rasops32.c revision 1.3 
1/*	 $NetBSD: rasops32.c,v 1.3 1999/04/26 04:27:47 ad Exp $ */
2
3/*
4 * Copyright (c) 1999 Andy Doran <ad@NetBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30#include "opt_rasops.h"
31#include <sys/cdefs.h>
32__KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.3 1999/04/26 04:27:47 ad Exp $");
33
34#include <sys/types.h>
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/time.h>
38
39#include <dev/wscons/wsdisplayvar.h>
40#include <dev/wscons/wsconsio.h>
41#include <dev/rasops/rasops.h>
42
43static void 	rasops32_putchar __P((void *, int, int, u_int, long attr));
44void		rasops32_init __P((struct rasops_info *ri));
45
46
47/*
48 * Initalize a 'rasops_info' descriptor for this depth.
49 */
50void
51rasops32_init(ri)
52	struct rasops_info *ri;
53{
54
55	if (ri->ri_rnum == 0) {
56		ri->ri_rnum = 8;
57		ri->ri_rpos = 0;
58		ri->ri_gnum = 8;
59		ri->ri_gpos = 8;
60		ri->ri_bnum = 8;
61		ri->ri_bpos = 16;
62	}
63
64	ri->ri_ops.putchar = rasops32_putchar;
65}
66
67
68/*
69 * Paint a single character.
70 */
71static void
72rasops32_putchar(cookie, row, col, uc, attr)
73	void *cookie;
74	int row, col;
75	u_int uc;
76	long attr;
77{
78	struct rasops_info *ri;
79	int32_t *dp, *rp, clr[2];
80	u_char *fr;
81	int width, height, cnt, fs, fb;
82
83	ri = (struct rasops_info *)cookie;
84
85#ifdef RASOPS_CLIPPING
86	/* Catches 'row < 0' case too */
87	if ((unsigned)row >= (unsigned)ri->ri_rows)
88		return;
89
90	if ((unsigned)col >= (unsigned)ri->ri_cols)
91		return;
92#endif
93
94	rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
95
96	height = ri->ri_font->fontheight;
97	width = ri->ri_font->fontwidth;
98
99	clr[0] = ri->ri_devcmap[(attr >> 16) & 15];
100	clr[1] = ri->ri_devcmap[(attr >> 24) & 15];
101
102	if (uc == ' ') {
103		while (height--) {
104			dp = rp;
105			DELTA(rp, ri->ri_stride, int32_t *);
106
107			for (cnt = width; cnt; cnt--)
108				*dp++ = clr[0];
109		}
110	} else {
111		uc -= ri->ri_font->firstchar;
112		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
113		fs = ri->ri_font->stride;
114
115		while (height--) {
116			dp = rp;
117			fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
118			fr += fs;
119			DELTA(rp, ri->ri_stride, int32_t *);
120
121			for (cnt = width; cnt; cnt--) {
122				*dp++ = clr[(fb >> 31) & 1];
123				fb <<= 1;
124			}
125		}
126	}
127
128	/* Do underline */
129	if (attr & 1) {
130		DELTA(rp, -(ri->ri_stride << 1), int32_t *);
131
132		while (width--)
133			*rp++ = clr[1];
134	}
135}
136