rasops8.c revision 1.4
1 /* $NetBSD: rasops8.c,v 1.4 1999/05/18 21:51:59 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 Andy 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 1.4 1999/05/18 21:51:59 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 static void rasops8_putchar8 __P((void *, int, int, u_int, long attr)); 54 static void rasops8_putchar12 __P((void *, int, int, u_int, long attr)); 55 static void rasops8_putchar16 __P((void *, int, int, u_int, long attr)); 56 static void rasops8_makestamp __P((long)); 57 void rasops8_init __P((struct rasops_info *ri)); 58 59 /* 60 * 4x1 stamp for optimized character blitting 61 */ 62 static int32_t stamp[16]; 63 static long stamp_attr; 64 static int stamp_mutex; /* XXX see note in README */ 65 66 /* 67 * XXX this confuses the hell out of gcc2 (not egcs) which always insists 68 * that the shift count is negative. 69 * 70 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 71 * destination = STAMP_READ(offset) 72 */ 73 #define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2)) 74 #define STAMP_MASK (15 << 2) 75 #define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o))) 76 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 case 8: 88 ri->ri_ops.putchar = rasops8_putchar8; 89 break; 90 91 case 12: 92 ri->ri_ops.putchar = rasops8_putchar12; 93 break; 94 95 case 16: 96 ri->ri_ops.putchar = rasops8_putchar16; 97 break; 98 99 default: 100 ri->ri_ops.putchar = rasops8_putchar; 101 break; 102 } 103 } 104 105 106 /* 107 * Put a single character. 108 */ 109 static void 110 rasops8_putchar(cookie, row, col, uc, attr) 111 void *cookie; 112 int row, col; 113 u_int uc; 114 long attr; 115 { 116 struct rasops_info *ri; 117 u_char *dp, *rp, *fr, clr[2]; 118 int width, height, cnt, fs, fb; 119 120 ri = (struct rasops_info *)cookie; 121 122 #ifdef RASOPS_CLIPPING 123 /* Catches 'row < 0' case too */ 124 if ((unsigned)row >= (unsigned)ri->ri_rows) 125 return; 126 127 if ((unsigned)col >= (unsigned)ri->ri_cols) 128 return; 129 #endif 130 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 131 132 height = ri->ri_font->fontheight; 133 width = ri->ri_font->fontwidth; 134 clr[0] = (u_char)(attr >> 16); 135 clr[1] = (u_char)(attr >> 24); 136 137 if (uc == ' ') { 138 while (height--) { 139 dp = rp; 140 rp += ri->ri_stride; 141 142 for (cnt = width; cnt; cnt--) 143 *dp++ = clr[0]; 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) { 165 rp -= (ri->ri_stride << 1); 166 167 while (width--) 168 *rp++ = clr[1]; 169 } 170 } 171 172 173 /* 174 * Recompute the 4x1 blitting stamp. 175 */ 176 static void 177 rasops8_makestamp(attr) 178 long attr; 179 { 180 int i; 181 int32_t fg, bg; 182 183 fg = (attr >> 24) & 15; 184 bg = (attr >> 16) & 15; 185 stamp_attr = attr; 186 187 for (i = 0; i < 16; i++) { 188 #if BYTE_ORDER == LITTLE_ENDIAN 189 stamp[i] = (i & 8 ? fg : bg); 190 stamp[i] |= ((i & 4 ? fg : bg) << 8); 191 stamp[i] |= ((i & 2 ? fg : bg) << 16); 192 stamp[i] |= ((i & 1 ? fg : bg) << 24); 193 #else 194 stamp[i] = (i & 1 ? fg : bg); 195 stamp[i] |= ((i & 2 ? fg : bg) << 8); 196 stamp[i] |= ((i & 4 ? fg : bg) << 16); 197 stamp[i] |= ((i & 8 ? fg : bg) << 24); 198 #endif 199 } 200 } 201 202 203 /* 204 * Put a single character. This is for 8-pixel wide fonts. 205 */ 206 static void 207 rasops8_putchar8(cookie, row, col, uc, attr) 208 void *cookie; 209 int row, col; 210 u_int uc; 211 long attr; 212 { 213 struct rasops_info *ri; 214 int height, fs; 215 int32_t *rp; 216 u_char *fr; 217 218 /* Can't risk remaking the stamp if it's already in use */ 219 if (stamp_mutex++) { 220 stamp_mutex--; 221 rasops8_putchar(cookie, row, col, uc, attr); 222 return; 223 } 224 225 ri = (struct rasops_info *)cookie; 226 227 #ifdef RASOPS_CLIPPING 228 if ((unsigned)row >= (unsigned)ri->ri_rows) { 229 stamp_mutex--; 230 return; 231 } 232 233 if ((unsigned)col >= (unsigned)ri->ri_cols) { 234 stamp_mutex--; 235 return; 236 } 237 #endif 238 239 /* Recompute stamp? */ 240 if (attr != stamp_attr) 241 rasops8_makestamp(attr); 242 243 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 244 height = ri->ri_font->fontheight; 245 246 if (uc == ' ') { 247 while (height--) { 248 rp[0] = stamp[0]; 249 rp[1] = stamp[0]; 250 DELTA(rp, ri->ri_stride, int32_t *); 251 } 252 } else { 253 uc -= ri->ri_font->firstchar; 254 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 255 fs = ri->ri_font->stride; 256 257 while (height--) { 258 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 259 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 260 261 fr += fs; 262 DELTA(rp, ri->ri_stride, int32_t *); 263 } 264 } 265 266 /* Do underline */ 267 if (attr & 1) { 268 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 269 rp[0] = stamp[15]; 270 rp[1] = stamp[15]; 271 } 272 273 stamp_mutex--; 274 } 275 276 277 /* 278 * Put a single character. This is for 12-pixel wide fonts. 279 */ 280 static void 281 rasops8_putchar12(cookie, row, col, uc, attr) 282 void *cookie; 283 int row, col; 284 u_int uc; 285 long attr; 286 { 287 struct rasops_info *ri; 288 int height, fs; 289 int32_t *rp; 290 u_char *fr; 291 292 /* Can't risk remaking the stamp if it's already in use */ 293 if (stamp_mutex++) { 294 stamp_mutex--; 295 rasops8_putchar(cookie, row, col, uc, attr); 296 return; 297 } 298 299 ri = (struct rasops_info *)cookie; 300 301 #ifdef RASOPS_CLIPPING 302 if ((unsigned)row >= (unsigned)ri->ri_rows) { 303 stamp_mutex--; 304 return; 305 } 306 307 if ((unsigned)col >= (unsigned)ri->ri_cols) { 308 stamp_mutex--; 309 return; 310 } 311 #endif 312 313 /* Recompute stamp? */ 314 if (attr != stamp_attr) 315 rasops8_makestamp(attr); 316 317 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 318 height = ri->ri_font->fontheight; 319 320 if (uc == ' ') { 321 while (height--) { 322 rp[0] = stamp[0]; 323 rp[1] = stamp[0]; 324 rp[2] = stamp[0]; 325 DELTA(rp, ri->ri_stride, int32_t *); 326 } 327 } else { 328 uc -= ri->ri_font->firstchar; 329 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 330 fs = ri->ri_font->stride; 331 332 while (height--) { 333 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 334 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 335 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 336 337 fr += fs; 338 DELTA(rp, ri->ri_stride, int32_t *); 339 } 340 } 341 342 /* Do underline */ 343 if (attr & 1) { 344 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 345 rp[0] = stamp[15]; 346 rp[1] = stamp[15]; 347 rp[2] = stamp[15]; 348 } 349 350 stamp_mutex--; 351 } 352 353 354 /* 355 * Put a single character. This is for 16-pixel wide fonts. 356 */ 357 static void 358 rasops8_putchar16(cookie, row, col, uc, attr) 359 void *cookie; 360 int row, col; 361 u_int uc; 362 long attr; 363 { 364 struct rasops_info *ri; 365 int height, fs; 366 int32_t *rp; 367 u_char *fr; 368 369 /* Can't risk remaking the stamp if it's already in use */ 370 if (stamp_mutex++) { 371 stamp_mutex--; 372 rasops8_putchar(cookie, row, col, uc, attr); 373 return; 374 } 375 376 ri = (struct rasops_info *)cookie; 377 378 #ifdef RASOPS_CLIPPING 379 if ((unsigned)row >= (unsigned)ri->ri_rows) { 380 stamp_mutex--; 381 return; 382 } 383 384 if ((unsigned)col >= (unsigned)ri->ri_cols) { 385 stamp_mutex--; 386 return; 387 } 388 #endif 389 390 /* Recompute stamp? */ 391 if (attr != stamp_attr) 392 rasops8_makestamp(attr); 393 394 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 395 height = ri->ri_font->fontheight; 396 397 if (uc == ' ') { 398 while (height--) { 399 rp[0] = stamp[0]; 400 rp[1] = stamp[0]; 401 rp[2] = stamp[0]; 402 rp[3] = stamp[0]; 403 DELTA(rp, ri->ri_stride, int32_t *); 404 } 405 } else { 406 uc -= ri->ri_font->firstchar; 407 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 408 fs = ri->ri_font->stride; 409 410 while (height--) { 411 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 412 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 413 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 414 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 415 416 fr += fs; 417 DELTA(rp, ri->ri_stride, int32_t *); 418 } 419 } 420 421 /* Do underline */ 422 if (attr & 1) { 423 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 424 rp[0] = stamp[15]; 425 rp[1] = stamp[15]; 426 rp[2] = stamp[15]; 427 rp[3] = stamp[15]; 428 } 429 430 stamp_mutex--; 431 } 432
Indexes created Wed Sep 24 05:09:52 GMT 2025