1 /* $NetBSD: rasops15.c,v 1.39 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: rasops15.c,v 1.39 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 15
46 #include <dev/rasops/rasops.h>
47
48 static void rasops15_putchar(void *, int, int, u_int, long);
49 static void rasops15_putchar_aa(void *, int, int, u_int, long);
50 #ifndef RASOPS_SMALL
51 static void rasops15_putchar8(void *, int, int, u_int, long);
52 static void rasops15_putchar12(void *, int, int, u_int, long);
53 static void rasops15_putchar16(void *, int, int, u_int, long);
54 static void rasops15_makestamp(struct rasops_info *, long);
55 #endif
56
57 #ifndef RASOPS_SMALL
58 /* stamp for optimized character blitting */
59 static uint32_t stamp[32];
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 */
68 #define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 1: (fb) << 3)
69 #define STAMP_MASK (0xf << 3)
70 #define STAMP_READ(o) (*(uint32_t *)((uint8_t *)stamp + (o)))
71 #endif
72
73 /*
74 * Initialize rasops_info struct for this colordepth.
75 */
76 void
rasops15_init(struct rasops_info * ri)77 rasops15_init(struct rasops_info *ri)
78 {
79
80 if (ri->ri_rnum == 0) {
81 ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 5;
82 ri->ri_gnum += (ri->ri_depth == 16);
83
84 ri->ri_rpos = 10 + (ri->ri_depth == 16);
85 ri->ri_gpos = 5;
86 ri->ri_bpos = 0;
87 }
88
89 if (FONT_IS_ALPHA(ri->ri_font)) {
90 ri->ri_ops.putchar = rasops15_putchar_aa;
91 return;
92 }
93
94 switch (ri->ri_font->fontwidth) {
95 #ifndef RASOPS_SMALL
96 case 8:
97 ri->ri_ops.putchar = rasops15_putchar8;
98 break;
99 case 12:
100 ri->ri_ops.putchar = rasops15_putchar12;
101 break;
102 case 16:
103 ri->ri_ops.putchar = rasops15_putchar16;
104 break;
105 #endif /* !RASOPS_SMALL */
106 default:
107 ri->ri_ops.putchar = rasops15_putchar;
108 return;
109 }
110
111 #ifndef RASOPS_SMALL
112 stamp_attr = -1;
113 stamp_ri = NULL;
114 #endif
115 }
116
117 /* rasops15_putchar */
118 #undef RASOPS_AA
119 #include <dev/rasops/rasops_putchar.h>
120
121 /* rasops15_putchar_aa */
122 #define RASOPS_AA
123 #include <dev/rasops/rasops_putchar.h>
124 #undef RASOPS_AA
125
126 #ifndef RASOPS_SMALL
127 /*
128 * Recompute the 4x1 blitting stamp.
129 */
130 static void
rasops15_makestamp(struct rasops_info * ri,long attr)131 rasops15_makestamp(struct rasops_info *ri, long attr)
132 {
133 int i;
134 uint32_t bg, fg;
135
136 stamp_attr = attr;
137 stamp_ri = ri;
138
139 bg = ATTR_BG(ri, attr) & 0xffff;
140 fg = ATTR_FG(ri, attr) & 0xffff;
141
142 for (i = 0; i < 32; i += 2) {
143 #if BYTE_ORDER == LITTLE_ENDIAN
144 stamp[i] = (i & 16 ? fg : bg);
145 stamp[i] |= (i & 8 ? fg : bg) << 16;
146 stamp[i + 1] = (i & 4 ? fg : bg);
147 stamp[i + 1] |= (i & 2 ? fg : bg) << 16;
148 #else
149 stamp[i] = (i & 8 ? fg : bg);
150 stamp[i] |= (i & 16 ? fg : bg) << 16;
151 stamp[i + 1] = (i & 2 ? fg : bg);
152 stamp[i + 1] |= (i & 4 ? fg : bg) << 16;
153 #endif
154 }
155 }
156
157 /*
158 * Width-optimized putchar functions
159 */
160 #define RASOPS_WIDTH 8
161 #include <dev/rasops/rasops_putchar_width.h>
162 #undef RASOPS_WIDTH
163
164 #define RASOPS_WIDTH 12
165 #include <dev/rasops/rasops_putchar_width.h>
166 #undef RASOPS_WIDTH
167
168 #define RASOPS_WIDTH 16
169 #include <dev/rasops/rasops_putchar_width.h>
170 #undef RASOPS_WIDTH
171
172 #endif /* !RASOPS_SMALL */
173