diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/xfont.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/xfont.c | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/xfont.c b/nx-X11/extras/Mesa/src/glx/x11/xfont.c deleted file mode 100644 index 5f23a7962..000000000 --- a/nx-X11/extras/Mesa/src/glx/x11/xfont.c +++ /dev/null @@ -1,377 +0,0 @@ -/* $XFree86: xc/lib/GL/glx/xfont.c,v 1.6 2001/05/02 15:06:02 dawes Exp $ */ -/* - * Mesa 3-D graphics library - * Version: 3.1 - * - * Copyright (C) 1999 Brian Paul 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. - */ - - -/* xfonts.c -- glXUseXFont() for Mesa written by - * Copyright (C) 1995 Thorsten.Ohl @ Physik.TH-Darmstadt.de - */ - -/* - This was take from Mesa and modified to work in the real GLX structure. - It provides a fully client side implementation of glXUseXFont and is - called by that routine when direct rendering is enabled. -*/ - - -#include "glxclient.h" - -/* Some debugging info. */ - -#ifdef DEBUG -#undef _R -#undef _G -#undef _B -#include <ctype.h> - -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, int which) -{ - unsigned int rows,pages; - 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 DRI_glXUseXFont( Font font, int first, int count, int listbase ) -{ - GLXContext CC; - 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; - - CC = __glXGetCurrentContext(); - dpy = CC->currentDpy; - win = CC->currentDrawable; - - fs = XQueryFont (dpy, font); - if (!fs) - { - __glXSetError(CC, GL_INVALID_VALUE); - 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 *) Xmalloc((max_bm_width * max_bm_height) * sizeof -(GLubyte)); - if (!bm) { - XFreeFontInfo( NULL, fs, 1 ); - __glXSetError(CC, GL_OUT_OF_MEMORY); - 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 - 1; - 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 (); - } - - Xfree(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); -} - -/* The End. */ |