]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_textures.c
gave names to nearly all structs and enums which should make for better C++ error...
[xonotic/darkplaces.git] / gl_textures.c
index a5644a3d5c5645e85e5982aa56d50e453687376b..e8476796cdacb73a09ed4883dff79be2f8db27ac 100644 (file)
+
 #include "quakedef.h"
+#include "image.h"
+#include "jpeg.h"
 
-cvar_t         r_max_size = {"r_max_size", "2048"};
-cvar_t         r_picmip = {"r_picmip", "0"};
-cvar_t         r_lerpimages = {"r_lerpimages", "1"};
-cvar_t         r_upload = {"r_upload", "1"};
-cvar_t         r_precachetextures = {"r_precachetextures", "1", true};
+cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048"};
+cvar_t gl_max_scrapsize = {CVAR_SAVE, "gl_max_scrapsize", "256"};
+cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0"};
+cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
+cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
+cvar_t  gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1"};
 
-int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; //NEAREST;
-int            gl_filter_max = GL_LINEAR;
+int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
+int            gl_filter_mag = GL_LINEAR;
 
 
-int            texels;
+static mempool_t *texturemempool;
 
-// 65536x65536
-#define MAXMIPS 16
+// note: this must not conflict with TEXF_ flags in r_textures.h
+// cleared when a texture is uploaded
+#define GLTEXF_UPLOAD 0x00010000
+// bitmask for mismatch checking
+#define GLTEXF_IMPORTANTBITS (0)
+// set when image is uploaded and freed
+#define GLTEXF_DESTROYED 0x00040000
 
-#define GLTEXF_LERPED 1
-#define GLTEXF_UPLOADED 2
+// size of images which hold fragment textures, ignores picmip and max_size
+static int block_size;
 
-typedef struct
+typedef struct textypeinfo_s
+{
+       int textype;
+       int inputbytesperpixel;
+       int internalbytesperpixel;
+       int glformat;
+       int glinternalformat;
+}
+textypeinfo_t;
+
+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};
+static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
+
+// a tiling texture (most common type)
+#define GLIMAGETYPE_TILE 0
+// a fragments texture (contains one or more fragment textures)
+#define GLIMAGETYPE_FRAGMENTS 1
+
+#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] =
 {
-       char    identifier[64];
-       int             texnum; // GL texture slot number
-       int             texeldatasize; // computed memory usage of this texture (including mipmaps, expansion to 32bit, etc)
-       byte    *inputtexels; // copy of the original texture supplied to the upload function, for re-uploading or deferred uploads (non-precached)
-       int             inputtexeldatasize; // size of the original texture
-       unsigned short width, height;
-// LordHavoc: CRC to identify cache mismatchs
-       unsigned short crc;
-       int flags; // the requested flags when the texture was supplied to the upload function
-       int internalflags; // internal notes (lerped, etc)
-} gltexture_t;
+       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
+};
 
-#define        MAX_GLTEXTURES  4096
-gltexture_t    *gltextures;
-unsigned int numgltextures = 0, gl_texture_number = 1;
+// a gltextureimage can have one (or more if fragments) gltextures inside
+typedef struct gltextureimage_s
+{
+       struct gltextureimage_s *imagechain;
+       int texturecount;
+       int type; // one of the GLIMAGETYPE_ values
+       int texturetype; // one of the GLTEXTURETYPE_ values
+       int sides; // 1 or 6 depending on texturetype
+       int texnum; // GL texture slot number
+       int width, height, depth; // 3D texture support
+       int bytesperpixel; // bytes per pixel
+       int glformat; // GL_RGB or GL_RGBA
+       int glinternalformat; // 3 or 4
+       int flags;
+       short *blockallocation; // fragment allocation (2D only)
+}
+gltextureimage_t;
 
-void GL_UploadTexture(gltexture_t *t);
+typedef struct gltexture_s
+{
+       // this field is exposed to the R_GetTexture macro, for speed reasons
+       // (must be identical in rtexture_t)
+       int texnum; // GL texture slot number
+
+       // 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[32];
+       // location in the image, and size
+       int x, y, z, width, height, depth;
+       // copy of the original texture(s) supplied to the upload function, for
+       // delayed uploads (non-precached)
+       qbyte *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;
+       // 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;
+}
+gltexture_t;
+
+#define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 
-int R_GetTexture(rtexture_t *rt)
+typedef struct gltexturepool_s
 {
-       gltexture_t *glt;
-       if (!rt)
+       unsigned int sentinel;
+       struct gltextureimage_s *imagechain;
+       struct gltexture_s *gltchain;
+       struct gltexturepool_s *next;
+}
+gltexturepool_t;
+
+static gltexturepool_t *gltexturepoolchain = NULL;
+
+static qbyte *resizebuffer = NULL, *colorconvertbuffer;
+static int resizebuffersize = 0;
+static qbyte *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_PALETTE:
+                       return &textype_palette_alpha;
+               case TEXTYPE_RGB:
+                       Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
+                       return NULL;
+               case TEXTYPE_RGBA:
+                       return &textype_rgba_alpha;
+               default:
+                       Host_Error("R_GetTexTypeInfo: unknown texture format\n");
+                       return NULL;
+               }
+       }
+       else
+       {
+               switch(textype)
+               {
+               case TEXTYPE_PALETTE:
+                       return &textype_palette;
+               case TEXTYPE_RGB:
+                       return &textype_rgb;
+               case TEXTYPE_RGBA:
+                       return &textype_rgba;
+               case TEXTYPE_DSDT:
+                       return &textype_dsdt;
+               default:
+                       Host_Error("R_GetTexTypeInfo: unknown texture format\n");
+                       return NULL;
+               }
+       }
+}
+
+static void R_UploadTexture(gltexture_t *t);
+
+static void R_PrecacheTexture(gltexture_t *glt)
+{
+       int precache;
+       precache = false;
+       if (glt->flags & TEXF_ALWAYSPRECACHE)
+               precache = true;
+       else if (r_precachetextures.integer >= 2)
+               precache = true;
+       else if (r_precachetextures.integer >= 1)
+               if (glt->flags & TEXF_PRECACHE)
+                       precache = true;
+
+       if (precache)
+               R_UploadTexture(glt);
+}
+
+int R_RealGetTexture(rtexture_t *rt)
+{
+       if (rt)
+       {
+               gltexture_t *glt;
+               glt = (gltexture_t *)rt;
+               if (glt->flags & GLTEXF_UPLOAD)
+                       R_UploadTexture(glt);
+               glt->texnum = glt->image->texnum;
+               return glt->image->texnum;
+       }
+       else
                return 0;
+}
+
+void R_FreeTexture(rtexture_t *rt)
+{
+       gltexture_t *glt, **gltpointer;
+       gltextureimage_t *image, **gltimagepointer;
+
        glt = (gltexture_t *)rt;
-       if (!(glt->internalflags & GLTEXF_UPLOADED))
+       if (glt == NULL)
+               Host_Error("R_FreeTexture: texture == NULL\n");
+
+       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
+       if (glt->image)
        {
-               GL_UploadTexture(glt);
-               if (!(glt->internalflags & GLTEXF_UPLOADED))
-                       Host_Error("R_GetTexture: unable to upload texture\n");
+               image = glt->image;
+               image->texturecount--;
+               if (image->texturecount < 1)
+               {
+                       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)
+                               qglDeleteTextures(1, (GLuint *)&image->texnum);
+                       if (image->blockallocation)
+                               Mem_Free(image->blockallocation);
+                       Mem_Free(image);
+               }
        }
-       return glt->texnum;
+
+       if (glt->inputtexels)
+               Mem_Free(glt->inputtexels);
+       Mem_Free(glt);
+}
+
+rtexturepool_t *R_AllocTexturePool(void)
+{
+       gltexturepool_t *pool;
+       if (texturemempool == NULL)
+               return NULL;
+       pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
+       if (pool == NULL)
+               return NULL;
+       pool->next = gltexturepoolchain;
+       gltexturepoolchain = pool;
+       pool->sentinel = TEXTUREPOOL_SENTINEL;
+       return (rtexturepool_t *)pool;
+}
+
+void R_FreeTexturePool(rtexturepool_t **rtexturepool)
+{
+       gltexturepool_t *pool, **poolpointer;
+       if (rtexturepool == NULL)
+               return;
+       if (*rtexturepool == NULL)
+               return;
+       pool = (gltexturepool_t *)(*rtexturepool);
+       *rtexturepool = NULL;
+       if (pool->sentinel != TEXTUREPOOL_SENTINEL)
+               Host_Error("R_FreeTexturePool: pool already freed\n");
+       for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
+       if (*poolpointer == pool)
+               *poolpointer = pool->next;
+       else
+               Host_Error("R_FreeTexturePool: pool not linked\n");
+       while (pool->gltchain)
+               R_FreeTexture((rtexture_t *)pool->gltchain);
+       if (pool->imagechain)
+               Con_Printf("R_FreeTexturePool: not all images freed\n");
+       Mem_Free(pool);
 }
 
-typedef struct
+
+typedef struct glmode_s
 {
        char *name;
-       int     minimize, maximize;
-} glmode_t;
+       int minification, magnification;
+}
+glmode_t;
 
-glmode_t modes[] =
+static glmode_t modes[] =
 {
        {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
        {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
@@ -69,598 +305,966 @@ glmode_t modes[] =
        {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
 };
 
-/*
-===============
-Draw_TextureMode_f
-===============
-*/
-void Draw_TextureMode_f (void)
+static void GL_TextureMode_f (void)
 {
-       int             i;
-       gltexture_t     *glt;
+       int i;
+       GLint oldbindtexnum;
+       gltextureimage_t *image;
+       gltexturepool_t *pool;
 
        if (Cmd_Argc() == 1)
        {
-               for (i=0 ; i< 6 ; i++)
-                       if (gl_filter_min == modes[i].minimize)
+               for (i = 0;i < 6;i++)
+               {
+                       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) ) )
+       for (i = 0;i < 6;i++)
+               if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
                        break;
-       }
        if (i == 6)
        {
-               Con_Print("bad filter name\n");
+               Con_Print("bad filter name\n");
                return;
        }
 
-       gl_filter_min = modes[i].minimize;
-       gl_filter_max = modes[i].maximize;
+       gl_filter_min = modes[i].minification;
+       gl_filter_mag = modes[i].magnification;
 
-       if (!r_upload.value)
-               return;
        // change all the existing mipmap texture objects
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
+       // FIXME: force renderer(/client/something?) restart instead?
+       for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
-               if (glt->flags & TEXF_MIPMAP)
+               for (image = pool->imagechain;image;image = image->imagechain)
                {
-                       glBindTexture(GL_TEXTURE_2D, glt->texnum);
-                       glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-                       glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+                       // only update already uploaded images
+                       if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
+                       {
+                               qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
+                               qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
+                               if (image->flags & TEXF_MIPMAP)
+                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
+                               else
+                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
+                               qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
+                               qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                       }
                }
        }
 }
 
-void GL_TextureStats_Print(char *name, int total, int total2, int loaded, int crc, int mip, int alpha, int total2valid)
+static int R_CalcTexelDataSize (gltexture_t *glt)
 {
-       if (!name[0])
-               name = "<unnamed>";
-       Con_Printf("%5iK %c%5iK%c %04X %s %s %s %s\n", total, total2valid ? ' ' : '(', total2, total2valid ? ' ' : ')', crc, loaded ? "loaded" : "      ", mip ? "mip" : "   ", alpha ? "alpha" : "     ", name);
+       int width2, height2, depth2, size, picmip;
+       if (glt->flags & TEXF_FRAGMENT)
+               size = glt->width * glt->height * glt->depth;
+       else
+       {
+               picmip = 0;
+               if (glt->flags & TEXF_PICMIP)
+                       picmip = gl_picmip.integer;
+               if (gl_max_size.integer > realmaxsize)
+                       Cvar_SetValue("gl_max_size", realmaxsize);
+               // calculate final size
+               for (width2 = 1;width2 < glt->width;width2 <<= 1);
+               for (height2 = 1;height2 < glt->height;height2 <<= 1);
+               for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
+               for (width2 >>= picmip;width2 > gl_max_size.integer;width2 >>= 1);
+               for (height2 >>= picmip;height2 > gl_max_size.integer;height2 >>= 1);
+               for (depth2 >>= picmip;depth2 > gl_max_size.integer;depth2 >>= 1);
+               if (width2 < 1) width2 = 1;
+               if (height2 < 1) height2 = 1;
+               if (depth2 < 1) depth2 = 1;
+
+               size = 0;
+               if (glt->flags & TEXF_MIPMAP)
+               {
+                       while (width2 > 1 || height2 > 1 || depth2 > 1)
+                       {
+                               size += width2 * height2 * depth2;
+                               if (width2 > 1)
+                                       width2 >>= 1;
+                               if (height2 > 1)
+                                       height2 >>= 1;
+                               if (depth2 > 1)
+                                       depth2 >>= 1;
+                       }
+                       size++; // count the last 1x1 mipmap
+               }
+               else
+                       size = width2 * height2 * depth2;
+       }
+       size *= glt->textype->internalbytesperpixel * glt->image->sides;
+
+       return size;
 }
 
-void GL_TextureStats_PrintTotal(void)
+void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 {
-       int i, t = 0, p = 0, loaded = 0, loadedt = 0, loadedp = 0;
+       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;
-       for (i = 0, glt = gltextures;i < numgltextures;i++, glt++)
+       gltexturepool_t *pool;
+       if (printeach)
+               Con_Print("glsize input loaded mip alpha name\n");
+       for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
-               t += glt->texeldatasize;
-               p += glt->inputtexeldatasize;
-               if (glt->internalflags & GLTEXF_UPLOADED)
+               pooltotal = 0;
+               pooltotalt = 0;
+               pooltotalp = 0;
+               poolloaded = 0;
+               poolloadedt = 0;
+               poolloadedp = 0;
+               for (glt = pool->gltchain;glt;glt = glt->chain)
                {
-                       loaded++;
-                       loadedt += glt->texeldatasize;
-                       loadedp += glt->inputtexeldatasize;
+                       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);
                }
+               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;
        }
-       Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", numgltextures, t / 1048576.0, p / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, numgltextures - loaded, (t - loadedt) / 1048576.0, (p - loadedp) / 1048576.0);
+       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);
 }
 
-void GL_TextureStats_f(void)
+static void R_TextureStats_f(void)
 {
-       int i;
-       gltexture_t *glt;
-       Con_Printf("kbytes original crc  loaded mip alpha name\n");
-       for (i = 0, glt = gltextures;i < numgltextures;i++, glt++)
-               GL_TextureStats_Print(glt->identifier, (glt->texeldatasize + 1023) / 1024, (glt->inputtexeldatasize + 1023) / 1024, glt->internalflags & GLTEXF_UPLOADED, glt->crc, glt->flags & TEXF_MIPMAP, glt->flags & TEXF_ALPHA, glt->inputtexels != NULL);
-       GL_TextureStats_PrintTotal();
+       R_TextureStats_Print(true, true, true);
 }
 
-char engineversion[40];
+static void r_textures_start(void)
+{
+       // deal with size limits of various drivers (3dfx in particular)
+       qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
+       CHECKGLERROR
+       // LordHavoc: allow any alignment
+       qglPixelStorei(GL_UNPACK_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 < gl_max_scrapsize.integer;block_size <<= 1);
+
+       texturemempool = Mem_AllocPool("texture management", 0, NULL);
+
+       // Disable JPEG screenshots if the DLL isn't loaded
+       if (! JPEG_OpenLibrary ())
+               Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
+}
 
-//void GL_UploadTexture (gltexture_t *glt);
-void r_textures_start()
+static void r_textures_shutdown(void)
 {
-//     int i;
-//     gltexture_t *glt;
-//     for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
-//             GL_UploadTexture(glt);
+       rtexturepool_t *temp;
+
+       JPEG_CloseLibrary ();
+
+       while(gltexturepoolchain)
+       {
+               temp = (rtexturepool_t *) gltexturepoolchain;
+               R_FreeTexturePool(&temp);
+       }
+
+       resizebuffersize = 0;
+       texturebuffersize = 0;
+       resizebuffer = NULL;
+       colorconvertbuffer = NULL;
+       texturebuffer = NULL;
+       Mem_FreePool(&texturemempool);
 }
 
-void r_textures_shutdown()
+static void r_textures_newmap(void)
 {
 }
 
 void R_Textures_Init (void)
 {
-       Cmd_AddCommand("r_texturestats", GL_TextureStats_f);
-       Cvar_RegisterVariable (&r_max_size);
-       Cvar_RegisterVariable (&r_picmip);
+       Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
+       Cmd_AddCommand("r_texturestats", R_TextureStats_f);
+       Cvar_RegisterVariable (&gl_max_scrapsize);
+       Cvar_RegisterVariable (&gl_max_size);
+       Cvar_RegisterVariable (&gl_picmip);
        Cvar_RegisterVariable (&r_lerpimages);
-       Cvar_RegisterVariable (&r_upload);
        Cvar_RegisterVariable (&r_precachetextures);
-#ifdef NORENDER
-       r_upload.value = 0;
-#endif
+       Cvar_RegisterVariable (&gl_texture_anisotropy);
 
-       // 3dfx can only handle 256 wide textures
-       if (!Q_strncasecmp ((char *)gl_renderer, "3dfx",4) || strstr((char *)gl_renderer, "Glide"))
-               Cvar_Set ("r_max_size", "256");
-
-       gltextures = qmalloc(sizeof(gltexture_t) * MAX_GLTEXTURES);
-       memset(gltextures, 0, sizeof(gltexture_t) * MAX_GLTEXTURES);
-       Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f);
-
-       R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown);
+       R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 }
 
-/*
-================
-R_FindTexture
-================
-*/
-int R_FindTexture (char *identifier)
+void R_Textures_Frame (void)
 {
-       int             i;
-       gltexture_t     *glt;
+       static int old_aniso = 0;
+
+       // could do procedural texture animation here, if we keep track of which
+       // textures were accessed this frame...
+
+       // free the resize buffers
+       resizebuffersize = 0;
+       if (resizebuffer)
+       {
+               Mem_Free(resizebuffer);
+               resizebuffer = NULL;
+       }
+       if (colorconvertbuffer)
+       {
+               Mem_Free(colorconvertbuffer);
+               colorconvertbuffer = NULL;
+       }
 
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
+       if (old_aniso != gl_texture_anisotropy.integer)
        {
-               if (!strcmp (identifier, glt->identifier))
-                       return gltextures[i].texnum;
+               gltextureimage_t *image;
+               gltexturepool_t *pool;
+               GLint oldbindtexnum;
+
+               old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
+
+               Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
+
+               for (pool = gltexturepoolchain;pool;pool = pool->next)
+               {
+                       for (image = pool->imagechain;image;image = image->imagechain)
+                       {
+                               // only update already uploaded images
+                               if (!(image->flags & GLTEXF_UPLOAD) && (image->flags & TEXF_MIPMAP))
+                               {
+                                       qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
+
+                                       qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
+                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
+
+                                       qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                               }
+                       }
+               }
        }
+}
 
-       return -1;
+void R_MakeResizeBufferBigger(int size)
+{
+       if (resizebuffersize < size)
+       {
+               resizebuffersize = size;
+               if (resizebuffer)
+                       Mem_Free(resizebuffer);
+               if (colorconvertbuffer)
+                       Mem_Free(colorconvertbuffer);
+               resizebuffer = (qbyte *)Mem_Alloc(texturemempool, resizebuffersize);
+               colorconvertbuffer = (qbyte *)Mem_Alloc(texturemempool, resizebuffersize);
+               if (!resizebuffer || !colorconvertbuffer)
+                       Host_Error("R_Upload: out of memory\n");
+       }
 }
 
-void R_ResampleTextureLerpLine (byte *in, byte *out, int inwidth, int outwidth)
+static void GL_SetupTextureParameters(int flags, int texturetype)
 {
-       int             j, xi, oldx = 0, f, fstep, l1, l2, endx;
-       fstep = (int) (inwidth*65536.0f/outwidth);
-       endx = (inwidth-1);
-       for (j = 0,f = 0;j < outwidth;j++, f += fstep)
+       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))
        {
-               xi = (int) f >> 16;
-               if (xi != oldx)
+               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
+       }
+       qglTexParameteri(textureenum, GL_TEXTURE_WRAP_S, wrapmode);CHECKGLERROR
+       qglTexParameteri(textureenum, GL_TEXTURE_WRAP_T, wrapmode);CHECKGLERROR
+       if (gltexturetypedimensions[texturetype] >= 3)
+       {
+               qglTexParameteri(textureenum, GL_TEXTURE_WRAP_R, wrapmode);CHECKGLERROR
+       }
+
+       CHECKGLERROR
+       if (flags & TEXF_FORCENEAREST)
+       {
+               if (flags & TEXF_MIPMAP)
                {
-                       in += (xi - oldx) * 4;
-                       oldx = xi;
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
                }
-               if (xi < endx)
+               else
                {
-                       l2 = f & 0xFFFF;
-                       l1 = 0x10000 - l2;
-                       *out++ = (byte) ((in[0] * l1 + in[4] * l2) >> 16);
-                       *out++ = (byte) ((in[1] * l1 + in[5] * l2) >> 16);
-                       *out++ = (byte) ((in[2] * l1 + in[6] * l2) >> 16);
-                       *out++ = (byte) ((in[3] * l1 + in[7] * l2) >> 16);
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
                }
-               else // last pixel of the line has no pixel to lerp to
+               qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
+       }
+       else if (flags & TEXF_FORCELINEAR)
+       {
+               if (flags & TEXF_MIPMAP)
                {
-                       *out++ = in[0];
-                       *out++ = in[1];
-                       *out++ = in[2];
-                       *out++ = in[3];
+                       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
+                       }
                }
+               else
+               {
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
+               }
+               qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
        }
+       else
+       {
+               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
 }
 
-/*
-================
-R_ResampleTexture
-================
-*/
-void R_ResampleTexture (void *indata, int inwidth, int inheight, void *outdata,  int outwidth, int outheight)
+static void R_Upload(gltexture_t *glt, qbyte *data)
 {
-       if (r_lerpimages.value)
-       {
-               int             i, j, yi, oldy, f, fstep, l1, l2, endy = (inheight-1);
-               byte    *inrow, *out, *row1, *row2;
-               out = outdata;
-               fstep = (int) (inheight*65536.0f/outheight);
+       int i, mip, width, height, depth;
+       GLint oldbindtexnum;
+       qbyte *prevbuffer;
+       prevbuffer = data;
+
+       CHECKGLERROR
+
+       glt->texnum = glt->image->texnum;
+       // we need to restore the texture binding after finishing the upload
+       qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
+       qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
+       CHECKGLERROR
+       glt->flags &= ~GLTEXF_UPLOAD;
 
-               row1 = qmalloc(outwidth*4);
-               row2 = qmalloc(outwidth*4);
-               inrow = indata;
-               oldy = 0;
-               R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth);
-               R_ResampleTextureLerpLine (inrow + inwidth*4, row2, inwidth, outwidth);
-               for (i = 0, f = 0;i < outheight;i++,f += fstep)
+       if (glt->flags & TEXF_FRAGMENT)
+       {
+               if (glt->image->flags & GLTEXF_UPLOAD)
                {
-                       yi = f >> 16;
-                       if (yi != oldy)
-                       {
-                               inrow = (byte *)indata + inwidth*4*yi;
-                               if (yi == oldy+1)
-                                       memcpy(row1, row2, outwidth*4);
-                               else
-                                       R_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth);
-                               if (yi < endy)
-                                       R_ResampleTextureLerpLine (inrow + inwidth*4, row2, inwidth, outwidth);
-                               else
-                                       memcpy(row2, row1, outwidth*4);
-                               oldy = yi;
-                       }
-                       if (yi < endy)
+                       glt->image->flags &= ~GLTEXF_UPLOAD;
+                       Con_DPrint("uploaded new fragments image\n");
+                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
+                       memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
+                       switch(glt->image->texturetype)
                        {
-                               l2 = f & 0xFFFF;
-                               l1 = 0x10000 - l2;
-                               for (j = 0;j < outwidth;j++)
-                               {
-                                       *out++ = (byte) ((*row1++ * l1 + *row2++ * l2) >> 16);
-                                       *out++ = (byte) ((*row1++ * l1 + *row2++ * l2) >> 16);
-                                       *out++ = (byte) ((*row1++ * l1 + *row2++ * l2) >> 16);
-                                       *out++ = (byte) ((*row1++ * l1 + *row2++ * l2) >> 16);
-                               }
-                               row1 -= outwidth*4;
-                               row2 -= outwidth*4;
-                       }
-                       else // last line has no pixels to lerp to
-                       {
-                               for (j = 0;j < outwidth;j++)
-                               {
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
-                               }
-                               row1 -= outwidth*4;
+                       case GLTEXTURETYPE_1D:
+                               qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
+                               CHECKGLERROR
+                               break;
+                       case GLTEXTURETYPE_2D:
+                               qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
+                               CHECKGLERROR
+                               break;
+                       case GLTEXTURETYPE_3D:
+                               qglTexImage3D(GL_TEXTURE_3D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
+                               CHECKGLERROR
+                               break;
+                       default:
+                               Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
+                               break;
                        }
+                       GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
+               }
+
+               if (prevbuffer == NULL)
+               {
+                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
+                       memset(resizebuffer, 0, glt->width * glt->height * glt->image->depth * glt->image->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
+                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
+                       Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
+                       prevbuffer = colorconvertbuffer;
+               }
+
+               switch(glt->image->texturetype)
+               {
+               case GLTEXTURETYPE_1D:
+                       qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       CHECKGLERROR
+                       break;
+               case GLTEXTURETYPE_2D:
+                       qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       CHECKGLERROR
+                       break;
+               case GLTEXTURETYPE_3D:
+                       qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       CHECKGLERROR
+                       break;
+               default:
+                       Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
+                       break;
                }
-               qfree(row1);
-               qfree(row2);
        }
        else
        {
-               int             i, j;
-               unsigned        frac, fracstep;
-               byte    *inrow, *out, *inpix;
-               out = outdata;
+               glt->image->flags &= ~GLTEXF_UPLOAD;
+
+               // 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);
+               for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
 
-               fracstep = inwidth*0x10000/outwidth;
-               for (i=0 ; i<outheight ; i++)
+               R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
+
+               if (prevbuffer == NULL)
                {
-                       inrow = (byte *)indata + inwidth*(i*inheight/outheight)*4;
-                       frac = fracstep >> 1;
-                       for (j=0 ; j<outwidth ; j+=4)
+                       width = glt->image->width;
+                       height = glt->image->height;
+                       depth = glt->image->depth;
+                       memset(resizebuffer, 0, width * height * depth * glt->image->bytesperpixel);
+                       prevbuffer = resizebuffer;
+               }
+               else
+               {
+                       if (glt->textype->textype == TEXTYPE_PALETTE)
                        {
-                               inpix = inrow + ((frac >> 14) & ~3);*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ =       *inpix++ ;frac += fracstep;
-                               inpix = inrow + ((frac >> 14) & ~3);*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ =       *inpix++ ;frac += fracstep;
-                               inpix = inrow + ((frac >> 14) & ~3);*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ =       *inpix++ ;frac += fracstep;
-                               inpix = inrow + ((frac >> 14) & ~3);*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ = qgamma[*inpix++];*out++ =       *inpix++ ;frac += fracstep;
+                               // 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 * glt->depth * glt->image->sides, glt->palette);
+                               prevbuffer = colorconvertbuffer;
                        }
                }
-       }
-}
 
-// in can be the same as out
-void GL_MipReduce(byte *in, byte *out, int width, int height, int destwidth, int destheight)
-{
-       int x, y, width2, height2, nextrow;
-       if (width > destwidth)
-       {
-               if (height > destheight)
+               // cubemaps contain multiple images and thus get processed a bit differently
+               if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
                {
-                       // reduce both
-                       width2 = width >> 1;
-                       height2 = height >> 1;
-                       nextrow = width << 2;
-                       for (y = 0;y < height2;y++)
+                       if (glt->width != width || glt->height != height || glt->depth != depth)
                        {
-                               for (x = 0;x < width2;x++)
-                               {
-                                       out[0] = (byte) ((in[0] + in[4] + in[nextrow  ] + in[nextrow+4]) >> 2);
-                                       out[1] = (byte) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
-                                       out[2] = (byte) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
-                                       out[3] = (byte) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
-                                       out += 4;
-                                       in += 8;
-                               }
-                               in += nextrow; // skip a line
+                               Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
+                               prevbuffer = resizebuffer;
+                       }
+                       // picmip/max_size
+                       while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
+                       {
+                               Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
+                               prevbuffer = resizebuffer;
                        }
                }
-               else
+               mip = 0;
+               switch(glt->image->texturetype)
                {
-                       // reduce width
-                       width2 = width >> 1;
-                       for (y = 0;y < height;y++)
+               case GLTEXTURETYPE_1D:
+                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       CHECKGLERROR
+                       if (glt->flags & TEXF_MIPMAP)
                        {
-                               for (x = 0;x < width2;x++)
+                               while (width > 1 || height > 1 || depth > 1)
                                {
-                                       out[0] = (byte) ((in[0] + in[4]) >> 1);
-                                       out[1] = (byte) ((in[1] + in[5]) >> 1);
-                                       out[2] = (byte) ((in[2] + in[6]) >> 1);
-                                       out[3] = (byte) ((in[3] + in[7]) >> 1);
-                                       out += 4;
-                                       in += 8;
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       prevbuffer = resizebuffer;
+                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                       CHECKGLERROR
                                }
                        }
-               }
-       }
-       else
-       {
-               if (height > destheight)
-               {
-                       // reduce height
-                       height2 = height >> 1;
-                       nextrow = width << 2;
-                       for (y = 0;y < height2;y++)
+                       break;
+               case GLTEXTURETYPE_2D:
+                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       CHECKGLERROR
+                       if (glt->flags & TEXF_MIPMAP)
                        {
-                               for (x = 0;x < width;x++)
+                               while (width > 1 || height > 1 || depth > 1)
+                               {
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       prevbuffer = resizebuffer;
+                                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                       CHECKGLERROR
+                               }
+                       }
+                       break;
+               case GLTEXTURETYPE_3D:
+                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->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->image->bytesperpixel);
+                                       prevbuffer = resizebuffer;
+                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->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->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
+                               if (glt->width != width || glt->height != height || glt->depth != depth)
+                               {
+                                       Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
+                                       prevbuffer = resizebuffer;
+                               }
+                               // picmip/max_size
+                               while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
+                               {
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
+                                       prevbuffer = resizebuffer;
+                               }
+                               mip = 0;
+                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                               CHECKGLERROR
+                               if (glt->flags & TEXF_MIPMAP)
                                {
-                                       out[0] = (byte) ((in[0] + in[nextrow  ]) >> 1);
-                                       out[1] = (byte) ((in[1] + in[nextrow+1]) >> 1);
-                                       out[2] = (byte) ((in[2] + in[nextrow+2]) >> 1);
-                                       out[3] = (byte) ((in[3] + in[nextrow+3]) >> 1);
-                                       out += 4;
-                                       in += 4;
+                                       while (width > 1 || height > 1 || depth > 1)
+                                       {
+                                               Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                               prevbuffer = resizebuffer;
+                                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                               CHECKGLERROR
+                                       }
                                }
-                               in += nextrow; // skip a line
                        }
+                       break;
                }
-               else
-                       Sys_Error("GL_MipReduce: desired size already achieved\n");
+               GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
        }
+       qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
 }
 
-void GL_Upload32(int glslot, byte *data, int width, int height, int flags)
+static void R_FindImageForTexture(gltexture_t *glt)
 {
-       int mip, width2, height2, width3, height3, internalformat;
-       byte *gammadata, *buffer;
-
-       if (!r_upload.value)
-               return;
-
-       // 3 and 4 are converted by the driver to it's preferred format for the current display mode
-       internalformat = 3;
-       if (flags & TEXF_ALPHA)
-               internalformat = 4;
-
-       // calculate power of 2 size
-       width2 = 1;while (width2 < width) width2 <<= 1;
-       height2 = 1;while (height2 < height) height2 <<= 1;
-       // calculate final size (mipmapped downward to this)
-       width3 = width2 >> (int) r_picmip.value;
-       height3 = height2 >> (int) r_picmip.value;
-       while (width3 > (int) r_max_size.value) width3 >>= 1;
-       while (height3 > (int) r_max_size.value) height3 >>= 1;
-       if (width3 < 1) width3 = 1;
-       if (height3 < 1) height3 = 1;
-
-       gammadata = qmalloc(width*height*4);
-       buffer = qmalloc(width2*height2*4);
-       if (!gammadata || !buffer)
-               Host_Error("GL_Upload32: out of memory\n");
-
-       Image_CopyRGBAGamma(data, gammadata, width*height);
-
-       R_ResampleTexture(gammadata, width, height, buffer, width2, height2);
-
-       qfree(gammadata);
-
-       while (width2 > width3 || height2 > height3)
-       {
-               GL_MipReduce(buffer, buffer, width2, height2, width3, height3);
-
-               if (width2 > width3)
-                       width2 >>= 1;
-               if (height2 > height3)
-                       height2 >>= 1;
-       }
-
-       glBindTexture(GL_TEXTURE_2D, glslot);
-       mip = 0;
-       glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width2, height2, 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
-       if (flags & TEXF_MIPMAP)
+       int i, j, best, best2, x, y, z, w, h, d, picmip;
+       textypeinfo_t *texinfo;
+       gltexturepool_t *pool;
+       gltextureimage_t *image, **imagechainpointer;
+       texinfo = glt->textype;
+       pool = glt->pool;
+
+       // remains -1 until uploaded
+       glt->texnum = -1;
+
+       x = 0;
+       y = 0;
+       z = 0;
+       w = glt->width;
+       h = glt->height;
+       d = glt->depth;
+       if (glt->flags & TEXF_FRAGMENT)
        {
-               while (width2 > 1 || height2 > 1)
+               for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
                {
-                       GL_MipReduce(buffer, buffer, width2, height2, 1, 1);
+                       image = *imagechainpointer;
+                       if (image->type != GLIMAGETYPE_FRAGMENTS)
+                               continue;
+                       if (image->texturetype != glt->texturetype)
+                               continue;
+                       if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR))
+                               continue;
+                       if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
+                               continue;
+                       if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
+                               continue;
+
+                       // got a fragments texture, find a place in it if we can
+                       for (best = image->width, i = 0;i < image->width - w;i++)
+                       {
+                               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 > image->height)
+                               continue;
 
-                       if (width2 > 1)
-                               width2 >>= 1;
-                       if (height2 > 1)
-                               height2 >>= 1;
+                       for (i = 0;i < w;i++)
+                               image->blockallocation[x + i] = best + h;
 
-                       glTexImage2D(GL_TEXTURE_2D, mip++, internalformat, width2, height2, 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+                       glt->x = x;
+                       glt->y = y;
+                       glt->z = 0;
+                       glt->image = image;
+                       image->texturecount++;
+                       return;
                }
 
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+               image = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
+               if (image == NULL)
+               {
+                       Con_Printf ("R_FindImageForTexture: ran out of memory\n");
+                       return;
+               }
+               image->type = GLIMAGETYPE_FRAGMENTS;
+               // make sure the created image is big enough for the fragment
+               for (image->width = block_size;image->width < glt->width;image->width <<= 1);
+               image->height = 1;
+               if (gltexturetypedimensions[glt->texturetype] >= 2)
+                       for (image->height = block_size;image->height < glt->height;image->height <<= 1);
+               image->depth = 1;
+               if (gltexturetypedimensions[glt->texturetype] >= 3)
+                       for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
+               image->blockallocation = (short int *)Mem_Alloc(texturemempool, image->width * sizeof(short));
+               memset(image->blockallocation, 0, image->width * sizeof(short));
+
+               x = 0;
+               y = 0;
+               z = 0;
+               for (i = 0;i < w;i++)
+                       image->blockallocation[x + i] = y + h;
        }
        else
        {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
-       }
-       glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+               for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
 
-       qfree(buffer);
-}
-
-void GL_Upload8 (int glslot, byte *data, int width, int height, int flags)
-{
-       byte *data32;
-       data32 = qmalloc(width*height*4);
-       Image_Copy8bitRGBA(data, data32, width*height, d_8to24table);
-       GL_Upload32(glslot, data32, width, height, flags);
-       qfree(data32);
-}
-
-void GL_UploadTexture (gltexture_t *glt)
-{
-       if (glt->inputtexels == NULL)
-               return;
-       if (glt->flags & TEXF_RGBA)
-               GL_Upload32(glt->texnum, glt->inputtexels, glt->width, glt->height, glt->flags);
-       else // 8bit
-               GL_Upload8(glt->texnum, glt->inputtexels, glt->width, glt->height, glt->flags);
-       glt->internalflags |= GLTEXF_UPLOADED;
-       qfree(glt->inputtexels);
-       glt->inputtexels = NULL;
-}
-
-int R_CalcTexelDataSize (int width, int height, int mipmapped)
-{
-       int width2, height2, size;
-       width2 = 1;while (width2 < width) width2 <<= 1;
-       height2 = 1;while (height2 < height) height2 <<= 1;
-       // calculate final size (mipmapped downward to this)
-       width2 >>= (int) r_picmip.value;
-       height2 >>= (int) r_picmip.value;
-       while (width2 > (int) r_max_size.value) width2 >>= 1;
-       while (height2 > (int) r_max_size.value) height2 >>= 1;
-       if (width2 < 1) width2 = 1;
-       if (height2 < 1) height2 = 1;
-
-       size = 0;
-       if (mipmapped)
-       {
-               while (width2 > 1 || height2 > 1)
+               image = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
+               if (image == NULL)
                {
-                       size += width2 * height2;
-                       if (width2 > 1)
-                               width2 >>= 1;
-                       if (height2 > 1)
-                               height2 >>= 1;
+                       Con_Printf ("R_FindImageForTexture: ran out of memory\n");
+                       return;
                }
-               size++; // count the last 1x1 mipmap
+               image->type = GLIMAGETYPE_TILE;
+               image->blockallocation = NULL;
+
+               picmip = 0;
+               if (glt->flags & TEXF_PICMIP)
+                       picmip = gl_picmip.integer;
+               // calculate final size
+               if (gl_max_size.integer > realmaxsize)
+                       Cvar_SetValue("gl_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->depth = 1;image->depth < glt->depth;image->depth <<= 1);
+               for (image->width >>= picmip;image->width > gl_max_size.integer;image->width >>= 1);
+               for (image->height >>= picmip;image->height > gl_max_size.integer;image->height >>= 1);
+               for (image->depth >>= picmip;image->depth > gl_max_size.integer;image->depth >>= 1);
+               if (image->width < 1) image->width = 1;
+               if (image->height < 1) image->height = 1;
+               if (image->depth < 1) image->depth = 1;
        }
-       else
-               size = width2*height2;
+       image->texturetype = glt->texturetype;
+       image->glinternalformat = texinfo->glinternalformat;
+       image->glformat = texinfo->glformat;
+       image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_PICMIP | TEXF_FORCENEAREST | TEXF_FORCELINEAR)) | GLTEXF_UPLOAD;
+       image->bytesperpixel = texinfo->internalbytesperpixel;
+       image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
+       // get a texture number to use
+       qglGenTextures(1, (GLuint *)&image->texnum);
+       *imagechainpointer = image;
+       image->texturecount++;
+
+       glt->x = x;
+       glt->y = y;
+       glt->z = z;
+       glt->image = image;
+}
 
-       size *= 4; // RGBA
+// note: R_FindImageForTexture must be called before this
+static void R_UploadTexture (gltexture_t *glt)
+{
+       if (!(glt->flags & GLTEXF_UPLOAD))
+               return;
 
-       return size;
+       R_Upload(glt, glt->inputtexels);
+       if (glt->inputtexels)
+       {
+               Mem_Free(glt->inputtexels);
+               glt->inputtexels = NULL;
+               glt->flags |= GLTEXF_DESTROYED;
+       }
+       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);
 }
 
-/*
-================
-GL_LoadTexture
-================
-*/
-rtexture_t *R_LoadTexture (char *identifier, int width, int height, byte *data, 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 qbyte *data, const unsigned int *palette)
 {
-       int                             i, bytesperpixel, internalflags, precache;
-       gltexture_t             *glt;
-       unsigned short  crc;
+       int i, size;
+       gltexture_t *glt;
+       gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
+       textypeinfo_t *texinfo;
 
-       if (isDedicated)
+       if (cls.state == ca_dedicated)
                return NULL;
 
-       if (!identifier[0])
-               Host_Error("R_LoadTexture: no identifier\n");
+       if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
+       {
+               Con_Printf ("R_LoadTexture: only 2D fragment textures implemented\n");
+               return NULL;
+       }
+       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;
+       }
+
+       texinfo = R_GetTexTypeInfo(textype, flags);
+       size = width * height * depth * sides * texinfo->inputbytesperpixel;
+       if (size < 1)
+       {
+               Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
+               return NULL;
+       }
 
        // clear the alpha flag if the texture has no transparent pixels
-       if (flags & TEXF_ALPHA)
+       switch(textype)
        {
-               int alpha = false;
-               if (flags & TEXF_RGBA)
+       case TEXTYPE_PALETTE:
+               if (flags & TEXF_ALPHA)
                {
-                       for (i = 0;i < width * height;i++)
+                       flags &= ~TEXF_ALPHA;
+                       if (data)
                        {
-                               if (data[i * 4 + 3] < 255)
+                               for (i = 0;i < size;i++)
                                {
-                                       alpha = true;
-                                       break;
+                                       if (((qbyte *)&palette[data[i]])[3] < 255)
+                                       {
+                                               flags |= TEXF_ALPHA;
+                                               break;
+                                       }
                                }
                        }
                }
-               else
+               break;
+       case TEXTYPE_RGB:
+               if (flags & TEXF_ALPHA)
+                       Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
+               break;
+       case TEXTYPE_RGBA:
+               if (flags & TEXF_ALPHA)
                {
-                       for (i = 0;i < width * height;i++)
+                       flags &= ~TEXF_ALPHA;
+                       if (data)
                        {
-                               if (data[i] == 255)
+                               for (i = 3;i < size;i += 4)
                                {
-                                       alpha = true;
-                                       break;
+                                       if (data[i] < 255)
+                                       {
+                                               flags |= TEXF_ALPHA;
+                                               break;
+                                       }
                                }
                        }
                }
-               if (!alpha)
-                       flags &= ~TEXF_ALPHA;
+               break;
+       case TEXTYPE_DSDT:
+               break;
+       default:
+               Host_Error("R_LoadTexture: unknown texture type\n");
        }
 
-       if (flags & TEXF_RGBA)
-               bytesperpixel = 4;
+       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->width = width;
+       glt->height = height;
+       glt->depth = depth;
+       glt->flags = flags | GLTEXF_UPLOAD;
+       glt->textype = texinfo;
+       glt->texturetype = texturetype;
+       glt->inputdatasize = size;
+       glt->palette = palette;
+
+       if (data)
+       {
+               glt->inputtexels = (qbyte *)Mem_Alloc(texturemempool, size);
+               if (glt->inputtexels == NULL)
+                       Con_Printf ("R_LoadTexture: out of memory\n");
+               else
+                       memcpy(glt->inputtexels, data, size);
+       }
        else
-               bytesperpixel = 1;
+               glt->inputtexels = NULL;
+
+       R_FindImageForTexture(glt);
+       R_PrecacheTexture(glt);
+
+       return (rtexture_t *)glt;
+}
 
-       internalflags = 0;
-       if (r_lerpimages.value != 0)
-               internalflags |= GLTEXF_LERPED;
+rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
+}
+
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
+}
 
-       // LordHavoc: do a CRC to confirm the data really is the same as previous occurances.
-       crc = CRC_Block(data, width*height*bytesperpixel);
-       // see if the texture is already present
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
+rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
+}
+
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
+}
+
+int R_TextureHasAlpha(rtexture_t *rt)
+{
+       return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
+}
+
+int R_TextureWidth(rtexture_t *rt)
+{
+       return rt ? ((gltexture_t *)rt)->width : 0;
+}
+
+int R_TextureHeight(rtexture_t *rt)
+{
+       return rt ? ((gltexture_t *)rt)->height : 0;
+}
+
+void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
+{
+       gltexture_t *glt;
+       float iwidth, iheight, idepth;
+       if (cls.state == ca_dedicated)
        {
-               if (!strcmp (identifier, glt->identifier))
+               if (x)
+                       *x = 0;
+               if (y)
+                       *y = 0;
+               if (z)
+                       *z = 0;
+               if (fx1 || fy1 || fx2 || fy2)
                {
-                       // LordHavoc: everyone hates cache mismatchs, so I fixed it
-                       if (crc != glt->crc || width != glt->width || height != glt->height || flags != glt->flags)
-                       {
-                               Con_DPrintf("GL_LoadTexture: cache mismatch, replacing old texture\n");
-                               goto GL_LoadTexture_setup; // drop out with glt pointing to the texture to replace
-                       }
-                       if (internalflags != glt->internalflags)
-                               goto GL_LoadTexture_setup; // drop out with glt pointing to the texture to replace
-                       return (rtexture_t *)glt;
+                       if (fx1)
+                               *fx1 = 0;
+                       if (fy1)
+                               *fy1 = 0;
+                       if (fz1)
+                               *fz1 = 0;
+                       if (fx2)
+                               *fx2 = 1;
+                       if (fy2)
+                               *fy2 = 1;
+                       if (fz2)
+                               *fz2 = 1;
                }
+               return;
        }
-
-/*
-       if (freeglt)
+       if (!rt)
+               Host_Error("R_FragmentLocation: no texture supplied\n");
+       glt = (gltexture_t *)rt;
+       if (glt->flags & TEXF_FRAGMENT)
        {
-               glt = freeglt;
-               strcpy (glt->identifier, identifier);
+               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;
+                       idepth = 1.0f / glt->image->depth;
+                       if (fx1)
+                               *fx1 = glt->x * iwidth;
+                       if (fy1)
+                               *fy1 = glt->y * iheight;
+                       if (fz1)
+                               *fz1 = glt->z * idepth;
+                       if (fx2)
+                               *fx2 = (glt->x + glt->width) * iwidth;
+                       if (fy2)
+                               *fy2 = (glt->y + glt->height) * iheight;
+                       if (fz2)
+                               *fz2 = (glt->z + glt->depth) * idepth;
+               }
        }
        else
        {
-*/
-               // LordHavoc: check if there are still slots available
-               if (numgltextures >= MAX_GLTEXTURES)
-                       Sys_Error ("GL_LoadTexture: ran out of texture slots (%d)\n", MAX_GLTEXTURES);
-               glt = &gltextures[numgltextures++];
-               glt->texnum = gl_texture_number++;
-               strcpy (glt->identifier, identifier);
-//     }
-
-// LordHavoc: label to drop out of the loop into the setup code
-GL_LoadTexture_setup:
-       glt->crc = crc; // LordHavoc: used to verify textures are identical
-       glt->width = width;
-       glt->height = height;
-       glt->flags = flags;
-       glt->internalflags = internalflags;
-
-       if (glt->inputtexels)
-               qfree(glt->inputtexels);
-       glt->inputtexeldatasize = width*height*bytesperpixel;
-       glt->inputtexels = qmalloc(glt->inputtexeldatasize);
-
-       memcpy(glt->inputtexels, data, glt->inputtexeldatasize);
-
-       glt->texeldatasize = R_CalcTexelDataSize(width, height, flags & TEXF_MIPMAP);
-
-       precache = false;
-       if (r_precachetextures.value >= 1)
-       {
-               if (flags & TEXF_PRECACHE)
-                       precache = true;
-               if (r_precachetextures.value >= 2)
-                       precache = true;
+               if (x)
+                       *x = 0;
+               if (y)
+                       *y = 0;
+               if (z)
+                       *z = 0;
+               if (fx1 || fy1 || fx2 || fy2)
+               {
+                       if (fx1)
+                               *fx1 = 0;
+                       if (fy1)
+                               *fy1 = 0;
+                       if (fz1)
+                               *fz1 = 0;
+                       if (fx2)
+                               *fx2 = 1;
+                       if (fy2)
+                               *fy2 = 1;
+                       if (fz2)
+                               *fz2 = 1;
+               }
        }
+}
 
-       if (precache)
-               GL_UploadTexture(glt);
+void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
+{
+       R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
+}
 
-       return (rtexture_t *)glt;
+int R_CompatibleFragmentWidth(int width, int textype, int flags)
+{
+       return width;
 }
 
-// only used for lightmaps
-int R_GetTextureSlots(int count)
+void R_UpdateTexture(rtexture_t *rt, qbyte *data)
 {
-       int i;
-       i = gl_texture_number;
-       gl_texture_number += count;
-       return i;
+       gltexture_t *glt;
+       if (rt == NULL)
+               Host_Error("R_UpdateTexture: no texture supplied\n");
+       if (data == NULL)
+               Host_Error("R_UpdateTexture: no data supplied\n");
+       glt = (gltexture_t *)rt;
+
+       // 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->inputdatasize);
+       else
+               R_Upload(glt, data);
 }
+