]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_textures.c
removed TEXF_FRAGMENT support from texture manager and merged gltextureimage_t into...
[xonotic/darkplaces.git] / gl_textures.c
index c23980f1ba383ec05694ec61308ee529b5aadd97..b39b3e3c5c6a25ca66d6a9dd02b85a702d8136d6 100644 (file)
@@ -5,7 +5,6 @@
 #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_max_scrapsize = {CVAR_SAVE, "gl_max_scrapsize", "256", "size of scrap textures used to combine lightmaps"};
 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)"};
@@ -25,9 +24,6 @@ static mempool_t *texturemempool;
 // 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;
-
 typedef struct textypeinfo_s
 {
        int textype;
@@ -45,11 +41,6 @@ static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, GL_RGBA   ,
 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
@@ -68,24 +59,6 @@ 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
@@ -96,12 +69,10 @@ typedef struct gltexture_s
        struct gltexturepool_s *pool;
        // pointer to next texture in texturepool chain
        struct gltexture_s *chain;
-       // pointer into gltextureimage array
-       gltextureimage_t *image;
        // name of the texture (this might be removed someday), no duplicates
        char identifier[32];
-       // location in the image, and size
-       int x, y, z, width, height, depth;
+       // 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;
@@ -116,6 +87,16 @@ typedef struct gltexture_s
        int texturetype;
        // palette if the texture is TEXTYPE_PALETTE
        const unsigned int *palette;
+       // power of 2 size, after gl_picmip and gl_max_size are applied
+       int tilewidth, tileheight, tiledepth;
+       // 1 or 6 depending on texturetype
+       int sides;
+       // bytes per pixel
+       int bytesperpixel;
+       // GL_RGB or GL_RGBA
+       int glformat;
+       // 3 or 4
+       int glinternalformat;
 }
 gltexture_t;
 
@@ -124,7 +105,6 @@ gltexture_t;
 typedef struct gltexturepool_s
 {
        unsigned int sentinel;
-       struct gltextureimage_s *imagechain;
        struct gltexture_s *gltchain;
        struct gltexturepool_s *next;
 }
@@ -139,11 +119,6 @@ static int texturebuffersize = 0;
 
 static textypeinfo_t *R_GetTexTypeInfo(int textype, int flags)
 {
-       if ((flags & (TEXF_PICMIP | TEXF_FRAGMENT)) == (TEXF_PICMIP | TEXF_FRAGMENT))
-       {
-               Host_Error("R_GetTexTypeInfo: TEXF_PICMIP can not be used with TEXF_FRAGMENT");
-               return NULL;
-       }
        if (flags & TEXF_ALPHA)
        {
                switch(textype)
@@ -205,8 +180,7 @@ int R_RealGetTexture(rtexture_t *rt)
                glt = (gltexture_t *)rt;
                if (glt->flags & GLTEXF_UPLOAD)
                        R_UploadTexture(glt);
-               glt->texnum = glt->image->texnum;
-               return glt->image->texnum;
+               return glt->texnum;
        }
        else
                return 0;
@@ -215,7 +189,6 @@ int R_RealGetTexture(rtexture_t *rt)
 void R_FreeTexture(rtexture_t *rt)
 {
        gltexture_t *glt, **gltpointer;
-       gltextureimage_t *image, **gltimagepointer;
 
        glt = (gltexture_t *)rt;
        if (glt == NULL)
@@ -227,27 +200,8 @@ void R_FreeTexture(rtexture_t *rt)
        else
                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)
-       {
-               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");
-                       if (image->texnum)
-                               qglDeleteTextures(1, (GLuint *)&image->texnum);
-                       if (image->blockallocation)
-                               Mem_Free(image->blockallocation);
-                       Mem_Free(image);
-               }
-       }
+       if (glt->texnum)
+               qglDeleteTextures(1, (GLuint *)&glt->texnum);
 
        if (glt->inputtexels)
                Mem_Free(glt->inputtexels);
@@ -286,8 +240,6 @@ void R_FreeTexturePool(rtexturepool_t **rtexturepool)
                Host_Error("R_FreeTexturePool: pool not linked");
        while (pool->gltchain)
                R_FreeTexture((rtexture_t *)pool->gltchain);
-       if (pool->imagechain)
-               Con_Printf("R_FreeTexturePool: not all images freed\n");
        Mem_Free(pool);
 }
 
@@ -299,7 +251,7 @@ typedef struct glmode_s
 }
 glmode_t;
 
-static glmode_t modes[] =
+static glmode_t modes[6] =
 {
        {"GL_NEAREST", GL_NEAREST, GL_NEAREST},
        {"GL_LINEAR", GL_LINEAR, GL_LINEAR},
@@ -313,7 +265,7 @@ static void GL_TextureMode_f (void)
 {
        int i;
        GLint oldbindtexnum;
-       gltextureimage_t *image;
+       gltexture_t *glt;
        gltexturepool_t *pool;
 
        if (Cmd_Argc() == 1)
@@ -346,19 +298,19 @@ static void GL_TextureMode_f (void)
        // FIXME: force renderer(/client/something?) restart instead?
        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);
+                               qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
+                               if (glt->flags & TEXF_MIPMAP)
+                                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_min);
                                else
-                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
-                               qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
-                               qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MIN_FILTER, gl_filter_mag);
+                               qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAG_FILTER, gl_filter_mag);
+                               qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
                        }
                }
        }
@@ -417,10 +369,7 @@ static int R_CalcTexelDataSize (gltexture_t *glt)
 {
        int width2, height2, depth2, size;
 
-       if (glt->flags & TEXF_FRAGMENT)
-               return glt->width * glt->height * glt->depth * glt->textype->internalbytesperpixel * glt->image->sides;
-
-       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->width, glt->height, glt->depth, &width2, &height2, &depth2);
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &width2, &height2, &depth2);
 
        size = width2 * height2 * depth2;
 
@@ -438,7 +387,7 @@ static int R_CalcTexelDataSize (gltexture_t *glt)
                }
        }
 
-       return size * glt->textype->internalbytesperpixel * glt->image->sides;
+       return size * glt->textype->internalbytesperpixel * glt->sides;
 }
 
 void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean printtotal)
@@ -499,9 +448,6 @@ static void r_textures_start(void)
        qglPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        CHECKGLERROR
 
-       // use the largest scrap texture size we can (not sure if this is really a good idea)
-       for (block_size = 1;block_size * 2 <= gl_max_texture_size && block_size * 2 <= gl_max_scrapsize.integer;block_size *= 2);
-
        texturemempool = Mem_AllocPool("texture management", 0, NULL);
 
        // Disable JPEG screenshots if the DLL isn't loaded
@@ -539,7 +485,6 @@ 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)");
        Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
-       Cvar_RegisterVariable (&gl_max_scrapsize);
        Cvar_RegisterVariable (&gl_max_size);
        Cvar_RegisterVariable (&gl_picmip);
        Cvar_RegisterVariable (&r_lerpimages);
@@ -571,7 +516,7 @@ void R_Textures_Frame (void)
 
        if (old_aniso != gl_texture_anisotropy.integer)
        {
-               gltextureimage_t *image;
+               gltexture_t *glt;
                gltexturepool_t *pool;
                GLint oldbindtexnum;
 
@@ -581,17 +526,17 @@ void R_Textures_Frame (void)
 
                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_MIPMAP))
+                               if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
                                {
-                                       qglGetIntegerv(gltexturetypebindingenums[image->texturetype], &oldbindtexnum);
+                                       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
 
-                                       qglBindTexture(gltexturetypeenums[image->texturetype], image->texnum);
-                                       qglTexParameteri(gltexturetypeenums[image->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
+                                       qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
+                                       qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
 
-                                       qglBindTexture(gltexturetypeenums[image->texturetype], oldbindtexnum);
+                                       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
                                }
                        }
                }
@@ -692,162 +637,119 @@ static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy
 
        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);
+       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);
+       qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);
        CHECKGLERROR
-       glt->flags &= ~GLTEXF_UPLOAD;
 
-       if ((glt->flags & TEXF_FRAGMENT) || (glt->image->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0)
+       R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->sides * glt->bytesperpixel);
+
+       if (prevbuffer == NULL)
        {
-               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");
-                               break;
-                       }
-                       GL_SetupTextureParameters(glt->image->flags, glt->image->texturetype);
-               }
+               memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * glt->bytesperpixel);
+               prevbuffer = resizebuffer;
+       }
+       else if (glt->textype->textype == TEXTYPE_PALETTE)
+       {
+               // promote paletted to RGBA, so we only have to worry about RGB and
+               // RGBA in the rest of this code
+               Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth * glt->sides, glt->palette);
+               prevbuffer = colorconvertbuffer;
+       }
 
-               if (prevbuffer == NULL)
-               {
-                       R_MakeResizeBufferBigger(fragwidth * fragheight * fragdepth * glt->image->bytesperpixel);
-                       memset(resizebuffer, 0, fragwidth * fragheight * fragdepth * 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(fragwidth * fragheight * fragdepth * glt->image->sides * glt->image->bytesperpixel);
-                       Image_Copy8bitRGBA(prevbuffer, colorconvertbuffer, fragwidth * fragheight * fragdepth, glt->palette);
-                       prevbuffer = colorconvertbuffer;
-               }
+       // these are rounded up versions of the size to do better resampling
+       for (width  = 1;width  < glt->inputwidth ;width  <<= 1);
+       for (height = 1;height < glt->inputheight;height <<= 1);
+       for (depth  = 1;depth  < glt->inputdepth ;depth  <<= 1);
 
-               switch(glt->image->texturetype)
+       R_MakeResizeBufferBigger(width * height * depth * glt->sides * glt->bytesperpixel);
+
+       if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0)
+       {
+               // update a portion of the image
+               switch(glt->texturetype)
                {
                case GLTEXTURETYPE_1D:
-                       qglTexSubImage1D(GL_TEXTURE_1D, 0, glt->x + fragx, fragwidth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        break;
                case GLTEXTURETYPE_2D:
-                       qglTexSubImage2D(GL_TEXTURE_2D, 0, glt->x + fragx, glt->y + fragy, fragwidth, fragheight, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        break;
                case GLTEXTURETYPE_3D:
-                       qglTexSubImage3D(GL_TEXTURE_3D, 0, glt->x + fragx, glt->y + fragy, glt->z + fragz, fragwidth, fragheight, fragdepth, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        break;
                default:
-                       Host_Error("R_Upload: fragment texture of type other than 1D, 2D, or 3D");
+                       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);
+               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");
 
-               R_MakeResizeBufferBigger(width * height * depth * glt->image->sides * glt->image->bytesperpixel);
-
-               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_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
                                prevbuffer = resizebuffer;
                        }
                        // picmip/max_size
-                       while (width > glt->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_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
                                prevbuffer = resizebuffer;
                        }
                }
                mip = 0;
-               switch(glt->image->texturetype)
+               switch(glt->texturetype)
                {
                case GLTEXTURETYPE_1D:
-                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        if (glt->flags & TEXF_MIPMAP)
                        {
                                while (width > 1 || height > 1 || depth > 1)
                                {
-                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->image->glinternalformat, width, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                                        CHECKGLERROR
                                }
                        }
                        break;
                case GLTEXTURETYPE_2D:
-                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        if (glt->flags & TEXF_MIPMAP)
                        {
                                while (width > 1 || height > 1 || depth > 1)
                                {
-                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                                        CHECKGLERROR
                                }
                        }
                        break;
                case GLTEXTURETYPE_3D:
-                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                        CHECKGLERROR
                        if (glt->flags & TEXF_MIPMAP)
                        {
                                while (width > 1 || height > 1 || depth > 1)
                                {
-                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                       Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->image->glinternalformat, width, height, depth, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                                        CHECKGLERROR
                                }
                        }
@@ -859,168 +761,46 @@ static void R_Upload(gltexture_t *glt, unsigned char *data, int fragx, int fragy
                        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_Resample(prevbuffer, glt->inputwidth, glt->inputheight, glt->inputdepth, resizebuffer, width, height, depth, glt->bytesperpixel, r_lerpimages.integer);
                                        prevbuffer = resizebuffer;
                                }
                                // picmip/max_size
-                               while (width > glt->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_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, glt->tilewidth, glt->tileheight, glt->tiledepth, glt->bytesperpixel);
                                        prevbuffer = resizebuffer;
                                }
                                mip = 0;
-                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                               qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                                CHECKGLERROR
                                if (glt->flags & TEXF_MIPMAP)
                                {
                                        while (width > 1 || height > 1 || depth > 1)
                                        {
-                                               Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->image->bytesperpixel);
+                                               Image_MipReduce(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1, glt->bytesperpixel);
                                                prevbuffer = resizebuffer;
-                                               qglTexImage2D(cubemapside[i], mip++, glt->image->glinternalformat, width, height, 0, glt->image->glformat, GL_UNSIGNED_BYTE, prevbuffer);
+                                               qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);
                                                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;
-       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 | TEXF_FORCENEAREST | TEXF_FORCELINEAR))
-                               continue;
-                       if (image->glformat != texinfo->glformat || image->glinternalformat != texinfo->glinternalformat)
-                               continue;
-                       if (glt->width > image->width || glt->height > image->height || glt->depth > image->depth)
-                               continue;
-
-                       // got a fragments texture, find a place in it if we can
-                       for (best = image->width, i = 0;i < image->width - w;i++)
-                       {
-                               for (best2 = 0, j = 0;j < w;j++)
-                               {
-                                       if (image->blockallocation[i+j] >= best)
-                                               break;
-                                       if (best2 < image->blockallocation[i+j])
-                                               best2 = image->blockallocation[i+j];
-                               }
-                               if (j == w)
-                               {
-                                       // this is a valid spot
-                                       x = i;
-                                       y = best = best2;
-                               }
-                       }
-
-                       if (best + h > image->height)
-                               continue;
-
-                       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 = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-               if (image == NULL)
-               {
-                       Con_Printf ("R_FindImageForTexture: ran out of memory\n");
-                       return;
-               }
-               image->type = GLIMAGETYPE_FRAGMENTS;
-               // make sure the created image is big enough for the fragment
-               for (image->width = block_size;image->width < glt->width;image->width <<= 1);
-               image->height = 1;
-               if (gltexturetypedimensions[glt->texturetype] >= 2)
-                       for (image->height = block_size;image->height < glt->height;image->height <<= 1);
-               image->depth = 1;
-               if (gltexturetypedimensions[glt->texturetype] >= 3)
-                       for (image->depth = block_size;image->depth < glt->depth;image->depth <<= 1);
-               image->blockallocation = (short int *)Mem_Alloc(texturemempool, image->width * sizeof(short));
-               memset(image->blockallocation, 0, image->width * sizeof(short));
-
-               x = 0;
-               y = 0;
-               z = 0;
-               for (i = 0;i < w;i++)
-                       image->blockallocation[x + i] = y + h;
-       }
-       else
-       {
-               for (imagechainpointer = &pool->imagechain;*imagechainpointer;imagechainpointer = &(*imagechainpointer)->imagechain);
-
-               image = (gltextureimage_t *)Mem_Alloc(texturemempool, sizeof(gltextureimage_t));
-               if (image == NULL)
-               {
-                       Con_Printf ("R_FindImageForTexture: ran out of memory\n");
-                       return;
-               }
-               image->type = GLIMAGETYPE_TILE;
-               image->blockallocation = NULL;
-
-               GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->width, glt->height, glt->depth, &image->width, &image->height, &image->depth);
+               GL_SetupTextureParameters(glt->flags, 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 | TEXF_FORCENEAREST | TEXF_FORCELINEAR)) | GLTEXF_UPLOAD;
-       image->bytesperpixel = texinfo->internalbytesperpixel;
-       image->sides = image->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
-       // get a texture number to use
-       qglGenTextures(1, (GLuint *)&image->texnum);
-       *imagechainpointer = image;
-       image->texturecount++;
-
-       glt->x = x;
-       glt->y = y;
-       glt->z = z;
-       glt->image = image;
+       qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);
 }
 
-// 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, 0, 0, 0, glt->width, glt->height, glt->depth);
+       qglGenTextures(1, (GLuint *)&glt->texnum);
+       R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
        if (glt->inputtexels)
        {
                Mem_Free(glt->inputtexels);
@@ -1041,11 +821,6 @@ 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)
-       {
-               Con_Printf ("R_LoadTexture: only 2D fragment textures implemented\n");
-               return NULL;
-       }
        if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
        {
                Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
@@ -1118,27 +893,29 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        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->bytesperpixel = texinfo->internalbytesperpixel;
+       glt->sides = glt->texturetype == GLTEXTURETYPE_CUBEMAP ? 6 : 1;
+       glt->texnum = -1;
 
        if (data)
        {
                glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
-               if (glt->inputtexels == NULL)
-                       Con_Printf ("R_LoadTexture: out of memory\n");
-               else
-                       memcpy(glt->inputtexels, data, 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);
 
        return (rtexture_t *)glt;
@@ -1171,100 +948,12 @@ int R_TextureHasAlpha(rtexture_t *rt)
 
 int R_TextureWidth(rtexture_t *rt)
 {
-       return rt ? ((gltexture_t *)rt)->width : 0;
+       return rt ? ((gltexture_t *)rt)->inputwidth : 0;
 }
 
 int R_TextureHeight(rtexture_t *rt)
 {
-       return rt ? ((gltexture_t *)rt)->height : 0;
-}
-
-void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2)
-{
-       gltexture_t *glt;
-       float iwidth, iheight, idepth;
-       if (cls.state == ca_dedicated)
-       {
-               if (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");
-       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
-       {
-               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;
-               }
-       }
-}
-
-void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2)
-{
-       R_FragmentLocation3D(rt, x, y, NULL, fx1, fy1, NULL, fx2, fy2, NULL);
+       return rt ? ((gltexture_t *)rt)->inputheight : 0;
 }
 
 void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height)