rasops2.c revision 1.30
1 /* $NetBSD: rasops2.c,v 1.30 2019/08/07 11:47:33 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: rasops2.c,v 1.30 2019/08/07 11:47:33 rin Exp $"); 34 35 #include "opt_rasops.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/time.h> 40 #include <machine/endian.h> 41 42 #include <dev/wscons/wsdisplayvar.h> 43 #include <dev/wscons/wsconsio.h> 44 45 #define _RASOPS_PRIVATE 46 #define RASOPS_DEPTH 2 47 #include <dev/rasops/rasops.h> 48 #include <dev/rasops/rasops_masks.h> 49 50 static void rasops2_copycols(void *, int, int, int, int); 51 static void rasops2_erasecols(void *, int, int, int, long); 52 static void rasops2_do_cursor(struct rasops_info *); 53 static void rasops2_putchar(void *, int, int col, u_int, long); 54 #ifndef RASOPS_SMALL 55 static void rasops2_putchar8(void *, int, int col, u_int, long); 56 static void rasops2_putchar12(void *, int, int col, u_int, long); 57 static void rasops2_putchar16(void *, int, int col, u_int, long); 58 static void rasops2_makestamp(struct rasops_info *, long); 59 #endif 60 61 #ifndef RASOPS_SMALL 62 /* 4x1 stamp for optimized character blitting */ 63 static uint8_t stamp[16]; 64 static long stamp_attr; 65 static struct rasops_info *stamp_ri; 66 67 /* 68 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 69 * destination = STAMP_READ(offset) 70 */ 71 #define STAMP_SHIFT(fb, n) ((n) ? (fb) >> 4 : (fb)) 72 #define STAMP_MASK 0xf 73 #define STAMP_READ(o) stamp[o] 74 #endif 75 76 /* 77 * Initialize rasops_info struct for this colordepth. 78 */ 79 void 80 rasops2_init(struct rasops_info *ri) 81 { 82 83 if ((ri->ri_font->fontwidth & 3) != 0) { 84 ri->ri_ops.erasecols = rasops2_erasecols; 85 ri->ri_ops.copycols = rasops2_copycols; 86 ri->ri_do_cursor = rasops2_do_cursor; 87 } 88 89 switch (ri->ri_font->fontwidth) { 90 #ifndef RASOPS_SMALL 91 case 8: 92 ri->ri_ops.putchar = rasops2_putchar8; 93 break; 94 case 12: 95 ri->ri_ops.putchar = rasops2_putchar12; 96 break; 97 case 16: 98 ri->ri_ops.putchar = rasops2_putchar16; 99 break; 100 #endif 101 default: 102 ri->ri_ops.putchar = rasops2_putchar; 103 return; 104 } 105 106 #ifndef RASOPS_SMALL 107 stamp_attr = 0; 108 stamp_ri = NULL; 109 #endif 110 } 111 112 #ifndef RASOPS_SMALL 113 /* 114 * Recompute the blitting stamp. 115 */ 116 static void 117 rasops2_makestamp(struct rasops_info *ri, long attr) 118 { 119 int i, fg, bg; 120 121 stamp_attr = attr; 122 stamp_ri = ri; 123 124 fg = ri->ri_devcmap[((uint32_t)attr >> 24) & 0xf] & 3; 125 bg = ri->ri_devcmap[((uint32_t)attr >> 16) & 0xf] & 3; 126 127 for (i = 0; i < 16; i++) { 128 #if BYTE_ORDER == BIG_ENDIAN 129 #define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP 130 #else 131 #define NEED_LITTLE_ENDIAN_STAMP 0 132 #endif 133 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) { 134 /* littel endian */ 135 stamp[i] = (i & 8 ? fg : bg); 136 stamp[i] |= (i & 4 ? fg : bg) << 2; 137 stamp[i] |= (i & 2 ? fg : bg) << 4; 138 stamp[i] |= (i & 1 ? fg : bg) << 6; 139 } else { 140 /* big endian */ 141 stamp[i] = (i & 1 ? fg : bg); 142 stamp[i] |= (i & 2 ? fg : bg) << 2; 143 stamp[i] |= (i & 4 ? fg : bg) << 4; 144 stamp[i] |= (i & 8 ? fg : bg) << 6; 145 } 146 } 147 } 148 149 #define RASOPS_WIDTH 8 150 #include "rasops_putchar_width.h" 151 #undef RASOPS_WIDTH 152 153 #define RASOPS_WIDTH 12 154 #include "rasops_putchar_width.h" 155 #undef RASOPS_WIDTH 156 157 #define RASOPS_WIDTH 16 158 #include "rasops_putchar_width.h" 159 #undef RASOPS_WIDTH 160 161 #endif /* !RASOPS_SMALL */ 162 163 /* 164 * Grab routines common to depths where (bpp < 8) 165 */ 166 #include <dev/rasops/rasops_bitops.h> 167
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