mirror of
https://git.code.sf.net/p/quake/quakeforge
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70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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d_zpoint.c
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software driver module for drawing z-buffered points
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] =
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"$Id$";
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#include "QF/sys.h"
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#include "d_local.h"
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void
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D_DrawZPoint (void)
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{
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short *pz;
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int izi;
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pz = d_pzbuffer + (d_zwidth * r_zpointdesc.v) + r_zpointdesc.u;
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izi = (int) (r_zpointdesc.zi * 0x8000);
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if (*pz <= izi) {
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*pz = izi;
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switch(r_pixbytes)
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{
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case 1:
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((byte *) d_viewbuffer) [d_scantable[r_zpointdesc.v] +
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r_zpointdesc.u] = r_zpointdesc.color;
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break;
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case 2:
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((short *) d_viewbuffer) [d_scantable[r_zpointdesc.v] +
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r_zpointdesc.u] =
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d_8to16table[r_zpointdesc.color];
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break;
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case 4:
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((int *) d_viewbuffer) [d_scantable[r_zpointdesc.v] +
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r_zpointdesc.u] =
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d_8to24table[r_zpointdesc.color];
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break;
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default:
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Sys_Error("D_DrawZPoint: unsupported r_pixbytes %i", r_pixbytes);
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}
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}
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}
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