1 /* $NetBSD: rasops1.c,v 1.37 2019/08/10 01:24:17 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: rasops1.c,v 1.37 2019/08/10 01:24:17 rin Exp $");
34
35 #ifdef _KERNEL_OPT
36 #include "opt_rasops.h"
37 #endif
38
39 #include <sys/param.h>
40
41 #include <machine/endian.h>
42
43 #include <dev/wscons/wsdisplayvar.h>
44 #include <dev/wscons/wsconsio.h>
45
46 #define _RASOPS_PRIVATE
47 #define RASOPS_DEPTH 1
48 #include <dev/rasops/rasops.h>
49 #include <dev/rasops/rasops_masks.h>
50
51 static void rasops1_copycols(void *, int, int, int, int);
52 static void rasops1_erasecols(void *, int, int, int, long);
53 static void rasops1_do_cursor(struct rasops_info *);
54 static void rasops1_putchar(void *, int, int col, u_int, long);
55 #ifndef RASOPS_SMALL
56 static void rasops1_putchar8(void *, int, int col, u_int, long);
57 static void rasops1_putchar16(void *, int, int col, u_int, long);
58 #endif
59
60 /*
61 * Initialize rasops_info struct for this colordepth.
62 */
63 void
rasops1_init(struct rasops_info * ri)64 rasops1_init(struct rasops_info *ri)
65 {
66
67 if ((ri->ri_font->fontwidth & 7) != 0) {
68 ri->ri_ops.erasecols = rasops1_erasecols;
69 ri->ri_ops.copycols = rasops1_copycols;
70 ri->ri_do_cursor = rasops1_do_cursor;
71 }
72
73 switch (ri->ri_font->fontwidth) {
74 #ifndef RASOPS_SMALL
75 case 8:
76 ri->ri_ops.putchar = rasops1_putchar8;
77 break;
78 case 16:
79 ri->ri_ops.putchar = rasops1_putchar16;
80 break;
81 #endif
82 default:
83 ri->ri_ops.putchar = rasops1_putchar;
84 break;
85 }
86 }
87
88 /*
89 * Paint a single character. This is the generic version, this is ugly.
90 */
91 static void
rasops1_putchar(void * cookie,int row,int col,u_int uc,long attr)92 rasops1_putchar(void *cookie, int row, int col, u_int uc, long attr)
93 {
94 struct rasops_info *ri = (struct rasops_info *)cookie;
95 struct wsdisplay_font *font = PICK_FONT(ri, uc);
96 int height, width;
97 uint32_t bg, fg, lbg, rbg, fb, lmask, rmask, tmp, tmp0, tmp1;
98 uint32_t *rp, *hp;
99 uint8_t *fr;
100 bool space;
101
102 hp = NULL; /* XXX GCC */
103
104 if (__predict_false(!CHAR_IN_FONT(uc, font)))
105 return;
106
107 #ifdef RASOPS_CLIPPING
108 /* Catches 'row < 0' case too */
109 if ((unsigned)row >= (unsigned)ri->ri_rows)
110 return;
111
112 if ((unsigned)col >= (unsigned)ri->ri_cols)
113 return;
114 #endif
115
116 height = font->fontheight;
117 width = font->fontwidth;
118 col *= width;
119
120 rp = (uint32_t *)(ri->ri_bits + row * ri->ri_yscale +
121 ((col >> 3) & ~3));
122 if (ri->ri_hwbits)
123 hp = (uint32_t *)(ri->ri_hwbits + row * ri->ri_yscale +
124 ((col >> 3) & ~3));
125
126 col &= 31;
127
128 bg = ATTR_BG(ri, attr);
129 fg = ATTR_FG(ri, attr);
130
131 /* If fg and bg match this becomes a space character */
132 if (uc == ' ' || __predict_false(fg == bg)) {
133 space = true;
134 fr = NULL; /* XXX GCC */
135 } else {
136 space = false;
137 fr = FONT_GLYPH(uc, font, ri);
138 }
139
140 if (col + width <= 32) {
141 /* Single word, only one mask */
142 rmask = rasops_pmask[col][width & 31];
143 lmask = ~rmask;
144
145 if (space) {
146 bg &= rmask;
147 while (height--) {
148 tmp = (*rp & lmask) | bg;
149 *rp = tmp;
150 if (ri->ri_hwbits) {
151 *hp = tmp;
152 DELTA(hp, ri->ri_stride, uint32_t *);
153 }
154 DELTA(rp, ri->ri_stride, uint32_t *);
155 }
156 } else {
157 while (height--) {
158 fb = rasops_be32uatoh(fr);
159 fr += font->stride;
160 if (bg)
161 fb = ~fb;
162
163 tmp = *rp & lmask;
164 tmp |= (MBE(fb >> col) & rmask);
165 *rp = tmp;
166
167 if (ri->ri_hwbits) {
168 *hp = tmp;
169 DELTA(hp, ri->ri_stride, uint32_t *);
170 }
171
172 DELTA(rp, ri->ri_stride, uint32_t *);
173 }
174 }
175
176 /* Do underline */
177 if ((attr & WSATTR_UNDERLINE) != 0) {
178 DELTA(rp, - ri->ri_stride * ri->ri_ul.off, uint32_t *);
179 if (ri->ri_hwbits)
180 DELTA(hp, - ri->ri_stride * ri->ri_ul.off,
181 uint32_t *);
182
183 for (height = ri->ri_ul.height; height; height--) {
184 DELTA(rp, - ri->ri_stride, uint32_t *);
185 tmp = (*rp & lmask) | (fg & rmask);
186 *rp = tmp;
187 if (ri->ri_hwbits) {
188 DELTA(hp, - ri->ri_stride, uint32_t *);
189 *hp = tmp;
190 }
191 }
192 }
193 } else {
194 /* Word boundary, two masks needed */
195 lmask = ~rasops_lmask[col];
196 rmask = ~rasops_rmask[(col + width) & 31];
197
198 if (space) {
199 lbg = bg & ~lmask;
200 rbg = bg & ~rmask;
201
202 while (height--) {
203 tmp0 = (rp[0] & lmask) | lbg;
204 tmp1 = (rp[1] & rmask) | rbg;
205
206 rp[0] = tmp0;
207 rp[1] = tmp1;
208
209 if (ri->ri_hwbits) {
210 hp[0] = tmp0;
211 hp[1] = tmp1;
212 DELTA(hp, ri->ri_stride, uint32_t *);
213 }
214
215 DELTA(rp, ri->ri_stride, uint32_t *);
216 }
217 } else {
218 width = 32 - col;
219
220 while (height--) {
221 fb = rasops_be32uatoh(fr);
222 fr += font->stride;
223 if (bg)
224 fb = ~fb;
225
226 tmp0 = rp[0] & lmask;
227 tmp0 |= MBE(fb >> col);
228
229 tmp1 = rp[1] & rmask;
230 tmp1 |= (MBE(fb << width) & ~rmask);
231
232 rp[0] = tmp0;
233 rp[1] = tmp1;
234
235 if (ri->ri_hwbits) {
236 hp[0] = tmp0;
237 hp[1] = tmp1;
238 DELTA(hp, ri->ri_stride, uint32_t *);
239 }
240
241 DELTA(rp, ri->ri_stride, uint32_t *);
242 }
243 }
244
245 /* Do underline */
246 if ((attr & WSATTR_UNDERLINE) != 0) {
247 DELTA(rp, - ri->ri_stride * ri->ri_ul.off, uint32_t *);
248 if (ri->ri_hwbits)
249 DELTA(hp, - ri->ri_stride * ri->ri_ul.off,
250 uint32_t *);
251
252 for (height = ri->ri_ul.height; height; height--) {
253 DELTA(rp, - ri->ri_stride, uint32_t *);
254 tmp0 = (rp[0] & lmask) | (fg & ~lmask);
255 tmp1 = (rp[1] & rmask) | (fg & ~rmask);
256 rp[0] = tmp0;
257 rp[1] = tmp1;
258 if (ri->ri_hwbits) {
259 DELTA(hp, - ri->ri_stride, uint32_t *);
260 hp[0] = tmp0;
261 hp[1] = tmp1;
262 }
263 }
264 }
265 }
266 }
267
268 #ifndef RASOPS_SMALL
269 /*
270 * Width-optimized putchar functions
271 */
272 #define RASOPS_WIDTH 8
273 #include <dev/rasops/rasops1_putchar_width.h>
274 #undef RASOPS_WIDTH
275
276 #define RASOPS_WIDTH 16
277 #include <dev/rasops/rasops1_putchar_width.h>
278 #undef RASOPS_WIDTH
279
280 #endif /* !RASOPS_SMALL */
281
282 /*
283 * Grab routines common to depths where (bpp < 8)
284 */
285 #include <dev/rasops/rasops_bitops.h>
286