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