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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* vga.c - driver for VGA graphics adaptor under MS-DOS |
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*/ |
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#include <stdio.h> |
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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#include "standard.h" |
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#include <graph.h> |
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#include "driver.h" |
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#define GAMMA 2.2 /* exponent for color correction */ |
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int vga_close(), vga_clear(), vga_paintr(), vga_comout(), vga_comin(); |
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int vga_close(), vga_clear(), vga_paintr(), vga_comout(), vga_errout(), |
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vga_comin(); |
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static struct driver vga_driver = { |
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vga_close, vga_clear, vga_paintr, NULL, |
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vga_comout, vga_comin, NULL |
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vga_comout, vga_comin, NULL, 1.0 |
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}; |
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static char fatalerr[128]; |
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static struct videoconfig config; |
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extern char *getenv(); |
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struct driver * |
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vga_init(name, id) /* open VGA */ |
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char *name, *id; |
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{ |
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if (_setvideomode(_MRES256COLOR) == 0) |
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static short mode_pref[] = {_MRES256COLOR, -1}; |
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static short smode_pref[] = {_XRES256COLOR, _SVRES256COLOR, |
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_VRES256COLOR, _MRES256COLOR, -1}; |
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char *ep; |
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register short *mp; |
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|
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mp = !strcmp(name, "vga") ? mode_pref : smode_pref; |
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for ( ; *mp != -1; mp++) |
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if (_setvideomode(*mp)) |
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break; |
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if (*mp == -1) { |
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_setvideomode(_DEFAULTMODE); |
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eputs(name); |
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eputs(": card not present or insufficient VGA memory\n"); |
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return(NULL); |
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} |
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_getvideoconfig(&config); |
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_settextwindow(config.numtextrows-2, 1, |
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config.numtextrows, config.numtextcols); |
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vga_driver.xsiz = config.numxpixels; |
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vga_driver.ysiz = config.numypixels*(config.numtextrows-3) |
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vga_driver.ysiz = (long)config.numypixels*(config.numtextrows-3) |
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/config.numtextrows; |
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vga_driver.pixaspect = .75*config.numxpixels/config.numypixels; |
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switch (config.mode) { /* correct problems */ |
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case _XRES256COLOR: |
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vga_driver.ysiz -= 16; |
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break; |
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case _MRES256COLOR: |
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vga_driver.pixaspect = 1.2; |
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break; |
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} |
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_setviewport(0, 0, vga_driver.xsiz, vga_driver.ysiz); |
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make_gmap(GAMMA); /* make color map */ |
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_remappalette(1, 0x303030L); |
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if ((ep = getenv("GAMMA")) != NULL) /* make gamma map */ |
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make_gmap(atof(ep)); |
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else |
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make_gmap(GAMMA); |
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_remappalette(1, _BRIGHTWHITE); |
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_settextcolor(1); |
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errvec = vga_comout; |
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cmdvec = vga_comout; |
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if (wrnvec != NULL) |
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wrnvec = vga_comout; |
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ms_gcinit(&vga_driver); |
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erract[USER].pf = |
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erract[SYSTEM].pf = |
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erract[INTERNAL].pf = |
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erract[CONSISTENCY].pf = vga_errout; |
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erract[COMMAND].pf = vga_comout; |
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if (erract[WARNING].pf != NULL) |
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erract[WARNING].pf = vga_comout; |
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return(&vga_driver); |
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} |
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static |
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vga_close() /* close VGA */ |
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{ |
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errvec = stderr_v; /* reset error vector */ |
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cmdvec = NULL; |
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if (wrnvec != NULL) |
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wrnvec = stderr_v; |
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ms_gcdone(&vga_driver); |
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_setvideomode(_DEFAULTMODE); |
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erract[USER].pf = /* reset error vector */ |
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erract[SYSTEM].pf = |
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erract[INTERNAL].pf = |
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erract[CONSISTENCY].pf = eputs; |
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erract[COMMAND].pf = NULL; |
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if (erract[WARNING].pf != NULL) |
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erract[WARNING].pf = wputs; |
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if (fatalerr[0]) |
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eputs(fatalerr); /* repeat error message */ |
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} |
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if (*s == '\0') |
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break; |
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tpos = _gettextposition(); |
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_settextposition(tpos.row, *s=='\r' ? 0 : tpos.col-1); |
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_settextposition(tpos.row, *s=='\r' ? 1 : tpos.col-1); |
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continue; |
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default: |
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*cp++ = *s; |
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} |
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return(0); |
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} |
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fatalerr[0] = '\0'; |
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} |
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|
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|
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static |
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vga_errout(msg) |
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register char *msg; |
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{ |
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static char *fep = fatalerr; |
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|
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_outtext(msg); |
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while (*msg) |
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*fep++ = *msg++; |
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*fep = '\0'; |
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if (fep > fatalerr && fep[-1] == '\n') |
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fep = fatalerr; |
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} |
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