]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_textures.c
added indirection cube map for shadowmapping and revised filtering modes
[xonotic/darkplaces.git] / gl_textures.c
index 819275406b5f811de5bb968860d75926bfd6580b..3cd9df68bb083c12ae3402827183486a1f1f1db6 100644 (file)
@@ -2,63 +2,81 @@
 #include "quakedef.h"
 #include "image.h"
 #include "jpeg.h"
-
-cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048"};
-cvar_t gl_max_scrapsize = {CVAR_SAVE, "gl_max_scrapsize", "256"};
-cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0"};
-cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1"};
-cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1"};
-cvar_t  gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1"};
+#include "image_png.h"
+
+cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, note: this is automatically reduced to match video card capabilities (such as 256 on 3Dfx cards before Voodoo4/5)"};
+cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0", "reduces resolution of textures by powers of 2, for example 1 will halve width/height, reducing texture memory usage by 75%"};
+cvar_t r_lerpimages = {CVAR_SAVE, "r_lerpimages", "1", "bilinear filters images when scaling them up to power of 2 size (mode 1), looks better than glquake (mode 0)"};
+cvar_t r_precachetextures = {CVAR_SAVE, "r_precachetextures", "1", "0 = never upload textures until used, 1 = upload most textures before use (exceptions: rarely used skin colormap layers), 2 = upload all textures before use (can increase texture memory usage significantly)"};
+cvar_t gl_texture_anisotropy = {CVAR_SAVE, "gl_texture_anisotropy", "1", "anisotropic filtering quality (if supported by hardware), 1 sample (no anisotropy) and 8 sample (8 tap anisotropy) are recommended values"};
+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)"};
 
 int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
 int            gl_filter_mag = GL_LINEAR;
 
 
 static mempool_t *texturemempool;
-static mempool_t *texturedatamempool;
-static mempool_t *textureprocessingmempool;
 
 // note: this must not conflict with TEXF_ flags in r_textures.h
 // cleared when a texture is uploaded
-#define GLTEXF_UPLOAD 0x00010000
+#define GLTEXF_UPLOAD          0x00010000
 // bitmask for mismatch checking
 #define GLTEXF_IMPORTANTBITS (0)
 // set when image is uploaded and freed
-#define GLTEXF_DESTROYED 0x00040000
-
-// size of images which hold fragment textures, ignores picmip and max_size
-static int block_size;
+#define GLTEXF_DESTROYED       0x00040000
+// dynamic texture (treat texnum == 0 differently)
+#define GLTEXF_DYNAMIC         0x00080000
 
-typedef struct
+typedef struct textypeinfo_s
 {
-       int textype;
+       textype_t textype;
        int inputbytesperpixel;
        int internalbytesperpixel;
+       float glinternalbytesperpixel;
        int glformat;
        int glinternalformat;
+       int gltype;
 }
 textypeinfo_t;
 
-static textypeinfo_t textype_palette       = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 3};
-static textypeinfo_t textype_rgb           = {TEXTYPE_RGB    , 3, 3, GL_RGB    , 3};
-static textypeinfo_t textype_rgba          = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 3};
-static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   , 4};
-static textypeinfo_t textype_rgba_alpha    = {TEXTYPE_RGBA   , 4, 4, GL_RGBA   , 4};
-static textypeinfo_t textype_dsdt          = {TEXTYPE_DSDT   , 2, 2, GL_DSDT_NV, GL_DSDT8_NV};
-
-// a tiling texture (most common type)
-#define GLIMAGETYPE_TILE 0
-// a fragments texture (contains one or more fragment textures)
-#define GLIMAGETYPE_FRAGMENTS 1
-
-#define GLTEXTURETYPE_1D 0
-#define GLTEXTURETYPE_2D 1
-#define GLTEXTURETYPE_3D 2
-#define GLTEXTURETYPE_CUBEMAP 3
-
-static int gltexturetypeenums[4] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB};
-static int gltexturetypebindingenums[4] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB};
-static int gltexturetypedimensions[4] = {1, 2, 3, 2};
+static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 3, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 4, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_palette_compress       = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 3, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 4, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_rgba_compress          = {TEXTYPE_RGBA   , 4, 4, 0.5f, GL_RGBA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_rgba_alpha_compress    = {TEXTYPE_RGBA   , 4, 4, 1.0f, GL_RGBA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_bgra                   = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 3, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_bgra_alpha             = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 4, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_bgra_compress          = {TEXTYPE_BGRA   , 4, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_bgra_alpha_compress    = {TEXTYPE_BGRA   , 4, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_shadowmap              = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
+static textypeinfo_t textype_projection             = {TEXTYPE_PROJECTION,4,4,4.0f, GL_LUMINANCE_ALPHA, GL_LUMINANCE16_ALPHA16, GL_UNSIGNED_SHORT};
+
+typedef enum gltexturetype_e
+{
+       GLTEXTURETYPE_1D,
+       GLTEXTURETYPE_2D,
+       GLTEXTURETYPE_3D,
+       GLTEXTURETYPE_CUBEMAP,
+       GLTEXTURETYPE_RECTANGLE,
+       GLTEXTURETYPE_TOTAL
+}
+gltexturetype_t;
+
+static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
+static int gltexturetypebindingenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_BINDING_1D, GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB};
+static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {1, 2, 3, 2, 2};
 static int cubemapside[6] =
 {
        GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
@@ -69,43 +87,30 @@ static int cubemapside[6] =
        GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
 };
 
-// a gltextureimage can have one (or more if fragments) gltextures inside
-typedef struct gltextureimage_s
-{
-       struct gltextureimage_s *imagechain;
-       int texturecount;
-       int type; // one of the GLIMAGETYPE_ values
-       int texturetype; // one of the GLTEXTURETYPE_ values
-       int sides; // 1 or 6 depending on texturetype
-       int texnum; // GL texture slot number
-       int width, height, depth; // 3D texture support
-       int bytesperpixel; // bytes per pixel
-       int glformat; // GL_RGB or GL_RGBA
-       int glinternalformat; // 3 or 4
-       int flags;
-       short *blockallocation; // fragment allocation (2D only)
-}
-gltextureimage_t;
-
 typedef struct gltexture_s
 {
        // this field is exposed to the R_GetTexture macro, for speed reasons
        // (must be identical in rtexture_t)
        int texnum; // GL texture slot number
 
+       // dynamic texture stuff [11/22/2007 Black]
+       // used to hold the texture number of dirty textures   
+       int dirtytexnum;
+       updatecallback_t updatecallback;
+       void *updatacallback_data;
+       // --- [11/22/2007 Black]
+
        // pointer to texturepool (check this to see if the texture is allocated)
        struct gltexturepool_s *pool;
        // pointer to next texture in texturepool chain
        struct gltexture_s *chain;
-       // pointer into gltextureimage array
-       gltextureimage_t *image;
        // name of the texture (this might be removed someday), no duplicates
-       char *identifier;
-       // location in the image, and size
-       int x, y, z, width, height, depth;
+       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)
-       qbyte *inputtexels;
+       unsigned char *inputtexels;
        // original data size in *inputtexels
        int inputdatasize;
        // flags supplied to the LoadTexture function
@@ -117,6 +122,19 @@ typedef struct gltexture_s
        int texturetype;
        // palette if the texture is TEXTYPE_PALETTE
        const unsigned int *palette;
+       // actual stored texture size after gl_picmip and gl_max_size are applied
+       // (power of 2 if gl_support_arb_texture_non_power_of_two is not supported)
+       int tilewidth, tileheight, tiledepth;
+       // 1 or 6 depending on texturetype
+       int sides;
+       // bytes per pixel
+       int bytesperpixel;
+       // GL_RGB or GL_RGBA 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;
 
@@ -125,7 +143,6 @@ gltexture_t;
 typedef struct gltexturepool_s
 {
        unsigned int sentinel;
-       struct gltextureimage_s *imagechain;
        struct gltexture_s *gltchain;
        struct gltexturepool_s *next;
 }
@@ -133,48 +150,121 @@ gltexturepool_t;
 
 static gltexturepool_t *gltexturepoolchain = NULL;
 
-static qbyte *resizebuffer = NULL, *colorconvertbuffer;
+static unsigned char *resizebuffer = NULL, *colorconvertbuffer;
 static int resizebuffersize = 0;
-static qbyte *texturebuffer;
+static const unsigned char *texturebuffer;
 static int texturebuffersize = 0;
 
-static int realmaxsize = 0;
-
-static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
+static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
 {
-       if (flags & TEXF_ALPHA)
+       if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
        {
-               switch(textype)
+               if (flags & TEXF_ALPHA)
                {
-               case TEXTYPE_PALETTE:
-                       return &textype_palette_alpha;
-               case TEXTYPE_RGB:
-                       Host_Error("R_GetTexTypeInfo: RGB format has no alpha, TEXF_ALPHA not allowed\n");
-                       return NULL;
-               case TEXTYPE_RGBA:
-                       return &textype_rgba_alpha;
-               default:
-                       Host_Error("R_GetTexTypeInfo: unknown texture format\n");
-                       return NULL;
+                       switch(textype)
+                       {
+                       case TEXTYPE_PALETTE:
+                               return &textype_palette_alpha_compress;
+                       case TEXTYPE_RGBA:
+                               return &textype_rgba_alpha_compress;
+                       case TEXTYPE_BGRA:
+                               return &textype_bgra_alpha_compress;
+                       default:
+                               Host_Error("R_GetTexTypeInfo: unknown texture format");
+                               return NULL;
+                       }
+               }
+               else
+               {
+                       switch(textype)
+                       {
+                       case TEXTYPE_PALETTE:
+                               return &textype_palette_compress;
+                       case TEXTYPE_RGBA:
+                               return &textype_rgba_compress;
+                       case TEXTYPE_BGRA:
+                               return &textype_bgra_compress;
+                       default:
+                               Host_Error("R_GetTexTypeInfo: unknown texture format");
+                               return NULL;
+                       }
                }
        }
        else
        {
-               switch(textype)
+               if (flags & TEXF_ALPHA)
                {
-               case TEXTYPE_PALETTE:
-                       return &textype_palette;
-               case TEXTYPE_RGB:
-                       return &textype_rgb;
-               case TEXTYPE_RGBA:
-                       return &textype_rgba;
-               case TEXTYPE_DSDT:
-                       return &textype_dsdt;
-               default:
-                       Host_Error("R_GetTexTypeInfo: unknown texture format\n");
-                       return NULL;
+                       switch(textype)
+                       {
+                       case TEXTYPE_PALETTE:
+                               return &textype_palette_alpha;
+                       case TEXTYPE_RGBA:
+                               return &textype_rgba_alpha;
+                       case TEXTYPE_BGRA:
+                               return &textype_bgra_alpha;
+                       default:
+                               Host_Error("R_GetTexTypeInfo: unknown texture format");
+                               return NULL;
+                       }
+               }
+               else
+               {
+                       switch(textype)
+                       {
+                       case TEXTYPE_PALETTE:
+                               return &textype_palette;
+                       case TEXTYPE_RGBA:
+                               return &textype_rgba;
+                       case TEXTYPE_BGRA:
+                               return &textype_bgra;
+                       case TEXTYPE_SHADOWMAP:
+                               return &textype_shadowmap;
+                       case TEXTYPE_PROJECTION:
+                               return &textype_projection;
+                       default:
+                               Host_Error("R_GetTexTypeInfo: unknown texture format");
+                               return NULL;
+                       }
                }
        }
+       return NULL; // this line only to hush compiler warnings
+}
+
+// dynamic texture code [11/22/2007 Black]
+void R_MarkDirtyTexture(rtexture_t *rt) {
+       gltexture_t *glt = (gltexture_t*) rt;
+       if( !glt ) {
+               return;
+       }
+
+       // dont do anything if the texture is already dirty (and make sure this *is* a dynamic texture after all!)
+       if( !glt->dirtytexnum && glt->flags & GLTEXF_DYNAMIC ) {
+               glt->dirtytexnum = glt->texnum;
+               // mark it as dirty, so R_RealGetTexture gets called
+               glt->texnum = 0;
+       }
+}
+
+void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data) {
+       gltexture_t *glt = (gltexture_t*) rt;
+       if( !glt ) {
+               return;
+       }
+
+       glt->flags |= GLTEXF_DYNAMIC;
+       glt->updatecallback = updatecallback;
+       glt->updatacallback_data = data;
+       glt->dirtytexnum = 0;
+}
+
+static void R_UpdateDynamicTexture(gltexture_t *glt) {
+       glt->texnum = glt->dirtytexnum;
+       // reset dirtytexnum again (not dirty anymore)
+       glt->dirtytexnum = 0;
+       // TODO: now assert that t->texnum != 0 ?
+       if( glt->updatecallback ) {
+               glt->updatecallback( (rtexture_t*) glt, glt->updatacallback_data );
+       }
 }
 
 static void R_UploadTexture(gltexture_t *t);
@@ -201,81 +291,55 @@ int R_RealGetTexture(rtexture_t *rt)
        {
                gltexture_t *glt;
                glt = (gltexture_t *)rt;
+               if (glt->flags & GLTEXF_DYNAMIC)
+                       R_UpdateDynamicTexture(glt);
                if (glt->flags & GLTEXF_UPLOAD)
                        R_UploadTexture(glt);
-               glt->texnum = glt->image->texnum;
-               return glt->image->texnum;
+
+               return glt->texnum;
        }
        else
                return 0;
 }
 
+void R_PurgeTexture(rtexture_t *rt)
+{
+       if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
+               R_FreeTexture(rt);
+       }
+}
+
 void R_FreeTexture(rtexture_t *rt)
 {
        gltexture_t *glt, **gltpointer;
-       gltextureimage_t *image, **gltimagepointer;
 
        glt = (gltexture_t *)rt;
        if (glt == NULL)
-               Host_Error("R_FreeTexture: texture == NULL\n");
+               Host_Error("R_FreeTexture: texture == NULL");
 
        for (gltpointer = &glt->pool->gltchain;*gltpointer && *gltpointer != glt;gltpointer = &(*gltpointer)->chain);
        if (*gltpointer == glt)
                *gltpointer = glt->chain;
        else
-               Host_Error("R_FreeTexture: texture \"%s\" not linked in pool\n", glt->identifier);
+               Host_Error("R_FreeTexture: texture \"%s\" not linked in pool", glt->identifier);
 
-       // note: if freeing a fragment texture, this will not make the claimed
-       // space available for new textures unless all other fragments in the
-       // image are also freed
-       if (glt->image)
+       if (!(glt->flags & GLTEXF_UPLOAD))
        {
-               image = glt->image;
-               image->texturecount--;
-               if (image->texturecount < 1)
-               {
-                       for (gltimagepointer = &glt->pool->imagechain;*gltimagepointer && *gltimagepointer != image;gltimagepointer = &(*gltimagepointer)->imagechain);
-                       if (*gltimagepointer == image)
-                               *gltimagepointer = image->imagechain;
-                       else
-                               Host_Error("R_FreeTexture: image not linked in pool\n");
-                       if (image->texnum)
-                               qglDeleteTextures(1, &image->texnum);
-                       if (image->blockallocation)
-                               Mem_Free(image->blockallocation);
-                       Mem_Free(image);
-               }
+               CHECKGLERROR
+               qglDeleteTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
        }
 
-       if (glt->identifier)
-               Mem_Free(glt->identifier);
        if (glt->inputtexels)
                Mem_Free(glt->inputtexels);
        Mem_Free(glt);
 }
 
-/*
-static gltexture_t *R_FindTexture (gltexturepool_t *pool, char *identifier)
-{
-       gltexture_t     *glt;
-
-       if (!identifier)
-               return NULL;
-
-       for (glt = pool->gltchain;glt;glt = glt->chain)
-               if (glt->identifier && !strcmp (identifier, glt->identifier))
-                       return glt;
-
-       return NULL;
-}
-*/
-
 rtexturepool_t *R_AllocTexturePool(void)
 {
        gltexturepool_t *pool;
        if (texturemempool == NULL)
                return NULL;
-       pool = Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
+       pool = (gltexturepool_t *)Mem_Alloc(texturemempool, sizeof(gltexturepool_t));
        if (pool == NULL)
                return NULL;
        pool->next = gltexturepoolchain;
@@ -294,28 +358,26 @@ void R_FreeTexturePool(rtexturepool_t **rtexturepool)
        pool = (gltexturepool_t *)(*rtexturepool);
        *rtexturepool = NULL;
        if (pool->sentinel != TEXTUREPOOL_SENTINEL)
-               Host_Error("R_FreeTexturePool: pool already freed\n");
+               Host_Error("R_FreeTexturePool: pool already freed");
        for (poolpointer = &gltexturepoolchain;*poolpointer && *poolpointer != pool;poolpointer = &(*poolpointer)->next);
        if (*poolpointer == pool)
                *poolpointer = pool->next;
        else
-               Host_Error("R_FreeTexturePool: pool not linked\n");
+               Host_Error("R_FreeTexturePool: pool not linked");
        while (pool->gltchain)
                R_FreeTexture((rtexture_t *)pool->gltchain);
-       if (pool->imagechain)
-               Sys_Error("R_FreeTexturePool: not all images freed\n");
        Mem_Free(pool);
 }
 
 
-typedef struct
+typedef struct glmode_s
 {
        char *name;
        int minification, magnification;
 }
 glmode_t;
 
-static glmode_t modes[] =
+static glmode_t modes[6] =
 {
        {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
        {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
@@ -329,7 +391,7 @@ static void GL_TextureMode_f (void)
 {
        int i;
        GLint oldbindtexnum;
-       gltextureimage_t *image;
+       gltexture_t *glt;
        gltexturepool_t *pool;
 
        if (Cmd_Argc() == 1)
@@ -360,135 +422,186 @@ static void GL_TextureMode_f (void)
 
        // change all the existing mipmap texture objects
        // FIXME: force renderer(/client/something?) restart instead?
+       CHECKGLERROR
        for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
-               for (image = pool->imagechain;image;image = image->imagechain)
+               for (glt = pool->gltchain;glt;glt = glt->chain)
                {
                        // only update already uploaded images
-                       if (!(image->flags & GLTEXF_UPLOAD) && !(image->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
+                       if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
                        {
-                               qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
-                               qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
-                               if (image->flags & TEXF_MIPMAP)
-                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
+                               qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+                               qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+                               if (glt->flags & TEXF_MIPMAP)
+                               {
+                                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);CHECKGLERROR
+                               }
                                else
-                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
-                               qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
-                               qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                               {
+                                       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
                        }
                }
        }
 }
 
-static int R_CalcTexelDataSize (gltexture_t *glt)
+static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, int inheight, int indepth, int *outwidth, int *outheight, int *outdepth)
 {
-       int width2, height2, depth2, size, picmip;
-       if (glt->flags & TEXF_FRAGMENT)
-               size = glt->width * glt->height * glt->depth;
-       else
+       int picmip = 0, maxsize = 0, width2 = 1, height2 = 1, depth2 = 1;
+
+       if (gl_max_size.integer > gl_max_texture_size)
+               Cvar_SetValue("gl_max_size", gl_max_texture_size);
+
+       switch (texturetype)
+       {
+       default:
+       case GLTEXTURETYPE_1D:
+       case GLTEXTURETYPE_2D:
+               maxsize = gl_max_texture_size;
+               break;
+       case GLTEXTURETYPE_3D:
+               maxsize = gl_max_3d_texture_size;
+               break;
+       case GLTEXTURETYPE_CUBEMAP:
+               maxsize = gl_max_cube_map_texture_size;
+               break;
+       }
+
+       if (flags & TEXF_PICMIP)
+       {
+               maxsize = min(maxsize, gl_max_size.integer);
+               picmip = gl_picmip.integer;
+       }
+
+       if (outwidth)
        {
-               picmip = 0;
-               if (glt->flags & TEXF_PICMIP)
-                       picmip = gl_picmip.integer;
-               if (gl_max_size.integer > realmaxsize)
-                       Cvar_SetValue("gl_max_size", realmaxsize);
-               // calculate final size
-               for (width2 = 1;width2 < glt->width;width2 <<= 1);
-               for (height2 = 1;height2 < glt->height;height2 <<= 1);
-               for (depth2 = 1;depth2 < glt->depth;depth2 <<= 1);
-               for (width2 >>= picmip;width2 > gl_max_size.integer;width2 >>= 1);
-               for (height2 >>= picmip;height2 > gl_max_size.integer;height2 >>= 1);
-               for (depth2 >>= picmip;depth2 > gl_max_size.integer;depth2 >>= 1);
-               if (width2 < 1) width2 = 1;
-               if (height2 < 1) height2 = 1;
-               if (depth2 < 1) depth2 = 1;
-
-               size = 0;
-               if (glt->flags & TEXF_MIPMAP)
+               if (gl_support_arb_texture_non_power_of_two)
+                       width2 = min(inwidth >> picmip, maxsize);
+               else
                {
-                       while (width2 > 1 || height2 > 1 || depth2 > 1)
-                       {
-                               size += width2 * height2 * depth2;
-                               if (width2 > 1)
-                                       width2 >>= 1;
-                               if (height2 > 1)
-                                       height2 >>= 1;
-                               if (depth2 > 1)
-                                       depth2 >>= 1;
-                       }
-                       size++; // count the last 1x1 mipmap
+                       for (width2 = 1;width2 < inwidth;width2 <<= 1);
+                       for (width2 >>= picmip;width2 > maxsize;width2 >>= 1);
                }
+               *outwidth = max(1, width2);
+       }
+       if (outheight)
+       {
+               if (gl_support_arb_texture_non_power_of_two)
+                       height2 = min(inheight >> picmip, maxsize);
                else
-                       size = width2 * height2 * depth2;
+               {
+                       for (height2 = 1;height2 < inheight;height2 <<= 1);
+                       for (height2 >>= picmip;height2 > maxsize;height2 >>= 1);
+               }
+               *outheight = max(1, height2);
+       }
+       if (outdepth)
+       {
+               if (gl_support_arb_texture_non_power_of_two)
+                       depth2 = min(indepth >> picmip, maxsize);
+               else
+               {
+                       for (depth2 = 1;depth2 < indepth;depth2 <<= 1);
+                       for (depth2 >>= picmip;depth2 > maxsize;depth2 >>= 1);
+               }
+               *outdepth = max(1, depth2);
        }
-       size *= glt->textype->internalbytesperpixel * glt->image->sides;
-
-       return size;
 }
 
-void R_TextureStats_PrintTotal(void)
+
+static int R_CalcTexelDataSize (gltexture_t *glt)
 {
-       int glsize, total = 0, totalt = 0, totalp = 0, loaded = 0, loadedt = 0, loadedp = 0;
-       gltexture_t *glt;
-       gltexturepool_t *pool;
-       for (pool = gltexturepoolchain;pool;pool = pool->next)
+       int width2, height2, depth2, size;
+
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
+
+       size = width2 * height2 * depth2;
+
+       if (glt->flags & TEXF_MIPMAP)
        {
-               for (glt = pool->gltchain;glt;glt = glt->chain)
+               while (width2 > 1 || height2 > 1 || depth2 > 1)
                {
-                       glsize = R_CalcTexelDataSize(glt);
-                       total++;
-                       totalt += glsize;
-                       totalp += glt->inputdatasize;
-                       if (!(glt->flags & GLTEXF_UPLOAD))
-                       {
-                               loaded++;
-                               loadedt += glsize;
-                               loadedp += glt->inputdatasize;
-                       }
+                       if (width2 > 1)
+                               width2 >>= 1;
+                       if (height2 > 1)
+                               height2 >>= 1;
+                       if (depth2 > 1)
+                               depth2 >>= 1;
+                       size += width2 * height2 * depth2;
                }
        }
-       Con_Printf("total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", total, totalt / 1048576.0, totalp / 1048576.0, loaded, loadedt / 1048576.0, loadedp / 1048576.0, total - loaded, (totalt - loadedt) / 1048576.0, (totalp - loadedp) / 1048576.0);
+
+       return (int)(size * glt->textype->glinternalbytesperpixel) * glt->sides;
 }
 
-static void R_TextureStats_f(void)
+void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
 {
-       int loaded;
+       int glsize;
+       int isloaded;
+       int pooltotal = 0, pooltotalt = 0, pooltotalp = 0, poolloaded = 0, poolloadedt = 0, poolloadedp = 0;
+       int sumtotal = 0, sumtotalt = 0, sumtotalp = 0, sumloaded = 0, sumloadedt = 0, sumloadedp = 0;
        gltexture_t *glt;
        gltexturepool_t *pool;
-       Con_Print("glsize input loaded mip alpha name\n");
+       if (printeach)
+               Con_Print("glsize input loaded mip alpha name\n");
        for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
+               pooltotal = 0;
+               pooltotalt = 0;
+               pooltotalp = 0;
+               poolloaded = 0;
+               poolloadedt = 0;
+               poolloadedp = 0;
                for (glt = pool->gltchain;glt;glt = glt->chain)
                {
-                       loaded = !(glt->flags & GLTEXF_UPLOAD);
-                       Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", loaded ? '[' : ' ', (R_CalcTexelDataSize(glt) + 1023) / 1024, loaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', loaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier ? glt->identifier : "<unnamed>");
+                       glsize = R_CalcTexelDataSize(glt);
+                       isloaded = !(glt->flags & GLTEXF_UPLOAD);
+                       pooltotal++;
+                       pooltotalt += glsize;
+                       pooltotalp += glt->inputdatasize;
+                       if (isloaded)
+                       {
+                               poolloaded++;
+                               poolloadedt += glsize;
+                               poolloadedp += glt->inputdatasize;
+                       }
+                       if (printeach)
+                               Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", isloaded ? '[' : ' ', (glsize + 1023) / 1024, isloaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', isloaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier);
                }
-               Con_Printf("pool %10p\n", pool);
+               if (printpool)
+                       Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", (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;
        }
-       R_TextureStats_PrintTotal();
+       if (printtotal)
+               Con_Printf("textures total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", sumtotal, sumtotalt / 1048576.0, sumtotalp / 1048576.0, sumloaded, sumloadedt / 1048576.0, sumloadedp / 1048576.0, sumtotal - sumloaded, (sumtotalt - sumloadedt) / 1048576.0, (sumtotalp - sumloadedp) / 1048576.0);
 }
 
-char engineversion[40];
+static void R_TextureStats_f(void)
+{
+       R_TextureStats_Print(true, true, true);
+}
 
 static void r_textures_start(void)
 {
-       // deal with size limits of various drivers (3dfx in particular)
-       qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &realmaxsize);
-       CHECKGLERROR
        // LordHavoc: allow any alignment
-       qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        CHECKGLERROR
+       qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);CHECKGLERROR
+       qglPixelStorei(GL_PACK_ALIGNMENT, 1);CHECKGLERROR
 
-       // use the largest scrap texture size we can (not sure if this is really a good idea)
-       for (block_size = 1;block_size < realmaxsize && block_size < gl_max_scrapsize.integer;block_size <<= 1);
-
-       texturemempool = Mem_AllocPool("Texture Info", 0, NULL);
-       texturedatamempool = Mem_AllocPool("Texture Storage (not yet uploaded)", 0, NULL);
-       textureprocessingmempool = Mem_AllocPool("Texture Processing Buffers", 0, NULL);
+       texturemempool = Mem_AllocPool("texture management", 0, NULL);
 
        // Disable JPEG screenshots if the DLL isn't loaded
        if (! JPEG_OpenLibrary ())
                Cvar_SetValueQuick (&scr_screenshot_jpeg, 0);
+       // TODO: support png screenshots?
+       PNG_OpenLibrary ();
 }
 
 static void r_textures_shutdown(void)
@@ -509,8 +622,6 @@ static void r_textures_shutdown(void)
        colorconvertbuffer = NULL;
        texturebuffer = NULL;
        Mem_FreePool(&texturemempool);
-       Mem_FreePool(&texturedatamempool);
-       Mem_FreePool(&textureprocessingmempool);
 }
 
 static void r_textures_newmap(void)
@@ -519,14 +630,23 @@ static void r_textures_newmap(void)
 
 void R_Textures_Init (void)
 {
-       Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f);
-       Cmd_AddCommand("r_texturestats", R_TextureStats_f);
-       Cvar_RegisterVariable (&gl_max_scrapsize);
+       Cmd_AddCommand("gl_texturemode", &GL_TextureMode_f, "set texture filtering mode (GL_NEAREST, GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, etc)");
+       Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
        Cvar_RegisterVariable (&gl_max_size);
        Cvar_RegisterVariable (&gl_picmip);
        Cvar_RegisterVariable (&r_lerpimages);
        Cvar_RegisterVariable (&r_precachetextures);
        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);
 
        R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 }
@@ -553,27 +673,28 @@ void R_Textures_Frame (void)
 
        if (old_aniso != gl_texture_anisotropy.integer)
        {
-               gltextureimage_t *image;
+               gltexture_t *glt;
                gltexturepool_t *pool;
                GLint oldbindtexnum;
 
                old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
-               
+
                Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 
+               CHECKGLERROR
                for (pool = gltexturepoolchain;pool;pool = pool->next)
                {
-                       for (image = pool->imagechain;image;image = image->imagechain)
+                       for (glt = pool->gltchain;glt;glt = glt->chain)
                        {
                                // only update already uploaded images
-                               if (!(image->flags & GLTEXF_UPLOAD))
+                               if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
                                {
-                                       qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
+                                       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
 
-                                       qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
-                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
+                                       qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+                                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 
-                                       qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                                       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
                                }
                        }
                }
@@ -589,21 +710,21 @@ void R_MakeResizeBufferBigger(int size)
                        Mem_Free(resizebuffer);
                if (colorconvertbuffer)
                        Mem_Free(colorconvertbuffer);
-               resizebuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
-               colorconvertbuffer = Mem_Alloc(textureprocessingmempool, resizebuffersize);
+               resizebuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
+               colorconvertbuffer = (unsigned char *)Mem_Alloc(texturemempool, resizebuffersize);
                if (!resizebuffer || !colorconvertbuffer)
-                       Host_Error("R_Upload: out of memory\n");
+                       Host_Error("R_Upload: out of memory");
        }
 }
 
-static void GL_SetupTextureParameters(int flags, int texturetype)
+static void GL_SetupTextureParameters(int flags, textype_t textype, int texturetype)
 {
        int textureenum = gltexturetypeenums[texturetype];
        int wrapmode = ((flags & TEXF_CLAMP) && gl_support_clamptoedge) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 
        CHECKGLERROR
 
-       if (gl_support_anisotropy)
+       if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
        {
                int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
                if (gl_texture_anisotropy.integer != aniso)
@@ -662,355 +783,204 @@ static void GL_SetupTextureParameters(int flags, int texturetype)
                qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
        }
 
+       if (textype == TEXTYPE_SHADOWMAP)
+       {
+               if (flags & TEXF_COMPARE)
+               {
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
+               }
+               else
+               {
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_ALWAYS);CHECKGLERROR
+               }
+               qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_INTENSITY);CHECKGLERROR
+       }
+
        CHECKGLERROR
 }
 
-static void R_Upload(gltexture_t *glt, qbyte *data)
+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;
-       qbyte *prevbuffer;
+       const unsigned char *prevbuffer;
        prevbuffer = data;
 
        CHECKGLERROR
 
-       glt->texnum = glt->image->texnum;
        // we need to restore the texture binding after finishing the upload
-       qglGetIntegerv(gltexturetypebindingenums[glt->image->texturetype], &oldbindtexnum);
-       qglBindTexture(gltexturetypeenums[glt->image->texturetype], glt->image->texnum);
-       CHECKGLERROR
-       glt->flags &= ~GLTEXF_UPLOAD;
+       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+       qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 
-       if (glt->flags & TEXF_FRAGMENT)
+       // these are rounded up versions of the size to do better resampling
+       if (gl_support_arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
        {
-               if (glt->image->flags & GLTEXF_UPLOAD)
-               {
-                       glt->image->flags &= ~GLTEXF_UPLOAD;
-                       Con_DPrint("uploaded new fragments image\n");
-                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
-                       memset(resizebuffer, 255, glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
-                       switch(glt->image->texturetype)
-                       {
-                       case GLTEXTURETYPE_1D:
-                               qglTexImage1D(GL_TEXTURE_1D, 0, glt->image->glinternalformat, glt->image->width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
-                               CHECKGLERROR
-                               break;
-                       case GLTEXTURETYPE_2D:
-                               qglTexImage2D(GL_TEXTURE_2D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
-                               CHECKGLERROR
-                               break;
-                       case GLTEXTURETYPE_3D:
-                               qglTexImage3D(GL_TEXTURE_3D, 0, glt->image->glinternalformat, glt->image->width, glt->image->height, glt->image->depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, resizebuffer);
-                               CHECKGLERROR
-                               break;
-                       default:
-                               Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
-                               break;
-                       }
-                       GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
-               }
+               width = glt->inputwidth;
+               height = glt->inputheight;
+               depth = glt->inputdepth;
+       }
+       else
+       {
+               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 (prevbuffer == NULL)
-               {
-                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->bytesperpixel);
-                       memset(resizebuffer, 0, glt->width * glt->height * glt->image->depth * glt->image->bytesperpixel);
-                       prevbuffer = resizebuffer;
-               }
-               else if (glt->textype->textype == TEXTYPE_PALETTE)
-               {
-                       // promote paletted to RGBA, so we only have to worry about RGB and
-                       // RGBA in the rest of this code
-                       R_MakeResizeBufferBigger(glt->image->width * glt->image->height * glt->image->depth * glt->image->sides * glt->image->bytesperpixel);
-                       Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth, glt->palette);
-                       prevbuffer = colorconvertbuffer;
-               }
+       R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
+       R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
+
+       if (prevbuffer == NULL)
+       {
+               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;
+       }
 
-               switch(glt->image->texturetype)
+       if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
+       {
+               // update a portion of the image
+               switch(glt->texturetype)
                {
                case GLTEXTURETYPE_1D:
-                       qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x, glt->width, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                       CHECKGLERROR
+                       qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                        break;
                case GLTEXTURETYPE_2D:
-                       qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x, glt->y, glt->width, glt->height, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                       CHECKGLERROR
+                       qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                        break;
                case GLTEXTURETYPE_3D:
-                       qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x, glt->y, glt->z, glt->width, glt->height, glt->depth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                       CHECKGLERROR
+                       qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                        break;
                default:
-                       Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D\n");
+                       Host_Error("R_Upload: partial update of type other than 1D, 2D, or 3D");
                        break;
                }
        }
        else
        {
-               glt->image->flags &= ~GLTEXF_UPLOAD;
-
-               // these are rounded up versions of the size to do better resampling
-               for (width  = 1;width  < glt->width ;width  <<= 1);
-               for (height = 1;height < glt->height;height <<= 1);
-               for (depth  = 1;depth  < glt->depth ;depth  <<= 1);
-
-               R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
+               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");
 
-               if (prevbuffer == NULL)
-               {
-                       width = glt->image->width;
-                       height = glt->image->height;
-                       depth = glt->image->depth;
-                       memset(resizebuffer, 0, width * height * depth * glt->image->bytesperpixel);
-                       prevbuffer = resizebuffer;
-               }
-               else
-               {
-                       if (glt->textype->textype == TEXTYPE_PALETTE)
-                       {
-                               // promote paletted to RGBA, so we only have to worry about RGB and
-                               // RGBA in the rest of this code
-                               Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, glt->width * glt->height * glt->depth * glt->image->sides, glt->palette);
-                               prevbuffer = colorconvertbuffer;
-                       }
-               }
+               // upload the image for the first time
+               glt->flags &= ~GLTEXF_UPLOAD;
 
                // cubemaps contain multiple images and thus get processed a bit differently
-               if (glt->image->texturetype != GLTEXTURETYPE_CUBEMAP)
+               if (glt->texturetype != GLTEXTURETYPE_CUBEMAP)
                {
-                       if (glt->width != width || glt->height != height || glt->depth != depth)
+                       if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
                        {
-                               Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
+                               Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
                                prevbuffer = resizebuffer;
                        }
                        // picmip/max_size
-                       while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
+                       while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
                        {
-                               Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
+                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
                                prevbuffer = resizebuffer;
                        }
                }
                mip = 0;
-               switch(glt->image->texturetype)
+               if (gl_support_texture_compression)
                {
-               case GLTEXTURETYPE_1D:
-                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       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_1D:
+                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                        if (glt->flags & TEXF_MIPMAP)
                        {
                                while (width > 1 || height > 1 || depth > 1)
                                {
-                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                                       CHECKGLERROR
+                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                                }
                        }
                        break;
                case GLTEXTURETYPE_2D:
-                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                       CHECKGLERROR
+                       qglTexImage2D(GL_TEXTURE_2D, 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_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                                       CHECKGLERROR
+                                       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->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                       CHECKGLERROR
+                       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_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                                       CHECKGLERROR
+                                       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 = prevbuffer;
+                       texturebuffer = (unsigned char *)prevbuffer;
                        for (i = 0;i < 6;i++)
                        {
                                prevbuffer = texturebuffer;
-                               texturebuffer += glt->width * glt->height * glt->depth * glt->textype->inputbytesperpixel;
-                               if (glt->width != width || glt->height != height || glt->depth != depth)
+                               texturebuffer += glt->inputwidth * glt->inputheight * glt->inputdepth * glt->textype->inputbytesperpixel;
+                               if (glt->inputwidth != width || glt->inputheight != height || glt->inputdepth != depth)
                                {
-                                       Image_Resample(prevbuffer, glt->width, glt->height, glt->depth, resizebuffer, width, height, depth, glt->image->bytesperpixel, r_lerpimages.integer);
+                                       Image_Resample32(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, r_lerpimages.integer);
                                        prevbuffer = resizebuffer;
                                }
                                // picmip/max_size
-                               while (width > glt->image->width || height > glt->image->height || depth > glt->image->depth)
+                               while (width > glt->tilewidth || height > glt->tileheight || depth > glt->tiledepth)
                                {
-                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->image->width, glt->image->height, glt->image->depth, glt->image->bytesperpixel);
+                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth);
                                        prevbuffer = resizebuffer;
                                }
                                mip = 0;
-                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                               CHECKGLERROR
+                               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_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                               Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                                prevbuffer = resizebuffer;
-                                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
-                                               CHECKGLERROR
+                                               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->image->flags, glt->image->texturetype);
-       }
-       qglBindTexture(gltexturetypeenums[glt->image->texturetype], oldbindtexnum);
-}
-
-static void R_FindImageForTexture(gltexture_t *glt)
-{
-       int i, j, best, best2, x, y, z, w, h, d, picmip;
-       textypeinfo_t *texinfo;
-       gltexturepool_t *pool;
-       gltextureimage_t *image, **imagechainpointer;
-       texinfo = glt->textype;
-       pool = glt->pool;
-
-       // remains -1 until uploaded
-       glt->texnum = -1;
-
-       x = 0;
-       y = 0;
-       z = 0;
-       w = glt->width;
-       h = glt->height;
-       d = glt->depth;
-       if (glt->flags & TEXF_FRAGMENT)
-       {
-               for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain)
-               {
-                       image = *imagechainpointer;
-                       if (image->type != GLIMAGETYPE_FRAGMENTS)
-                               continue;
-                       if (image->texturetype != glt->texturetype)
-                               continue;
-                       if ((image->flags ^ glt->flags) & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP))
-                               continue;
-                       if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
-                               continue;
-                       if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
-                               continue;
-
-                       // got a fragments texture, find a place in it if we can
-                       for (best = image->width, i = 0;i < image->width - w;i++)
-                       {
-                               for (best2 = 0, j = 0;j < w;j++)
-                               {
-                                       if (image->blockallocation[i+j] >= best)
-                                               break;
-                                       if (best2 < image->blockallocation[i+j])
-                                               best2 = image->blockallocation[i+j];
-                               }
-                               if (j == w)
-                               {
-                                       // this is a valid spot
-                                       x = i;
-                                       y = best = best2;
-                               }
-                       }
-
-                       if (best + h > image->height)
-                               continue;
-
-                       for (i = 0;i < w;i++)
-                               image->blockallocation[x + i] = best + h;
-
-                       glt->x = x;
-                       glt->y = y;
-                       glt->z = 0;
-                       glt->image = image;
-                       image->texturecount++;
-                       return;
-               }
-
-               image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-               if (image == NULL)
-                       Sys_Error("R_FindImageForTexture: ran out of memory\n");
-               image->type = GLIMAGETYPE_FRAGMENTS;
-               // make sure the created image is big enough for the fragment
-               for (image->width = block_size;image->width < glt->width;image->width <<= 1);
-               image->height = 1;
-               if (gltexturetypedimensions[glt->texturetype] >= 2)
-                       for (image->height = block_size;image->height < glt->height;image->height <<= 1);
-               image->depth = 1;
-               if (gltexturetypedimensions[glt->texturetype] >= 3)
-                       for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
-               image->blockallocation = Mem_Alloc(texturemempool, image->width * sizeof(short));
-               memset(image->blockallocation, 0, image->width * sizeof(short));
-
-               x = 0;
-               y = 0;
-               z = 0;
-               for (i = 0;i < w;i++)
-                       image->blockallocation[x + i] = y + h;
-       }
-       else
-       {
-               for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
-
-               image = Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-               if (image == NULL)
-                       Sys_Error("R_FindImageForTexture: ran out of memory\n");
-               image->type = GLIMAGETYPE_TILE;
-               image->blockallocation = NULL;
-
-               picmip = 0;
-               if (glt->flags & TEXF_PICMIP)
-                       picmip = gl_picmip.integer;
-               // calculate final size
-               if (gl_max_size.integer > realmaxsize)
-                       Cvar_SetValue("gl_max_size", realmaxsize);
-               for (image->width = 1;image->width < glt->width;image->width <<= 1);
-               for (image->height = 1;image->height < glt->height;image->height <<= 1);
-               for (image->depth = 1;image->depth < glt->depth;image->depth <<= 1);
-               for (image->width >>= picmip;image->width > gl_max_size.integer;image->width >>= 1);
-               for (image->height >>= picmip;image->height > gl_max_size.integer;image->height >>= 1);
-               for (image->depth >>= picmip;image->depth > gl_max_size.integer;image->depth >>= 1);
-               if (image->width < 1) image->width = 1;
-               if (image->height < 1) image->height = 1;
-               if (image->depth < 1) image->depth = 1;
+               GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
        }
-       image->texturetype = glt->texturetype;
-       image->glinternalformat = texinfo->glinternalformat;
-       image->glformat = texinfo->glformat;
-       image->flags = (glt->flags & (TEXF_MIPMAP | TEXF_ALPHA | TEXF_CLAMP | TEXF_PICMIP)) | GLTEXF_UPLOAD;
-       image->bytesperpixel = texinfo->internalbytesperpixel;
-       image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
-       // get a texture number to use
-       qglGenTextures(1, &image->texnum);
-       *imagechainpointer = image;
-       image->texturecount++;
-
-       glt->x = x;
-       glt->y = y;
-       glt->y = z;
-       glt->image = image;
+       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 }
 
-// note: R_FindImageForTexture must be called before this
 static void R_UploadTexture (gltexture_t *glt)
 {
        if (!(glt->flags & GLTEXF_UPLOAD))
                return;
 
-       R_Upload(glt, glt->inputtexels);
+       CHECKGLERROR
+       qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+       R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
        if (glt->inputtexels)
        {
                Mem_Free(glt->inputtexels);
@@ -1021,7 +991,7 @@ static void R_UploadTexture (gltexture_t *glt)
                Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
 }
 
-static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, int textype, int texturetype, const qbyte *data, const unsigned int *palette)
+static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, int sides, int flags, textype_t textype, int texturetype, const unsigned char *data, const unsigned int *palette)
 {
        int i, size;
        gltexture_t *glt;
@@ -1031,26 +1001,29 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        if (cls.state == ca_dedicated)
                return NULL;
 
-       if (flags & TEXF_FRAGMENT && texturetype != GLTEXTURETYPE_2D)
-               Sys_Error("R_LoadTexture: only 2D fragment textures implemented\n");
+       if (texturetype == GLTEXTURETYPE_RECTANGLE && !gl_texturerectangle)
+       {
+               Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
+               return NULL;
+       }
        if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
-               Sys_Error("R_LoadTexture: cubemap texture not supported by driver\n");
+       {
+               Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
+               return NULL;
+       }
        if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
-               Sys_Error("R_LoadTexture: 3d texture not supported by driver\n");
-
-       /*
-       glt = R_FindTexture (pool, identifier);
-       if (glt)
        {
-               Con_Printf("R_LoadTexture: replacing existing texture %s\n", identifier);
-               R_FreeTexture((rtexture_t *)glt);
+               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)
-               Sys_Error("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides);
+       {
+               Con_Printf ("R_LoadTexture: bogus texture size (%dx%dx%dx%dbppx%dsides = %d bytes)\n", width, height, depth, texinfo->inputbytesperpixel * 8, sides, size);
+               return NULL;
+       }
 
        // clear the alpha flag if the texture has no transparent pixels
        switch(textype)
@@ -1063,7 +1036,7 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
                        {
                                for (i = 0;i < size;i++)
                                {
-                                       if (((qbyte *)&palette[data[i]])[3] < 255)
+                                       if (((unsigned char *)&palette[data[i]])[3] < 255)
                                        {
                                                flags |= TEXF_ALPHA;
                                                break;
@@ -1072,11 +1045,8 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
                        }
                }
                break;
-       case TEXTYPE_RGB:
-               if (flags & TEXF_ALPHA)
-                       Host_Error("R_LoadTexture: RGB has no alpha, don't specify TEXF_ALPHA\n");
-               break;
        case TEXTYPE_RGBA:
+       case TEXTYPE_BGRA:
                if (flags & TEXF_ALPHA)
                {
                        flags &= ~TEXF_ALPHA;
@@ -1093,189 +1063,149 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
                        }
                }
                break;
-       case TEXTYPE_DSDT:
+       case TEXTYPE_SHADOWMAP:
+       case TEXTYPE_PROJECTION:
                break;
        default:
-               Host_Error("R_LoadTexture: unknown texture type\n");
+               Host_Error("R_LoadTexture: unknown texture type");
        }
 
-       glt = Mem_Alloc(texturemempool, sizeof(gltexture_t));
+       glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
        if (identifier)
-       {
-               glt->identifier = Mem_Alloc(texturemempool, strlen(identifier)+1);
-               strcpy (glt->identifier, identifier);
-       }
-       else
-               glt->identifier = NULL;
+               strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
        glt->pool = pool;
        glt->chain = pool->gltchain;
        pool->gltchain = glt;
-       glt->width = width;
-       glt->height = height;
-       glt->depth = depth;
+       glt->inputwidth = width;
+       glt->inputheight = height;
+       glt->inputdepth = depth;
        glt->flags = flags | GLTEXF_UPLOAD;
        glt->textype = texinfo;
        glt->texturetype = texturetype;
        glt->inputdatasize = size;
        glt->palette = palette;
+       glt->glinternalformat = texinfo->glinternalformat;
+       glt->glformat = texinfo->glformat;
+       glt->gltype = texinfo->gltype;
+       glt->bytesperpixel = texinfo->internalbytesperpixel;
+       glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
+       glt->texnum = 0;
+       // init the dynamic texture attributes, too [11/22/2007 Black]
+       glt->dirtytexnum = 0;
+       glt->updatecallback = NULL;
+       glt->updatacallback_data = NULL;
 
        if (data)
        {
-               glt->inputtexels = Mem_Alloc(texturedatamempool, size);
-               if (glt->inputtexels == NULL)
-                       Sys_Error("R_LoadTexture: out of memory\n");
+               glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
                memcpy(glt->inputtexels, data, size);
        }
        else
                glt->inputtexels = NULL;
 
-       R_FindImageForTexture(glt);
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
        R_PrecacheTexture(glt);
 
+       // texture converting and uploading can take a while, so make sure we're sending keepalives
+       CL_KeepaliveMessage(false);
+
        return (rtexture_t *)glt;
 }
 
-rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
+rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
 {
        return R_SetupTexture(rtexturepool, identifier, width, 1, 1, 1, flags, textype, GLTEXTURETYPE_1D, data, palette);
 }
 
-rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette)
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
 {
        return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, flags, textype, GLTEXTURETYPE_2D, data, palette);
 }
 
-rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette)
+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, const unsigned int *palette)
 {
        return R_SetupTexture(rtexturepool, identifier, width, height, depth, 1, flags, textype, GLTEXTURETYPE_3D, data, palette);
 }
 
-rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette)
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette)
 {
        return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
 }
 
-int R_TextureHasAlpha(rtexture_t *rt)
-{
-       return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
-}
-
-int R_TextureWidth(rtexture_t *rt)
+rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter)
 {
-       return rt ? ((gltexture_t *)rt)->width : 0;
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, TEXF_ALWAYSPRECACHE | TEXF_CLAMP | (filter ? TEXF_FORCELINEAR | TEXF_COMPARE : TEXF_FORCENEAREST), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
 }
 
-int R_TextureHeight(rtexture_t *rt)
+rtexture_t *R_LoadTextureCubeProjection(rtexturepool_t *rtexturepool, const char *identifier, int size, int border)
 {
-       return rt ? ((gltexture_t *)rt)->height : 0;
-}
-
-void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
-{
-       gltexture_t *glt;
-       float iwidth, iheight, idepth;
-       if (cls.state == ca_dedicated)
-       {
-               if (x)
-                       *x = 0;
-               if (y)
-                       *y = 0;
-               if (z)
-                       *z = 0;
-               if (fx1 || fy1 || fx2 || fy2)
-               {
-                       if (fx1)
-                               *fx1 = 0;
-                       if (fy1)
-                               *fy1 = 0;
-                       if (fz1)
-                               *fz1 = 0;
-                       if (fx2)
-                               *fx2 = 1;
-                       if (fy2)
-                               *fy2 = 1;
-                       if (fz2)
-                               *fz2 = 1;
-               }
-               return;
-       }
-       if (!rt)
-               Host_Error("R_FragmentLocation: no texture supplied\n");
-       glt = (gltexture_t *)rt;
-       if (glt->flags & TEXF_FRAGMENT)
-       {
-               if (x)
-                       *x = glt->x;
-               if (y)
-                       *y = glt->y;
-               if (fx1 || fy1 || fx2 || fy2)
-               {
-                       iwidth = 1.0f / glt->image->width;
-                       iheight = 1.0f / glt->image->height;
-                       idepth = 1.0f / glt->image->depth;
-                       if (fx1)
-                               *fx1 = glt->x * iwidth;
-                       if (fy1)
-                               *fy1 = glt->y * iheight;
-                       if (fz1)
-                               *fz1 = glt->z * idepth;
-                       if (fx2)
-                               *fx2 = (glt->x + glt->width) * iwidth;
-                       if (fy2)
-                               *fy2 = (glt->y + glt->height) * iheight;
-                       if (fz2)
-                               *fz2 = (glt->z + glt->depth) * idepth;
-               }
-       }
-       else
+    // maps to a 2x3 texture rectangle with normalized coordinates (must be scaled by size after lookup)
+    // +-
+    // XX
+    // YY
+    // ZZ
+    rtexture_t *projection;
+       unsigned short *data, *texel;
+       unsigned int sizebits = 0, stepbits = 0, res, i, j, k;
+       while ((1 << sizebits) < size) sizebits++;
+       while ((1 << stepbits) <= border) stepbits++;
+    stepbits = min(stepbits, sizebits);
+       res = size>>stepbits;
+       stepbits += 16 - sizebits - 1;
+       data = (unsigned short *)Mem_Alloc(texturemempool, 2*sizeof(unsigned short)*res*res*6);
+       texel = data;
+       for (i = 0;i < 6;i++) 
        {
-               if (x)
-                       *x = 0;
-               if (y)
-                       *y = 0;
-               if (z)
-                       *z = 0;
-               if (fx1 || fy1 || fx2 || fy2)
+               unsigned int x = (i&1)<<16, y = (i>>1)<<16;
+               for (j = 0;j < res;j++)
                {
-                       if (fx1)
-                               *fx1 = 0;
-                       if (fy1)
-                               *fy1 = 0;
-                       if (fz1)
-                               *fz1 = 0;
-                       if (fx2)
-                               *fx2 = 1;
-                       if (fy2)
-                               *fy2 = 1;
-                       if (fz2)
-                               *fz2 = 1;
+                       for (k = 0;k < res;k++)
+                       {
+                               *texel++ = (x + ((2*k + 1)<<stepbits))/2;
+                               *texel++ = (y + ((2*j + 1)<<stepbits))/3;
+                       }
                }
        }
+       projection = R_SetupTexture(rtexturepool, identifier, res, res, 1, 6, TEXF_ALWAYSPRECACHE | TEXF_FORCELINEAR | TEXF_CLAMP, TEXTYPE_PROJECTION, GLTEXTURETYPE_CUBEMAP, (unsigned char *)data, NULL);
+       Mem_Free(data);
+    return projection;
+}
+
+int R_TextureHasAlpha(rtexture_t *rt)
+{
+       return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
 }
 
-void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
+int R_TextureWidth(rtexture_t *rt)
 {
-       R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
+       return rt ? ((gltexture_t *)rt)->inputwidth : 0;
 }
 
-int R_CompatibleFragmentWidth(int width, int textype, int flags)
+int R_TextureHeight(rtexture_t *rt)
 {
-       return width;
+       return rt ? ((gltexture_t *)rt)->inputheight : 0;
 }
 
-void R_UpdateTexture(rtexture_t *rt, qbyte *data)
+void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height)
 {
        gltexture_t *glt;
        if (rt == NULL)
-               Host_Error("R_UpdateTexture: no texture supplied\n");
+               Host_Error("R_UpdateTexture: no texture supplied");
        if (data == NULL)
-               Host_Error("R_UpdateTexture: no data supplied\n");
+               Host_Error("R_UpdateTexture: no data supplied");
        glt = (gltexture_t *)rt;
 
-       // if it has not been uploaded yet, update the data that will be used when it is
-       if (glt->inputtexels)
-               memcpy(glt->inputtexels, data, glt->inputdatasize);
-       else
-               R_Upload(glt, data);
+       // we need it to be uploaded before we can update a part of it
+       if (glt->flags & GLTEXF_UPLOAD)
+               R_UploadTexture(glt);
+
+       // update part of the texture
+       R_Upload(glt, data, x, y, 0, width, height, 1);
 }
 
+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 );
+}