rasops8.c revision 1.9.4.5
1 /* $NetBSD: rasops8.c,v 1.9.4.5 2002/02/28 04:14:19 nathanw 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 1.9.4.5 2002/02/28 04:14:19 nathanw Exp $"); 41 42 #include "opt_rasops.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/time.h> 47 #include <sys/bswap.h> 48 49 #include <dev/wscons/wsdisplayvar.h> 50 #include <dev/wscons/wsconsio.h> 51 #include <dev/rasops/rasops.h> 52 53 static void rasops8_putchar __P((void *, int, int, u_int, long attr)); 54 #ifndef RASOPS_SMALL 55 static void rasops8_putchar8 __P((void *, int, int, u_int, long attr)); 56 static void rasops8_putchar12 __P((void *, int, int, u_int, long attr)); 57 static void rasops8_putchar16 __P((void *, int, int, u_int, long attr)); 58 static void rasops8_makestamp __P((struct rasops_info *ri, long)); 59 60 /* 61 * 4x1 stamp for optimized character blitting 62 */ 63 static int32_t stamp[16]; 64 static long stamp_attr; 65 static int stamp_mutex; /* XXX see note in README */ 66 #endif 67 68 /* 69 * XXX this confuses the hell out of gcc2 (not egcs) which always insists 70 * that the shift count is negative. 71 * 72 * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK 73 * destination = STAMP_READ(offset) 74 */ 75 #define STAMP_SHIFT(fb,n) ((n*4-2) >= 0 ? (fb)>>(n*4-2):(fb)<<-(n*4-2)) 76 #define STAMP_MASK (0xf << 2) 77 #define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o))) 78 79 /* 80 * Initialize a 'rasops_info' descriptor for this depth. 81 */ 82 void 83 rasops8_init(ri) 84 struct rasops_info *ri; 85 { 86 87 switch (ri->ri_font->fontwidth) { 88 #ifndef RASOPS_SMALL 89 case 8: 90 ri->ri_ops.putchar = rasops8_putchar8; 91 break; 92 case 12: 93 ri->ri_ops.putchar = rasops8_putchar12; 94 break; 95 case 16: 96 ri->ri_ops.putchar = rasops8_putchar16; 97 break; 98 #endif /* !RASOPS_SMALL */ 99 default: 100 ri->ri_ops.putchar = rasops8_putchar; 101 break; 102 } 103 } 104 105 /* 106 * Put a single character. 107 */ 108 static void 109 rasops8_putchar(cookie, row, col, uc, attr) 110 void *cookie; 111 int row, col; 112 u_int uc; 113 long attr; 114 { 115 int width, height, cnt, fs, fb; 116 u_char *dp, *rp, *fr, clr[2]; 117 struct rasops_info *ri; 118 119 ri = (struct rasops_info *)cookie; 120 121 #ifdef RASOPS_CLIPPING 122 /* Catches 'row < 0' case too */ 123 if ((unsigned)row >= (unsigned)ri->ri_rows) 124 return; 125 126 if ((unsigned)col >= (unsigned)ri->ri_cols) 127 return; 128 #endif 129 rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 130 131 height = ri->ri_font->fontheight; 132 width = ri->ri_font->fontwidth; 133 clr[0] = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 134 clr[1] = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 135 136 if (uc == ' ') { 137 u_char c = clr[0]; 138 139 while (height--) { 140 dp = rp; 141 rp += ri->ri_stride; 142 143 for (cnt = width; cnt; cnt--) 144 *dp++ = c; 145 } 146 } else { 147 uc -= ri->ri_font->firstchar; 148 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 149 fs = ri->ri_font->stride; 150 151 while (height--) { 152 dp = rp; 153 fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24); 154 fr += fs; 155 rp += ri->ri_stride; 156 157 for (cnt = width; cnt; cnt--) { 158 *dp++ = clr[(fb >> 31) & 1]; 159 fb <<= 1; 160 } 161 } 162 } 163 164 /* Do underline */ 165 if ((attr & 1) != 0) { 166 u_char c = clr[1]; 167 168 rp -= (ri->ri_stride << 1); 169 170 while (width--) 171 *rp++ = c; 172 } 173 } 174 175 #ifndef RASOPS_SMALL 176 /* 177 * Recompute the 4x1 blitting stamp. 178 */ 179 static void 180 rasops8_makestamp(ri, attr) 181 struct rasops_info *ri; 182 long attr; 183 { 184 int32_t fg, bg; 185 int i; 186 187 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff; 188 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff; 189 stamp_attr = attr; 190 191 for (i = 0; i < 16; i++) { 192 #if BYTE_ORDER == BIG_ENDIAN 193 #define NEED_LITTLE_ENDIAN_STAMP RI_BSWAP 194 #else 195 #define NEED_LITTLE_ENDIAN_STAMP 0 196 #endif 197 if ((ri->ri_flg & RI_BSWAP) == NEED_LITTLE_ENDIAN_STAMP) { 198 /* little endian */ 199 stamp[i] = (i & 8 ? fg : bg); 200 stamp[i] |= ((i & 4 ? fg : bg) << 8); 201 stamp[i] |= ((i & 2 ? fg : bg) << 16); 202 stamp[i] |= ((i & 1 ? fg : bg) << 24); 203 } else { 204 /* big endian */ 205 stamp[i] = (i & 1 ? fg : bg); 206 stamp[i] |= ((i & 2 ? fg : bg) << 8); 207 stamp[i] |= ((i & 4 ? fg : bg) << 16); 208 stamp[i] |= ((i & 8 ? fg : bg) << 24); 209 } 210 } 211 } 212 213 /* 214 * Put a single character. This is for 8-pixel wide fonts. 215 */ 216 static void 217 rasops8_putchar8(cookie, row, col, uc, attr) 218 void *cookie; 219 int row, col; 220 u_int uc; 221 long attr; 222 { 223 struct rasops_info *ri; 224 int height, fs; 225 int32_t *rp; 226 u_char *fr; 227 228 /* Can't risk remaking the stamp if it's already in use */ 229 if (stamp_mutex++) { 230 stamp_mutex--; 231 rasops8_putchar(cookie, row, col, uc, attr); 232 return; 233 } 234 235 ri = (struct rasops_info *)cookie; 236 237 #ifdef RASOPS_CLIPPING 238 if ((unsigned)row >= (unsigned)ri->ri_rows) { 239 stamp_mutex--; 240 return; 241 } 242 243 if ((unsigned)col >= (unsigned)ri->ri_cols) { 244 stamp_mutex--; 245 return; 246 } 247 #endif 248 249 /* Recompute stamp? */ 250 if (attr != stamp_attr) 251 rasops8_makestamp(ri, attr); 252 253 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 254 height = ri->ri_font->fontheight; 255 256 if (uc == ' ') { 257 while (height--) { 258 rp[0] = rp[1] = stamp[0]; 259 DELTA(rp, ri->ri_stride, int32_t *); 260 } 261 } else { 262 uc -= ri->ri_font->firstchar; 263 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 264 fs = ri->ri_font->stride; 265 266 while (height--) { 267 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 268 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 269 270 fr += fs; 271 DELTA(rp, ri->ri_stride, int32_t *); 272 } 273 } 274 275 /* Do underline */ 276 if ((attr & 1) != 0) { 277 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 278 rp[0] = rp[1] = stamp[15]; 279 } 280 281 stamp_mutex--; 282 } 283 284 /* 285 * Put a single character. This is for 12-pixel wide fonts. 286 */ 287 static void 288 rasops8_putchar12(cookie, row, col, uc, attr) 289 void *cookie; 290 int row, col; 291 u_int uc; 292 long attr; 293 { 294 struct rasops_info *ri; 295 int height, fs; 296 int32_t *rp; 297 u_char *fr; 298 299 /* Can't risk remaking the stamp if it's already in use */ 300 if (stamp_mutex++) { 301 stamp_mutex--; 302 rasops8_putchar(cookie, row, col, uc, attr); 303 return; 304 } 305 306 ri = (struct rasops_info *)cookie; 307 308 #ifdef RASOPS_CLIPPING 309 if ((unsigned)row >= (unsigned)ri->ri_rows) { 310 stamp_mutex--; 311 return; 312 } 313 314 if ((unsigned)col >= (unsigned)ri->ri_cols) { 315 stamp_mutex--; 316 return; 317 } 318 #endif 319 320 /* Recompute stamp? */ 321 if (attr != stamp_attr) 322 rasops8_makestamp(ri, attr); 323 324 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 325 height = ri->ri_font->fontheight; 326 327 if (uc == ' ') { 328 while (height--) { 329 int32_t c = stamp[0]; 330 331 rp[0] = rp[1] = rp[2] = c; 332 DELTA(rp, ri->ri_stride, int32_t *); 333 } 334 } else { 335 uc -= ri->ri_font->firstchar; 336 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 337 fs = ri->ri_font->stride; 338 339 while (height--) { 340 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 341 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 342 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 343 344 fr += fs; 345 DELTA(rp, ri->ri_stride, int32_t *); 346 } 347 } 348 349 /* Do underline */ 350 if ((attr & 1) != 0) { 351 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 352 rp[0] = rp[1] = rp[2] = stamp[15]; 353 } 354 355 stamp_mutex--; 356 } 357 358 /* 359 * Put a single character. This is for 16-pixel wide fonts. 360 */ 361 static void 362 rasops8_putchar16(cookie, row, col, uc, attr) 363 void *cookie; 364 int row, col; 365 u_int uc; 366 long attr; 367 { 368 struct rasops_info *ri; 369 int height, fs; 370 int32_t *rp; 371 u_char *fr; 372 373 /* Can't risk remaking the stamp if it's already in use */ 374 if (stamp_mutex++) { 375 stamp_mutex--; 376 rasops8_putchar(cookie, row, col, uc, attr); 377 return; 378 } 379 380 ri = (struct rasops_info *)cookie; 381 382 #ifdef RASOPS_CLIPPING 383 if ((unsigned)row >= (unsigned)ri->ri_rows) { 384 stamp_mutex--; 385 return; 386 } 387 388 if ((unsigned)col >= (unsigned)ri->ri_cols) { 389 stamp_mutex--; 390 return; 391 } 392 #endif 393 394 /* Recompute stamp? */ 395 if (attr != stamp_attr) 396 rasops8_makestamp(ri, attr); 397 398 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 399 height = ri->ri_font->fontheight; 400 401 if (uc == ' ') { 402 while (height--) 403 rp[0] = rp[1] = rp[2] = rp[3] = stamp[0]; 404 } else { 405 uc -= ri->ri_font->firstchar; 406 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 407 fs = ri->ri_font->stride; 408 409 while (height--) { 410 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 411 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 412 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 413 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 414 415 fr += fs; 416 DELTA(rp, ri->ri_stride, int32_t *); 417 } 418 } 419 420 /* Do underline */ 421 if ((attr & 1) != 0) { 422 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 423 rp[0] = rp[1] = rp[2] = rp[3] = stamp[15]; 424 } 425 426 stamp_mutex--; 427 } 428 #endif /* !RASOPS_SMALL */ 429
Indexes created Thu Oct 02 10:09:58 GMT 2025