quakeforge/libs/video/renderer/sw32/sw32_graph.c

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/*
sw32_graph.c
(description)
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] = "$Id$";
#define NH_DEFINE
#include "namehack.h"
#include "QF/cvar.h"
#include "QF/draw.h"
#include "QF/render.h"
#include "QF/sys.h"
#include "r_internal.h"
#include "vid_internal.h"
/*
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R_LineGraph
Called by only R_DisplayTime
*/
void
sw32_R_LineGraph (int x, int y, int *h_vals, int count)
{
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int h, i, s, color;
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// FIXME: disable on no-buffer adapters, or put in the driver
s = r_graphheight->int_val;
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while (count--) {
h = *h_vals++;
if (h == 10000)
color = 0x6f; // yellow
else if (h == 9999)
color = 0x4f; // red
else if (h == 9998)
color = 0xd0; // blue
else
color = 0xff; // pink
if (h > s)
h = s;
switch(sw32_r_pixbytes) {
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case 1:
{
byte *dest = (byte *) vid.buffer + vid.rowbytes * y + x;
for (i = 0; i < h; i++, dest -= vid.rowbytes * 2)
*dest = color;
}
break;
case 2:
{
short *dest = (short *) vid.buffer +
(vid.rowbytes >> 1) * y + x;
color = sw32_8to16table[color];
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for (i = 0; i < h; i++, dest -= vid.rowbytes)
*dest = color;
}
break;
case 4:
{
int *dest = (int *) vid.buffer +
(vid.rowbytes >> 2) * y + x;
color = d_8to24table[color];
for (i = 0; i < h; i++, dest -= (vid.rowbytes >> 1))
*dest = color;
}
break;
default:
Sys_Error("R_LineGraph: unsupported r_pixbytes %i",
sw32_r_pixbytes);
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}
}
}