rasops32.c revision 1.37
1 /* $NetBSD: rasops32.c,v 1.37 2019/07/25 15:18:53 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: rasops32.c,v 1.37 2019/07/25 15:18:53 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 41 #include <dev/wscons/wsdisplayvar.h> 42 #include <dev/wscons/wsconsio.h> 43 #include <dev/rasops/rasops.h> 44 45 static void rasops32_putchar(void *, int, int, u_int, long attr); 46 static void rasops32_putchar_aa(void *, int, int, u_int, long attr); 47 #ifndef RASOPS_SMALL 48 static void rasops32_putchar8(void *, int, int, u_int, long); 49 static void rasops32_putchar12(void *, int, int, u_int, long); 50 static void rasops32_putchar16(void *, int, int, u_int, long); 51 static void rasops32_makestamp(struct rasops_info *, long); 52 53 /* 54 * 4x1 stamp for optimized character blitting 55 */ 56 static uint32_t stamp[64]; 57 static long stamp_attr; 58 static int stamp_mutex; /* XXX see note in readme */ 59 #endif 60 61 /* 62 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 63 * destination uint32_t[0] = STAMP_READ(offset) 64 * destination uint32_t[1] = STAMP_READ(offset + 4) 65 * destination uint32_t[2] = STAMP_READ(offset + 8) 66 * destination uint32_t[3] = STAMP_READ(offset + 12) 67 */ 68 #define STAMP_SHIFT(fb, n) ((n) ? (fb) : (fb) << 4) 69 #define STAMP_MASK (0xf << 4) 70 #define STAMP_READ(o) (*(uint32_t *)((char *)stamp + (o))) 71 72 /* 73 * Initialize a 'rasops_info' descriptor for this depth. 74 */ 75 void 76 rasops32_init(struct rasops_info *ri) 77 { 78 79 if (ri->ri_rnum == 0) { 80 ri->ri_rnum = 8; 81 ri->ri_rpos = 0; 82 ri->ri_gnum = 8; 83 ri->ri_gpos = 8; 84 ri->ri_bnum = 8; 85 ri->ri_bpos = 16; 86 } 87 88 if (FONT_IS_ALPHA(ri->ri_font)) { 89 ri->ri_ops.putchar = rasops32_putchar_aa; 90 return; 91 } 92 93 switch (ri->ri_font->fontwidth) { 94 #ifndef RASOPS_SMALL 95 case 8: 96 ri->ri_ops.putchar = rasops32_putchar8; 97 break; 98 case 12: 99 ri->ri_ops.putchar = rasops32_putchar12; 100 break; 101 case 16: 102 ri->ri_ops.putchar = rasops32_putchar16; 103 break; 104 #endif 105 default: 106 ri->ri_ops.putchar = rasops32_putchar; 107 break; 108 } 109 } 110 111 #define RASOPS_DEPTH 32 112 #include "rasops_putchar.h" 113 114 static void 115 rasops32_putchar_aa(void *cookie, int row, int col, u_int uc, long attr) 116 { 117 int width, height, cnt, clr[2]; 118 struct rasops_info *ri = (struct rasops_info *)cookie; 119 struct wsdisplay_font *font = PICK_FONT(ri, uc); 120 uint32_t *dp, *rp; 121 uint8_t *rrp; 122 uint8_t *fr; 123 uint32_t buffer[64]; /* XXX */ 124 int x, y, r, g, b, aval; 125 int r1, g1, b1, r0, g0, b0; 126 127 #ifdef RASOPS_CLIPPING 128 /* Catches 'row < 0' case too */ 129 if ((unsigned)row >= (unsigned)ri->ri_rows) 130 return; 131 132 if ((unsigned)col >= (unsigned)ri->ri_cols) 133 return; 134 #endif 135 136 /* check if character fits into font limits */ 137 if (!CHAR_IN_FONT(uc, font)) 138 return; 139 140 rrp = (ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 141 rp = (uint32_t *)rrp; 142 143 height = font->fontheight; 144 width = font->fontwidth; 145 146 clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf]; 147 clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf]; 148 149 if (uc == ' ') { 150 for (cnt = 0; cnt < width; cnt++) 151 buffer[cnt] = clr[0]; 152 while (height--) { 153 dp = rp; 154 DELTA(rp, ri->ri_stride, uint32_t *); 155 memcpy(dp, buffer, width << 2); 156 } 157 } else { 158 fr = FONT_GLYPH(uc, font, ri); 159 160 r0 = (clr[0] >> 16) & 0xff; 161 r1 = (clr[1] >> 16) & 0xff; 162 g0 = (clr[0] >> 8) & 0xff; 163 g1 = (clr[1] >> 8) & 0xff; 164 b0 = clr[0] & 0xff; 165 b1 = clr[1] & 0xff; 166 167 for (y = 0; y < height; y++) { 168 dp = (uint32_t *)(rrp + ri->ri_stride * y); 169 for (x = 0; x < width; x++) { 170 aval = *fr; 171 if (aval == 0) { 172 buffer[x] = clr[0]; 173 } else if (aval == 255) { 174 buffer[x] = clr[1]; 175 } else { 176 r = aval * r1 + (255 - aval) * r0; 177 g = aval * g1 + (255 - aval) * g0; 178 b = aval * b1 + (255 - aval) * b0; 179 buffer[x] = (r & 0xff00) << 8 | 180 (g & 0xff00) | 181 (b & 0xff00) >> 8; 182 } 183 fr++; 184 } 185 memcpy(dp, buffer, width << 2); 186 } 187 } 188 189 /* Do underline */ 190 if ((attr & WSATTR_UNDERLINE) != 0) { 191 rp = (uint32_t *)rrp; 192 height = font->fontheight; 193 DELTA(rp, (ri->ri_stride * (height - 2)), uint32_t *); 194 while (width--) 195 *rp++ = clr[1]; 196 } 197 } 198 199 #ifndef RASOPS_SMALL 200 /* 201 * Recompute the blitting stamp. 202 */ 203 static void 204 rasops32_makestamp(struct rasops_info *ri, long attr) 205 { 206 uint32_t fg, bg; 207 int i; 208 209 fg = ri->ri_devcmap[((uint32_t)attr >> 24) & 0xf]; 210 bg = ri->ri_devcmap[((uint32_t)attr >> 16) & 0xf]; 211 stamp_attr = attr; 212 213 for (i = 0; i < 64; i += 4) { 214 stamp[i + 0] = (i & 32 ? fg : bg); 215 stamp[i + 1] = (i & 16 ? fg : bg); 216 stamp[i + 2] = (i & 8 ? fg : bg); 217 stamp[i + 3] = (i & 4 ? fg : bg); 218 } 219 } 220 221 #define RASOPS_WIDTH 8 222 #include "rasops_putchar_width.h" 223 #undef RASOPS_WIDTH 224 225 #define RASOPS_WIDTH 12 226 #include "rasops_putchar_width.h" 227 #undef RASOPS_WIDTH 228 229 #define RASOPS_WIDTH 16 230 #include "rasops_putchar_width.h" 231 #undef RASOPS_WIDTH 232 233 #endif /* !RASOPS_SMALL */ 234
Indexes created Tue Sep 23 23:09:58 GMT 2025