rasops8.c revision 1.16.16.5
1 /* $NetBSD: rasops8.c,v 1.16.16.5 2005/11/10 14:07:47 skrll 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: rasops8.c,v 1.16.16.5 2005/11/10 14:07:47 skrll Exp $"); 41 42 #include "opt_rasops.h" 43 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(void *, int, int, u_int, long attr); 53 #ifndef RASOPS_SMALL 54 static void rasops8_putchar8(void *, int, int, u_int, long attr); 55 static void rasops8_putchar12(void *, int, int, u_int, long attr); 56 static void rasops8_putchar16(void *, int, int, u_int, long attr); 57 static void rasops8_makestamp(struct rasops_info *ri, long); 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 #endif 66 67 /* 68 * XXX this confuses the hell out of gcc2 (not egcs) which always insists 69 * that the shift count is negative. 70 * 71 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 72 * destination = STAMP_READ(offset) 73 */ 74 #define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2)) 75 #define STAMP_MASK (0xf << 2) 76 #define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o))) 77 78 /* 79 * Initialize 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 #ifndef RASOPS_SMALL 88 case 8: 89 ri->ri_ops.putchar = rasops8_putchar8; 90 break; 91 case 12: 92 ri->ri_ops.putchar = rasops8_putchar12; 93 break; 94 case 16: 95 ri->ri_ops.putchar = rasops8_putchar16; 96 break; 97 #endif /* !RASOPS_SMALL */ 98 default: 99 ri->ri_ops.putchar = rasops8_putchar; 100 break; 101 } 102 } 103 104 /* 105 * Put a single character. 106 */ 107 static void 108 rasops8_putchar(cookie, row, col, uc, attr) 109 void *cookie; 110 int row, col; 111 u_int uc; 112 long attr; 113 { 114 int width, height, cnt, fs, fb; 115 u_char *dp, *rp, *fr, clr[2]; 116 struct rasops_info *ri; 117 118 ri = (struct rasops_info *)cookie; 119 120 if (!CHAR_IN_FONT(uc, ri->ri_font)) 121 return; 122 123 #ifdef RASOPS_CLIPPING 124 /* Catches 'row < 0' case too */ 125 if ((unsigned)row >= (unsigned)ri->ri_rows) 126 return; 127 128 if ((unsigned)col >= (unsigned)ri->ri_cols) 129 return; 130 #endif 131 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 132 133 height = ri->ri_font->fontheight; 134 width = ri->ri_font->fontwidth; 135 clr[0] = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 136 clr[1] = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 137 138 if (uc == ' ') { 139 u_char c = clr[0]; 140 141 while (height--) { 142 dp = rp; 143 rp += ri->ri_stride; 144 145 for (cnt = width; cnt; cnt--) 146 *dp++ = c; 147 } 148 } else { 149 uc -= ri->ri_font->firstchar; 150 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 151 fs = ri->ri_font->stride; 152 153 while (height--) { 154 dp = rp; 155 fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24); 156 fr += fs; 157 rp += ri->ri_stride; 158 159 for (cnt = width; cnt; cnt--) { 160 *dp++ = clr[(fb >> 31) & 1]; 161 fb <<= 1; 162 } 163 } 164 } 165 166 /* Do underline */ 167 if ((attr & 1) != 0) { 168 u_char c = clr[1]; 169 170 rp -= (ri->ri_stride << 1); 171 172 while (width--) 173 *rp++ = c; 174 } 175 } 176 177 #ifndef RASOPS_SMALL 178 /* 179 * Recompute the 4x1 blitting stamp. 180 */ 181 static void 182 rasops8_makestamp(ri, attr) 183 struct rasops_info *ri; 184 long attr; 185 { 186 int32_t fg, bg; 187 int i; 188 189 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff; 190 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff; 191 stamp_attr = attr; 192 193 for (i = 0; i < 16; i++) { 194 #if BYTE_ORDER == BIG_ENDIAN 195 #define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP 196 #else 197 #define NEED_LITTLE_ENDIAN_STAMP 0 198 #endif 199 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) { 200 /* little endian */ 201 stamp[i] = (i & 8 ? fg : bg); 202 stamp[i] |= ((i & 4 ? fg : bg) << 8); 203 stamp[i] |= ((i & 2 ? fg : bg) << 16); 204 stamp[i] |= ((i & 1 ? fg : bg) << 24); 205 } else { 206 /* big endian */ 207 stamp[i] = (i & 1 ? fg : bg); 208 stamp[i] |= ((i & 2 ? fg : bg) << 8); 209 stamp[i] |= ((i & 4 ? fg : bg) << 16); 210 stamp[i] |= ((i & 8 ? fg : bg) << 24); 211 } 212 } 213 } 214 215 /* 216 * Put a single character. This is for 8-pixel wide fonts. 217 */ 218 static void 219 rasops8_putchar8(cookie, row, col, uc, attr) 220 void *cookie; 221 int row, col; 222 u_int uc; 223 long attr; 224 { 225 struct rasops_info *ri; 226 int height, fs; 227 int32_t *rp; 228 u_char *fr; 229 230 /* Can't risk remaking the stamp if it's already in use */ 231 if (stamp_mutex++) { 232 stamp_mutex--; 233 rasops8_putchar(cookie, row, col, uc, attr); 234 return; 235 } 236 237 ri = (struct rasops_info *)cookie; 238 239 if (!CHAR_IN_FONT(uc, ri->ri_font)) 240 return; 241 242 #ifdef RASOPS_CLIPPING 243 if ((unsigned)row >= (unsigned)ri->ri_rows) { 244 stamp_mutex--; 245 return; 246 } 247 248 if ((unsigned)col >= (unsigned)ri->ri_cols) { 249 stamp_mutex--; 250 return; 251 } 252 #endif 253 254 /* Recompute stamp? */ 255 if (attr != stamp_attr) 256 rasops8_makestamp(ri, attr); 257 258 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 259 height = ri->ri_font->fontheight; 260 261 if (uc == ' ') { 262 while (height--) { 263 rp[0] = rp[1] = stamp[0]; 264 DELTA(rp, ri->ri_stride, int32_t *); 265 } 266 } else { 267 uc -= ri->ri_font->firstchar; 268 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 269 fs = ri->ri_font->stride; 270 271 while (height--) { 272 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 273 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 274 275 fr += fs; 276 DELTA(rp, ri->ri_stride, int32_t *); 277 } 278 } 279 280 /* Do underline */ 281 if ((attr & 1) != 0) { 282 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 283 rp[0] = rp[1] = stamp[15]; 284 } 285 286 stamp_mutex--; 287 } 288 289 /* 290 * Put a single character. This is for 12-pixel wide fonts. 291 */ 292 static void 293 rasops8_putchar12(cookie, row, col, uc, attr) 294 void *cookie; 295 int row, col; 296 u_int uc; 297 long attr; 298 { 299 struct rasops_info *ri; 300 int height, fs; 301 int32_t *rp; 302 u_char *fr; 303 304 /* Can't risk remaking the stamp if it's already in use */ 305 if (stamp_mutex++) { 306 stamp_mutex--; 307 rasops8_putchar(cookie, row, col, uc, attr); 308 return; 309 } 310 311 ri = (struct rasops_info *)cookie; 312 313 if (!CHAR_IN_FONT(uc, ri->ri_font)) 314 return; 315 316 #ifdef RASOPS_CLIPPING 317 if ((unsigned)row >= (unsigned)ri->ri_rows) { 318 stamp_mutex--; 319 return; 320 } 321 322 if ((unsigned)col >= (unsigned)ri->ri_cols) { 323 stamp_mutex--; 324 return; 325 } 326 #endif 327 328 /* Recompute stamp? */ 329 if (attr != stamp_attr) 330 rasops8_makestamp(ri, attr); 331 332 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 333 height = ri->ri_font->fontheight; 334 335 if (uc == ' ') { 336 while (height--) { 337 int32_t c = stamp[0]; 338 339 rp[0] = rp[1] = rp[2] = c; 340 DELTA(rp, ri->ri_stride, int32_t *); 341 } 342 } else { 343 uc -= ri->ri_font->firstchar; 344 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 345 fs = ri->ri_font->stride; 346 347 while (height--) { 348 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 349 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 350 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 351 352 fr += fs; 353 DELTA(rp, ri->ri_stride, int32_t *); 354 } 355 } 356 357 /* Do underline */ 358 if ((attr & 1) != 0) { 359 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 360 rp[0] = rp[1] = rp[2] = stamp[15]; 361 } 362 363 stamp_mutex--; 364 } 365 366 /* 367 * Put a single character. This is for 16-pixel wide fonts. 368 */ 369 static void 370 rasops8_putchar16(cookie, row, col, uc, attr) 371 void *cookie; 372 int row, col; 373 u_int uc; 374 long attr; 375 { 376 struct rasops_info *ri; 377 int height, fs; 378 int32_t *rp; 379 u_char *fr; 380 381 /* Can't risk remaking the stamp if it's already in use */ 382 if (stamp_mutex++) { 383 stamp_mutex--; 384 rasops8_putchar(cookie, row, col, uc, attr); 385 return; 386 } 387 388 ri = (struct rasops_info *)cookie; 389 390 if (!CHAR_IN_FONT(uc, ri->ri_font)) 391 return; 392 393 #ifdef RASOPS_CLIPPING 394 if ((unsigned)row >= (unsigned)ri->ri_rows) { 395 stamp_mutex--; 396 return; 397 } 398 399 if ((unsigned)col >= (unsigned)ri->ri_cols) { 400 stamp_mutex--; 401 return; 402 } 403 #endif 404 405 /* Recompute stamp? */ 406 if (attr != stamp_attr) 407 rasops8_makestamp(ri, attr); 408 409 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 410 height = ri->ri_font->fontheight; 411 412 if (uc == ' ') { 413 while (height--) 414 rp[0] = rp[1] = rp[2] = rp[3] = stamp[0]; 415 } else { 416 uc -= ri->ri_font->firstchar; 417 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 418 fs = ri->ri_font->stride; 419 420 while (height--) { 421 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 422 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 423 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 424 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 425 426 fr += fs; 427 DELTA(rp, ri->ri_stride, int32_t *); 428 } 429 } 430 431 /* Do underline */ 432 if ((attr & 1) != 0) { 433 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 434 rp[0] = rp[1] = rp[2] = rp[3] = stamp[15]; 435 } 436 437 stamp_mutex--; 438 } 439 #endif /* !RASOPS_SMALL */ 440
Indexes created Thu Oct 02 10:09:58 GMT 2025