X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=gl_textures.c;h=8ac8d6cad73cc6a8521ddf252a9621d287591ce4;hp=f8f1fa3828dd2e7c4fc53d29698732b61721bd3f;hb=a19dce25671ecfa28e4eb3861f8636750bf3ba68;hpb=d9835a6541d8ae9485eb86c1a79ea14f90edcffc

diff --git a/gl_textures.c b/gl_textures.c
index f8f1fa38..8ac8d6ca 100644
--- a/gl_textures.c
+++ b/gl_textures.c
@@ -1,107 +1,102 @@
+
 #include "quakedef.h"
+#include "image.h"
+#include "jpeg.h"
+#include "image_png.h"
 
-cvar_t	r_max_size = {CVAR_SAVE, "r_max_size", "2048"};
-cvar_t	r_max_scrapsize = {CVAR_SAVE, "r_max_scrapsize", "256"};
-cvar_t	r_picmip = {CVAR_SAVE, "r_picmip", "0"};
-cvar_t	r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
-cvar_t	r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
+cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, note: this is automatically reduced to match video card capabilities (such as 256 on 3Dfx cards before Voodoo4/5)"};
+cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0", "reduces resolution of textures by powers of 2, for example 1 will halve width/height, reducing texture memory usage by 75%"};
+cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1", "bilinear filters images when scaling them up to power of 2 size (mode 1), looks better than glquake (mode 0)"};
+cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1", "0 = never upload textures until used, 1 = upload most textures before use (exceptions: rarely used skin colormap layers), 2 = upload all textures before use (can increase texture memory usage significantly)"};
+cvar_t gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1", "anisotropic filtering quality (if supported by hardware), 1 sample (no anisotropy) and 8 sample (8 tap anisotropy) are recommended values"};
 
-int		gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; //NEAREST;
+int		gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
 int		gl_filter_mag = GL_LINEAR;
 
 
 static mempool_t *texturemempool;
-static mempool_t *texturedatamempool;
-static mempool_t *textureprocessingmempool;
 
 // note: this must not conflict with TEXF_ flags in r_textures.h
 // cleared when a texture is uploaded
 #define GLTEXF_UPLOAD 0x00010000
-// texture generated by code, also causes permanent GLTEXF_UPLOAD effect
-#define GLTEXF_PROCEDURAL 0x00020000
 // bitmask for mismatch checking
-#define GLTEXF_IMPORTANTBITS (GLTEXF_PROCEDURAL)
+#define GLTEXF_IMPORTANTBITS (0)
 // set when image is uploaded and freed
 #define GLTEXF_DESTROYED 0x00040000
 
-// size of images which hold fragment textures, ignores picmip and max_size
-//#define BLOCK_SIZE 256
-static int block_size;
-
-// really this number only governs gltexnuminuse
-#define MAX_GLTEXTURES 65536
-
-// since there is only one set of GL texture numbers, we have to track them
-// globally, everything else is per texture pool
-static qbyte *gltexnuminuse;
-
-typedef struct
+typedef struct textypeinfo_s
 {
 	int textype;
 	int inputbytesperpixel;
 	int internalbytesperpixel;
 	int glformat;
 	int glinternalformat;
-	int align;
 }
 textypeinfo_t;
 
-static textypeinfo_t textype_qpalette       = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 3, 1};
-static textypeinfo_t textype_rgb            = {TEXTYPE_RGB     , 3, 3, GL_RGB , 3, 3};
-static textypeinfo_t textype_rgba           = {TEXTYPE_RGBA    , 4, 4, GL_RGBA, 3, 1};
-static textypeinfo_t textype_qpalette_alpha = {TEXTYPE_QPALETTE, 1, 4, GL_RGBA, 4, 1};
-static textypeinfo_t textype_rgba_alpha     = {TEXTYPE_RGBA    , 4, 4, GL_RGBA, 4, 1};
-
-// a tiling texture (most common type)
-#define GLIMAGETYPE_TILE 0
-// a fragments texture (contains one or more fragment textures)
-#define GLIMAGETYPE_FRAGMENTS 1
+static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
+static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
+static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
+static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
+static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
+
+#define GLTEXTURETYPE_1D 0
+#define GLTEXTURETYPE_2D 1
+#define GLTEXTURETYPE_3D 2
+#define GLTEXTURETYPE_CUBEMAP 3
+
+static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
+static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
+static int gltexturetypedimensions[4] = {1, 2, 3, 2};
+static int cubemapside[6] =
+{
+	GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
+	GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
+	GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
+	GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
+	GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
+	GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
+};
 
-// a gltextureimage can have one (or more if fragments) gltextures inside
-typedef struct gltextureimage_s
+typedef struct gltexture_s
 {
-	struct gltextureimage_s *imagechain;
-	int texturecount;
-	int type; // one of the GLIMAGETYPE_ values
+	// this field is exposed to the R_GetTexture macro, for speed reasons
+	// (must be identical in rtexture_t)
 	int texnum; // GL texture slot number
-	int width, height;
-	int bytesperpixel; // bytes per pixel
-	int glformat; // GL_RGB or GL_RGBA
-	int glinternalformat; // 3 or 4
-	int flags;
-	short *blockallocation; // fragment allocation
-}
-gltextureimage_t;
 
-typedef struct gltexture_s
-{
 	// pointer to texturepool (check this to see if the texture is allocated)
 	struct gltexturepool_s *pool;
 	// pointer to next texture in texturepool chain
 	struct gltexture_s *chain;
-	// pointer into gltextureimage array
-	gltextureimage_t *image;
 	// name of the texture (this might be removed someday), no duplicates
-	char *identifier;
-	// location in the image, and size
-	int x, y, width, height;
-	// copy of the original texture supplied to the upload function, for re-uploading or deferred uploads (non-precached)
-	qbyte *inputtexels;
-	// to identify cache mismatchs (this might be removed someday)
-	int crc;
-	// flags supplied to the LoadTexture/ProceduralTexture functions
+	char identifier[32];
+	// original data size in *inputtexels
+	int inputwidth, inputheight, inputdepth;
+	// copy of the original texture(s) supplied to the upload function, for
+	// delayed uploads (non-precached)
+	unsigned char *inputtexels;
+	// original data size in *inputtexels
+	int inputdatasize;
+	// flags supplied to the LoadTexture function
 	// (might be altered to remove TEXF_ALPHA), and GLTEXF_ private flags
 	int flags;
-	// procedural texture generation function, called once per frame if the texture is used
-	int (*generate)(qbyte *buffer, int width, int height, void *parameterdata, int parameterdatasize);
-	// data provided to generate, persistent from call to call
-	qbyte *proceduraldata;
-	// size of data
-	int proceduraldatasize;
-	// used only to avoid updating the texture more than once per frame
-	int proceduralframecount;
 	// pointer to one of the textype_ structs
 	textypeinfo_t *textype;
+	// one of the GLTEXTURETYPE_ values
+	int texturetype;
+	// palette if the texture is TEXTYPE_PALETTE
+	const unsigned int *palette;
+	// actual stored texture size after gl_picmip and gl_max_size are applied
+	// (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
+	int tilewidth, tileheight, tiledepth;
+	// 1 or 6 depending on texturetype
+	int sides;
+	// bytes per pixel
+	int bytesperpixel;
+	// GL_RGB or GL_RGBA
+	int glformat;
+	// 3 or 4
+	int glinternalformat;
 }
 gltexture_t;
 
@@ -109,8 +104,7 @@ gltexture_t;
 
 typedef struct gltexturepool_s
 {
-	int sentinel;
-	struct gltextureimage_s *imagechain;
+	unsigned int sentinel;
 	struct gltexture_s *gltchain;
 	struct gltexturepool_s *next;
 }
@@ -118,28 +112,26 @@ gltexturepool_t;
 
 static gltexturepool_t *gltexturepoolchain = NULL;
 
-static qbyte *resizebuffer = NULL, *colorconvertbuffer;
+static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 static int resizebuffersize = 0;
-static qbyte *texturebuffer;
+static unsigned char *texturebuffer;
 static int texturebuffersize = 0;
 
-static int realmaxsize = 0;
-
 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 {
 	if (flags & TEXF_ALPHA)
 	{
 		switch(textype)
 		{
-		case TEXTYPE_QPALETTE:
-			return &textype_qpalette_alpha;
+		case TEXTYPE_PALETTE:
+			return &textype_palette_alpha;
 		case TEXTYPE_RGB:
-			Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
+			Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed");
 			return NULL;
 		case TEXTYPE_RGBA:
 			return &textype_rgba_alpha;
 		default:
-			Host_Error("R_GetTexTypeInfo: unknown texture format\n");
+			Host_Error("R_GetTexTypeInfo: unknown texture format");
 			return NULL;
 		}
 	}
@@ -147,14 +139,14 @@ static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 	{
 		switch(textype)
 		{
-		case TEXTYPE_QPALETTE:
-			return &textype_qpalette;
+		case TEXTYPE_PALETTE:
+			return &textype_palette;
 		case TEXTYPE_RGB:
 			return &textype_rgb;
 		case TEXTYPE_RGBA:
 			return &textype_rgba;
 		default:
-			Host_Error("R_GetTexTypeInfo: unknown texture format\n");
+			Host_Error("R_GetTexTypeInfo: unknown texture format");
 			return NULL;
 		}
 	}
@@ -178,98 +170,53 @@ static void R_PrecacheTexture(gltexture_t *glt)
 		R_UploadTexture(glt);
 }
 
-int R_GetTexture(rtexture_t *rt)
+int R_RealGetTexture(rtexture_t *rt)
 {
-	gltexture_t *glt;
-	if (!rt)
-		return 0;
-	glt = (gltexture_t *)rt;
-	if (glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL))
+	if (rt)
 	{
-		if (glt->flags & GLTEXF_PROCEDURAL)
-		{
-			if (glt->proceduralframecount != r_framecount)
-			{
-				glt->proceduralframecount = r_framecount;
-				R_UploadTexture(glt);
-			}
-		}
-		else
+		gltexture_t *glt;
+		glt = (gltexture_t *)rt;
+		if (glt->flags & GLTEXF_UPLOAD)
 			R_UploadTexture(glt);
+		return glt->texnum;
 	}
-	return glt->image->texnum;
+	else
+		return 0;
 }
 
-static void R_FreeTexture(gltexture_t *glt)
+void R_FreeTexture(rtexture_t *rt)
 {
-	gltexture_t **gltpointer;
-	gltextureimage_t *image, **gltimagepointer;
-	GLuint texnum;
+	gltexture_t *glt, **gltpointer;
 
+	glt = (gltexture_t *)rt;
 	if (glt == NULL)
-		Host_Error("R_FreeTexture: texture == NULL\n");
+		Host_Error("R_FreeTexture: texture == NULL");
 
 	for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
 	if (*gltpointer == glt)
 		*gltpointer = glt->chain;
 	else
-		Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
-
-	// note: if freeing a fragment texture, this will not make the claimed
-	// space available for new textures unless all other fragments in the
-	// image are also freed
-	image = glt->image;
-	image->texturecount--;
-	if (image->texturecount < 1)
+		Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
+
+	if (glt->texnum)
 	{
-		for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
-		if (*gltimagepointer == image)
-			*gltimagepointer = image->imagechain;
-		else
-			Host_Error("R_FreeTexture: image not linked in pool\n");
-		if (image->texnum)
-		{
-			texnum = image->texnum;
-			gltexnuminuse[image->texnum] = 0;
-			glDeleteTextures(1, &texnum);
-		}
-		if (image->blockallocation)
-			Mem_Free(image->blockallocation);
-		Mem_Free(image);
+		CHECKGLERROR
+		qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
 	}
 
-	if (glt->identifier)
-		Mem_Free(glt->identifier);
 	if (glt->inputtexels)
 		Mem_Free(glt->inputtexels);
-	if (glt->proceduraldata)
-		Mem_Free(glt->proceduraldata);
 	Mem_Free(glt);
 }
 
-static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
-{
-	gltexture_t	*glt;
-
-	if (!identifier)
-		return NULL;
-
-	for (glt = pool->gltchain;glt;glt = glt->chain)
-		if (glt->identifier && !strcmp (identifier, glt->identifier))
-			return glt;
-
-	return NULL;
-}
-
 rtexturepool_t *R_AllocTexturePool(void)
 {
 	gltexturepool_t *pool;
 	if (texturemempool == NULL)
 		return NULL;
-	pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
+	pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
 	if (pool == NULL)
 		return NULL;
-	//memset(pool, 0, sizeof(gltexturepool_t));
 	pool->next = gltexturepoolchain;
 	gltexturepoolchain = pool;
 	pool->sentinel = TEXTUREPOOL_SENTINEL;
@@ -286,28 +233,26 @@ void R_FreeTexturePool(rtexturepool_t **rtexturepool)
 	pool = (gltexturepool_t *)(*rtexturepool);
 	*rtexturepool = NULL;
 	if (pool->sentinel != TEXTUREPOOL_SENTINEL)
-		Host_Error("R_FreeTexturePool: pool already freed\n");
+		Host_Error("R_FreeTexturePool: pool already freed");
 	for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
 	if (*poolpointer == pool)
 		*poolpointer = pool->next;
 	else
-		Host_Error("R_FreeTexturePool: pool not linked\n");
+		Host_Error("R_FreeTexturePool: pool not linked");
 	while (pool->gltchain)
-		R_FreeTexture(pool->gltchain);
-	if (pool->imagechain)
-		Sys_Error("R_FreeTexturePool: not all images freed\n");
+		R_FreeTexture((rtexture_t *)pool->gltchain);
 	Mem_Free(pool);
 }
 
 
-typedef struct
+typedef struct glmode_s
 {
 	char *name;
 	int minification, magnification;
 }
 glmode_t;
 
-static glmode_t modes[] =
+static glmode_t modes[6] =
 {
 	{"GL_NEAREST", GL_NEAREST, GL_NEAREST},
 	{"GL_LINEAR", GL_LINEAR, GL_LINEAR},
@@ -317,12 +262,11 @@ static glmode_t modes[] =
 	{"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 };
 
-extern int gl_backend_rebindtextures;
-
 static void GL_TextureMode_f (void)
 {
 	int i;
-	gltextureimage_t *image;
+	GLint oldbindtexnum;
+	gltexture_t *glt;
 	gltexturepool_t *pool;
 
 	if (Cmd_Argc() == 1)
@@ -331,20 +275,20 @@ static void GL_TextureMode_f (void)
 		{
 			if (gl_filter_min == modes[i].minification)
 			{
-				Con_Printf ("%s\n", modes[i].name);
+				Con_Printf("%s\n", modes[i].name);
 				return;
 			}
 		}
-		Con_Printf ("current filter is unknown???\n");
+		Con_Print("current filter is unknown???\n");
 		return;
 	}
 
 	for (i = 0;i < 6;i++)
-		if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
+		if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
 			break;
 	if (i == 6)
 	{
-		Con_Printf ("bad filter name\n");
+		Con_Print("bad filter name\n");
 		return;
 	}
 
@@ -353,152 +297,206 @@ static void GL_TextureMode_f (void)
 
 	// change all the existing mipmap texture objects
 	// FIXME: force renderer(/client/something?) restart instead?
+	CHECKGLERROR
 	for (pool = gltexturepoolchain;pool;pool = pool->next)
 	{
-		for (image = pool->imagechain;image;image = image->imagechain)
+		for (glt = pool->gltchain;glt;glt = glt->chain)
 		{
 			// only update already uploaded images
-			if (!(image->flags & GLTEXF_UPLOAD))
+			if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
 			{
-				glBindTexture(GL_TEXTURE_2D, image->texnum);
-				if (image->flags & TEXF_MIPMAP)
-					glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
+				qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+				qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+				if (glt->flags & TEXF_MIPMAP)
+				{
+					qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
+				}
 				else
-					glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
-				glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
+				{
+					qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
+				}
+				qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
+				qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 			}
 		}
 	}
-	gl_backend_rebindtextures = true;
 }
 
-static int R_CalcTexelDataSize (gltexture_t *glt)
+static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 {
-	int width2, height2, size;
-	if (glt->flags & TEXF_FRAGMENT)
-		size = glt->width * glt->height;
-	else
+	int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
+
+	if (gl_max_size.integer > gl_max_texture_size)
+		Cvar_SetValue("gl_max_size", gl_max_texture_size);
+
+	switch (texturetype)
 	{
-		if (r_max_size.integer > realmaxsize)
-			Cvar_SetValue("r_max_size", realmaxsize);
-		// calculate final size
-		for (width2 = 1;width2 < glt->width;width2 <<= 1);
-		for (height2 = 1;height2 < glt->height;height2 <<= 1);
-		for (width2 >>= r_picmip.integer;width2 > r_max_size.integer;width2 >>= 1);
-		for (height2 >>= r_picmip.integer;height2 > r_max_size.integer;height2 >>= 1);
-		if (width2 < 1) width2 = 1;
-		if (height2 < 1) height2 = 1;
-
-		size = 0;
-		if (glt->flags & TEXF_MIPMAP)
+	default:
+	case GLTEXTURETYPE_1D:
+	case GLTEXTURETYPE_2D:
+		maxsize = gl_max_texture_size;
+		break;
+	case GLTEXTURETYPE_3D:
+		maxsize = gl_max_3d_texture_size;
+		break;
+	case GLTEXTURETYPE_CUBEMAP:
+		maxsize = gl_max_cube_map_texture_size;
+		break;
+	}
+
+	if (flags & TEXF_PICMIP)
+	{
+		maxsize = min(maxsize, gl_max_size.integer);
+		picmip = gl_picmip.integer;
+	}
+
+	if (outwidth)
+	{
+		if (gl_support_arb_texture_non_power_of_two)
+			width2 = min(inwidth >> picmip, maxsize);
+		else
 		{
-			while (width2 > 1 || height2 > 1)
-			{
-				size += width2 * height2;
-				if (width2 > 1)
-					width2 >>= 1;
-				if (height2 > 1)
-					height2 >>= 1;
-			}
-			size++; // count the last 1x1 mipmap
+			for (width2 = 1;width2 < inwidth;width2 <<= 1);
+			for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
+		}
+		*outwidth = max(1, width2);
+	}
+	if (outheight)
+	{
+		if (gl_support_arb_texture_non_power_of_two)
+			height2 = min(inheight >> picmip, maxsize);
+		else
+		{
+			for (height2 = 1;height2 < inheight;height2 <<= 1);
+			for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
 		}
+		*outheight = max(1, height2);
+	}
+	if (outdepth)
+	{
+		if (gl_support_arb_texture_non_power_of_two)
+			depth2 = min(indepth >> picmip, maxsize);
 		else
-			size = width2*height2;
+		{
+			for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
+			for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
+		}
+		*outdepth = max(1, depth2);
 	}
-	size *= glt->textype->internalbytesperpixel;
-
-	return size;
 }
 
-void R_TextureStats_PrintTotal(void)
+
+static int R_CalcTexelDataSize (gltexture_t *glt)
 {
-	int glsize, inputsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
-	gltexture_t *glt;
-	gltexturepool_t *pool;
-	for (pool = gltexturepoolchain;pool;pool = pool->next)
+	int width2, height2, depth2, size;
+
+	GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
+
+	size = width2 * height2 * depth2;
+
+	if (glt->flags & TEXF_MIPMAP)
 	{
-		for (glt = pool->gltchain;glt;glt = glt->chain)
+		while (width2 > 1 || height2 > 1 || depth2 > 1)
 		{
-			glsize = R_CalcTexelDataSize(glt);
-			inputsize = glt->width * glt->height * glt->textype->inputbytesperpixel;
-
-			total++;
-			totalt += glsize;
-			totalp += inputsize;
-			if (!(glt->flags & GLTEXF_UPLOAD))
-			{
-				loaded++;
-				loadedt += glsize;
-				loadedp += inputsize;
-			}
+			if (width2 > 1)
+				width2 >>= 1;
+			if (height2 > 1)
+				height2 >>= 1;
+			if (depth2 > 1)
+				depth2 >>= 1;
+			size += width2 * height2 * depth2;
 		}
 	}
-	Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
+
+	return size * glt->textype->internalbytesperpixel * glt->sides;
 }
 
-static void R_TextureStats_f(void)
+void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 {
-	int loaded;
+	int glsize;
+	int isloaded;
+	int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
+	int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
 	gltexture_t *glt;
 	gltexturepool_t *pool;
-	Con_Printf("glsize input crc  loaded mip alpha name\n");
+	if (printeach)
+		Con_Print("glsize input loaded mip alpha name\n");
 	for (pool = gltexturepoolchain;pool;pool = pool->next)
 	{
+		pooltotal = 0;
+		pooltotalt = 0;
+		pooltotalp = 0;
+		poolloaded = 0;
+		poolloadedt = 0;
+		poolloadedp = 0;
 		for (glt = pool->gltchain;glt;glt = glt->chain)
 		{
-			loaded = !(glt->flags & GLTEXF_UPLOAD);
-			if (glt->flags & GLTEXF_PROCEDURAL)
-				Con_Printf("%c%4i%c %4i  PROC %s %s %s %s\n"  , loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ',                               (glt->width * glt->height * glt->textype->inputbytesperpixel + 1023) / 1024,                                         loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
-			else
-				Con_Printf("%c%4i%c%c%4i%c %04X %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->width * glt->height * glt->textype->inputbytesperpixel + 1023) / 1024, glt->inputtexels ? ']' : ' ', glt->crc, loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
+			glsize = R_CalcTexelDataSize(glt);
+			isloaded = !(glt->flags & GLTEXF_UPLOAD);
+			pooltotal++;
+			pooltotalt += glsize;
+			pooltotalp += glt->inputdatasize;
+			if (isloaded)
+			{
+				poolloaded++;
+				poolloadedt += glsize;
+				poolloadedp += glt->inputdatasize;
+			}
+			if (printeach)
+				Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", isloaded ? '[' : ' ', (glsize + 1023) / 1024, isloaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', isloaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier);
 		}
-		Con_Printf("pool %10p\n", pool);
+		if (printpool)
+			Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", pool, pooltotal, pooltotalt / 1048576.0, pooltotalp / 1048576.0, poolloaded, poolloadedt / 1048576.0, poolloadedp / 1048576.0, pooltotal - poolloaded, (pooltotalt - poolloadedt) / 1048576.0, (pooltotalp - poolloadedp) / 1048576.0);
+		sumtotal += pooltotal;
+		sumtotalt += pooltotalt;
+		sumtotalp += pooltotalp;
+		sumloaded += poolloaded;
+		sumloadedt += poolloadedt;
+		sumloadedp += poolloadedp;
 	}
-	R_TextureStats_PrintTotal();
+	if (printtotal)
+		Con_Printf("textures total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", sumtotal, sumtotalt / 1048576.0, sumtotalp / 1048576.0, sumloaded, sumloadedt / 1048576.0, sumloadedp / 1048576.0, sumtotal - sumloaded, (sumtotalt - sumloadedt) / 1048576.0, (sumtotalp - sumloadedp) / 1048576.0);
 }
 
-char engineversion[40];
+static void R_TextureStats_f(void)
+{
+	R_TextureStats_Print(true, true, true);
+}
 
 static void r_textures_start(void)
 {
-	// deal with size limits of various drivers (3dfx in particular)
-	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
+	// LordHavoc: allow any alignment
 	CHECKGLERROR
+	qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
+	qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 
-	// use the largest scrap texture size we can (not sure if this is really a good idea)
-	for (block_size = 1;block_size < realmaxsize && block_size < r_max_scrapsize.integer;block_size <<= 1);
+	texturemempool = Mem_AllocPool("texture management", 0, NULL);
 
-	texturemempool = Mem_AllocPool("Texture Info");
-	texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)");
-	textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers");
-	gltexnuminuse = Mem_Alloc(texturemempool, MAX_GLTEXTURES);
-	//memset(gltexnuminuse, 0, MAX_GLTEXTURES);
+	// Disable JPEG screenshots if the DLL isn't loaded
+	if (! JPEG_OpenLibrary ())
+		Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
+	// TODO: support png screenshots?
+	PNG_OpenLibrary ();
 }
 
 static void r_textures_shutdown(void)
 {
 	rtexturepool_t *temp;
+
+	JPEG_CloseLibrary ();
+
 	while(gltexturepoolchain)
 	{
 		temp = (rtexturepool_t *) gltexturepoolchain;
 		R_FreeTexturePool(&temp);
 	}
 
-	/*
-	if (resizebuffer) Mem_Free(resizebuffer);resizebuffer = NULL;
-	if (colorconvertbuffer) Mem_Free(colorconvertbuffer);colorconvertbuffer = NULL;
-	if (texturebuffer) Mem_Free(texturebuffer);texturebuffer = NULL;
-	if (gltexnuminuse) Mem_Free(gltexnuminuse);gltexnuminuse = NULL;
-	*/
 	resizebuffersize = 0;
 	texturebuffersize = 0;
 	resizebuffer = NULL;
 	colorconvertbuffer = NULL;
 	texturebuffer = NULL;
-	gltexnuminuse = NULL;
 	Mem_FreePool(&texturemempool);
-	Mem_FreePool(&texturedatamempool);
-	Mem_FreePool(&textureprocessingmempool);
 }
 
 static void r_textures_newmap(void)
@@ -507,602 +505,489 @@ static void r_textures_newmap(void)
 
 void R_Textures_Init (void)
 {
-	Cmd_AddCommand ("gl_texturemode", &GL_TextureMode_f);
-	Cmd_AddCommand("r_texturestats", R_TextureStats_f);
-	Cvar_RegisterVariable (&r_max_scrapsize);
-	Cvar_RegisterVariable (&r_max_size);
-	Cvar_RegisterVariable (&r_picmip);
+	Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
+	Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
+	Cvar_RegisterVariable (&gl_max_size);
+	Cvar_RegisterVariable (&gl_picmip);
 	Cvar_RegisterVariable (&r_lerpimages);
 	Cvar_RegisterVariable (&r_precachetextures);
-	gltexnuminuse = NULL;
+	Cvar_RegisterVariable (&gl_texture_anisotropy);
 
 	R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 }
 
-static void R_Upload(gltexture_t *glt, qbyte *data)
+void R_Textures_Frame (void)
 {
-	int mip, width, height, internalformat;
-	qbyte *prevbuffer;
-	prevbuffer = data;
-
-	glBindTexture(GL_TEXTURE_2D, glt->image->texnum);
-	CHECKGLERROR
+	static int old_aniso = 0;
 
-	gl_backend_rebindtextures = true;
+	// could do procedural texture animation here, if we keep track of which
+	// textures were accessed this frame...
 
-	glt->flags &= ~GLTEXF_UPLOAD;
+	// free the resize buffers
+	resizebuffersize = 0;
+	if (resizebuffer)
+	{
+		Mem_Free(resizebuffer);
+		resizebuffer = NULL;
+	}
+	if (colorconvertbuffer)
+	{
+		Mem_Free(colorconvertbuffer);
+		colorconvertbuffer = NULL;
+	}
 
-	if (glt->flags & TEXF_FRAGMENT)
+	if (old_aniso != gl_texture_anisotropy.integer)
 	{
-		if (resizebuffersize < glt->image->width * glt->image->height * glt->image->bytesperpixel)
-		{
-			resizebuffersize = glt->image->width * glt->image->height * glt->image->bytesperpixel;
-			if (resizebuffer)
-				Mem_Free(resizebuffer);
-			if (colorconvertbuffer)
-				Mem_Free(colorconvertbuffer);
-			resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
-			colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
-			if (!resizebuffer || !colorconvertbuffer)
-				Host_Error("R_Upload: out of memory\n");
-		}
+		gltexture_t *glt;
+		gltexturepool_t *pool;
+		GLint oldbindtexnum;
 
-		if (glt->image->flags & GLTEXF_UPLOAD)
-		{
-			Con_DPrintf("uploaded new fragments image\n");
-			glt->image->flags &= ~GLTEXF_UPLOAD;
-			memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->bytesperpixel);
-			glTexImage2D (GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
-			CHECKGLERROR
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
-			CHECKGLERROR
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
-			CHECKGLERROR
-		}
+		old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
 
-		if (prevbuffer == NULL)
-		{
-			memset(resizebuffer, 255, glt->width * glt->height * glt->image->bytesperpixel);
-			prevbuffer = resizebuffer;
-		}
-		else if (glt->textype->textype == TEXTYPE_QPALETTE)
-		{
-			// promote paletted to RGBA, so we only have to worry about RGB and
-			// RGBA in the rest of this code
-			Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
-			prevbuffer = colorconvertbuffer;
-		}
+		Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 
-		glTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
 		CHECKGLERROR
-		return;
-	}
+		for (pool = gltexturepoolchain;pool;pool = pool->next)
+		{
+			for (glt = pool->gltchain;glt;glt = glt->chain)
+			{
+				// only update already uploaded images
+				if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
+				{
+					qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 
-	glt->image->flags &= ~GLTEXF_UPLOAD;
+					qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+					qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 
-	// these are rounded up versions of the size to do better resampling
-	for (width = 1;width < glt->width;width <<= 1);
-	for (height = 1;height < glt->height;height <<= 1);
+					qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+				}
+			}
+		}
+	}
+}
 
-	if (resizebuffersize < width * height * glt->image->bytesperpixel)
+void R_MakeResizeBufferBigger(int size)
+{
+	if (resizebuffersize < size)
 	{
-		resizebuffersize = width * height * glt->image->bytesperpixel;
+		resizebuffersize = size;
 		if (resizebuffer)
 			Mem_Free(resizebuffer);
 		if (colorconvertbuffer)
 			Mem_Free(colorconvertbuffer);
-		resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
-		colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
+		resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
+		colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
 		if (!resizebuffer || !colorconvertbuffer)
-			Host_Error("R_Upload: out of memory\n");
+			Host_Error("R_Upload: out of memory");
 	}
+}
 
-	if (prevbuffer == NULL)
+static void GL_SetupTextureParameters(int flags, int texturetype)
+{
+	int textureenum = gltexturetypeenums[texturetype];
+	int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
+
+	CHECKGLERROR
+
+	if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
 	{
-		width = glt->image->width;
-		height = glt->image->height;
-		memset(resizebuffer, 255, width * height * glt->image->bytesperpixel);
-		prevbuffer = resizebuffer;
+		int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
+		if (gl_texture_anisotropy.integer != aniso)
+			Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
+		qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
 	}
-	else
+	qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
+	qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
+	if (gltexturetypedimensions[texturetype] >= 3)
 	{
-		if (glt->textype->textype == TEXTYPE_QPALETTE)
-		{
-			// promote paletted to RGBA, so we only have to worry about RGB and
-			// RGBA in the rest of this code
-			Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height, d_8to24table);
-			prevbuffer = colorconvertbuffer;
-		}
+		qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
+	}
 
-		if (glt->width != width || glt->height != height)
+	CHECKGLERROR
+	if (flags & TEXF_FORCENEAREST)
+	{
+		if (flags & TEXF_MIPMAP)
 		{
-			Image_Resample(prevbuffer, glt->width, glt->height, resizebuffer, width, height, glt->image->bytesperpixel, r_lerpimages.integer);
-			prevbuffer = resizebuffer;
+			qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
 		}
-
-		// apply picmip/max_size limitations
-		while (width > glt->image->width || height > glt->image->height)
+		else
 		{
-			Image_MipReduce(prevbuffer, resizebuffer, &width, &height, glt->image->width, glt->image->height, glt->image->bytesperpixel);
-			prevbuffer = resizebuffer;
+			qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
 		}
+		qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
 	}
-
-	// 3 and 4 are converted by the driver to it's preferred format for the current display mode
-	internalformat = 3;
-	if (glt->flags & TEXF_ALPHA)
-		internalformat = 4;
-
-	mip = 0;
-	glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-	CHECKGLERROR
-	if (glt->flags & TEXF_MIPMAP)
+	else if (flags & TEXF_FORCELINEAR)
 	{
-		while (width > 1 || height > 1)
+		if (flags & TEXF_MIPMAP)
 		{
-			Image_MipReduce(prevbuffer, resizebuffer, &width, &height, 1, 1, glt->image->bytesperpixel);
-			prevbuffer = resizebuffer;
-
-			glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-			CHECKGLERROR
+			if (gl_filter_min == GL_NEAREST_MIPMAP_LINEAR || gl_filter_min == GL_LINEAR_MIPMAP_LINEAR)
+			{
+				qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);CHECKGLERROR
+			}
+			else
+			{
+				qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
+			}
 		}
-
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-		CHECKGLERROR
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
-		CHECKGLERROR
+		else
+		{
+			qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
+		}
+		qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
 	}
 	else
 	{
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_mag);
-		CHECKGLERROR
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_mag);
-		CHECKGLERROR
+		if (flags & TEXF_MIPMAP)
+		{
+			qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
+		}
+		else
+		{
+			qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
+		}
+		qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
 	}
+
+	CHECKGLERROR
 }
 
-static void R_FindImageForTexture(gltexture_t *glt)
+static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
 {
-	int i, j, best, best2, x, y, w, h;
-	textypeinfo_t *texinfo;
-	gltexturepool_t *pool;
-	gltextureimage_t *image, **imagechainpointer;
-	texinfo = glt->textype;
-	pool = glt->pool;
-
-	x = 0;
-	y = 0;
-	w = glt->width;
-	h = glt->height;
-	if (glt->flags & TEXF_FRAGMENT)
-	{
-		for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
-		{
-			image = *imagechainpointer;
-			if (image->type != GLIMAGETYPE_FRAGMENTS)
-				continue;
-			if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
-				continue;
-
-			// got a fragments texture, find a place in it if we can
-			best = block_size;
-			for (best = block_size, i = 0;i < block_size - w;i += texinfo->align)
-			{
-				for (best2 = 0, j = 0;j < w;j++)
-				{
-					if (image->blockallocation[i+j] >= best)
-						break;
-					if (best2 < image->blockallocation[i+j])
-						best2 = image->blockallocation[i+j];
-				}
-				if (j == w)
-				{
-					// this is a valid spot
-					x = i;
-					y = best = best2;
-				}
-			}
-
-			if (best + h > block_size)
-				continue;
+	int i, mip, width, height, depth;
+	GLint oldbindtexnum;
+	unsigned char *prevbuffer;
+	prevbuffer = data;
 
-			for (i = 0;i < w;i++)
-				image->blockallocation[x + i] = best + h;
+	CHECKGLERROR
 
-			glt->x = x;
-			glt->y = y;
-			glt->image = image;
-			image->texturecount++;
-			return;
-		}
+	// we need to restore the texture binding after finishing the upload
+	qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+	qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 
-		image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-		if (image == NULL)
-			Sys_Error("R_FindImageForTexture: ran out of memory\n");
-		//memset(image, 0, sizeof(*image));
-		image->type = GLIMAGETYPE_FRAGMENTS;
-		image->width = block_size;
-		image->height = block_size;
-		image->blockallocation = Mem_Alloc(texturemempool, block_size * sizeof(short));
-		memset(image->blockallocation, 0, block_size * sizeof(short));
-
-		x = 0;
-		y = 0;
-		for (i = 0;i < w;i++)
-			image->blockallocation[x + i] = y + h;
+	// these are rounded up versions of the size to do better resampling
+	if (gl_support_arb_texture_non_power_of_two)
+	{
+		width = glt->inputwidth;
+		height = glt->inputheight;
+		depth = glt->inputdepth;
 	}
 	else
 	{
-		for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
-
-		image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-		if (image == NULL)
-			Sys_Error("R_FindImageForTexture: ran out of memory\n");
-		//memset(image, 0, sizeof(*image));
-		image->type = GLIMAGETYPE_TILE;
-		image->blockallocation = NULL;
-
-		// calculate final size
-		if (r_max_size.integer > realmaxsize)
-			Cvar_SetValue("r_max_size", realmaxsize);
-		for (image->width = 1;image->width < glt->width;image->width <<= 1);
-		for (image->height = 1;image->height < glt->height;image->height <<= 1);
-		for (image->width >>= r_picmip.integer;image->width > r_max_size.integer;image->width >>= 1);
-		for (image->height >>= r_picmip.integer;image->height > r_max_size.integer;image->height >>= 1);
-		if (image->width < 1) image->width = 1;
-		if (image->height < 1) image->height = 1;
+		for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
+		for (height = 1;height < glt->inputheight;height <<= 1);
+		for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 	}
-	image->glinternalformat = texinfo->glinternalformat;
-	image->glformat = texinfo->glformat;
-	image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA)) | GLTEXF_UPLOAD;
-	image->bytesperpixel = texinfo->internalbytesperpixel;
-	for (i = 1;i < MAX_GLTEXTURES;i++)
-		if (!gltexnuminuse[i])
-			break;
-	if (i < MAX_GLTEXTURES)
-		gltexnuminuse[image->texnum = i] = true;
-	else
-		Sys_Error("R_FindImageForTexture: ran out of GL textures\n");
-	*imagechainpointer = image;
-	image->texturecount++;
 
-	glt->x = x;
-	glt->y = y;
-	glt->image = image;
-}
+	R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
+	R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
 
-// note: R_FindImageForTexture must be called before this
-static void R_UploadTexture (gltexture_t *glt)
-{
-	if (!(glt->flags & (GLTEXF_UPLOAD | GLTEXF_PROCEDURAL)))
-		return;
+	if (prevbuffer == NULL)
+	{
+		memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
+		prevbuffer = resizebuffer;
+	}
+	else if (glt->textype->textype == TEXTYPE_PALETTE)
+	{
+		// promote paletted to RGBA, so we only have to worry about RGB and
+		// RGBA in the rest of this code
+		Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
+		prevbuffer = colorconvertbuffer;
+	}
 
-	if (glt->flags & GLTEXF_PROCEDURAL)
+	if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
 	{
-		if (glt->generate)
+		// update a portion of the image
+		switch(glt->texturetype)
 		{
-			if (texturebuffersize < glt->width * glt->height * glt->textype->inputbytesperpixel)
-			{
-				if (texturebuffer)
-					Mem_Free(texturebuffer);
-				texturebuffersize = glt->width * glt->height * glt->textype->inputbytesperpixel;
-				texturebuffer = Mem_Alloc(textureprocessingmempool, texturebuffersize);
-			}
-
-			glt->generate(texturebuffer, glt->width, glt->height, (void *)glt->proceduraldata, glt->proceduraldatasize);
+		case GLTEXTURETYPE_1D:
+			qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			break;
+		case GLTEXTURETYPE_2D:
+			qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			break;
+		case GLTEXTURETYPE_3D:
+			qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			break;
+		default:
+			Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
+			break;
 		}
 	}
 	else
 	{
-		R_Upload(glt, glt->inputtexels);
-		if (glt->inputtexels)
+		if (fragx || fragy || fragz || glt->inputwidth != fragwidth || glt->inputheight != fragheight || glt->inputdepth != fragdepth)
+			Host_Error("R_Upload: partial update not allowed on initial upload or in combination with PICMIP or MIPMAP\n");
+
+		// upload the image for the first time
+		glt->flags &= ~GLTEXF_UPLOAD;
+
+		// cubemaps contain multiple images and thus get processed a bit differently
+		if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
 		{
-			Mem_Free(glt->inputtexels);
-			glt->inputtexels = NULL;
-			glt->flags |= GLTEXF_DESTROYED;
+			if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
+			{
+				Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
+				prevbuffer = resizebuffer;
+			}
+			// picmip/max_size
+			while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
+			{
+				Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
+				prevbuffer = resizebuffer;
+			}
 		}
-		else if (glt->flags & GLTEXF_DESTROYED)
-			Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
+		mip = 0;
+		switch(glt->texturetype)
+		{
+		case GLTEXTURETYPE_1D:
+			qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			if (glt->flags & TEXF_MIPMAP)
+			{
+				while (width > 1 || height > 1 || depth > 1)
+				{
+					Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
+					prevbuffer = resizebuffer;
+					qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+				}
+			}
+			break;
+		case GLTEXTURETYPE_2D:
+			qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			if (glt->flags & TEXF_MIPMAP)
+			{
+				while (width > 1 || height > 1 || depth > 1)
+				{
+					Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
+					prevbuffer = resizebuffer;
+					qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+				}
+			}
+			break;
+		case GLTEXTURETYPE_3D:
+			qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+			if (glt->flags & TEXF_MIPMAP)
+			{
+				while (width > 1 || height > 1 || depth > 1)
+				{
+					Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
+					prevbuffer = resizebuffer;
+					qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+				}
+			}
+			break;
+		case GLTEXTURETYPE_CUBEMAP:
+			// convert and upload each side in turn,
+			// from a continuous block of input texels
+			texturebuffer = prevbuffer;
+			for (i = 0;i < 6;i++)
+			{
+				prevbuffer = texturebuffer;
+				texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
+				if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
+				{
+					Image_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
+					prevbuffer = resizebuffer;
+				}
+				// picmip/max_size
+				while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
+				{
+					Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
+					prevbuffer = resizebuffer;
+				}
+				mip = 0;
+				qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+				if (glt->flags & TEXF_MIPMAP)
+				{
+					while (width > 1 || height > 1 || depth > 1)
+					{
+						Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
+						prevbuffer = resizebuffer;
+						qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+					}
+				}
+			}
+			break;
+		}
+		GL_SetupTextureParameters(glt->flags, glt->texturetype);
 	}
+	qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 }
 
-static gltexture_t *R_SetupTexture(gltexturepool_t *pool, char *identifier, int crc, int width, int height, int flags, textypeinfo_t *texinfo, qbyte *data, int (*generate)(qbyte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
+static void R_UploadTexture (gltexture_t *glt)
 {
-	gltexture_t *glt;
-	glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
-	//memset(glt, 0, sizeof(gltexture_t));
-	if (identifier)
-	{
-		glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
-		strcpy (glt->identifier, identifier);
-	}
-	else
-		glt->identifier = NULL;
-	glt->pool = pool;
-	glt->chain = pool->gltchain;
-	pool->gltchain = glt;
-	glt->crc = crc;
-	glt->width = width;
-	glt->height = height;
-	glt->flags = flags;
-	glt->textype = texinfo;
+	if (!(glt->flags & GLTEXF_UPLOAD))
+		return;
 
-	if (data)
+	CHECKGLERROR
+	qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+	R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
+	if (glt->inputtexels)
 	{
-		glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * texinfo->inputbytesperpixel);
-		if (glt->inputtexels == NULL)
-			Sys_Error("R_SetupTexture: out of memory\n");
-		memcpy(glt->inputtexels, data, glt->width * glt->height * texinfo->inputbytesperpixel);
-	}
-	else
+		Mem_Free(glt->inputtexels);
 		glt->inputtexels = NULL;
-
-	glt->generate = generate;
-	glt->proceduraldatasize = proceduraldatasize;
-	if (proceduraldatasize)
-	{
-		glt->proceduraldata = Mem_Alloc(texturemempool, proceduraldatasize);
-		if (glt->proceduraldata == NULL)
-			Sys_Error("R_SetupTexture: out of memory\n");
+		glt->flags |= GLTEXF_DESTROYED;
 	}
-	else
-		glt->proceduraldata = NULL;
-
-	R_FindImageForTexture(glt);
-	R_PrecacheTexture(glt);
-
-	return glt;
+	else if (glt->flags & GLTEXF_DESTROYED)
+		Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 }
 
-/*
-================
-R_LoadTexture
-================
-*/
-rtexture_t *R_LoadTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, qbyte *data, int textype, int flags)
+static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const unsigned char *data, const unsigned int *palette)
 {
-	int i;
+	int i, size;
 	gltexture_t *glt;
 	gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
 	textypeinfo_t *texinfo;
-	unsigned short crc;
 
 	if (cls.state == ca_dedicated)
 		return NULL;
 
-	texinfo = R_GetTexTypeInfo(textype, flags);
-
-	// data can be NULL
-//	if (data == NULL)
-//		Host_Error("R_LoadTexture: \"%s\" has no data\n", identifier);
+	if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
+	{
+		Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
+		return NULL;
+	}
+	if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
+	{
+		Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
+		return NULL;
+	}
 
-	if (flags & TEXF_FRAGMENT)
+	texinfo = R_GetTexTypeInfo(textype, flags);
+	size = width * height * depth * sides * texinfo->inputbytesperpixel;
+	if (size < 1)
 	{
-		if (width > block_size || height > block_size)
-			Host_Error("R_LoadTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
-		if ((width * texinfo->internalbytesperpixel) & 3)
-			Host_Error("R_LoadTexture: incompatible width for fragment");
+		Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
+		return NULL;
 	}
 
 	// clear the alpha flag if the texture has no transparent pixels
 	switch(textype)
 	{
-	case TEXTYPE_QPALETTE:
+	case TEXTYPE_PALETTE:
 		if (flags & TEXF_ALPHA)
 		{
 			flags &= ~TEXF_ALPHA;
-			for (i = 0;i < width * height;i++)
+			if (data)
 			{
-				if (data[i] == 255)
+				for (i = 0;i < size;i++)
 				{
-					flags |= TEXF_ALPHA;
-					break;
+					if (((unsigned char *)&palette[data[i]])[3] < 255)
+					{
+						flags |= TEXF_ALPHA;
+						break;
+					}
 				}
 			}
 		}
 		break;
 	case TEXTYPE_RGB:
 		if (flags & TEXF_ALPHA)
-			Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
+			Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA");
 		break;
 	case TEXTYPE_RGBA:
 		if (flags & TEXF_ALPHA)
 		{
 			flags &= ~TEXF_ALPHA;
-			for (i = 0;i < width * height;i++)
+			if (data)
 			{
-				if (data[i * 4 + 3] < 255)
+				for (i = 3;i < size;i += 4)
 				{
-					flags |= TEXF_ALPHA;
-					break;
+					if (data[i] < 255)
+					{
+						flags |= TEXF_ALPHA;
+						break;
+					}
 				}
 			}
 		}
 		break;
 	default:
-		Host_Error("R_LoadTexture: unknown texture type\n");
+		Host_Error("R_LoadTexture: unknown texture type");
 	}
 
-	// LordHavoc: do a CRC to confirm the data really is the same as previous occurances.
-	if (data == NULL)
-		crc = 0;
-	else
-		crc = CRC_Block(data, width*height*texinfo->inputbytesperpixel);
+	glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
+	if (identifier)
+		strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
+	glt->pool = pool;
+	glt->chain = pool->gltchain;
+	pool->gltchain = glt;
+	glt->inputwidth = width;
+	glt->inputheight = height;
+	glt->inputdepth = depth;
+	glt->flags = flags | GLTEXF_UPLOAD;
+	glt->textype = texinfo;
+	glt->texturetype = texturetype;
+	glt->inputdatasize = size;
+	glt->palette = palette;
+	glt->glinternalformat = texinfo->glinternalformat;
+	glt->glformat = texinfo->glformat;
+	glt->bytesperpixel = texinfo->internalbytesperpixel;
+	glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
+	glt->texnum = -1;
 
-	// see if the texture is already present
-	if (identifier && (glt = R_FindTexture(pool, identifier)))
+	if (data)
 	{
-		if (crc == glt->crc && width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
-		{
-			Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
-			return (rtexture_t *)glt; // exact match, use existing
-		}
-		Con_Printf("R_LoadTexture: cache mismatch on %s, replacing old texture\n", identifier);
-		R_FreeTexture(glt);
+		glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
+		memcpy(glt->inputtexels, data, size);
 	}
+	else
+		glt->inputtexels = NULL;
 
-	return (rtexture_t *)R_SetupTexture(pool, identifier, crc, width, height, flags | GLTEXF_UPLOAD, texinfo, data, NULL, NULL, 0);
+	GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
+	R_PrecacheTexture(glt);
+
+	return (rtexture_t *)glt;
 }
 
-rtexture_t *R_ProceduralTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, int textype, int flags, int (*generate)(qbyte *buffer, int width, int height, void *proceduraldata, int proceduraldatasize), void *proceduraldata, int proceduraldatasize)
+rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
 {
-	gltexture_t		*glt;
-	gltexturepool_t	*pool = (gltexturepool_t *)rtexturepool;
-	textypeinfo_t	*texinfo;
-
-	if (cls.state == ca_dedicated)
-		return NULL;
-
-	texinfo = R_GetTexTypeInfo(textype, flags);
-
-	// no function is supported, for odd uses
-//	if (generate == NULL)
-//		Host_Error("R_ProceduralTexture: \"%s\" has no generate function\n", identifier);
-	if (flags & TEXF_FRAGMENT)
-	{
-		if (width > block_size || height > block_size)
-			Host_Error("R_ProceduralTexture: fragment too big, must be no more than %dx%d\n", block_size, block_size);
-		if ((width * texinfo->internalbytesperpixel) & 3)
-			Host_Error("R_ProceduralTexture: incompatible width for fragment");
-	}
-
-	// see if the texture is already present
-	if (identifier && (glt = R_FindTexture(pool, identifier)))
-	{
-		if (width == glt->width && height == glt->height && texinfo == glt->textype && ((flags ^ glt->flags) & TEXF_IMPORTANTBITS) == 0 && ((flags ^ glt->flags) & GLTEXF_IMPORTANTBITS) == 0)
-		{
-			Con_Printf("R_LoadTexture: exact match with existing texture %s\n", identifier);
-			return (rtexture_t *)glt; // exact match, use existing
-		}
-		Con_Printf("R_LoadTexture: cache mismatch, replacing old texture\n");
-		R_FreeTexture(glt);
-	}
+	return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
+}
 
-	return (rtexture_t *)R_SetupTexture(pool, identifier, 0, width, height, flags | GLTEXF_PROCEDURAL | GLTEXF_UPLOAD, texinfo, NULL, generate, proceduraldata, proceduraldatasize);
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, int textype, int flags, const unsigned int *palette)
+{
+	return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
 }
 
-int R_TextureHasAlpha(rtexture_t *rt)
+rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, int textype, int flags, const unsigned int *palette)
 {
-	gltexture_t *glt;
-	if (!rt)
-		return false;
-	glt = (gltexture_t *)rt;
-	return (glt->flags & TEXF_ALPHA) != 0;
+	return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
 }
 
-int R_TextureWidth(rtexture_t *rt)
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette)
 {
-	if (!rt)
-		return false;
-	return ((gltexture_t *)rt)->width;
+	return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
 }
 
-int R_TextureHeight(rtexture_t *rt)
+int R_TextureHasAlpha(rtexture_t *rt)
 {
-	if (!rt)
-		return false;
-	return ((gltexture_t *)rt)->height;
+	return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
 }
 
-void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
+int R_TextureWidth(rtexture_t *rt)
 {
-	gltexture_t *glt;
-	float iwidth, iheight;
-	if (cls.state == ca_dedicated)
-	{
-		if (x)
-			*x = 0;
-		if (y)
-			*y = 0;
-		if (fx1 || fy1 || fx2 || fy2)
-		{
-			if (fx1)
-				*fx1 = 0;
-			if (fy1)
-				*fy1 = 0;
-			if (fx2)
-				*fx2 = 1;
-			if (fy2)
-				*fy2 = 1;
-		}
-		return;
-	}
-	if (!rt)
-		Host_Error("R_FragmentLocation: no texture supplied\n");
-	glt = (gltexture_t *)rt;
-	if (glt->flags & TEXF_FRAGMENT)
-	{
-		if (x)
-			*x = glt->x;
-		if (y)
-			*y = glt->y;
-		if (fx1 || fy1 || fx2 || fy2)
-		{
-			iwidth = 1.0f / glt->image->width;
-			iheight = 1.0f / glt->image->height;
-			if (fx1)
-				*fx1 = glt->x * iwidth;
-			if (fy1)
-				*fy1 = glt->y * iheight;
-			if (fx2)
-				*fx2 = (glt->x + glt->width) * iwidth;
-			if (fy2)
-				*fy2 = (glt->y + glt->height) * iheight;
-		}
-	}
-	else
-	{
-		if (x)
-			*x = 0;
-		if (y)
-			*y = 0;
-		if (fx1 || fy1 || fx2 || fy2)
-		{
-			if (fx1)
-				*fx1 = 0;
-			if (fy1)
-				*fy1 = 0;
-			if (fx2)
-				*fx2 = 1;
-			if (fy2)
-				*fy2 = 1;
-		}
-	}
+	return rt ? ((gltexture_t *)rt)->inputwidth : 0;
 }
 
-int R_CompatibleFragmentWidth(int width, int textype, int flags)
+int R_TextureHeight(rtexture_t *rt)
 {
-	textypeinfo_t *texinfo = R_GetTexTypeInfo(textype, flags);
-	while ((width * texinfo->internalbytesperpixel) & 3)
-		width++;
-	return width;
+	return rt ? ((gltexture_t *)rt)->inputheight : 0;
 }
 
-void R_UpdateTexture(rtexture_t *rt, qbyte *data)
+void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)
 {
 	gltexture_t *glt;
 	if (rt == NULL)
-		Host_Error("R_UpdateTexture: no texture supplied\n");
+		Host_Error("R_UpdateTexture: no texture supplied");
 	if (data == NULL)
-		Host_Error("R_UpdateTexture: no data supplied\n");
+		Host_Error("R_UpdateTexture: no data supplied");
 	glt = (gltexture_t *)rt;
-	/*
-	if (!(glt->flags & GLTEXF_PROCEDURAL))
-	{
-		if (glt->inputtexels == NULL)
-		{
-			glt->inputtexels = Mem_Alloc(texturedatamempool, glt->width * glt->height * glt->textype->inputbytesperpixel);
-			if (glt->inputtexels == NULL)
-				Host_Error("R_UpdateTexture: ran out of memory\n");
-		}
-		memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
-	}
-	R_Upload(glt, data);
-	*/
-	// if it has not been uploaded yet, update the data that will be used when it is
-	if (glt->inputtexels)
-		memcpy(glt->inputtexels, data, glt->width * glt->height * glt->textype->inputbytesperpixel);
-	else
-		R_Upload(glt, data);
+
+	// we need it to be uploaded before we can update a part of it
+	if (glt->flags & GLTEXF_UPLOAD)
+		R_UploadTexture(glt);
+
+	// update part of the texture
+	R_Upload(glt, data, x, y, 0, width, height, 1);
 }