1/* $NetBSD: rasops_putchar.h,v 1.8 2019/08/10 01:24:17 rin Exp $ */
2
3/* NetBSD: rasops8.c,v 1.41 2019/07/25 03:02:44 rin Exp  */
4/*-
5 * Copyright (c) 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Andrew Doran.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#if RASOPS_DEPTH != 8 && RASOPS_DEPTH != 15 && RASOPS_DEPTH != 24 && \
34    RASOPS_DEPTH != 32
35#error "Depth not supported"
36#endif
37
38#if   RASOPS_DEPTH == 8
39#define	COLOR_TYPE		uint8_t
40#elif RASOPS_DEPTH ==  15
41#define	COLOR_TYPE		uint16_t
42#else
43#define	COLOR_TYPE		uint32_t
44#endif
45
46#if RASOPS_DEPTH != 24
47#define	PIXEL_TYPE		COLOR_TYPE
48#define	PIXEL_BYTES		sizeof(PIXEL_TYPE)
49#define	SET_COLOR(p, index)	*(p)++ = clr[index]
50#define	SET_RGB(p, r, g, b)						\
51	*(p)++ = (((r) >> (8 - ri->ri_rnum)) << ri->ri_rpos) |		\
52		 (((g) >> (8 - ri->ri_gnum)) << ri->ri_gpos) |		\
53		 (((b) >> (8 - ri->ri_bnum)) << ri->ri_bpos)
54#endif
55
56#if RASOPS_DEPTH == 24
57#define	PIXEL_TYPE		uint8_t
58#define	PIXEL_BYTES		3
59#define	SET_COLOR(p, index)						\
60	do {								\
61		COLOR_TYPE c = clr[index];				\
62		*(p)++ = c >> 16;					\
63		*(p)++ = c >> 8;					\
64		*(p)++ = c;						\
65	} while (0 /* CONSTCOND */)
66#define	SET_RGB(p, r, g, b)						\
67	do {								\
68		(p)[R_OFF] = (r);					\
69		(p)[G_OFF] = (g);					\
70		(p)[B_OFF] = (b);					\
71		(p) += 3;						\
72	} while (0 /* CONSTCOND */)
73#endif
74
75#define	AV(p, w)	(((w) * (p)[1] + (0xff - (w)) * (p)[0]) >> 8)
76
77#if BYTE_ORDER == LITTLE_ENDIAN
78#define	R_OFF	(ri->ri_rpos / 8)
79#define	G_OFF	(ri->ri_gpos / 8)
80#define	B_OFF	(ri->ri_bpos / 8)
81#else /* BIG_ENDIAN XXX not tested */
82#define	R_OFF	(2 - ri->ri_rpos / 8)
83#define	G_OFF	(2 - ri->ri_gpos / 8)
84#define	B_OFF	(2 - ri->ri_bpos / 8)
85#endif
86
87#define NAME(depth)	NAME1(depth)
88#ifndef RASOPS_AA
89#define NAME1(depth)	rasops ## depth ## _putchar
90#else
91#define NAME1(depth)	rasops ## depth ## _putchar_aa
92#endif
93
94/*
95 * Put a single character.
96 */
97static void
98NAME(RASOPS_DEPTH)(void *cookie, int row, int col, u_int uc, long attr)
99{
100	struct rasops_info *ri = (struct rasops_info *)cookie;
101	struct wsdisplay_font *font = PICK_FONT(ri, uc);
102	int height, width, cnt;
103	uint8_t *fr;
104	COLOR_TYPE clr[2];
105	PIXEL_TYPE *dp, *rp, *hp;
106
107	hp = NULL;	/* XXX GCC */
108
109	if (__predict_false(!CHAR_IN_FONT(uc, font)))
110		return;
111
112#ifdef RASOPS_CLIPPING
113	/* Catches 'row < 0' case too */
114	if ((unsigned)row >= (unsigned)ri->ri_rows)
115		return;
116
117	if ((unsigned)col >= (unsigned)ri->ri_cols)
118		return;
119#endif
120
121	height = font->fontheight;
122	width = font->fontwidth;
123
124	rp = (PIXEL_TYPE *)(ri->ri_bits + FBOFFSET(ri, row, col));
125	if (ri->ri_hwbits)
126		hp = (PIXEL_TYPE *)(ri->ri_hwbits + FBOFFSET(ri, row, col));
127
128	clr[0] = (COLOR_TYPE)ATTR_BG(ri, attr);
129	clr[1] = (COLOR_TYPE)ATTR_FG(ri, attr);
130
131	if (uc == ' ') {
132		while (height--) {
133			dp = rp;
134			for (cnt = width; cnt; cnt--)
135				SET_COLOR(dp, 0);
136			if (ri->ri_hwbits) {
137				uint16_t bytes = width * PIXEL_BYTES;
138					/* XXX GCC */
139				memcpy(hp, rp, bytes);
140				DELTA(hp, ri->ri_stride, PIXEL_TYPE *);
141			}
142			DELTA(rp, ri->ri_stride, PIXEL_TYPE *);
143		}
144	} else {
145		fr = FONT_GLYPH(uc, font, ri);
146
147#ifdef RASOPS_AA
148		int off[2];
149		uint8_t r[2], g[2], b[2];
150
151		/*
152	 	 * This is independent to positions/lengths of RGB in pixel.
153	 	 */
154		off[0] = (((uint32_t)attr >> 16) & 0xf) * 3;
155		off[1] = (((uint32_t)attr >> 24) & 0xf) * 3;
156
157		r[0] = rasops_cmap[off[0]];
158		r[1] = rasops_cmap[off[1]];
159		g[0] = rasops_cmap[off[0] + 1];
160		g[1] = rasops_cmap[off[1] + 1];
161		b[0] = rasops_cmap[off[0] + 2];
162		b[1] = rasops_cmap[off[1] + 2];
163#endif
164
165		while (height--) {
166			dp = rp;
167
168#ifndef RASOPS_AA
169			uint32_t fb = rasops_be32uatoh(fr);
170			fr += ri->ri_font->stride;
171
172			for (cnt = width; cnt; cnt--) {
173				SET_COLOR(dp, (fb >> 31) & 1);
174				fb <<= 1;
175			}
176#else /* RASOPS_AA */
177			for (cnt = width; cnt; cnt--) {
178				int w = *fr++;
179				if (w == 0xff)
180					SET_COLOR(dp, 1);
181				else if (w == 0)
182					SET_COLOR(dp, 0);
183				else
184					SET_RGB(dp,
185					    AV(r, w), AV(g, w), AV(b, w));
186			}
187#endif
188			if (ri->ri_hwbits) {
189				uint16_t bytes = width * PIXEL_BYTES;
190					/* XXX GCC */
191				memcpy(hp, rp, bytes);
192				DELTA(hp, ri->ri_stride, PIXEL_TYPE *);
193			}
194			DELTA(rp, ri->ri_stride, PIXEL_TYPE *);
195		}
196	}
197
198	/* Do underline */
199	if ((attr & WSATTR_UNDERLINE) != 0) {
200		DELTA(rp, - ri->ri_stride * ri->ri_ul.off, PIXEL_TYPE *);
201		if (ri->ri_hwbits)
202			DELTA(hp, - ri->ri_stride * ri->ri_ul.off,
203			    PIXEL_TYPE *);
204
205		for (height = ri->ri_ul.height; height; height--) {
206			DELTA(rp, - ri->ri_stride, PIXEL_TYPE *);
207			dp = rp;
208			for (cnt = width; cnt; cnt--)
209				SET_COLOR(dp, 1);
210			if (ri->ri_hwbits) {
211				DELTA(hp, - ri->ri_stride, PIXEL_TYPE *);
212				uint16_t bytes = width * PIXEL_BYTES;
213					/* XXX GCC */
214				memcpy(hp, rp, bytes);
215			}
216		}
217	}
218}
219
220#undef	COLOR_TYPE
221
222#undef	PIXEL_TYPE
223#undef	PIXEL_BYTES
224#undef	SET_COLOR
225#undef	SET_RGB
226
227#undef	AV
228
229#undef	R_OFF
230#undef	G_OFF
231#undef	B_OFF
232
233#undef	NAME
234#undef	NAME1
235