rasops2.c revision 1.23
1 /* $NetBSD: rasops2.c,v 1.23 2019/07/25 03:02:44 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 1.23 2019/07/25 03:02:44 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 fr = FONT_GLYPH(uc, font, ri); 137 fs = font->stride; 138 } 139 140 /* Single word, one mask */ 141 if ((col + width) <= 32) { 142 rmask = rasops_pmask[col][width]; 143 lmask = ~rmask; 144 145 if (uc == (u_int)-1) { 146 bg &= rmask; 147 148 while (height--) { 149 *rp = (*rp & lmask) | bg; 150 DELTA(rp, rs, uint32_t *); 151 } 152 } else { 153 while (height--) { 154 /* get bits, mask */ 155 /* compose sl */ 156 /* mask sl */ 157 /* put word */ 158 } 159 } 160 161 /* Do underline */ 162 if (attr & WSATTR_UNDERLINE) { 163 DELTA(rp, -(ri->ri_stride << 1), uint32_t *); 164 *rp = (*rp & lmask) | (fg & rmask); 165 } 166 } else { 167 lmask = ~rasops_lmask[col]; 168 rmask = ~rasops_rmask[(col + width) & 31]; 169 170 if (uc == (u_int)-1) { 171 bg = bg & ~lmask; 172 width = bg & ~rmask; 173 174 while (height--) { 175 rp[0] = (rp[0] & lmask) | bg; 176 rp[1] = (rp[1] & rmask) | width; 177 DELTA(rp, rs, uint32_t *); 178 } 179 } else { 180 width = 32 - col; 181 182 /* NOT fontbits if bg is white */ 183 while (height--) { 184 fb = ~(fr[3] | (fr[2] << 8) | 185 (fr[1] << 16) | (fr[0] << 24)); 186 187 rp[0] = (rp[0] & lmask) 188 | MBE((u_int)fb >> col); 189 190 rp[1] = (rp[1] & rmask) 191 | (MBE((u_int)fb << width) & ~rmask); 192 193 fr += fs; 194 DELTA(rp, rs, uint32_t *); 195 } 196 } 197 198 /* Do underline */ 199 if (attr & WSATTR_UNDERLINE) { 200 DELTA(rp, -(ri->ri_stride << 1), uint32_t *); 201 rp[0] = (rp[0] & lmask) | (fg & ~lmask); 202 rp[1] = (rp[1] & rmask) | (fg & ~rmask); 203 } 204 } 205 } 206 #endif 207 208 /* 209 * Put a single character. This is the generic version. 210 */ 211 static void 212 rasops2_putchar(void *cookie, int row, int col, u_int uc, long attr) 213 { 214 215 /* XXX punt */ 216 } 217 218 #ifndef RASOPS_SMALL 219 /* 220 * Recompute the blitting stamp. 221 */ 222 static void 223 rasops2_makestamp(struct rasops_info *ri, long attr) 224 { 225 int i, fg, bg; 226 227 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 3; 228 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 3; 229 stamp_attr = attr; 230 231 for (i = 0; i < 16; i++) { 232 #if BYTE_ORDER == BIG_ENDIAN 233 #define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP 234 #else 235 #define NEED_LITTLE_ENDIAN_STAMP 0 236 #endif 237 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) { 238 /* littel endian */ 239 stamp[i] = (i & 8 ? fg : bg); 240 stamp[i] |= (i & 4 ? fg : bg) << 2; 241 stamp[i] |= (i & 2 ? fg : bg) << 4; 242 stamp[i] |= (i & 1 ? fg : bg) << 6; 243 } else { 244 /* big endian */ 245 stamp[i] = (i & 1 ? fg : bg); 246 stamp[i] |= (i & 2 ? fg : bg) << 2; 247 stamp[i] |= (i & 4 ? fg : bg) << 4; 248 stamp[i] |= (i & 8 ? fg : bg) << 6; 249 } 250 } 251 } 252 253 /* 254 * Put a single character. This is for 8-pixel wide fonts. 255 */ 256 static void 257 rasops2_putchar8(void *cookie, int row, int col, u_int uc, long attr) 258 { 259 struct rasops_info *ri = (struct rasops_info *)cookie; 260 struct wsdisplay_font *font = PICK_FONT(ri, uc); 261 int height, fs, rs; 262 uint8_t *fr, *rp; 263 264 /* Can't risk remaking the stamp if it's already in use */ 265 if (stamp_mutex++) { 266 stamp_mutex--; 267 rasops2_putchar(cookie, row, col, uc, attr); 268 return; 269 } 270 271 #ifdef RASOPS_CLIPPING 272 /* Catches 'row < 0' case too */ 273 if ((unsigned)row >= (unsigned)ri->ri_rows) { 274 stamp_mutex--; 275 return; 276 } 277 278 if ((unsigned)col >= (unsigned)ri->ri_cols) { 279 stamp_mutex--; 280 return; 281 } 282 #endif 283 284 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 285 height = font->fontheight; 286 rs = ri->ri_stride; 287 288 /* Recompute stamp? */ 289 if (attr != stamp_attr) 290 rasops2_makestamp(ri, attr); 291 292 if (uc == ' ') { 293 while (height--) { 294 *(uint16_t *)rp = stamp[0]; 295 rp += rs; 296 } 297 } else { 298 fr = FONT_GLYPH(uc, font, ri); 299 fs = font->stride; 300 301 while (height--) { 302 rp[0] = stamp[(*fr >> 4) & 0xf]; 303 rp[1] = stamp[*fr & 0xf]; 304 fr += fs; 305 rp += rs; 306 } 307 } 308 309 /* Do underline */ 310 if ((attr & WSATTR_UNDERLINE) != 0) 311 *(uint16_t *)(rp - (ri->ri_stride << 1)) = stamp[15]; 312 313 stamp_mutex--; 314 } 315 316 /* 317 * Put a single character. This is for 12-pixel wide fonts. 318 */ 319 static void 320 rasops2_putchar12(void *cookie, int row, int col, u_int uc, long attr) 321 { 322 struct rasops_info *ri = (struct rasops_info *)cookie; 323 struct wsdisplay_font *font = PICK_FONT(ri, uc); 324 int height, fs, rs; 325 uint8_t *fr, *rp; 326 327 /* Can't risk remaking the stamp if it's already in use */ 328 if (stamp_mutex++) { 329 stamp_mutex--; 330 rasops2_putchar(cookie, row, col, uc, attr); 331 return; 332 } 333 334 #ifdef RASOPS_CLIPPING 335 /* Catches 'row < 0' case too */ 336 if ((unsigned)row >= (unsigned)ri->ri_rows) { 337 stamp_mutex--; 338 return; 339 } 340 341 if ((unsigned)col >= (unsigned)ri->ri_cols) { 342 stamp_mutex--; 343 return; 344 } 345 #endif 346 347 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 348 height = font->fontheight; 349 rs = ri->ri_stride; 350 351 /* Recompute stamp? */ 352 if (attr != stamp_attr) 353 rasops2_makestamp(ri, attr); 354 355 if (uc == ' ') { 356 while (height--) { 357 rp[0] = rp[1] = rp[2] = stamp[0]; 358 rp += rs; 359 } 360 } else { 361 fr = FONT_GLYPH(uc, font, ri); 362 fs = font->stride; 363 364 while (height--) { 365 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 366 rp[1] = stamp[fr[0] & 0xf]; 367 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 368 fr += fs; 369 rp += rs; 370 } 371 } 372 373 /* Do underline */ 374 if ((attr & WSATTR_UNDERLINE) != 0) { 375 rp -= ri->ri_stride << 1; 376 rp[0] = rp[1] = rp[2] = stamp[15]; 377 } 378 379 stamp_mutex--; 380 } 381 382 /* 383 * Put a single character. This is for 16-pixel wide fonts. 384 */ 385 static void 386 rasops2_putchar16(void *cookie, int row, int col, u_int uc, long attr) 387 { 388 struct rasops_info *ri = (struct rasops_info *)cookie; 389 struct wsdisplay_font *font = PICK_FONT(ri, uc); 390 int height, fs, rs; 391 uint8_t *fr, *rp; 392 393 /* Can't risk remaking the stamp if it's already in use */ 394 if (stamp_mutex++) { 395 stamp_mutex--; 396 rasops2_putchar(cookie, row, col, uc, attr); 397 return; 398 } 399 400 #ifdef RASOPS_CLIPPING 401 /* Catches 'row < 0' case too */ 402 if ((unsigned)row >= (unsigned)ri->ri_rows) { 403 stamp_mutex--; 404 return; 405 } 406 407 if ((unsigned)col >= (unsigned)ri->ri_cols) { 408 stamp_mutex--; 409 return; 410 } 411 #endif 412 413 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 414 height = font->fontheight; 415 rs = ri->ri_stride; 416 417 /* Recompute stamp? */ 418 if (attr != stamp_attr) 419 rasops2_makestamp(ri, attr); 420 421 if (uc == ' ') { 422 while (height--) { 423 *(uint32_t *)rp = stamp[0]; 424 rp += rs; 425 } 426 } else { 427 fr = FONT_GLYPH(uc, font, ri); 428 fs = font->stride; 429 430 while (height--) { 431 rp[0] = stamp[(fr[0] >> 4) & 0xf]; 432 rp[1] = stamp[fr[0] & 0xf]; 433 rp[2] = stamp[(fr[1] >> 4) & 0xf]; 434 rp[3] = stamp[fr[1] & 0xf]; 435 fr += fs; 436 rp += rs; 437 } 438 } 439 440 /* Do underline */ 441 if ((attr & WSATTR_UNDERLINE) != 0) 442 *(uint32_t *)(rp - (ri->ri_stride << 1)) = stamp[15]; 443 444 stamp_mutex--; 445 } 446 #endif /* !RASOPS_SMALL */ 447 448 /* 449 * Grab routines common to depths where (bpp < 8) 450 */ 451 #define NAME(ident) rasops2_##ident 452 #define PIXEL_SHIFT 1 453 454 #include <dev/rasops/rasops_bitops.h> 455
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