rasops.c revision 1.46.2.2
1 /* $NetBSD: rasops.c,v 1.46.2.2 2007/08/06 11:21:57 ghen 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 <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: rasops.c,v 1.46.2.2 2007/08/06 11:21:57 ghen Exp $"); 41 42 #include "opt_rasops.h" 43 #include "rasops_glue.h" 44 #include "opt_wsmsgattrs.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/time.h> 49 50 #include <machine/bswap.h> 51 #include <machine/endian.h> 52 53 #include <dev/wscons/wsdisplayvar.h> 54 #include <dev/wscons/wsconsio.h> 55 #include <dev/wsfont/wsfont.h> 56 #include <dev/rasops/rasops.h> 57 58 #ifndef _KERNEL 59 #include <errno.h> 60 #endif 61 62 /* ANSI colormap (R,G,B). Upper 8 are high-intensity */ 63 const u_char rasops_cmap[256*3] = { 64 0x00, 0x00, 0x00, /* black */ 65 0x7f, 0x00, 0x00, /* red */ 66 0x00, 0x7f, 0x00, /* green */ 67 0x7f, 0x7f, 0x00, /* brown */ 68 0x00, 0x00, 0x7f, /* blue */ 69 0x7f, 0x00, 0x7f, /* magenta */ 70 0x00, 0x7f, 0x7f, /* cyan */ 71 0xc7, 0xc7, 0xc7, /* white - XXX too dim? */ 72 73 0x7f, 0x7f, 0x7f, /* black */ 74 0xff, 0x00, 0x00, /* red */ 75 0x00, 0xff, 0x00, /* green */ 76 0xff, 0xff, 0x00, /* brown */ 77 0x00, 0x00, 0xff, /* blue */ 78 0xff, 0x00, 0xff, /* magenta */ 79 0x00, 0xff, 0xff, /* cyan */ 80 0xff, 0xff, 0xff, /* white */ 81 82 /* 83 * For the cursor, we need at least the last (255th) 84 * color to be white. Fill up white completely for 85 * simplicity. 86 */ 87 #define _CMWHITE 0xff, 0xff, 0xff, 88 #define _CMWHITE16 _CMWHITE _CMWHITE _CMWHITE _CMWHITE \ 89 _CMWHITE _CMWHITE _CMWHITE _CMWHITE \ 90 _CMWHITE _CMWHITE _CMWHITE _CMWHITE \ 91 _CMWHITE _CMWHITE _CMWHITE _CMWHITE 92 _CMWHITE16 _CMWHITE16 _CMWHITE16 _CMWHITE16 _CMWHITE16 93 _CMWHITE16 _CMWHITE16 _CMWHITE16 _CMWHITE16 _CMWHITE16 94 _CMWHITE16 _CMWHITE16 _CMWHITE16 _CMWHITE16 /* but not the last one */ 95 #undef _CMWHITE16 96 #undef _CMWHITE 97 98 /* 99 * For the cursor the fg/bg indices are bit inverted, so 100 * provide complimentary colors in the upper 16 entries. 101 */ 102 0x7f, 0x7f, 0x7f, /* black */ 103 0xff, 0x00, 0x00, /* red */ 104 0x00, 0xff, 0x00, /* green */ 105 0xff, 0xff, 0x00, /* brown */ 106 0x00, 0x00, 0xff, /* blue */ 107 0xff, 0x00, 0xff, /* magenta */ 108 0x00, 0xff, 0xff, /* cyan */ 109 0xff, 0xff, 0xff, /* white */ 110 111 0x00, 0x00, 0x00, /* black */ 112 0x7f, 0x00, 0x00, /* red */ 113 0x00, 0x7f, 0x00, /* green */ 114 0x7f, 0x7f, 0x00, /* brown */ 115 0x00, 0x00, 0x7f, /* blue */ 116 0x7f, 0x00, 0x7f, /* magenta */ 117 0x00, 0x7f, 0x7f, /* cyan */ 118 0xc7, 0xc7, 0xc7, /* white - XXX too dim? */ 119 }; 120 121 /* True if color is gray */ 122 const u_char rasops_isgray[16] = { 123 1, 0, 0, 0, 124 0, 0, 0, 1, 125 1, 0, 0, 0, 126 0, 0, 0, 1 127 }; 128 129 /* Generic functions */ 130 static void rasops_copyrows(void *, int, int, int); 131 static int rasops_mapchar(void *, int, u_int *); 132 static void rasops_cursor(void *, int, int, int); 133 static int rasops_allocattr_color(void *, int, int, int, long *); 134 static int rasops_allocattr_mono(void *, int, int, int, long *); 135 static void rasops_do_cursor(struct rasops_info *); 136 static void rasops_init_devcmap(struct rasops_info *); 137 138 /* 139 * Initialize a 'rasops_info' descriptor. 140 */ 141 int 142 rasops_init(ri, wantrows, wantcols) 143 struct rasops_info *ri; 144 int wantrows, wantcols; 145 { 146 147 #ifdef _KERNEL 148 /* Select a font if the caller doesn't care */ 149 if (ri->ri_font == NULL) { 150 int cookie; 151 152 wsfont_init(); 153 154 /* Want 8 pixel wide, don't care about aestethics */ 155 cookie = wsfont_find(NULL, 8, 0, 0, WSDISPLAY_FONTORDER_L2R, 156 WSDISPLAY_FONTORDER_L2R); 157 if (cookie <= 0) 158 cookie = wsfont_find(NULL, 0, 0, 0, 159 WSDISPLAY_FONTORDER_L2R, WSDISPLAY_FONTORDER_L2R); 160 161 if (cookie <= 0) { 162 printf("rasops_init: font table is empty\n"); 163 return (-1); 164 } 165 166 if (wsfont_lock(cookie, &ri->ri_font)) { 167 printf("rasops_init: couldn't lock font\n"); 168 return (-1); 169 } 170 171 ri->ri_wsfcookie = cookie; 172 } 173 #endif 174 175 /* This should never happen in reality... */ 176 #ifdef DEBUG 177 if ((long)ri->ri_bits & 3) { 178 printf("rasops_init: bits not aligned on 32-bit boundary\n"); 179 return (-1); 180 } 181 182 if ((int)ri->ri_stride & 3) { 183 printf("rasops_init: stride not aligned on 32-bit boundary\n"); 184 return (-1); 185 } 186 #endif 187 188 if (rasops_reconfig(ri, wantrows, wantcols)) 189 return (-1); 190 191 rasops_init_devcmap(ri); 192 return (0); 193 } 194 195 /* 196 * Reconfigure (because parameters have changed in some way). 197 */ 198 int 199 rasops_reconfig(ri, wantrows, wantcols) 200 struct rasops_info *ri; 201 int wantrows, wantcols; 202 { 203 int bpp, s; 204 205 s = splhigh(); 206 207 if (ri->ri_font->fontwidth > 32 || ri->ri_font->fontwidth < 4) 208 panic("rasops_init: fontwidth assumptions botched!"); 209 210 /* Need this to frob the setup below */ 211 bpp = (ri->ri_depth == 15 ? 16 : ri->ri_depth); 212 213 if ((ri->ri_flg & RI_CFGDONE) != 0) 214 ri->ri_bits = ri->ri_origbits; 215 216 /* Don't care if the caller wants a hideously small console */ 217 if (wantrows < 10) 218 wantrows = 10; 219 220 if (wantcols < 20) 221 wantcols = 20; 222 223 /* Now constrain what they get */ 224 ri->ri_emuwidth = ri->ri_font->fontwidth * wantcols; 225 ri->ri_emuheight = ri->ri_font->fontheight * wantrows; 226 227 if (ri->ri_emuwidth > ri->ri_width) 228 ri->ri_emuwidth = ri->ri_width; 229 230 if (ri->ri_emuheight > ri->ri_height) 231 ri->ri_emuheight = ri->ri_height; 232 233 /* Reduce width until aligned on a 32-bit boundary */ 234 while ((ri->ri_emuwidth * bpp & 31) != 0) 235 ri->ri_emuwidth--; 236 237 ri->ri_cols = ri->ri_emuwidth / ri->ri_font->fontwidth; 238 ri->ri_rows = ri->ri_emuheight / ri->ri_font->fontheight; 239 ri->ri_emustride = ri->ri_emuwidth * bpp >> 3; 240 ri->ri_delta = ri->ri_stride - ri->ri_emustride; 241 ri->ri_ccol = 0; 242 ri->ri_crow = 0; 243 ri->ri_pelbytes = bpp >> 3; 244 245 ri->ri_xscale = (ri->ri_font->fontwidth * bpp) >> 3; 246 ri->ri_yscale = ri->ri_font->fontheight * ri->ri_stride; 247 ri->ri_fontscale = ri->ri_font->fontheight * ri->ri_font->stride; 248 249 #ifdef DEBUG 250 if ((ri->ri_delta & 3) != 0) 251 panic("rasops_init: ri_delta not aligned on 32-bit boundary"); 252 #endif 253 /* Clear the entire display */ 254 if ((ri->ri_flg & RI_CLEAR) != 0) 255 memset(ri->ri_bits, 0, ri->ri_stride * ri->ri_height); 256 257 /* Now centre our window if needs be */ 258 ri->ri_origbits = ri->ri_bits; 259 260 if ((ri->ri_flg & RI_CENTER) != 0) { 261 ri->ri_bits += (((ri->ri_width * bpp >> 3) - 262 ri->ri_emustride) >> 1) & ~3; 263 ri->ri_bits += ((ri->ri_height - ri->ri_emuheight) >> 1) * 264 ri->ri_stride; 265 266 ri->ri_yorigin = (int)(ri->ri_bits - ri->ri_origbits) 267 / ri->ri_stride; 268 ri->ri_xorigin = (((int)(ri->ri_bits - ri->ri_origbits) 269 % ri->ri_stride) * 8 / bpp); 270 } else 271 ri->ri_xorigin = ri->ri_yorigin = 0; 272 273 /* 274 * Fill in defaults for operations set. XXX this nukes private 275 * routines used by accelerated fb drivers. 276 */ 277 ri->ri_ops.mapchar = rasops_mapchar; 278 ri->ri_ops.copyrows = rasops_copyrows; 279 ri->ri_ops.copycols = rasops_copycols; 280 ri->ri_ops.erasecols = rasops_erasecols; 281 ri->ri_ops.eraserows = rasops_eraserows; 282 ri->ri_ops.cursor = rasops_cursor; 283 ri->ri_do_cursor = rasops_do_cursor; 284 285 if (ri->ri_depth < 8 || (ri->ri_flg & RI_FORCEMONO) != 0) { 286 ri->ri_ops.allocattr = rasops_allocattr_mono; 287 ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_REVERSE; 288 } else { 289 ri->ri_ops.allocattr = rasops_allocattr_color; 290 ri->ri_caps = WSSCREEN_UNDERLINE | WSSCREEN_HILIT | 291 WSSCREEN_WSCOLORS | WSSCREEN_REVERSE; 292 } 293 294 switch (ri->ri_depth) { 295 #if NRASOPS1 > 0 296 case 1: 297 rasops1_init(ri); 298 break; 299 #endif 300 #if NRASOPS2 > 0 301 case 2: 302 rasops2_init(ri); 303 break; 304 #endif 305 #if NRASOPS4 > 0 306 case 4: 307 rasops4_init(ri); 308 break; 309 #endif 310 #if NRASOPS8 > 0 311 case 8: 312 rasops8_init(ri); 313 break; 314 #endif 315 #if NRASOPS15 > 0 || NRASOPS16 > 0 316 case 15: 317 case 16: 318 rasops15_init(ri); 319 break; 320 #endif 321 #if NRASOPS24 > 0 322 case 24: 323 rasops24_init(ri); 324 break; 325 #endif 326 #if NRASOPS32 > 0 327 case 32: 328 rasops32_init(ri); 329 break; 330 #endif 331 default: 332 ri->ri_flg &= ~RI_CFGDONE; 333 splx(s); 334 return (-1); 335 } 336 337 ri->ri_flg |= RI_CFGDONE; 338 splx(s); 339 return (0); 340 } 341 342 /* 343 * Map a character. 344 */ 345 static int 346 rasops_mapchar(cookie, c, cp) 347 void *cookie; 348 int c; 349 u_int *cp; 350 { 351 struct rasops_info *ri; 352 353 ri = (struct rasops_info *)cookie; 354 355 #ifdef DIAGNOSTIC 356 if (ri->ri_font == NULL) 357 panic("rasops_mapchar: no font selected"); 358 #endif 359 360 if (ri->ri_font->encoding != WSDISPLAY_FONTENC_ISO) { 361 if ( (c = wsfont_map_unichar(ri->ri_font, c)) < 0) { 362 *cp = ' '; 363 return (0); 364 365 } 366 } 367 368 if (c < ri->ri_font->firstchar) { 369 *cp = ' '; 370 return (0); 371 } 372 373 if (c - ri->ri_font->firstchar >= ri->ri_font->numchars) { 374 *cp = ' '; 375 return (0); 376 } 377 378 *cp = c; 379 return (5); 380 } 381 382 /* 383 * Allocate a color attribute. 384 */ 385 static int 386 rasops_allocattr_color(cookie, fg, bg, flg, attr) 387 void *cookie; 388 int fg, bg, flg; 389 long *attr; 390 { 391 int swap; 392 393 if (__predict_false((unsigned int)fg >= sizeof(rasops_isgray) || 394 (unsigned int)bg >= sizeof(rasops_isgray))) 395 return (EINVAL); 396 397 #ifdef RASOPS_CLIPPING 398 fg &= 7; 399 bg &= 7; 400 #endif 401 if ((flg & WSATTR_BLINK) != 0) 402 return (EINVAL); 403 404 if ((flg & WSATTR_WSCOLORS) == 0) { 405 #ifdef WS_DEFAULT_FG 406 fg = WS_DEFAULT_FG; 407 #else 408 fg = WSCOL_WHITE; 409 #endif 410 #ifdef WS_DEFAULT_BG 411 bg = WS_DEFAULT_BG; 412 #else 413 bg = WSCOL_BLACK; 414 #endif 415 } 416 417 if ((flg & WSATTR_REVERSE) != 0) { 418 swap = fg; 419 fg = bg; 420 bg = swap; 421 } 422 423 if ((flg & WSATTR_HILIT) != 0) 424 fg += 8; 425 426 flg = ((flg & WSATTR_UNDERLINE) ? 1 : 0); 427 428 if (rasops_isgray[fg]) 429 flg |= 2; 430 431 if (rasops_isgray[bg]) 432 flg |= 4; 433 434 *attr = (bg << 16) | (fg << 24) | flg; 435 return (0); 436 } 437 438 /* 439 * Allocate a mono attribute. 440 */ 441 static int 442 rasops_allocattr_mono(cookie, fg, bg, flg, attr) 443 void *cookie; 444 int fg, bg, flg; 445 long *attr; 446 { 447 int swap; 448 449 if ((flg & (WSATTR_BLINK | WSATTR_HILIT | WSATTR_WSCOLORS)) != 0) 450 return (EINVAL); 451 452 fg = 1; 453 bg = 0; 454 455 if ((flg & WSATTR_REVERSE) != 0) { 456 swap = fg; 457 fg = bg; 458 bg = swap; 459 } 460 461 *attr = (bg << 16) | (fg << 24) | ((flg & WSATTR_UNDERLINE) ? 7 : 6); 462 return (0); 463 } 464 465 /* 466 * Copy rows. 467 */ 468 static void 469 rasops_copyrows(cookie, src, dst, num) 470 void *cookie; 471 int src, dst, num; 472 { 473 int32_t *sp, *dp, *srp, *drp; 474 struct rasops_info *ri; 475 int n8, n1, cnt, delta; 476 477 ri = (struct rasops_info *)cookie; 478 479 #ifdef RASOPS_CLIPPING 480 if (dst == src) 481 return; 482 483 if (src < 0) { 484 num += src; 485 src = 0; 486 } 487 488 if ((src + num) > ri->ri_rows) 489 num = ri->ri_rows - src; 490 491 if (dst < 0) { 492 num += dst; 493 dst = 0; 494 } 495 496 if ((dst + num) > ri->ri_rows) 497 num = ri->ri_rows - dst; 498 499 if (num <= 0) 500 return; 501 #endif 502 503 num *= ri->ri_font->fontheight; 504 n8 = ri->ri_emustride >> 5; 505 n1 = (ri->ri_emustride >> 2) & 7; 506 507 if (dst < src) { 508 srp = (int32_t *)(ri->ri_bits + src * ri->ri_yscale); 509 drp = (int32_t *)(ri->ri_bits + dst * ri->ri_yscale); 510 delta = ri->ri_stride; 511 } else { 512 src = ri->ri_font->fontheight * src + num - 1; 513 dst = ri->ri_font->fontheight * dst + num - 1; 514 srp = (int32_t *)(ri->ri_bits + src * ri->ri_stride); 515 drp = (int32_t *)(ri->ri_bits + dst * ri->ri_stride); 516 delta = -ri->ri_stride; 517 } 518 519 while (num--) { 520 dp = drp; 521 sp = srp; 522 DELTA(drp, delta, int32_t *); 523 DELTA(srp, delta, int32_t *); 524 525 for (cnt = n8; cnt; cnt--) { 526 dp[0] = sp[0]; 527 dp[1] = sp[1]; 528 dp[2] = sp[2]; 529 dp[3] = sp[3]; 530 dp[4] = sp[4]; 531 dp[5] = sp[5]; 532 dp[6] = sp[6]; 533 dp[7] = sp[7]; 534 dp += 8; 535 sp += 8; 536 } 537 538 for (cnt = n1; cnt; cnt--) 539 *dp++ = *sp++; 540 } 541 } 542 543 /* 544 * Copy columns. This is slow, and hard to optimize due to alignment, 545 * and the fact that we have to copy both left->right and right->left. 546 * We simply cop-out here and use memmove(), since it handles all of 547 * these cases anyway. 548 */ 549 void 550 rasops_copycols(cookie, row, src, dst, num) 551 void *cookie; 552 int row, src, dst, num; 553 { 554 struct rasops_info *ri; 555 u_char *sp, *dp; 556 int height; 557 558 ri = (struct rasops_info *)cookie; 559 560 #ifdef RASOPS_CLIPPING 561 if (dst == src) 562 return; 563 564 /* Catches < 0 case too */ 565 if ((unsigned)row >= (unsigned)ri->ri_rows) 566 return; 567 568 if (src < 0) { 569 num += src; 570 src = 0; 571 } 572 573 if ((src + num) > ri->ri_cols) 574 num = ri->ri_cols - src; 575 576 if (dst < 0) { 577 num += dst; 578 dst = 0; 579 } 580 581 if ((dst + num) > ri->ri_cols) 582 num = ri->ri_cols - dst; 583 584 if (num <= 0) 585 return; 586 #endif 587 588 num *= ri->ri_xscale; 589 row *= ri->ri_yscale; 590 height = ri->ri_font->fontheight; 591 592 sp = ri->ri_bits + row + src * ri->ri_xscale; 593 dp = ri->ri_bits + row + dst * ri->ri_xscale; 594 595 while (height--) { 596 memmove(dp, sp, num); 597 dp += ri->ri_stride; 598 sp += ri->ri_stride; 599 } 600 } 601 602 /* 603 * Turn cursor off/on. 604 */ 605 static void 606 rasops_cursor(cookie, on, row, col) 607 void *cookie; 608 int on, row, col; 609 { 610 struct rasops_info *ri; 611 612 ri = (struct rasops_info *)cookie; 613 614 /* Turn old cursor off */ 615 if ((ri->ri_flg & RI_CURSOR) != 0) 616 #ifdef RASOPS_CLIPPING 617 if ((ri->ri_flg & RI_CURSORCLIP) == 0) 618 #endif 619 ri->ri_do_cursor(ri); 620 621 /* Select new cursor */ 622 #ifdef RASOPS_CLIPPING 623 ri->ri_flg &= ~RI_CURSORCLIP; 624 625 if (row < 0 || row >= ri->ri_rows) 626 ri->ri_flg |= RI_CURSORCLIP; 627 else if (col < 0 || col >= ri->ri_cols) 628 ri->ri_flg |= RI_CURSORCLIP; 629 #endif 630 ri->ri_crow = row; 631 ri->ri_ccol = col; 632 633 if (on) { 634 ri->ri_flg |= RI_CURSOR; 635 #ifdef RASOPS_CLIPPING 636 if ((ri->ri_flg & RI_CURSORCLIP) == 0) 637 #endif 638 ri->ri_do_cursor(ri); 639 } else 640 ri->ri_flg &= ~RI_CURSOR; 641 } 642 643 /* 644 * Make the device colormap 645 */ 646 static void 647 rasops_init_devcmap(ri) 648 struct rasops_info *ri; 649 { 650 const u_char *p; 651 int i, c; 652 653 switch (ri->ri_depth) { 654 case 1: 655 ri->ri_devcmap[0] = 0; 656 for (i = 1; i < 16; i++) 657 ri->ri_devcmap[i] = -1; 658 return; 659 660 case 2: 661 for (i = 1; i < 15; i++) 662 ri->ri_devcmap[i] = 0xaaaaaaaa; 663 664 ri->ri_devcmap[0] = 0; 665 ri->ri_devcmap[8] = 0x55555555; 666 ri->ri_devcmap[15] = -1; 667 return; 668 669 case 8: 670 for (i = 0; i < 16; i++) 671 ri->ri_devcmap[i] = i | (i<<8) | (i<<16) | (i<<24); 672 return; 673 } 674 675 p = rasops_cmap; 676 677 for (i = 0; i < 16; i++) { 678 if (ri->ri_rnum <= 8) 679 c = (*p >> (8 - ri->ri_rnum)) << ri->ri_rpos; 680 else 681 c = (*p << (ri->ri_rnum - 8)) << ri->ri_rpos; 682 p++; 683 684 if (ri->ri_gnum <= 8) 685 c |= (*p >> (8 - ri->ri_gnum)) << ri->ri_gpos; 686 else 687 c |= (*p << (ri->ri_gnum - 8)) << ri->ri_gpos; 688 p++; 689 690 if (ri->ri_bnum <= 8) 691 c |= (*p >> (8 - ri->ri_bnum)) << ri->ri_bpos; 692 else 693 c |= (*p << (ri->ri_bnum - 8)) << ri->ri_bpos; 694 p++; 695 696 /* Fill the word for generic routines, which want this */ 697 if (ri->ri_depth == 24) 698 c = c | ((c & 0xff) << 24); 699 else if (ri->ri_depth <= 16) 700 c = c | (c << 16); 701 702 /* 24bpp does bswap on the fly. {32,16,15}bpp do it here. */ 703 if ((ri->ri_flg & RI_BSWAP) == 0) 704 ri->ri_devcmap[i] = c; 705 else if (ri->ri_depth == 32) 706 ri->ri_devcmap[i] = bswap32(c); 707 else if (ri->ri_depth == 16 || ri->ri_depth == 15) 708 ri->ri_devcmap[i] = bswap16(c); 709 else 710 ri->ri_devcmap[i] = c; 711 } 712 } 713 714 /* 715 * Unpack a rasops attribute 716 */ 717 void 718 rasops_unpack_attr(attr, fg, bg, underline) 719 long attr; 720 int *fg, *bg, *underline; 721 { 722 723 *fg = ((u_int)attr >> 24) & 0xf; 724 *bg = ((u_int)attr >> 16) & 0xf; 725 if (underline != NULL) 726 *underline = (u_int)attr & 1; 727 } 728 729 /* 730 * Erase rows. This isn't static, since 24-bpp uses it in special cases. 731 */ 732 void 733 rasops_eraserows(cookie, row, num, attr) 734 void *cookie; 735 int row, num; 736 long attr; 737 { 738 struct rasops_info *ri; 739 int np, nw, cnt, delta; 740 int32_t *dp, clr; 741 742 ri = (struct rasops_info *)cookie; 743 744 #ifdef RASOPS_CLIPPING 745 if (row < 0) { 746 num += row; 747 row = 0; 748 } 749 750 if ((row + num) > ri->ri_rows) 751 num = ri->ri_rows - row; 752 753 if (num <= 0) 754 return; 755 #endif 756 757 clr = ri->ri_devcmap[(attr >> 16) & 0xf]; 758 759 /* 760 * XXX The wsdisplay_emulops interface seems a little deficient in 761 * that there is no way to clear the *entire* screen. We provide a 762 * workaround here: if the entire console area is being cleared, and 763 * the RI_FULLCLEAR flag is set, clear the entire display. 764 */ 765 if (num == ri->ri_rows && (ri->ri_flg & RI_FULLCLEAR) != 0) { 766 np = ri->ri_stride >> 5; 767 nw = (ri->ri_stride >> 2) & 7; 768 num = ri->ri_height; 769 dp = (int32_t *)ri->ri_origbits; 770 delta = 0; 771 } else { 772 np = ri->ri_emustride >> 5; 773 nw = (ri->ri_emustride >> 2) & 7; 774 num *= ri->ri_font->fontheight; 775 dp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale); 776 delta = ri->ri_delta; 777 } 778 779 while (num--) { 780 for (cnt = np; cnt; cnt--) { 781 dp[0] = clr; 782 dp[1] = clr; 783 dp[2] = clr; 784 dp[3] = clr; 785 dp[4] = clr; 786 dp[5] = clr; 787 dp[6] = clr; 788 dp[7] = clr; 789 dp += 8; 790 } 791 792 for (cnt = nw; cnt; cnt--) { 793 *(int32_t *)dp = clr; 794 DELTA(dp, 4, int32_t *); 795 } 796 797 DELTA(dp, delta, int32_t *); 798 } 799 } 800 801 /* 802 * Actually turn the cursor on or off. This does the dirty work for 803 * rasops_cursor(). 804 */ 805 static void 806 rasops_do_cursor(ri) 807 struct rasops_info *ri; 808 { 809 int full1, height, cnt, slop1, slop2, row, col; 810 u_char *dp, *rp; 811 812 row = ri->ri_crow; 813 col = ri->ri_ccol; 814 815 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 816 height = ri->ri_font->fontheight; 817 slop1 = (4 - ((long)rp & 3)) & 3; 818 819 if (slop1 > ri->ri_xscale) 820 slop1 = ri->ri_xscale; 821 822 slop2 = (ri->ri_xscale - slop1) & 3; 823 full1 = (ri->ri_xscale - slop1 - slop2) >> 2; 824 825 if ((slop1 | slop2) == 0) { 826 /* A common case */ 827 while (height--) { 828 dp = rp; 829 rp += ri->ri_stride; 830 831 for (cnt = full1; cnt; cnt--) { 832 *(int32_t *)dp ^= ~0; 833 dp += 4; 834 } 835 } 836 } else { 837 /* XXX this is stupid.. use masks instead */ 838 while (height--) { 839 dp = rp; 840 rp += ri->ri_stride; 841 842 if (slop1 & 1) 843 *dp++ ^= ~0; 844 845 if (slop1 & 2) { 846 *(int16_t *)dp ^= ~0; 847 dp += 2; 848 } 849 850 for (cnt = full1; cnt; cnt--) { 851 *(int32_t *)dp ^= ~0; 852 dp += 4; 853 } 854 855 if (slop2 & 1) 856 *dp++ ^= ~0; 857 858 if (slop2 & 2) 859 *(int16_t *)dp ^= ~0; 860 } 861 } 862 } 863 864 /* 865 * Erase columns. 866 */ 867 void 868 rasops_erasecols(cookie, row, col, num, attr) 869 void *cookie; 870 int row, col, num; 871 long attr; 872 { 873 int n8, height, cnt, slop1, slop2, clr; 874 struct rasops_info *ri; 875 int32_t *rp, *dp; 876 877 ri = (struct rasops_info *)cookie; 878 879 #ifdef RASOPS_CLIPPING 880 if ((unsigned)row >= (unsigned)ri->ri_rows) 881 return; 882 883 if (col < 0) { 884 num += col; 885 col = 0; 886 } 887 888 if ((col + num) > ri->ri_cols) 889 num = ri->ri_cols - col; 890 891 if (num <= 0) 892 return; 893 #endif 894 895 num = num * ri->ri_xscale; 896 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 897 height = ri->ri_font->fontheight; 898 clr = ri->ri_devcmap[(attr >> 16) & 0xf]; 899 900 /* Don't bother using the full loop for <= 32 pels */ 901 if (num <= 32) { 902 if (((num | ri->ri_xscale) & 3) == 0) { 903 /* Word aligned blt */ 904 num >>= 2; 905 906 while (height--) { 907 dp = rp; 908 DELTA(rp, ri->ri_stride, int32_t *); 909 910 for (cnt = num; cnt; cnt--) 911 *dp++ = clr; 912 } 913 } else if (((num | ri->ri_xscale) & 1) == 0) { 914 /* 915 * Halfword aligned blt. This is needed so the 916 * 15/16 bit ops can use this function. 917 */ 918 num >>= 1; 919 920 while (height--) { 921 dp = rp; 922 DELTA(rp, ri->ri_stride, int32_t *); 923 924 for (cnt = num; cnt; cnt--) { 925 *(int16_t *)dp = clr; 926 DELTA(dp, 2, int32_t *); 927 } 928 } 929 } else { 930 while (height--) { 931 dp = rp; 932 DELTA(rp, ri->ri_stride, int32_t *); 933 934 for (cnt = num; cnt; cnt--) { 935 *(u_char *)dp = clr; 936 DELTA(dp, 1, int32_t *); 937 } 938 } 939 } 940 941 return; 942 } 943 944 slop1 = (4 - ((long)rp & 3)) & 3; 945 slop2 = (num - slop1) & 3; 946 num -= slop1 + slop2; 947 n8 = num >> 5; 948 num = (num >> 2) & 7; 949 950 while (height--) { 951 dp = rp; 952 DELTA(rp, ri->ri_stride, int32_t *); 953 954 /* Align span to 4 bytes */ 955 if (slop1 & 1) { 956 *(u_char *)dp = clr; 957 DELTA(dp, 1, int32_t *); 958 } 959 960 if (slop1 & 2) { 961 *(int16_t *)dp = clr; 962 DELTA(dp, 2, int32_t *); 963 } 964 965 /* Write 32 bytes per loop */ 966 for (cnt = n8; cnt; cnt--) { 967 dp[0] = clr; 968 dp[1] = clr; 969 dp[2] = clr; 970 dp[3] = clr; 971 dp[4] = clr; 972 dp[5] = clr; 973 dp[6] = clr; 974 dp[7] = clr; 975 dp += 8; 976 } 977 978 /* Write 4 bytes per loop */ 979 for (cnt = num; cnt; cnt--) 980 *dp++ = clr; 981 982 /* Write unaligned trailing slop */ 983 if (slop2 & 1) { 984 *(u_char *)dp = clr; 985 DELTA(dp, 1, int32_t *); 986 } 987 988 if (slop2 & 2) 989 *(int16_t *)dp = clr; 990 } 991 } 992
Indexes created Tue Sep 30 11:09:46 GMT 2025