1/* $NetBSD: wscons_rinit.c,v 1.8 2018/09/03 16:29:34 riastradh Exp $ */
2
3/*
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 *	This product includes software developed by the University of
14 *	California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 *	@(#)rcons_font.c	8.1 (Berkeley) 6/11/93
41 */
42
43#include <sys/cdefs.h>
44__KERNEL_RCSID(0, "$NetBSD: wscons_rinit.c,v 1.8 2018/09/03 16:29:34 riastradh Exp $");
45
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/device.h>
49
50#include <dev/rcons/raster.h>
51#include <dev/wscons/wscons_raster.h>
52
53#include <dev/wscons/wscons_rfont.h>
54
55void	rcons_initfont(struct rcons *, struct raster_font *);
56
57void
58rcons_initfont(struct rcons *rc, struct raster_font *fp)
59{
60#if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
61	static int initfontdone;
62#endif
63
64	rc->rc_font = fp;
65
66	/* Get distance to top and bottom of font from font origin */
67	rc->rc_font_ascent = -(rc->rc_font->chars)['a'].homey;
68
69#if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
70	/* swap byte order on font data.  ick. */
71	if (!initfontdone) {
72		int ch, i, n, bit;
73		u_int32_t *pix, npix;
74
75		for (ch = 0; ch < 256; ch++) {
76			if (rc->rc_font->chars[ch].r == 0)
77				continue;
78
79			n = rc->rc_font->chars[ch].r->linelongs *
80			    rc->rc_font->chars[ch].r->height;
81			pix = rc->rc_font->chars[ch].r->pixels;
82
83			for (i = 0; i < n; i++) {
84				npix = 0;
85				for (bit = 0; bit < 32; bit++)
86					if (pix[i] & (1 << bit))
87						npix |= (1 << (31 - bit));
88				pix[i] = npix;
89			}
90		}
91	}
92
93	initfontdone = 1;
94#endif
95}
96
97void
98rcons_init(struct rcons *rc, int mrow, int mcol)
99{
100	struct raster *rp = rc->rc_sp;
101	int i;
102
103	rcons_initfont(rc, &gallant19);
104
105	i = rp->height / rc->rc_font->height;
106	rc->rc_maxrow = uimin(i, mrow);
107
108	i = rp->width / rc->rc_font->width;
109	rc->rc_maxcol = uimin(i, mcol);
110
111	/* Center emulator screen (but align x origin to 32 bits) */
112	rc->rc_xorigin =
113	    ((rp->width - rc->rc_maxcol * rc->rc_font->width) / 2) & ~0x1f;
114	rc->rc_yorigin =
115	    (rp->height - rc->rc_maxrow * rc->rc_font->height) / 2;
116
117	/* Raster width used for row copies */
118	rc->rc_raswidth = rc->rc_maxcol * rc->rc_font->width;
119	if (rc->rc_raswidth & 0x1f) {
120		/* Pad to 32 bits */
121		i = (rc->rc_raswidth + 0x1f) & ~0x1f;
122		/* Make sure width isn't too wide */
123		if (rc->rc_xorigin + i <= rp->width)
124			rc->rc_raswidth = i;
125	}
126
127	rc->rc_bits = 0;
128
129	/* If cursor position given, assume it's there and drawn. */
130	if (*rc->rc_crowp != -1 && *rc->rc_ccolp != -1)
131		rc->rc_bits |= RC_CURSOR;
132}
133