]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_textures.c
fix a mingw warning
[xonotic/darkplaces.git] / gl_textures.c
index 345a7414eb656c70e4c0852fc9785125994606b9..d5685c3285ee3d1f06d8c9e932aa843eba797cf7 100644 (file)
+
 #include "quakedef.h"
+#ifdef SUPPORTD3D
+#include <d3d9.h>
+extern LPDIRECT3DDEVICE9 vid_d3d9dev;
+#endif
+#include "image.h"
+#include "jpeg.h"
+#include "image_png.h"
+#include "intoverflow.h"
+
+cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, limited by hardware capabilities (typically 2048, 4096, or 8192)"};
+cvar_t gl_max_lightmapsize = {CVAR_SAVE, "gl_max_lightmapsize", "1024", "maximum allowed texture size for lightmap textures, use larger values to improve rendering speed, as long as there is enough video memory available (setting it too high for the hardware will cause very bad performance)"};
+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 gl_picmip_world = {CVAR_SAVE, "gl_picmip_world", "0", "extra picmip level for world textures (may be negative, which will then reduce gl_picmip for these)"};
+cvar_t r_picmipworld = {CVAR_SAVE, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too (setting this to 0 is a shorthand for gl_picmip_world -9999999)"};
+cvar_t gl_picmip_sprites = {CVAR_SAVE, "gl_picmip_sprites", "0", "extra picmip level for sprite textures (may be negative, which will then reduce gl_picmip for these)"};
+cvar_t r_picmipsprites = {CVAR_SAVE, "r_picmipsprites", "1", "make gl_picmip affect sprites too (saves some graphics memory in sprite heavy games) (setting this to 0 is a shorthand for gl_picmip_sprites -9999999)"};
+cvar_t gl_picmip_other = {CVAR_SAVE, "gl_picmip_other", "0", "extra picmip level for other textures (may be negative, which will then reduce gl_picmip for these)"};
+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 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"};
+cvar_t gl_texturecompression = {CVAR_SAVE, "gl_texturecompression", "0", "whether to compress textures, a value of 0 disables compression (even if the individual cvars are 1), 1 enables fast (low quality) compression at startup, 2 enables slow (high quality) compression at startup"};
+cvar_t gl_texturecompression_color = {CVAR_SAVE, "gl_texturecompression_color", "1", "whether to compress colormap (diffuse) textures"};
+cvar_t gl_texturecompression_normal = {CVAR_SAVE, "gl_texturecompression_normal", "0", "whether to compress normalmap (normalmap) textures"};
+cvar_t gl_texturecompression_gloss = {CVAR_SAVE, "gl_texturecompression_gloss", "1", "whether to compress glossmap (specular) textures"};
+cvar_t gl_texturecompression_glow = {CVAR_SAVE, "gl_texturecompression_glow", "1", "whether to compress glowmap (luma) textures"};
+cvar_t gl_texturecompression_2d = {CVAR_SAVE, "gl_texturecompression_2d", "0", "whether to compress 2d (hud/menu) textures other than the font"};
+cvar_t gl_texturecompression_q3bsplightmaps = {CVAR_SAVE, "gl_texturecompression_q3bsplightmaps", "0", "whether to compress lightmaps in q3bsp format levels"};
+cvar_t gl_texturecompression_q3bspdeluxemaps = {CVAR_SAVE, "gl_texturecompression_q3bspdeluxemaps", "0", "whether to compress deluxemaps in q3bsp format levels (only levels compiled with q3map2 -deluxe have these)"};
+cvar_t gl_texturecompression_sky = {CVAR_SAVE, "gl_texturecompression_sky", "0", "whether to compress sky textures"};
+cvar_t gl_texturecompression_lightcubemaps = {CVAR_SAVE, "gl_texturecompression_lightcubemaps", "1", "whether to compress light cubemaps (spotlights and other light projection images)"};
+cvar_t gl_texturecompression_reflectmask = {CVAR_SAVE, "gl_texturecompression_reflectmask", "1", "whether to compress reflection cubemap masks (mask of which areas of the texture should reflect the generic shiny cubemap)"};
+cvar_t gl_nopartialtextureupdates = {CVAR_SAVE, "gl_nopartialtextureupdates", "1", "use alternate path for dynamic lightmap updates that avoids a possibly slow code path in the driver"};
+
+qboolean       gl_filter_force = false;
+int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
+int            gl_filter_mag = GL_LINEAR;
+
+#ifdef SUPPORTD3D
+int d3d_filter_flatmin = D3DTEXF_LINEAR;
+int d3d_filter_flatmag = D3DTEXF_LINEAR;
+int d3d_filter_flatmix = D3DTEXF_POINT;
+int d3d_filter_mipmin = D3DTEXF_LINEAR;
+int d3d_filter_mipmag = D3DTEXF_LINEAR;
+int d3d_filter_mipmix = D3DTEXF_LINEAR;
+int d3d_filter_nomip = false;
+#endif
 
-cvar_t         gl_max_size = {"gl_max_size", "1024"};
-cvar_t         gl_picmip = {"gl_picmip", "0"};
-cvar_t         gl_lerpimages = {"gl_lerpimages", "1"};
-cvar_t         r_upload = {"r_upload", "1"};
 
-int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; //NEAREST;
-int            gl_filter_max = GL_LINEAR;
+static mempool_t *texturemempool;
+static memexpandablearray_t texturearray;
 
+// note: this must not conflict with TEXF_ flags in r_textures.h
+// bitmask for mismatch checking
+#define GLTEXF_IMPORTANTBITS (0)
+// dynamic texture (treat texnum == 0 differently)
+#define GLTEXF_DYNAMIC         0x00080000
 
-int            texels;
+typedef struct textypeinfo_s
+{
+       textype_t textype;
+       int inputbytesperpixel;
+       int internalbytesperpixel;
+       float glinternalbytesperpixel;
+       int glinternalformat;
+       int glformat;
+       int gltype;
+}
+textypeinfo_t;
+
+
+static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE    , 1, 4, 4.0f, 3                               , GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE    , 1, 4, 4.0f, 4                               , GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA       , 4, 4, 4.0f, 3                               , GL_RGBA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA       , 4, 4, 4.0f, 4                               , GL_RGBA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_rgba_compress          = {TEXTYPE_RGBA       , 4, 4, 0.5f, GL_COMPRESSED_RGB_S3TC_DXT1_EXT , GL_RGBA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_rgba_alpha_compress    = {TEXTYPE_RGBA       , 4, 4, 1.0f, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_bgra                   = {TEXTYPE_BGRA       , 4, 4, 4.0f, 3                               , GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_bgra_alpha             = {TEXTYPE_BGRA       , 4, 4, 4.0f, 4                               , GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_bgra_compress          = {TEXTYPE_BGRA       , 4, 4, 0.5f, GL_COMPRESSED_RGB_S3TC_DXT1_EXT , GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_bgra_alpha_compress    = {TEXTYPE_BGRA       , 4, 4, 1.0f, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_BGRA           , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_shadowmap16            = {TEXTYPE_SHADOWMAP  , 2, 2, 2.0f, GL_DEPTH_COMPONENT16_ARB        , GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT};
+static textypeinfo_t textype_shadowmap24            = {TEXTYPE_SHADOWMAP  , 4, 4, 4.0f, GL_DEPTH_COMPONENT24_ARB        , GL_DEPTH_COMPONENT, GL_UNSIGNED_INT  };
+static textypeinfo_t textype_alpha                  = {TEXTYPE_ALPHA      , 1, 4, 4.0f, GL_ALPHA                        , GL_ALPHA          , GL_UNSIGNED_BYTE };
+static textypeinfo_t textype_dxt1                   = {TEXTYPE_DXT1       , 4, 0, 0.5f, GL_COMPRESSED_RGB_S3TC_DXT1_EXT , 0                 , 0                };
+static textypeinfo_t textype_dxt1a                  = {TEXTYPE_DXT1A      , 4, 0, 0.5f, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0                 , 0                };
+static textypeinfo_t textype_dxt3                   = {TEXTYPE_DXT3       , 4, 0, 1.0f, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0                 , 0                };
+static textypeinfo_t textype_dxt5                   = {TEXTYPE_DXT5       , 4, 0, 1.0f, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0                 , 0                };
+static textypeinfo_t textype_colorbuffer            = {TEXTYPE_COLORBUFFER, 4, 4, 4.0f, 4                               , GL_BGRA           , GL_UNSIGNED_BYTE };
+
+
+typedef enum gltexturetype_e
+{
+       GLTEXTURETYPE_2D,
+       GLTEXTURETYPE_3D,
+       GLTEXTURETYPE_CUBEMAP,
+       GLTEXTURETYPE_RECTANGLE,
+       GLTEXTURETYPE_TOTAL
+}
+gltexturetype_t;
 
-// 4096x4096
-#define MAXMIPS 12
+static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
+static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {2, 3, 2, 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
+};
 
-typedef struct
+typedef struct gltexture_s
 {
-       int             texnum;
-       byte    *texels[MAXMIPS];
-       unsigned short texelsize[MAXMIPS][2];
-       char    identifier[64];
-       short   width, height;
-// LordHavoc: CRC to identify cache mismatchs
-       unsigned short crc;
-       char    mipmap;
-       char    alpha;
-       char    bytesperpixel;
-       char    lerped; // whether this texture was uploaded with or without interpolation
-} gltexture_t;
+       // this portion of the struct is exposed to the R_GetTexture macro for
+       // speed reasons, must be identical in rtexture_t!
+       int texnum; // GL texture slot number
+       qboolean dirty; // indicates that R_RealGetTexture should be called
+       int gltexturetypeenum; // used by R_Mesh_TexBind
+       // d3d stuff the backend needs
+       void *d3dtexture;
+#ifdef SUPPORTD3D
+       int d3dformat;
+       int d3dusage;
+       int d3dpool;
+       int d3daddressu;
+       int d3daddressv;
+       int d3daddressw;
+       int d3dmagfilter;
+       int d3dminfilter;
+       int d3dmipfilter;
+       int d3dmaxmiplevelfilter;
+       int d3dmipmaplodbias;
+       int d3dmaxmiplevel;
+#endif
+
+       // dynamic texture stuff [11/22/2007 Black]
+       updatecallback_t updatecallback;
+       void *updatacallback_data;
+       // --- [11/22/2007 Black]
+
+       // stores backup copy of texture for deferred texture updates (gl_nopartialtextureupdates cvar)
+       unsigned char *bufferpixels;
+       qboolean buffermodified;
+
+       // 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;
+       // name of the texture (this might be removed someday), no duplicates
+       char identifier[MAX_QPATH + 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;
+       // picmip level
+       int miplevel;
+       // 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 vid.support.arb_texture_non_power_of_two is not supported)
+       int tilewidth, tileheight, tiledepth;
+       // 1 or 6 depending on texturetype
+       int sides;
+       // how many mipmap levels in this texture
+       int miplevels;
+       // bytes per pixel
+       int bytesperpixel;
+       // GL_RGB or GL_RGBA or GL_DEPTH_COMPONENT
+       int glformat;
+       // 3 or 4
+       int glinternalformat;
+       // GL_UNSIGNED_BYTE or GL_UNSIGNED_INT or GL_UNSIGNED_SHORT or GL_FLOAT
+       int gltype;
+}
+gltexture_t;
 
-#define        MAX_GLTEXTURES  4096
-gltexture_t    gltextures[MAX_GLTEXTURES];
-int                    numgltextures;
+#define TEXTUREPOOL_SENTINEL 0xC0DEDBAD
 
-typedef struct
+typedef struct gltexturepool_s
 {
-       char *name;
-       int     minimize, maximize;
-} glmode_t;
+       unsigned int sentinel;
+       struct gltexture_s *gltchain;
+       struct gltexturepool_s *next;
+}
+gltexturepool_t;
 
-glmode_t modes[] = {
-       {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
-       {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
-       {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
-       {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
-       {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
-       {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
-};
+static gltexturepool_t *gltexturepoolchain = NULL;
 
-/*
-===============
-Draw_TextureMode_f
-===============
-*/
-void Draw_TextureMode_f (void)
-{
-       int             i;
-       gltexture_t     *glt;
+static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
+static int resizebuffersize = 0;
+static const unsigned char *texturebuffer;
 
-       if (Cmd_Argc() == 1)
+static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
+{
+       switch(textype)
        {
-               for (i=0 ; i< 6 ; i++)
-                       if (gl_filter_min == modes[i].minimize)
-                       {
-                               Con_Printf ("%s\n", modes[i].name);
-                               return;
-                       }
-               Con_Printf ("current filter is unknown???\n");
+       case TEXTYPE_DXT1:
+               return &textype_dxt1;
+       case TEXTYPE_DXT1A:
+               return &textype_dxt1a;
+       case TEXTYPE_DXT3:
+               return &textype_dxt3;
+       case TEXTYPE_DXT5:
+               return &textype_dxt5;
+       case TEXTYPE_PALETTE:
+               return (flags & TEXF_ALPHA) ? &textype_palette_alpha : &textype_palette;
+       case TEXTYPE_RGBA:
+               if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
+                       return (flags & TEXF_ALPHA) ? &textype_rgba_alpha_compress : &textype_rgba_compress;
+               return (flags & TEXF_ALPHA) ? &textype_rgba_alpha : &textype_rgba;
+       case TEXTYPE_BGRA:
+               if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
+                       return (flags & TEXF_ALPHA) ? &textype_bgra_alpha_compress : &textype_bgra_compress;
+               return (flags & TEXF_ALPHA) ? &textype_bgra_alpha : &textype_bgra;
+       case TEXTYPE_ALPHA:
+               return &textype_alpha;
+       case TEXTYPE_SHADOWMAP:
+               return (flags & TEXF_LOWPRECISION) ? &textype_shadowmap16 : &textype_shadowmap24;
+       case TEXTYPE_COLORBUFFER:
+               return &textype_colorbuffer;
+       default:
+               Host_Error("R_GetTexTypeInfo: unknown texture format");
+               break;
+       }
+       return NULL;
+}
+
+// dynamic texture code [11/22/2007 Black]
+void R_MarkDirtyTexture(rtexture_t *rt) {
+       gltexture_t *glt = (gltexture_t*) rt;
+       if( !glt ) {
                return;
        }
 
-       for (i=0 ; i< 6 ; i++)
+       // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
+       if (glt->flags & GLTEXF_DYNAMIC)
        {
-               if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
-                       break;
+               // mark it as dirty, so R_RealGetTexture gets called
+               glt->dirty = true;
        }
-       if (i == 6)
-       {
-               Con_Printf ("bad filter name\n");
+}
+
+void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
+       gltexture_t *glt = (gltexture_t*) rt;
+       if( !glt ) {
                return;
        }
 
-       gl_filter_min = modes[i].minimize;
-       gl_filter_max = modes[i].maximize;
+       glt->flags |= GLTEXF_DYNAMIC;
+       glt->updatecallback = updatecallback;
+       glt->updatacallback_data = data;
+}
 
-       if (!r_upload.value)
-               return;
-       // change all the existing mipmap texture objects
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
-       {
-               if (glt->mipmap)
-               {
-                       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);
-               }
+static void R_UpdateDynamicTexture(gltexture_t *glt) {
+       glt->dirty = false;
+       if( glt->updatecallback ) {
+               glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
        }
 }
 
-extern int buildnumber;
-
-char engineversion[40];
-
-void GL_UploadTexture (gltexture_t *glt);
-void gl_textures_start()
+void R_PurgeTexture(rtexture_t *rt)
 {
-       int i;
-       gltexture_t *glt;
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
-               GL_UploadTexture(glt);
+       if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
+               R_FreeTexture(rt);
+       }
 }
 
-void gl_textures_shutdown()
+void R_FreeTexture(rtexture_t *rt)
 {
+       gltexture_t *glt, **gltpointer;
+
+       glt = (gltexture_t *)rt;
+       if (glt == NULL)
+               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", glt->identifier);
+
+       if (glt->texnum)
+       {
+               CHECKGLERROR
+               qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+       }
+
+       if (glt->inputtexels)
+               Mem_Free(glt->inputtexels);
+       Mem_ExpandableArray_FreeRecord(&texturearray, glt);
 }
 
-void GL_Textures_Init (void)
+rtexturepool_t *R_AllocTexturePool(void)
 {
-       Cvar_RegisterVariable (&gl_max_size);
-       Cvar_RegisterVariable (&gl_picmip);
-       Cvar_RegisterVariable (&gl_lerpimages);
-       Cvar_RegisterVariable (&r_upload);
-#ifdef NORENDER
-       r_upload.value = 0;
-#endif
+       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;
+}
 
-       // 3dfx can only handle 256 wide textures
-       if (!Q_strncasecmp ((char *)gl_renderer, "3dfx",4) || strstr((char *)gl_renderer, "Glide"))
-               Cvar_Set ("gl_max_size", "256");
+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");
+       for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
+       if (*poolpointer == pool)
+               *poolpointer = pool->next;
+       else
+               Host_Error("R_FreeTexturePool: pool not linked");
+       while (pool->gltchain)
+               R_FreeTexture((rtexture_t *)pool->gltchain);
+       Mem_Free(pool);
+}
 
-       Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f);
 
-       R_RegisterModule("GL_Textures", gl_textures_start, gl_textures_shutdown);
+typedef struct glmode_s
+{
+       char *name;
+       int minification, magnification;
 }
+glmode_t;
 
-/*
-================
-GL_FindTexture
-================
-*/
-int GL_FindTexture (char *identifier)
+static glmode_t modes[6] =
 {
-       int             i;
-       gltexture_t     *glt;
-
-       for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
-       {
-               if (!strcmp (identifier, glt->identifier))
-                       return gltextures[i].texnum;
-       }
+       {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
+       {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
+       {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
+       {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
+       {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
+       {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
+};
 
-       return -1;
+#ifdef SUPPORTD3D
+typedef struct d3dmode_s
+{
+       char *name;
+       int m1, m2;
 }
+d3dmode_t;
 
-extern byte qgamma[];
+static d3dmode_t d3dmodes[6] =
+{
+       {"GL_NEAREST", D3DTEXF_POINT, D3DTEXF_POINT},
+       {"GL_LINEAR", D3DTEXF_LINEAR, D3DTEXF_POINT},
+       {"GL_NEAREST_MIPMAP_NEAREST", D3DTEXF_POINT, D3DTEXF_POINT},
+       {"GL_LINEAR_MIPMAP_NEAREST", D3DTEXF_LINEAR, D3DTEXF_POINT},
+       {"GL_NEAREST_MIPMAP_LINEAR", D3DTEXF_POINT, D3DTEXF_LINEAR},
+       {"GL_LINEAR_MIPMAP_LINEAR", D3DTEXF_LINEAR, D3DTEXF_LINEAR}
+};
+#endif
 
-// LordHavoc: gamma correction and improved resampling
-void GL_ResampleTextureLerpLine (byte *in, byte *out, int inwidth, int outwidth)
+static void GL_TextureMode_f (void)
 {
-       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 i;
+       GLint oldbindtexnum;
+       gltexture_t *glt;
+       gltexturepool_t *pool;
+
+       if (Cmd_Argc() == 1)
        {
-               xi = (int) f >> 16;
-               if (xi != oldx)
-               {
-                       in += (xi - oldx) * 4;
-                       oldx = xi;
-               }
-               if (xi < endx)
+               Con_Printf("Texture mode is %sforced\n", gl_filter_force ? "" : "not ");
+               for (i = 0;i < 6;i++)
                {
-                       l2 = f & 0xFFFF;
-                       l1 = 0x10000 - l2;
-                       *out++ = qgamma[(byte) ((in[0] * l1 + in[4] * l2) >> 16)];
-                       *out++ = qgamma[(byte) ((in[1] * l1 + in[5] * l2) >> 16)];
-                       *out++ = qgamma[(byte) ((in[2] * l1 + in[6] * l2) >> 16)];
-                       *out++ =        (byte) ((in[3] * l1 + in[7] * l2) >> 16) ;
-               }
-               else // last pixel of the line has no pixel to lerp to
-               {
-                       *out++ = qgamma[in[0]];
-                       *out++ = qgamma[in[1]];
-                       *out++ = qgamma[in[2]];
-                       *out++ =        in[3] ;
+                       if (gl_filter_min == modes[i].minification)
+                       {
+                               Con_Printf("%s\n", modes[i].name);
+                               return;
+                       }
                }
+               Con_Print("current filter is unknown???\n");
+               return;
        }
-}
 
-/*
-================
-GL_ResampleTexture
-================
-*/
-void GL_ResampleTexture (void *indata, int inwidth, int inheight, void *outdata,  int outwidth, int outheight)
-{
-       // LordHavoc: gamma correction and greatly improved resampling
-       if (gl_lerpimages.value)
+       for (i = 0;i < (int)(sizeof(modes)/sizeof(*modes));i++)
+               if (!strcasecmp (modes[i].name, Cmd_Argv(1) ) )
+                       break;
+       if (i == 6)
        {
-               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);
+               Con_Print("bad filter name\n");
+               return;
+       }
 
-               row1 = malloc(outwidth*4);
-               row2 = malloc(outwidth*4);
-               inrow = indata;
-               oldy = 0;
-               GL_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth);
-               GL_ResampleTextureLerpLine (inrow + inwidth*4, row2, inwidth, outwidth);
-               for (i = 0, f = 0;i < outheight;i++,f += fstep)
+       gl_filter_min = modes[i].minification;
+       gl_filter_mag = modes[i].magnification;
+       gl_filter_force = ((Cmd_Argc() > 2) && !strcasecmp(Cmd_Argv(2), "force"));
+
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               // change all the existing mipmap texture objects
+               // FIXME: force renderer(/client/something?) restart instead?
+               CHECKGLERROR
+               GL_ActiveTexture(0);
+               for (pool = gltexturepoolchain;pool;pool = pool->next)
                {
-                       yi = f >> 16;
-                       if (yi != oldy)
-                       {
-                               inrow = (byte *)indata + inwidth*4*yi;
-                               if (yi == oldy+1)
-                                       memcpy(row1, row2, outwidth*4);
-                               else
-                                       GL_ResampleTextureLerpLine (inrow, row1, inwidth, outwidth);
-                               if (yi < endy)
-                                       GL_ResampleTextureLerpLine (inrow + inwidth*4, row2, inwidth, outwidth);
-                               else
-                                       memcpy(row2, row1, outwidth*4);
-                               oldy = yi;
-                       }
-                       if (yi < endy)
+                       for (glt = pool->gltchain;glt;glt = glt->chain)
                        {
-                               l2 = f & 0xFFFF;
-                               l1 = 0x10000 - l2;
-                               for (j = 0;j < outwidth;j++)
+                               // only update already uploaded images
+                               if (glt->texnum && (gl_filter_force || !(glt->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR))))
                                {
-                                       *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);
+                                       oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+                                       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
+                                       {
+                                               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
                                }
-                               row1 -= outwidth*4;
-                               row2 -= outwidth*4;
                        }
-                       else // last line has no pixels to lerp to
+               }
+               break;
+       case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+               d3d_filter_flatmin = d3dmodes[i].m1;
+               d3d_filter_flatmag = d3dmodes[i].m1;
+               d3d_filter_flatmix = D3DTEXF_POINT;
+               d3d_filter_mipmin = d3dmodes[i].m1;
+               d3d_filter_mipmag = d3dmodes[i].m1;
+               d3d_filter_mipmix = d3dmodes[i].m2;
+               d3d_filter_nomip = i < 2;
+               if (gl_texture_anisotropy.integer > 1 && i == 5)
+                       d3d_filter_mipmin = d3d_filter_mipmag = D3DTEXF_ANISOTROPIC;
+               for (pool = gltexturepoolchain;pool;pool = pool->next)
+               {
+                       for (glt = pool->gltchain;glt;glt = glt->chain)
                        {
-                               for (j = 0;j < outwidth;j++)
+                               // only update already uploaded images
+                               if (glt->d3dtexture && (gl_filter_force || !(glt->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR))))
                                {
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
-                                       *out++ = *row1++;
+                                       if (glt->flags & TEXF_MIPMAP)
+                                       {
+                                               glt->d3dminfilter = d3d_filter_mipmin;
+                                               glt->d3dmagfilter = d3d_filter_mipmag;
+                                               glt->d3dmipfilter = d3d_filter_mipmix;
+                                               glt->d3dmaxmiplevelfilter = 0;
+                                       }
+                                       else
+                                       {
+                                               glt->d3dminfilter = d3d_filter_flatmin;
+                                               glt->d3dmagfilter = d3d_filter_flatmag;
+                                               glt->d3dmipfilter = d3d_filter_flatmix;
+                                               glt->d3dmaxmiplevelfilter = 0;
+                                       }
                                }
-                               row1 -= outwidth*4;
                        }
                }
-               free(row1);
-               free(row2);
+#endif
+               break;
+       case RENDERPATH_D3D10:
+               Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       case RENDERPATH_D3D11:
+               Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
        }
-       else
-       {
-               int             i, j;
-               unsigned        frac, fracstep;
-               byte    *inrow, *out, *inpix;
-               out = outdata;
+}
 
-               fracstep = inwidth*0x10000/outwidth;
-               for (i=0 ; i<outheight ; i++)
+static void GL_Texture_CalcImageSize(int texturetype, int flags, int miplevel, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth, int *outmiplevels)
+{
+       int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1, miplevels = 1;
+
+       switch (texturetype)
+       {
+       default:
+       case GLTEXTURETYPE_2D:
+               maxsize = vid.maxtexturesize_2d;
+               if (flags & TEXF_PICMIP)
                {
-                       inrow = (byte *)indata + inwidth*(i*inheight/outheight)*4;
-                       frac = fracstep >> 1;
-                       for (j=0 ; j<outwidth ; j+=4)
-                       {
-                               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;
-                       }
+                       maxsize = bound(1, gl_max_size.integer, maxsize);
+                       picmip = miplevel;
                }
+               break;
+       case GLTEXTURETYPE_3D:
+               maxsize = vid.maxtexturesize_3d;
+               break;
+       case GLTEXTURETYPE_CUBEMAP:
+               maxsize = vid.maxtexturesize_cubemap;
+               break;
        }
-}
-
-/*
-================
-GL_Resample8BitTexture -- JACK
-================
-*/
-/*
-void GL_Resample8BitTexture (unsigned char *in, int inwidth, int inheight, unsigned char *out,  int outwidth, int outheight)
-{
-       int             i, j;
-       unsigned        char *inrow;
-       unsigned        frac, fracstep;
 
-       fracstep = inwidth*0x10000/outwidth;
-       for (i=0 ; i<outheight ; i++, out += outwidth)
+       if (outwidth)
        {
-               inrow = in + inwidth*(i*inheight/outheight);
-               frac = fracstep >> 1;
-               for (j=0 ; j<outwidth ; j+=4)
+               if (vid.support.arb_texture_non_power_of_two)
+                       width2 = min(inwidth >> picmip, maxsize);
+               else
                {
-                       out[j  ] = inrow[frac>>16];frac += fracstep;
-                       out[j+1] = inrow[frac>>16];frac += fracstep;
-                       out[j+2] = inrow[frac>>16];frac += fracstep;
-                       out[j+3] = inrow[frac>>16];frac += fracstep;
+                       for (width2 = 1;width2 < inwidth;width2 <<= 1);
+                       for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
                }
+               *outwidth = max(1, width2);
+       }
+       if (outheight)
+       {
+               if (vid.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 (vid.support.arb_texture_non_power_of_two)
+                       depth2 = min(indepth >> picmip, maxsize);
+               else
+               {
+                       for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
+                       for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
+               }
+               *outdepth = max(1, depth2);
        }
-}
-*/
 
+       miplevels = 1;
+       if (flags & TEXF_MIPMAP)
+       {
+               int extent = max(width2, max(height2, depth2));
+               while(extent >>= 1)
+                       miplevels++;
+       }
+       if (outmiplevels)
+               *outmiplevels = miplevels;
+}
 
-/*
-================
-GL_MipMap
 
-Operates in place, quartering the size of the texture
-================
-*/
-/*
-void GL_MipMap (byte *in, int width, int height)
+static int R_CalcTexelDataSize (gltexture_t *glt)
 {
-       int             i, j;
-       byte    *out;
+       int width2, height2, depth2, size;
+
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->miplevel, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2, NULL);
 
-       width <<=2;
-       height >>= 1;
-       out = in;
-       for (i=0 ; i<height ; i++, in+=width)
+       size = width2 * height2 * depth2;
+
+       if (glt->flags & TEXF_MIPMAP)
        {
-               for (j=0 ; j<width ; j+=8, out+=4, in+=8)
+               while (width2 > 1 || height2 > 1 || depth2 > 1)
                {
-                       out[0] = (in[0] + in[4] + in[width+0] + in[width+4])>>2;
-                       out[1] = (in[1] + in[5] + in[width+1] + in[width+5])>>2;
-                       out[2] = (in[2] + in[6] + in[width+2] + in[width+6])>>2;
-                       out[3] = (in[3] + in[7] + in[width+3] + in[width+7])>>2;
+                       if (width2 > 1)
+                               width2 >>= 1;
+                       if (height2 > 1)
+                               height2 >>= 1;
+                       if (depth2 > 1)
+                               depth2 >>= 1;
+                       size += width2 * height2 * depth2;
                }
        }
-}
-*/
 
-/*
-================
-GL_MipMap8Bit
+       return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
+}
 
-Mipping for 8 bit textures
-================
-*/
-/*
-void GL_MipMap8Bit (byte *in, int width, int height)
+void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 {
-       int             i, j;
-       unsigned short     r,g,b;
-       byte    *out, *at1, *at2, *at3, *at4;
-
-       height >>= 1;
-       out = in;
-       for (i=0 ; i<height ; i++, in+=width)
+       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;
+       if (printeach)
+               Con_Print("glsize input loaded mip alpha name\n");
+       for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
-               for (j=0 ; j<width ; j+=2, out+=1, in+=2)
+               pooltotal = 0;
+               pooltotalt = 0;
+               pooltotalp = 0;
+               poolloaded = 0;
+               poolloadedt = 0;
+               poolloadedp = 0;
+               for (glt = pool->gltchain;glt;glt = glt->chain)
                {
-                       at1 = (byte *) (d_8to24table + in[0]);
-                       at2 = (byte *) (d_8to24table + in[1]);
-                       at3 = (byte *) (d_8to24table + in[width+0]);
-                       at4 = (byte *) (d_8to24table + in[width+1]);
-
-                       r = (at1[0]+at2[0]+at3[0]+at4[0]); r>>=5;
-                       g = (at1[1]+at2[1]+at3[1]+at4[1]); g>>=5;
-                       b = (at1[2]+at2[2]+at3[2]+at4[2]); b>>=5;
-
-                       out[0] = d_15to8table[(r<<0) + (g<<5) + (b<<10)];
+                       glsize = R_CalcTexelDataSize(glt);
+                       isloaded = glt->texnum != 0;
+                       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", (void *)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;
        }
+       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);
+}
+
+static void R_TextureStats_f(void)
+{
+       R_TextureStats_Print(true, true, true);
 }
-*/
 
-/*
-===============
-GL_Upload32
-===============
-*/
-/*
-void GL_Upload32 (void *data, int width, int height,  qboolean mipmap, qboolean alpha)
+static void r_textures_start(void)
 {
-       int samples, scaled_width, scaled_height, i;
-       byte *in, *out, *scaled;
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               // LordHavoc: allow any alignment
+               CHECKGLERROR
+               qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
+               qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
+               break;
+       case RENDERPATH_D3D9:
+               break;
+       case RENDERPATH_D3D10:
+               Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       case RENDERPATH_D3D11:
+               Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       }
 
-       for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
-               ;
-       for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
-               ;
+       texturemempool = Mem_AllocPool("texture management", 0, NULL);
+       Mem_ExpandableArray_NewArray(&texturearray, texturemempool, sizeof(gltexture_t), 512);
+
+       // Disable JPEG screenshots if the DLL isn't loaded
+       if (! JPEG_OpenLibrary ())
+               Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
+       if (! PNG_OpenLibrary ())
+               Cvar_SetValueQuick (&scr_screenshot_png, 0);
+}
 
-       scaled_width >>= (int)gl_picmip.value;
-       scaled_height >>= (int)gl_picmip.value;
+static void r_textures_shutdown(void)
+{
+       rtexturepool_t *temp;
 
-       if (scaled_width > gl_max_size.value)
-               scaled_width = gl_max_size.value;
-       if (scaled_height > gl_max_size.value)
-               scaled_height = gl_max_size.value;
+       JPEG_CloseLibrary ();
 
-       if (alpha)
+       while(gltexturepoolchain)
        {
-               alpha = false;
-               in = data;
-               for (i = 3;i < width*height*4;i += 4)
-                       if (in[i] != 255)
-                       {
-                               alpha = true;
-                               break;
-                       }
+               temp = (rtexturepool_t *) gltexturepoolchain;
+               R_FreeTexturePool(&temp);
        }
 
-       samples = alpha ? gl_alpha_format : gl_solid_format;
+       resizebuffersize = 0;
+       resizebuffer = NULL;
+       colorconvertbuffer = NULL;
+       texturebuffer = NULL;
+       Mem_ExpandableArray_FreeArray(&texturearray);
+       Mem_FreePool(&texturemempool);
+}
 
-       texels += scaled_width * scaled_height;
+static void r_textures_newmap(void)
+{
+}
 
-       scaled = malloc(scaled_width*scaled_height*4);
-       if (scaled_width == width && scaled_height == height)
+static void r_textures_devicelost(void)
+{
+       int i, endindex;
+       gltexture_t *glt;
+       endindex = Mem_ExpandableArray_IndexRange(&texturearray);
+       for (i = 0;i < endindex;i++)
        {
-               // LordHavoc: gamma correct while copying
-               in = (byte *)data;
-               out = (byte *)scaled;
-               for (i = 0;i < width*height;i++)
+               glt = (gltexture_t *) Mem_ExpandableArray_RecordAtIndex(&texturearray, i);
+               if (!glt || !(glt->flags & TEXF_RENDERTARGET))
+                       continue;
+               switch(vid.renderpath)
                {
-                       *out++ = qgamma[*in++];
-                       *out++ = qgamma[*in++];
-                       *out++ = qgamma[*in++];
-                       *out++ = *in++;
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       if (glt->tiledepth > 1)
+                               IDirect3DVolumeTexture9_Release((IDirect3DVolumeTexture9 *)glt->d3dtexture);
+                       else if (glt->sides == 6)
+                               IDirect3DCubeTexture9_Release((IDirect3DCubeTexture9 *)glt->d3dtexture);
+                       else
+                               IDirect3DTexture9_Release((IDirect3DTexture9 *)glt->d3dtexture);
+                       glt->d3dtexture = NULL;
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
                }
        }
-       else
-               GL_ResampleTexture (data, width, height, scaled, scaled_width, scaled_height);
+}
 
-       glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
-       if (mipmap)
+static void r_textures_devicerestored(void)
+{
+       int i, endindex;
+       gltexture_t *glt;
+       endindex = Mem_ExpandableArray_IndexRange(&texturearray);
+       for (i = 0;i < endindex;i++)
        {
-               int             miplevel;
-
-               miplevel = 0;
-               while (scaled_width > 1 || scaled_height > 1)
+               glt = (gltexture_t *) Mem_ExpandableArray_RecordAtIndex(&texturearray, i);
+               if (!glt || !(glt->flags & TEXF_RENDERTARGET))
+                       continue;
+               switch(vid.renderpath)
                {
-                       GL_MipMap ((byte *)scaled, scaled_width, scaled_height);
-                       scaled_width >>= 1;
-                       scaled_height >>= 1;
-                       if (scaled_width < 1)
-                               scaled_width = 1;
-                       if (scaled_height < 1)
-                               scaled_height = 1;
-                       miplevel++;
-                       glTexImage2D (GL_TEXTURE_2D, miplevel, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       {
+                               HRESULT d3dresult;
+                               if (glt->tiledepth > 1)
+                               {
+                                       if (FAILED(d3dresult = IDirect3DDevice9_CreateVolumeTexture(vid_d3d9dev, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DVolumeTexture9 **)&glt->d3dtexture, NULL)))
+                                               Sys_Error("IDirect3DDevice9_CreateVolumeTexture failed!");
+                               }
+                               else if (glt->sides == 6)
+                               {
+                                       if (FAILED(d3dresult = IDirect3DDevice9_CreateCubeTexture(vid_d3d9dev, glt->tilewidth, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DCubeTexture9 **)&glt->d3dtexture, NULL)))
+                                               Sys_Error("IDirect3DDevice9_CreateCubeTexture failed!");
+                               }
+                               else
+                               {
+                                       if (FAILED(d3dresult = IDirect3DDevice9_CreateTexture(vid_d3d9dev, glt->tilewidth, glt->tileheight, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DTexture9 **)&glt->d3dtexture, NULL)))
+                                               Sys_Error("IDirect3DDevice9_CreateTexture failed!");
+                               }
+                       }
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
                }
        }
-
-       if (mipmap)
-       {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
-       }
-       else
-       {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
-       }
-       free(scaled);
 }
 
-void GL_Upload8_EXT (byte *data, int width, int height,  qboolean mipmap)
-{
-       int             scaled_width, scaled_height;
-       byte    *scaled = NULL;
-
-       for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
-               ;
-       for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
-               ;
 
-       scaled_width >>= (int)gl_picmip.value;
-       scaled_height >>= (int)gl_picmip.value;
+void R_Textures_Init (void)
+{
+       Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc); an additional argument 'force' forces the texture mode even in cases where it may not be appropriate");
+       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 (&gl_picmip_world);
+       Cvar_RegisterVariable (&r_picmipworld);
+       Cvar_RegisterVariable (&gl_picmip_sprites);
+       Cvar_RegisterVariable (&r_picmipsprites);
+       Cvar_RegisterVariable (&gl_picmip_other);
+       Cvar_RegisterVariable (&gl_max_lightmapsize);
+       Cvar_RegisterVariable (&r_lerpimages);
+       Cvar_RegisterVariable (&gl_texture_anisotropy);
+       Cvar_RegisterVariable (&gl_texturecompression);
+       Cvar_RegisterVariable (&gl_texturecompression_color);
+       Cvar_RegisterVariable (&gl_texturecompression_normal);
+       Cvar_RegisterVariable (&gl_texturecompression_gloss);
+       Cvar_RegisterVariable (&gl_texturecompression_glow);
+       Cvar_RegisterVariable (&gl_texturecompression_2d);
+       Cvar_RegisterVariable (&gl_texturecompression_q3bsplightmaps);
+       Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
+       Cvar_RegisterVariable (&gl_texturecompression_sky);
+       Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
+       Cvar_RegisterVariable (&gl_texturecompression_reflectmask);
+       Cvar_RegisterVariable (&gl_nopartialtextureupdates);
+
+       R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap, r_textures_devicelost, r_textures_devicerestored);
+}
 
-       if (scaled_width > gl_max_size.value)
-               scaled_width = gl_max_size.value;
-       if (scaled_height > gl_max_size.value)
-               scaled_height = gl_max_size.value;
+void R_Textures_Frame (void)
+{
+       static int old_aniso = 0;
 
-       texels += scaled_width * scaled_height;
+       // could do procedural texture animation here, if we keep track of which
+       // textures were accessed this frame...
 
-       if (scaled_width == width && scaled_height == height)
+       // free the resize buffers
+       resizebuffersize = 0;
+       if (resizebuffer)
        {
-               if (!mipmap)
-               {
-                       glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX , GL_UNSIGNED_BYTE, data);
-                       goto done;
-               }
-               scaled = malloc(scaled_width*scaled_height*4);
-               memcpy (scaled, data, width*height);
+               Mem_Free(resizebuffer);
+               resizebuffer = NULL;
        }
-       else
+       if (colorconvertbuffer)
        {
-               scaled = malloc(scaled_width*scaled_height*4);
-               GL_Resample8BitTexture (data, width, height, (void*) scaled, scaled_width, scaled_height);
+               Mem_Free(colorconvertbuffer);
+               colorconvertbuffer = NULL;
        }
 
-       glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
-       if (mipmap)
+       if (old_aniso != gl_texture_anisotropy.integer)
        {
-               int             miplevel;
+               gltexture_t *glt;
+               gltexturepool_t *pool;
+               GLint oldbindtexnum;
+
+               old_aniso = bound(1, gl_texture_anisotropy.integer, (int)vid.max_anisotropy);
+
+               Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 
-               miplevel = 0;
-               while (scaled_width > 1 || scaled_height > 1)
+               switch(vid.renderpath)
                {
-                       GL_MipMap8Bit ((byte *)scaled, scaled_width, scaled_height);
-                       scaled_width >>= 1;
-                       scaled_height >>= 1;
-                       if (scaled_width < 1)
-                               scaled_width = 1;
-                       if (scaled_height < 1)
-                               scaled_height = 1;
-                       miplevel++;
-                       glTexImage2D (GL_TEXTURE_2D, miplevel, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
-               }
-       }
-done: ;
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       CHECKGLERROR
+                       GL_ActiveTexture(0);
+                       for (pool = gltexturepoolchain;pool;pool = pool->next)
+                       {
+                               for (glt = pool->gltchain;glt;glt = glt->chain)
+                               {
+                                       // only update already uploaded images
+                                       if (glt->texnum && (glt->flags & TEXF_MIPMAP) == TEXF_MIPMAP)
+                                       {
+                                               oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
 
+                                               qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+                                               qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 
-       if (mipmap)
-       {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+                                               qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+                                       }
+                               }
+                       }
+                       break;
+               case RENDERPATH_D3D9:
+               case RENDERPATH_D3D10:
+               case RENDERPATH_D3D11:
+                       break;
+               }
        }
-       else
+}
+
+void R_MakeResizeBufferBigger(int size)
+{
+       if (resizebuffersize < size)
        {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+               resizebuffersize = size;
+               if (resizebuffer)
+                       Mem_Free(resizebuffer);
+               if (colorconvertbuffer)
+                       Mem_Free(colorconvertbuffer);
+               resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
+               colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
+               if (!resizebuffer || !colorconvertbuffer)
+                       Host_Error("R_Upload: out of memory");
        }
-       free(scaled);
 }
-*/
 
-extern qboolean VID_Is8bit();
-
-/*
-===============
-GL_Upload8
-===============
-*/
-/*
-void GL_Upload8 (byte *data, int width, int height,  qboolean mipmap, qboolean alpha)
+static void GL_SetupTextureParameters(int flags, textype_t textype, int texturetype)
 {
-       static  unsigned *trans;
-       int                     i, s;
-       qboolean        noalpha;
-       int                     p;
-       byte    *indata;
-       int             *outdata;
+       int textureenum = gltexturetypeenums[texturetype];
+       int wrapmode = (flags & TEXF_CLAMP) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
+
+       CHECKGLERROR
 
-       s = width*height;
-       trans = malloc(s*4);
-       // if there are no transparent pixels, make it a 3 component
-       // texture even if it was specified as otherwise
-       if (alpha)
+       if (vid.support.ext_texture_filter_anisotropic && (flags & TEXF_MIPMAP))
+       {
+               int aniso = bound(1, gl_texture_anisotropy.integer, (int)vid.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 (!gl_filter_force && flags & TEXF_FORCENEAREST)
+       {
+               if (flags & TEXF_MIPMAP)
+               {
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);CHECKGLERROR
+               }
+               else
+               {
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_NEAREST);CHECKGLERROR
+               }
+               qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_NEAREST);CHECKGLERROR
+       }
+       else if (!gl_filter_force && flags & TEXF_FORCELINEAR)
        {
-               noalpha = true;
-               for (i=0 ; i<s ; i++)
+               if (flags & TEXF_MIPMAP)
                {
-                       p = data[i];
-                       if (p != 255)
-                               trans[i] = d_8to24table[p];
+                       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
                        {
-                               trans[i] = 0; // force to black
-                               noalpha = false;
+                               qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);CHECKGLERROR
                        }
                }
-
-               if (noalpha)
+               else
                {
-                       if (VID_Is8bit() && (data!=scrap_texels[0]))
-                       {
-                               GL_Upload8_EXT (data, width, height, mipmap);
-                               free(trans);
-                               return;
-                       }
-                       alpha = false;
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, GL_LINEAR);CHECKGLERROR
                }
+               qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, GL_LINEAR);CHECKGLERROR
        }
        else
        {
-               // LordHavoc: dodge the copy if it will be uploaded as 8bit
-               if (VID_Is8bit() && (data!=scrap_texels[0]))
-               {
-                       GL_Upload8_EXT (data, width, height, mipmap);
-                       free(trans);
-                       return;
-               }
-               //if (s&3)
-               //      Sys_Error ("GL_Upload8: s&3");
-               indata = data;
-               outdata = trans;
-               if (s&1)
-                       *outdata++ = d_8to24table[*indata++];
-               if (s&2)
+               if (flags & TEXF_MIPMAP)
                {
-                       *outdata++ = d_8to24table[*indata++];
-                       *outdata++ = d_8to24table[*indata++];
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
                }
-               for (i = 0;i < s;i+=4)
+               else
                {
-                       *outdata++ = d_8to24table[*indata++];
-                       *outdata++ = d_8to24table[*indata++];
-                       *outdata++ = d_8to24table[*indata++];
-                       *outdata++ = d_8to24table[*indata++];
+                       qglTexParameteri(textureenum, GL_TEXTURE_MIN_FILTER, gl_filter_mag);CHECKGLERROR
                }
+               qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
        }
 
-       GL_Upload32 (trans, width, height, mipmap, alpha);
-       free(trans);
-}
-*/
-
-void GL_AllocTexels(gltexture_t *glt, int width, int height, int mipmapped)
-{
-       int i, w, h, size, done;
-       if (glt->texels[0])
-               free(glt->texels[0]);
-       glt->texelsize[0][0] = width;
-       glt->texelsize[0][1] = height;
-       if (mipmapped)
+       if (textype == TEXTYPE_SHADOWMAP)
        {
-               size = 0;
-               w = width;h = height;
-               i = 0;
-               done = false;
-               for (i = 0;i < MAXMIPS;i++)
+               if (vid.support.arb_shadow)
                {
-                       glt->texelsize[i][0] = w;
-                       glt->texelsize[i][1] = h;
-                       glt->texels[i] = (void *)size;
-                       size += w*h*4;
-                       if (w > 1)
+                       if (flags & TEXF_COMPARE)
                        {
-                               w >>= 1;
-                               if (h > 1)
-                                       h >>= 1;
+                               qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
                        }
-                       else if (h > 1)
-                               h >>= 1;
                        else
                        {
-                               i++;
-                               break;
+                               qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
                        }
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
                }
-               while (i < MAXMIPS)
-                       glt->texels[i++] = NULL;
-               glt->texels[0] = malloc(size);
-               for (i = 1;i < MAXMIPS && glt->texels[i];i++)
-                       glt->texels[i] += (int) glt->texels[0];
+               qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);CHECKGLERROR
+       }
+
+       CHECKGLERROR
+}
+
+static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int fragy, int fragz, int fragwidth, int fragheight, int fragdepth)
+{
+       int i, mip, width, height, depth;
+       GLint oldbindtexnum = 0;
+       const unsigned char *prevbuffer;
+       prevbuffer = data;
+
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               CHECKGLERROR
+
+               // we need to restore the texture binding after finishing the upload
+               GL_ActiveTexture(0);
+               oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+               qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+               break;
+       case RENDERPATH_D3D9:
+       case RENDERPATH_D3D10:
+       case RENDERPATH_D3D11:
+               break;
+       }
+
+       // these are rounded up versions of the size to do better resampling
+       if (vid.support.arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
+       {
+               width = glt->inputwidth;
+               height = glt->inputheight;
+               depth = glt->inputdepth;
        }
        else
        {
-               glt->texels[0] = malloc(width*height*4);
-               for (i = 1;i < MAXMIPS;i++)
-                       glt->texels[i] = NULL;
+               for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
+               for (height = 1;height < glt->inputheight;height <<= 1);
+               for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
        }
-       if (!glt->texels[0])
-               Sys_Error("GL_AllocTexels: out of memory\n");
-}
 
-// 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)
+       R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
+       R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
+
+       if (prevbuffer == NULL)
        {
-               if (height > destheight)
-               {
-                       // reduce both
-                       width2 = width >> 1;
-                       height2 = height >> 1;
-                       nextrow = width << 2;
-                       for (y = 0;y < height2;y++)
-                       {
-                               for (x = 0;x < width2;x++)
+               memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
+               prevbuffer = resizebuffer;
+       }
+       else if (glt->textype->textype == TEXTYPE_PALETTE)
+       {
+               // promote paletted to BGRA, so we only have to worry about BGRA in the rest of this code
+               Image_Copy8bitBGRA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
+               prevbuffer = colorconvertbuffer;
+       }
+
+       // upload the image - preferring to do only complete uploads (drivers do not really like partial updates)
+
+       if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth && (fragx != 0 || fragy != 0 || fragwidth != glt->tilewidth || fragheight != glt->tileheight))
+       {
+               // update a portion of the image
+               if (glt->texturetype != GLTEXTURETYPE_2D)
+                       Sys_Error("R_Upload: partial update of type other than 2D");
+               switch(vid.renderpath)
+               {
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       {
+                               RECT d3drect;
+                               D3DLOCKED_RECT d3dlockedrect;
+                               int y;
+                               memset(&d3drect, 0, sizeof(d3drect));
+                               d3drect.left = fragx;
+                               d3drect.top = fragy;
+                               d3drect.right = fragx+fragwidth;
+                               d3drect.bottom = fragy+fragheight;
+                               if (IDirect3DTexture9_LockRect((IDirect3DTexture9*)glt->d3dtexture, 0, &d3dlockedrect, &d3drect, 0) == D3D_OK && d3dlockedrect.pBits)
                                {
-                                       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;
+                                       for (y = 0;y < fragheight;y++)
+                                               memcpy((unsigned char *)d3dlockedrect.pBits + d3dlockedrect.Pitch * y, (unsigned char *)prevbuffer + fragwidth*glt->bytesperpixel * y, fragwidth*glt->bytesperpixel);
+                                       IDirect3DTexture9_UnlockRect((IDirect3DTexture9*)glt->d3dtexture, 0);
                                }
-                               in += nextrow; // skip a line
                        }
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
                }
-               else
+       }
+       else
+       {
+               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");
+
+               // cubemaps contain multiple images and thus get processed a bit differently
+               if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
                {
-                       // reduce width
-                       width2 = width >> 1;
-                       for (y = 0;y < height;y++)
+                       if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
                        {
-                               for (x = 0;x < width2;x++)
+                               Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
+                               prevbuffer = resizebuffer;
+                       }
+                       // picmip/max_size
+                       while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
+                       {
+                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
+                               prevbuffer = resizebuffer;
+                       }
+               }
+               mip = 0;
+               switch(vid.renderpath)
+               {
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       if (qglGetCompressedTexImageARB)
+                       {
+                               if (gl_texturecompression.integer >= 2)
+                                       qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
+                               else
+                                       qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_FASTEST);
+                               CHECKGLERROR
+                       }
+                       switch(glt->texturetype)
+                       {
+                       case GLTEXTURETYPE_2D:
+                               qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                               if (glt->flags & TEXF_MIPMAP)
                                {
-                                       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;
+                                       while (width > 1 || height > 1 || depth > 1)
+                                       {
+                                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                               prevbuffer = resizebuffer;
+                                               qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                                       }
                                }
+                               break;
+                       case GLTEXTURETYPE_3D:
+                               qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                               if (glt->flags & TEXF_MIPMAP)
+                               {
+                                       while (width > 1 || height > 1 || depth > 1)
+                                       {
+                                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                               prevbuffer = resizebuffer;
+                                               qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                                       }
+                               }
+                               break;
+                       case GLTEXTURETYPE_CUBEMAP:
+                               // convert and upload each side in turn,
+                               // from a continuous block of input texels
+                               texturebuffer = (unsigned char *)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_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
+                                               prevbuffer = resizebuffer;
+                                       }
+                                       // picmip/max_size
+                                       while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
+                                       {
+                                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
+                                               prevbuffer = resizebuffer;
+                                       }
+                                       mip = 0;
+                                       qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                                       if (glt->flags & TEXF_MIPMAP)
+                                       {
+                                               while (width > 1 || height > 1 || depth > 1)
+                                               {
+                                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                                       prevbuffer = resizebuffer;
+                                                       qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
+                                               }
+                                       }
+                               }
+                               break;
+                       case GLTEXTURETYPE_RECTANGLE:
+                               qglTexImage2D(GL_TEXTURE_RECTANGLE_ARB, mip++, glt->glinternalformat, width, height, 0, glt->glformat, glt->gltype, NULL);CHECKGLERROR
+                               break;
                        }
+                       GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
+                       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       if (!(glt->flags & TEXF_RENDERTARGET))
+                       {
+                               D3DLOCKED_RECT d3dlockedrect;
+                               D3DLOCKED_BOX d3dlockedbox;
+                               switch(glt->texturetype)
+                               {
+                               case GLTEXTURETYPE_2D:
+                                       if (IDirect3DTexture9_LockRect((IDirect3DTexture9*)glt->d3dtexture, mip, &d3dlockedrect, NULL, 0) == D3D_OK && d3dlockedrect.pBits)
+                                       {
+                                               if (prevbuffer)
+                                                       memcpy(d3dlockedrect.pBits, prevbuffer, width*height*glt->bytesperpixel);
+                                               else
+                                                       memset(d3dlockedrect.pBits, 255, width*height*glt->bytesperpixel);
+                                               IDirect3DTexture9_UnlockRect((IDirect3DTexture9*)glt->d3dtexture, mip);
+                                       }
+                                       mip++;
+                                       if ((glt->flags & TEXF_MIPMAP) && prevbuffer)
+                                       {
+                                               while (width > 1 || height > 1 || depth > 1)
+                                               {
+                                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                                       prevbuffer = resizebuffer;
+                                                       if (IDirect3DTexture9_LockRect((IDirect3DTexture9*)glt->d3dtexture, mip, &d3dlockedrect, NULL, 0) == D3D_OK && d3dlockedrect.pBits)
+                                                       {
+                                                               memcpy(d3dlockedrect.pBits, prevbuffer, width*height*glt->bytesperpixel);
+                                                               IDirect3DTexture9_UnlockRect((IDirect3DTexture9*)glt->d3dtexture, mip);
+                                                       }
+                                                       mip++;
+                                               }
+                                       }
+                                       break;
+                               case GLTEXTURETYPE_3D:
+                                       if (IDirect3DVolumeTexture9_LockBox((IDirect3DVolumeTexture9*)glt->d3dtexture, mip, &d3dlockedbox, NULL, 0) == D3D_OK && d3dlockedbox.pBits)
+                                       {
+                                               // we are not honoring the RowPitch or SlicePitch, hopefully this works with all sizes
+                                               memcpy(d3dlockedbox.pBits, prevbuffer, width*height*depth*glt->bytesperpixel);
+                                               IDirect3DVolumeTexture9_UnlockBox((IDirect3DVolumeTexture9*)glt->d3dtexture, mip);
+                                       }
+                                       mip++;
+                                       if (glt->flags & TEXF_MIPMAP)
+                                       {
+                                               while (width > 1 || height > 1 || depth > 1)
+                                               {
+                                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                                       prevbuffer = resizebuffer;
+                                                       if (IDirect3DVolumeTexture9_LockBox((IDirect3DVolumeTexture9*)glt->d3dtexture, mip, &d3dlockedbox, NULL, 0) == D3D_OK && d3dlockedbox.pBits)
+                                                       {
+                                                               // we are not honoring the RowPitch or SlicePitch, hopefully this works with all sizes
+                                                               memcpy(d3dlockedbox.pBits, prevbuffer, width*height*depth*glt->bytesperpixel);
+                                                               IDirect3DVolumeTexture9_UnlockBox((IDirect3DVolumeTexture9*)glt->d3dtexture, mip);
+                                                       }
+                                                       mip++;
+                                               }
+                                       }
+                                       break;
+                               case GLTEXTURETYPE_CUBEMAP:
+                                       // convert and upload each side in turn,
+                                       // from a continuous block of input texels
+                                       texturebuffer = (unsigned char *)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_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
+                                                       prevbuffer = resizebuffer;
+                                               }
+                                               // picmip/max_size
+                                               while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
+                                               {
+                                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
+                                                       prevbuffer = resizebuffer;
+                                               }
+                                               mip = 0;
+                                               if (IDirect3DCubeTexture9_LockRect((IDirect3DCubeTexture9*)glt->d3dtexture, (D3DCUBEMAP_FACES)i, mip, &d3dlockedrect, NULL, 0) == D3D_OK && d3dlockedrect.pBits)
+                                               {
+                                                       memcpy(d3dlockedrect.pBits, prevbuffer, width*height*glt->bytesperpixel);
+                                                       IDirect3DCubeTexture9_UnlockRect((IDirect3DCubeTexture9*)glt->d3dtexture, (D3DCUBEMAP_FACES)i, mip);
+                                               }
+                                               mip++;
+                                               if (glt->flags & TEXF_MIPMAP)
+                                               {
+                                                       while (width > 1 || height > 1 || depth > 1)
+                                                       {
+                                                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
+                                                               prevbuffer = resizebuffer;
+                                                               if (IDirect3DCubeTexture9_LockRect((IDirect3DCubeTexture9*)glt->d3dtexture, (D3DCUBEMAP_FACES)i, mip, &d3dlockedrect, NULL, 0) == D3D_OK && d3dlockedrect.pBits)
+                                                               {
+                                                                       memcpy(d3dlockedrect.pBits, prevbuffer, width*height*glt->bytesperpixel);
+                                                                       IDirect3DCubeTexture9_UnlockRect((IDirect3DCubeTexture9*)glt->d3dtexture, (D3DCUBEMAP_FACES)i, mip);
+                                                               }
+                                                               mip++;
+                                                       }
+                                               }
+                                       }
+                                       break;
+                               case GLTEXTURETYPE_RECTANGLE:
+                                       Sys_Error("Direct3D does not have RECTANGLE textures\n");
+                                       break;
+                               }
+                       }
+                       glt->d3daddressw = 0;
+                       if (glt->flags & TEXF_CLAMP)
+                       {
+                               glt->d3daddressu = D3DTADDRESS_CLAMP;
+                               glt->d3daddressv = D3DTADDRESS_CLAMP;
+                               if (glt->tiledepth > 1)
+                                       glt->d3daddressw = D3DTADDRESS_CLAMP;
+                       }
+                       else
+                       {
+                               glt->d3daddressu = D3DTADDRESS_WRAP;
+                               glt->d3daddressv = D3DTADDRESS_WRAP;
+                               if (glt->tiledepth > 1)
+                                       glt->d3daddressw = D3DTADDRESS_WRAP;
+                       }
+                       glt->d3dmipmaplodbias = 0;
+                       glt->d3dmaxmiplevel = 0;
+                       glt->d3dmaxmiplevelfilter = d3d_filter_nomip ? 0 : glt->d3dmaxmiplevel;
+                       if (glt->flags & TEXF_FORCELINEAR)
+                       {
+                               glt->d3dminfilter = D3DTEXF_LINEAR;
+                               glt->d3dmagfilter = D3DTEXF_LINEAR;
+                               glt->d3dmipfilter = D3DTEXF_POINT;
+                       }
+                       else if (glt->flags & TEXF_FORCENEAREST)
+                       {
+                               glt->d3dminfilter = D3DTEXF_POINT;
+                               glt->d3dmagfilter = D3DTEXF_POINT;
+                               glt->d3dmipfilter = D3DTEXF_POINT;
+                       }
+                       else if (glt->flags & TEXF_MIPMAP)
+                       {
+                               glt->d3dminfilter = d3d_filter_mipmin;
+                               glt->d3dmagfilter = d3d_filter_mipmag;
+                               glt->d3dmipfilter = d3d_filter_mipmix;
+                       }
+                       else
+                       {
+                               glt->d3dminfilter = d3d_filter_flatmin;
+                               glt->d3dmagfilter = d3d_filter_flatmag;
+                               glt->d3dmipfilter = d3d_filter_flatmix;
+                       }
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
                }
        }
-       else
+}
+
+static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int miplevel, textype_t textype, int texturetype, const unsigned char *data, const unsigned int *palette)
+{
+       int i, size;
+       gltexture_t *glt;
+       gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
+       textypeinfo_t *texinfo, *texinfo2;
+       unsigned char *temppixels = NULL;
+
+       if (cls.state == ca_dedicated)
+               return NULL;
+
+       if (texturetype == GLTEXTURETYPE_RECTANGLE && !vid.support.arb_texture_rectangle)
+       {
+               Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
+               return NULL;
+       }
+       if (texturetype == GLTEXTURETYPE_CUBEMAP && !vid.support.arb_texture_cube_map)
+       {
+               Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
+               return NULL;
+       }
+       if (texturetype == GLTEXTURETYPE_3D && !vid.support.ext_texture_3d)
        {
-               if (height > destheight)
+               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, size);
+               return NULL;
+       }
+
+       if (textype == TEXTYPE_RGBA)
+       {
+               // swap bytes
+               static int rgbaswapindices[4] = {2, 1, 0, 3};
+               textype = TEXTYPE_BGRA;
+               texinfo = R_GetTexTypeInfo(textype, flags);
+               temppixels = (unsigned char *)Mem_Alloc(tempmempool, width * height * depth * sides * 4);
+               Image_CopyMux(temppixels, data, width, height*depth*sides, false, false, false, 4, 4, rgbaswapindices);
+               data = temppixels;
+       }
+
+       // clear the alpha flag if the texture has no transparent pixels
+       switch(textype)
+       {
+       case TEXTYPE_PALETTE:
+               if (flags & TEXF_ALPHA)
                {
-                       // reduce height
-                       height2 = height >> 1;
-                       nextrow = width << 2;
-                       for (y = 0;y < height2;y++)
+                       flags &= ~TEXF_ALPHA;
+                       if (data)
                        {
-                               for (x = 0;x < width;x++)
+                               for (i = 0;i < size;i++)
                                {
-                                       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;
+                                       if (((unsigned char *)&palette[data[i]])[3] < 255)
+                                       {
+                                               flags |= TEXF_ALPHA;
+                                               break;
+                                       }
                                }
-                               in += nextrow; // skip a line
                        }
                }
-               else
-                       Sys_Error("GL_MipReduce: desired size already achieved\n");
+               break;
+       case TEXTYPE_RGBA:
+       case TEXTYPE_BGRA:
+               if (flags & TEXF_ALPHA)
+               {
+                       flags &= ~TEXF_ALPHA;
+                       if (data)
+                       {
+                               for (i = 3;i < size;i += 4)
+                               {
+                                       if (data[i] < 255)
+                                       {
+                                               flags |= TEXF_ALPHA;
+                                               break;
+                                       }
+                               }
+                       }
+               }
+               break;
+       case TEXTYPE_SHADOWMAP:
+               break;
+       case TEXTYPE_DXT1:
+               break;
+       case TEXTYPE_DXT1A:
+       case TEXTYPE_DXT3:
+       case TEXTYPE_DXT5:
+               flags |= TEXF_ALPHA;
+               break;
+       case TEXTYPE_ALPHA:
+               flags |= TEXF_ALPHA;
+               break;
+       case TEXTYPE_COLORBUFFER:
+               flags |= TEXF_ALPHA;
+               break;
+       default:
+               Sys_Error("R_LoadTexture: unknown texture type");
        }
+
+       texinfo2 = R_GetTexTypeInfo(textype, flags);
+       if(size == width * height * depth * sides * texinfo->inputbytesperpixel)
+               texinfo = texinfo2;
+       else
+               Con_Printf ("R_LoadTexture: input size changed after alpha fallback\n");
+
+       glt = (gltexture_t *)Mem_ExpandableArray_AllocRecord(&texturearray);
+       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;
+       glt->miplevel = (miplevel < 0) ? R_PicmipForFlags(flags) : miplevel; // note: if miplevel is -1, we know the texture is in original size and we can picmip it normally
+       glt->textype = texinfo;
+       glt->texturetype = texturetype;
+       glt->inputdatasize = size;
+       glt->palette = palette;
+       glt->glinternalformat = texinfo->glinternalformat;
+       glt->glformat = texinfo->glformat;
+       glt->gltype = texinfo->gltype;
+       glt->bytesperpixel = texinfo->internalbytesperpixel;
+       glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
+       glt->texnum = 0;
+       glt->dirty = false;
+       glt->gltexturetypeenum = gltexturetypeenums[glt->texturetype];
+       // init the dynamic texture attributes, too [11/22/2007 Black]
+       glt->updatecallback = NULL;
+       glt->updatacallback_data = NULL;
+
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->miplevel, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth, &glt->miplevels);
+
+       // upload the texture
+       // data may be NULL (blank texture for dynamic rendering)
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               CHECKGLERROR
+               qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+               break;
+       case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+               {
+                       D3DFORMAT d3dformat;
+                       D3DPOOL d3dpool;
+                       DWORD d3dusage;
+                       HRESULT d3dresult;
+                       d3dusage = 0;
+                       d3dpool = D3DPOOL_MANAGED;
+                       if (flags & TEXF_RENDERTARGET)
+                       {
+                               d3dusage |= D3DUSAGE_RENDERTARGET;
+                               d3dpool = D3DPOOL_DEFAULT;
+                       }
+                       switch(textype)
+                       {
+                       case TEXTYPE_PALETTE: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8R8G8B8 : D3DFMT_X8R8G8B8;break;
+                       case TEXTYPE_RGBA: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8B8G8R8 : D3DFMT_X8B8G8R8;break;
+                       case TEXTYPE_BGRA: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8R8G8B8 : D3DFMT_X8R8G8B8;break;
+                       case TEXTYPE_COLORBUFFER: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8R8G8B8 : D3DFMT_X8R8G8B8;break;
+                       case TEXTYPE_SHADOWMAP: d3dformat = D3DFMT_D16;d3dusage = D3DUSAGE_DEPTHSTENCIL;break; // note: can not use D3DUSAGE_RENDERTARGET here
+                       case TEXTYPE_ALPHA: d3dformat = D3DFMT_A8;break;
+                       default: d3dformat = D3DFMT_A8R8G8B8;Sys_Error("R_LoadTexture: unsupported texture type %i when picking D3DFMT", (int)textype);break;
+                       }
+                       glt->d3dformat = d3dformat;
+                       glt->d3dusage = d3dusage;
+                       glt->d3dpool = d3dpool;
+                       if (glt->tiledepth > 1)
+                       {
+                               if (FAILED(d3dresult = IDirect3DDevice9_CreateVolumeTexture(vid_d3d9dev, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DVolumeTexture9 **)&glt->d3dtexture, NULL)))
+                                       Sys_Error("IDirect3DDevice9_CreateVolumeTexture failed!");
+                       }
+                       else if (glt->sides == 6)
+                       {
+                               if (FAILED(d3dresult = IDirect3DDevice9_CreateCubeTexture(vid_d3d9dev, glt->tilewidth, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DCubeTexture9 **)&glt->d3dtexture, NULL)))
+                                       Sys_Error("IDirect3DDevice9_CreateCubeTexture failed!");
+                       }
+                       else
+                       {
+                               if (FAILED(d3dresult = IDirect3DDevice9_CreateTexture(vid_d3d9dev, glt->tilewidth, glt->tileheight, glt->miplevels, glt->d3dusage, (D3DFORMAT)glt->d3dformat, (D3DPOOL)glt->d3dpool, (IDirect3DTexture9 **)&glt->d3dtexture, NULL)))
+                                       Sys_Error("IDirect3DDevice9_CreateTexture failed!");
+                       }
+               }
+#endif
+               break;
+       case RENDERPATH_D3D10:
+               Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       case RENDERPATH_D3D11:
+               Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       }
+
+       R_Upload(glt, data, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
+       if ((glt->flags & TEXF_ALLOWUPDATES) && gl_nopartialtextureupdates.integer)
+               glt->bufferpixels = (unsigned char *)Mem_Alloc(texturemempool, glt->tilewidth*glt->tileheight*glt->tiledepth*glt->sides*glt->bytesperpixel);
+
+       // free any temporary processing buffer we allocated...
+       if (temppixels)
+               Mem_Free(temppixels);
+
+       // texture converting and uploading can take a while, so make sure we're sending keepalives
+       // FIXME: this causes rendering during R_Shadow_DrawLights
+//     CL_KeepaliveMessage(false);
+
+       return (rtexture_t *)glt;
 }
 
-void GL_UploadTexture (gltexture_t *glt)
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette)
 {
-       int mip, width, height;
-       if (!r_upload.value)
-               return;
-       glBindTexture(GL_TEXTURE_2D, glt->texnum);
-       width = glt->width;
-       height = glt->height;
-       for (mip = 0;mip < MAXMIPS && glt->texels[mip];mip++)
-               glTexImage2D(GL_TEXTURE_2D, mip, glt->alpha ? 4 : 3, glt->texelsize[mip][0], glt->texelsize[mip][1], 0, GL_RGBA, GL_UNSIGNED_BYTE, glt->texels[mip]);
-       if (glt->mipmap)
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, miplevel, textype, GLTEXTURETYPE_2D, data, palette);
+}
+
+rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, miplevel, textype, GLTEXTURETYPE_3D, data, palette);
+}
+
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, miplevel, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
+}
+
+rtexture_t *R_LoadTextureRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, miplevel, textype, GLTEXTURETYPE_RECTANGLE, data, palette);
+}
+
+static int R_ShadowMapTextureFlags(int precision, qboolean filter)
+{
+       int flags = TEXF_RENDERTARGET | TEXF_CLAMP;
+       if (filter)
+               flags |= TEXF_FORCELINEAR | TEXF_COMPARE;
+       else
+               flags |= TEXF_FORCENEAREST;
+       if (precision <= 16)
+               flags |= TEXF_LOWPRECISION;
+       return flags;
+}
+
+rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), -1, TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
+}
+
+rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), -1, TEXTYPE_SHADOWMAP, GLTEXTURETYPE_2D, NULL, NULL);
+}
+
+rtexture_t *R_LoadTextureShadowMapCube(rtexturepool_t *rtexturepool, const char *identifier, int width, int precision, qboolean filter)
+{
+    return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, R_ShadowMapTextureFlags(precision, filter), -1, TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
+}
+
+int R_SaveTextureDDSFile(rtexture_t *rt, const char *filename, qboolean skipuncompressed)
+{
+       gltexture_t *glt = (gltexture_t *)rt;
+       unsigned char *dds;
+       int oldbindtexnum;
+       int bytesperpixel = 0;
+       int bytesperblock = 0;
+       int dds_flags;
+       int dds_format_flags;
+       int dds_caps1;
+       int dds_caps2;
+       int ret;
+       int mip;
+       int mipmaps;
+       int mipinfo[16][4];
+       int ddssize = 128;
+       GLint internalformat;
+       const char *ddsfourcc;
+       if (!rt)
+               return -1; // NULL pointer
+       if (!strcmp(gl_version, "2.0.5885 WinXP Release"))
+               return -2; // broken driver - crashes on reading internal format
+       if (!qglGetTexLevelParameteriv)
+               return -2;
+       GL_ActiveTexture(0);
+       oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+       qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+       qglGetTexLevelParameteriv(gltexturetypeenums[glt->texturetype], 0, GL_TEXTURE_INTERNAL_FORMAT, &internalformat);
+       switch(internalformat)
+       {
+       default: ddsfourcc = NULL;bytesperpixel = 4;break;
+       case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+       case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: ddsfourcc = "DXT1";bytesperblock = 8;break;
+       case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: ddsfourcc = "DXT3";bytesperblock = 16;break;
+       case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: ddsfourcc = "DXT5";bytesperblock = 16;break;
+       }
+       if (!bytesperblock && skipuncompressed)
+               return -3; // skipped
+       memset(mipinfo, 0, sizeof(mipinfo));
+       mipinfo[0][0] = glt->tilewidth;
+       mipinfo[0][1] = glt->tileheight;
+       mipmaps = 1;
+       if (glt->flags & TEXF_MIPMAP)
+       {
+               for (mip = 1;mip < 16;mip++)
+               {
+                       mipinfo[mip][0] = mipinfo[mip-1][0] > 1 ? mipinfo[mip-1][0] >> 1 : 1;
+                       mipinfo[mip][1] = mipinfo[mip-1][1] > 1 ? mipinfo[mip-1][1] >> 1 : 1;
+                       if (mipinfo[mip][0] == 1 && mipinfo[mip][1] == 1)
+                       {
+                               mip++;
+                               break;
+                       }
+               }
+               mipmaps = mip;
+       }
+       for (mip = 0;mip < mipmaps;mip++)
+       {
+               mipinfo[mip][2] = bytesperblock ? ((mipinfo[mip][0]+3)/4)*((mipinfo[mip][1]+3)/4)*bytesperblock : mipinfo[mip][0]*mipinfo[mip][1]*bytesperpixel;
+               mipinfo[mip][3] = ddssize;
+               ddssize += mipinfo[mip][2];
+       }
+       dds = (unsigned char *)Mem_Alloc(tempmempool, ddssize);
+       if (!dds)
+               return -4;
+       dds_caps1 = 0x1000; // DDSCAPS_TEXTURE
+       dds_caps2 = 0;
+       if (bytesperblock)
+       {
+               dds_flags = 0x81007; // DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT | DDSD_LINEARSIZE
+               dds_format_flags = 0x4; // DDPF_FOURCC
+       }
+       else
        {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+               dds_flags = 0x100F; // DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PITCH
+               dds_format_flags = 0x41; // DDPF_RGB | DDPF_ALPHAPIXELS
+       }
+       if (mipmaps)
+       {
+               dds_flags |= 0x20000; // DDSD_MIPMAPCOUNT
+               dds_caps1 |= 0x400008; // DDSCAPS_MIPMAP | DDSCAPS_COMPLEX
+       }
+       memcpy(dds, "DDS ", 4);
+       StoreLittleLong(dds+4, ddssize);
+       StoreLittleLong(dds+8, dds_flags);
+       StoreLittleLong(dds+12, mipinfo[0][1]); // height
+       StoreLittleLong(dds+16, mipinfo[0][0]); // width
+       StoreLittleLong(dds+24, 1); // depth
+       StoreLittleLong(dds+28, mipmaps); // mipmaps
+       StoreLittleLong(dds+76, 32); // format size
+       StoreLittleLong(dds+80, dds_format_flags);
+       StoreLittleLong(dds+108, dds_caps1);
+       StoreLittleLong(dds+112, dds_caps2);
+       if (bytesperblock)
+       {
+               StoreLittleLong(dds+20, mipinfo[0][2]); // linear size
+               memcpy(dds+84, ddsfourcc, 4);
+               for (mip = 0;mip < mipmaps;mip++)
+               {
+                       qglGetCompressedTexImageARB(gltexturetypeenums[glt->texturetype], mip, dds + mipinfo[mip][3]);CHECKGLERROR
+               }
        }
        else
        {
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
-               glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
+               StoreLittleLong(dds+20, mipinfo[0][0]*bytesperpixel); // pitch
+               StoreLittleLong(dds+88, bytesperpixel*8); // bits per pixel
+               dds[94] = dds[97] = dds[100] = dds[107] = 255; // bgra byte order masks
+               for (mip = 0;mip < mipmaps;mip++)
+               {
+                       qglGetTexImage(gltexturetypeenums[glt->texturetype], mip, GL_BGRA, GL_UNSIGNED_BYTE, dds + mipinfo[mip][3]);CHECKGLERROR
+               }
        }
-       glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+       ret = FS_WriteFile(filename, dds, ddssize);
+       Mem_Free(dds);
+       return ret ? ddssize : -5;
 }
 
-/*
-================
-GL_LoadTexture
-================
-*/
-int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha, int bytesperpixel)
+rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filename, int flags, qboolean *hasalphaflag, float *avgcolor, int miplevel) // DDS textures are opaque, so miplevel isn't a pointer but just seen as a hint
 {
-       unsigned short  crc;
-       int                             i, width2, height2, width3, height3, w, h, mip;
-       gltexture_t             *glt;
+       int i, size, dds_format_flags, dds_miplevels, dds_width, dds_height;
+       //int dds_flags;
+       textype_t textype;
+       int bytesperblock, bytesperpixel;
+       int mipcomplete;
+       gltexture_t *glt;
+       gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
+       textypeinfo_t *texinfo;
+       int mip, mipwidth, mipheight, mipsize;
+       unsigned int c;
+       GLint oldbindtexnum = 0;
+       const unsigned char *mippixels, *ddspixels;
+       unsigned char *dds;
+       fs_offset_t ddsfilesize;
+       unsigned int ddssize;
+
+       if (cls.state == ca_dedicated)
+               return NULL;
+
+       dds = FS_LoadFile(filename, tempmempool, true, &ddsfilesize);
+       ddssize = ddsfilesize;
+
+       if (!dds)
+       {
+               Log_Printf("ddstexturefailures.log", "%s\n", filename);
+               return NULL; // not found
+       }
+
+       if (ddsfilesize <= 128 || memcmp(dds, "DDS ", 4) || ddssize < (unsigned int)BuffLittleLong(dds+4) || BuffLittleLong(dds+76) != 32)
+       {
+               Mem_Free(dds);
+               Con_Printf("^1%s: not a DDS image\n", filename);
+               return NULL;
+       }
 
-       if (isDedicated)
-               return 1;
+       //dds_flags = BuffLittleLong(dds+8);
+       dds_format_flags = BuffLittleLong(dds+80);
+       dds_miplevels = (BuffLittleLong(dds+108) & 0x400000) ? BuffLittleLong(dds+28) : 1;
+       dds_width = BuffLittleLong(dds+16);
+       dds_height = BuffLittleLong(dds+12);
+       ddspixels = dds + 128;
 
-       // 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
-       if (identifier[0])
+       flags &= ~TEXF_ALPHA;
+       if ((dds_format_flags & 0x40) && BuffLittleLong(dds+88) == 32)
        {
-               for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
+               // very sloppy BGRA 32bit identification
+               textype = TEXTYPE_BGRA;
+               bytesperblock = 0;
+               bytesperpixel = 4;
+               size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(dds_width, dds_height), bytesperpixel);
+               if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
                {
-                       if (!strcmp (identifier, glt->identifier))
-                       {
-                               // LordHavoc: everyone hates cache mismatchs, so I fixed it
-                               if (crc != glt->crc || width != glt->width || height != glt->height)
-                               {
-                                       Con_DPrintf("GL_LoadTexture: cache mismatch, replacing old texture\n");
-                                       goto GL_LoadTexture_setup; // drop out with glt pointing to the texture to replace
-                                       //Sys_Error ("GL_LoadTexture: cache mismatch");
-                               }
-                               if ((gl_lerpimages.value != 0) != glt->lerped)
-                                       goto GL_LoadTexture_setup; // drop out with glt pointing to the texture to replace
-                               return glt->texnum;
-                       }
-               }
-       }
-       // LordHavoc: although this could be an else condition as it was in the original id code,
-       //            it is more clear this way
-       // 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++];
-
-       strcpy (glt->identifier, identifier);
-       glt->texnum = texture_extension_number;
-       texture_extension_number++;
-// LordHavoc: label to drop out of the loop into the setup code
-GL_LoadTexture_setup:
-       // 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) gl_picmip.value;
-       height3 = height2 >> (int) gl_picmip.value;
-       while (width3 > (int) gl_max_size.value) width3 >>= 1;
-       while (height3 > (int) gl_max_size.value) height3 >>= 1;
-       if (width3 < 1) width3 = 1;
-       if (height3 < 1) height3 = 1;
-
-       // final storage
-       GL_AllocTexels(glt, width3, height3, mipmap);
-       glt->crc = crc; // LordHavoc: used to verify textures are identical
-       glt->width = width;
-       glt->height = height;
-       glt->mipmap = mipmap;
-       glt->bytesperpixel = bytesperpixel;
-       glt->lerped = gl_lerpimages.value != 0;
-       glt->alpha = false; // updated later
-       if (width == width3 && height == height3) // perfect match
-       {
-               if (bytesperpixel == 1) // 8bit
-                       Image_Copy8bitRGBA(data, glt->texels[0], width*height, d_8to24table);
-               else
-                       Image_CopyRGBAGamma(data, glt->texels[0], width*height);
+                       Mem_Free(dds);
+                       Con_Printf("^1%s: invalid BGRA DDS image\n", filename);
+                       return NULL;
+               }
+               // check alpha
+               for (i = 3;i < size;i += 4)
+                       if (ddspixels[i] < 255)
+                               break;
+               if (i >= size)
+                       flags &= ~TEXF_ALPHA;
        }
-       else if (width == width2 && height == height2) // perfect match for top level, but needs to be reduced
+       else if (!memcmp(dds+84, "DXT1", 4))
        {
-               byte *temptexels2;
-               temptexels2 = malloc(width2*height2*4); // scaleup buffer
-               if (bytesperpixel == 1) // 8bit
-                       Image_Copy8bitRGBA(data, temptexels2, width*height, d_8to24table);
+               // we need to find out if this is DXT1 (opaque) or DXT1A (transparent)
+               // LordHavoc: it is my belief that this does not infringe on the
+               // patent because it is not decoding pixels...
+               textype = TEXTYPE_DXT1;
+               bytesperblock = 8;
+               bytesperpixel = 0;
+               //size = ((dds_width+3)/4)*((dds_height+3)/4)*bytesperblock;
+               size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+               if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+               {
+                       Mem_Free(dds);
+                       Con_Printf("^1%s: invalid DXT1 DDS image\n", filename);
+                       return NULL;
+               }
+               for (i = 0;i < size;i += bytesperblock)
+                       if (ddspixels[i+0] + ddspixels[i+1] * 256 <= ddspixels[i+2] + ddspixels[i+3] * 256)
+                               break;
+               if (i < size)
+                       textype = TEXTYPE_DXT1A;
                else
-                       Image_CopyRGBAGamma(data, temptexels2, width*height);
-               while (width2 > width3 || height2 > height3)
-               {
-                       w = width2;h = height2;
-                       if (width2 > width3) width2 >>= 1;
-                       if (height2 > height3) height2 >>= 1;
-                       if (width2 <= width3 && height2 <= height3) // size achieved
-                               GL_MipReduce(temptexels2, glt->texels[0], w, h, width3, height3);
-                       else
-                               GL_MipReduce(temptexels2, temptexels2, w, h, width3, height3);
+                       flags &= ~TEXF_ALPHA;
+       }
+       else if (!memcmp(dds+84, "DXT3", 4))
+       {
+               textype = TEXTYPE_DXT3;
+               bytesperblock = 16;
+               bytesperpixel = 0;
+               size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+               if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+               {
+                       Mem_Free(dds);
+                       Con_Printf("^1%s: invalid DXT3 DDS image\n", filename);
+                       return NULL;
                }
-               free(temptexels2);
        }
-       else // scaling...
+       else if (!memcmp(dds+84, "DXT5", 4))
        {
-               byte *temptexels;
-               // pre-scaleup buffer
-               temptexels = malloc(width*height*4);
-               if (bytesperpixel == 1) // 8bit
-                       Image_Copy8bitRGBA(data, temptexels, width*height, d_8to24table);
+               textype = TEXTYPE_DXT5;
+               bytesperblock = 16;
+               bytesperpixel = 0;
+               size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+               if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+               {
+                       Mem_Free(dds);
+                       Con_Printf("^1%s: invalid DXT5 DDS image\n", filename);
+                       return NULL;
+               }
+       }
+       else
+       {
+               Mem_Free(dds);
+               Con_Printf("^1%s: unrecognized/unsupported DDS format\n", filename);
+               return NULL;
+       }
+
+       // return whether this texture is transparent
+       if (hasalphaflag)
+               *hasalphaflag = (flags & TEXF_ALPHA) != 0;
+
+       // calculate average color if requested
+       if (avgcolor)
+       {
+               float f;
+               Vector4Clear(avgcolor);
+               if (bytesperblock)
+               {
+                       for (i = bytesperblock == 16 ? 8 : 0;i < size;i += bytesperblock)
+                       {
+                               c = ddspixels[i] + 256*ddspixels[i+1] + 65536*ddspixels[i+2] + 16777216*ddspixels[i+3];
+                               avgcolor[0] += ((c >> 11) & 0x1F) + ((c >> 27) & 0x1F);
+                               avgcolor[1] += ((c >>  5) & 0x3F) + ((c >> 21) & 0x3F);
+                               avgcolor[2] += ((c      ) & 0x1F) + ((c >> 16) & 0x1F);
+                       }
+                       f = (float)bytesperblock / size;
+                       avgcolor[0] *= (0.5f / 31.0f) * f;
+                       avgcolor[1] *= (0.5f / 63.0f) * f;
+                       avgcolor[2] *= (0.5f / 31.0f) * f;
+                       avgcolor[3] = 1; // too hard to calculate
+               }
                else
-                       Image_CopyRGBAGamma(data, temptexels, width*height);
-               if (width2 != width3 || height2 != height3) // reduced by gl_pic_mip or gl_max_size
-               {
-                       byte *temptexels2;
-                       temptexels2 = malloc(width2*height2*4); // scaleup buffer
-                       GL_ResampleTexture(temptexels, width, height, temptexels2, width2, height2);
-                       while (width2 > width3 || height2 > height3)
-                       {
-                               w = width2;h = height2;
-                               if (width2 > width3) width2 >>= 1;
-                               if (height2 > height3) height2 >>= 1;
-                               if (width2 <= width3 && height2 <= height3) // size achieved
-                                       GL_MipReduce(temptexels2, glt->texels[0], w, h, width3, height3);
-                               else
-                                       GL_MipReduce(temptexels2, temptexels2, w, h, width3, height3);
+               {
+                       for (i = 0;i < size;i += 4)
+                       {
+                               avgcolor[0] += ddspixels[i+2];
+                               avgcolor[1] += ddspixels[i+1];
+                               avgcolor[2] += ddspixels[i];
+                               avgcolor[3] += ddspixels[i+3];
                        }
-                       free(temptexels2);
+                       f = (1.0f / 255.0f) * bytesperpixel / size;
+                       avgcolor[0] *= f;
+                       avgcolor[1] *= f;
+                       avgcolor[2] *= f;
+                       avgcolor[3] *= f;
                }
-               else // copy directly
-                       GL_ResampleTexture(temptexels, width, height, glt->texels[0], width2, height2);
-               free(temptexels);
        }
-       if (alpha)
+
+       // this is where we apply gl_picmip
+       mippixels = ddspixels;
+       mipwidth = dds_width;
+       mipheight = dds_height;
+       while(miplevel >= 1 && dds_miplevels >= 1)
+       {
+               if (mipwidth <= 1 && mipheight <= 1)
+                       break;
+               mipsize = bytesperblock ? ((mipwidth+3)/4)*((mipheight+3)/4)*bytesperblock : mipwidth*mipheight*bytesperpixel;
+               mippixels += mipsize; // just skip
+               --dds_miplevels;
+               --miplevel;
+               if (mipwidth > 1)
+                       mipwidth >>= 1;
+               if (mipheight > 1)
+                       mipheight >>= 1;
+       }
+
+       if (dds_miplevels > 1)
+               flags |= TEXF_MIPMAP;
+       else
+               flags &= ~TEXF_MIPMAP;
+
+       // if S3TC is not supported, there's very little we can do about it
+       if (bytesperblock && !vid.support.ext_texture_compression_s3tc)
+       {
+               Mem_Free(dds);
+               Con_Printf("^1%s: DDS file is compressed but OpenGL driver does not support S3TC\n", filename);
+               return NULL;
+       }
+
+       texinfo = R_GetTexTypeInfo(textype, flags);
+
+       glt = (gltexture_t *)Mem_ExpandableArray_AllocRecord(&texturearray);
+       strlcpy (glt->identifier, filename, sizeof(glt->identifier));
+       glt->pool = pool;
+       glt->chain = pool->gltchain;
+       pool->gltchain = glt;
+       glt->inputwidth = mipwidth;
+       glt->inputheight = mipheight;
+       glt->inputdepth = 1;
+       glt->flags = flags;
+       glt->textype = texinfo;
+       glt->texturetype = GLTEXTURETYPE_2D;
+       glt->inputdatasize = ddssize;
+       glt->glinternalformat = texinfo->glinternalformat;
+       glt->glformat = texinfo->glformat;
+       glt->gltype = texinfo->gltype;
+       glt->bytesperpixel = texinfo->internalbytesperpixel;
+       glt->sides = 1;
+       glt->gltexturetypeenum = gltexturetypeenums[glt->texturetype];
+       glt->tilewidth = mipwidth;
+       glt->tileheight = mipheight;
+       glt->tiledepth = 1;
+       glt->miplevels = dds_miplevels;
+
+       // texture uploading can take a while, so make sure we're sending keepalives
+       CL_KeepaliveMessage(false);
+
+       // create the texture object
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               CHECKGLERROR
+               GL_ActiveTexture(0);
+               oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+               qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+               qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+               break;
+       case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+               {
+                       D3DFORMAT d3dformat;
+                       D3DPOOL d3dpool;
+                       DWORD d3dusage;
+                       switch(textype)
+                       {
+                       case TEXTYPE_BGRA: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8R8G8B8 : D3DFMT_X8R8G8B8;break;
+                       case TEXTYPE_DXT1: case TEXTYPE_DXT1A: d3dformat = D3DFMT_DXT1;break;
+                       case TEXTYPE_DXT3: d3dformat = D3DFMT_DXT3;break;
+                       case TEXTYPE_DXT5: d3dformat = D3DFMT_DXT5;break;
+                       default: d3dformat = D3DFMT_A8R8G8B8;Host_Error("R_LoadTextureDDSFile: unsupported texture type %i when picking D3DFMT", (int)textype);break;
+                       }
+                       d3dusage = 0;
+                       d3dpool = D3DPOOL_MANAGED;
+                       IDirect3DDevice9_CreateTexture(vid_d3d9dev, glt->tilewidth, glt->tileheight, glt->miplevels, d3dusage, d3dformat, d3dpool, (IDirect3DTexture9 **)&glt->d3dtexture, NULL);
+               }
+#endif
+               break;
+       case RENDERPATH_D3D10:
+               Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       case RENDERPATH_D3D11:
+               Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       }
+
+       // upload the texture
+       // we need to restore the texture binding after finishing the upload
+       mipcomplete = false;
+
+       for (mip = 0;mip <= dds_miplevels;mip++) // <= to include the not-counted "largest" miplevel
        {
-               byte    *in = glt->texels[0] + 3;
-               for (i = 0;i < width*height;i++, in += 4)
-                       if (*in < 255)
+               mipsize = bytesperblock ? ((mipwidth+3)/4)*((mipheight+3)/4)*bytesperblock : mipwidth*mipheight*bytesperpixel;
+               if (mippixels + mipsize > dds + ddssize)
+                       break;
+               switch(vid.renderpath)
+               {
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_CGGL:
+                       if (bytesperblock)
+                       {
+                               qglCompressedTexImage2DARB(GL_TEXTURE_2D, mip, glt->glinternalformat, mipwidth, mipheight, 0, mipsize, mippixels);CHECKGLERROR
+                       }
+                       else
+                       {
+                               qglTexImage2D(GL_TEXTURE_2D, mip, glt->glinternalformat, mipwidth, mipheight, 0, glt->glformat, glt->gltype, mippixels);CHECKGLERROR
+                       }
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
                        {
-                               glt->alpha = true;
+                               D3DLOCKED_RECT d3dlockedrect;
+                               if (IDirect3DTexture9_LockRect((IDirect3DTexture9*)glt->d3dtexture, mip, &d3dlockedrect, NULL, 0) == D3D_OK && d3dlockedrect.pBits)
+                               {
+                                       memcpy(d3dlockedrect.pBits, mippixels, mipsize);
+                                       IDirect3DTexture9_UnlockRect((IDirect3DTexture9*)glt->d3dtexture, mip);
+                               }
                                break;
                        }
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               }
+               mippixels += mipsize;
+               if (mipwidth <= 1 && mipheight <= 1)
+               {
+                       mipcomplete = true;
+                       break;
+               }
+               if (mipwidth > 1)
+                       mipwidth >>= 1;
+               if (mipheight > 1)
+                       mipheight >>= 1;
        }
-       // this loop is skipped if there are no mipmaps to generate
-       for (mip = 1;mip < MAXMIPS && glt->texels[mip];mip++)
-               GL_MipReduce(glt->texels[mip-1], glt->texels[mip], glt->texelsize[mip-1][0], glt->texelsize[mip-1][1], 1, 1);
-       GL_UploadTexture(glt);
 
-//     if (bytesperpixel == 1) // 8bit
-//             GL_Upload8 (data, width, height, mipmap, alpha);
-//     else // 32bit
-//             GL_Upload32 (data, width, height, mipmap, true);
+       // after upload we have to set some parameters...
+       switch(vid.renderpath)
+       {
+       case RENDERPATH_GL11:
+       case RENDERPATH_GL13:
+       case RENDERPATH_GL20:
+       case RENDERPATH_CGGL:
+               if (dds_miplevels >= 1 && !mipcomplete)
+               {
+                       // need to set GL_TEXTURE_MAX_LEVEL
+                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_LEVEL, dds_miplevels - 1);CHECKGLERROR
+               }
+               GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
+               qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+               break;
+       case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+               glt->d3daddressw = 0;
+               if (glt->flags & TEXF_CLAMP)
+               {
+                       glt->d3daddressu = D3DTADDRESS_CLAMP;
+                       glt->d3daddressv = D3DTADDRESS_CLAMP;
+                       if (glt->tiledepth > 1)
+                               glt->d3daddressw = D3DTADDRESS_CLAMP;
+               }
+               else
+               {
+                       glt->d3daddressu = D3DTADDRESS_WRAP;
+                       glt->d3daddressv = D3DTADDRESS_WRAP;
+                       if (glt->tiledepth > 1)
+                               glt->d3daddressw = D3DTADDRESS_WRAP;
+               }
+               glt->d3dmipmaplodbias = 0;
+               glt->d3dmaxmiplevel = 0;
+               glt->d3dmaxmiplevelfilter = 0;
+               if (glt->flags & TEXF_MIPMAP)
+               {
+                       glt->d3dminfilter = d3d_filter_mipmin;
+                       glt->d3dmagfilter = d3d_filter_mipmag;
+                       glt->d3dmipfilter = d3d_filter_mipmix;
+               }
+               else
+               {
+                       glt->d3dminfilter = d3d_filter_flatmin;
+                       glt->d3dmagfilter = d3d_filter_flatmag;
+                       glt->d3dmipfilter = d3d_filter_flatmix;
+               }
+#endif
+               break;
+       case RENDERPATH_D3D10:
+               Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       case RENDERPATH_D3D11:
+               Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+               break;
+       }
 
-       return glt->texnum;
+       Mem_Free(dds);
+       return (rtexture_t *)glt;
 }
 
-/*
-================
-GL_LoadPicTexture
-================
-*/
-int GL_LoadPicTexture (qpic_t *pic)
+int R_TextureWidth(rtexture_t *rt)
 {
-       return GL_LoadTexture ("", pic->width, pic->height, pic->data, false, true, 1);
+       return rt ? ((gltexture_t *)rt)->inputwidth : 0;
 }
 
-int GL_GetTextureSlots (int count)
+int R_TextureHeight(rtexture_t *rt)
 {
-       gltexture_t             *glt, *first;
+       return rt ? ((gltexture_t *)rt)->inputheight : 0;
+}
+
+void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height)
+{
+       gltexture_t *glt = (gltexture_t *)rt;
+       if (data == NULL)
+               Host_Error("R_UpdateTexture: no data supplied");
+       if (glt == NULL)
+               Host_Error("R_UpdateTexture: no texture supplied");
+       if (!glt->texnum && !glt->d3dtexture)
+       {
+               Con_Printf("R_UpdateTexture: texture %p \"%s\" in pool %p has not been uploaded yet", glt, glt->identifier, glt->pool);
+               return;
+       }
+       // update part of the texture
+       if (glt->bufferpixels)
+       {
+               int j;
+               int bpp = glt->bytesperpixel;
+               int inputskip = width*bpp;
+               int outputskip = glt->tilewidth*bpp;
+               const unsigned char *input = data;
+               unsigned char *output = glt->bufferpixels;
+               if (x < 0)
+               {
+                       width += x;
+                       input -= x*bpp;
+                       x = 0;
+               }
+               if (y < 0)
+               {
+                       height += y;
+                       input -= y*inputskip;
+                       y = 0;
+               }
+               if (width > glt->tilewidth - x)
+                       width = glt->tilewidth - x;
+               if (height > glt->tileheight - y)
+                       height = glt->tileheight - y;
+               if (width < 1 || height < 1)
+                       return;
+               glt->dirty = true;
+               glt->buffermodified = true;
+               output += y*outputskip + x*bpp;
+               for (j = 0;j < height;j++, output += outputskip, input += inputskip)
+                       memcpy(output, input, width*bpp);
+       }
+       else
+               R_Upload(glt, data, x, y, 0, width, height, 1);
+}
+
+int R_RealGetTexture(rtexture_t *rt)
+{
+       if (rt)
+       {
+               gltexture_t *glt;
+               glt = (gltexture_t *)rt;
+               if (glt->flags & GLTEXF_DYNAMIC)
+                       R_UpdateDynamicTexture(glt);
+               if (glt->buffermodified && glt->bufferpixels)
+               {
+                       glt->buffermodified = false;
+                       R_Upload(glt, glt->bufferpixels, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth);
+               }
+               glt->dirty = false;
+               return glt->texnum;
+       }
+       else
+               return 0;
+}
+
+void R_ClearTexture (rtexture_t *rt)
+{
+       gltexture_t *glt = (gltexture_t *)rt;
+
+       R_Upload( glt, NULL, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth );
+}
 
-       first = glt = &gltextures[numgltextures];
-       while (count--)
+int R_PicmipForFlags(int flags)
+{
+       int miplevel = 0;
+       if(flags & TEXF_PICMIP)
        {
-               glt->identifier[0] = 0;
-               glt->texnum = texture_extension_number++;
-               glt->crc = 0;
-               glt->width = 0;
-               glt->height = 0;
-               glt->bytesperpixel = 0;
-               glt++;
-               numgltextures++;
+               miplevel += gl_picmip.integer;
+               if (flags & TEXF_ISWORLD)
+               {
+                       if (r_picmipworld.integer)
+                               miplevel += gl_picmip_world.integer;
+                       else
+                               miplevel = 0;
+               }
+               else if (flags & TEXF_ISSPRITE)
+               {
+                       if (r_picmipsprites.integer)
+                               miplevel += gl_picmip_sprites.integer;
+                       else
+                               miplevel = 0;
+               }
+               else
+                       miplevel += gl_picmip_other.integer;
        }
-       return first->texnum;
+       return miplevel;
 }