rasops4.c revision 1.6.70.1
1 /* $NetBSD: rasops4.c,v 1.6.70.1 2008/06/02 13:23:49 mjf 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: rasops4.c,v 1.6.70.1 2008/06/02 13:23:49 mjf 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 #include <dev/rasops/rasops.h> 45 #include <dev/rasops/rasops_masks.h> 46 47 static void rasops4_copycols(void *, int, int, int, int); 48 static void rasops4_erasecols(void *, int, int, int, long); 49 static void rasops4_do_cursor(struct rasops_info *); 50 static void rasops4_putchar(void *, int, int col, u_int, long); 51 #ifndef RASOPS_SMALL 52 static void rasops4_putchar8(void *, int, int col, u_int, long); 53 static void rasops4_putchar12(void *, int, int col, u_int, long); 54 static void rasops4_putchar16(void *, int, int col, u_int, long); 55 static void rasops4_makestamp(struct rasops_info *, long); 56 57 /* 58 * 4x1 stamp for optimized character blitting 59 */ 60 static u_int16_t stamp[16]; 61 static long stamp_attr; 62 static int stamp_mutex; /* XXX see note in README */ 63 #endif 64 65 /* 66 * Initialize rasops_info struct for this colordepth. 67 */ 68 void 69 rasops4_init(ri) 70 struct rasops_info *ri; 71 { 72 73 switch (ri->ri_font->fontwidth) { 74 #ifndef RASOPS_SMALL 75 case 8: 76 ri->ri_ops.putchar = rasops4_putchar8; 77 break; 78 case 12: 79 ri->ri_ops.putchar = rasops4_putchar12; 80 break; 81 case 16: 82 ri->ri_ops.putchar = rasops4_putchar16; 83 break; 84 #endif /* !RASOPS_SMALL */ 85 default: 86 panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!"); 87 ri->ri_ops.putchar = rasops4_putchar; 88 break; 89 } 90 91 if ((ri->ri_font->fontwidth & 1) != 0) { 92 ri->ri_ops.erasecols = rasops4_erasecols; 93 ri->ri_ops.copycols = rasops4_copycols; 94 ri->ri_do_cursor = rasops4_do_cursor; 95 } 96 } 97 98 #ifdef notyet 99 /* 100 * Paint a single character. This is the generic version, this is ugly. 101 */ 102 static void 103 rasops4_putchar(cookie, row, col, uc, attr) 104 void *cookie; 105 int row, col; 106 u_int uc; 107 long attr; 108 { 109 int height, width, fs, rs, fb, bg, fg, lmask, rmask; 110 struct rasops_info *ri; 111 int32_t *rp; 112 u_char *fr; 113 114 ri = (struct rasops_info *)cookie; 115 116 #ifdef RASOPS_CLIPPING 117 /* Catches 'row < 0' case too */ 118 if ((unsigned)row >= (unsigned)ri->ri_rows) 119 return; 120 121 if ((unsigned)col >= (unsigned)ri->ri_cols) 122 return; 123 #endif 124 125 width = ri->ri_font->fontwidth << 1; 126 height = ri->ri_font->fontheight; 127 col *= width; 128 rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3)); 129 col = col & 31; 130 rs = ri->ri_stride; 131 132 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 133 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 134 135 /* If fg and bg match this becomes a space character */ 136 if (fg == bg || uc == ' ') { 137 uc = (u_int)-1; 138 fr = 0; /* shutup gcc */ 139 fs = 0; /* shutup gcc */ 140 } else { 141 uc -= ri->ri_font->firstchar; 142 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 143 fs = ri->ri_font->stride; 144 } 145 146 /* Single word, one mask */ 147 if ((col + width) <= 32) { 148 rmask = rasops_pmask[col][width]; 149 lmask = ~rmask; 150 151 if (uc == (u_int)-1) { 152 bg &= rmask; 153 154 while (height--) { 155 *rp = (*rp & lmask) | bg; 156 DELTA(rp, rs, int32_t *); 157 } 158 } else { 159 while (height--) { 160 /* get bits, mask */ 161 /* compose sl */ 162 /* mask sl */ 163 /* put word */ 164 } 165 } 166 167 /* Do underline */ 168 if (attr & 1) { 169 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 170 *rp = (*rp & lmask) | (fg & rmask); 171 } 172 } else { 173 lmask = ~rasops_lmask[col]; 174 rmask = ~rasops_rmask[(col + width) & 31]; 175 176 if (uc == (u_int)-1) { 177 bg = bg & ~lmask; 178 width = bg & ~rmask; 179 180 while (height--) { 181 rp[0] = (rp[0] & lmask) | bg; 182 rp[1] = (rp[1] & rmask) | width; 183 DELTA(rp, rs, int32_t *); 184 } 185 } else { 186 width = 32 - col; 187 188 /* NOT fontbits if bg is white */ 189 while (height--) { 190 fb = ~(fr[3] | (fr[2] << 8) | 191 (fr[1] << 16) | (fr[0] << 24)); 192 193 rp[0] = (rp[0] & lmask) 194 | MBE((u_int)fb >> col); 195 196 rp[1] = (rp[1] & rmask) 197 | (MBE((u_int)fb << width) & ~rmask); 198 199 fr += fs; 200 DELTA(rp, rs, int32_t *); 201 } 202 } 203 204 /* Do underline */ 205 if (attr & 1) { 206 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 207 rp[0] = (rp[0] & lmask) | (fg & ~lmask); 208 rp[1] = (rp[1] & rmask) | (fg & ~rmask); 209 } 210 } 211 } 212 #endif 213 214 /* 215 * Put a single character. This is the generic version. 216 */ 217 static void 218 rasops4_putchar(cookie, row, col, uc, attr) 219 void *cookie; 220 int row, col; 221 u_int uc; 222 long attr; 223 { 224 225 /* XXX punt */ 226 } 227 228 #ifndef RASOPS_SMALL 229 /* 230 * Recompute the blitting stamp. 231 */ 232 static void 233 rasops4_makestamp(ri, attr) 234 struct rasops_info *ri; 235 long attr; 236 { 237 int i, fg, bg; 238 239 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xf; 240 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xf; 241 stamp_attr = attr; 242 243 for (i = 0; i < 16; i++) { 244 stamp[i] = (i & 1 ? fg : bg) << 8; 245 stamp[i] |= (i & 2 ? fg : bg) << 12; 246 stamp[i] |= (i & 4 ? fg : bg) << 0; 247 stamp[i] |= (i & 8 ? fg : bg) << 4; 248 } 249 } 250 251 /* 252 * Put a single character. This is for 8-pixel wide fonts. 253 */ 254 static void 255 rasops4_putchar8(cookie, row, col, uc, attr) 256 void *cookie; 257 int row, col; 258 u_int uc; 259 long attr; 260 { 261 struct rasops_info *ri; 262 int height, fs, rs; 263 u_char *fr; 264 u_int16_t *rp; 265 266 /* Can't risk remaking the stamp if it's already in use */ 267 if (stamp_mutex++) { 268 stamp_mutex--; 269 rasops4_putchar(cookie, row, col, uc, attr); 270 return; 271 } 272 273 ri = (struct rasops_info *)cookie; 274 275 #ifdef RASOPS_CLIPPING 276 /* Catches 'row < 0' case too */ 277 if ((unsigned)row >= (unsigned)ri->ri_rows) { 278 stamp_mutex--; 279 return; 280 } 281 282 if ((unsigned)col >= (unsigned)ri->ri_cols) { 283 stamp_mutex--; 284 return; 285 } 286 #endif 287 288 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale); 289 height = ri->ri_font->fontheight; 290 rs = ri->ri_stride / sizeof(*rp); 291 292 /* Recompute stamp? */ 293 if (attr != stamp_attr) 294 rasops4_makestamp(ri, attr); 295 296 if (uc == ' ') { 297 u_int16_t c = stamp[0]; 298 while (height--) { 299 rp[0] = c; 300 rp[1] = c; 301 rp += rs; 302 } 303 } else { 304 uc -= ri->ri_font->firstchar; 305 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 306 fs = ri->ri_font->stride; 307 308 while (height--) { 309 rp[0] = stamp[(*fr >> 4) & 0xf]; 310 rp[1] = stamp[*fr & 0xf]; 311 fr += fs; 312 rp += rs; 313 } 314 } 315 316 /* Do underline */ 317 if ((attr & 1) != 0) { 318 rp -= (rs << 1); 319 rp[0] = stamp[15]; 320 rp[1] = stamp[15]; 321 } 322 323 stamp_mutex--; 324 } 325 326 /* 327 * Put a single character. This is for 12-pixel wide fonts. 328 */ 329 static void 330 rasops4_putchar12(cookie, row, col, uc, attr) 331 void *cookie; 332 int row, col; 333 u_int uc; 334 long attr; 335 { 336 struct rasops_info *ri; 337 int height, fs, rs; 338 u_char *fr; 339 u_int16_t *rp; 340 341 /* Can't risk remaking the stamp if it's already in use */ 342 if (stamp_mutex++) { 343 stamp_mutex--; 344 rasops4_putchar(cookie, row, col, uc, attr); 345 return; 346 } 347 348 ri = (struct rasops_info *)cookie; 349 350 #ifdef RASOPS_CLIPPING 351 /* Catches 'row < 0' case too */ 352 if ((unsigned)row >= (unsigned)ri->ri_rows) { 353 stamp_mutex--; 354 return; 355 } 356 357 if ((unsigned)col >= (unsigned)ri->ri_cols) { 358 stamp_mutex--; 359 return; 360 } 361 #endif 362 363 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale); 364 height = ri->ri_font->fontheight; 365 rs = ri->ri_stride / sizeof(*rp); 366 367 /* Recompute stamp? */ 368 if (attr != stamp_attr) 369 rasops4_makestamp(ri, attr); 370 371 if (uc == ' ') { 372 u_int16_t c = stamp[0]; 373 while (height--) { 374 rp[0] = c; 375 rp[1] = c; 376 rp[2] = c; 377 rp += rs; 378 } 379 } else { 380 uc -= ri->ri_font->firstchar; 381 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 382 fs = ri->ri_font->stride; 383 384 while (height--) { 385 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 386 rp[1] = stamp[fr[0] & 0xf]; 387 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 388 fr += fs; 389 rp += rs; 390 } 391 } 392 393 /* Do underline */ 394 if ((attr & 1) != 0) { 395 rp -= (rs << 1); 396 rp[0] = stamp[15]; 397 rp[1] = stamp[15]; 398 rp[2] = stamp[15]; 399 } 400 401 stamp_mutex--; 402 } 403 404 /* 405 * Put a single character. This is for 16-pixel wide fonts. 406 */ 407 static void 408 rasops4_putchar16(cookie, row, col, uc, attr) 409 void *cookie; 410 int row, col; 411 u_int uc; 412 long attr; 413 { 414 struct rasops_info *ri; 415 int height, fs, rs; 416 u_char *fr; 417 u_int16_t *rp; 418 419 /* Can't risk remaking the stamp if it's already in use */ 420 if (stamp_mutex++) { 421 stamp_mutex--; 422 rasops4_putchar(cookie, row, col, uc, attr); 423 return; 424 } 425 426 ri = (struct rasops_info *)cookie; 427 428 #ifdef RASOPS_CLIPPING 429 /* Catches 'row < 0' case too */ 430 if ((unsigned)row >= (unsigned)ri->ri_rows) { 431 stamp_mutex--; 432 return; 433 } 434 435 if ((unsigned)col >= (unsigned)ri->ri_cols) { 436 stamp_mutex--; 437 return; 438 } 439 #endif 440 441 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale); 442 height = ri->ri_font->fontheight; 443 rs = ri->ri_stride / sizeof(*rp); 444 445 /* Recompute stamp? */ 446 if (attr != stamp_attr) 447 rasops4_makestamp(ri, attr); 448 449 if (uc == ' ') { 450 u_int16_t c = stamp[0]; 451 while (height--) { 452 rp[0] = c; 453 rp[1] = c; 454 rp[2] = c; 455 rp[3] = c; 456 rp += rs; 457 } 458 } else { 459 uc -= ri->ri_font->firstchar; 460 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 461 fs = ri->ri_font->stride; 462 463 while (height--) { 464 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 465 rp[1] = stamp[fr[0] & 0xf]; 466 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 467 rp[3] = stamp[fr[1] & 0xf]; 468 fr += fs; 469 rp += rs; 470 } 471 } 472 473 /* Do underline */ 474 if ((attr & 1) != 0) { 475 rp -= (rs << 1); 476 rp[0] = stamp[15]; 477 rp[1] = stamp[15]; 478 rp[2] = stamp[15]; 479 rp[3] = stamp[15]; 480 } 481 482 stamp_mutex--; 483 } 484 #endif /* !RASOPS_SMALL */ 485 486 /* 487 * Grab routines common to depths where (bpp < 8) 488 */ 489 #define NAME(ident) rasops4_##ident 490 #define PIXEL_SHIFT 3 491 492 #include <dev/rasops/rasops_bitops.h> 493
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