rasops32.c revision 1.4 
1/*	 $NetBSD: rasops32.c,v 1.4 1999/05/18 21:51:59 ad Exp $ */
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andy Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the NetBSD
21 *	Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include "opt_rasops.h"
40#include <sys/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.4 1999/05/18 21:51:59 ad Exp $");
42
43#include <sys/types.h>
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/time.h>
47
48#include <dev/wscons/wsdisplayvar.h>
49#include <dev/wscons/wsconsio.h>
50#include <dev/rasops/rasops.h>
51
52static void 	rasops32_putchar __P((void *, int, int, u_int, long attr));
53void		rasops32_init __P((struct rasops_info *ri));
54
55
56/*
57 * Initalize a 'rasops_info' descriptor for this depth.
58 */
59void
60rasops32_init(ri)
61	struct rasops_info *ri;
62{
63
64	if (ri->ri_rnum == 0) {
65		ri->ri_rnum = 8;
66		ri->ri_rpos = 0;
67		ri->ri_gnum = 8;
68		ri->ri_gpos = 8;
69		ri->ri_bnum = 8;
70		ri->ri_bpos = 16;
71	}
72
73	ri->ri_ops.putchar = rasops32_putchar;
74}
75
76
77/*
78 * Paint a single character.
79 */
80static void
81rasops32_putchar(cookie, row, col, uc, attr)
82	void *cookie;
83	int row, col;
84	u_int uc;
85	long attr;
86{
87	struct rasops_info *ri;
88	int32_t *dp, *rp, clr[2];
89	u_char *fr;
90	int width, height, cnt, fs, fb;
91
92	ri = (struct rasops_info *)cookie;
93
94#ifdef RASOPS_CLIPPING
95	/* Catches 'row < 0' case too */
96	if ((unsigned)row >= (unsigned)ri->ri_rows)
97		return;
98
99	if ((unsigned)col >= (unsigned)ri->ri_cols)
100		return;
101#endif
102
103	rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
104
105	height = ri->ri_font->fontheight;
106	width = ri->ri_font->fontwidth;
107
108	clr[0] = ri->ri_devcmap[(attr >> 16) & 15];
109	clr[1] = ri->ri_devcmap[(attr >> 24) & 15];
110
111	if (uc == ' ') {
112		while (height--) {
113			dp = rp;
114			DELTA(rp, ri->ri_stride, int32_t *);
115
116			for (cnt = width; cnt; cnt--)
117				*dp++ = clr[0];
118		}
119	} else {
120		uc -= ri->ri_font->firstchar;
121		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
122		fs = ri->ri_font->stride;
123
124		while (height--) {
125			dp = rp;
126			fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
127			fr += fs;
128			DELTA(rp, ri->ri_stride, int32_t *);
129
130			for (cnt = width; cnt; cnt--) {
131				*dp++ = clr[(fb >> 31) & 1];
132				fb <<= 1;
133			}
134		}
135	}
136
137	/* Do underline */
138	if (attr & 1) {
139		DELTA(rp, -(ri->ri_stride << 1), int32_t *);
140
141		while (width--)
142			*rp++ = clr[1];
143	}
144}
145