rasops2.c revision 1.24 
1/* 	$NetBSD: rasops2.c,v 1.24 2019/07/28 02:51:38 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: rasops2.c,v 1.24 2019/07/28 02:51:38 rin 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 uint8_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	uint32_t *rp;
108	uint8_t *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 = (uint32_t *)(ri->ri_bits + row * ri->ri_yscale +
123	    ((col >> 3) & ~3));
124	col = col & 31;
125	rs = ri->ri_stride;
126
127	bg = ri->ri_devcmap[(attr >> 16) & 0xf];
128	fg = ri->ri_devcmap[(attr >> 24) & 0xf];
129
130	/* If fg and bg match this becomes a space character */
131	if (fg == bg || uc == ' ') {
132		uc = (u_int)-1;
133		fr = 0;		/* shutup gcc */
134		fs = 0;		/* shutup gcc */
135	} else {
136		fr = FONT_GLYPH(uc, font, ri);
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, uint32_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 & WSATTR_UNDERLINE) {
163			DELTA(rp, -(ri->ri_stride << 1), uint32_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, uint32_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, uint32_t *);
195			}
196		}
197
198		/* Do underline */
199		if (attr & WSATTR_UNDERLINE) {
200			DELTA(rp, -(ri->ri_stride << 1), uint32_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	uint8_t *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		while (height--) {
294			rp[0] = rp[1] = stamp[0];
295			rp += rs;
296		}
297	} else {
298		fr = FONT_GLYPH(uc, font, ri);
299		fs = font->stride;
300
301		while (height--) {
302			rp[0] = stamp[(*fr >> 4) & 0xf];
303			rp[1] = stamp[*fr & 0xf];
304			fr += fs;
305			rp += rs;
306		}
307	}
308
309	/* Do underline */
310	if ((attr & WSATTR_UNDERLINE) != 0) {
311		rp -= ri->ri_stride << 1;
312		rp[0] = rp[1] = stamp[15];
313	}
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	uint8_t *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		while (height--) {
359			rp[0] = rp[1] = rp[2] = stamp[0];
360			rp += rs;
361		}
362	} else {
363		fr = FONT_GLYPH(uc, font, ri);
364		fs = font->stride;
365
366		while (height--) {
367			rp[0] = stamp[(fr[0] >> 4) & 0xf];
368			rp[1] = stamp[fr[0] & 0xf];
369			rp[2] = stamp[(fr[1] >> 4) & 0xf];
370			fr += fs;
371			rp += rs;
372		}
373	}
374
375	/* Do underline */
376	if ((attr & WSATTR_UNDERLINE) != 0) {
377		rp -= ri->ri_stride << 1;
378		rp[0] = rp[1] = rp[2] = stamp[15];
379	}
380
381	stamp_mutex--;
382}
383
384/*
385 * Put a single character. This is for 16-pixel wide fonts.
386 */
387static void
388rasops2_putchar16(void *cookie, int row, int col, u_int uc, long attr)
389{
390	struct rasops_info *ri = (struct rasops_info *)cookie;
391	struct wsdisplay_font *font = PICK_FONT(ri, uc);
392	int height, fs, rs;
393	uint8_t *fr, *rp;
394
395	/* Can't risk remaking the stamp if it's already in use */
396	if (stamp_mutex++) {
397		stamp_mutex--;
398		rasops2_putchar(cookie, row, col, uc, attr);
399		return;
400	}
401
402#ifdef RASOPS_CLIPPING
403	/* Catches 'row < 0' case too */
404	if ((unsigned)row >= (unsigned)ri->ri_rows) {
405		stamp_mutex--;
406		return;
407	}
408
409	if ((unsigned)col >= (unsigned)ri->ri_cols) {
410		stamp_mutex--;
411		return;
412	}
413#endif
414
415	rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
416	height = font->fontheight;
417	rs = ri->ri_stride;
418
419	/* Recompute stamp? */
420	if (attr != stamp_attr)
421		rasops2_makestamp(ri, attr);
422
423	if (uc == ' ') {
424		while (height--) {
425			rp[0] = rp[1] = rp[2] = rp[3] = stamp[0];
426			rp += rs;
427		}
428	} else {
429		fr = FONT_GLYPH(uc, font, ri);
430		fs = font->stride;
431
432		while (height--) {
433			rp[0] = stamp[(fr[0] >> 4) & 0xf];
434			rp[1] = stamp[fr[0] & 0xf];
435			rp[2] = stamp[(fr[1] >> 4) & 0xf];
436			rp[3] = stamp[fr[1] & 0xf];
437			fr += fs;
438			rp += rs;
439		}
440	}
441
442	/* Do underline */
443	if ((attr & WSATTR_UNDERLINE) != 0) {
444		rp -= ri->ri_stride << 1;
445		rp[0] = rp[1] = stamp[15];
446	}
447
448	stamp_mutex--;
449}
450#endif	/* !RASOPS_SMALL */
451
452/*
453 * Grab routines common to depths where (bpp < 8)
454 */
455#define NAME(ident)	rasops2_##ident
456#define PIXEL_SHIFT	1
457
458#include <dev/rasops/rasops_bitops.h>
459