1 /* $NetBSD: rasops8.c,v 1.51 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: rasops8.c,v 1.51 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 8
46 #include <dev/rasops/rasops.h>
47
48 static void rasops8_putchar(void *, int, int, u_int, long);
49 static void rasops8_putchar_aa(void *, int, int, u_int, long);
50 #ifndef RASOPS_SMALL
51 static void rasops8_putchar8(void *, int, int, u_int, long);
52 static void rasops8_putchar12(void *, int, int, u_int, long);
53 static void rasops8_putchar16(void *, int, int, u_int, long);
54 static void rasops8_makestamp(struct rasops_info *ri, long);
55 #endif
56
57 #ifndef RASOPS_SMALL
58 /* stamp for optimized character blitting */
59 static uint32_t stamp[16];
60 static long stamp_attr;
61 static struct rasops_info *stamp_ri;
62
63 /*
64 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
65 * destination = STAMP_READ(offset)
66 */
67 #define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 2 : (fb) << 2)
68 #define STAMP_MASK (0xf << 2)
69 #define STAMP_READ(o) (*(uint32_t *)((uint8_t *)stamp + (o)))
70 #endif
71
72 /*
73 * Initialize a 'rasops_info' descriptor for this depth.
74 */
75 void
rasops8_init(struct rasops_info * ri)76 rasops8_init(struct rasops_info *ri)
77 {
78
79 if (ri->ri_flg & RI_8BIT_IS_RGB) {
80 ri->ri_rnum = ri->ri_gnum = 3;
81 ri->ri_bnum = 2;
82
83 ri->ri_rpos = 5;
84 ri->ri_gpos = 2;
85 ri->ri_bpos = 0;
86 }
87
88 if (FONT_IS_ALPHA(ri->ri_font)) {
89 ri->ri_ops.putchar = rasops8_putchar_aa;
90 return;
91 }
92
93 switch (ri->ri_font->fontwidth) {
94 #ifndef RASOPS_SMALL
95 case 8:
96 ri->ri_ops.putchar = rasops8_putchar8;
97 break;
98 case 12:
99 ri->ri_ops.putchar = rasops8_putchar12;
100 break;
101 case 16:
102 ri->ri_ops.putchar = rasops8_putchar16;
103 break;
104 #endif /* !RASOPS_SMALL */
105 default:
106 ri->ri_ops.putchar = rasops8_putchar;
107 return;
108 }
109
110 #ifndef RASOPS_SMALL
111 stamp_attr = -1;
112 stamp_ri = NULL;
113 #endif
114 }
115
116 /* rasops8_putchar */
117 #undef RASOPS_AA
118 #include <dev/rasops/rasops_putchar.h>
119
120 /* rasops8_putchar_aa */
121 #define RASOPS_AA
122 #include <dev/rasops/rasops_putchar.h>
123 #undef RASOPS_AA
124
125 #ifndef RASOPS_SMALL
126 /*
127 * Recompute the blitting stamp.
128 */
129 static void
rasops8_makestamp(struct rasops_info * ri,long attr)130 rasops8_makestamp(struct rasops_info *ri, long attr)
131 {
132 int i;
133 uint32_t bg, fg;
134
135 stamp_attr = attr;
136 stamp_ri = ri;
137
138 bg = ATTR_BG(ri, attr) & 0xff;
139 fg = ATTR_FG(ri, attr) & 0xff;
140
141 for (i = 0; i < 16; i++) {
142 #if BYTE_ORDER == LITTLE_ENDIAN
143 if ((ri->ri_flg & RI_BSWAP) == 0)
144 #else
145 if ((ri->ri_flg & RI_BSWAP) != 0)
146 #endif
147 {
148 /* little endian */
149 stamp[i] = (i & 8 ? fg : bg);
150 stamp[i] |= (i & 4 ? fg : bg) << 8;
151 stamp[i] |= (i & 2 ? fg : bg) << 16;
152 stamp[i] |= (i & 1 ? fg : bg) << 24;
153 } else {
154 /* big endian */
155 stamp[i] = (i & 1 ? fg : bg);
156 stamp[i] |= (i & 2 ? fg : bg) << 8;
157 stamp[i] |= (i & 4 ? fg : bg) << 16;
158 stamp[i] |= (i & 8 ? fg : bg) << 24;
159 }
160 }
161 }
162
163 /*
164 * Width-optimized putchar functions
165 */
166 #define RASOPS_WIDTH 8
167 #include <dev/rasops/rasops_putchar_width.h>
168 #undef RASOPS_WIDTH
169
170 #define RASOPS_WIDTH 12
171 #include <dev/rasops/rasops_putchar_width.h>
172 #undef RASOPS_WIDTH
173
174 #define RASOPS_WIDTH 16
175 #include <dev/rasops/rasops_putchar_width.h>
176 #undef RASOPS_WIDTH
177
178 #endif /* !RASOPS_SMALL */
179