1/* $NetBSD: rasops2.c,v 1.18 2013/04/21 04:28:05 kiyohara 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: rasops2.c,v 1.18 2013/04/21 04:28:05 kiyohara Exp $");
34
35#include "opt_rasops.h"
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/time.h>
40#include <machine/endian.h>
41
42#include <dev/wscons/wsdisplayvar.h>
43#include <dev/wscons/wsconsio.h>
44#include <dev/rasops/rasops.h>
45#include <dev/rasops/rasops_masks.h>
46
47static void rasops2_copycols(void *, int, int, int, int);
48static void rasops2_erasecols(void *, int, int, int, long);
49static void rasops2_do_cursor(struct rasops_info *);
50static void rasops2_putchar(void *, int, int col, u_int, long);
51#ifndef RASOPS_SMALL
52static void rasops2_putchar8(void *, int, int col, u_int, long);
53static void rasops2_putchar12(void *, int, int col, u_int, long);
54static void rasops2_putchar16(void *, int, int col, u_int, long);
55static void rasops2_makestamp(struct rasops_info *, long);
56
57/*
58 * 4x1 stamp for optimized character blitting
59 */
60static int8_t stamp[16];
61static long stamp_attr;
62static int stamp_mutex; /* XXX see note in README */
63#endif
64
65/*
66 * Initialize rasops_info struct for this colordepth.
67 */
68void
69rasops2_init(struct rasops_info *ri)
70{
71
72 switch (ri->ri_font->fontwidth) {
73#ifndef RASOPS_SMALL
74 case 8:
75 ri->ri_ops.putchar = rasops2_putchar8;
76 break;
77 case 12:
78 ri->ri_ops.putchar = rasops2_putchar12;
79 break;
80 case 16:
81 ri->ri_ops.putchar = rasops2_putchar16;
82 break;
83#endif /* !RASOPS_SMALL */
84 default:
85 panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!");
86 ri->ri_ops.putchar = rasops2_putchar;
87 break;
88 }
89
90 if ((ri->ri_font->fontwidth & 3) != 0) {
91 ri->ri_ops.erasecols = rasops2_erasecols;
92 ri->ri_ops.copycols = rasops2_copycols;
93 ri->ri_do_cursor = rasops2_do_cursor;
94 }
95}
96
97#ifdef notyet
98/*
99 * Paint a single character. This is the generic version, this is ugly.
100 */
101static void
102rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr)
103{
104 int height, width, fs, rs, fb, bg, fg, lmask, rmask;
105 struct rasops_info *ri = (struct rasops_info *)cookie;
106 struct wsdisplay_font *font = PICK_FONT(ri, uc);
107 int32_t *rp;
108 u_char *fr;
109
110#ifdef RASOPS_CLIPPING
111 /* Catches 'row < 0' case too */
112 if ((unsigned)row >= (unsigned)ri->ri_rows)
113 return;
114
115 if ((unsigned)col >= (unsigned)ri->ri_cols)
116 return;
117#endif
118
119 width = font->fontwidth << 1;
120 height = font->fontheight;
121 col *= width;
122 rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
123 col = col & 31;
124 rs = ri->ri_stride;
125
126 bg = ri->ri_devcmap[(attr >> 16) & 0xf];
127 fg = ri->ri_devcmap[(attr >> 24) & 0xf];
128
129 /* If fg and bg match this becomes a space character */
130 if (fg == bg || uc == ' ') {
131 uc = (u_int)-1;
132 fr = 0; /* shutup gcc */
133 fs = 0; /* shutup gcc */
134 } else {
135 uc -= font->firstchar;
136 fr = (u_char *)font->data + uc * ri->ri_fontscale;
137 fs = font->stride;
138 }
139
140 /* Single word, one mask */
141 if ((col + width) <= 32) {
142 rmask = rasops_pmask[col][width];
143 lmask = ~rmask;
144
145 if (uc == (u_int)-1) {
146 bg &= rmask;
147
148 while (height--) {
149 *rp = (*rp & lmask) | bg;
150 DELTA(rp, rs, int32_t *);
151 }
152 } else {
153 while (height--) {
154 /* get bits, mask */
155 /* compose sl */
156 /* mask sl */
157 /* put word */
158 }
159 }
160
161 /* Do underline */
162 if (attr & 1) {
163 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
164 *rp = (*rp & lmask) | (fg & rmask);
165 }
166 } else {
167 lmask = ~rasops_lmask[col];
168 rmask = ~rasops_rmask[(col + width) & 31];
169
170 if (uc == (u_int)-1) {
171 bg = bg & ~lmask;
172 width = bg & ~rmask;
173
174 while (height--) {
175 rp[0] = (rp[0] & lmask) | bg;
176 rp[1] = (rp[1] & rmask) | width;
177 DELTA(rp, rs, int32_t *);
178 }
179 } else {
180 width = 32 - col;
181
182 /* NOT fontbits if bg is white */
183 while (height--) {
184 fb = ~(fr[3] | (fr[2] << 8) |
185 (fr[1] << 16) | (fr[0] << 24));
186
187 rp[0] = (rp[0] & lmask)
188 | MBE((u_int)fb >> col);
189
190 rp[1] = (rp[1] & rmask)
191 | (MBE((u_int)fb << width) & ~rmask);
192
193 fr += fs;
194 DELTA(rp, rs, int32_t *);
195 }
196 }
197
198 /* Do underline */
199 if (attr & 1) {
200 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
201 rp[0] = (rp[0] & lmask) | (fg & ~lmask);
202 rp[1] = (rp[1] & rmask) | (fg & ~rmask);
203 }
204 }
205}
206#endif
207
208/*
209 * Put a single character. This is the generic version.
210 */
211static void
212rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr)
213{
214
215 /* XXX punt */
216}
217
218#ifndef RASOPS_SMALL
219/*
220 * Recompute the blitting stamp.
221 */
222static void
223rasops2_makestamp(struct rasops_info *ri, long attr)
224{
225 int i, fg, bg;
226
227 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 3;
228 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 3;
229 stamp_attr = attr;
230
231 for (i = 0; i < 16; i++) {
232#if BYTE_ORDER == BIG_ENDIAN
233#define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP
234#else
235#define NEED_LITTLE_ENDIAN_STAMP 0
236#endif
237 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) {
238 /* littel endian */
239 stamp[i] = (i & 8 ? fg : bg);
240 stamp[i] |= (i & 4 ? fg : bg) << 2;
241 stamp[i] |= (i & 2 ? fg : bg) << 4;
242 stamp[i] |= (i & 1 ? fg : bg) << 6;
243 } else {
244 /* big endian */
245 stamp[i] = (i & 1 ? fg : bg);
246 stamp[i] |= (i & 2 ? fg : bg) << 2;
247 stamp[i] |= (i & 4 ? fg : bg) << 4;
248 stamp[i] |= (i & 8 ? fg : bg) << 6;
249 }
250 }
251}
252
253/*
254 * Put a single character. This is for 8-pixel wide fonts.
255 */
256static void
257rasops2_putchar8(void *cookie, int row, int col, u_int uc, long attr)
258{
259 struct rasops_info *ri = (struct rasops_info *)cookie;
260 struct wsdisplay_font *font = PICK_FONT(ri, uc);
261 int height, fs, rs;
262 u_char *fr, *rp;
263
264 /* Can't risk remaking the stamp if it's already in use */
265 if (stamp_mutex++) {
266 stamp_mutex--;
267 rasops2_putchar(cookie, row, col, uc, attr);
268 return;
269 }
270
271#ifdef RASOPS_CLIPPING
272 /* Catches 'row < 0' case too */
273 if ((unsigned)row >= (unsigned)ri->ri_rows) {
274 stamp_mutex--;
275 return;
276 }
277
278 if ((unsigned)col >= (unsigned)ri->ri_cols) {
279 stamp_mutex--;
280 return;
281 }
282#endif
283
284 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
285 height = font->fontheight;
286 rs = ri->ri_stride;
287
288 /* Recompute stamp? */
289 if (attr != stamp_attr)
290 rasops2_makestamp(ri, attr);
291
292 if (uc == ' ') {
293 int8_t c = stamp[0];
294 while (height--) {
295 *(int16_t *)rp = c;
296 rp += rs;
297 }
298 } else {
299 uc -= font->firstchar;
300 fr = (u_char *)font->data + uc * ri->ri_fontscale;
301 fs = font->stride;
302
303 while (height--) {
304 rp[0] = stamp[(*fr >> 4) & 0xf];
305 rp[1] = stamp[*fr & 0xf];
306 fr += fs;
307 rp += rs;
308 }
309 }
310
311 /* Do underline */
312 if ((attr & 1) != 0)
313 *(int16_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
314
315 stamp_mutex--;
316}
317
318/*
319 * Put a single character. This is for 12-pixel wide fonts.
320 */
321static void
322rasops2_putchar12(void *cookie, int row, int col, u_int uc, long attr)
323{
324 struct rasops_info *ri = (struct rasops_info *)cookie;
325 struct wsdisplay_font *font = PICK_FONT(ri, uc);
326 int height, fs, rs;
327 u_char *fr, *rp;
328
329 /* Can't risk remaking the stamp if it's already in use */
330 if (stamp_mutex++) {
331 stamp_mutex--;
332 rasops2_putchar(cookie, row, col, uc, attr);
333 return;
334 }
335
336#ifdef RASOPS_CLIPPING
337 /* Catches 'row < 0' case too */
338 if ((unsigned)row >= (unsigned)ri->ri_rows) {
339 stamp_mutex--;
340 return;
341 }
342
343 if ((unsigned)col >= (unsigned)ri->ri_cols) {
344 stamp_mutex--;
345 return;
346 }
347#endif
348
349 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
350 height = font->fontheight;
351 rs = ri->ri_stride;
352
353 /* Recompute stamp? */
354 if (attr != stamp_attr)
355 rasops2_makestamp(ri, attr);
356
357 if (uc == ' ') {
358 int8_t c = stamp[0];
359 while (height--) {
360 rp[0] = rp[1] = rp[2] = c;
361 rp += rs;
362 }
363 } else {
364 uc -= font->firstchar;
365 fr = (u_char *)font->data + uc * ri->ri_fontscale;
366 fs = font->stride;
367
368 while (height--) {
369 rp[0] = stamp[(fr[0] >> 4) & 0xf];
370 rp[1] = stamp[fr[0] & 0xf];
371 rp[2] = stamp[(fr[1] >> 4) & 0xf];
372 fr += fs;
373 rp += rs;
374 }
375 }
376
377 /* Do underline */
378 if ((attr & 1) != 0) {
379 rp -= ri->ri_stride << 1;
380 rp[0] = rp[1] = rp[2] = stamp[15];
381 }
382
383 stamp_mutex--;
384}
385
386/*
387 * Put a single character. This is for 16-pixel wide fonts.
388 */
389static void
390rasops2_putchar16(void *cookie, int row, int col, u_int uc, long attr)
391{
392 struct rasops_info *ri = (struct rasops_info *)cookie;
393 struct wsdisplay_font *font = PICK_FONT(ri, uc);
394 int height, fs, rs;
395 u_char *fr, *rp;
396
397 /* Can't risk remaking the stamp if it's already in use */
398 if (stamp_mutex++) {
399 stamp_mutex--;
400 rasops2_putchar(cookie, row, col, uc, attr);
401 return;
402 }
403
404#ifdef RASOPS_CLIPPING
405 /* Catches 'row < 0' case too */
406 if ((unsigned)row >= (unsigned)ri->ri_rows) {
407 stamp_mutex--;
408 return;
409 }
410
411 if ((unsigned)col >= (unsigned)ri->ri_cols) {
412 stamp_mutex--;
413 return;
414 }
415#endif
416
417 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
418 height = font->fontheight;
419 rs = ri->ri_stride;
420
421 /* Recompute stamp? */
422 if (attr != stamp_attr)
423 rasops2_makestamp(ri, attr);
424
425 if (uc == ' ') {
426 int8_t c = stamp[0];
427 while (height--) {
428 *(int32_t *)rp = c;
429 rp += rs;
430 }
431 } else {
432 uc -= font->firstchar;
433 fr = (u_char *)font->data + uc * ri->ri_fontscale;
434 fs = font->stride;
435
436 while (height--) {
437 rp[0] = stamp[(fr[0] >> 4) & 0xf];
438 rp[1] = stamp[fr[0] & 0xf];
439 rp[2] = stamp[(fr[1] >> 4) & 0xf];
440 rp[3] = stamp[fr[1] & 0xf];
441 fr += fs;
442 rp += rs;
443 }
444 }
445
446 /* Do underline */
447 if ((attr & 1) != 0)
448 *(int32_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
449
450 stamp_mutex--;
451}
452#endif /* !RASOPS_SMALL */
453
454/*
455 * Grab routines common to depths where (bpp < 8)
456 */
457#define NAME(ident) rasops2_##ident
458#define PIXEL_SHIFT 1
459
460#include <dev/rasops/rasops_bitops.h>
461