rasops2.c revision 1.14 
1/* 	$NetBSD: rasops2.c,v 1.14 2009/03/14 21:04:22 dsl 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 1.14 2009/03/14 21:04:22 dsl 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;
106	int32_t *rp;
107	u_char *fr;
108
109	ri = (struct rasops_info *)cookie;
110
111#ifdef RASOPS_CLIPPING
112	/* Catches 'row < 0' case too */
113	if ((unsigned)row >= (unsigned)ri->ri_rows)
114		return;
115
116	if ((unsigned)col >= (unsigned)ri->ri_cols)
117		return;
118#endif
119
120	width = ri->ri_font->fontwidth << 1;
121	height = ri->ri_font->fontheight;
122	col *= width;
123	rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((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		uc -= ri->ri_font->firstchar;
137		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
138		fs = ri->ri_font->stride;
139	}
140
141	/* Single word, one mask */
142	if ((col + width) <= 32) {
143		rmask = rasops_pmask[col][width];
144		lmask = ~rmask;
145
146		if (uc == (u_int)-1) {
147			bg &= rmask;
148
149			while (height--) {
150				*rp = (*rp & lmask) | bg;
151				DELTA(rp, rs, int32_t *);
152			}
153		} else {
154			while (height--) {
155				/* get bits, mask */
156				/* compose sl */
157				/* mask sl */
158				/* put word */
159			}
160		}
161
162		/* Do underline */
163		if (attr & 1) {
164			DELTA(rp, -(ri->ri_stride << 1), int32_t *);
165			*rp = (*rp & lmask) | (fg & rmask);
166		}
167	} else {
168		lmask = ~rasops_lmask[col];
169		rmask = ~rasops_rmask[(col + width) & 31];
170
171		if (uc == (u_int)-1) {
172			bg = bg & ~lmask;
173			width = bg & ~rmask;
174
175			while (height--) {
176				rp[0] = (rp[0] & lmask) | bg;
177				rp[1] = (rp[1] & rmask) | width;
178				DELTA(rp, rs, int32_t *);
179			}
180		} else {
181			width = 32 - col;
182
183			/* NOT fontbits if bg is white */
184			while (height--) {
185				fb = ~(fr[3] | (fr[2] << 8) |
186				    (fr[1] << 16) | (fr[0] << 24));
187
188				rp[0] = (rp[0] & lmask)
189				    | MBE((u_int)fb >> col);
190
191				rp[1] = (rp[1] & rmask)
192				   | (MBE((u_int)fb << width) & ~rmask);
193
194				fr += fs;
195				DELTA(rp, rs, int32_t *);
196			}
197		}
198
199		/* Do underline */
200		if (attr & 1) {
201			DELTA(rp, -(ri->ri_stride << 1), int32_t *);
202			rp[0] = (rp[0] & lmask) | (fg & ~lmask);
203			rp[1] = (rp[1] & rmask) | (fg & ~rmask);
204		}
205	}
206}
207#endif
208
209/*
210 * Put a single character. This is the generic version.
211 */
212static void
213rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr)
214{
215
216	/* XXX punt */
217}
218
219#ifndef RASOPS_SMALL
220/*
221 * Recompute the blitting stamp.
222 */
223static void
224rasops2_makestamp(struct rasops_info *ri, long attr)
225{
226	int i, fg, bg;
227
228	fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 3;
229	bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 3;
230	stamp_attr = attr;
231
232	for (i = 0; i < 16; i++) {
233		stamp[i] = (i & 1 ? fg : bg);
234		stamp[i] |= (i & 2 ? fg : bg) << 2;
235		stamp[i] |= (i & 4 ? fg : bg) << 4;
236		stamp[i] |= (i & 8 ? fg : bg) << 6;
237	}
238}
239
240/*
241 * Put a single character. This is for 8-pixel wide fonts.
242 */
243static void
244rasops2_putchar8(void *cookie, int row, int col, u_int uc, long attr)
245{
246	struct rasops_info *ri;
247	int height, fs, rs;
248	u_char *fr, *rp;
249
250	/* Can't risk remaking the stamp if it's already in use */
251	if (stamp_mutex++) {
252		stamp_mutex--;
253		rasops2_putchar(cookie, row, col, uc, attr);
254		return;
255	}
256
257	ri = (struct rasops_info *)cookie;
258
259#ifdef RASOPS_CLIPPING
260	/* Catches 'row < 0' case too */
261	if ((unsigned)row >= (unsigned)ri->ri_rows) {
262		stamp_mutex--;
263		return;
264	}
265
266	if ((unsigned)col >= (unsigned)ri->ri_cols) {
267		stamp_mutex--;
268		return;
269	}
270#endif
271
272	rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
273	height = ri->ri_font->fontheight;
274	rs = ri->ri_stride;
275
276	/* Recompute stamp? */
277	if (attr != stamp_attr)
278		rasops2_makestamp(ri, attr);
279
280	if (uc == ' ') {
281		int8_t c = stamp[0];
282		while (height--) {
283			*(int16_t *)rp = c;
284			rp += rs;
285		}
286	} else {
287		uc -= ri->ri_font->firstchar;
288		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
289		fs = ri->ri_font->stride;
290
291		while (height--) {
292			rp[0] = stamp[(*fr >> 4) & 0xf];
293			rp[1] = stamp[*fr & 0xf];
294			fr += fs;
295			rp += rs;
296		}
297	}
298
299	/* Do underline */
300	if ((attr & 1) != 0)
301		*(int16_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
302
303	stamp_mutex--;
304}
305
306/*
307 * Put a single character. This is for 12-pixel wide fonts.
308 */
309static void
310rasops2_putchar12(void *cookie, int row, int col, u_int uc, long attr)
311{
312	struct rasops_info *ri;
313	int height, fs, rs;
314	u_char *fr, *rp;
315
316	/* Can't risk remaking the stamp if it's already in use */
317	if (stamp_mutex++) {
318		stamp_mutex--;
319		rasops2_putchar(cookie, row, col, uc, attr);
320		return;
321	}
322
323	ri = (struct rasops_info *)cookie;
324
325#ifdef RASOPS_CLIPPING
326	/* Catches 'row < 0' case too */
327	if ((unsigned)row >= (unsigned)ri->ri_rows) {
328		stamp_mutex--;
329		return;
330	}
331
332	if ((unsigned)col >= (unsigned)ri->ri_cols) {
333		stamp_mutex--;
334		return;
335	}
336#endif
337
338	rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
339	height = ri->ri_font->fontheight;
340	rs = ri->ri_stride;
341
342	/* Recompute stamp? */
343	if (attr != stamp_attr)
344		rasops2_makestamp(ri, attr);
345
346	if (uc == ' ') {
347		int8_t c = stamp[0];
348		while (height--) {
349			rp[0] = rp[1] = rp[2] = c;
350			rp += rs;
351		}
352	} else {
353		uc -= ri->ri_font->firstchar;
354		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
355		fs = ri->ri_font->stride;
356
357		while (height--) {
358			rp[0] = stamp[(fr[0] >> 4) & 0xf];
359			rp[1] = stamp[fr[0] & 0xf];
360			rp[2] = stamp[(fr[1] >> 4) & 0xf];
361			fr += fs;
362			rp += rs;
363		}
364	}
365
366	/* Do underline */
367	if ((attr & 1) != 0) {
368		rp -= ri->ri_stride << 1;
369		rp[0] = rp[1] = rp[2] = stamp[15];
370	}
371
372	stamp_mutex--;
373}
374
375/*
376 * Put a single character. This is for 16-pixel wide fonts.
377 */
378static void
379rasops2_putchar16(void *cookie, int row, int col, u_int uc, long attr)
380{
381	struct rasops_info *ri;
382	int height, fs, rs;
383	u_char *fr, *rp;
384
385	/* Can't risk remaking the stamp if it's already in use */
386	if (stamp_mutex++) {
387		stamp_mutex--;
388		rasops2_putchar(cookie, row, col, uc, attr);
389		return;
390	}
391
392	ri = (struct rasops_info *)cookie;
393
394#ifdef RASOPS_CLIPPING
395	/* Catches 'row < 0' case too */
396	if ((unsigned)row >= (unsigned)ri->ri_rows) {
397		stamp_mutex--;
398		return;
399	}
400
401	if ((unsigned)col >= (unsigned)ri->ri_cols) {
402		stamp_mutex--;
403		return;
404	}
405#endif
406
407	rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
408	height = ri->ri_font->fontheight;
409	rs = ri->ri_stride;
410
411	/* Recompute stamp? */
412	if (attr != stamp_attr)
413		rasops2_makestamp(ri, attr);
414
415	if (uc == ' ') {
416		int8_t c = stamp[0];
417		while (height--) {
418			*(int32_t *)rp = c;
419			rp += rs;
420		}
421	} else {
422		uc -= ri->ri_font->firstchar;
423		fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
424		fs = ri->ri_font->stride;
425
426		while (height--) {
427			rp[0] = stamp[(fr[0] >> 4) & 0xf];
428			rp[1] = stamp[fr[0] & 0xf];
429			rp[2] = stamp[(fr[1] >> 4) & 0xf];
430			rp[3] = stamp[fr[1] & 0xf];
431			fr += fs;
432			rp += rs;
433		}
434	}
435
436	/* Do underline */
437	if ((attr & 1) != 0)
438		*(int32_t *)(rp - (ri->ri_stride << 1)) = stamp[15];
439
440	stamp_mutex--;
441}
442#endif	/* !RASOPS_SMALL */
443
444/*
445 * Grab routines common to depths where (bpp < 8)
446 */
447#define NAME(ident)	rasops2_##ident
448#define PIXEL_SHIFT	1
449
450#include <dev/rasops/rasops_bitops.h>
451