1. Fix legacy BIDI bracket reordering/mirroring for MBC Achar32.

2. Fix wrong BIDI type mapping for ISO8859-6 0xEF.

.gitignore

@@ -10,6 +10,7 @@ Makefile
 Makefile.in
 .deps/
 .libs/
+m4/*.m4
 /acinclude.m4
 /aclocal.m4
 /autom4te.cache
@@ -21,6 +22,7 @@ Makefile.in
 /depcomp
 /install-sh
 /libtool
+/ltmain.sh
 /*.pc
 /*config.h
 /*config.h.in

Makefile.am

@@ -1,3 +1,5 @@
+ACLOCAL_AMFLAGS = -I m4
+
 SUBDIRS = src 3rd-party include rtos etc m4 cmake build
 
 EXTRA_DIST = minigui.pc.in \

README.md

@@ -566,7 +566,7 @@ A brief history description of the development progress is listed as follow:
 1. Jan., 2022:     FMSoft released MiniGUI version 5.0.9.
 1. Sep., 2022:     FMSoft released MiniGUI version 5.0.10.
 1. Aug., 2023:     FMSoft released MiniGUI version 5.0.13.
-1. May., 2025:     FMSoft released MiniGUI version 5.0.15.
+1. May., 2025:     FMSoft released MiniGUI version 5.0.16.
 
 ## AUTHORS AND COPYING
 

RELEASE-NOTES.md

@@ -1,5 +1,7 @@
 # Release Notes
 
+- [Version 5.0.16](#version-5016)
+   + [What's new in version 5.0.16](#whats-new-in-version-5016)
 - [Version 5.0.15](#version-5015)
    + [What's new in version 5.0.15](#whats-new-in-version-5015)
 - [Version 5.0.13](#version-5013)
@@ -34,6 +36,19 @@
    + [Changes leading to incompatibility](#changes-leading-to-incompatibility)
    + [Deprecated APIs](#deprecated-apis)
 
+## Version 5.0.16
+
+On May 27, 2025, FMSoft announces the availability of MiniGUI 5.0.16,
+which is a bugfix release with some minor enhancements of MiniGUI 5.0.x.
+
+* BUGFIXING:
+   - The desktop thread can not handle the request from other threads as soon as possible.
+   - The `MSG_TIMEOUT` message can not be fired correctly under MiniGUI-Threads mode.
+   - Bad subpixel rendering when background color is RGBA0000.
+* TUNING:
+   - Tune `configure.ac` and `Makefile.am` to use the system libtool scripts.
+   - Do not check `pciaccess` if the target architecture is not `i386`.
+
 ## Version 5.0.15
 
 On May 09, 2025, FMSoft announces the availability of MiniGUI 5.0.15,

Version.md

@@ -1,4 +1,4 @@
-Version 5.0.15 (2025/05/09)
+Version 5.0.16 (2025/05/27)
 
 This is a minor enhancement and bugfix release of MiniGUI 5.0.x, the stable version.
 

autogen.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
-cat m4/*.m4 > acinclude.m4
+libtoolize
+cat m4/*.m4 > aclocal.m4
 aclocal
 autoheader
 automake --add-missing --foreign --copy

configure.ac

@@ -1,7 +1,8 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.60)
-AC_INIT(libminigui, 5.0.15)
+AC_PREREQ([2.71])
+AC_INIT([libminigui],[5.0.16])
 AC_CONFIG_SRCDIR(src/main/main.c)
+AC_CONFIG_MACRO_DIRS([m4])
 
 dnl Set various version strings - taken gratefully from the SDL sources
 #
@@ -16,9 +17,9 @@ dnl Set various version strings - taken gratefully from the SDL sources
 #
 MINIGUI_MAJOR_VERSION=5
 MINIGUI_MINOR_VERSION=0
-MINIGUI_MICRO_VERSION=15
-MINIGUI_INTERFACE_AGE=0
-MINIGUI_BINARY_AGE=0
+MINIGUI_MICRO_VERSION=16
+MINIGUI_INTERFACE_AGE=1
+MINIGUI_BINARY_AGE=1
 MINIGUI_VERSION=$MINIGUI_MAJOR_VERSION.$MINIGUI_MINOR_VERSION.$MINIGUI_MICRO_VERSION
 
 AC_SUBST(MINIGUI_MAJOR_VERSION)
@@ -40,27 +41,24 @@ AC_SUBST(LT_CURRENT)
 AC_SUBST(LT_REVISION)
 AC_SUBST(LT_AGE)
 
-AC_CANONICAL_SYSTEM
+AC_CANONICAL_TARGET
 
 dnl ========================================================================
 dnl Init automake
 AM_INIT_AUTOMAKE
 
-AC_CONFIG_HEADER(mgconfig.h)
+AC_CONFIG_HEADERS([mgconfig.h])
 
 dnl ========================================================================
 dnl Check for tools
-AC_PROG_LIBTOOL
 AC_PROG_CC
-AC_PROG_LD
-AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
+LT_INIT
 
 dnl ========================================================================
 dnl Checks for header files.
-AC_HEADER_STDC
 AC_HEADER_DIRENT
 AC_CHECK_HEADERS(limits.h math.h stdatomic.h locale.h unistd.h termio.h sys/types.h sys/time.h sys/select.h sys/memfd.h)
 
@@ -68,7 +66,6 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_C_INLINE
 AC_TYPE_SIZE_T
-AC_HEADER_TIME
 AC_STRUCT_TM
 
 dnl Checks for library functions.
@@ -884,14 +881,14 @@ CheckFBCON()
     if test "x$enable_video_fbcon" = "xyes"; then
         AC_MSG_CHECKING(for FrameBuffer console support)
         video_fbcon=no
-        AC_TRY_COMPILE([
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
          #include <linux/fb.h>
          #include <linux/kd.h>
          #include <linux/keyboard.h>
-        ],[
-        ],[
+        ]], [[
+        ]])],[
         video_fbcon=yes
-        ])
+        ],[])
         AC_MSG_RESULT($video_fbcon)
         if test "x$video_fbcon" = "xyes"; then
             AC_DEFINE(_MGGAL_FBCON, 1,
@@ -899,9 +896,13 @@ CheckFBCON()
             VIDEO_SUBDIRS="$VIDEO_SUBDIRS fbcon"
             VIDEO_DRIVERS="$VIDEO_DRIVERS fbcon/libvideo_fbcon.la"
 
-            have_pciaccess="yes"
-            AC_CHECK_LIB(pciaccess, pci_system_init,
-                DEP_LIBS="$DEP_LIBS -lpciaccess", have_pciaccess="no")
+            if test "x$target_cpu" = "xi386"; then
+                have_pciaccess="yes"
+                AC_CHECK_LIB(pciaccess, pci_system_init,
+                    DEP_LIBS="$DEP_LIBS -lpciaccess", have_pciaccess="no")
+            else
+                have_pciaccess="no"
+            fi
 
             if test "x$have_pciaccess" = "xyes"; then
                 AC_DEFINE(_MGHAVE_PCIACCESS, 1,
@@ -1170,12 +1171,12 @@ CheckDirectFBVideo()
     if test "x$enable_video_dfb" = "xyes"; then
         AC_MSG_CHECKING(for DirectFB support)
         video_dfb=no
-        AC_TRY_COMPILE([
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
          #include <directfb.h>
-        ],[
-        ],[
+        ]], [[
+        ]])],[
         video_dfb=yes
-        ])
+        ],[])
         AC_MSG_RESULT($video_dfb)
         if test "x$video_dfb" = "xyes"; then
             AC_DEFINE(_MGGAL_DFB, 1,
@@ -2641,7 +2642,7 @@ if test "x$devel_mode" = "xyes"; then
         CPPFLAGS="$CPPFLAGS -D_DEBUG"
     fi
 
-    if test "$ac_cv_prog_gcc" = "yes"; then
+    if test "$ac_cv_c_compiler_gnu" = "yes"; then
         CFLAGS="$CFLAGS -Wall -Werror"
     fi
 
@@ -2651,7 +2652,7 @@ else
     CPPFLAGS="$CPPFLAGS -DNDEBUG"
 fi
 
-if test "$ac_cv_prog_gcc" = "yes"; then
+if test "$ac_cv_c_compiler_gnu" = "yes"; then
     CFLAGS="$CFLAGS -fmax-errors=10 -Wstrict-prototypes -pipe"
 fi
 
@@ -2688,8 +2689,7 @@ AM_CONDITIONAL(MGLIB_MVFB, test "x$with_libsuffix" = "xmvfb")
 AM_CONDITIONAL(MG_ENABLE_SPLASH, test "x$build_splash" = "xyes")
 AM_CONDITIONAL(MG_ENABLE_SCREENSAVER, test "x$build_screensaver" = "xyes")
 
-AC_OUTPUT(
-minigui.pc
+AC_CONFIG_FILES([minigui.pc
 Makefile
 cmake/Makefile
 src/Makefile
@@ -2756,7 +2756,8 @@ etc/Makefile
 3rd-party/scripteasy/Makefile
 m4/Makefile
 build/Makefile
-)
+])
+AC_OUTPUT
 
 CCVERSION=`$CC --version | head -n 1`
 
@@ -2765,6 +2766,7 @@ AC_MSG_NOTICE([
 # Main building configuration:
 
 ## Global Features:
+  * Architecture:       ${target_cpu}
   * Operating system:   ${osname}
   * Runtime mode:       ${runtime_mode}
   * Virtual Window:     ${virtual_window}

m4/Makefile.am

@@ -1,4 +1,4 @@
 # This file does not do anything, except making sure these files are included
 # when you run 'make dist'.
 
-EXTRA_DIST = libtool.m4
+EXTRA_DIST = 

src/font/charset-arabic.c

@@ -166,7 +166,7 @@ static unsigned short iso8859_68x_unicode_map [] =
     0xFEB3, 0xFEB7, 0xFEBB, 0xFEBF, /*0xF1~0xF4*/
     0xFECB, 0xFECF, 0xFED3, 0xFED7, /*0xF5~0xF8*/
     0xFEDB, 0xFEDF, 0xFEE3, 0xFEE7, /*0xF9~0xFC*/
-    0xFEEB, 0xFEF4, 0xFFFF,         /*0xFD~0xFF*/
+    0xFEEB, 0xFEF3, 0xFFFF,         /*0xFD~0xFF*/
 
     0xFEC4, 0xFEC6, 0xFE82, 0xFE84, /*0x100~0x103*/
     0xFE86, 0xFE88, 0xFE8C, 0xFE8E, /*0x104~0x107*/
@@ -576,7 +576,7 @@ static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
     BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
     BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
     BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
-    BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_ON,
+    BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
 
     /*0xf0~0xff*/
     BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,

src/font/legacy-bidi.c

@@ -286,7 +286,7 @@ static TYPERUN* get_runtype_link (const CHARSETOPS* charset_ops, Achar32* achars
     last = list;
 
     for (i = 0; i < len; i++){
-        if ((type = charset_ops->bidi_char_type (achars[i])) != last->type){
+        if ((type = charset_ops->bidi_char_type (REAL_ACHAR(achars[i]))) != last->type){
             link = calloc(1, sizeof(TYPERUN));
             link->type = type;
             link->pos = i;
@@ -456,7 +456,7 @@ static void bidi_resolveWeak(TYPERUN **ptype_rl_list, Uint32 base_dir)
             prev_type_org = TYPE(pp);
     }
 
-    compact_neutrals (type_rl_list);
+    compact_list (type_rl_list);
 
 #ifdef BIDI_DEBUG
     print_run_types(type_rl_list);
@@ -469,19 +469,115 @@ static void bidi_resolveWeak(TYPERUN **ptype_rl_list, Uint32 base_dir)
 #define BIDI_EMBEDDING_DIR(list) BIDI_LEVEL_TO_DIR(LEVEL(list))
 
 /* 4.Resolving Neutral Types */
-static void bidi_resolveNeutrals(TYPERUN **ptype_rl_list, Uint32 base_bir)
+static void bidi_resolveNeutrals(const CHARSETOPS* charset_ops, Achar32* achars, int len,
+        TYPERUN **ptype_rl_list, Uint32 base_bir)
 {
     TYPERUN *type_rl_list = *ptype_rl_list, *pp = NULL;
+    Uint32* bracket_types = NULL;
+    int i;
+
+    if (charset_ops->bidi_mirror_char && achars && len > 0) {
+        typedef struct {
+            int pos;
+            Achar32 mirror;
+        } BRSTACK;
+
+        BRSTACK* stack = NULL;
+        int top = 0;
+
+        bracket_types = calloc(len, sizeof(Uint32));
+        stack = calloc(len, sizeof(BRSTACK));
+
+        if (bracket_types && stack) {
+            for (i = 0; i < len; i++) {
+                Achar32 ch = REAL_ACHAR(achars[i]);
+                Achar32 mirrored;
+                if (!charset_ops->bidi_mirror_char(ch, &mirrored))
+                    continue;
+
+                if (ch < mirrored) {
+                    stack[top].pos = i;
+                    stack[top].mirror = mirrored;
+                    top++;
+                }
+                else {
+                    if (top > 0 && stack[top - 1].mirror == ch) {
+                        int open_pos = stack[top - 1].pos;
+                        int close_pos = i;
+                        Uint32 found_dir = BIDI_TYPE_ON;
+                        int k;
+
+                        for (k = open_pos + 1; k < close_pos; k++) {
+                            Uint32 t = charset_ops->bidi_char_type(REAL_ACHAR(achars[k]));
+                            if (t == BIDI_TYPE_AL)
+                                t = BIDI_TYPE_RTL;
+                            if (BIDI_IS_LETTER(t)) {
+                                found_dir = BIDI_IS_RTL(t) ? BIDI_TYPE_RTL : BIDI_TYPE_LTR;
+                                break;
+                            }
+                        }
+
+                        if (found_dir != BIDI_TYPE_ON) {
+                            bracket_types[open_pos] = found_dir;
+                            bracket_types[close_pos] = found_dir;
+                        }
+
+                        top--;
+                    }
+                }
+            }
+        }
+
+        if (stack)
+            free(stack);
+    }
+
+    if (bracket_types) {
+        for (pp = type_rl_list->next; pp->next; pp = pp->next) {
+            if (BIDI_IS_NEUTRAL(TYPE(pp))) {
+                int start = POS(pp);
+                int end = start + LEN(pp);
+                Uint32 forced = BIDI_TYPE_ON;
+
+                if (end > len)
+                    end = len;
+
+                for (i = start; i < end; i++) {
+                    if (bracket_types[i] == BIDI_TYPE_RTL) {
+                        forced = BIDI_TYPE_RTL;
+                        break;
+                    }
+                    if (bracket_types[i] == BIDI_TYPE_LTR) {
+                        forced = BIDI_TYPE_LTR;
+                    }
+                }
+
+                if (forced != BIDI_TYPE_ON) {
+                    TYPE(pp) = forced;
+                }
+            }
+        }
+        compact_list (type_rl_list);
+    }
 
     DBGLOG ("\n4.Resolving neutral types\n");
 
     for (pp = type_rl_list->next; pp->next; pp = pp->next)
     {
         Uint32 prev_type, this_type, next_type;
+        TYPERUN* prev = NULL;
+        TYPERUN* next = NULL;
+
+        prev = pp->prev;
+        while (prev && BIDI_IS_NEUTRAL(TYPE(prev)) && !BIDI_IS_SENTINEL(TYPE(prev)))
+            prev = prev->prev;
+        prev_type = (!prev || BIDI_IS_SENTINEL(TYPE(prev))) ? base_bir : TYPE(prev);
 
-        prev_type = TYPE(pp->prev);
         this_type = TYPE(pp);
-        next_type = (pp->next) ? TYPE(pp->next) : this_type;
+        next = pp->next;
+        while (next && BIDI_IS_NEUTRAL(TYPE(next)) && !BIDI_IS_SENTINEL(TYPE(next)))
+            next = next->next;
+        next_type = (!next || BIDI_IS_SENTINEL(TYPE(next))) ? base_bir : TYPE(next);
         /* "European and arabic numbers are treated as though they were R, NUMBER_TO_RTL does this. */
         this_type = BIDI_NUMBER_TO_RTL(this_type);
         prev_type = BIDI_NUMBER_TO_RTL(prev_type);
@@ -498,6 +594,9 @@ static void bidi_resolveNeutrals(TYPERUN **ptype_rl_list, Uint32 base_bir)
     print_resolved_levels (type_rl_list);
     print_resolved_types (type_rl_list);
 #endif
+
+    if (bracket_types)
+        free(bracket_types);
 }
 
 /* 5.Resolving implicit levels. */
@@ -549,10 +648,13 @@ bidi_resolveMirrorChar (const CHARSETOPS* charset_ops, Achar32* achars, int len,
             int i;
             for (i = POS (pp); i < POS (pp) + LEN (pp); i++)
             {
+                Achar32 ch = achars[i];
+                Achar32 real_ch = REAL_ACHAR(ch);
                 Achar32 mirrored_ch;
                 if (charset_ops->bidi_mirror_char &&
-                        charset_ops->bidi_mirror_char (achars[i], &mirrored_ch))
-                    achars[i] = mirrored_ch;
+                        charset_ops->bidi_mirror_char (real_ch, &mirrored_ch)) {
+                    achars[i] = IS_MBCHV(ch) ? SET_MBCHV(mirrored_ch) : mirrored_ch;
+                }
             }
         }
     }
@@ -593,7 +695,7 @@ static void bidi_resolve_string (const CHARSETOPS* charset_ops,
     bidi_resolveWeak(&type_rl_list, base_dir);
 
     /* 4.Resolving Neutral Types */
-    bidi_resolveNeutrals(&type_rl_list, base_dir);
+    bidi_resolveNeutrals(charset_ops, achars, len, &type_rl_list, base_dir);
 
     /* 5.Resolving implicit levels. */
     *pmax_level = bidi_resolveImplicit(&type_rl_list, base_level);
@@ -826,4 +928,3 @@ Uint32 __mg_legacy_bidi_str_base_dir (const CHARSETOPS* charset_ops,
 
     return base_dir;
 }
-

src/newgdi/glyph.c

@@ -1092,6 +1092,67 @@ nodraw_ret:
 }
 
 #ifdef _MGFONT_FT2
+
+static RGB blend_pixel(RGB font_pixel, RGB fg_color, RGB bg_color)
+{
+    RGB result;
+
+    Uint8 src_pre_r, src_pre_g, src_pre_b;
+    Uint8 bg_pre_r, bg_pre_g, bg_pre_b, alpha_bg;
+    Uint8 out_r, out_g, out_b, alpha_out;
+
+    uint8_t alpha_font = 0.299 * font_pixel.r + 0.587 * font_pixel.g +
+        0.114 * font_pixel.b;
+
+    uint16_t alpha_src = (fg_color.a * alpha_font + 127) / 255;
+
+    if (alpha_src == 0) {
+        result = bg_color;
+        goto out;
+    }
+
+    src_pre_r = (fg_color.r * alpha_src + 127) / 255;
+    src_pre_g = (fg_color.g * alpha_src + 127) / 255;
+    src_pre_b = (fg_color.b * alpha_src + 127) / 255;
+
+    bg_pre_r = (bg_color.r * bg_color.a + 127) / 255;
+    bg_pre_g = (bg_color.g * bg_color.a + 127) / 255;
+    bg_pre_b = (bg_color.b * bg_color.a + 127) / 255;
+    alpha_bg = bg_color.a;
+
+    out_r = src_pre_r + (bg_pre_r * (255 - alpha_src)) / 255;
+    out_g = src_pre_g + (bg_pre_g * (255 - alpha_src)) / 255;
+    out_b = src_pre_b + (bg_pre_b * (255 - alpha_src)) / 255;
+    alpha_out = alpha_src + (alpha_bg * (255 - alpha_src)) / 255;
+
+    if (out_r > 255) {
+        out_r = 255;
+    }
+
+    if (out_g > 255) {
+        out_g = 255;
+    }
+
+    if (out_b > 255) {
+        out_b = 255;
+    }
+
+    if (alpha_out > 0) {
+        result.r = (out_r * 255 + alpha_out / 2) / alpha_out;
+        result.g = (out_g * 255 + alpha_out / 2) / alpha_out;
+        result.b = (out_b * 255 + alpha_out / 2) / alpha_out;
+        result.a = (uint8_t) alpha_out;
+    } else {
+        result.r = 0;
+        result.g = 0;
+        result.b = 0;
+        result.a = 0;
+    }
+
+out:
+    return result;
+}
+
 static void _dc_ft2subpixel_scan_line(PDC pdc, int xpos, int ypos,
         SCANLINE_CTXT* ctxt)
 {
@@ -1112,8 +1173,8 @@ static void _dc_ft2subpixel_scan_line(PDC pdc, int xpos, int ypos,
                     ctxt->glyph_ascent, ctxt->glyph_line,
                     ctxt->glyph_advance);
 
-    GAL_GetRGB (pdc->textcolor, pdc->surface->format, &rgba_fg.r,
-            &rgba_fg.g, &rgba_fg.b);
+    GAL_GetRGBA (pdc->textcolor, pdc->surface->format, &rgba_fg.r,
+            &rgba_fg.g, &rgba_fg.b, &rgba_fg.a);
 
     for (x = 0; x < ctxt->bmp_w; x++) {
         if (!PtInRect (&pdc->rc_output, x+xpos, ypos)) {
@@ -1130,8 +1191,8 @@ static void _dc_ft2subpixel_scan_line(PDC pdc, int xpos, int ypos,
         _glyph_move_to_pixel (pdc, x+xpos, ypos);
         pixel = _mem_get_pixel(pdc->cur_dst, GAL_BytesPerPixel (pdc->surface));
 
-        GAL_GetRGB (pixel, pdc->surface->format, &rgba_cur.r,
-                    &rgba_cur.g, &rgba_cur.b);
+        GAL_GetRGBA (pixel, pdc->surface->format, &rgba_cur.r,
+                    &rgba_cur.g, &rgba_cur.b, &rgba_cur.a);
 
 #define C_ALPHA(p, Cs, Cd)              \
             if (*p++) {                 \
@@ -1140,14 +1201,25 @@ static void _dc_ft2subpixel_scan_line(PDC pdc, int xpos, int ypos,
                 Cd = sub_val >> 8;      \
             }
 
-        C_ALPHA(bits, rgba_fg.r, rgba_cur.r);
-        C_ALPHA(bits, rgba_fg.g, rgba_cur.g);
-        C_ALPHA(bits, rgba_fg.b, rgba_cur.b);
+        if (rgba_cur.r == 0 && rgba_cur.g == 0 && rgba_cur.b == 0 &&
+                rgba_cur.a == 0) {
+            RGB font_pixel = {bits[0], bits[1], bits[2], 255};
+            RGB ret = blend_pixel(font_pixel, rgba_fg, rgba_cur);
+            rgba_cur = ret;
+            bits += 3;
+        }
+        else {
+            C_ALPHA(bits, rgba_fg.r, rgba_cur.r);
+            C_ALPHA(bits, rgba_fg.g, rgba_cur.g);
+            C_ALPHA(bits, rgba_fg.b, rgba_cur.b);
+            rgba_cur.a = 255.0;
+        }
+
 
 #undef C_ALPHA
 
-        pdc->cur_pixel = GAL_MapRGB (pdc->surface->format, rgba_cur.r,
-                    rgba_cur.g, rgba_cur.b);
+        pdc->cur_pixel = GAL_MapRGBA (pdc->surface->format, rgba_cur.r,
+                    rgba_cur.g, rgba_cur.b, rgba_cur.a);
 
         if (pdc->cur_pixel != pixel) {
             _glyph_draw_pixel (pdc, x+xpos, ypos, pdc->cur_pixel);