rasops32.c revision 1.30 
1/*	 $NetBSD: rasops32.c,v 1.30 2019/03/01 23:14:13 jakllsch 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: rasops32.c,v 1.30 2019/03/01 23:14:13 jakllsch Exp $");
34
35#include "opt_rasops.h"
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/time.h>
40
41#include <dev/wscons/wsdisplayvar.h>
42#include <dev/wscons/wsconsio.h>
43#include <dev/rasops/rasops.h>
44
45static void 	rasops32_putchar(void *, int, int, u_int, long attr);
46static void 	rasops32_putchar_aa(void *, int, int, u_int, long attr);
47
48/*
49 * Initialize a 'rasops_info' descriptor for this depth.
50 */
51void
52rasops32_init(struct rasops_info *ri)
53{
54
55	if (ri->ri_rnum == 0) {
56		ri->ri_rnum = 8;
57		ri->ri_rpos = 0;
58		ri->ri_gnum = 8;
59		ri->ri_gpos = 8;
60		ri->ri_bnum = 8;
61		ri->ri_bpos = 16;
62	}
63
64	if (FONT_IS_ALPHA(ri->ri_font)) {
65		ri->ri_ops.putchar = rasops32_putchar_aa;
66	} else
67		ri->ri_ops.putchar = rasops32_putchar;
68}
69
70/*
71 * Paint a single character.
72 */
73
74static void
75rasops32_putchar(void *cookie, int row, int col, u_int uc, long attr)
76{
77	int width, height, cnt, fs, fb, clr[2];
78	struct rasops_info *ri = (struct rasops_info *)cookie;
79	struct wsdisplay_font *font = PICK_FONT(ri, uc);
80	int32_t *dp, *rp, *hp, *hrp;
81	u_char *fr;
82
83	hp = hrp = NULL;
84
85#ifdef RASOPS_CLIPPING
86	/* Catches 'row < 0' case too */
87	if ((unsigned)row >= (unsigned)ri->ri_rows)
88		return;
89
90	if ((unsigned)col >= (unsigned)ri->ri_cols)
91		return;
92#endif
93
94	/* check if character fits into font limits */
95	if (!CHAR_IN_FONT(uc, font))
96		return;
97
98	rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
99	if (ri->ri_hwbits)
100		hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
101		    col*ri->ri_xscale);
102
103	height = font->fontheight;
104	width = font->fontwidth;
105
106	clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
107	clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
108
109	if (uc == ' ') {
110		while (height--) {
111			dp = rp;
112			DELTA(rp, ri->ri_stride, int32_t *);
113			if (ri->ri_hwbits) {
114				hp = hrp;
115				DELTA(hrp, ri->ri_stride, int32_t *);
116			}
117
118			for (cnt = width; cnt; cnt--) {
119				*dp++ = clr[0];
120				if (ri->ri_hwbits)
121					*hp++ = clr[0];
122			}
123		}
124	} else {
125		fr = WSFONT_GLYPH(uc, font);
126		fs = font->stride;
127
128		while (height--) {
129			dp = rp;
130			fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) |
131			    (fr[0] << 24);
132			fr += fs;
133			DELTA(rp, ri->ri_stride, int32_t *);
134			if (ri->ri_hwbits) {
135				hp = hrp;
136				DELTA(hrp, ri->ri_stride, int32_t *);
137			}
138
139			for (cnt = width; cnt; cnt--) {
140				*dp++ = clr[(fb >> 31) & 1];
141				if (ri->ri_hwbits)
142					*hp++ = clr[(fb >> 31) & 1];
143				fb <<= 1;
144			}
145		}
146	}
147
148	/* Do underline */
149	if ((attr & 1) != 0) {
150		DELTA(rp, -(ri->ri_stride << 1), int32_t *);
151		if (ri->ri_hwbits)
152			DELTA(hrp, -(ri->ri_stride << 1), int32_t *);
153
154		while (width--) {
155			*rp++ = clr[1];
156			if (ri->ri_hwbits)
157				*hrp++ = clr[1];
158		}
159	}
160}
161
162static void
163rasops32_putchar_aa(void *cookie, int row, int col, u_int uc, long attr)
164{
165	int width, height, cnt, clr[2];
166	struct rasops_info *ri = (struct rasops_info *)cookie;
167	struct wsdisplay_font *font = PICK_FONT(ri, uc);
168	int32_t *dp, *rp;
169	uint8_t *rrp;
170	u_char *fr;
171	uint32_t buffer[64]; /* XXX */
172	int x, y, r, g, b, aval;
173	int r1, g1, b1, r0, g0, b0;
174
175#ifdef RASOPS_CLIPPING
176	/* Catches 'row < 0' case too */
177	if ((unsigned)row >= (unsigned)ri->ri_rows)
178		return;
179
180	if ((unsigned)col >= (unsigned)ri->ri_cols)
181		return;
182#endif
183
184	/* check if character fits into font limits */
185	if (!CHAR_IN_FONT(uc, font))
186		return;
187
188	rrp = (ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
189	rp = (int32_t *)rrp;
190
191	height = font->fontheight;
192	width = font->fontwidth;
193
194	clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
195	clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
196
197	if (uc == ' ') {
198	        for (cnt = 0; cnt < width; cnt++)
199	                buffer[cnt] = clr[0];
200		while (height--) {
201			dp = rp;
202			DELTA(rp, ri->ri_stride, int32_t *);
203			memcpy(dp, buffer, width << 2);
204		}
205	} else {
206		fr = WSFONT_GLYPH(uc, font);
207
208		r0 = (clr[0] >> 16) & 0xff;
209		r1 = (clr[1] >> 16) & 0xff;
210		g0 = (clr[0] >> 8) & 0xff;
211		g1 = (clr[1] >> 8) & 0xff;
212		b0 =  clr[0] & 0xff;
213		b1 =  clr[1] & 0xff;
214
215		for (y = 0; y < height; y++) {
216			dp = (uint32_t *)(rrp + ri->ri_stride * y);
217			for (x = 0; x < width; x++) {
218				aval = *fr;
219				if (aval == 0) {
220					buffer[x] = clr[0];
221				} else if (aval == 255) {
222					buffer[x] = clr[1];
223				} else {
224					r = aval * r1 + (255 - aval) * r0;
225					g = aval * g1 + (255 - aval) * g0;
226					b = aval * b1 + (255 - aval) * b0;
227					buffer[x] = (r & 0xff00) << 8 |
228					      (g & 0xff00) |
229					      (b & 0xff00) >> 8;
230				}
231				fr++;
232			}
233			memcpy(dp, buffer, width << 2);
234		}
235	}
236
237	/* Do underline */
238	if ((attr & 1) != 0) {
239	        rp = (uint32_t *)rrp;
240		height = font->fontheight;
241		DELTA(rp, (ri->ri_stride * (height - 2)), int32_t *);
242		while (width--)
243			*rp++ = clr[1];
244	}
245}
246