Annotation of sys/dev/rasops/rasops4.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: rasops4.c,v 1.7 2006/08/03 18:42:06 miod Exp $ */
! 2: /* $NetBSD: rasops4.c,v 1.4 2001/11/15 09:48:15 lukem Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Andrew Doran.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/time.h>
! 43: #include <machine/endian.h>
! 44:
! 45: #include <dev/wscons/wsdisplayvar.h>
! 46: #include <dev/wscons/wsconsio.h>
! 47: #include <dev/rasops/rasops.h>
! 48: #include <dev/rasops/rasops_masks.h>
! 49:
! 50: void rasops4_copycols(void *, int, int, int, int);
! 51: void rasops4_erasecols(void *, int, int, int, long);
! 52: void rasops4_do_cursor(struct rasops_info *);
! 53: void rasops4_putchar(void *, int, int col, u_int, long);
! 54: #ifndef RASOPS_SMALL
! 55: void rasops4_putchar8(void *, int, int col, u_int, long);
! 56: void rasops4_putchar12(void *, int, int col, u_int, long);
! 57: void rasops4_putchar16(void *, int, int col, u_int, long);
! 58: void rasops4_makestamp(struct rasops_info *, long);
! 59:
! 60: /*
! 61: * 4x1 stamp for optimized character blitting
! 62: */
! 63: static u_int16_t stamp[16];
! 64: static long stamp_attr;
! 65: static int stamp_mutex; /* XXX see note in README */
! 66: #endif
! 67:
! 68: /*
! 69: * Initialize rasops_info struct for this colordepth.
! 70: */
! 71: void
! 72: rasops4_init(ri)
! 73: struct rasops_info *ri;
! 74: {
! 75: rasops_masks_init();
! 76:
! 77: switch (ri->ri_font->fontwidth) {
! 78: #ifndef RASOPS_SMALL
! 79: case 8:
! 80: ri->ri_ops.putchar = rasops4_putchar8;
! 81: break;
! 82: case 12:
! 83: ri->ri_ops.putchar = rasops4_putchar12;
! 84: break;
! 85: case 16:
! 86: ri->ri_ops.putchar = rasops4_putchar16;
! 87: break;
! 88: #endif /* !RASOPS_SMALL */
! 89: default:
! 90: panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!");
! 91: ri->ri_ops.putchar = rasops4_putchar;
! 92: break;
! 93: }
! 94:
! 95: if ((ri->ri_font->fontwidth & 1) != 0) {
! 96: ri->ri_ops.erasecols = rasops4_erasecols;
! 97: ri->ri_ops.copycols = rasops4_copycols;
! 98: ri->ri_do_cursor = rasops4_do_cursor;
! 99: }
! 100: }
! 101:
! 102: #ifdef notyet
! 103: /*
! 104: * Paint a single character. This is the generic version, this is ugly.
! 105: */
! 106: void
! 107: rasops4_putchar(cookie, row, col, uc, attr)
! 108: void *cookie;
! 109: int row, col;
! 110: u_int uc;
! 111: long attr;
! 112: {
! 113: int height, width, fs, rs, fb, bg, fg, lmask, rmask;
! 114: struct rasops_info *ri;
! 115: int32_t *rp;
! 116: u_char *fr;
! 117:
! 118: ri = (struct rasops_info *)cookie;
! 119:
! 120: #ifdef RASOPS_CLIPPING
! 121: /* Catches 'row < 0' case too */
! 122: if ((unsigned)row >= (unsigned)ri->ri_rows)
! 123: return;
! 124:
! 125: if ((unsigned)col >= (unsigned)ri->ri_cols)
! 126: return;
! 127: #endif
! 128:
! 129: width = ri->ri_font->fontwidth << 1;
! 130: height = ri->ri_font->fontheight;
! 131: col *= width;
! 132: rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
! 133: col = col & 31;
! 134: rs = ri->ri_stride;
! 135:
! 136: bg = ri->ri_devcmap[(attr >> 16) & 0xf];
! 137: fg = ri->ri_devcmap[(attr >> 24) & 0xf];
! 138:
! 139: /* If fg and bg match this becomes a space character */
! 140: if (fg == bg || uc == ' ') {
! 141: uc = (u_int)-1;
! 142: fr = 0; /* shutup gcc */
! 143: fs = 0; /* shutup gcc */
! 144: } else {
! 145: uc -= ri->ri_font->firstchar;
! 146: fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
! 147: fs = ri->ri_font->stride;
! 148: }
! 149:
! 150: /* Single word, one mask */
! 151: if ((col + width) <= 32) {
! 152: rmask = rasops_pmask[col][width];
! 153: lmask = ~rmask;
! 154:
! 155: if (uc == (u_int)-1) {
! 156: bg &= rmask;
! 157:
! 158: while (height--) {
! 159: *rp = (*rp & lmask) | bg;
! 160: DELTA(rp, rs, int32_t *);
! 161: }
! 162: } else {
! 163: while (height--) {
! 164: /* get bits, mask */
! 165: /* compose sl */
! 166: /* mask sl */
! 167: /* put word */
! 168: }
! 169: }
! 170:
! 171: /* Do underline */
! 172: if (attr & 1) {
! 173: DELTA(rp, -(ri->ri_stride << 1), int32_t *);
! 174: *rp = (*rp & lmask) | (fg & rmask);
! 175: }
! 176: } else {
! 177: lmask = ~rasops_lmask[col];
! 178: rmask = ~rasops_rmask[(col + width) & 31];
! 179:
! 180: if (uc == (u_int)-1) {
! 181: bg = bg & ~lmask;
! 182: width = bg & ~rmask;
! 183:
! 184: while (height--) {
! 185: rp[0] = (rp[0] & lmask) | bg;
! 186: rp[1] = (rp[1] & rmask) | width;
! 187: DELTA(rp, rs, int32_t *);
! 188: }
! 189: } else {
! 190: width = 32 - col;
! 191:
! 192: /* NOT fontbits if bg is white */
! 193: while (height--) {
! 194: fb = ~(fr[3] | (fr[2] << 8) |
! 195: (fr[1] << 16) | (fr[0] << 24));
! 196:
! 197: rp[0] = (rp[0] & lmask)
! 198: | MBE((u_int)fb >> col);
! 199:
! 200: rp[1] = (rp[1] & rmask)
! 201: | (MBE((u_int)fb << width) & ~rmask);
! 202:
! 203: fr += fs;
! 204: DELTA(rp, rs, int32_t *);
! 205: }
! 206: }
! 207:
! 208: /* Do underline */
! 209: if (attr & 1) {
! 210: DELTA(rp, -(ri->ri_stride << 1), int32_t *);
! 211: rp[0] = (rp[0] & lmask) | (fg & ~lmask);
! 212: rp[1] = (rp[1] & rmask) | (fg & ~rmask);
! 213: }
! 214: }
! 215: }
! 216: #endif
! 217:
! 218: /*
! 219: * Put a single character. This is the generic version.
! 220: */
! 221: void
! 222: rasops4_putchar(cookie, row, col, uc, attr)
! 223: void *cookie;
! 224: int row, col;
! 225: u_int uc;
! 226: long attr;
! 227: {
! 228:
! 229: /* XXX punt */
! 230: }
! 231:
! 232: #ifndef RASOPS_SMALL
! 233: /*
! 234: * Recompute the blitting stamp.
! 235: */
! 236: void
! 237: rasops4_makestamp(ri, attr)
! 238: struct rasops_info *ri;
! 239: long attr;
! 240: {
! 241: int i, fg, bg;
! 242:
! 243: fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xf;
! 244: bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xf;
! 245: stamp_attr = attr;
! 246:
! 247: for (i = 0; i < 16; i++) {
! 248: #if BYTE_ORDER == LITTLE_ENDIAN
! 249: stamp[i] = (i & 1 ? fg : bg) << 8;
! 250: stamp[i] |= (i & 2 ? fg : bg) << 12;
! 251: stamp[i] |= (i & 4 ? fg : bg) << 0;
! 252: stamp[i] |= (i & 8 ? fg : bg) << 4;
! 253: #else
! 254: stamp[i] = (i & 1 ? fg : bg) << 0;
! 255: stamp[i] |= (i & 2 ? fg : bg) << 4;
! 256: stamp[i] |= (i & 4 ? fg : bg) << 8;
! 257: stamp[i] |= (i & 8 ? fg : bg) << 12;
! 258: #endif
! 259: }
! 260: }
! 261:
! 262: /*
! 263: * Put a single character. This is for 8-pixel wide fonts.
! 264: */
! 265: void
! 266: rasops4_putchar8(cookie, row, col, uc, attr)
! 267: void *cookie;
! 268: int row, col;
! 269: u_int uc;
! 270: long attr;
! 271: {
! 272: struct rasops_info *ri;
! 273: int height, fs, rs;
! 274: u_char *fr;
! 275: u_int16_t *rp;
! 276:
! 277: /* Can't risk remaking the stamp if it's already in use */
! 278: if (stamp_mutex++) {
! 279: stamp_mutex--;
! 280: rasops4_putchar(cookie, row, col, uc, attr);
! 281: return;
! 282: }
! 283:
! 284: ri = (struct rasops_info *)cookie;
! 285:
! 286: #ifdef RASOPS_CLIPPING
! 287: /* Catches 'row < 0' case too */
! 288: if ((unsigned)row >= (unsigned)ri->ri_rows) {
! 289: stamp_mutex--;
! 290: return;
! 291: }
! 292:
! 293: if ((unsigned)col >= (unsigned)ri->ri_cols) {
! 294: stamp_mutex--;
! 295: return;
! 296: }
! 297: #endif
! 298:
! 299: rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
! 300: height = ri->ri_font->fontheight;
! 301: rs = ri->ri_stride / sizeof(*rp);
! 302:
! 303: /* Recompute stamp? */
! 304: if (attr != stamp_attr)
! 305: rasops4_makestamp(ri, attr);
! 306:
! 307: if (uc == ' ') {
! 308: u_int16_t c = stamp[0];
! 309: while (height--) {
! 310: rp[0] = c;
! 311: rp[1] = c;
! 312: rp += rs;
! 313: }
! 314: } else {
! 315: uc -= ri->ri_font->firstchar;
! 316: fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
! 317: fs = ri->ri_font->stride;
! 318:
! 319: while (height--) {
! 320: rp[0] = stamp[(*fr >> 4) & 0xf];
! 321: rp[1] = stamp[*fr & 0xf];
! 322: fr += fs;
! 323: rp += rs;
! 324: }
! 325: }
! 326:
! 327: /* Do underline */
! 328: if ((attr & 1) != 0) {
! 329: rp -= (rs << 1);
! 330: rp[0] = stamp[15];
! 331: rp[1] = stamp[15];
! 332: }
! 333:
! 334: stamp_mutex--;
! 335: }
! 336:
! 337: /*
! 338: * Put a single character. This is for 12-pixel wide fonts.
! 339: */
! 340: void
! 341: rasops4_putchar12(cookie, row, col, uc, attr)
! 342: void *cookie;
! 343: int row, col;
! 344: u_int uc;
! 345: long attr;
! 346: {
! 347: struct rasops_info *ri;
! 348: int height, fs, rs;
! 349: u_char *fr;
! 350: u_int16_t *rp;
! 351:
! 352: /* Can't risk remaking the stamp if it's already in use */
! 353: if (stamp_mutex++) {
! 354: stamp_mutex--;
! 355: rasops4_putchar(cookie, row, col, uc, attr);
! 356: return;
! 357: }
! 358:
! 359: ri = (struct rasops_info *)cookie;
! 360:
! 361: #ifdef RASOPS_CLIPPING
! 362: /* Catches 'row < 0' case too */
! 363: if ((unsigned)row >= (unsigned)ri->ri_rows) {
! 364: stamp_mutex--;
! 365: return;
! 366: }
! 367:
! 368: if ((unsigned)col >= (unsigned)ri->ri_cols) {
! 369: stamp_mutex--;
! 370: return;
! 371: }
! 372: #endif
! 373:
! 374: rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
! 375: height = ri->ri_font->fontheight;
! 376: rs = ri->ri_stride / sizeof(*rp);
! 377:
! 378: /* Recompute stamp? */
! 379: if (attr != stamp_attr)
! 380: rasops4_makestamp(ri, attr);
! 381:
! 382: if (uc == ' ') {
! 383: u_int16_t c = stamp[0];
! 384: while (height--) {
! 385: rp[0] = c;
! 386: rp[1] = c;
! 387: rp[2] = c;
! 388: rp += rs;
! 389: }
! 390: } else {
! 391: uc -= ri->ri_font->firstchar;
! 392: fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
! 393: fs = ri->ri_font->stride;
! 394:
! 395: while (height--) {
! 396: rp[0] = stamp[(fr[0] >> 4) & 0xf];
! 397: rp[1] = stamp[fr[0] & 0xf];
! 398: rp[2] = stamp[(fr[1] >> 4) & 0xf];
! 399: fr += fs;
! 400: rp += rs;
! 401: }
! 402: }
! 403:
! 404: /* Do underline */
! 405: if ((attr & 1) != 0) {
! 406: rp -= (rs << 1);
! 407: rp[0] = stamp[15];
! 408: rp[1] = stamp[15];
! 409: rp[2] = stamp[15];
! 410: }
! 411:
! 412: stamp_mutex--;
! 413: }
! 414:
! 415: /*
! 416: * Put a single character. This is for 16-pixel wide fonts.
! 417: */
! 418: void
! 419: rasops4_putchar16(cookie, row, col, uc, attr)
! 420: void *cookie;
! 421: int row, col;
! 422: u_int uc;
! 423: long attr;
! 424: {
! 425: struct rasops_info *ri;
! 426: int height, fs, rs;
! 427: u_char *fr;
! 428: u_int16_t *rp;
! 429:
! 430: /* Can't risk remaking the stamp if it's already in use */
! 431: if (stamp_mutex++) {
! 432: stamp_mutex--;
! 433: rasops4_putchar(cookie, row, col, uc, attr);
! 434: return;
! 435: }
! 436:
! 437: ri = (struct rasops_info *)cookie;
! 438:
! 439: #ifdef RASOPS_CLIPPING
! 440: /* Catches 'row < 0' case too */
! 441: if ((unsigned)row >= (unsigned)ri->ri_rows) {
! 442: stamp_mutex--;
! 443: return;
! 444: }
! 445:
! 446: if ((unsigned)col >= (unsigned)ri->ri_cols) {
! 447: stamp_mutex--;
! 448: return;
! 449: }
! 450: #endif
! 451:
! 452: rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
! 453: height = ri->ri_font->fontheight;
! 454: rs = ri->ri_stride / sizeof(*rp);
! 455:
! 456: /* Recompute stamp? */
! 457: if (attr != stamp_attr)
! 458: rasops4_makestamp(ri, attr);
! 459:
! 460: if (uc == ' ') {
! 461: u_int16_t c = stamp[0];
! 462: while (height--) {
! 463: rp[0] = c;
! 464: rp[1] = c;
! 465: rp[2] = c;
! 466: rp[3] = c;
! 467: rp += rs;
! 468: }
! 469: } else {
! 470: uc -= ri->ri_font->firstchar;
! 471: fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
! 472: fs = ri->ri_font->stride;
! 473:
! 474: while (height--) {
! 475: rp[0] = stamp[(fr[0] >> 4) & 0xf];
! 476: rp[1] = stamp[fr[0] & 0xf];
! 477: rp[2] = stamp[(fr[1] >> 4) & 0xf];
! 478: rp[3] = stamp[fr[1] & 0xf];
! 479: fr += fs;
! 480: rp += rs;
! 481: }
! 482: }
! 483:
! 484: /* Do underline */
! 485: if ((attr & 1) != 0) {
! 486: rp -= (rs << 1);
! 487: rp[0] = stamp[15];
! 488: rp[1] = stamp[15];
! 489: rp[2] = stamp[15];
! 490: rp[3] = stamp[15];
! 491: }
! 492:
! 493: stamp_mutex--;
! 494: }
! 495: #endif /* !RASOPS_SMALL */
! 496:
! 497: /*
! 498: * Grab routines common to depths where (bpp < 8)
! 499: */
! 500: #define NAME(ident) rasops4_##ident
! 501: #define PIXEL_SHIFT 2
! 502:
! 503: #include <dev/rasops/rasops_bitops.h>
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