNG_LUMPS
 		if (Picture_IsLumpPNG(pdata, lumplength))
@@ -592,6 +587,9 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 			memcpy(texture->flat, pdata, lumplength);
 		}
 
+		if (W_NeedPaletteRemapPwad(wadnum, lumpnum, true))
+			R_DoPaletteRemapFlat(texture->flat, lumplength);
+
 		Z_SetUser(texture->flat, &texture->flat);
 
 		Z_Free(pdata);

From 647bc08b3f832ee4c873b33bda8eb79ad06df7fe Mon Sep 17 00:00:00 2001
From: GenericHeroGuy <genericheroguy@noreply.codeberg.org>
Date: Sun, 25 May 2025 19:36:37 +0200
Subject: [PATCH 09/11] Fix chromakey in encore mode (+ cleanup)

---
 src/hardware/hw_cache.c | 30 ++++++++++++------------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 25a950908..54676f2f4 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -955,12 +955,6 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 	{
 		UINT8 *flat;
 		UINT8 *colormap = colormaps;
-		UINT8 *converted;
-
-		if (!noencoremap && encoremap)
-		{
-			colormap += COLORMAP_REMAPOFFSET;
-		}
 
 		grMipmap->format = GL_TEXFMT_P_8;
 		grMipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
@@ -969,20 +963,20 @@ void HWR_GetLevelFlat(levelflat_t *levelflat, boolean noencoremap)
 		grMipmap->height = (UINT16)textures[texturenum]->height;
 
 		size_t size = grMipmap->width * grMipmap->height;
-		flat = Z_Malloc(size, PU_HWRCACHE, &grMipmap->data);
-		converted = (UINT8 *)Picture_TextureToFlat(texturenum);
-		for (size_t i = 0; i < size; i++)
-		{
-			flat[i] = colormap[converted[i]];
-		}
-		Z_Free(converted);
+		flat = Picture_TextureToFlat(texturenum);
+		Z_ChangeTag(flat, PU_HWRCACHE);
+		Z_SetUser(flat, &grMipmap->data);
 
 		if (!noencoremap && encoremap)
-		{
-			grtex->mipmap.colormap = Z_Calloc(sizeof(*grtex->mipmap.colormap), PU_HWRPATCHCOLMIPMAP, NULL);
-			grtex->mipmap.colormap->source = colormaps + COLORMAP_REMAPOFFSET;
-			M_Memcpy(grtex->mipmap.colormap->data, colormaps + COLORMAP_REMAPOFFSET, 256);
-		}
+			colormap += COLORMAP_REMAPOFFSET;
+
+		grtex->mipmap.colormap = Z_Calloc(sizeof(*grtex->mipmap.colormap), PU_HWRPATCHCOLMIPMAP, NULL);
+		grtex->mipmap.colormap->source = colormap;
+		M_Memcpy(grtex->mipmap.colormap->data, colormap, 256);
+
+		for (size_t steppy = 0; steppy < size; steppy++)
+			if (flat[steppy] != HWR_PATCHES_CHROMAKEY_COLORINDEX)
+				flat[steppy] = grtex->mipmap.colormap->source[flat[steppy]];
 	}
 
 	if (!grMipmap->downloaded)

From f96c9e90952da97da8994f076d8ea755d480f1d0 Mon Sep 17 00:00:00 2001
From: GenericHeroGuy <genericheroguy@noreply.codeberg.org>
Date: Sun, 25 May 2025 19:51:06 +0200
Subject: [PATCH 10/11] Forgot why this is necessary

---
 src/r_textures.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/r_textures.c b/src/r_textures.c
index 26ae8650d..1a191828f 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -574,6 +574,7 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 		texpatch_t *patch = &texture->patches[0];
 		UINT16 wadnum = patch->wad;
 		lumpnum_t lumpnum = patch->lump;
+		boolean doremap = W_NeedPaletteRemapPwad(wadnum, lumpnum, false);
 		UINT8 *pdata = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
 		size_t lumplength = W_LumpLengthPwad(wadnum, lumpnum);
 
@@ -587,7 +588,7 @@ UINT8 *R_GetFlatForTexture(size_t texnum)
 			memcpy(texture->flat, pdata, lumplength);
 		}
 
-		if (W_NeedPaletteRemapPwad(wadnum, lumpnum, true))
+		if (doremap)
 			R_DoPaletteRemapFlat(texture->flat, lumplength);
 
 		Z_SetUser(texture->flat, &texture->flat);

From 8cfa0fa74ff3891c2c495f20007fe869d05cfb47 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Sun, 25 May 2025 14:00:41 -0400
Subject: [PATCH 11/11] Remove leftover flat animdef code

---
 src/p_spec.c     | 85 ++++++++++++++++++++++++------------------------
 src/r_textures.c |  1 +
 2 files changed, 43 insertions(+), 43 deletions(-)

diff --git a/src/p_spec.c b/src/p_spec.c
index bce69e446..06cda1111 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -66,17 +66,12 @@ mobj_t *skyboxcenterpnts[16]; // array of MT_SKYBOX centerpoint mobjs
   */
 typedef struct
 {
-	SINT8 istexture; ///< ::true for a texture, ::false for a flat
 	INT32 picnum;    ///< The end flat number
 	INT32 basepic;   ///< The start flat number
 	INT32 numpics;   ///< Number of frames in the animation
 	tic_t speed;     ///< Number of tics for which each frame is shown
 } anim_t;
 
-#if defined(_MSC_VER)
-#pragma pack(1)
-#endif
-
 /** Animated texture definition.
   * Used for loading an ANIMDEFS lump from a wad.
   *
@@ -91,13 +86,9 @@ typedef struct
 	SINT8 istexture; ///< True for a texture, false for a flat.
 	char endname[9]; ///< Name of the last frame, null-terminated.
 	char startname[9]; ///< Name of the first frame, null-terminated.
-	INT32 speed ; ///< Number of tics for which each frame is shown.
+	INT32 speed; ///< Number of tics for which each frame is shown.
 } ATTRPACK animdef_t;
 
-#if defined(_MSC_VER)
-#pragma pack()
-#endif
-
 typedef struct
 {
 	UINT32 count;
@@ -142,17 +133,32 @@ static size_t maxanims;
 
 static animdef_t *animdefs = NULL;
 
-// Increase the size of animdefs to make room for a new animation definition
-static void GrowAnimDefs(void)
-{
-	maxanims++;
-	animdefs = (animdef_t *)Z_Realloc(animdefs, sizeof(animdef_t)*(maxanims + 1), PU_STATIC, NULL);
-}
-
 // A prototype; here instead of p_spec.h, so they're "private"
 void P_ParseANIMDEFSLump(INT32 wadNum, UINT16 lumpnum);
 void P_ParseAnimationDefintion(SINT8 istexture);
 
+static boolean P_FindTextureForAnimation(anim_t *anim, animdef_t *animdef)
+{
+	if (R_CheckTextureNumForName(animdef->startname) == -1)
+		return false;
+
+	anim->picnum = R_TextureNumForName(animdef->endname);
+	anim->basepic = R_TextureNumForName(animdef->startname);
+
+	return true;
+}
+
+static boolean P_FindFlatForAnimation(anim_t *anim, animdef_t *animdef)
+{
+	if (R_CheckFlatNumForName(animdef->startname) == -1)
+		return false;
+
+	anim->picnum = R_CheckFlatNumForName(animdef->endname);
+	anim->basepic = R_CheckFlatNumForName(animdef->startname);
+
+	return true;
+}
+
 /** Sets up texture and flat animations.
   *
   * Converts an ::animdef_t array loaded from a lump into
@@ -207,37 +213,38 @@ void P_InitPicAnims(void)
 	lastanim = anims;
 	for (i = 0; animdefs[i].istexture != -1; i++)
 	{
-		if (animdefs[i].istexture == 1)
-		{
-			if (R_CheckTextureNumForName(animdefs[i].startname) == -1)
-				continue;
+		animdef_t *animdef = &animdefs[i];
 
-			lastanim->picnum = R_TextureNumForName(animdefs[i].endname);
-			lastanim->basepic = R_TextureNumForName(animdefs[i].startname);
+		// If this animation is for a texture, look for one first, THEN look for a flat
+		if (animdefs[i].istexture)
+		{
+			if (!P_FindTextureForAnimation(lastanim, animdef))
+			{
+				if (!P_FindFlatForAnimation(lastanim, animdef))
+					continue;
+			}
 		}
 		else
 		{
-			if (R_CheckFlatNumForName(animdefs[i].startname) == -1)
-				continue;
-
-			lastanim->picnum = R_CheckFlatNumForName(animdefs[i].endname);
-			lastanim->basepic = R_CheckFlatNumForName(animdefs[i].startname);
+			if (!P_FindFlatForAnimation(lastanim, animdef))
+			{
+				if (!P_FindTextureForAnimation(lastanim, animdef))
+					continue;
+			}
 		}
 
-		lastanim->istexture = animdefs[i].istexture;
 		lastanim->numpics = lastanim->picnum - lastanim->basepic + 1;
 
 		if (lastanim->numpics < 2)
 		{
 			free(anims);
 			I_Error("P_InitPicAnims: bad cycle from %s to %s",
-				animdefs[i].startname, animdefs[i].endname);
+				animdefs->startname, animdefs->endname);
 		}
 
-		lastanim->speed = LONG(animdefs[i].speed);
+		lastanim->speed = animdef->speed;
 		lastanim++;
 	}
-	lastanim->istexture = -1;
 	R_ClearTextureNumCache(false);
 
 	// Clear animdefs now that we're done with it.
@@ -362,7 +369,8 @@ void P_ParseAnimationDefintion(SINT8 istexture)
 	if (i == maxanims)
 	{
 		// Increase the size to make room for the new animation definition
-		GrowAnimDefs();
+		maxanims++;
+		animdefs = (animdef_t *)Z_Realloc(animdefs, sizeof(animdef_t)*(maxanims + 1), PU_STATIC, NULL);
 		strncpy(animdefs[i].startname, animdefsToken, 9);
 	}
 
@@ -448,14 +456,6 @@ void P_ParseAnimationDefintion(SINT8 istexture)
 	}
 	animdefs[i].speed = animSpeed;
 	Z_Free(animdefsToken);
-
-	// Add it as a texture too
-	if (!istexture)
-	{
-		GrowAnimDefs();
-		M_Memcpy(&animdefs[maxanims-1], &animdefs[i], sizeof(animdef_t));
-		animdefs[maxanims-1].istexture = 1;
-	}
 }
 
 //
@@ -6098,8 +6098,7 @@ void P_UpdateSpecials(void)
 		for (INT32 i = 0; i < anim->numpics; i++)
 		{
 			INT32 pic = anim->basepic + ((leveltime/anim->speed + i) % anim->numpics);
-			if (anim->istexture)
-				texturetranslation[anim->basepic+i] = pic;
+			texturetranslation[anim->basepic+i] = pic;
 		}
 	}
 }
diff --git a/src/r_textures.c b/src/r_textures.c
index 1a191828f..d8c57b49d 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -2057,6 +2057,7 @@ INT32 R_TextureNumForName(const char *name)
 	return i;
 }
 
+// Like R_CheckTextureNumForName, but only looks in the flat namespace specifically.
 INT32 R_CheckFlatNumForName(const char *name)
 {
 	INT32 i;