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rasops_putchar.h revision 1.5 
      1 /* $NetBSD: rasops_putchar.h,v 1.5 2019/07/30 15:29:40 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 #define PUTCHAR(depth)	PUTCHAR1(depth)
     39 #define PUTCHAR1(depth)	rasops ## depth ## _putchar
     40 
     41 #if   RASOPS_DEPTH == 8
     42 #define	COLOR_TYPE		uint8_t
     43 #elif RASOPS_DEPTH ==  15
     44 #define	COLOR_TYPE		uint16_t
     45 #else
     46 #define	COLOR_TYPE		uint32_t
     47 #endif
     48 
     49 #if RASOPS_DEPTH != 24
     50 #define	PIXEL_BYTES		sizeof(COLOR_TYPE)
     51 #define	SET_PIXEL(p, index)						\
     52 	do {								\
     53 		*(COLOR_TYPE *)(p) = clr[index];			\
     54 		(p) += sizeof(COLOR_TYPE);				\
     55 	} while (0 /* CONSTCOND */)
     56 #endif
     57 
     58 #if RASOPS_DEPTH == 24
     59 #define	PIXEL_BYTES		3
     60 #define	SET_PIXEL(p, index)						\
     61 	do {								\
     62 		COLOR_TYPE c = clr[index];				\
     63 		*(p)++ = c >> 16;					\
     64 		*(p)++ = c >> 8;					\
     65 		*(p)++ = c;						\
     66 	} while (0 /* CONSTCOND */)
     67 #endif
     68 
     69 /*
     70  * Put a single character.
     71  */
     72 static void
     73 PUTCHAR(RASOPS_DEPTH)(void *cookie, int row, int col, u_int uc, long attr)
     74 {
     75 	struct rasops_info *ri = (struct rasops_info *)cookie;
     76 	struct wsdisplay_font *font = PICK_FONT(ri, uc);
     77 	int width, height, cnt, fs;
     78 	uint32_t fb;
     79 	uint8_t *dp, *rp, *hp, *fr;
     80 	COLOR_TYPE clr[2];
     81 
     82 	hp = NULL;	/* XXX GCC */
     83 
     84 	if (!CHAR_IN_FONT(uc, font))
     85 		return;
     86 
     87 #ifdef RASOPS_CLIPPING
     88 	/* Catches 'row < 0' case too */
     89 	if ((unsigned)row >= (unsigned)ri->ri_rows)
     90 		return;
     91 
     92 	if ((unsigned)col >= (unsigned)ri->ri_cols)
     93 		return;
     94 #endif
     95 
     96 	rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
     97 	if (ri->ri_hwbits)
     98 		hp = ri->ri_hwbits + row * ri->ri_yscale + col * ri->ri_xscale;
     99 
    100 	height = font->fontheight;
    101 	width = font->fontwidth;
    102 
    103 	clr[0] = (COLOR_TYPE)ri->ri_devcmap[((uint32_t)attr >> 16) & 0xf];
    104 	clr[1] = (COLOR_TYPE)ri->ri_devcmap[((uint32_t)attr >> 24) & 0xf];
    105 
    106 	if (uc == ' ') {
    107 		while (height--) {
    108 			dp = rp;
    109 			for (cnt = width; cnt; cnt--)
    110 				SET_PIXEL(dp, 0);
    111 			if (ri->ri_hwbits) {
    112 				uint16_t bytes = width * PIXEL_BYTES;
    113 					/* XXX GCC */
    114 				memcpy(hp, rp, bytes);
    115 				hp += ri->ri_stride;
    116 			}
    117 			rp += ri->ri_stride;
    118 		}
    119 	} else {
    120 		fr = FONT_GLYPH(uc, font, ri);
    121 		fs = font->stride;
    122 
    123 		while (height--) {
    124 			dp = rp;
    125 			fb = be32uatoh(fr);
    126 			fr += fs;
    127 			for (cnt = width; cnt; cnt--) {
    128 				SET_PIXEL(dp, (fb >> 31) & 1);
    129 				fb <<= 1;
    130 			}
    131 			if (ri->ri_hwbits) {
    132 				uint16_t bytes = width * PIXEL_BYTES;
    133 					/* XXX GCC */
    134 				memcpy(hp, rp, bytes);
    135 				hp += ri->ri_stride;
    136 			}
    137 			rp += ri->ri_stride;
    138 		}
    139 	}
    140 
    141 	/* Do underline */
    142 	if ((attr & WSATTR_UNDERLINE) != 0) {
    143 		rp -= (ri->ri_stride << 1);
    144 		dp = rp;
    145 		while (width--)
    146 			SET_PIXEL(dp, 1);
    147 		if (ri->ri_hwbits) {
    148 			hp -= (ri->ri_stride << 1);
    149 			uint16_t bytes = width * PIXEL_BYTES; /* XXX GCC */
    150 			memcpy(hp, rp, bytes);
    151 		}
    152 	}
    153 }
    154 
    155 #undef	PUTCHAR
    156 #undef	COLOR_TYPE
    157 #undef	PIXEL_BYTES
    158 #undef	SET_PIXEL
    159