xref: /netbsd-src/sys/dev/rasops/rasops1.c (revision b09e761aad3e91448cec0e5cc3a2724dd216de3c)
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