Games/Quake/d_zpoint.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // d_zpoint.c: software driver module for drawing z-buffered points
  21
  22 #include "quakedef.h"
  23 #include "d_local.h"
  24
  25
  26 /*
  27 =====================
  28 D_DrawZPoint
  29 =====================
  30 */
  31 void D_DrawZPoint (void)
  32 {
  33         byte    *pdest;
  34         short   *pz;
  35         int             izi;
  36
  37         pz = d_pzbuffer + (d_zwidth * r_zpointdesc.v) + r_zpointdesc.u;
  38         pdest = d_viewbuffer + d_scantable[r_zpointdesc.v] + r_zpointdesc.u;
  39         izi = (int)(r_zpointdesc.zi * 0x8000);
  40
  41         if (*pz <= izi)
  42         {
  43                 *pz = izi;
  44                 *pdest = r_zpointdesc.color;
  45         }
  46 }
  47