rasops8.c revision 1.12
1 /* $NetBSD: rasops8.c,v 1.12 2001/11/13 07:00:23 lukem 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 1.12 2001/11/13 07:00:23 lukem Exp $"); 41 42 #include "opt_rasops.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/time.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 } 204 } 205 206 /* 207 * Put a single character. This is for 8-pixel wide fonts. 208 */ 209 static void 210 rasops8_putchar8(cookie, row, col, uc, attr) 211 void *cookie; 212 int row, col; 213 u_int uc; 214 long attr; 215 { 216 struct rasops_info *ri; 217 int height, fs; 218 int32_t *rp; 219 u_char *fr; 220 221 /* Can't risk remaking the stamp if it's already in use */ 222 if (stamp_mutex++) { 223 stamp_mutex--; 224 rasops8_putchar(cookie, row, col, uc, attr); 225 return; 226 } 227 228 ri = (struct rasops_info *)cookie; 229 230 #ifdef RASOPS_CLIPPING 231 if ((unsigned)row >= (unsigned)ri->ri_rows) { 232 stamp_mutex--; 233 return; 234 } 235 236 if ((unsigned)col >= (unsigned)ri->ri_cols) { 237 stamp_mutex--; 238 return; 239 } 240 #endif 241 242 /* Recompute stamp? */ 243 if (attr != stamp_attr) 244 rasops8_makestamp(ri, attr); 245 246 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 247 height = ri->ri_font->fontheight; 248 249 if (uc == ' ') { 250 while (height--) { 251 rp[0] = rp[1] = stamp[0]; 252 DELTA(rp, ri->ri_stride, int32_t *); 253 } 254 } else { 255 uc -= ri->ri_font->firstchar; 256 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 257 fs = ri->ri_font->stride; 258 259 while (height--) { 260 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 261 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 262 263 fr += fs; 264 DELTA(rp, ri->ri_stride, int32_t *); 265 } 266 } 267 268 /* Do underline */ 269 if ((attr & 1) != 0) { 270 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 271 rp[0] = rp[1] = stamp[15]; 272 } 273 274 stamp_mutex--; 275 } 276 277 /* 278 * Put a single character. This is for 12-pixel wide fonts. 279 */ 280 static void 281 rasops8_putchar12(cookie, row, col, uc, attr) 282 void *cookie; 283 int row, col; 284 u_int uc; 285 long attr; 286 { 287 struct rasops_info *ri; 288 int height, fs; 289 int32_t *rp; 290 u_char *fr; 291 292 /* Can't risk remaking the stamp if it's already in use */ 293 if (stamp_mutex++) { 294 stamp_mutex--; 295 rasops8_putchar(cookie, row, col, uc, attr); 296 return; 297 } 298 299 ri = (struct rasops_info *)cookie; 300 301 #ifdef RASOPS_CLIPPING 302 if ((unsigned)row >= (unsigned)ri->ri_rows) { 303 stamp_mutex--; 304 return; 305 } 306 307 if ((unsigned)col >= (unsigned)ri->ri_cols) { 308 stamp_mutex--; 309 return; 310 } 311 #endif 312 313 /* Recompute stamp? */ 314 if (attr != stamp_attr) 315 rasops8_makestamp(ri, attr); 316 317 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 318 height = ri->ri_font->fontheight; 319 320 if (uc == ' ') { 321 while (height--) { 322 int32_t c = stamp[0]; 323 324 rp[0] = rp[1] = rp[2] = c; 325 DELTA(rp, ri->ri_stride, int32_t *); 326 } 327 } else { 328 uc -= ri->ri_font->firstchar; 329 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 330 fs = ri->ri_font->stride; 331 332 while (height--) { 333 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 334 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 335 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 336 337 fr += fs; 338 DELTA(rp, ri->ri_stride, int32_t *); 339 } 340 } 341 342 /* Do underline */ 343 if ((attr & 1) != 0) { 344 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 345 rp[0] = rp[1] = rp[2] = stamp[15]; 346 } 347 348 stamp_mutex--; 349 } 350 351 /* 352 * Put a single character. This is for 16-pixel wide fonts. 353 */ 354 static void 355 rasops8_putchar16(cookie, row, col, uc, attr) 356 void *cookie; 357 int row, col; 358 u_int uc; 359 long attr; 360 { 361 struct rasops_info *ri; 362 int height, fs; 363 int32_t *rp; 364 u_char *fr; 365 366 /* Can't risk remaking the stamp if it's already in use */ 367 if (stamp_mutex++) { 368 stamp_mutex--; 369 rasops8_putchar(cookie, row, col, uc, attr); 370 return; 371 } 372 373 ri = (struct rasops_info *)cookie; 374 375 #ifdef RASOPS_CLIPPING 376 if ((unsigned)row >= (unsigned)ri->ri_rows) { 377 stamp_mutex--; 378 return; 379 } 380 381 if ((unsigned)col >= (unsigned)ri->ri_cols) { 382 stamp_mutex--; 383 return; 384 } 385 #endif 386 387 /* Recompute stamp? */ 388 if (attr != stamp_attr) 389 rasops8_makestamp(ri, attr); 390 391 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); 392 height = ri->ri_font->fontheight; 393 394 if (uc == ' ') { 395 while (height--) 396 rp[0] = rp[1] = rp[2] = rp[3] = stamp[0]; 397 } else { 398 uc -= ri->ri_font->firstchar; 399 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale; 400 fs = ri->ri_font->stride; 401 402 while (height--) { 403 rp[0] = STAMP_READ(STAMP_SHIFT(fr[0], 1) & STAMP_MASK); 404 rp[1] = STAMP_READ(STAMP_SHIFT(fr[0], 0) & STAMP_MASK); 405 rp[2] = STAMP_READ(STAMP_SHIFT(fr[1], 1) & STAMP_MASK); 406 rp[3] = STAMP_READ(STAMP_SHIFT(fr[1], 0) & STAMP_MASK); 407 408 fr += fs; 409 DELTA(rp, ri->ri_stride, int32_t *); 410 } 411 } 412 413 /* Do underline */ 414 if ((attr & 1) != 0) { 415 DELTA(rp, -(ri->ri_stride << 1), int32_t *); 416 rp[0] = rp[1] = rp[2] = rp[3] = stamp[15]; 417 } 418 419 stamp_mutex--; 420 } 421 #endif /* !RASOPS_SMALL */ 422
Indexes created Thu Sep 25 16:09:42 GMT 2025