From f5dd1cff9405d561192414284e648862bb6d56b2 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 12 Aug 2009 10:19:59 -0600 Subject: gallium/glx/xlib: rename fakeglx_fonts.c to glx_usefont.c --- src/gallium/state_trackers/glx/xlib/Makefile | 2 +- src/gallium/state_trackers/glx/xlib/SConscript | 2 +- .../state_trackers/glx/xlib/fakeglx_fonts.c | 376 --------------------- src/gallium/state_trackers/glx/xlib/glx_usefont.c | 376 +++++++++++++++++++++ 4 files changed, 378 insertions(+), 378 deletions(-) delete mode 100644 src/gallium/state_trackers/glx/xlib/fakeglx_fonts.c create mode 100644 src/gallium/state_trackers/glx/xlib/glx_usefont.c (limited to 'src') diff --git a/src/gallium/state_trackers/glx/xlib/Makefile b/src/gallium/state_trackers/glx/xlib/Makefile index 7302ad0aab..1158de2d13 100644 --- a/src/gallium/state_trackers/glx/xlib/Makefile +++ b/src/gallium/state_trackers/glx/xlib/Makefile @@ -11,7 +11,7 @@ LIBRARY_INCLUDES = \ C_SOURCES = \ glx_getproc.c \ fakeglx.c \ - fakeglx_fonts.c \ + glx_usefont.c \ xm_api.c include ../../../Makefile.template diff --git a/src/gallium/state_trackers/glx/xlib/SConscript b/src/gallium/state_trackers/glx/xlib/SConscript index 684379e071..9e68fba018 100644 --- a/src/gallium/state_trackers/glx/xlib/SConscript +++ b/src/gallium/state_trackers/glx/xlib/SConscript @@ -21,7 +21,7 @@ if env['platform'] == 'linux' \ source = [ 'glx_getproc.c', 'fakeglx.c', - 'fakeglx_fonts.c', + 'glx_usefont.c', 'xm_api.c', ] ) diff --git a/src/gallium/state_trackers/glx/xlib/fakeglx_fonts.c b/src/gallium/state_trackers/glx/xlib/fakeglx_fonts.c deleted file mode 100644 index 45b91c850a..0000000000 --- a/src/gallium/state_trackers/glx/xlib/fakeglx_fonts.c +++ /dev/null @@ -1,376 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 7.6 - * - * Copyright (C) 1995 Thorsten.Ohl @ Physik.TH-Darmstadt.de - * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. - * Copyright (C) 2009 VMware, Inc. All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/** - * Fake implementation of glXUseXFont(). - * XXX rename this file to glx_usefont.c - */ - - -#include "context.h" -#include "imports.h" -#include - - -/* Some debugging info. */ - -#ifdef DEBUG -#undef _R -#undef _G -#undef _B -#include - -int debug_xfonts = 0; - -static void -dump_char_struct(XCharStruct * ch, char *prefix) -{ - printf("%slbearing = %d, rbearing = %d, width = %d\n", - prefix, ch->lbearing, ch->rbearing, ch->width); - printf("%sascent = %d, descent = %d, attributes = %u\n", - prefix, ch->ascent, ch->descent, (unsigned int) ch->attributes); -} - -static void -dump_font_struct(XFontStruct * font) -{ - printf("ascent = %d, descent = %d\n", font->ascent, font->descent); - printf("char_or_byte2 = (%u,%u)\n", - font->min_char_or_byte2, font->max_char_or_byte2); - printf("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1); - printf("all_chars_exist = %s\n", font->all_chars_exist ? "True" : "False"); - printf("default_char = %c (\\%03o)\n", - (char) (isprint(font->default_char) ? font->default_char : ' '), - font->default_char); - dump_char_struct(&font->min_bounds, "min> "); - dump_char_struct(&font->max_bounds, "max> "); -#if 0 - for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) { - char prefix[8]; - sprintf(prefix, "%d> ", c); - dump_char_struct(&font->per_char[c], prefix); - } -#endif -} - -static void -dump_bitmap(unsigned int width, unsigned int height, GLubyte * bitmap) -{ - unsigned int x, y; - - printf(" "); - for (x = 0; x < 8 * width; x++) - printf("%o", 7 - (x % 8)); - putchar('\n'); - for (y = 0; y < height; y++) { - printf("%3o:", y); - for (x = 0; x < 8 * width; x++) - putchar((bitmap[width * (height - y - 1) + x / 8] & (1 << (7 - (x % - 8)))) - ? '*' : '.'); - printf(" "); - for (x = 0; x < width; x++) - printf("0x%02x, ", bitmap[width * (height - y - 1) + x]); - putchar('\n'); - } -} -#endif /* DEBUG */ - - -/* Implementation. */ - -/* Fill a BITMAP with a character C from thew current font - in the graphics context GC. WIDTH is the width in bytes - and HEIGHT is the height in bits. - - Note that the generated bitmaps must be used with - - glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE); - glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE); - glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); - glPixelStorei (GL_UNPACK_SKIP_ROWS, 0); - glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0); - glPixelStorei (GL_UNPACK_ALIGNMENT, 1); - - Possible optimizations: - - * use only one reusable pixmap with the maximum dimensions. - * draw the entire font into a single pixmap (careful with - proportional fonts!). -*/ - - -/* - * Generate OpenGL-compatible bitmap. - */ -static void -fill_bitmap(Display * dpy, Window win, GC gc, - unsigned int width, unsigned int height, - int x0, int y0, unsigned int c, GLubyte * bitmap) -{ - XImage *image; - unsigned int x, y; - Pixmap pixmap; - XChar2b char2b; - - pixmap = XCreatePixmap(dpy, win, 8 * width, height, 1); - XSetForeground(dpy, gc, 0); - XFillRectangle(dpy, pixmap, gc, 0, 0, 8 * width, height); - XSetForeground(dpy, gc, 1); - - char2b.byte1 = (c >> 8) & 0xff; - char2b.byte2 = (c & 0xff); - - XDrawString16(dpy, pixmap, gc, x0, y0, &char2b, 1); - - image = XGetImage(dpy, pixmap, 0, 0, 8 * width, height, 1, XYPixmap); - if (image) { - /* Fill the bitmap (X11 and OpenGL are upside down wrt each other). */ - for (y = 0; y < height; y++) - for (x = 0; x < 8 * width; x++) - if (XGetPixel(image, x, y)) - bitmap[width * (height - y - 1) + x / 8] |= - (1 << (7 - (x % 8))); - XDestroyImage(image); - } - - XFreePixmap(dpy, pixmap); -} - -/* - * determine if a given glyph is valid and return the - * corresponding XCharStruct. - */ -static XCharStruct * -isvalid(XFontStruct * fs, unsigned int which) -{ - unsigned int rows, pages; - unsigned int byte1 = 0, byte2 = 0; - int i, valid = 1; - - rows = fs->max_byte1 - fs->min_byte1 + 1; - pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; - - if (rows == 1) { - /* "linear" fonts */ - if ((fs->min_char_or_byte2 > which) || (fs->max_char_or_byte2 < which)) - valid = 0; - } - else { - /* "matrix" fonts */ - byte2 = which & 0xff; - byte1 = which >> 8; - if ((fs->min_char_or_byte2 > byte2) || - (fs->max_char_or_byte2 < byte2) || - (fs->min_byte1 > byte1) || (fs->max_byte1 < byte1)) - valid = 0; - } - - if (valid) { - if (fs->per_char) { - if (rows == 1) { - /* "linear" fonts */ - return (fs->per_char + (which - fs->min_char_or_byte2)); - } - else { - /* "matrix" fonts */ - i = ((byte1 - fs->min_byte1) * pages) + - (byte2 - fs->min_char_or_byte2); - return (fs->per_char + i); - } - } - else { - return (&fs->min_bounds); - } - } - return (NULL); -} - - -void -glXUseXFont(Font font, int first, int count, int listbase) -{ - Display *dpy; - Window win; - Pixmap pixmap; - GC gc; - XGCValues values; - unsigned long valuemask; - XFontStruct *fs; - GLint swapbytes, lsbfirst, rowlength; - GLint skiprows, skippixels, alignment; - unsigned int max_width, max_height, max_bm_width, max_bm_height; - GLubyte *bm; - int i; - - dpy = glXGetCurrentDisplay(); - if (!dpy) - return; /* I guess glXMakeCurrent wasn't called */ - i = DefaultScreen(dpy); - win = RootWindow(dpy, i); - - fs = XQueryFont(dpy, font); - if (!fs) { - _mesa_error(NULL, GL_INVALID_VALUE, - "Couldn't get font structure information"); - return; - } - - /* Allocate a bitmap that can fit all characters. */ - max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing; - max_height = fs->max_bounds.ascent + fs->max_bounds.descent; - max_bm_width = (max_width + 7) / 8; - max_bm_height = max_height; - - bm = (GLubyte *) MALLOC((max_bm_width * max_bm_height) * sizeof(GLubyte)); - if (!bm) { - XFreeFontInfo(NULL, fs, 1); - _mesa_error(NULL, GL_OUT_OF_MEMORY, - "Couldn't allocate bitmap in glXUseXFont()"); - return; - } - -#if 0 - /* get the page info */ - pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; - firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2; - lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2; - rows = fs->max_byte1 - fs->min_byte1 + 1; - unsigned int first_char, last_char, pages, rows; -#endif - - /* Save the current packing mode for bitmaps. */ - glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes); - glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst); - glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength); - glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows); - glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels); - glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment); - - /* Enforce a standard packing mode which is compatible with - fill_bitmap() from above. This is actually the default mode, - except for the (non)alignment. */ - glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); - glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); - glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); - glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); - glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - pixmap = XCreatePixmap(dpy, win, 10, 10, 1); - values.foreground = BlackPixel(dpy, DefaultScreen(dpy)); - values.background = WhitePixel(dpy, DefaultScreen(dpy)); - values.font = fs->fid; - valuemask = GCForeground | GCBackground | GCFont; - gc = XCreateGC(dpy, pixmap, valuemask, &values); - XFreePixmap(dpy, pixmap); - -#ifdef DEBUG - if (debug_xfonts) - dump_font_struct(fs); -#endif - - for (i = 0; i < count; i++) { - unsigned int width, height, bm_width, bm_height; - GLfloat x0, y0, dx, dy; - XCharStruct *ch; - int x, y; - unsigned int c = first + i; - int list = listbase + i; - int valid; - - /* check on index validity and get the bounds */ - ch = isvalid(fs, c); - if (!ch) { - ch = &fs->max_bounds; - valid = 0; - } - else { - valid = 1; - } - -#ifdef DEBUG - if (debug_xfonts) { - char s[7]; - sprintf(s, isprint(c) ? "%c> " : "\\%03o> ", c); - dump_char_struct(ch, s); - } -#endif - - /* glBitmap()' parameters: - straight from the glXUseXFont(3) manpage. */ - width = ch->rbearing - ch->lbearing; - height = ch->ascent + ch->descent; - x0 = -ch->lbearing; - y0 = ch->descent - 0; /* XXX used to subtract 1 here */ - /* but that caused a conformace failure */ - dx = ch->width; - dy = 0; - - /* X11's starting point. */ - x = -ch->lbearing; - y = ch->ascent; - - /* Round the width to a multiple of eight. We will use this also - for the pixmap for capturing the X11 font. This is slightly - inefficient, but it makes the OpenGL part real easy. */ - bm_width = (width + 7) / 8; - bm_height = height; - - glNewList(list, GL_COMPILE); - if (valid && (bm_width > 0) && (bm_height > 0)) { - - MEMSET(bm, '\0', bm_width * bm_height); - fill_bitmap(dpy, win, gc, bm_width, bm_height, x, y, c, bm); - - glBitmap(width, height, x0, y0, dx, dy, bm); -#ifdef DEBUG - if (debug_xfonts) { - printf("width/height = %u/%u\n", width, height); - printf("bm_width/bm_height = %u/%u\n", bm_width, bm_height); - dump_bitmap(bm_width, bm_height, bm); - } -#endif - } - else { - glBitmap(0, 0, 0.0, 0.0, dx, dy, NULL); - } - glEndList(); - } - - FREE(bm); - XFreeFontInfo(NULL, fs, 1); - XFreeGC(dpy, gc); - - /* Restore saved packing modes. */ - glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes); - glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst); - glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength); - glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows); - glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels); - glPixelStorei(GL_UNPACK_ALIGNMENT, alignment); -} diff --git a/src/gallium/state_trackers/glx/xlib/glx_usefont.c b/src/gallium/state_trackers/glx/xlib/glx_usefont.c new file mode 100644 index 0000000000..45b91c850a --- /dev/null +++ b/src/gallium/state_trackers/glx/xlib/glx_usefont.c @@ -0,0 +1,376 @@ +/* + * Mesa 3-D graphics library + * Version: 7.6 + * + * Copyright (C) 1995 Thorsten.Ohl @ Physik.TH-Darmstadt.de + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * Fake implementation of glXUseXFont(). + * XXX rename this file to glx_usefont.c + */ + + +#include "context.h" +#include "imports.h" +#include + + +/* Some debugging info. */ + +#ifdef DEBUG +#undef _R +#undef _G +#undef _B +#include + +int debug_xfonts = 0; + +static void +dump_char_struct(XCharStruct * ch, char *prefix) +{ + printf("%slbearing = %d, rbearing = %d, width = %d\n", + prefix, ch->lbearing, ch->rbearing, ch->width); + printf("%sascent = %d, descent = %d, attributes = %u\n", + prefix, ch->ascent, ch->descent, (unsigned int) ch->attributes); +} + +static void +dump_font_struct(XFontStruct * font) +{ + printf("ascent = %d, descent = %d\n", font->ascent, font->descent); + printf("char_or_byte2 = (%u,%u)\n", + font->min_char_or_byte2, font->max_char_or_byte2); + printf("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1); + printf("all_chars_exist = %s\n", font->all_chars_exist ? "True" : "False"); + printf("default_char = %c (\\%03o)\n", + (char) (isprint(font->default_char) ? font->default_char : ' '), + font->default_char); + dump_char_struct(&font->min_bounds, "min> "); + dump_char_struct(&font->max_bounds, "max> "); +#if 0 + for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) { + char prefix[8]; + sprintf(prefix, "%d> ", c); + dump_char_struct(&font->per_char[c], prefix); + } +#endif +} + +static void +dump_bitmap(unsigned int width, unsigned int height, GLubyte * bitmap) +{ + unsigned int x, y; + + printf(" "); + for (x = 0; x < 8 * width; x++) + printf("%o", 7 - (x % 8)); + putchar('\n'); + for (y = 0; y < height; y++) { + printf("%3o:", y); + for (x = 0; x < 8 * width; x++) + putchar((bitmap[width * (height - y - 1) + x / 8] & (1 << (7 - (x % + 8)))) + ? '*' : '.'); + printf(" "); + for (x = 0; x < width; x++) + printf("0x%02x, ", bitmap[width * (height - y - 1) + x]); + putchar('\n'); + } +} +#endif /* DEBUG */ + + +/* Implementation. */ + +/* Fill a BITMAP with a character C from thew current font + in the graphics context GC. WIDTH is the width in bytes + and HEIGHT is the height in bits. + + Note that the generated bitmaps must be used with + + glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE); + glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE); + glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); + glPixelStorei (GL_UNPACK_SKIP_ROWS, 0); + glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0); + glPixelStorei (GL_UNPACK_ALIGNMENT, 1); + + Possible optimizations: + + * use only one reusable pixmap with the maximum dimensions. + * draw the entire font into a single pixmap (careful with + proportional fonts!). +*/ + + +/* + * Generate OpenGL-compatible bitmap. + */ +static void +fill_bitmap(Display * dpy, Window win, GC gc, + unsigned int width, unsigned int height, + int x0, int y0, unsigned int c, GLubyte * bitmap) +{ + XImage *image; + unsigned int x, y; + Pixmap pixmap; + XChar2b char2b; + + pixmap = XCreatePixmap(dpy, win, 8 * width, height, 1); + XSetForeground(dpy, gc, 0); + XFillRectangle(dpy, pixmap, gc, 0, 0, 8 * width, height); + XSetForeground(dpy, gc, 1); + + char2b.byte1 = (c >> 8) & 0xff; + char2b.byte2 = (c & 0xff); + + XDrawString16(dpy, pixmap, gc, x0, y0, &char2b, 1); + + image = XGetImage(dpy, pixmap, 0, 0, 8 * width, height, 1, XYPixmap); + if (image) { + /* Fill the bitmap (X11 and OpenGL are upside down wrt each other). */ + for (y = 0; y < height; y++) + for (x = 0; x < 8 * width; x++) + if (XGetPixel(image, x, y)) + bitmap[width * (height - y - 1) + x / 8] |= + (1 << (7 - (x % 8))); + XDestroyImage(image); + } + + XFreePixmap(dpy, pixmap); +} + +/* + * determine if a given glyph is valid and return the + * corresponding XCharStruct. + */ +static XCharStruct * +isvalid(XFontStruct * fs, unsigned int which) +{ + unsigned int rows, pages; + unsigned int byte1 = 0, byte2 = 0; + int i, valid = 1; + + rows = fs->max_byte1 - fs->min_byte1 + 1; + pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; + + if (rows == 1) { + /* "linear" fonts */ + if ((fs->min_char_or_byte2 > which) || (fs->max_char_or_byte2 < which)) + valid = 0; + } + else { + /* "matrix" fonts */ + byte2 = which & 0xff; + byte1 = which >> 8; + if ((fs->min_char_or_byte2 > byte2) || + (fs->max_char_or_byte2 < byte2) || + (fs->min_byte1 > byte1) || (fs->max_byte1 < byte1)) + valid = 0; + } + + if (valid) { + if (fs->per_char) { + if (rows == 1) { + /* "linear" fonts */ + return (fs->per_char + (which - fs->min_char_or_byte2)); + } + else { + /* "matrix" fonts */ + i = ((byte1 - fs->min_byte1) * pages) + + (byte2 - fs->min_char_or_byte2); + return (fs->per_char + i); + } + } + else { + return (&fs->min_bounds); + } + } + return (NULL); +} + + +void +glXUseXFont(Font font, int first, int count, int listbase) +{ + Display *dpy; + Window win; + Pixmap pixmap; + GC gc; + XGCValues values; + unsigned long valuemask; + XFontStruct *fs; + GLint swapbytes, lsbfirst, rowlength; + GLint skiprows, skippixels, alignment; + unsigned int max_width, max_height, max_bm_width, max_bm_height; + GLubyte *bm; + int i; + + dpy = glXGetCurrentDisplay(); + if (!dpy) + return; /* I guess glXMakeCurrent wasn't called */ + i = DefaultScreen(dpy); + win = RootWindow(dpy, i); + + fs = XQueryFont(dpy, font); + if (!fs) { + _mesa_error(NULL, GL_INVALID_VALUE, + "Couldn't get font structure information"); + return; + } + + /* Allocate a bitmap that can fit all characters. */ + max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing; + max_height = fs->max_bounds.ascent + fs->max_bounds.descent; + max_bm_width = (max_width + 7) / 8; + max_bm_height = max_height; + + bm = (GLubyte *) MALLOC((max_bm_width * max_bm_height) * sizeof(GLubyte)); + if (!bm) { + XFreeFontInfo(NULL, fs, 1); + _mesa_error(NULL, GL_OUT_OF_MEMORY, + "Couldn't allocate bitmap in glXUseXFont()"); + return; + } + +#if 0 + /* get the page info */ + pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; + firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2; + lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2; + rows = fs->max_byte1 - fs->min_byte1 + 1; + unsigned int first_char, last_char, pages, rows; +#endif + + /* Save the current packing mode for bitmaps. */ + glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes); + glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst); + glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength); + glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows); + glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels); + glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment); + + /* Enforce a standard packing mode which is compatible with + fill_bitmap() from above. This is actually the default mode, + except for the (non)alignment. */ + glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); + glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); + glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); + glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + pixmap = XCreatePixmap(dpy, win, 10, 10, 1); + values.foreground = BlackPixel(dpy, DefaultScreen(dpy)); + values.background = WhitePixel(dpy, DefaultScreen(dpy)); + values.font = fs->fid; + valuemask = GCForeground | GCBackground | GCFont; + gc = XCreateGC(dpy, pixmap, valuemask, &values); + XFreePixmap(dpy, pixmap); + +#ifdef DEBUG + if (debug_xfonts) + dump_font_struct(fs); +#endif + + for (i = 0; i < count; i++) { + unsigned int width, height, bm_width, bm_height; + GLfloat x0, y0, dx, dy; + XCharStruct *ch; + int x, y; + unsigned int c = first + i; + int list = listbase + i; + int valid; + + /* check on index validity and get the bounds */ + ch = isvalid(fs, c); + if (!ch) { + ch = &fs->max_bounds; + valid = 0; + } + else { + valid = 1; + } + +#ifdef DEBUG + if (debug_xfonts) { + char s[7]; + sprintf(s, isprint(c) ? "%c> " : "\\%03o> ", c); + dump_char_struct(ch, s); + } +#endif + + /* glBitmap()' parameters: + straight from the glXUseXFont(3) manpage. */ + width = ch->rbearing - ch->lbearing; + height = ch->ascent + ch->descent; + x0 = -ch->lbearing; + y0 = ch->descent - 0; /* XXX used to subtract 1 here */ + /* but that caused a conformace failure */ + dx = ch->width; + dy = 0; + + /* X11's starting point. */ + x = -ch->lbearing; + y = ch->ascent; + + /* Round the width to a multiple of eight. We will use this also + for the pixmap for capturing the X11 font. This is slightly + inefficient, but it makes the OpenGL part real easy. */ + bm_width = (width + 7) / 8; + bm_height = height; + + glNewList(list, GL_COMPILE); + if (valid && (bm_width > 0) && (bm_height > 0)) { + + MEMSET(bm, '\0', bm_width * bm_height); + fill_bitmap(dpy, win, gc, bm_width, bm_height, x, y, c, bm); + + glBitmap(width, height, x0, y0, dx, dy, bm); +#ifdef DEBUG + if (debug_xfonts) { + printf("width/height = %u/%u\n", width, height); + printf("bm_width/bm_height = %u/%u\n", bm_width, bm_height); + dump_bitmap(bm_width, bm_height, bm); + } +#endif + } + else { + glBitmap(0, 0, 0.0, 0.0, dx, dy, NULL); + } + glEndList(); + } + + FREE(bm); + XFreeFontInfo(NULL, fs, 1); + XFreeGC(dpy, gc); + + /* Restore saved packing modes. */ + glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes); + glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst); + glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength); + glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels); + glPixelStorei(GL_UNPACK_ALIGNMENT, alignment); +} -- cgit v1.2.3