1/* $NetBSD: rasops8.c,v 1.51 2019/08/14 00:51:10 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: rasops8.c,v 1.51 2019/08/14 00:51:10 rin Exp $"); 34 35#ifdef _KERNEL_OPT 36#include "opt_rasops.h" 37#endif 38 39#include <sys/param.h> 40 41#include <dev/wscons/wsdisplayvar.h> 42#include <dev/wscons/wsconsio.h> 43 44#define _RASOPS_PRIVATE 45#define RASOPS_DEPTH 8 46#include <dev/rasops/rasops.h> 47 48static void rasops8_putchar(void *, int, int, u_int, long); 49static void rasops8_putchar_aa(void *, int, int, u_int, long); 50#ifndef RASOPS_SMALL 51static void rasops8_putchar8(void *, int, int, u_int, long); 52static void rasops8_putchar12(void *, int, int, u_int, long); 53static void rasops8_putchar16(void *, int, int, u_int, long); 54static void rasops8_makestamp(struct rasops_info *ri, long); 55#endif 56 57#ifndef RASOPS_SMALL 58/* stamp for optimized character blitting */ 59static uint32_t stamp[16]; 60static long stamp_attr; 61static struct rasops_info *stamp_ri; 62 63/* 64 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 65 * destination = STAMP_READ(offset) 66 */ 67#define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 2 : (fb) << 2) 68#define STAMP_MASK (0xf << 2) 69#define STAMP_READ(o) (*(uint32_t *)((uint8_t *)stamp + (o))) 70#endif 71 72/* 73 * Initialize a 'rasops_info' descriptor for this depth. 74 */ 75void 76rasops8_init(struct rasops_info *ri) 77{ 78 79 if (ri->ri_flg & RI_8BIT_IS_RGB) { 80 ri->ri_rnum = ri->ri_gnum = 3; 81 ri->ri_bnum = 2; 82 83 ri->ri_rpos = 5; 84 ri->ri_gpos = 2; 85 ri->ri_bpos = 0; 86 } 87 88 if (FONT_IS_ALPHA(ri->ri_font)) { 89 ri->ri_ops.putchar = rasops8_putchar_aa; 90 return; 91 } 92 93 switch (ri->ri_font->fontwidth) { 94#ifndef RASOPS_SMALL 95 case 8: 96 ri->ri_ops.putchar = rasops8_putchar8; 97 break; 98 case 12: 99 ri->ri_ops.putchar = rasops8_putchar12; 100 break; 101 case 16: 102 ri->ri_ops.putchar = rasops8_putchar16; 103 break; 104#endif /* !RASOPS_SMALL */ 105 default: 106 ri->ri_ops.putchar = rasops8_putchar; 107 return; 108 } 109 110#ifndef RASOPS_SMALL 111 stamp_attr = -1; 112 stamp_ri = NULL; 113#endif 114} 115 116/* rasops8_putchar */ 117#undef RASOPS_AA 118#include <dev/rasops/rasops_putchar.h> 119 120/* rasops8_putchar_aa */ 121#define RASOPS_AA 122#include <dev/rasops/rasops_putchar.h> 123#undef RASOPS_AA 124 125#ifndef RASOPS_SMALL 126/* 127 * Recompute the blitting stamp. 128 */ 129static void 130rasops8_makestamp(struct rasops_info *ri, long attr) 131{ 132 int i; 133 uint32_t bg, fg; 134 135 stamp_attr = attr; 136 stamp_ri = ri; 137 138 bg = ATTR_BG(ri, attr) & 0xff; 139 fg = ATTR_FG(ri, attr) & 0xff; 140 141 for (i = 0; i < 16; i++) { 142#if BYTE_ORDER == LITTLE_ENDIAN 143 if ((ri->ri_flg & RI_BSWAP) == 0) 144#else 145 if ((ri->ri_flg & RI_BSWAP) != 0) 146#endif 147 { 148 /* little endian */ 149 stamp[i] = (i & 8 ? fg : bg); 150 stamp[i] |= (i & 4 ? fg : bg) << 8; 151 stamp[i] |= (i & 2 ? fg : bg) << 16; 152 stamp[i] |= (i & 1 ? fg : bg) << 24; 153 } else { 154 /* big endian */ 155 stamp[i] = (i & 1 ? fg : bg); 156 stamp[i] |= (i & 2 ? fg : bg) << 8; 157 stamp[i] |= (i & 4 ? fg : bg) << 16; 158 stamp[i] |= (i & 8 ? fg : bg) << 24; 159 } 160 } 161} 162 163/* 164 * Width-optimized putchar functions 165 */ 166#define RASOPS_WIDTH 8 167#include <dev/rasops/rasops_putchar_width.h> 168#undef RASOPS_WIDTH 169 170#define RASOPS_WIDTH 12 171#include <dev/rasops/rasops_putchar_width.h> 172#undef RASOPS_WIDTH 173 174#define RASOPS_WIDTH 16 175#include <dev/rasops/rasops_putchar_width.h> 176#undef RASOPS_WIDTH 177 178#endif /* !RASOPS_SMALL */ 179