]> 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 f96322ca63290a52a33f5329d125225fba7433f6..c7fe3ace1f46896eb31a9b0c0c6025514b8405b6 100644 (file)
--- a/ft2.c
+++ b/ft2.c
@@ -6,6 +6,7 @@
 #include "ft2.h"
 #include "ft2_defs.h"
 #include "ft2_fontdefs.h"
+#include "image.h"
 
 static int img_fontmap[256] = {
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@@ -26,17 +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 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
 
 /*
 ================================================================================
@@ -132,9 +158,87 @@ 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;
-static rtexturepool_t *font_texturepool = NULL;
 
 /// FreeType library handle
 static FT_Library font_ft2lib = NULL;
@@ -152,6 +256,79 @@ typedef struct
 font_postprocess_t;
 static font_postprocess_t pp;
 
+typedef struct fontfilecache_s
+{
+       unsigned char *buf;
+       fs_offset_t len;
+       int refcount;
+       char path[MAX_QPATH];
+}
+fontfilecache_t;
+#define MAX_FONTFILES 8
+static fontfilecache_t fontfiles[MAX_FONTFILES];
+static const unsigned char *fontfilecache_LoadFile(const char *path, qbool quiet, fs_offset_t *filesizepointer)
+{
+       int i;
+       unsigned char *buf;
+
+       for(i = 0; i < MAX_FONTFILES; ++i)
+       {
+               if(fontfiles[i].refcount > 0)
+                       if(!strcmp(path, fontfiles[i].path))
+                       {
+                               *filesizepointer = fontfiles[i].len;
+                               ++fontfiles[i].refcount;
+                               return fontfiles[i].buf;
+                       }
+       }
+
+       buf = FS_LoadFile(path, font_mempool, quiet, filesizepointer);
+       if(buf)
+       {
+               for(i = 0; i < MAX_FONTFILES; ++i)
+                       if(fontfiles[i].refcount <= 0)
+                       {
+                               dp_strlcpy(fontfiles[i].path, path, sizeof(fontfiles[i].path));
+                               fontfiles[i].len = *filesizepointer;
+                               fontfiles[i].buf = buf;
+                               fontfiles[i].refcount = 1;
+                               return buf;
+                       }
+       }
+
+       return buf;
+}
+static void fontfilecache_Free(const unsigned char *buf)
+{
+       int i;
+       for(i = 0; i < MAX_FONTFILES; ++i)
+       {
+               if(fontfiles[i].refcount > 0)
+                       if(fontfiles[i].buf == buf)
+                       {
+                               if(--fontfiles[i].refcount <= 0)
+                               {
+                                       Mem_Free(fontfiles[i].buf);
+                                       fontfiles[i].buf = NULL;
+                               }
+                               return;
+                       }
+       }
+       // if we get here, it used regular allocation
+       Mem_Free((void *) buf);
+}
+static void fontfilecache_FreeAll(void)
+{
+       int i;
+       for(i = 0; i < MAX_FONTFILES; ++i)
+       {
+               if(fontfiles[i].refcount > 0)
+                       Mem_Free(fontfiles[i].buf);
+               fontfiles[i].buf = NULL;
+               fontfiles[i].refcount = 0;
+       }
+}
+
 /*
 ====================
 Font_CloseLibrary
@@ -161,16 +338,17 @@ Unload the FreeType2 DLL
 */
 void Font_CloseLibrary (void)
 {
+       fontfilecache_FreeAll();
        if (font_mempool)
                Mem_FreePool(&font_mempool);
-       if (font_texturepool)
-               R_FreeTexturePool(&font_texturepool);
        if (font_ft2lib && qFT_Done_FreeType)
        {
                qFT_Done_FreeType(font_ft2lib);
                font_ft2lib = NULL;
        }
-       Sys_UnloadLibrary (&ft2_dll);
+#ifndef DP_FREETYPE_STATIC
+       Sys_FreeLibrary (&ft2_dll);
+#endif
        pp.buf = NULL;
 }
 
@@ -181,13 +359,14 @@ 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)
-               "freetype6.dll",
                "libfreetype-6.dll",
+               "freetype6.dll",
 #elif defined(MACOSX)
                "libfreetype.6.dylib",
                "libfreetype.dylib",
@@ -197,17 +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;
 }
 
@@ -226,7 +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;
        }
@@ -234,15 +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");
-               Font_CloseLibrary();
-               return;
-       }
-
-       font_texturepool = R_AllocTexturePool();
-       if (!font_texturepool)
-       {
-               Con_Print("ERROR: Failed to allocate FONT texture pool!\n");
+               Con_Print(CON_ERROR "ERROR: Failed to allocate FONT memory pool!\n");
                Font_CloseLibrary();
                return;
        }
@@ -251,12 +425,12 @@ void font_start(void)
 void font_shutdown(void)
 {
        int i;
-       for (i = 0; i < MAX_FONTS; ++i)
+       for (i = 0; i < dp_fonts.maxsize; ++i)
        {
-               if (dp_fonts[i].ft2)
+               if (dp_fonts.f[i].ft2)
                {
-                       Font_UnloadFont(dp_fonts[i].ft2);
-                       dp_fonts[i].ft2 = NULL;
+                       Font_UnloadFont(dp_fonts.f[i].ft2);
+                       dp_fonts.f[i].ft2 = NULL;
                }
        }
        Font_CloseLibrary();
@@ -268,11 +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();
 }
@@ -287,12 +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 Mem_Alloc(font_mempool, sizeof(ft2_font_t));
+       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;
 
@@ -312,12 +495,14 @@ qboolean Font_Attach(ft2_font_t *font, ft2_attachment_t *attachment)
 
 float Font_VirtualToRealSize(float sz)
 {
-       int vh, vw, si;
+       int vh;
+       //int vw;
+       int si;
        float sn;
        if(sz < 0)
                return sz;
-       vw = ((vid.width > 0) ? vid.width : vid_width.value);
-       vh = ((vid.height > 0) ? vid.height : vid_height.value);
+       //vw = ((vid.width > 0) ? vid.width : vid_width.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;
@@ -331,12 +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)
@@ -361,7 +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;
        }
@@ -378,15 +564,19 @@ 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))
                {
-                       Con_Printf("Failed to allocate font for fallback %i of font %s\n", 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);
-                       break;
+                       continue;
                }
                count = 0;
                for (s = 0; s < MAX_FONT_SIZES && dpfnt->req_sizes[s] >= 0; ++s)
@@ -396,7 +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;
@@ -435,13 +625,13 @@ 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];
        int status;
        size_t i;
-       unsigned char *data;
+       const unsigned char *data;
        fs_offset_t datasize;
 
        memset(font, 0, sizeof(*font));
@@ -450,7 +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);
                }
@@ -460,49 +650,62 @@ 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;
+       }
 
-       memcpy(filename, name, namelen);
-       memcpy(filename + namelen, ".ttf", 5);
-       data = FS_LoadFile(filename, font_mempool, false, &datasize);
+       // try load direct file
+       memcpy(filename, name, namelen+1);
+       data = fontfilecache_LoadFile(filename, false, &datasize);
+       // try load .ttf
+       if (!data)
+       {
+               memcpy(filename + namelen, ".ttf", 5);
+               data = fontfilecache_LoadFile(filename, false, &datasize);
+       }
+       // try load .otf
        if (!data)
        {
                memcpy(filename + namelen, ".otf", 5);
-               data = FS_LoadFile(filename, font_mempool, false, &datasize);
+               data = fontfilecache_LoadFile(filename, false, &datasize);
        }
+       // try load .pfb/afm
        if (!data)
        {
                ft2_attachment_t afm;
 
                memcpy(filename + namelen, ".pfb", 5);
-               data = FS_LoadFile(filename, font_mempool, false, &datasize);
+               data = fontfilecache_LoadFile(filename, false, &datasize);
 
                if (data)
                {
                        memcpy(filename + namelen, ".afm", 5);
-                       afm.data = FS_LoadFile(filename, font_mempool, false, &afm.size);
+                       afm.data = fontfilecache_LoadFile(filename, false, &afm.size);
 
                        if (afm.data)
                                Font_Attach(font, &afm);
                }
        }
-
        if (!data)
        {
                // FS_LoadFile being not-quiet should print an error :)
                return false;
        }
-       Con_Printf("Loading font %s face %i...\n", filename, _face);
+       Con_DPrintf("Loading font %s face %i...\n", filename, _face);
 
        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);
@@ -517,25 +720,22 @@ static qboolean Font_LoadFile(const char *name, int _face, ft2_settings_t *setti
                args.flags = FT_OPEN_MEMORY;
                args.memory_base = (const FT_Byte*)font->attachments[i].data;
                args.memory_size = font->attachments[i].size;
-               if (qFT_Attach_Stream(font->face, &args))
-                       Con_Printf("Failed to add attachment %u to %s\n", (unsigned)i, font->name);
+               if (qFT_Attach_Stream((FT_Face)font->face, &args))
+                       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)
 {
-       qboolean need_gauss = false, need_circle = false;
        int needed, x, y;
        float gausstable[2*POSTPROCESS_MAXRADIUS+1];
-       if(!pp.buf || pp.blur != fnt->settings->blur || pp.shadowz != fnt->settings->shadowz)
-               need_gauss = true;
-       if(!pp.buf || pp.outline != fnt->settings->outline || pp.shadowx != fnt->settings->shadowx || pp.shadowy != fnt->settings->shadowy)
-               need_circle = true;
+       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;
@@ -579,19 +779,21 @@ void Font_Postprocess_Update(ft2_font_t *fnt, int bpp, int w, int h)
                if(pp.buf)
                        Mem_Free(pp.buf);
                pp.bufsize = needed * 4;
-               pp.buf = Mem_Alloc(font_mempool, pp.bufsize);
+               pp.buf = (unsigned char *)Mem_Alloc(font_mempool, pp.bufsize);
                pp.buf2 = pp.buf + needed;
        }
 }
 
-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;
+
+       // calculate gauss table
        Font_Postprocess_Update(fnt, bpp, w, h);
+
        if(imagedata)
        {
                // enlarge buffer
-
                // perform operation, not exceeding the passed padding values,
                // but possibly reducing them
                *pad_l = min(*pad_l, pp.padding_l);
@@ -599,8 +801,6 @@ void Font_Postprocess(ft2_font_t *fnt, unsigned char *imagedata, int pitch, int
                *pad_t = min(*pad_t, pp.padding_t);
                *pad_b = min(*pad_b, pp.padding_b);
 
-               // calculate gauss table
-               
                // outline the font (RGBA only)
                if(bpp == 4 && (pp.outline > 0 || pp.blur > 0 || pp.shadowx != 0 || pp.shadowy != 0 || pp.shadowz != 0)) // we can only do this in BGRA
                {
@@ -687,6 +887,15 @@ void Font_Postprocess(ft2_font_t *fnt, unsigned char *imagedata, int pitch, int
                                }
                }
        }
+       else if(pitch)
+       {
+               // perform operation, not exceeding the passed padding values,
+               // but possibly reducing them
+               *pad_l = min(*pad_l, pp.padding_l);
+               *pad_r = min(*pad_r, pp.padding_r);
+               *pad_t = min(*pad_t, pp.padding_t);
+               *pad_b = min(*pad_b, pp.padding_b);
+       }
        else
        {
                // just calculate parameters
@@ -698,8 +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;
@@ -739,13 +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);
@@ -761,22 +972,23 @@ 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)
                        {
                                FT_ULong ul, ur;
-                               ul = qFT_Get_Char_Index(font->face, l);
-                               ur = qFT_Get_Char_Index(font->face, r);
-                               if (qFT_Get_Kerning(font->face, ul, ur, FT_KERNING_DEFAULT, &kernvec))
+                               ul = qFT_Get_Char_Index((FT_Face)font->face, l);
+                               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);
                                }
                        }
                }
@@ -787,18 +999,18 @@ static qboolean Font_LoadSize(ft2_font_t *font, float size, qboolean check_only)
 int Font_IndexForSize(ft2_font_t *font, float _fsize, float *outw, float *outh)
 {
        int match = -1;
-       int value = 1000000;
-       int nval;
+       float value = 1000000;
+       float nval;
        int matchsize = -10000;
        int m;
        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)
        {
@@ -818,7 +1030,7 @@ int Font_IndexForSize(ft2_font_t *font, float _fsize, float *outw, float *outh)
                if (!maps[m])
                        continue;
                // "round up" to the bigger size if two equally-valued matches exist
-               nval = 0.5 * (abs(maps[m]->size - fsize_x) + abs(maps[m]->size - fsize_y));
+               nval = 0.5 * (fabs(maps[m]->size - fsize_x) + fabs(maps[m]->size - fsize_y));
                if (match == -1 || nval < value || (nval == value && matchsize < maps[m]->size))
                {
                        value = nval;
@@ -831,8 +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;
 }
@@ -844,7 +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
@@ -870,7 +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)
@@ -884,8 +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
@@ -913,12 +1125,12 @@ 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(font->face, left);
-               ur = qFT_Get_Char_Index(font->face, right);
-               if (qFT_Get_Kerning(font->face, ul, ur, FT_KERNING_DEFAULT, &kernvec))
+               ul = qFT_Get_Char_Index((FT_Face)font->face, left);
+               ur = qFT_Get_Char_Index((FT_Face)font->face, right);
+               if (qFT_Get_Kerning((FT_Face)font->face, ul, ur, FT_KERNING_DEFAULT, &kernvec))
                {
                        if (outx) *outx = Font_SnapTo(kernvec.x * fmap->sfx, 1 / fmap->size);// * (w / (float)fmap->size);
                        if (outy) *outy = Font_SnapTo(kernvec.y * fmap->sfy, 1 / fmap->size);// * (h / (float)fmap->size);
@@ -928,28 +1140,61 @@ 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->texture)
+       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)
        {
-               R_FreeTexture(map->texture);
-               map->texture = 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)
+       {
+               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)
 {
        int i;
+
+       // unload fallbacks
+       if(font->next)
+               Font_UnloadFont(font->next);
+
        if (font->attachments && font->attachmentcount)
        {
+               for (i = 0; i < (int)font->attachmentcount; ++i) {
+                       if (font->attachments[i].data)
+                               fontfilecache_Free(font->attachments[i].data);
+               }
                Mem_Free(font->attachments);
                font->attachmentcount = 0;
                font->attachments = NULL;
@@ -958,11 +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)
                {
@@ -970,6 +1219,10 @@ void Font_UnloadFont(ft2_font_t *font)
                        font->face = NULL;
                }
        }
+       if (font->data) {
+           fontfilecache_Free(font->data);
+           font->data = NULL;
+       }
 }
 
 static float Font_SearchSize(ft2_font_t *font, FT_Face fontface, float size)
@@ -979,46 +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 char *data;
-       FT_ULong ch, mapch;
+       unsigned long map_startglyph = _ch / FONT_CHARS_PER_MAP * FONT_CHARS_PER_MAP;
+       unsigned char *data = NULL;
+       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;
@@ -1096,18 +1496,51 @@ 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 = Mem_Alloc(font_mempool, sizeof(ft2_font_map_t));
+       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;
        }
 
-       Font_Postprocess(font, NULL, 0, bytesPerPixel, mapstart->size*2, mapstart->size*2, &gpad_l, &gpad_r, &gpad_t, &gpad_b);
+       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_%lx",
+               font->name,
+               (double) mapstart->intSize,
+               (int) load_flags,
+               (double) font->settings->blur,
+               (double) font->settings->outline,
+               (double) font->settings->shadowx,
+               (double) font->settings->shadowy,
+               (double) font->settings->shadowz,
+               (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
+       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, 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;
@@ -1116,21 +1549,57 @@ 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;
-       data = Mem_Alloc(font_mempool, (FONT_CHAR_LINES * map->glyphSize) * pitch);
+       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)
        {
-               Con_Printf("ERROR: Failed to allocate memory for font %s size %g\n", font->name, map->size);
+               Con_Printf(CON_ERROR "ERROR: Failed to allocate memory for font %s size %g\n", font->name, map->size);
                Mem_Free(map);
                return false;
        }
-       memset(map->width_of, 0, sizeof(map->width_of));
+
+       if (use_incmap)
+       {
+               if (mapstart->incmap == NULL)
+               {
+                       // initial incmap
+                       incmap = mapstart->incmap = (font_incmap_t *)Mem_Alloc(font_mempool, sizeof(font_incmap_t));
+                       if (!incmap)
+                       {
+                               Con_Printf(CON_ERROR "ERROR: Out of memory when allocating incremental fontmap for %s\n", font->name);
+                               return false;
+                       }
+                       // 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;
+       }
 
        // initialize as white texture with zero alpha
        tp = 0;
-       while (tp < (FONT_CHAR_LINES * map->glyphSize) * pitch)
+       while (tp < datasize)
        {
-               if (bytesPerPixel == 4)
+               if (bytes_per_pixel == 4)
                {
                        data[tp++] = 0xFF;
                        data[tp++] = 0xFF;
@@ -1139,46 +1608,34 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                data[tp++] = 0x00;
        }
 
-       // 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;
-
-       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;
                FT_GlyphSlot glyph;
                FT_Bitmap *bmp;
-               unsigned char *imagedata, *dst, *src;
+               unsigned char *imagedata = NULL, *dst, *src;
                glyph_slot_t *mapglyph;
                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)
+               map->glyphchars[mapch] = (Uchar)ch;
+
+               if (data)
                {
-                       gC -= FONT_CHARS_PER_LINE;
-                       ++gR;
+                       imagedata = data + glyph_row * pitch * map->glyphSize + glyph_column * map->glyphSize * bytes_per_pixel;
+                       imagedata += gpad_t * pitch + gpad_l * bytes_per_pixel;
                }
-
-               imagedata = data + gR * pitch * map->glyphSize + gC * map->glyphSize * bytesPerPixel;
-               imagedata += gpad_t * pitch + gpad_l * bytesPerPixel;
                //status = qFT_Load_Char(face, ch, FT_LOAD_RENDER);
                // we need the glyphIndex
-               face = font->face;
+               face = (FT_Face)font->face;
                usefont = NULL;
                if (font->image_font && mapch == ch && img_fontmap[mapch])
                {
@@ -1195,7 +1652,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                                if (!Font_SetSize(usefont, mapstart->intSize, mapstart->intSize))
                                        continue;
                                // try that glyph
-                               face = usefont->face;
+                               face = (FT_Face)usefont->face;
                                glyphIndex = qFT_Get_Char_Index(face, ch);
                                if (glyphIndex == 0)
                                        continue;
@@ -1208,7 +1665,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        {
                                //Con_Printf("failed to load fallback glyph for char %lx from font %s\n", (unsigned long)ch, font->name);
                                // now we let it use the "missing-glyph"-glyph
-                               face = font->face;
+                               face = (FT_Face)font->face;
                                glyphIndex = 0;
                        }
                }
@@ -1216,7 +1673,7 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                if (!usefont)
                {
                        usefont = font;
-                       face = font->face;
+                       face = (FT_Face)font->face;
                        status = qFT_Load_Glyph(face, glyphIndex, FT_LOAD_RENDER | load_flags);
                        if (status)
                        {
@@ -1233,98 +1690,110 @@ 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)
                                h = map->glyphSize;
                }
 
-               switch (bmp->pixel_mode)
+               if (imagedata)
                {
-               case FT_PIXEL_MODE_MONO:
-                       if (developer_font.integer)
-                               Con_DPrint("glyphinfo:   Pixel Mode: MONO\n");
-                       break;
-               case FT_PIXEL_MODE_GRAY2:
-                       if (developer_font.integer)
-                               Con_DPrint("glyphinfo:   Pixel Mode: GRAY2\n");
-                       break;
-               case FT_PIXEL_MODE_GRAY4:
-                       if (developer_font.integer)
-                               Con_DPrint("glyphinfo:   Pixel Mode: GRAY4\n");
-                       break;
-               case FT_PIXEL_MODE_GRAY:
-                       if (developer_font.integer)
-                               Con_DPrint("glyphinfo:   Pixel Mode: GRAY\n");
-                       break;
-               default:
-                       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);
-                       return false;
-               }
-               for (y = 0; y < h; ++y)
-               {
-                       dst = imagedata + y * pitch;
-                       src = bmp->buffer + y * bmp->pitch;
-
                        switch (bmp->pixel_mode)
                        {
                        case FT_PIXEL_MODE_MONO:
-                               dst += bytesPerPixel - 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;
-                               }
+                               if (developer_font.integer)
+                                       Con_DPrint("glyphinfo:   Pixel Mode: MONO\n");
                                break;
                        case FT_PIXEL_MODE_GRAY2:
-                               dst += bytesPerPixel - 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;
-                               }
+                               if (developer_font.integer)
+                                       Con_DPrint("glyphinfo:   Pixel Mode: GRAY2\n");
                                break;
                        case FT_PIXEL_MODE_GRAY4:
-                               dst += bytesPerPixel - 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;
-                               }
+                               if (developer_font.integer)
+                                       Con_DPrint("glyphinfo:   Pixel Mode: GRAY4\n");
                                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
-
-                               //memcpy((void*)dst, (void*)src, bmp->pitch);
-                               //dst += bmp->pitch;
+                               if (developer_font.integer)
+                                       Con_DPrint("glyphinfo:   Pixel Mode: GRAY\n");
                                break;
                        default:
-                               break;
+                               if (developer_font.integer)
+                                       Con_DPrintf("glyphinfo:   Pixel Mode: Unknown: %i\n", bmp->pixel_mode);
+                               Mem_Free(data);
+                               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)
+                       {
+                               dst = imagedata + y * pitch;
+                               src = bmp->buffer + y * bmp->pitch;
+
+                               switch (bmp->pixel_mode)
+                               {
+                               case FT_PIXEL_MODE_MONO:
+                                       dst += bytes_per_pixel - 1; // shift to alpha byte
+                                       for (x = 0; x < bmp->width; x += 8)
+                                       {
+                                               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 += bytes_per_pixel - 1; // shift to alpha byte
+                                       for (x = 0; x < bmp->width; x += 4)
+                                       {
+                                               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 += bytes_per_pixel - 1; // shift to alpha byte
+                                       for (x = 0; x < bmp->width; x += 2)
+                                       {
+                                               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[(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;
+                                       break;
+                               default:
+                                       break;
+                               }
                        }
+
+                       pad_l = gpad_l;
+                       pad_r = gpad_r;
+                       pad_t = gpad_t;
+                       pad_b = gpad_b;
+                       Font_Postprocess(font, imagedata, pitch, bytes_per_pixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
+               }
+               else
+               {
+                       pad_l = gpad_l;
+                       pad_r = gpad_r;
+                       pad_t = gpad_t;
+                       pad_b = gpad_b;
+                       Font_Postprocess(font, NULL, pitch, bytes_per_pixel, w, h, &pad_l, &pad_r, &pad_t, &pad_b);
                }
 
-               pad_l = gpad_l;
-               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);
 
                // now fill map->glyphs[ch - map->start]
                mapglyph = &map->glyphs[mapch];
@@ -1339,10 +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;
@@ -1359,7 +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);
@@ -1373,64 +1842,171 @@ static qboolean Font_LoadMap(ft2_font_t *font, ft2_font_map_t *mapstart, Uchar _
                        }
                }
                map->glyphs[mapch].image = false;
-       }
-
-       // create a texture from the data now
 
-       if (developer_font.integer > 100)
-       {
-               // LordHavoc: why are we writing this?  And why not write it as TGA using the appropriate function?
-               // view using `display -depth 8 -size 512x512 name_page.rgba` (be sure to use a correct -size parameter)
-               dpsnprintf(map_identifier, sizeof(map_identifier), "%s_%u.rgba", font->name, (unsigned)map->start/FONT_CHARS_PER_MAP);
-               FS_WriteFile(map_identifier, data, pitch * FONT_CHAR_LINES * map->glyphSize);
+               ++mapch; ++ch;
+               if ((int)mapch == chars_per_map)
+                       break;
+               if (++glyph_column % chars_per_line == 0)
+               {
+                       glyph_column = 0;
+                       ++glyph_row;
+               }
        }
-       dpsnprintf(map_identifier, sizeof(map_identifier), "%s_%u", font->name, (unsigned)map->start/FONT_CHARS_PER_MAP);
 
-       // probably use bytesPerPixel here instead?
-       if (r_font_use_alpha_textures.integer)
-       {
-               map->texture = R_LoadTexture2D(font_texturepool, map_identifier,
-                                              map->glyphSize * FONT_CHARS_PER_LINE,
-                                              map->glyphSize * FONT_CHAR_LINES,
-                                              data, TEXTYPE_ALPHA, TEXF_ALPHA /*gone: | TEXF_ALWAYSPRECACHE*/ /* | TEXF_MIPMAP*/, NULL);
-       } else {
-               map->texture = R_LoadTexture2D(font_texturepool, map_identifier,
-                                              map->glyphSize * FONT_CHARS_PER_LINE,
-                                              map->glyphSize * FONT_CHAR_LINES,
-                                              data, TEXTYPE_RGBA, TEXF_ALPHA /*gone: | TEXF_ALWAYSPRECACHE*/ /* | TEXF_MIPMAP*/, NULL);
-       }
+       // update the pic returned by Draw_CachePic_Flags earlier to contain our texture
+       update_pic_for_fontmap(map, map_identifier, width, height, data);
 
-       Mem_Free(data);
-       if (!map->texture)
+       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);
 }