| 1 | /* $NetBSD: rasops_bitops.h,v 1.15 2013/12/02 14:05:51 tsutsui 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 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #ifndef _RASOPS_BITOPS_H_ |
| 33 | #define _RASOPS_BITOPS_H_ 1 |
| 34 | |
| 35 | /* |
| 36 | * Erase columns. |
| 37 | */ |
| 38 | static void |
| 39 | NAME(erasecols)(void *cookie, int row, int col, int num, long attr) |
| 40 | { |
| 41 | int lclr, rclr, clr; |
| 42 | struct rasops_info *ri; |
| 43 | uint32_t *dp, *rp, *hrp = NULL, *hp = NULL, tmp, lmask, rmask; |
| 44 | int height, cnt; |
| 45 | |
| 46 | ri = (struct rasops_info *)cookie; |
| 47 | |
| 48 | #ifdef RASOPS_CLIPPING |
| 49 | if ((unsigned)row >= (unsigned)ri->ri_rows) |
| 50 | return; |
| 51 | |
| 52 | if (col < 0) { |
| 53 | num += col; |
| 54 | col = 0; |
| 55 | } |
| 56 | |
| 57 | if ((col + num) > ri->ri_cols) |
| 58 | num = ri->ri_cols - col; |
| 59 | |
| 60 | if (num <= 0) |
| 61 | return; |
| 62 | #endif |
| 63 | col *= ri->ri_font->fontwidth << PIXEL_SHIFT; |
| 64 | num *= ri->ri_font->fontwidth << PIXEL_SHIFT; |
| 65 | height = ri->ri_font->fontheight; |
| 66 | clr = ri->ri_devcmap[(attr >> 16) & 0xf]; |
| 67 | rp = (uint32_t *)(ri->ri_bits + row*ri->ri_yscale + ((col >> 3) & ~3)); |
| 68 | if (ri->ri_hwbits) |
| 69 | hrp = (uint32_t *)(ri->ri_hwbits + row*ri->ri_yscale + |
| 70 | ((col >> 3) & ~3)); |
| 71 | if ((col & 31) + num <= 32) { |
| 72 | lmask = ~rasops_pmask[col & 31][num]; |
| 73 | lclr = clr & ~lmask; |
| 74 | |
| 75 | while (height--) { |
| 76 | dp = rp; |
| 77 | DELTA(rp, ri->ri_stride, uint32_t *); |
| 78 | |
| 79 | tmp = (*dp & lmask) | lclr; |
| 80 | *dp = tmp; |
| 81 | if (ri->ri_hwbits) { |
| 82 | *hrp = tmp; |
| 83 | DELTA(hrp, ri->ri_stride, uint32_t *); |
| 84 | } |
| 85 | } |
| 86 | } else { |
| 87 | lmask = rasops_rmask[col & 31]; |
| 88 | rmask = rasops_lmask[(col + num) & 31]; |
| 89 | |
| 90 | if (lmask) |
| 91 | num = (num - (32 - (col & 31))) >> 5; |
| 92 | else |
| 93 | num = num >> 5; |
| 94 | |
| 95 | lclr = clr & ~lmask; |
| 96 | rclr = clr & ~rmask; |
| 97 | |
| 98 | while (height--) { |
| 99 | dp = rp; |
| 100 | DELTA(rp, ri->ri_stride, uint32_t *); |
| 101 | if (ri->ri_hwbits) { |
| 102 | hp = hrp; |
| 103 | DELTA(hrp, ri->ri_stride, uint32_t *); |
| 104 | } |
| 105 | |
| 106 | if (lmask) { |
| 107 | tmp = (*dp & lmask) | lclr; |
| 108 | *dp = tmp; |
| 109 | dp++; |
| 110 | if (ri->ri_hwbits) { |
| 111 | *hp = tmp; |
| 112 | hp++; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | for (cnt = num; cnt > 0; cnt--) |
| 117 | *dp++ = clr; |
| 118 | if (ri->ri_hwbits) { |
| 119 | for (cnt = num; cnt > 0; cnt--) |
| 120 | *hp++ = clr; |
| 121 | } |
| 122 | |
| 123 | if (rmask) { |
| 124 | tmp = (*dp & rmask) | rclr; |
| 125 | *dp = tmp; |
| 126 | if (ri->ri_hwbits) |
| 127 | *hp = tmp; |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | * Actually paint the cursor. |
| 135 | */ |
| 136 | static void |
| 137 | NAME(do_cursor)(struct rasops_info *ri) |
| 138 | { |
| 139 | int height, row, col, num; |
| 140 | uint32_t *dp, *rp, *hp = NULL, *hrp = NULL, tmp, lmask, rmask; |
| 141 | |
| 142 | row = ri->ri_crow; |
| 143 | col = ri->ri_ccol * ri->ri_font->fontwidth << PIXEL_SHIFT; |
| 144 | height = ri->ri_font->fontheight; |
| 145 | num = ri->ri_font->fontwidth << PIXEL_SHIFT; |
| 146 | rp = (uint32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3)); |
| 147 | if (ri->ri_hwbits) |
| 148 | hrp = (uint32_t *)(ri->ri_hwbits + row * ri->ri_yscale + |
| 149 | ((col >> 3) & ~3)); |
| 150 | |
| 151 | if ((col & 31) + num <= 32) { |
| 152 | lmask = rasops_pmask[col & 31][num]; |
| 153 | |
| 154 | while (height--) { |
| 155 | dp = rp; |
| 156 | DELTA(rp, ri->ri_stride, uint32_t *); |
| 157 | *dp ^= lmask; |
| 158 | } |
| 159 | if (ri->ri_hwbits) { |
| 160 | height = ri->ri_font->fontheight; |
| 161 | while (height--) { |
| 162 | hp = hrp; |
| 163 | DELTA(hrp, ri->ri_stride, uint32_t *); |
| 164 | *hp ^= lmask; |
| 165 | } |
| 166 | } |
| 167 | } else { |
| 168 | lmask = ~rasops_rmask[col & 31]; |
| 169 | rmask = ~rasops_lmask[(col + num) & 31]; |
| 170 | |
| 171 | while (height--) { |
| 172 | dp = rp; |
| 173 | DELTA(rp, ri->ri_stride, uint32_t *); |
| 174 | if (ri->ri_hwbits) { |
| 175 | hp = hrp; |
| 176 | DELTA(hrp, ri->ri_stride, uint32_t *); |
| 177 | } |
| 178 | if (lmask != -1) { |
| 179 | tmp = *dp ^ lmask; |
| 180 | *dp = tmp; |
| 181 | dp++; |
| 182 | if (ri->ri_hwbits) { |
| 183 | *hp = tmp; |
| 184 | hp++; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if (rmask != -1) { |
| 189 | tmp = *dp ^ rmask; |
| 190 | *dp = tmp; |
| 191 | if (ri->ri_hwbits) |
| 192 | *hp = tmp; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /* |
| 199 | * Copy columns. Ick! |
| 200 | */ |
| 201 | static void |
| 202 | NAME(copycols)(void *cookie, int row, int src, int dst, int num) |
| 203 | { |
| 204 | int height, lnum, rnum, sb, db, cnt, full; |
| 205 | uint32_t tmp, lmask, rmask; |
| 206 | uint32_t *sp, *dp, *srp, *drp, *dhp = NULL, *hp = NULL; |
| 207 | struct rasops_info *ri; |
| 208 | |
| 209 | ri = (struct rasops_info *)cookie; |
| 210 | |
| 211 | #ifdef RASOPS_CLIPPING |
| 212 | if (dst == src) |
| 213 | return; |
| 214 | |
| 215 | /* Catches < 0 case too */ |
| 216 | if ((unsigned)row >= (unsigned)ri->ri_rows) |
| 217 | return; |
| 218 | |
| 219 | if (src < 0) { |
| 220 | num += src; |
| 221 | src = 0; |
| 222 | } |
| 223 | |
| 224 | if ((src + num) > ri->ri_cols) |
| 225 | num = ri->ri_cols - src; |
| 226 | |
| 227 | if (dst < 0) { |
| 228 | num += dst; |
| 229 | dst = 0; |
| 230 | } |
| 231 | |
| 232 | if ((dst + num) > ri->ri_cols) |
| 233 | num = ri->ri_cols - dst; |
| 234 | |
| 235 | if (num <= 0) |
| 236 | return; |
| 237 | #endif |
| 238 | |
| 239 | cnt = ri->ri_font->fontwidth << PIXEL_SHIFT; |
| 240 | src *= cnt; |
| 241 | dst *= cnt; |
| 242 | num *= cnt; |
| 243 | row *= ri->ri_yscale; |
| 244 | height = ri->ri_font->fontheight; |
| 245 | db = dst & 31; |
| 246 | |
| 247 | if (db + num <= 32) { |
| 248 | /* Destination is contained within a single word */ |
| 249 | srp = (uint32_t *)(ri->ri_bits + row + ((src >> 3) & ~3)); |
| 250 | drp = (uint32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3)); |
| 251 | if (ri->ri_hwbits) |
| 252 | dhp = (uint32_t *)(ri->ri_hwbits + row + |
| 253 | ((dst >> 3) & ~3)); |
| 254 | sb = src & 31; |
| 255 | |
| 256 | while (height--) { |
| 257 | GETBITS(srp, sb, num, tmp); |
| 258 | PUTBITS(tmp, db, num, drp); |
| 259 | if (ri->ri_hwbits) { |
| 260 | PUTBITS(tmp, db, num, dhp); |
| 261 | DELTA(dhp, ri->ri_stride, uint32_t *); |
| 262 | } |
| 263 | DELTA(srp, ri->ri_stride, uint32_t *); |
| 264 | DELTA(drp, ri->ri_stride, uint32_t *); |
| 265 | } |
| 266 | |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | lmask = rasops_rmask[db]; |
| 271 | rmask = rasops_lmask[(dst + num) & 31]; |
| 272 | lnum = (32 - db) & 31; |
| 273 | rnum = (dst + num) & 31; |
| 274 | |
| 275 | if (lmask) |
| 276 | full = (num - (32 - (dst & 31))) >> 5; |
| 277 | else |
| 278 | full = num >> 5; |
| 279 | |
| 280 | if (src < dst && src + num > dst) { |
| 281 | /* Copy right-to-left */ |
| 282 | bool sbover; |
| 283 | int sboff; |
| 284 | |
| 285 | srp = (uint32_t *)(ri->ri_bits + row + |
| 286 | (((src + num) >> 3) & ~3)); |
| 287 | drp = (uint32_t *)(ri->ri_bits + row + |
| 288 | (((dst + num) >> 3) & ~3)); |
| 289 | if (ri->ri_hwbits) |
| 290 | dhp = (uint32_t *)(ri->ri_hwbits + row + |
| 291 | (((dst + num) >> 3) & ~3)); |
| 292 | |
| 293 | sb = src & 31; |
| 294 | sbover = (sb + lnum) >= 32; |
| 295 | sboff = (src + num) & 31; |
| 296 | if ((sboff -= rnum) < 0) { |
| 297 | srp--; |
| 298 | sboff += 32; |
| 299 | } |
| 300 | |
| 301 | while (height--) { |
| 302 | sp = srp; |
| 303 | dp = drp; |
| 304 | if (ri->ri_hwbits) { |
| 305 | hp = dhp; |
| 306 | DELTA(dhp, ri->ri_stride, uint32_t *); |
| 307 | } |
| 308 | DELTA(srp, ri->ri_stride, uint32_t *); |
| 309 | DELTA(drp, ri->ri_stride, uint32_t *); |
| 310 | |
| 311 | if (rnum) { |
| 312 | GETBITS(sp, sboff, rnum, tmp); |
| 313 | PUTBITS(tmp, 0, rnum, dp); |
| 314 | if (ri->ri_hwbits) { |
| 315 | PUTBITS(tmp, 0, rnum, hp); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | /* Now aligned to 32-bits wrt dp */ |
| 320 | for (cnt = full; cnt; cnt--) { |
| 321 | --dp; |
| 322 | --sp; |
| 323 | GETBITS(sp, sboff, 32, tmp); |
| 324 | *dp = tmp; |
| 325 | if (ri->ri_hwbits) { |
| 326 | --hp; |
| 327 | *hp = tmp; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | if (lmask) { |
| 332 | if (sbover) |
| 333 | --sp; |
| 334 | --dp; |
| 335 | GETBITS(sp, sb, lnum, tmp); |
| 336 | PUTBITS(tmp, db, lnum, dp); |
| 337 | if (ri->ri_hwbits) |
| 338 | PUTBITS(tmp, db, lnum, hp); |
| 339 | } |
| 340 | } |
| 341 | } else { |
| 342 | /* Copy left-to-right */ |
| 343 | srp = (uint32_t *)(ri->ri_bits + row + ((src >> 3) & ~3)); |
| 344 | drp = (uint32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3)); |
| 345 | if (ri->ri_hwbits) |
| 346 | dhp = (uint32_t *)(ri->ri_hwbits + row + |
| 347 | ((dst >> 3) & ~3)); |
| 348 | db = dst & 31; |
| 349 | |
| 350 | while (height--) { |
| 351 | sb = src & 31; |
| 352 | sp = srp; |
| 353 | dp = drp; |
| 354 | if (ri->ri_hwbits) { |
| 355 | hp = dhp; |
| 356 | DELTA(dhp, ri->ri_stride, uint32_t *); |
| 357 | } |
| 358 | DELTA(srp, ri->ri_stride, uint32_t *); |
| 359 | DELTA(drp, ri->ri_stride, uint32_t *); |
| 360 | |
| 361 | if (lmask) { |
| 362 | GETBITS(sp, sb, lnum, tmp); |
| 363 | PUTBITS(tmp, db, lnum, dp); |
| 364 | dp++; |
| 365 | if (ri->ri_hwbits) { |
| 366 | PUTBITS(tmp, db, lnum, hp); |
| 367 | hp++; |
| 368 | } |
| 369 | |
| 370 | if ((sb += lnum) > 31) { |
| 371 | sp++; |
| 372 | sb -= 32; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | /* Now aligned to 32-bits wrt dp */ |
| 377 | for (cnt = full; cnt; cnt--, sp++) { |
| 378 | GETBITS(sp, sb, 32, tmp); |
| 379 | *dp++ = tmp; |
| 380 | if (ri->ri_hwbits) |
| 381 | *hp++ = tmp; |
| 382 | } |
| 383 | |
| 384 | if (rmask) { |
| 385 | GETBITS(sp, sb, rnum, tmp); |
| 386 | PUTBITS(tmp, 0, rnum, dp); |
| 387 | if (ri->ri_hwbits) |
| 388 | PUTBITS(tmp, 0, rnum, hp); |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | #endif /* _RASOPS_BITOPS_H_ */ |
| 395 | |