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Initial checkin of software rendering bits and bobs.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@20 fc73d0e0-1445-4013-8a0c-d673dee63da5
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Spoike 2004-08-23 03:03:41 +00:00
parent 3a7c75319a
commit fffb8897b9
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53
engine/sw/d_zpoint.c Normal file
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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// d_zpoint.c: software driver module for drawing z-buffered points
#include "quakedef.h"
#include "d_local.h"
/*
=====================
D_DrawZPoint
=====================
*/
void D_DrawZPoint (void)
{
qbyte *pdest;
short *pz;
int izi;
pz = d_pzbuffer + (d_zwidth * r_zpointdesc.v) + r_zpointdesc.u;
pdest = d_viewbuffer + d_scantable[r_zpointdesc.v] + r_zpointdesc.u;
izi = (int)(r_zpointdesc.zi * 0x8000);
if (*pz <= izi)
{
*pz = izi;
*pdest = r_zpointdesc.color;
}
}
void D_ClearDepth(void)
{
memset(d_pzbuffer, 0, sizeof(*d_pzbuffer)*vid.width*vid.height);
}