rasops2.c revision 1.21
1 /* $NetBSD: rasops2.c,v 1.21 2019/07/24 18:33:49 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: rasops2.c,v 1.21 2019/07/24 18:33:49 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 #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 rasops2_copycols(void *, int, int, int, int); 48 static void rasops2_erasecols(void *, int, int, int, long); 49 static void rasops2_do_cursor(struct rasops_info *); 50 static void rasops2_putchar(void *, int, int col, u_int, long); 51 #ifndef RASOPS_SMALL 52 static void rasops2_putchar8(void *, int, int col, u_int, long); 53 static void rasops2_putchar12(void *, int, int col, u_int, long); 54 static void rasops2_putchar16(void *, int, int col, u_int, long); 55 static void rasops2_makestamp(struct rasops_info *, long); 56 57 /* 58 * 4x1 stamp for optimized character blitting 59 */ 60 static uint8_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 rasops2_init(struct rasops_info *ri) 70 { 71 72 switch (ri->ri_font->fontwidth) { 73 #ifndef RASOPS_SMALL 74 case 8: 75 ri->ri_ops.putchar = rasops2_putchar8; 76 break; 77 case 12: 78 ri->ri_ops.putchar = rasops2_putchar12; 79 break; 80 case 16: 81 ri->ri_ops.putchar = rasops2_putchar16; 82 break; 83 #endif /* !RASOPS_SMALL */ 84 default: 85 panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!"); 86 ri->ri_ops.putchar = rasops2_putchar; 87 break; 88 } 89 90 if ((ri->ri_font->fontwidth & 3) != 0) { 91 ri->ri_ops.erasecols = rasops2_erasecols; 92 ri->ri_ops.copycols = rasops2_copycols; 93 ri->ri_do_cursor = rasops2_do_cursor; 94 } 95 } 96 97 #ifdef notyet 98 /* 99 * Paint a single character. This is the generic version, this is ugly. 100 */ 101 static void 102 rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr) 103 { 104 int height, width, fs, rs, fb, bg, fg, lmask, rmask; 105 struct rasops_info *ri = (struct rasops_info *)cookie; 106 struct wsdisplay_font *font = PICK_FONT(ri, uc); 107 uint32_t *rp; 108 uint8_t *fr; 109 110 #ifdef RASOPS_CLIPPING 111 /* Catches 'row < 0' case too */ 112 if ((unsigned)row >= (unsigned)ri->ri_rows) 113 return; 114 115 if ((unsigned)col >= (unsigned)ri->ri_cols) 116 return; 117 #endif 118 119 width = font->fontwidth << 1; 120 height = font->fontheight; 121 col *= width; 122 rp = (uint32_t *)(ri->ri_bits + row * ri->ri_yscale + 123 ((col >> 3) & ~3)); 124 col = col & 31; 125 rs = ri->ri_stride; 126 127 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 128 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 129 130 /* If fg and bg match this becomes a space character */ 131 if (fg == bg || uc == ' ') { 132 uc = (u_int)-1; 133 fr = 0; /* shutup gcc */ 134 fs = 0; /* shutup gcc */ 135 } else { 136 uc -= font->firstchar; 137 fr = (uint8_t *)font->data + uc * ri->ri_fontscale; 138 fs = font->stride; 139 } 140 141 /* Single word, one mask */ 142 if ((col + width) <= 32) { 143 rmask = rasops_pmask[col][width]; 144 lmask = ~rmask; 145 146 if (uc == (u_int)-1) { 147 bg &= rmask; 148 149 while (height--) { 150 *rp = (*rp & lmask) | bg; 151 DELTA(rp, rs, uint32_t *); 152 } 153 } else { 154 while (height--) { 155 /* get bits, mask */ 156 /* compose sl */ 157 /* mask sl */ 158 /* put word */ 159 } 160 } 161 162 /* Do underline */ 163 if (attr & WSATTR_UNDERLINE) { 164 DELTA(rp, -(ri->ri_stride << 1), uint32_t *); 165 *rp = (*rp & lmask) | (fg & rmask); 166 } 167 } else { 168 lmask = ~rasops_lmask[col]; 169 rmask = ~rasops_rmask[(col + width) & 31]; 170 171 if (uc == (u_int)-1) { 172 bg = bg & ~lmask; 173 width = bg & ~rmask; 174 175 while (height--) { 176 rp[0] = (rp[0] & lmask) | bg; 177 rp[1] = (rp[1] & rmask) | width; 178 DELTA(rp, rs, uint32_t *); 179 } 180 } else { 181 width = 32 - col; 182 183 /* NOT fontbits if bg is white */ 184 while (height--) { 185 fb = ~(fr[3] | (fr[2] << 8) | 186 (fr[1] << 16) | (fr[0] << 24)); 187 188 rp[0] = (rp[0] & lmask) 189 | MBE((u_int)fb >> col); 190 191 rp[1] = (rp[1] & rmask) 192 | (MBE((u_int)fb << width) & ~rmask); 193 194 fr += fs; 195 DELTA(rp, rs, uint32_t *); 196 } 197 } 198 199 /* Do underline */ 200 if (attr & WSATTR_UNDERLINE) { 201 DELTA(rp, -(ri->ri_stride << 1), uint32_t *); 202 rp[0] = (rp[0] & lmask) | (fg & ~lmask); 203 rp[1] = (rp[1] & rmask) | (fg & ~rmask); 204 } 205 } 206 } 207 #endif 208 209 /* 210 * Put a single character. This is the generic version. 211 */ 212 static void 213 rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr) 214 { 215 216 /* XXX punt */ 217 } 218 219 #ifndef RASOPS_SMALL 220 /* 221 * Recompute the blitting stamp. 222 */ 223 static void 224 rasops2_makestamp(struct rasops_info *ri, long attr) 225 { 226 int i, fg, bg; 227 228 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 3; 229 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 3; 230 stamp_attr = attr; 231 232 for (i = 0; i < 16; i++) { 233 #if BYTE_ORDER == BIG_ENDIAN 234 #define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP 235 #else 236 #define NEED_LITTLE_ENDIAN_STAMP 0 237 #endif 238 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) { 239 /* littel endian */ 240 stamp[i] = (i & 8 ? fg : bg); 241 stamp[i] |= (i & 4 ? fg : bg) << 2; 242 stamp[i] |= (i & 2 ? fg : bg) << 4; 243 stamp[i] |= (i & 1 ? fg : bg) << 6; 244 } else { 245 /* big endian */ 246 stamp[i] = (i & 1 ? fg : bg); 247 stamp[i] |= (i & 2 ? fg : bg) << 2; 248 stamp[i] |= (i & 4 ? fg : bg) << 4; 249 stamp[i] |= (i & 8 ? fg : bg) << 6; 250 } 251 } 252 } 253 254 /* 255 * Put a single character. This is for 8-pixel wide fonts. 256 */ 257 static void 258 rasops2_putchar8(void *cookie, int row, int col, u_int uc, long attr) 259 { 260 struct rasops_info *ri = (struct rasops_info *)cookie; 261 struct wsdisplay_font *font = PICK_FONT(ri, uc); 262 int height, fs, rs; 263 uint8_t *fr, *rp; 264 265 /* Can't risk remaking the stamp if it's already in use */ 266 if (stamp_mutex++) { 267 stamp_mutex--; 268 rasops2_putchar(cookie, row, col, uc, attr); 269 return; 270 } 271 272 #ifdef RASOPS_CLIPPING 273 /* Catches 'row < 0' case too */ 274 if ((unsigned)row >= (unsigned)ri->ri_rows) { 275 stamp_mutex--; 276 return; 277 } 278 279 if ((unsigned)col >= (unsigned)ri->ri_cols) { 280 stamp_mutex--; 281 return; 282 } 283 #endif 284 285 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 286 height = font->fontheight; 287 rs = ri->ri_stride; 288 289 /* Recompute stamp? */ 290 if (attr != stamp_attr) 291 rasops2_makestamp(ri, attr); 292 293 if (uc == ' ') { 294 uint8_t c = stamp[0]; 295 while (height--) { 296 *(uint16_t *)rp = c; 297 rp += rs; 298 } 299 } else { 300 uc -= font->firstchar; 301 fr = (uint8_t *)font->data + uc * ri->ri_fontscale; 302 fs = font->stride; 303 304 while (height--) { 305 rp[0] = stamp[(*fr >> 4) & 0xf]; 306 rp[1] = stamp[*fr & 0xf]; 307 fr += fs; 308 rp += rs; 309 } 310 } 311 312 /* Do underline */ 313 if ((attr & WSATTR_UNDERLINE) != 0) 314 *(uint16_t *)(rp - (ri->ri_stride << 1)) = stamp[15]; 315 316 stamp_mutex--; 317 } 318 319 /* 320 * Put a single character. This is for 12-pixel wide fonts. 321 */ 322 static void 323 rasops2_putchar12(void *cookie, int row, int col, u_int uc, long attr) 324 { 325 struct rasops_info *ri = (struct rasops_info *)cookie; 326 struct wsdisplay_font *font = PICK_FONT(ri, uc); 327 int height, fs, rs; 328 uint8_t *fr, *rp; 329 330 /* Can't risk remaking the stamp if it's already in use */ 331 if (stamp_mutex++) { 332 stamp_mutex--; 333 rasops2_putchar(cookie, row, col, uc, attr); 334 return; 335 } 336 337 #ifdef RASOPS_CLIPPING 338 /* Catches 'row < 0' case too */ 339 if ((unsigned)row >= (unsigned)ri->ri_rows) { 340 stamp_mutex--; 341 return; 342 } 343 344 if ((unsigned)col >= (unsigned)ri->ri_cols) { 345 stamp_mutex--; 346 return; 347 } 348 #endif 349 350 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 351 height = font->fontheight; 352 rs = ri->ri_stride; 353 354 /* Recompute stamp? */ 355 if (attr != stamp_attr) 356 rasops2_makestamp(ri, attr); 357 358 if (uc == ' ') { 359 uint8_t c = stamp[0]; 360 while (height--) { 361 rp[0] = rp[1] = rp[2] = c; 362 rp += rs; 363 } 364 } else { 365 uc -= font->firstchar; 366 fr = (uint8_t *)font->data + uc * ri->ri_fontscale; 367 fs = font->stride; 368 369 while (height--) { 370 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 371 rp[1] = stamp[fr[0] & 0xf]; 372 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 373 fr += fs; 374 rp += rs; 375 } 376 } 377 378 /* Do underline */ 379 if ((attr & WSATTR_UNDERLINE) != 0) { 380 rp -= ri->ri_stride << 1; 381 rp[0] = rp[1] = rp[2] = stamp[15]; 382 } 383 384 stamp_mutex--; 385 } 386 387 /* 388 * Put a single character. This is for 16-pixel wide fonts. 389 */ 390 static void 391 rasops2_putchar16(void *cookie, int row, int col, u_int uc, long attr) 392 { 393 struct rasops_info *ri = (struct rasops_info *)cookie; 394 struct wsdisplay_font *font = PICK_FONT(ri, uc); 395 int height, fs, rs; 396 uint8_t *fr, *rp; 397 398 /* Can't risk remaking the stamp if it's already in use */ 399 if (stamp_mutex++) { 400 stamp_mutex--; 401 rasops2_putchar(cookie, row, col, uc, attr); 402 return; 403 } 404 405 #ifdef RASOPS_CLIPPING 406 /* Catches 'row < 0' case too */ 407 if ((unsigned)row >= (unsigned)ri->ri_rows) { 408 stamp_mutex--; 409 return; 410 } 411 412 if ((unsigned)col >= (unsigned)ri->ri_cols) { 413 stamp_mutex--; 414 return; 415 } 416 #endif 417 418 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 419 height = font->fontheight; 420 rs = ri->ri_stride; 421 422 /* Recompute stamp? */ 423 if (attr != stamp_attr) 424 rasops2_makestamp(ri, attr); 425 426 if (uc == ' ') { 427 uint8_t c = stamp[0]; 428 while (height--) { 429 *(uint32_t *)rp = c; 430 rp += rs; 431 } 432 } else { 433 uc -= font->firstchar; 434 fr = (uint8_t *)font->data + uc * ri->ri_fontscale; 435 fs = font->stride; 436 437 while (height--) { 438 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 439 rp[1] = stamp[fr[0] & 0xf]; 440 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 441 rp[3] = stamp[fr[1] & 0xf]; 442 fr += fs; 443 rp += rs; 444 } 445 } 446 447 /* Do underline */ 448 if ((attr & WSATTR_UNDERLINE) != 0) 449 *(uint32_t *)(rp - (ri->ri_stride << 1)) = stamp[15]; 450 451 stamp_mutex--; 452 } 453 #endif /* !RASOPS_SMALL */ 454 455 /* 456 * Grab routines common to depths where (bpp < 8) 457 */ 458 #define NAME(ident) rasops2_##ident 459 #define PIXEL_SHIFT 1 460 461 #include <dev/rasops/rasops_bitops.h> 462
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