rasops8.c revision 1.9
1 /* $NetBSD: rasops8.c,v 1.9 2000/06/13 13:36:59 ad 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_rasops.h" 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: rasops8.c,v 1.9 2000/06/13 13:36:59 ad Exp $"); 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/time.h> 47 48 #include <dev/wscons/wsdisplayvar.h> 49 #include <dev/wscons/wsconsio.h> 50 #include <dev/rasops/rasops.h> 51 52 static void rasops8_putchar __P((void *, int, int, u_int, long attr)); 53 #ifndef RASOPS_SMALL 54 static void rasops8_putchar8 __P((void *, int, int, u_int, long attr)); 55 static void rasops8_putchar12 __P((void *, int, int, u_int, long attr)); 56 static void rasops8_putchar16 __P((void *, int, int, u_int, long attr)); 57 static void rasops8_makestamp __P((struct rasops_info *ri, long)); 58 #endif 59 60 /* 61 * 4x1 stamp for optimized character blitting 62 */ 63 static int32_t stamp[16]; 64 static long stamp_attr; 65 static int stamp_mutex; /* XXX see note in README */ 66 67 /* 68 * XXX this confuses the hell out of gcc2 (not egcs) which always insists 69 * that the shift count is negative. 70 * 71 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 72 * destination = STAMP_READ(offset) 73 */ 74 #define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2)) 75 #define STAMP_MASK (0xf << 2) 76 #define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o))) 77 78 /* 79 * Initalize a 'rasops_info' descriptor for this depth. 80 */ 81 void 82 rasops8_init(ri) 83 struct rasops_info *ri; 84 { 85 86 switch (ri->ri_font->fontwidth) { 87 #ifndef RASOPS_SMALL 88 case 8: 89 ri->ri_ops.putchar = rasops8_putchar8; 90 break; 91 case 12: 92 ri->ri_ops.putchar = rasops8_putchar12; 93 break; 94 case 16: 95 ri->ri_ops.putchar = rasops8_putchar16; 96 break; 97 #endif /* !RASOPS_SMALL */ 98 default: 99 ri->ri_ops.putchar = rasops8_putchar; 100 break; 101 } 102 } 103 104 /* 105 * Put a single character. 106 */ 107 static void 108 rasops8_putchar(cookie, row, col, uc, attr) 109 void *cookie; 110 int row, col; 111 u_int uc; 112 long attr; 113 { 114 int width, height, cnt, fs, fb; 115 u_char *dp, *rp, *fr, clr[2]; 116 struct rasops_info *ri; 117 118 ri = (struct rasops_info *)cookie; 119 120 #ifdef RASOPS_CLIPPING 121 /* Catches 'row < 0' case too */ 122 if ((unsigned)row >= (unsigned)ri->ri_rows) 123 return; 124 125 if ((unsigned)col >= (unsigned)ri->ri_cols) 126 return; 127 #endif 128 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 129 130 height = ri->ri_font->fontheight; 131 width = ri->ri_font->fontwidth; 132 clr[0] = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 133 clr[1] = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 134 135 if (uc == ' ') { 136 u_char c = clr[0]; 137 138 while (height--) { 139 dp = rp; 140 rp += ri->ri_stride; 141 142 for (cnt = width; cnt; cnt--) 143 *dp++ = c; 144 } 145 } else { 146 uc -= ri->ri_font->firstchar; 147 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 148 fs = ri->ri_font->stride; 149 150 while (height--) { 151 dp = rp; 152 fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24); 153 fr += fs; 154 rp += ri->ri_stride; 155 156 for (cnt = width; cnt; cnt--) { 157 *dp++ = clr[(fb >> 31) & 1]; 158 fb <<= 1; 159 } 160 } 161 } 162 163 /* Do underline */ 164 if ((attr & 1) != 0) { 165 u_char c = clr[1]; 166 167 rp -= (ri->ri_stride << 1); 168 169 while (width--) 170 *rp++ = c; 171 } 172 } 173 174 #ifndef RASOPS_SMALL 175 /* 176 * Recompute the 4x1 blitting stamp. 177 */ 178 static void 179 rasops8_makestamp(ri, attr) 180 struct rasops_info *ri; 181 long attr; 182 { 183 int32_t fg, bg; 184 int i; 185 186 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff; 187 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff; 188 stamp_attr = attr; 189 190 for (i = 0; i < 16; i++) { 191 #if BYTE_ORDER == LITTLE_ENDIAN 192 stamp[i] = (i & 8 ? fg : bg); 193 stamp[i] |= ((i & 4 ? fg : bg) << 8); 194 stamp[i] |= ((i & 2 ? fg : bg) << 16); 195 stamp[i] |= ((i & 1 ? fg : bg) << 24); 196 #else 197 stamp[i] = (i & 1 ? fg : bg); 198 stamp[i] |= ((i & 2 ? fg : bg) << 8); 199 stamp[i] |= ((i & 4 ? fg : bg) << 16); 200 stamp[i] |= ((i & 8 ? fg : bg) << 24); 201 #endif 202 } 203 } 204 205 /* 206 * Put a single character. This is for 8-pixel wide fonts. 207 */ 208 static void 209 rasops8_putchar8(cookie, row, col, uc, attr) 210 void *cookie; 211 int row, col; 212 u_int uc; 213 long attr; 214 { 215 struct rasops_info *ri; 216 int height, fs; 217 int32_t *rp; 218 u_char *fr; 219 220 /* Can't risk remaking the stamp if it's already in use */ 221 if (stamp_mutex++) { 222 stamp_mutex--; 223 rasops8_putchar(cookie, row, col, uc, attr); 224 return; 225 } 226 227 ri = (struct rasops_info *)cookie; 228 229 #ifdef RASOPS_CLIPPING 230 if ((unsigned)row >= (unsigned)ri->ri_rows) { 231 stamp_mutex--; 232 return; 233 } 234 235 if ((unsigned)col >= (unsigned)ri->ri_cols) { 236 stamp_mutex--; 237 return; 238 } 239 #endif 240 241 /* Recompute stamp? */ 242 if (attr != stamp_attr) 243 rasops8_makestamp(ri, attr); 244 245 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 246 height = ri->ri_font->fontheight; 247 248 if (uc == ' ') { 249 while (height--) { 250 rp[0] = rp[1] = stamp[0]; 251 DELTA(rp, ri->ri_stride, int32_t *); 252 } 253 } else { 254 uc -= ri->ri_font->firstchar; 255 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 256 fs = ri->ri_font->stride; 257 258 while (height--) { 259 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 260 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 261 262 fr += fs; 263 DELTA(rp, ri->ri_stride, int32_t *); 264 } 265 } 266 267 /* Do underline */ 268 if ((attr & 1) != 0) { 269 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 270 rp[0] = rp[1] = stamp[15]; 271 } 272 273 stamp_mutex--; 274 } 275 276 /* 277 * Put a single character. This is for 12-pixel wide fonts. 278 */ 279 static void 280 rasops8_putchar12(cookie, row, col, uc, attr) 281 void *cookie; 282 int row, col; 283 u_int uc; 284 long attr; 285 { 286 struct rasops_info *ri; 287 int height, fs; 288 int32_t *rp; 289 u_char *fr; 290 291 /* Can't risk remaking the stamp if it's already in use */ 292 if (stamp_mutex++) { 293 stamp_mutex--; 294 rasops8_putchar(cookie, row, col, uc, attr); 295 return; 296 } 297 298 ri = (struct rasops_info *)cookie; 299 300 #ifdef RASOPS_CLIPPING 301 if ((unsigned)row >= (unsigned)ri->ri_rows) { 302 stamp_mutex--; 303 return; 304 } 305 306 if ((unsigned)col >= (unsigned)ri->ri_cols) { 307 stamp_mutex--; 308 return; 309 } 310 #endif 311 312 /* Recompute stamp? */ 313 if (attr != stamp_attr) 314 rasops8_makestamp(ri, attr); 315 316 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 317 height = ri->ri_font->fontheight; 318 319 if (uc == ' ') { 320 while (height--) { 321 int32_t c = stamp[0]; 322 323 rp[0] = rp[1] = rp[2] = c; 324 DELTA(rp, ri->ri_stride, int32_t *); 325 } 326 } else { 327 uc -= ri->ri_font->firstchar; 328 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 329 fs = ri->ri_font->stride; 330 331 while (height--) { 332 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 333 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 334 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 335 336 fr += fs; 337 DELTA(rp, ri->ri_stride, int32_t *); 338 } 339 } 340 341 /* Do underline */ 342 if ((attr & 1) != 0) { 343 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 344 rp[0] = rp[1] = rp[2] = stamp[15]; 345 } 346 347 stamp_mutex--; 348 } 349 350 /* 351 * Put a single character. This is for 16-pixel wide fonts. 352 */ 353 static void 354 rasops8_putchar16(cookie, row, col, uc, attr) 355 void *cookie; 356 int row, col; 357 u_int uc; 358 long attr; 359 { 360 struct rasops_info *ri; 361 int height, fs; 362 int32_t *rp; 363 u_char *fr; 364 365 /* Can't risk remaking the stamp if it's already in use */ 366 if (stamp_mutex++) { 367 stamp_mutex--; 368 rasops8_putchar(cookie, row, col, uc, attr); 369 return; 370 } 371 372 ri = (struct rasops_info *)cookie; 373 374 #ifdef RASOPS_CLIPPING 375 if ((unsigned)row >= (unsigned)ri->ri_rows) { 376 stamp_mutex--; 377 return; 378 } 379 380 if ((unsigned)col >= (unsigned)ri->ri_cols) { 381 stamp_mutex--; 382 return; 383 } 384 #endif 385 386 /* Recompute stamp? */ 387 if (attr != stamp_attr) 388 rasops8_makestamp(ri, attr); 389 390 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 391 height = ri->ri_font->fontheight; 392 393 if (uc == ' ') { 394 while (height--) 395 rp[0] = rp[1] = rp[2] = rp[3] = stamp[0]; 396 } else { 397 uc -= ri->ri_font->firstchar; 398 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 399 fs = ri->ri_font->stride; 400 401 while (height--) { 402 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 403 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 404 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 405 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 406 407 fr += fs; 408 DELTA(rp, ri->ri_stride, int32_t *); 409 } 410 } 411 412 /* Do underline */ 413 if ((attr & 1) != 0) { 414 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 415 rp[0] = rp[1] = rp[2] = rp[3] = stamp[15]; 416 } 417 418 stamp_mutex--; 419 } 420 #endif /* !RASOPS_SMALL */ 421
Indexes created Tue Sep 23 22:09:46 GMT 2025