]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - ft2.c
console: improve default text legibility and background alpha behaviour
[xonotic/darkplaces.git] / ft2.c
diff --git a/ft2.c b/ft2.c
index 51d892e68df36c3edb35306cde7520b98f5441c2..c7fe3ace1f46896eb31a9b0c0c6025514b8405b6 100644 (file)
--- a/ft2.c
+++ b/ft2.c
@@ -27,19 +27,42 @@ static int img_fontmap[256] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 };
 
+/*
+ * Some big blocks of Unicode characters, according to
+ *     http://www.unicode.org/Public/UNIDATA/Blocks.txt
+ *
+ * Let's call these "bigblocks".
+ * These characters are "spreaded", and ordinary maps will 
+ *     waste huge amount of resources rendering/caching unused glyphs.
+ *
+ * So, a new design is introduced to solve the problem:
+ *     incremental maps, in which only used glyphs are stored.
+ */
+static const Uchar unicode_bigblocks[] = {
+       0x3400, 0x4DBF,         //   6592  CJK Unified Ideographs Extension A
+       0x4E00, 0x9FFF,         //  20992  CJK Unified Ideographs
+       0xAC00, 0xD7AF,         //  11184  Hangul Syllables
+       0xE000, 0xF8FF,         //   6400  Private Use Area
+       0x10000, 0x10FFFF   //         Everything above
+};
+
 /*
 ================================================================================
 CVars introduced with the freetype extension
 ================================================================================
 */
 
-cvar_t r_font_disable_freetype = {CVAR_SAVE, "r_font_disable_freetype", "1", "disable freetype support for fonts entirely"};
-cvar_t r_font_use_alpha_textures = {CVAR_SAVE, "r_font_use_alpha_textures", "0", "use alpha-textures for font rendering, this should safe memory"};
-cvar_t r_font_size_snapping = {CVAR_SAVE, "r_font_size_snapping", "1", "stick to good looking font sizes whenever possible - bad when the mod doesn't support it!"};
-cvar_t r_font_kerning = {CVAR_SAVE, "r_font_kerning", "1", "Use kerning if available"};
-cvar_t r_font_diskcache = {CVAR_SAVE, "r_font_diskcache", "0", "save font textures to disk for future loading rather than generating them every time"};
-cvar_t r_font_compress = {CVAR_SAVE, "r_font_compress", "0", "use texture compression on font textures to save video memory"};
-cvar_t developer_font = {CVAR_SAVE, "developer_font", "0", "prints debug messages about fonts"};
+cvar_t r_font_disable_freetype = {CF_CLIENT | CF_ARCHIVE, "r_font_disable_freetype", "0", "disable freetype support for fonts entirely"};
+cvar_t r_font_size_snapping = {CF_CLIENT | CF_ARCHIVE, "r_font_size_snapping", "1", "stick to good looking font sizes whenever possible - bad when the mod doesn't support it!"};
+cvar_t r_font_kerning = {CF_CLIENT | CF_ARCHIVE, "r_font_kerning", "1", "Use kerning if available"};
+cvar_t r_font_diskcache = {CF_CLIENT | CF_ARCHIVE, "r_font_diskcache", "0", "[deprecated, not effective] save font textures to disk for future loading rather than generating them every time"};
+cvar_t r_font_compress = {CF_CLIENT | CF_ARCHIVE, "r_font_compress", "0", "use texture compression on font textures to save video memory"};
+cvar_t r_font_nonpoweroftwo = {CF_CLIENT | CF_ARCHIVE, "r_font_nonpoweroftwo", "1", "use nonpoweroftwo textures for font (saves memory, potentially slower)"};
+cvar_t developer_font = {CF_CLIENT | CF_ARCHIVE, "developer_font", "0", "prints debug messages about fonts"};
+
+cvar_t r_font_disable_incmaps = {CF_CLIENT | CF_ARCHIVE, "r_font_disable_incmaps", "0", "always to load a full glyph map for individual unmapped character, even when it will mean extreme resources waste"};
+
+#ifndef DP_FREETYPE_STATIC
 
 /*
 ================================================================================
@@ -135,6 +158,85 @@ static dllfunction_t ft2funcs[] =
 /// Handle for FreeType2 DLL
 static dllhandle_t ft2_dll = NULL;
 
+#else
+
+FT_EXPORT( FT_Error )
+(FT_Init_FreeType)( FT_Library  *alibrary );
+FT_EXPORT( FT_Error )
+(FT_Done_FreeType)( FT_Library  library );
+/*
+FT_EXPORT( FT_Error )
+(FT_New_Face)( FT_Library   library,
+                const char*  filepathname,
+                FT_Long      face_index,
+                FT_Face     *aface );
+*/
+FT_EXPORT( FT_Error )
+(FT_New_Memory_Face)( FT_Library      library,
+                       const FT_Byte*  file_base,
+                       FT_Long         file_size,
+                       FT_Long         face_index,
+                       FT_Face        *aface );
+FT_EXPORT( FT_Error )
+(FT_Done_Face)( FT_Face  face );
+FT_EXPORT( FT_Error )
+(FT_Select_Size)( FT_Face  face,
+                   FT_Int   strike_index );
+FT_EXPORT( FT_Error )
+(FT_Request_Size)( FT_Face          face,
+                    FT_Size_Request  req );
+FT_EXPORT( FT_Error )
+(FT_Set_Char_Size)( FT_Face     face,
+                     FT_F26Dot6  char_width,
+                     FT_F26Dot6  char_height,
+                     FT_UInt     horz_resolution,
+                     FT_UInt     vert_resolution );
+FT_EXPORT( FT_Error )
+(FT_Set_Pixel_Sizes)( FT_Face  face,
+                       FT_UInt  pixel_width,
+                       FT_UInt  pixel_height );
+FT_EXPORT( FT_Error )
+(FT_Load_Glyph)( FT_Face   face,
+                  FT_UInt   glyph_index,
+                  FT_Int32  load_flags );
+FT_EXPORT( FT_Error )
+(FT_Load_Char)( FT_Face   face,
+                 FT_ULong  char_code,
+                 FT_Int32  load_flags );
+FT_EXPORT( FT_UInt )
+(FT_Get_Char_Index)( FT_Face   face,
+                      FT_ULong  charcode );
+FT_EXPORT( FT_Error )
+(FT_Render_Glyph)( FT_GlyphSlot    slot,
+                    FT_Render_Mode  render_mode );
+FT_EXPORT( FT_Error )
+(FT_Get_Kerning)( FT_Face     face,
+                   FT_UInt     left_glyph,
+                   FT_UInt     right_glyph,
+                   FT_UInt     kern_mode,
+                   FT_Vector  *akerning );
+FT_EXPORT( FT_Error )
+(FT_Attach_Stream)( FT_Face        face,
+                     FT_Open_Args*  parameters );
+
+#define qFT_Init_FreeType              FT_Init_FreeType
+#define qFT_Done_FreeType              FT_Done_FreeType
+//#define qFT_New_Face                 FT_New_Face
+#define qFT_New_Memory_Face            FT_New_Memory_Face
+#define qFT_Done_Face                  FT_Done_Face
+#define qFT_Select_Size                        FT_Select_Size
+#define qFT_Request_Size               FT_Request_Size
+#define qFT_Set_Char_Size              FT_Set_Char_Size
+#define qFT_Set_Pixel_Sizes            FT_Set_Pixel_Sizes
+#define qFT_Load_Glyph                 FT_Load_Glyph
+#define qFT_Load_Char                  FT_Load_Char
+#define qFT_Get_Char_Index             FT_Get_Char_Index
+#define qFT_Render_Glyph               FT_Render_Glyph
+#define qFT_Get_Kerning                        FT_Get_Kerning
+#define qFT_Attach_Stream              FT_Attach_Stream
+
+#endif
+
 /// Memory pool for fonts
 static mempool_t *font_mempool= NULL;
 
@@ -164,7 +266,7 @@ typedef struct fontfilecache_s
 fontfilecache_t;
 #define MAX_FONTFILES 8
 static fontfilecache_t fontfiles[MAX_FONTFILES];
-static const unsigned char *fontfilecache_LoadFile(const char *path, qboolean quiet, fs_offset_t *filesizepointer)
+static const unsigned char *fontfilecache_LoadFile(const char *path, qbool quiet, fs_offset_t *filesizepointer)
 {
        int i;
        unsigned char *buf;
@@ -186,7 +288,7 @@ static const unsigned char *fontfilecache_LoadFile(const char *path, qboolean qu
                for(i = 0; i < MAX_FONTFILES; ++i)
                        if(fontfiles[i].refcount <= 0)
                        {
-                               strlcpy(fontfiles[i].path, path, sizeof(fontfiles[i].path));
+                               dp_strlcpy(fontfiles[i].path, path, sizeof(fontfiles[i].path));
                                fontfiles[i].len = *filesizepointer;
                                fontfiles[i].buf = buf;
                                fontfiles[i].refcount = 1;
@@ -244,7 +346,9 @@ void Font_CloseLibrary (void)
                qFT_Done_FreeType(font_ft2lib);
                font_ft2lib = NULL;
        }
-       Sys_UnloadLibrary (&ft2_dll);
+#ifndef DP_FREETYPE_STATIC
+       Sys_FreeLibrary (&ft2_dll);
+#endif
        pp.buf = NULL;
 }
 
@@ -255,8 +359,9 @@ Font_OpenLibrary
 Try to load the FreeType2 DLL
 ====================
 */
-qboolean Font_OpenLibrary (void)
+qbool Font_OpenLibrary (void)
 {
+#ifndef DP_FREETYPE_STATIC
        const char* dllnames [] =
        {
 #if defined(WIN32)
@@ -271,17 +376,20 @@ qboolean Font_OpenLibrary (void)
 #endif
                NULL
        };
+#endif
 
        if (r_font_disable_freetype.integer)
                return false;
 
+#ifndef DP_FREETYPE_STATIC
        // Already loaded?
        if (ft2_dll)
                return true;
 
        // Load the DLL
-       if (!Sys_LoadLibrary (dllnames, &ft2_dll, ft2funcs))
+       if (!Sys_LoadDependency (dllnames, &ft2_dll, ft2funcs))
                return false;
+#endif
        return true;
 }
 
@@ -300,7 +408,7 @@ void font_start(void)
 
        if (qFT_Init_FreeType(&font_ft2lib))
        {
-               Con_Print("ERROR: Failed to initialize the FreeType2 library!\n");
+               Con_Print(CON_ERROR "ERROR: Failed to initialize the FreeType2 library!\n");
                Font_CloseLibrary();
                return;
        }
@@ -308,7 +416,7 @@ void font_start(void)
        font_mempool = Mem_AllocPool("FONT", 0, NULL);
        if (!font_mempool)
        {
-               Con_Print("ERROR: Failed to allocate FONT memory pool!\n");
+               Con_Print(CON_ERROR "ERROR: Failed to allocate FONT memory pool!\n");
                Font_CloseLibrary();
                return;
        }
@@ -334,14 +442,16 @@ void font_newmap(void)
 
 void Font_Init(void)
 {
+       Cvar_RegisterVariable(&r_font_nonpoweroftwo);
        Cvar_RegisterVariable(&r_font_disable_freetype);
-       Cvar_RegisterVariable(&r_font_use_alpha_textures);
        Cvar_RegisterVariable(&r_font_size_snapping);
        Cvar_RegisterVariable(&r_font_kerning);
        Cvar_RegisterVariable(&r_font_diskcache);
        Cvar_RegisterVariable(&r_font_compress);
        Cvar_RegisterVariable(&developer_font);
 
+       Cvar_RegisterVariable(&r_font_disable_incmaps);
+
        // let's open it at startup already
        Font_OpenLibrary();
 }
@@ -356,12 +466,16 @@ Implementation of a more or less lazy font loading and rendering code.
 
 ft2_font_t *Font_Alloc(void)
 {
+#ifndef DP_FREETYPE_STATIC
        if (!ft2_dll)
+#else
+       if (r_font_disable_freetype.integer)
+#endif
                return NULL;
        return (ft2_font_t *)Mem_Alloc(font_mempool, sizeof(ft2_font_t));
 }
 
-qboolean Font_Attach(ft2_font_t *font, ft2_attachment_t *attachment)
+static qbool Font_Attach(ft2_font_t *font, ft2_attachment_t *attachment)
 {
        ft2_attachment_t *na;
 
@@ -388,7 +502,7 @@ float Font_VirtualToRealSize(float sz)
        if(sz < 0)
                return sz;
        //vw = ((vid.width > 0) ? vid.width : vid_width.value);
-       vh = ((vid.height > 0) ? vid.height : vid_height.value);
+       vh = ((vid.mode.height > 0) ? vid.mode.height : vid_height.value);
        // now try to scale to our actual size:
        sn = sz * vh / vid_conheight.value;
        si = (int)sn;
@@ -402,12 +516,13 @@ float Font_SnapTo(float val, float snapwidth)
        return floor(val / snapwidth + 0.5f) * snapwidth;
 }
 
-static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *settings, ft2_font_t *font);
-static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only);
-qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt)
+static qbool Font_LoadFile(const char *name, int _face, ft2_settings_t *settings, ft2_font_t *font);
+static qbool Font_LoadSize(ft2_font_t *font, float size, qbool check_only);
+qbool Font_LoadFont(const char *name, dp_font_t *dpfnt)
 {
        int s, count, i;
        ft2_font_t *ft2, *fbfont, *fb;
+       char vabuf[1024];
 
        ft2 = Font_Alloc();
        if (!ft2)
@@ -432,7 +547,7 @@ qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt)
                        Mem_Free(ft2);
                        return false;
                }
-               strlcpy(ft2->name, name, sizeof(ft2->name));
+               dp_strlcpy(ft2->name, name, sizeof(ft2->name));
                ft2->image_font = true;
                ft2->has_kerning = false;
        }
@@ -449,17 +564,17 @@ qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt)
                        break;
                if (! (fb = Font_Alloc()) )
                {
-                       Con_Printf("Failed to allocate font for fallback %i of font %s\n", i, name);
+                       Con_Printf(CON_ERROR "Failed to allocate font for fallback %i of font %s\n", i, name);
                        break;
                }
 
                if (!Font_LoadFile(dpfnt->fallbacks[i], dpfnt->fallback_faces[i], &dpfnt->settings, fb))
                {
-                       if(!FS_FileExists(va("%s.tga", dpfnt->fallbacks[i])))
-                       if(!FS_FileExists(va("%s.png", dpfnt->fallbacks[i])))
-                       if(!FS_FileExists(va("%s.jpg", dpfnt->fallbacks[i])))
-                       if(!FS_FileExists(va("%s.pcx", dpfnt->fallbacks[i])))
-                               Con_Printf("Failed to load font %s for fallback %i of font %s\n", dpfnt->fallbacks[i], i, name);
+                       if(!FS_FileExists(va(vabuf, sizeof(vabuf), "%s.tga", dpfnt->fallbacks[i])))
+                       if(!FS_FileExists(va(vabuf, sizeof(vabuf), "%s.png", dpfnt->fallbacks[i])))
+                       if(!FS_FileExists(va(vabuf, sizeof(vabuf), "%s.jpg", dpfnt->fallbacks[i])))
+                       if(!FS_FileExists(va(vabuf, sizeof(vabuf), "%s.pcx", dpfnt->fallbacks[i])))
+                               Con_Printf(CON_ERROR "Failed to load font %s for fallback %i of font %s\n", dpfnt->fallbacks[i], i, name);
                        Mem_Free(fb);
                        continue;
                }
@@ -471,7 +586,7 @@ qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt)
                }
                if (!count)
                {
-                       Con_Printf("Failed to allocate font for fallback %i of font %s\n", i, name);
+                       Con_Printf(CON_ERROR "Failed to allocate font for fallback %i of font %s\n", i, name);
                        Font_UnloadFont(fb);
                        Mem_Free(fb);
                        break;
@@ -510,7 +625,7 @@ qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt)
        return true;
 }
 
-static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *settings, ft2_font_t *font)
+static qbool Font_LoadFile(const char *name, int _face, ft2_settings_t *settings, ft2_font_t *font)
 {
        size_t namelen;
        char filename[MAX_QPATH];
@@ -525,7 +640,7 @@ static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *setti
        {
                if (!r_font_disable_freetype.integer)
                {
-                       Con_Printf("WARNING: can't open load font %s\n"
+                       Con_Printf(CON_WARN "WARNING: can't open load font %s\n"
                                   "You need the FreeType2 DLL to load font files\n",
                                   name);
                }
@@ -535,6 +650,11 @@ static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *setti
        font->settings = settings;
 
        namelen = strlen(name);
+       if (namelen + 5 > sizeof(filename))
+       {
+               Con_Printf(CON_WARN "WARNING: too long font name. Cannot load this.\n");
+               return false;
+       }
 
        // try load direct file
        memcpy(filename, name, namelen+1);
@@ -578,14 +698,14 @@ static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *setti
        status = qFT_New_Memory_Face(font_ft2lib, (FT_Bytes)data, datasize, _face, (FT_Face*)&font->face);
        if (status && _face != 0)
        {
-               Con_Printf("Failed to load face %i of %s. Falling back to face 0\n", _face, name);
+               Con_Printf(CON_ERROR "Failed to load face %i of %s. Falling back to face 0\n", _face, name);
                _face = 0;
-               status = qFT_New_Memory_Face(font_ft2lib, (FT_Bytes)data, datasize, 0, (FT_Face*)&font->face);
+               status = qFT_New_Memory_Face(font_ft2lib, (FT_Bytes)data, datasize, _face, (FT_Face*)&font->face);
        }
        font->data = data;
        if (status)
        {
-               Con_Printf("ERROR: can't create face for %s\n"
+               Con_Printf(CON_ERROR "ERROR: can't create face for %s\n"
                           "Error %i\n", // TODO: error strings
                           name, status);
                Font_UnloadFont(font);
@@ -601,21 +721,21 @@ static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *setti
                args.memory_base = (const FT_Byte*)font->attachments[i].data;
                args.memory_size = font->attachments[i].size;
                if (qFT_Attach_Stream((FT_Face)font->face, &args))
-                       Con_Printf("Failed to add attachment %u to %s\n", (unsigned)i, font->name);
+                       Con_Printf(CON_ERROR "Failed to add attachment %u to %s\n", (unsigned)i, font->name);
        }
 
-       memcpy(font->name, name, namelen+1);
+       dp_strlcpy(font->name, name, sizeof(font->name));
        font->image_font = false;
        font->has_kerning = !!(((FT_Face)(font->face))->face_flags & FT_FACE_FLAG_KERNING);
        return true;
 }
 
-void Font_Postprocess_Update(ft2_font_t *fnt, int bpp, int w, int h)
+static void Font_Postprocess_Update(ft2_font_t *fnt, int bpp, int w, int h)
 {
        int needed, x, y;
        float gausstable[2*POSTPROCESS_MAXRADIUS+1];
-       qboolean need_gauss  = (!pp.buf || pp.blur != fnt->settings->blur || pp.shadowz != fnt->settings->shadowz);
-       qboolean need_circle = (!pp.buf || pp.outline != fnt->settings->outline || pp.shadowx != fnt->settings->shadowx || pp.shadowy != fnt->settings->shadowy);
+       qbool need_gauss  = (!pp.buf || pp.blur != fnt->settings->blur || pp.shadowz != fnt->settings->shadowz);
+       qbool need_circle = (!pp.buf || pp.outline != fnt->settings->outline || pp.shadowx != fnt->settings->shadowx || pp.shadowy != fnt->settings->shadowy);
        pp.blur = fnt->settings->blur;
        pp.outline = fnt->settings->outline;
        pp.shadowx = fnt->settings->shadowx;
@@ -664,7 +784,7 @@ void Font_Postprocess_Update(ft2_font_t *fnt, int bpp, int w, int h)
        }
 }
 
-void Font_Postprocess(ft2_font_t *fnt, unsigned char *imagedata, int pitch, int bpp, int w, int h, int *pad_l, int *pad_r, int *pad_t, int *pad_b)
+static void Font_Postprocess(ft2_font_t *fnt, unsigned char *imagedata, int pitch, int bpp, int w, int h, int *pad_l, int *pad_r, int *pad_t, int *pad_b)
 {
        int x, y;
 
@@ -787,8 +907,8 @@ void Font_Postprocess(ft2_font_t *fnt, unsigned char *imagedata, int pitch, int
 }
 
 static float Font_SearchSize(ft2_font_t *font, FT_Face fontface, float size);
-static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _ch, ft2_font_map_t **outmap);
-static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
+static qbool Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _ch, ft2_font_map_t **outmap, int *outmapch, qbool incmap_ok);
+static qbool Font_LoadSize(ft2_font_t *font, float size, qbool check_only)
 {
        int map_index;
        ft2_font_map_t *fmap, temp;
@@ -828,13 +948,15 @@ static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
 
        memset(&temp, 0, sizeof(temp));
        temp.size = size;
-       temp.glyphSize = CeilPowerOf2(size*2 + max(gpad_l + gpad_r, gpad_t + gpad_b));
+       temp.glyphSize = size*2 + max(gpad_l + gpad_r, gpad_t + gpad_b);
+       if (!r_font_nonpoweroftwo.integer)
+               temp.glyphSize = CeilPowerOf2(temp.glyphSize);
        temp.sfx = (1.0/64.0)/(double)size;
        temp.sfy = (1.0/64.0)/(double)size;
        temp.intSize = -1; // negative value: LoadMap must search now :)
-       if (!Font_LoadMap(font, &temp, 0, &fmap))
+       if (!Font_LoadMap(font, &temp, 0, &fmap, NULL, false))
        {
-               Con_Printf("ERROR: can't load the first character map for %s\n"
+               Con_Printf(CON_ERROR "ERROR: can't load the first character map for %s\n"
                           "This is fatal\n",
                           font->name);
                Font_UnloadFont(font);
@@ -850,6 +972,7 @@ static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
        {
                Uchar l, r;
                FT_Vector kernvec;
+               fmap->kerning = (ft2_kerning_t *)Mem_Alloc(font_mempool, sizeof(ft2_kerning_t));
                for (l = 0; l < 256; ++l)
                {
                        for (r = 0; r < 256; ++r)
@@ -859,13 +982,13 @@ static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
                                ur = qFT_Get_Char_Index((FT_Face)font->face, r);
                                if (qFT_Get_Kerning((FT_Face)font->face, ul, ur, FT_KERNING_DEFAULT, &kernvec))
                                {
-                                       fmap->kerning.kerning[l][r][0] = 0;
-                                       fmap->kerning.kerning[l][r][1] = 0;
+                                       fmap->kerning->kerning[l][r][0] = 0;
+                                       fmap->kerning->kerning[l][r][1] = 0;
                                }
                                else
                                {
-                                       fmap->kerning.kerning[l][r][0] = Font_SnapTo((kernvec.x / 64.0) / fmap->size, 1 / fmap->size);
-                                       fmap->kerning.kerning[l][r][1] = Font_SnapTo((kernvec.y / 64.0) / fmap->size, 1 / fmap->size);
+                                       fmap->kerning->kerning[l][r][0] = Font_SnapTo((kernvec.x / 64.0) / fmap->size, 1 / fmap->size);
+                                       fmap->kerning->kerning[l][r][1] = Font_SnapTo((kernvec.y / 64.0) / fmap->size, 1 / fmap->size);
                                }
                        }
                }
@@ -883,11 +1006,11 @@ int Font_IndexForSize(ft2_font_t *font, float _fsize, float *outw, float *outh)
        float fsize_x, fsize_y;
        ft2_font_map_t **maps = font->font_maps;
 
-       fsize_x = fsize_y = _fsize * vid.height / vid_conheight.value;
+       fsize_x = fsize_y = _fsize * vid.mode.height / vid_conheight.value;
        if(outw && *outw)
-               fsize_x = *outw * vid.width / vid_conwidth.value;
+               fsize_x = *outw * vid.mode.width / vid_conwidth.value;
        if(outh && *outh)
-               fsize_y = *outh * vid.height / vid_conheight.value;
+               fsize_y = *outh * vid.mode.height / vid_conheight.value;
 
        if (fsize_x < 0)
        {
@@ -920,8 +1043,8 @@ int Font_IndexForSize(ft2_font_t *font, float _fsize, float *outw, float *outh)
        if (value <= r_font_size_snapping.value)
        {
                // do NOT keep the aspect for perfect rendering
-               if (outh) *outh = maps[match]->size * vid_conheight.value / vid.height;
-               if (outw) *outw = maps[match]->size * vid_conwidth.value / vid.width;
+               if (outh) *outh = maps[match]->size * vid_conheight.value / vid.mode.height;
+               if (outw) *outw = maps[match]->size * vid_conwidth.value / vid.mode.width;
        }
        return match;
 }
@@ -933,7 +1056,7 @@ ft2_font_map_t *Font_MapForIndex(ft2_font_t *font, int index)
        return font->font_maps[index];
 }
 
-static qboolean Font_SetSize(ft2_font_t *font, float w, float h)
+static qbool Font_SetSize(ft2_font_t *font, float w, float h)
 {
        if (font->currenth == h &&
            ((!w && (!font->currentw || font->currentw == font->currenth)) || // check if w==h when w is not set
@@ -959,7 +1082,7 @@ static qboolean Font_SetSize(ft2_font_t *font, float w, float h)
        return true;
 }
 
-qboolean Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h, Uchar left, Uchar right, float *outx, float *outy)
+qbool Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h, Uchar left, Uchar right, float *outx, float *outy)
 {
        ft2_font_map_t *fmap;
        if (!font->has_kerning || !r_font_kerning.integer)
@@ -973,8 +1096,8 @@ qboolean Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h
        {
                //Con_Printf("%g : %f, %f, %f :: %f\n", (w / (float)fmap->size), w, fmap->size, fmap->intSize, Font_VirtualToRealSize(w));
                // quick-kerning, be aware of the size: scale it
-               if (outx) *outx = fmap->kerning.kerning[left][right][0];// * (w / (float)fmap->size);
-               if (outy) *outy = fmap->kerning.kerning[left][right][1];// * (h / (float)fmap->size);
+               if (outx) *outx = fmap->kerning->kerning[left][right][0];// * (w / (float)fmap->size);
+               if (outy) *outy = fmap->kerning->kerning[left][right][1];// * (h / (float)fmap->size);
                return true;
        }
        else
@@ -1002,7 +1125,7 @@ qboolean Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h
                if (!Font_SetSize(font, fmap->intSize, fmap->intSize))
                {
                        // this deserves an error message
-                       Con_Printf("Failed to get kerning for %s\n", font->name);
+                       Con_Printf(CON_ERROR "Failed to get kerning for %s\n", font->name);
                        return false;
                }
                ul = qFT_Get_Char_Index((FT_Face)font->face, left);
@@ -1017,21 +1140,45 @@ qboolean Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h
        }
 }
 
-qboolean Font_GetKerningForSize(ft2_font_t *font, float w, float h, Uchar left, Uchar right, float *outx, float *outy)
+qbool Font_GetKerningForSize(ft2_font_t *font, float w, float h, Uchar left, Uchar right, float *outx, float *outy)
 {
        return Font_GetKerningForMap(font, Font_IndexForSize(font, h, NULL, NULL), w, h, left, right, outx, outy);
 }
 
-static void UnloadMapRec(ft2_font_map_t *map)
+// this is used to gracefully unload a map chain; the passed map
+// needs not necessarily be a startmap, so maps ahead of it can be kept
+static void UnloadMapChain(ft2_font_map_t *map)
 {
-       if (map->pic)
+       int i;
+       ft2_font_map_t *nextmap;
+       // these may only be in a startmap
+       if (map->kerning != NULL)
+               Mem_Free(map->kerning);
+       if (map->incmap != NULL)
+       {
+               for (i = 0; i < FONT_CHARS_PER_LINE; ++i)
+                       if (map->incmap->data_tier1[i] != NULL)
+                               Mem_Free(map->incmap->data_tier1[i]);
+                       else
+                               break;
+               for (i = 0; i < FONT_CHAR_LINES; ++i)
+                       if (map->incmap->data_tier2[i] != NULL)
+                               Mem_Free(map->incmap->data_tier2[i]);
+                       else
+                               break;
+               Mem_Free(map->incmap);
+       }
+       while (map != NULL)
        {
-               //Draw_FreePic(map->pic); // FIXME: refcounting needed...
-               map->pic = NULL;
+               if (map->pic)
+               {
+                       //Draw_FreePic(map->pic); // FIXME: refcounting needed...
+                       map->pic = NULL;
+               }
+               nextmap = map->next;
+               Mem_Free(map);
+               map = nextmap;
        }
-       if (map->next)
-               UnloadMapRec(map->next);
-       Mem_Free(map);
 }
 
 void Font_UnloadFont(ft2_font_t *font)
@@ -1056,11 +1203,15 @@ void Font_UnloadFont(ft2_font_t *font)
        {
                if (font->font_maps[i])
                {
-                       UnloadMapRec(font->font_maps[i]);
+                       UnloadMapChain(font->font_maps[i]);
                        font->font_maps[i] = NULL;
                }
        }
+#ifndef DP_FREETYPE_STATIC
        if (ft2_dll)
+#else
+       if (!r_font_disable_freetype.integer)
+#endif
        {
                if (font->face)
                {
@@ -1081,46 +1232,193 @@ static float Font_SearchSize(ft2_font_t *font, FT_Face fontface, float size)
        {
                if (!Font_SetSize(font, intSize, intSize))
                {
-                       Con_Printf("ERROR: can't set size for font %s: %f ((%f))\n", font->name, size, intSize);
+                       Con_Printf(CON_ERROR "ERROR: can't set size for font %s: %f ((%f))\n", font->name, size, intSize);
                        return -1;
                }
                if ((fontface->size->metrics.height>>6) <= size)
                        return intSize;
                if (intSize < 2)
                {
-                       Con_Printf("ERROR: no appropriate size found for font %s: %f\n", font->name, size);
+                       Con_Printf(CON_ERROR "ERROR: no appropriate size found for font %s: %f\n", font->name, size);
                        return -1;
                }
                --intSize;
        }
 }
 
-static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _ch, ft2_font_map_t **outmap)
+// helper inline functions for incmap_post_process:
+
+static inline void update_pic_for_fontmap(ft2_font_map_t *fontmap, const char *identifier,
+               int width, int height, unsigned char *data)
+{
+       fontmap->pic = Draw_NewPic(identifier, width, height, data, TEXTYPE_RGBA,
+               TEXF_ALPHA | TEXF_CLAMP | (r_font_compress.integer > 0 ? TEXF_COMPRESS : 0));
+}
+
+// glyphs' texture coords needs to be fixed when merging to bigger texture
+static inline void transform_glyph_coords(glyph_slot_t *glyph, float shiftx, float shifty, float scalex, float scaley)
+{
+       glyph->txmin = glyph->txmin * scalex + shiftx;
+       glyph->txmax = glyph->txmax * scalex + shiftx;
+       glyph->tymin = glyph->tymin * scaley + shifty;
+       glyph->tymax = glyph->tymax * scaley + shifty;
+}
+#define fix_glyph_coords_tier1(glyph, order) transform_glyph_coords(glyph, order / (float)FONT_CHARS_PER_LINE, 0.0f, 1.0f / (float)FONT_CHARS_PER_LINE, 1.0f)
+#define fix_glyph_coords_tier2(glyph, order) transform_glyph_coords(glyph, 0.0f, order / (float)FONT_CHARS_PER_LINE, 1.0f, 1.0f / (float)FONT_CHARS_PER_LINE)
+
+// pull glyph things from sourcemap to targetmap
+static inline void merge_single_map(ft2_font_map_t *targetmap, int targetindex, ft2_font_map_t *sourcemap, int sourceindex)
+{
+       targetmap->glyphs[targetindex] = sourcemap->glyphs[sourceindex];
+       targetmap->glyphchars[targetindex] = sourcemap->glyphchars[sourceindex];
+}
+
+#define calc_data_arguments(w, h)                      \
+               width = startmap->glyphSize * w;        \
+               height = startmap->glyphSize * h;       \
+               pitch = width * bytes_per_pixel;        \
+               datasize = height * pitch;
+
+// do incremental map process
+static inline void incmap_post_process(font_incmap_t *incmap, Uchar ch,
+               unsigned char *data, ft2_font_map_t **outmap, int *outmapch)
+{
+       #define bytes_per_pixel 4
+
+       int index, targetmap_at;
+       // where will the next `data` be placed
+       int tier1_data_index, tier2_data_index;
+       // metrics of data to manipulate
+       int width, height, pitch, datasize;
+       int i, j, x, y;
+       unsigned char *newdata, *chunk;
+       ft2_font_map_t *startmap, *targetmap, *currentmap;
+       #define M FONT_CHARS_PER_LINE
+       #define N FONT_CHAR_LINES
+
+       startmap = incmap->fontmap;
+       index = incmap->charcount;
+       tier1_data_index = index % M;
+       tier2_data_index = incmap->tier1_merged;
+
+       incmap->data_tier1[tier1_data_index] = data;
+
+       if (index % M == M - 1)
+       {
+               // tier 1 reduction, pieces to line
+               calc_data_arguments(1, 1);
+               targetmap_at = incmap->tier2_merged + incmap->tier1_merged;
+               targetmap = startmap;
+               for (i = 0; i < targetmap_at; ++i)
+                       targetmap = targetmap->next;
+               currentmap = targetmap;
+               newdata = (unsigned char *)Mem_Alloc(font_mempool, datasize * M);
+               for (i = 0; i < M; ++i)
+               {
+                       chunk = incmap->data_tier1[i];
+                       if (chunk == NULL)
+                               continue;
+                       for (y = 0; y < datasize; y += pitch)
+                               for (x = 0; x < pitch; ++x)
+                                       newdata[y * M + i * pitch + x] = chunk[y + x];
+                       Mem_Free(chunk);
+                       incmap->data_tier1[i] = NULL;
+                       merge_single_map(targetmap, i, currentmap, 0);
+                       fix_glyph_coords_tier1(&targetmap->glyphs[i], (float)i);
+                       currentmap = currentmap->next;
+               }
+               update_pic_for_fontmap(targetmap, Draw_GetPicName(targetmap->pic), width * M, height, newdata);
+               UnloadMapChain(targetmap->next);
+               targetmap->next = NULL;
+               incmap->data_tier2[tier2_data_index] = newdata;
+               ++incmap->tier1_merged;
+               incmap->tier1_merged %= M;
+               incmap->newmap_start = INCMAP_START + targetmap_at + 1;
+               // then give this merged map
+               *outmap = targetmap;
+               *outmapch = FONT_CHARS_PER_LINE - 1;
+       }
+       if (index % (M * N) == M * N - 1)
+       {
+               // tier 2 reduction, lines to full map
+               calc_data_arguments(M, 1);
+               targetmap_at = incmap->tier2_merged;
+               targetmap = startmap;
+               for (i = 0; i < targetmap_at; ++i)
+                       targetmap = targetmap->next;
+               currentmap = targetmap;
+               newdata = (unsigned char *)Mem_Alloc(font_mempool, datasize * N);
+               for (i = 0; i < N; ++i)
+               {
+                       chunk = incmap->data_tier2[i];
+                       if (chunk == NULL)
+                               continue;
+                       for (x = 0; x < datasize; ++x)
+                               newdata[i * datasize + x] = chunk[x];
+                       Mem_Free(chunk);
+                       incmap->data_tier2[i] = NULL;
+                       for (j = 0; j < M; ++j)
+                       {
+                               merge_single_map(targetmap, i * M + j, currentmap, j);
+                               fix_glyph_coords_tier2(&targetmap->glyphs[i * M + j], (float)i);
+                       }
+                       currentmap = currentmap->next;
+               }
+               update_pic_for_fontmap(targetmap, Draw_GetPicName(targetmap->pic), width, height * N, newdata);
+               UnloadMapChain(targetmap->next);
+               targetmap->next = NULL;
+               Mem_Free(newdata);
+               ++incmap->tier2_merged;
+               incmap->newmap_start = INCMAP_START + targetmap_at + 1;
+               // then give this merged map
+               *outmap = targetmap;
+               *outmapch = FONT_CHARS_PER_MAP - 1;
+       }
+
+       ++incmap->charcount;
+       ++incmap->newmap_start;
+
+       #undef M
+       #undef N
+}
+
+static qbool Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _ch,
+               ft2_font_map_t **outmap, int *outmapch, qbool use_incmap)
 {
+       #define bytes_per_pixel 4
+
        char map_identifier[MAX_QPATH];
-       unsigned long mapidx = _ch / FONT_CHARS_PER_MAP;
+       unsigned long map_startglyph = _ch / FONT_CHARS_PER_MAP * FONT_CHARS_PER_MAP;
        unsigned char *data = NULL;
-       FT_ULong ch, mapch;
+       FT_ULong ch = 0, mapch = 0;
        int status;
        int tp;
        FT_Int32 load_flags;
        int gpad_l, gpad_r, gpad_t, gpad_b;
 
        int pitch;
-       int gR, gC; // glyph position: row and column
+       int width, height, datasize;
+       int glyph_row, glyph_column;
+
+       int chars_per_line = FONT_CHARS_PER_LINE;
+       int char_lines = FONT_CHAR_LINES;
+       int chars_per_map = FONT_CHARS_PER_MAP;
 
-       ft2_font_map_t *map, *next;
        ft2_font_t *usefont;
+       ft2_font_map_t *map, *next;
+       font_incmap_t *incmap;
 
        FT_Face fontface;
 
-       int bytesPerPixel = 4; // change the conversion loop too if you change this!
-
-       if (outmap)
-               *outmap = NULL;
-
-       if (r_font_use_alpha_textures.integer)
-               bytesPerPixel = 1;
+       incmap = mapstart->incmap;
+       if (use_incmap)
+       {
+               // only render one character in this map;
+               // such small maps will be merged together later in `incmap_post_process`
+               chars_per_line = char_lines = chars_per_map = 1;
+               // and the index is incremental
+               map_startglyph = incmap ? incmap->newmap_start : INCMAP_START;
+       }
 
        if (font->image_font)
                fontface = (FT_Face)font->next->face;
@@ -1198,20 +1496,23 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
 
        if (!font->image_font && !Font_SetSize(font, mapstart->intSize, mapstart->intSize))
        {
-               Con_Printf("ERROR: can't set sizes for font %s: %f\n", font->name, mapstart->size);
+               Con_Printf(CON_ERROR "ERROR: can't set sizes for font %s: %f\n", font->name, mapstart->size);
                return false;
        }
 
        map = (ft2_font_map_t *)Mem_Alloc(font_mempool, sizeof(ft2_font_map_t));
        if (!map)
        {
-               Con_Printf("ERROR: Out of memory when loading fontmap for %s\n", font->name);
+               Con_Printf(CON_ERROR "ERROR: Out of memory when allocating fontmap for %s\n", font->name);
                return false;
        }
 
-       // create a totally unique name for this map, then we will use it to make a unique cachepic_t to avoid redundant textures
+       map->start = map_startglyph;
+
+       // create a unique name for this map, then we will use it to make a unique cachepic_t to avoid redundant textures
+       /*
        dpsnprintf(map_identifier, sizeof(map_identifier),
-               "%s_cache_%g_%d_%g_%g_%g_%g_%g_%u",
+               "%s_cache_%g_%d_%g_%g_%g_%g_%g_%u_%lx",
                font->name,
                (double) mapstart->intSize,
                (int) load_flags,
@@ -1220,12 +1521,26 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                (double) font->settings->shadowx,
                (double) font->settings->shadowy,
                (double) font->settings->shadowz,
-               (unsigned) map->start/FONT_CHARS_PER_MAP);
+               (unsigned) map_startglyph,
+               // add pointer as a unique part to avoid earlier incmaps' state being trashed
+               use_incmap ? (unsigned long)mapstart : 0x0);
+       */
+       /*
+        * note 1: it appears that different font instances may have the same metrics, causing this pic being overwritten
+        *         will use startmap's pointer as a unique part to avoid earlier incmaps' dynamic pics being trashed
+        * note 2: if this identifier is made too long, significient performance drop will take place
+        * note 3: blur/outline/shadow are per-font settings, so a pointer to startmap & map size
+        *         already made these unique, hence they are omitted
+        * note 4: font_diskcache is removed, this name can be less meaningful
+        */
+       dpsnprintf(map_identifier, sizeof(map_identifier), "%s_%g_%p_%u",
+                       font->name, mapstart->intSize, mapstart, (unsigned) map_startglyph);
 
        // create a cachepic_t from the data now, or reuse an existing one
-       map->pic = Draw_CachePic_Flags(map_identifier, CACHEPICFLAG_QUIET);
+       if (developer_font.integer)
+               Con_Printf("Generating font map %s (size: %.1f MB)\n", map_identifier, mapstart->glyphSize * (256 * 4 / 1048576.0) * mapstart->glyphSize);
 
-       Font_Postprocess(font, NULL, 0, bytesPerPixel, mapstart->size*2, mapstart->size*2, &gpad_l, &gpad_r, &gpad_t, &gpad_b);
+       Font_Postprocess(font, NULL, 0, bytes_per_pixel, mapstart->size*2, mapstart->size*2, &gpad_l, &gpad_r, &gpad_t, &gpad_b);
 
        // copy over the information
        map->size = mapstart->size;
@@ -1234,45 +1549,70 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
        map->sfx = mapstart->sfx;
        map->sfy = mapstart->sfy;
 
-       pitch = map->glyphSize * FONT_CHARS_PER_LINE * bytesPerPixel;
-       if (map->pic->tex == r_texture_notexture)
+       width = map->glyphSize * chars_per_line;
+       height = map->glyphSize * char_lines;
+       pitch = width * bytes_per_pixel;
+       datasize = height * pitch;
+       data = (unsigned char *)Mem_Alloc(font_mempool, datasize);
+       if (!data)
        {
-               data = (unsigned char *)Mem_Alloc(font_mempool, (FONT_CHAR_LINES * map->glyphSize) * pitch);
-               if (!data)
-               {
-                       Con_Printf("ERROR: Failed to allocate memory for font %s size %g\n", font->name, map->size);
-                       Mem_Free(map);
-                       return false;
-               }
-               // initialize as white texture with zero alpha
-               tp = 0;
-               while (tp < (FONT_CHAR_LINES * map->glyphSize) * pitch)
+               Con_Printf(CON_ERROR "ERROR: Failed to allocate memory for font %s size %g\n", font->name, map->size);
+               Mem_Free(map);
+               return false;
+       }
+
+       if (use_incmap)
+       {
+               if (mapstart->incmap == NULL)
                {
-                       if (bytesPerPixel == 4)
+                       // initial incmap
+                       incmap = mapstart->incmap = (font_incmap_t *)Mem_Alloc(font_mempool, sizeof(font_incmap_t));
+                       if (!incmap)
                        {
-                               data[tp++] = 0xFF;
-                               data[tp++] = 0xFF;
-                               data[tp++] = 0xFF;
+                               Con_Printf(CON_ERROR "ERROR: Out of memory when allocating incremental fontmap for %s\n", font->name);
+                               return false;
                        }
-                       data[tp++] = 0x00;
+                       // this will be the startmap of incmap
+                       incmap->fontmap = map;
+                       incmap->newmap_start = INCMAP_START;
+               }
+               else
+               {
+                       // new maps for incmap shall always be the last one
+                       next = incmap->fontmap;
+                       while (next->next != NULL)
+                               next = next->next;
+                       next->next = map;
                }
        }
+       else
+       {
+               // insert this normal map
+               next = use_incmap ? incmap->fontmap : mapstart;
+               while(next->next && next->next->start < map->start)
+                       next = next->next;
+               map->next = next->next;
+               next->next = map;
+       }
 
-       memset(map->width_of, 0, sizeof(map->width_of));
-
-       // insert the map
-       map->start = mapidx * FONT_CHARS_PER_MAP;
-       next = mapstart;
-       while(next->next && next->next->start < map->start)
-               next = next->next;
-       map->next = next->next;
-       next->next = map;
+       // initialize as white texture with zero alpha
+       tp = 0;
+       while (tp < datasize)
+       {
+               if (bytes_per_pixel == 4)
+               {
+                       data[tp++] = 0xFF;
+                       data[tp++] = 0xFF;
+                       data[tp++] = 0xFF;
+               }
+               data[tp++] = 0x00;
+       }
 
-       gR = 0;
-       gC = -1;
-       for (ch = map->start;
-            ch < (FT_ULong)map->start + FONT_CHARS_PER_MAP;
-            ++ch)
+       glyph_row = 0;
+       glyph_column = 0;
+       ch = (FT_ULong)(use_incmap ? _ch : map->start);
+       mapch = 0;
+       while (true)
        {
                FT_ULong glyphIndex;
                int w, h, x, y;
@@ -1283,22 +1623,15 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                FT_Face face;
                int pad_l, pad_r, pad_t, pad_b;
 
-               mapch = ch - map->start;
-
                if (developer_font.integer)
                        Con_DPrint("glyphinfo: ------------- GLYPH INFO -----------------\n");
 
-               ++gC;
-               if (gC >= FONT_CHARS_PER_LINE)
-               {
-                       gC -= FONT_CHARS_PER_LINE;
-                       ++gR;
-               }
+               map->glyphchars[mapch] = (Uchar)ch;
 
                if (data)
                {
-                       imagedata = data + gR * pitch * map->glyphSize + gC * map->glyphSize * bytesPerPixel;
-                       imagedata += gpad_t * pitch + gpad_l * bytesPerPixel;
+                       imagedata = data + glyph_row * pitch * map->glyphSize + glyph_column * map->glyphSize * bytes_per_pixel;
+                       imagedata += gpad_t * pitch + gpad_l * bytes_per_pixel;
                }
                //status = qFT_Load_Char(face, ch, FT_LOAD_RENDER);
                // we need the glyphIndex
@@ -1357,7 +1690,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                h = bmp->rows;
 
                if (w > (map->glyphSize - gpad_l - gpad_r) || h > (map->glyphSize - gpad_t - gpad_b)) {
-                       Con_Printf("WARNING: Glyph %lu is too big in font %s, size %g: %i x %i\n", ch, font->name, map->size, w, h);
+                       Con_Printf(CON_WARN "WARNING: Glyph %lu is too big in font %s, size %g: %i x %i\n", ch, font->name, map->size, w, h);
                        if (w > map->glyphSize)
                                w = map->glyphSize - gpad_l - gpad_r;
                        if (h > map->glyphSize)
@@ -1388,7 +1721,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                                if (developer_font.integer)
                                        Con_DPrintf("glyphinfo:   Pixel Mode: Unknown: %i\n", bmp->pixel_mode);
                                Mem_Free(data);
-                               Con_Printf("ERROR: Unrecognized pixel mode for font %s size %f: %i\n", font->name, mapstart->size, bmp->pixel_mode);
+                               Con_Printf(CON_ERROR "ERROR: Unrecognized pixel mode for font %s size %f: %i\n", font->name, mapstart->size, bmp->pixel_mode);
                                return false;
                        }
                        for (y = 0; y < h; ++y)
@@ -1399,44 +1732,44 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                                switch (bmp->pixel_mode)
                                {
                                case FT_PIXEL_MODE_MONO:
-                                       dst += bytesPerPixel - 1; // shift to alpha byte
+                                       dst += bytes_per_pixel - 1; // shift to alpha byte
                                        for (x = 0; x < bmp->width; x += 8)
                                        {
-                                               unsigned char ch = *src++;
-                                               *dst = 255 * !!((ch & 0x80) >> 7); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x40) >> 6); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x20) >> 5); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x10) >> 4); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x08) >> 3); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x04) >> 2); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x02) >> 1); dst += bytesPerPixel;
-                                               *dst = 255 * !!((ch & 0x01) >> 0); dst += bytesPerPixel;
+                                               unsigned char c = *src++;
+                                               *dst = 255 * !!((c & 0x80) >> 7); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x40) >> 6); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x20) >> 5); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x10) >> 4); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x08) >> 3); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x04) >> 2); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x02) >> 1); dst += bytes_per_pixel;
+                                               *dst = 255 * !!((c & 0x01) >> 0); dst += bytes_per_pixel;
                                        }
                                        break;
                                case FT_PIXEL_MODE_GRAY2:
-                                       dst += bytesPerPixel - 1; // shift to alpha byte
+                                       dst += bytes_per_pixel - 1; // shift to alpha byte
                                        for (x = 0; x < bmp->width; x += 4)
                                        {
-                                               unsigned char ch = *src++;
-                                               *dst = ( ((ch & 0xA0) >> 6) * 0x55 ); ch <<= 2; dst += bytesPerPixel;
-                                               *dst = ( ((ch & 0xA0) >> 6) * 0x55 ); ch <<= 2; dst += bytesPerPixel;
-                                               *dst = ( ((ch & 0xA0) >> 6) * 0x55 ); ch <<= 2; dst += bytesPerPixel;
-                                               *dst = ( ((ch & 0xA0) >> 6) * 0x55 ); ch <<= 2; dst += bytesPerPixel;
+                                               unsigned char c = *src++;
+                                               *dst = ( ((c & 0xA0) >> 6) * 0x55 ); c <<= 2; dst += bytes_per_pixel;
+                                               *dst = ( ((c & 0xA0) >> 6) * 0x55 ); c <<= 2; dst += bytes_per_pixel;
+                                               *dst = ( ((c & 0xA0) >> 6) * 0x55 ); c <<= 2; dst += bytes_per_pixel;
+                                               *dst = ( ((c & 0xA0) >> 6) * 0x55 ); c <<= 2; dst += bytes_per_pixel;
                                        }
                                        break;
                                case FT_PIXEL_MODE_GRAY4:
-                                       dst += bytesPerPixel - 1; // shift to alpha byte
+                                       dst += bytes_per_pixel - 1; // shift to alpha byte
                                        for (x = 0; x < bmp->width; x += 2)
                                        {
-                                               unsigned char ch = *src++;
-                                               *dst = ( ((ch & 0xF0) >> 4) * 0x11); dst += bytesPerPixel;
-                                               *dst = ( ((ch & 0x0F) ) * 0x11); dst += bytesPerPixel;
+                                               unsigned char c = *src++;
+                                               *dst = ( ((c & 0xF0) >> 4) * 0x11); dst += bytes_per_pixel;
+                                               *dst = ( ((c & 0x0F) ) * 0x11); dst += bytes_per_pixel;
                                        }
                                        break;
                                case FT_PIXEL_MODE_GRAY:
                                        // in this case pitch should equal width
                                        for (tp = 0; tp < bmp->pitch; ++tp)
-                                               dst[(bytesPerPixel - 1) + tp*bytesPerPixel] = src[tp]; // copy the grey value into the alpha bytes
+                                               dst[(bytes_per_pixel - 1) + tp*bytes_per_pixel] = src[tp]; // copy the grey value into the alpha bytes
 
                                        //memcpy((void*)dst, (void*)src, bmp->pitch);
                                        //dst += bmp->pitch;
@@ -1450,7 +1783,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        pad_r = gpad_r;
                        pad_t = gpad_t;
                        pad_b = gpad_b;
-                       Font_Postprocess(font, imagedata, pitch, bytesPerPixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
+                       Font_Postprocess(font, imagedata, pitch, bytes_per_pixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
                }
                else
                {
@@ -1458,7 +1791,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        pad_r = gpad_r;
                        pad_t = gpad_t;
                        pad_b = gpad_b;
-                       Font_Postprocess(font, NULL, pitch, bytesPerPixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
+                       Font_Postprocess(font, NULL, pitch, bytes_per_pixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
                }
 
 
@@ -1475,10 +1808,10 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        //double mWidth = (glyph->metrics.width >> 6) / map->size;
                        //double mHeight = (glyph->metrics.height >> 6) / map->size;
 
-                       mapglyph->txmin = ( (double)(gC * map->glyphSize) + (double)(gpad_l - pad_l) ) / ( (double)(map->glyphSize * FONT_CHARS_PER_LINE) );
-                       mapglyph->txmax = mapglyph->txmin + (double)(bmp->width + pad_l + pad_r) / ( (double)(map->glyphSize * FONT_CHARS_PER_LINE) );
-                       mapglyph->tymin = ( (double)(gR * map->glyphSize) + (double)(gpad_r - pad_r) ) / ( (double)(map->glyphSize * FONT_CHAR_LINES) );
-                       mapglyph->tymax = mapglyph->tymin + (double)(bmp->rows + pad_t + pad_b) / ( (double)(map->glyphSize * FONT_CHAR_LINES) );
+                       mapglyph->txmin = ( (double)(glyph_column * map->glyphSize) + (double)(gpad_l - pad_l) ) / ( (double)(map->glyphSize * chars_per_line) );
+                       mapglyph->txmax = mapglyph->txmin + (double)(bmp->width + pad_l + pad_r) / ( (double)(map->glyphSize * chars_per_line) );
+                       mapglyph->tymin = ( (double)(glyph_row * map->glyphSize) + (double)(gpad_r - pad_r) ) / ( (double)(map->glyphSize * char_lines) );
+                       mapglyph->tymax = mapglyph->tymin + (double)(bmp->rows + pad_t + pad_b) / ( (double)(map->glyphSize * char_lines) );
                        //mapglyph->vxmin = bearingX;
                        //mapglyph->vxmax = bearingX + mWidth;
                        mapglyph->vxmin = (glyph->bitmap_left - pad_l) / map->size;
@@ -1495,7 +1828,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
 
                        if (developer_font.integer)
                        {
-                               Con_DPrintf("glyphinfo:   Glyph: %lu   at (%i, %i)\n", (unsigned long)ch, gC, gR);
+                               Con_DPrintf("glyphinfo:   Glyph: %lu   at (%i, %i)\n", (unsigned long)ch, glyph_column, glyph_row);
                                Con_DPrintf("glyphinfo:   %f, %f, %lu\n", bearingX, map->sfx, (unsigned long)glyph->metrics.horiBearingX);
                                if (ch >= 32 && ch <= 128)
                                        Con_DPrintf("glyphinfo:   Character: %c\n", (int)ch);
@@ -1509,70 +1842,171 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        }
                }
                map->glyphs[mapch].image = false;
-       }
-
-       if (map->pic->tex == r_texture_notexture)
-       {
-               int w = map->glyphSize * FONT_CHARS_PER_LINE;
-               int h = map->glyphSize * FONT_CHAR_LINES;
-               rtexture_t *tex;
-               // abuse the Draw_CachePic system to keep track of this texture
-               tex = R_LoadTexture2D(drawtexturepool, map_identifier, w, h, data, r_font_use_alpha_textures.integer ? TEXTYPE_ALPHA : TEXTYPE_RGBA, TEXF_ALPHA | (r_font_compress.integer > 0 ? TEXF_COMPRESS : 0), -1, NULL);
-               // if tex is NULL for any reason, the pic->tex will remain set to r_texture_notexture
-               if (tex)
-                       map->pic->tex = tex;
 
-               if (r_font_diskcache.integer >= 1)
+               ++mapch; ++ch;
+               if ((int)mapch == chars_per_map)
+                       break;
+               if (++glyph_column % chars_per_line == 0)
                {
-                       // swap to BGRA for tga writing...
-                       int s = w * h;
-                       int x;
-                       int b;
-                       for (x = 0;x < s;x++)
-                       {
-                               b = data[x*4+0];
-                               data[x*4+0] = data[x*4+2];
-                               data[x*4+2] = b;
-                       }
-                       Image_WriteTGABGRA(va("%s.tga", map_identifier), w, h, data);
-                       if (r_font_compress.integer && qglGetCompressedTexImageARB && tex)
-                               R_SaveTextureDDSFile(tex, va("dds/%s.dds", map_identifier), r_texture_dds_save.integer < 2, true);
+                       glyph_column = 0;
+                       ++glyph_row;
                }
        }
 
-       if(data)
-               Mem_Free(data);
+       // update the pic returned by Draw_CachePic_Flags earlier to contain our texture
+       update_pic_for_fontmap(map, map_identifier, width, height, data);
 
-       if (map->pic->tex == r_texture_notexture)
+       if (!Draw_IsPicLoaded(map->pic))
        {
                // if the first try isn't successful, keep it with a broken texture
                // otherwise we retry to load it every single frame where ft2 rendering is used
                // this would be bad...
                // only `data' must be freed
-               Con_Printf("ERROR: Failed to generate texture for font %s size %f map %lu\n",
-                          font->name, mapstart->size, mapidx);
+               Con_Printf(CON_ERROR "ERROR: Failed to generate texture for font %s size %f map %lu\n",
+                          font->name, mapstart->size, map_startglyph);
                return false;
        }
-       if (outmap)
+
+       if (use_incmap)
+       {
+               *outmap = map;
+               *outmapch = 0;
+               // data will be kept in incmap for being merged later, freed afterward
+               incmap_post_process(incmap, _ch, data, outmap, outmapch);
+       }
+       else if (data)
+       {
+               Mem_Free(data);
                *outmap = map;
+               if (outmapch != NULL)
+                       *outmapch = _ch - map->start;
+       }
+
        return true;
 }
 
-qboolean Font_LoadMapForIndex(ft2_font_t *font, int map_index, Uchar _ch, ft2_font_map_t **outmap)
+static qbool legacy_font_loading_api_alerted = false;
+static inline void alert_legacy_font_api(const char *name)
+{
+       if (!legacy_font_loading_api_alerted)
+       {
+               Con_DPrintf(CON_WARN "Warning: You are using an legacy API '%s', which have certain limitations; please use 'Font_GetMapForChar' instead\n", name);
+               legacy_font_loading_api_alerted = true;
+       }
+}
+
+// legacy font API, please use `Font_GetMapForChar` instead
+qbool Font_LoadMapForIndex(ft2_font_t *font, int map_index, Uchar ch, ft2_font_map_t **outmap)
 {
        if (map_index < 0 || map_index >= MAX_FONT_SIZES)
                return false;
        // the first map must have been loaded already
        if (!font->font_maps[map_index])
                return false;
-       return Font_LoadMap(font, font->font_maps[map_index], _ch, outmap);
+       alert_legacy_font_api("Font_LoadMapForIndex");
+       return Font_LoadMap(font, font->font_maps[map_index], ch, outmap, NULL, false);
 }
 
+// legacy font API. please use `Font_GetMapForChar` instead
 ft2_font_map_t *FontMap_FindForChar(ft2_font_map_t *start, Uchar ch)
 {
-       while (start && start->start + FONT_CHARS_PER_MAP <= ch)
-               start = start->next;
-       if (start && start->start > ch)
+       ft2_font_map_t *map = start;
+       while (map && map->start + FONT_CHARS_PER_MAP <= ch)
+               map = map->next;
+       if (map && map->start > ch)
                return NULL;
-       return start;
+       alert_legacy_font_api("FontMap_FindForChar");
+       return map;
+}
+
+static inline qbool should_use_incmap(Uchar ch)
+{
+       int i;
+       // optimize: a simple check logic for usual conditions
+       if (ch < unicode_bigblocks[0])
+               return false;
+       if (r_font_disable_incmaps.integer == 1)
+               return false;
+       for (i = 0; i < (int)(sizeof(unicode_bigblocks) / sizeof(Uchar)); i += 2)
+               if (unicode_bigblocks[i] <= ch && ch <= unicode_bigblocks[i + 1])
+                       return true;
+       return false;
+}
+
+static inline qbool get_char_from_incmap(ft2_font_map_t *map, Uchar ch, ft2_font_map_t **outmap, int *outmapch)
+{
+       int i;
+       font_incmap_t *incmap;
+
+       incmap = map->incmap;
+       *outmapch = 0;
+
+       if (incmap != NULL)
+       {
+               map = incmap->fontmap;
+               while (map != NULL)
+               {
+                       for (i = 0; i < FONT_CHARS_PER_MAP; ++i)
+                       {
+                               if (map->glyphchars[i] == ch)
+                               {
+                                       *outmap = map;
+                                       *outmapch = i;
+                                       return true;
+                               }
+                               else if (map->glyphchars[i] == 0)
+                                       // this tier0/tier1 map ends here
+                                       break;
+                       }
+                       map = map->next;
+               }
+       }
+       return false;
+}
+
+/**
+ * Query for or load a font map for a character, with the character's place on it.
+ * Supports the incremental map mechanism; returning if the operation is done successfully
+ */
+qbool Font_GetMapForChar(ft2_font_t *font, int map_index, Uchar ch, ft2_font_map_t **outmap, int *outmapch)
+{
+       qbool use_incmap;
+       ft2_font_map_t *map;
+
+       // startmap
+       map = Font_MapForIndex(font, map_index);
+
+       // optimize: the first map must have been loaded already
+       if (ch < FONT_CHARS_PER_MAP)
+       {
+               *outmapch = ch;
+               *outmap = map;
+               return true;
+       }
+
+       // search for the character
+
+       use_incmap = should_use_incmap(ch);
+
+       if (!use_incmap)
+       {
+               // normal way
+               *outmapch = ch % FONT_CHARS_PER_MAP;
+               while (map && map->start + FONT_CHARS_PER_MAP <= ch)
+                       map = map->next;
+               if (map && map->start <= ch)
+               {
+                       *outmap = map;
+                       return true;
+               }
+       }
+       else if (get_char_from_incmap(map, ch, outmap, outmapch))
+               // got it
+               return true;
+
+       // so no appropriate map was found, load one
+
+       if (map_index < 0 || map_index >= MAX_FONT_SIZES)
+               return false;
+       return Font_LoadMap(font, font->font_maps[map_index], ch, outmap, outmapch, use_incmap);
 }