xref: /netbsd-src/sys/dev/rasops/rasops32.c (revision f48f7ada9d22e3ff89ebff44f0a21e8c445b5344)
1 /*	 $NetBSD: rasops32.c,v 1.46 2019/08/14 00:51:10 rin 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 Andrew 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  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.46 2019/08/14 00:51:10 rin Exp $");
34 
35 #ifdef _KERNEL_OPT
36 #include "opt_rasops.h"
37 #endif
38 
39 #include <sys/param.h>
40 
41 #include <dev/wscons/wsdisplayvar.h>
42 #include <dev/wscons/wsconsio.h>
43 
44 #define	_RASOPS_PRIVATE
45 #define	RASOPS_DEPTH	32
46 #include <dev/rasops/rasops.h>
47 
48 static void 	rasops32_putchar(void *, int, int, u_int, long);
49 static void 	rasops32_putchar_aa(void *, int, int, u_int, long);
50 #ifndef RASOPS_SMALL
51 static void	rasops32_putchar8(void *, int, int, u_int, long);
52 static void	rasops32_putchar12(void *, int, int, u_int, long);
53 static void	rasops32_putchar16(void *, int, int, u_int, long);
54 static void	rasops32_makestamp(struct rasops_info *, long);
55 #endif
56 
57 #ifndef RASOPS_SMALL
58 /* stamp for optimized character blitting */
59 static uint32_t			stamp[64];
60 static long			stamp_attr;
61 static struct rasops_info	*stamp_ri;
62 
63 /*
64  * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
65  * destination uint32_t[0] = STAMP_READ(offset)
66  * destination uint32_t[1] = STAMP_READ(offset +  4)
67  * destination uint32_t[2] = STAMP_READ(offset +  8)
68  * destination uint32_t[3] = STAMP_READ(offset + 12)
69  */
70 #define	STAMP_SHIFT(fb, n)	((n) ? (fb) : (fb) << 4)
71 #define	STAMP_MASK		(0xf << 4)
72 #define	STAMP_READ(o)		(*(uint32_t *)((uint8_t *)stamp + (o)))
73 #endif
74 
75 /*
76  * Initialize a 'rasops_info' descriptor for this depth.
77  */
78 void
rasops32_init(struct rasops_info * ri)79 rasops32_init(struct rasops_info *ri)
80 {
81 
82 	if (ri->ri_rnum == 0) {
83 		ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 8;
84 
85 		ri->ri_rpos = 0;
86 		ri->ri_gpos = 8;
87 		ri->ri_bpos = 16;
88 	}
89 
90 	if (FONT_IS_ALPHA(ri->ri_font)) {
91 		ri->ri_ops.putchar = rasops32_putchar_aa;
92 		return;
93 	}
94 
95 	switch (ri->ri_font->fontwidth) {
96 #ifndef RASOPS_SMALL
97 	case 8:
98 		ri->ri_ops.putchar = rasops32_putchar8;
99 		break;
100 	case 12:
101 		ri->ri_ops.putchar = rasops32_putchar12;
102 		break;
103 	case 16:
104 		ri->ri_ops.putchar = rasops32_putchar16;
105 		break;
106 #endif
107 	default:
108 		ri->ri_ops.putchar = rasops32_putchar;
109 		return;
110 	}
111 
112 #ifndef RASOPS_SMALL
113 	stamp_attr = -1;
114 	stamp_ri = NULL;
115 #endif
116 }
117 
118 /* rasops32_putchar */
119 #undef	RASOPS_AA
120 #include <dev/rasops/rasops_putchar.h>
121 
122 /* rasops32_putchar_aa */
123 #define	RASOPS_AA
124 #include <dev/rasops/rasops_putchar.h>
125 #undef	RASOPS_AA
126 
127 #ifndef RASOPS_SMALL
128 /*
129  * Recompute the blitting stamp.
130  */
131 static void
rasops32_makestamp(struct rasops_info * ri,long attr)132 rasops32_makestamp(struct rasops_info *ri, long attr)
133 {
134 	uint32_t fg, bg;
135 	int i;
136 
137 	stamp_attr = attr;
138 	stamp_ri = ri;
139 
140 	bg = ATTR_BG(ri, attr);
141 	fg = ATTR_FG(ri, attr);
142 
143 	for (i = 0; i < 64; i += 4) {
144 		stamp[i + 0] = i & 32 ? fg : bg;
145 		stamp[i + 1] = i & 16 ? fg : bg;
146 		stamp[i + 2] = i &  8 ? fg : bg;
147 		stamp[i + 3] = i &  4 ? fg : bg;
148 	}
149 }
150 
151 /*
152  * Width-optimized putchar functions
153  */
154 #define	RASOPS_WIDTH	8
155 #include <dev/rasops/rasops_putchar_width.h>
156 #undef	RASOPS_WIDTH
157 
158 #define	RASOPS_WIDTH	12
159 #include <dev/rasops/rasops_putchar_width.h>
160 #undef	RASOPS_WIDTH
161 
162 #define	RASOPS_WIDTH	16
163 #include <dev/rasops/rasops_putchar_width.h>
164 #undef	RASOPS_WIDTH
165 
166 #endif /* !RASOPS_SMALL */
167