rasops8.c revision 1.14
1 /* $NetBSD: rasops8.c,v 1.14 2002/01/31 11:18:07 uwe 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 1.14 2002/01/31 11:18:07 uwe 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 == LITTLE_ENDIAN 193 stamp[i] = (i & 8 ? fg : bg); 194 stamp[i] |= ((i & 4 ? fg : bg) << 8); 195 stamp[i] |= ((i & 2 ? fg : bg) << 16); 196 stamp[i] |= ((i & 1 ? fg : bg) << 24); 197 #else 198 stamp[i] = (i & 1 ? fg : bg); 199 stamp[i] |= ((i & 2 ? fg : bg) << 8); 200 stamp[i] |= ((i & 4 ? fg : bg) << 16); 201 stamp[i] |= ((i & 8 ? fg : bg) << 24); 202 #endif 203 if ((ri->ri_flg & RI_BSWAP) != 0) 204 stamp[i] = bswap32(stamp[i]); 205 } 206 } 207 208 /* 209 * Put a single character. This is for 8-pixel wide fonts. 210 */ 211 static void 212 rasops8_putchar8(cookie, row, col, uc, attr) 213 void *cookie; 214 int row, col; 215 u_int uc; 216 long attr; 217 { 218 struct rasops_info *ri; 219 int height, fs; 220 int32_t *rp; 221 u_char *fr; 222 223 /* Can't risk remaking the stamp if it's already in use */ 224 if (stamp_mutex++) { 225 stamp_mutex--; 226 rasops8_putchar(cookie, row, col, uc, attr); 227 return; 228 } 229 230 ri = (struct rasops_info *)cookie; 231 232 #ifdef RASOPS_CLIPPING 233 if ((unsigned)row >= (unsigned)ri->ri_rows) { 234 stamp_mutex--; 235 return; 236 } 237 238 if ((unsigned)col >= (unsigned)ri->ri_cols) { 239 stamp_mutex--; 240 return; 241 } 242 #endif 243 244 /* Recompute stamp? */ 245 if (attr != stamp_attr) 246 rasops8_makestamp(ri, attr); 247 248 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 249 height = ri->ri_font->fontheight; 250 251 if (uc == ' ') { 252 while (height--) { 253 rp[0] = rp[1] = stamp[0]; 254 DELTA(rp, ri->ri_stride, int32_t *); 255 } 256 } else { 257 uc -= ri->ri_font->firstchar; 258 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 259 fs = ri->ri_font->stride; 260 261 while (height--) { 262 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 263 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 264 265 fr += fs; 266 DELTA(rp, ri->ri_stride, int32_t *); 267 } 268 } 269 270 /* Do underline */ 271 if ((attr & 1) != 0) { 272 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 273 rp[0] = rp[1] = stamp[15]; 274 } 275 276 stamp_mutex--; 277 } 278 279 /* 280 * Put a single character. This is for 12-pixel wide fonts. 281 */ 282 static void 283 rasops8_putchar12(cookie, row, col, uc, attr) 284 void *cookie; 285 int row, col; 286 u_int uc; 287 long attr; 288 { 289 struct rasops_info *ri; 290 int height, fs; 291 int32_t *rp; 292 u_char *fr; 293 294 /* Can't risk remaking the stamp if it's already in use */ 295 if (stamp_mutex++) { 296 stamp_mutex--; 297 rasops8_putchar(cookie, row, col, uc, attr); 298 return; 299 } 300 301 ri = (struct rasops_info *)cookie; 302 303 #ifdef RASOPS_CLIPPING 304 if ((unsigned)row >= (unsigned)ri->ri_rows) { 305 stamp_mutex--; 306 return; 307 } 308 309 if ((unsigned)col >= (unsigned)ri->ri_cols) { 310 stamp_mutex--; 311 return; 312 } 313 #endif 314 315 /* Recompute stamp? */ 316 if (attr != stamp_attr) 317 rasops8_makestamp(ri, attr); 318 319 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 320 height = ri->ri_font->fontheight; 321 322 if (uc == ' ') { 323 while (height--) { 324 int32_t c = stamp[0]; 325 326 rp[0] = rp[1] = rp[2] = c; 327 DELTA(rp, ri->ri_stride, int32_t *); 328 } 329 } else { 330 uc -= ri->ri_font->firstchar; 331 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 332 fs = ri->ri_font->stride; 333 334 while (height--) { 335 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 336 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 337 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 338 339 fr += fs; 340 DELTA(rp, ri->ri_stride, int32_t *); 341 } 342 } 343 344 /* Do underline */ 345 if ((attr & 1) != 0) { 346 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 347 rp[0] = rp[1] = rp[2] = stamp[15]; 348 } 349 350 stamp_mutex--; 351 } 352 353 /* 354 * Put a single character. This is for 16-pixel wide fonts. 355 */ 356 static void 357 rasops8_putchar16(cookie, row, col, uc, attr) 358 void *cookie; 359 int row, col; 360 u_int uc; 361 long attr; 362 { 363 struct rasops_info *ri; 364 int height, fs; 365 int32_t *rp; 366 u_char *fr; 367 368 /* Can't risk remaking the stamp if it's already in use */ 369 if (stamp_mutex++) { 370 stamp_mutex--; 371 rasops8_putchar(cookie, row, col, uc, attr); 372 return; 373 } 374 375 ri = (struct rasops_info *)cookie; 376 377 #ifdef RASOPS_CLIPPING 378 if ((unsigned)row >= (unsigned)ri->ri_rows) { 379 stamp_mutex--; 380 return; 381 } 382 383 if ((unsigned)col >= (unsigned)ri->ri_cols) { 384 stamp_mutex--; 385 return; 386 } 387 #endif 388 389 /* Recompute stamp? */ 390 if (attr != stamp_attr) 391 rasops8_makestamp(ri, attr); 392 393 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 394 height = ri->ri_font->fontheight; 395 396 if (uc == ' ') { 397 while (height--) 398 rp[0] = rp[1] = rp[2] = rp[3] = stamp[0]; 399 } else { 400 uc -= ri->ri_font->firstchar; 401 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 402 fs = ri->ri_font->stride; 403 404 while (height--) { 405 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 406 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 407 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 408 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 409 410 fr += fs; 411 DELTA(rp, ri->ri_stride, int32_t *); 412 } 413 } 414 415 /* Do underline */ 416 if ((attr & 1) != 0) { 417 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 418 rp[0] = rp[1] = rp[2] = rp[3] = stamp[15]; 419 } 420 421 stamp_mutex--; 422 } 423 #endif /* !RASOPS_SMALL */ 424
Indexes created Wed Sep 24 22:09:59 GMT 2025