]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_textures.c
movement packet loss tracking
[xonotic/darkplaces.git] / gl_textures.c
index fe13aca500ea487f28821db2deb3aa87fe648aed..1b3858fd6fb4d1e4a8175b43633605d7ee8895c8 100644 (file)
@@ -4,7 +4,8 @@
 #include "jpeg.h"
 #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_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, limited by hardware capabilities (typically 2048, 4096, or 8192)"};
+cvar_t gl_max_lightmapsize = {CVAR_SAVE, "gl_max_lightmapsize", "1024", "maximum allowed texture size for lightmap textures, use larger values to improve rendering speed, as long as there is enough video memory available (setting it too high for the hardware will cause very bad performance)"};
 cvar_t gl_picmip = {CVAR_SAVE, "gl_picmip", "0", "reduces resolution of textures by powers of 2, for example 1 will halve width/height, reducing texture memory usage by 75%"};
 cvar_t 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)"};
@@ -19,6 +20,7 @@ cvar_t gl_texturecompression_q3bsplightmaps = {CVAR_SAVE, "gl_texturecompression
 cvar_t gl_texturecompression_q3bspdeluxemaps = {CVAR_SAVE, "gl_texturecompression_q3bspdeluxemaps", "0", "whether to compress deluxemaps in q3bsp format levels (only levels compiled with q3map2 -deluxe have these)"};
 cvar_t gl_texturecompression_sky = {CVAR_SAVE, "gl_texturecompression_sky", "0", "whether to compress sky textures"};
 cvar_t gl_texturecompression_lightcubemaps = {CVAR_SAVE, "gl_texturecompression_lightcubemaps", "1", "whether to compress light cubemaps (spotlights and other light projection images)"};
+cvar_t gl_nopartialtextureupdates = {CVAR_SAVE, "gl_nopartialtextureupdates", "0", "use alternate path for dynamic lightmap updates"};
 
 int            gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
 int            gl_filter_mag = GL_LINEAR;
@@ -44,30 +46,38 @@ typedef struct textypeinfo_s
        float glinternalbytesperpixel;
        int glformat;
        int glinternalformat;
+       int gltype;
 }
 textypeinfo_t;
 
-static textypeinfo_t textype_palette                = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 3};
-static textypeinfo_t textype_palette_alpha          = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA   , 4};
-static textypeinfo_t textype_palette_compress       = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB};
-static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB};
-static textypeinfo_t textype_rgba                   = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 3};
-static textypeinfo_t textype_rgba_alpha             = {TEXTYPE_RGBA   , 4, 4, 4.0f, GL_RGBA   , 4};
-static textypeinfo_t textype_rgba_compress          = {TEXTYPE_RGBA   , 4, 4, 0.5f, GL_RGBA   , GL_COMPRESSED_RGB_ARB};
-static textypeinfo_t textype_rgba_alpha_compress    = {TEXTYPE_RGBA   , 4, 4, 1.0f, GL_RGBA   , GL_COMPRESSED_RGBA_ARB};
-static textypeinfo_t textype_bgra                   = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 3};
-static textypeinfo_t textype_bgra_alpha             = {TEXTYPE_BGRA   , 4, 4, 4.0f, GL_BGRA   , 4};
-static textypeinfo_t textype_bgra_compress          = {TEXTYPE_BGRA   , 4, 4, 0.5f, GL_BGRA   , GL_COMPRESSED_RGB_ARB};
-static textypeinfo_t textype_bgra_alpha_compress    = {TEXTYPE_BGRA   , 4, 4, 1.0f, GL_BGRA   , GL_COMPRESSED_RGBA_ARB};
-
-#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_shadowmap16            = {TEXTYPE_SHADOWMAP,2,2, 2.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16_ARB, GL_UNSIGNED_SHORT};
+static textypeinfo_t textype_shadowmap24            = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
+
+typedef enum gltexturetype_e
+{
+       GLTEXTURETYPE_2D,
+       GLTEXTURETYPE_3D,
+       GLTEXTURETYPE_CUBEMAP,
+       GLTEXTURETYPE_RECTANGLE,
+       GLTEXTURETYPE_TOTAL
+}
+gltexturetype_t;
+
+static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
+static int gltexturetypebindingenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB};
+static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {2, 3, 2, 2};
 static int cubemapside[6] =
 {
        GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
@@ -91,6 +101,10 @@ typedef struct gltexture_s
        void *updatacallback_data;
        // --- [11/22/2007 Black]
 
+       // stores backup copy of texture for deferred texture updates (r_nopartialtextureupdates cvar)
+       unsigned char *bufferpixels;
+       qboolean buffermodified;
+
        // pointer to texturepool (check this to see if the texture is allocated)
        struct gltexturepool_s *pool;
        // pointer to next texture in texturepool chain
@@ -114,16 +128,18 @@ typedef struct gltexture_s
        // 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)
+       // (power of 2 if vid.support.arb_texture_non_power_of_two is not supported)
        int tilewidth, tileheight, tiledepth;
        // 1 or 6 depending on texturetype
        int sides;
        // bytes per pixel
        int bytesperpixel;
-       // GL_RGB or GL_RGBA
+       // 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;
 
@@ -146,7 +162,7 @@ static int texturebuffersize = 0;
 
 static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
 {
-       if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && gl_support_texture_compression)
+       if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
        {
                if (flags & TEXF_ALPHA)
                {
@@ -206,6 +222,8 @@ static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
                                return &textype_rgba;
                        case TEXTYPE_BGRA:
                                return &textype_bgra;
+                       case TEXTYPE_SHADOWMAP:
+                               return (flags & TEXF_LOWPRECISION) ? &textype_shadowmap16 : &textype_shadowmap24;
                        default:
                                Host_Error("R_GetTexTypeInfo: unknown texture format");
                                return NULL;
@@ -252,41 +270,6 @@ static void R_UpdateDynamicTexture(gltexture_t *glt) {
        }
 }
 
-static void R_UploadTexture(gltexture_t *t);
-
-static void R_PrecacheTexture(gltexture_t *glt)
-{
-       int precache;
-       precache = false;
-       if (glt->flags & TEXF_ALWAYSPRECACHE)
-               precache = true;
-       else if (r_precachetextures.integer >= 2)
-               precache = true;
-       else if (r_precachetextures.integer >= 1)
-               if (glt->flags & TEXF_PRECACHE)
-                       precache = true;
-
-       if (precache)
-               R_UploadTexture(glt);
-}
-
-int R_RealGetTexture(rtexture_t *rt)
-{
-       if (rt)
-       {
-               gltexture_t *glt;
-               glt = (gltexture_t *)rt;
-               if (glt->flags & GLTEXF_DYNAMIC)
-                       R_UpdateDynamicTexture(glt);
-               if (glt->flags & GLTEXF_UPLOAD)
-                       R_UploadTexture(glt);
-
-               return glt->texnum;
-       }
-       else
-               return 0;
-}
-
 void R_PurgeTexture(rtexture_t *rt)
 {
        if(rt && !(((gltexture_t*) rt)->flags & TEXF_PERSISTENT)) {
@@ -408,6 +391,7 @@ static void GL_TextureMode_f (void)
        // change all the existing mipmap texture objects
        // FIXME: force renderer(/client/something?) restart instead?
        CHECKGLERROR
+       GL_ActiveTexture(0);
        for (pool = gltexturepoolchain;pool;pool = pool->next)
        {
                for (glt = pool->gltchain;glt;glt = glt->chain)
@@ -415,7 +399,7 @@ static void GL_TextureMode_f (void)
                        // only update already uploaded images
                        if (!(glt->flags & (GLTEXF_UPLOAD | TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
                        {
-                               qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+                               oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
                                qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
                                if (glt->flags & TEXF_MIPMAP)
                                {
@@ -436,33 +420,28 @@ static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, in
 {
        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;
+               maxsize = vid.maxtexturesize_2d;
+               if (flags & TEXF_PICMIP)
+               {
+                       maxsize = bound(1, gl_max_size.integer, maxsize);
+                       picmip = gl_picmip.integer;
+               }
                break;
        case GLTEXTURETYPE_3D:
-               maxsize = gl_max_3d_texture_size;
+               maxsize = vid.maxtexturesize_3d;
                break;
        case GLTEXTURETYPE_CUBEMAP:
-               maxsize = gl_max_cube_map_texture_size;
+               maxsize = vid.maxtexturesize_cubemap;
                break;
        }
 
-       if (flags & TEXF_PICMIP)
-       {
-               maxsize = min(maxsize, gl_max_size.integer);
-               picmip = gl_picmip.integer;
-       }
-
        if (outwidth)
        {
-               if (gl_support_arb_texture_non_power_of_two)
+               if (vid.support.arb_texture_non_power_of_two)
                        width2 = min(inwidth >> picmip, maxsize);
                else
                {
@@ -473,7 +452,7 @@ static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, in
        }
        if (outheight)
        {
-               if (gl_support_arb_texture_non_power_of_two)
+               if (vid.support.arb_texture_non_power_of_two)
                        height2 = min(inheight >> picmip, maxsize);
                else
                {
@@ -484,7 +463,7 @@ static void GL_Texture_CalcImageSize(int texturetype, int flags, int inwidth, in
        }
        if (outdepth)
        {
-               if (gl_support_arb_texture_non_power_of_two)
+               if (vid.support.arb_texture_non_power_of_two)
                        depth2 = min(indepth >> picmip, maxsize);
                else
                {
@@ -556,7 +535,7 @@ void R_TextureStats_Print(qboolean printeach, qboolean printpool, qboolean print
                                Con_Printf("%c%4i%c%c%4i%c %s %s %s %s\n", isloaded ? '[' : ' ', (glsize + 1023) / 1024, isloaded ? ']' : ' ', glt->inputtexels ? '[' : ' ', (glt->inputdatasize + 1023) / 1024, glt->inputtexels ? ']' : ' ', isloaded ? "loaded" : "      ", (glt->flags & TEXF_MIPMAP) ? "mip" : "   ", (glt->flags & TEXF_ALPHA) ? "alpha" : "     ", glt->identifier);
                }
                if (printpool)
-                       Con_Printf("texturepool %10p total: %i (%.3fMB, %.3fMB original), uploaded %i (%.3fMB, %.3fMB original), upload on demand %i (%.3fMB, %.3fMB original)\n", pool, pooltotal, pooltotalt / 1048576.0, pooltotalp / 1048576.0, poolloaded, poolloadedt / 1048576.0, poolloadedp / 1048576.0, pooltotal - poolloaded, (pooltotalt - poolloadedt) / 1048576.0, (pooltotalp - poolloadedp) / 1048576.0);
+                       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;
@@ -619,6 +598,7 @@ void R_Textures_Init (void)
        Cmd_AddCommand("r_texturestats", R_TextureStats_f, "print information about all loaded textures and some statistics");
        Cvar_RegisterVariable (&gl_max_size);
        Cvar_RegisterVariable (&gl_picmip);
+       Cvar_RegisterVariable (&gl_max_lightmapsize);
        Cvar_RegisterVariable (&r_lerpimages);
        Cvar_RegisterVariable (&r_precachetextures);
        Cvar_RegisterVariable (&gl_texture_anisotropy);
@@ -632,6 +612,7 @@ void R_Textures_Init (void)
        Cvar_RegisterVariable (&gl_texturecompression_q3bspdeluxemaps);
        Cvar_RegisterVariable (&gl_texturecompression_sky);
        Cvar_RegisterVariable (&gl_texturecompression_lightcubemaps);
+       Cvar_RegisterVariable (&gl_nopartialtextureupdates);
 
        R_RegisterModule("R_Textures", r_textures_start, r_textures_shutdown, r_textures_newmap);
 }
@@ -662,11 +643,12 @@ void R_Textures_Frame (void)
                gltexturepool_t *pool;
                GLint oldbindtexnum;
 
-               old_aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
+               old_aniso = bound(1, gl_texture_anisotropy.integer, (int)vid.max_anisotropy);
 
                Cvar_SetValueQuick(&gl_texture_anisotropy, old_aniso);
 
                CHECKGLERROR
+               GL_ActiveTexture(0);
                for (pool = gltexturepoolchain;pool;pool = pool->next)
                {
                        for (glt = pool->gltchain;glt;glt = glt->chain)
@@ -674,7 +656,7 @@ void R_Textures_Frame (void)
                                // only update already uploaded images
                                if ((glt->flags & (GLTEXF_UPLOAD | TEXF_MIPMAP)) == TEXF_MIPMAP)
                                {
-                                       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+                                       oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
 
                                        qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
                                        qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
@@ -702,16 +684,16 @@ void R_MakeResizeBufferBigger(int size)
        }
 }
 
-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;
+       int wrapmode = (flags & TEXF_CLAMP) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 
        CHECKGLERROR
 
-       if (gl_support_anisotropy && (flags & TEXF_MIPMAP))
+       if (vid.support.ext_texture_filter_anisotropic && (flags & TEXF_MIPMAP))
        {
-               int aniso = bound(1, gl_texture_anisotropy.integer, gl_max_anisotropy);
+               int aniso = bound(1, gl_texture_anisotropy.integer, (int)vid.max_anisotropy);
                if (gl_texture_anisotropy.integer != aniso)
                        Cvar_SetValueQuick(&gl_texture_anisotropy, aniso);
                qglTexParameteri(textureenum, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);CHECKGLERROR
@@ -768,6 +750,23 @@ static void GL_SetupTextureParameters(int flags, int texturetype)
                qglTexParameteri(textureenum, GL_TEXTURE_MAG_FILTER, gl_filter_mag);CHECKGLERROR
        }
 
+       if (textype == TEXTYPE_SHADOWMAP)
+       {
+               if (vid.support.arb_shadow)
+               {
+                       if (flags & TEXF_COMPARE)
+                       {
+                               qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);CHECKGLERROR
+                       }
+                       else
+                       {
+                               qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);CHECKGLERROR
+                       }
+                       qglTexParameteri(textureenum, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL);CHECKGLERROR
+               }
+               qglTexParameteri(textureenum, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);CHECKGLERROR
+       }
+
        CHECKGLERROR
 }
 
@@ -781,11 +780,12 @@ static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int
        CHECKGLERROR
 
        // we need to restore the texture binding after finishing the upload
-       qglGetIntegerv(gltexturetypebindingenums[glt->texturetype], &oldbindtexnum);CHECKGLERROR
+       GL_ActiveTexture(0);
+       oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
        qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
 
        // these are rounded up versions of the size to do better resampling
-       if (gl_support_arb_texture_non_power_of_two)
+       if (vid.support.arb_texture_non_power_of_two || glt->texturetype == GLTEXTURETYPE_RECTANGLE)
        {
                width = glt->inputwidth;
                height = glt->inputheight;
@@ -813,22 +813,19 @@ static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int
                prevbuffer = colorconvertbuffer;
        }
 
-       if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth)
+       if ((glt->flags & (TEXF_MIPMAP | TEXF_PICMIP | GLTEXF_UPLOAD)) == 0 && glt->inputwidth == glt->tilewidth && glt->inputheight == glt->tileheight && glt->inputdepth == glt->tiledepth && (fragx != 0 || fragy != 0 || fragwidth != glt->tilewidth || fragheight != glt->tileheight))
        {
                // update a portion of the image
                switch(glt->texturetype)
                {
-               case GLTEXTURETYPE_1D:
-                       qglTexSubImage1D(GL_TEXTURE_1D, 0, fragx, fragwidth, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
-                       break;
                case GLTEXTURETYPE_2D:
-                       qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+                       qglTexSubImage2D(GL_TEXTURE_2D, 0, fragx, fragy, fragwidth, fragheight, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                        break;
                case GLTEXTURETYPE_3D:
-                       qglTexSubImage3D(GL_TEXTURE_3D, 0, fragx, fragy, fragz, fragwidth, fragheight, fragdepth, glt->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: partial update of type other than 1D, 2D, or 3D");
+                       Host_Error("R_Upload: partial update of type other than 2D");
                        break;
                }
        }
@@ -856,7 +853,7 @@ static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int
                        }
                }
                mip = 0;
-               if (gl_support_texture_compression)
+               if (qglGetCompressedTexImageARB)
                {
                        if (gl_texturecompression.integer >= 2)
                                qglHint(GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
@@ -866,39 +863,27 @@ static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int
                }
                switch(glt->texturetype)
                {
-               case GLTEXTURETYPE_1D:
-                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
-                       if (glt->flags & TEXF_MIPMAP)
-                       {
-                               while (width > 1 || height > 1 || depth > 1)
-                               {
-                                       Image_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
-                                       prevbuffer = resizebuffer;
-                                       qglTexImage1D(GL_TEXTURE_1D, mip++, glt->glinternalformat, width, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
-                               }
-                       }
-                       break;
                case GLTEXTURETYPE_2D:
-                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+                       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_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage2D(GL_TEXTURE_2D, mip++, glt->glinternalformat, width, height, 0, glt->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->glinternalformat, width, height, depth, 0, glt->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_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                        prevbuffer = resizebuffer;
-                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, GL_UNSIGNED_BYTE, prevbuffer);CHECKGLERROR
+                                       qglTexImage3D(GL_TEXTURE_3D, mip++, glt->glinternalformat, width, height, depth, 0, glt->glformat, glt->gltype, prevbuffer);CHECKGLERROR
                                }
                        }
                        break;
@@ -922,40 +907,54 @@ static void R_Upload(gltexture_t *glt, const unsigned char *data, int fragx, int
                                        prevbuffer = resizebuffer;
                                }
                                mip = 0;
-                               qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->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_MipReduce32(prevbuffer, resizebuffer, &width, &height, &depth, 1, 1, 1);
                                                prevbuffer = resizebuffer;
-                                               qglTexImage2D(cubemapside[i], mip++, glt->glinternalformat, width, height, 0, glt->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->flags, glt->texturetype);
+               GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
        }
        qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
 }
 
-static void R_UploadTexture (gltexture_t *glt)
+int R_RealGetTexture(rtexture_t *rt)
 {
-       if (!(glt->flags & GLTEXF_UPLOAD))
-               return;
-
-       CHECKGLERROR
-       qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
-       R_Upload(glt, glt->inputtexels, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
-       if (glt->inputtexels)
+       if (rt)
        {
-               Mem_Free(glt->inputtexels);
-               glt->inputtexels = NULL;
-               glt->flags |= GLTEXF_DESTROYED;
+               gltexture_t *glt;
+               glt = (gltexture_t *)rt;
+               if (glt->flags & GLTEXF_DYNAMIC)
+                       R_UpdateDynamicTexture(glt);
+               if (glt->flags & GLTEXF_UPLOAD)
+               {
+                       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);
+                               glt->inputtexels = NULL;
+                               glt->flags |= GLTEXF_DESTROYED;
+                       }
+                       else if (glt->flags & GLTEXF_DESTROYED)
+                               Con_Printf("R_GetTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
+               }
+
+               return glt->texnum;
        }
-       else if (glt->flags & GLTEXF_DESTROYED)
-               Con_Printf("R_UploadTexture: Texture %s already uploaded and destroyed.  Can not upload original image again.  Uploaded blank texture.\n", glt->identifier);
+       else
+               return 0;
 }
 
 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)
@@ -964,16 +963,22 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        gltexture_t *glt;
        gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
        textypeinfo_t *texinfo;
+       int precache;
 
        if (cls.state == ca_dedicated)
                return NULL;
 
-       if (texturetype == GLTEXTURETYPE_CUBEMAP && !gl_texturecubemap)
+       if (texturetype == GLTEXTURETYPE_RECTANGLE && !vid.support.arb_texture_rectangle)
+       {
+               Con_Printf ("R_LoadTexture: rectangle texture not supported by driver\n");
+               return NULL;
+       }
+       if (texturetype == GLTEXTURETYPE_CUBEMAP && !vid.support.arb_texture_cube_map)
        {
                Con_Printf ("R_LoadTexture: cubemap texture not supported by driver\n");
                return NULL;
        }
-       if (texturetype == GLTEXTURETYPE_3D && !gl_texture3d)
+       if (texturetype == GLTEXTURETYPE_3D && !vid.support.ext_texture_3d)
        {
                Con_Printf ("R_LoadTexture: 3d texture not supported by driver\n");
                return NULL;
@@ -1025,6 +1030,8 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
                        }
                }
                break;
+       case TEXTYPE_SHADOWMAP:
+               break;
        default:
                Host_Error("R_LoadTexture: unknown texture type");
        }
@@ -1045,6 +1052,7 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        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;
@@ -1053,16 +1061,47 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        glt->updatecallback = NULL;
        glt->updatacallback_data = NULL;
 
-       if (data)
+       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
+
+       precache = false;
+       if (glt->flags & TEXF_ALWAYSPRECACHE)
+               precache = true;
+       else if (r_precachetextures.integer >= 2)
+               precache = true;
+       else if (r_precachetextures.integer >= 1)
+               if (glt->flags & TEXF_PRECACHE)
+                       precache = true;
+
+       if (precache)
        {
-               glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
-               memcpy(glt->inputtexels, data, size);
+               // immediate upload (most common case)
+               // data may be NULL (blank texture for dynamic rendering)
+               CHECKGLERROR
+               qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+               R_Upload(glt, data, 0, 0, 0, glt->inputwidth, glt->inputheight, glt->inputdepth);
+               if ((glt->flags & TEXF_ALLOWUPDATES) && gl_nopartialtextureupdates.integer)
+                       glt->bufferpixels = Mem_Alloc(texturemempool, glt->tilewidth*glt->tileheight*glt->tiledepth*glt->sides*glt->bytesperpixel);
+       }
+       else if (data)
+       {
+               // deferred texture upload (menu graphics)
+               // optimize first if possible
+               if ((textype == TEXTYPE_BGRA || textype == TEXTYPE_RGBA) && glt->inputwidth * glt->inputheight * glt->inputdepth > glt->tilewidth * glt->tileheight * glt->tiledepth)
+               {
+                       glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, glt->tilewidth*glt->tileheight*glt->tiledepth*glt->sides*glt->bytesperpixel);
+                       Image_Resample32(data, glt->inputwidth, glt->inputheight, glt->inputdepth, glt->inputtexels, glt->tilewidth, glt->tileheight, glt->tiledepth, r_lerpimages.integer);
+                       // change texture size accordingly
+                       glt->inputwidth = glt->tilewidth;
+                       glt->inputheight = glt->tileheight;
+                       glt->inputdepth = glt->tiledepth;
+                       GL_Texture_CalcImageSize(glt->texturetype, glt->flags, glt->inputwidth, glt->inputheight, glt->inputdepth, &glt->tilewidth, &glt->tileheight, &glt->tiledepth);
+               }
+               else
+               {
+                       glt->inputtexels = (unsigned char *)Mem_Alloc(texturemempool, size);
+                       memcpy(glt->inputtexels, data, size);
+               }
        }
-       else
-               glt->inputtexels = NULL;
-
-       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);
@@ -1070,11 +1109,6 @@ static rtexture_t *R_SetupTexture(rtexturepool_t *rtexturepool, const char *iden
        return (rtexture_t *)glt;
 }
 
-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 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);
@@ -1090,9 +1124,36 @@ rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *ident
        return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, flags, textype, GLTEXTURETYPE_CUBEMAP, data, palette);
 }
 
-int R_TextureHasAlpha(rtexture_t *rt)
+rtexture_t *R_LoadTextureRectangle(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_RECTANGLE, data, palette);
+}
+
+static int R_ShadowMapTextureFlags(int precision, qboolean filter)
 {
-       return rt ? (((gltexture_t *)rt)->flags & TEXF_ALPHA) != 0 : false;
+       int flags = TEXF_ALWAYSPRECACHE | TEXF_CLAMP;
+       if (filter)
+               flags |= TEXF_FORCELINEAR | TEXF_COMPARE;
+       else
+               flags |= TEXF_FORCENEAREST;
+       if (precision <= 16)
+               flags |= TEXF_LOWPRECISION;
+       return flags;
+}
+
+rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_RECTANGLE, NULL, NULL);
+}
+
+rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter)
+{
+       return R_SetupTexture(rtexturepool, identifier, width, height, 1, 1, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_2D, NULL, NULL);
+}
+
+rtexture_t *R_LoadTextureShadowMapCube(rtexturepool_t *rtexturepool, const char *identifier, int width, int precision, qboolean filter)
+{
+    return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
 }
 
 int R_TextureWidth(rtexture_t *rt)
@@ -1107,19 +1168,64 @@ int R_TextureHeight(rtexture_t *rt)
 
 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");
+       gltexture_t *glt = (gltexture_t *)rt;
        if (data == NULL)
                Host_Error("R_UpdateTexture: no data supplied");
-       glt = (gltexture_t *)rt;
+       if (glt == NULL)
+               Host_Error("R_UpdateTexture: no texture supplied");
+       if (!glt->texnum)
+               Host_Error("R_UpdateTexture: texture has not been uploaded yet");
+       // update part of the texture
+       if (glt->bufferpixels)
+       {
+               int j;
+               int bpp = glt->bytesperpixel;
+               int inputskip = width*bpp;
+               int outputskip = glt->tilewidth*bpp;
+               const unsigned char *input = data;
+               unsigned char *output = glt->bufferpixels;
+               if (x < 0)
+               {
+                       width += x;
+                       input -= x*bpp;
+                       x = 0;
+               }
+               if (y < 0)
+               {
+                       height += y;
+                       input -= y*inputskip;
+                       y = 0;
+               }
+               if (width > glt->tilewidth - x)
+                       width = glt->tilewidth - x;
+               if (height > glt->tileheight - y)
+                       height = glt->tileheight - y;
+               if (width < 1 || height < 1)
+                       return;
+               glt->buffermodified = true;
+               output += y*outputskip + x*bpp;
+               for (j = 0;j < height;j++, output += outputskip, input += inputskip)
+                       memcpy(output, input, width*bpp);
+               if (!(glt->flags & TEXF_MANUALFLUSHUPDATES))
+                       R_FlushTexture(rt);
+       }
+       else
+               R_Upload(glt, data, x, y, 0, width, height, 1);
+}
 
-       // we need it to be uploaded before we can update a part of it
-       if (glt->flags & GLTEXF_UPLOAD)
-               R_UploadTexture(glt);
+void R_FlushTexture(rtexture_t *rt)
+{
+       gltexture_t *glt;
+       if (rt == NULL)
+               Host_Error("R_FlushTexture: no texture supplied");
 
        // update part of the texture
-       R_Upload(glt, data, x, y, 0, width, height, 1);
+       glt = (gltexture_t *)rt;
+
+       if (!glt->buffermodified || !glt->bufferpixels)
+               return;
+       glt->buffermodified = false;
+       R_Upload(glt, glt->bufferpixels, 0, 0, 0, glt->tilewidth, glt->tileheight, glt->tiledepth);
 }
 
 void R_ClearTexture (rtexture_t *rt)