rasops_bitops.h revision 1.10.8.1
1 /* $NetBSD: rasops_bitops.h,v 1.10.8.1 2009/04/28 07:36:27 skrll 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 lmask, rmask, lclr, rclr, clr; 42 struct rasops_info *ri; 43 int32_t *dp, *rp; 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 = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + ((col >> 3) & ~3)); 68 69 if ((col & 31) + num <= 32) { 70 lmask = ~rasops_pmask[col & 31][num]; 71 lclr = clr & ~lmask; 72 73 while (height--) { 74 dp = rp; 75 DELTA(rp, ri->ri_stride, int32_t *); 76 77 *dp = (*dp & lmask) | lclr; 78 } 79 } else { 80 lmask = rasops_rmask[col & 31]; 81 rmask = rasops_lmask[(col + num) & 31]; 82 83 if (lmask) 84 num = (num - (32 - (col & 31))) >> 5; 85 else 86 num = num >> 5; 87 88 lclr = clr & ~lmask; 89 rclr = clr & ~rmask; 90 91 while (height--) { 92 dp = rp; 93 DELTA(rp, ri->ri_stride, int32_t *); 94 95 if (lmask) { 96 *dp = (*dp & lmask) | lclr; 97 dp++; 98 } 99 100 for (cnt = num; cnt > 0; cnt--) 101 *dp++ = clr; 102 103 if (rmask) 104 *dp = (*dp & rmask) | rclr; 105 } 106 } 107 } 108 109 /* 110 * Actually paint the cursor. 111 */ 112 static void 113 NAME(do_cursor)(struct rasops_info *ri) 114 { 115 int lmask, rmask, height, row, col, num; 116 int32_t *dp, *rp; 117 118 row = ri->ri_crow; 119 col = ri->ri_ccol * ri->ri_font->fontwidth << PIXEL_SHIFT; 120 height = ri->ri_font->fontheight; 121 num = ri->ri_font->fontwidth << PIXEL_SHIFT; 122 rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3)); 123 124 if ((col & 31) + num <= 32) { 125 lmask = rasops_pmask[col & 31][num]; 126 127 while (height--) { 128 dp = rp; 129 DELTA(rp, ri->ri_stride, int32_t *); 130 *dp ^= lmask; 131 } 132 } else { 133 lmask = ~rasops_rmask[col & 31]; 134 rmask = ~rasops_lmask[(col + num) & 31]; 135 136 while (height--) { 137 dp = rp; 138 DELTA(rp, ri->ri_stride, int32_t *); 139 140 if (lmask != -1) 141 *dp++ ^= lmask; 142 143 if (rmask != -1) 144 *dp ^= rmask; 145 } 146 } 147 } 148 149 /* 150 * Copy columns. Ick! 151 */ 152 static void 153 NAME(copycols)(void *cookie, int row, int src, int dst, int num) 154 { 155 int tmp, lmask, rmask, height, lnum, rnum, sb, db, cnt, full; 156 int32_t *sp, *dp, *srp, *drp; 157 struct rasops_info *ri; 158 159 sp = NULL; /* XXX gcc */ 160 161 ri = (struct rasops_info *)cookie; 162 163 #ifdef RASOPS_CLIPPING 164 if (dst == src) 165 return; 166 167 /* Catches < 0 case too */ 168 if ((unsigned)row >= (unsigned)ri->ri_rows) 169 return; 170 171 if (src < 0) { 172 num += src; 173 src = 0; 174 } 175 176 if ((src + num) > ri->ri_cols) 177 num = ri->ri_cols - src; 178 179 if (dst < 0) { 180 num += dst; 181 dst = 0; 182 } 183 184 if ((dst + num) > ri->ri_cols) 185 num = ri->ri_cols - dst; 186 187 if (num <= 0) 188 return; 189 #endif 190 191 cnt = ri->ri_font->fontwidth << PIXEL_SHIFT; 192 src *= cnt; 193 dst *= cnt; 194 num *= cnt; 195 row *= ri->ri_yscale; 196 height = ri->ri_font->fontheight; 197 db = dst & 31; 198 199 if (db + num <= 32) { 200 /* Destination is contained within a single word */ 201 srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3)); 202 drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3)); 203 sb = src & 31; 204 205 while (height--) { 206 GETBITS(srp, sb, num, tmp); 207 PUTBITS(tmp, db, num, drp); 208 DELTA(srp, ri->ri_stride, int32_t *); 209 DELTA(drp, ri->ri_stride, int32_t *); 210 } 211 212 return; 213 } 214 215 lmask = rasops_rmask[db]; 216 rmask = rasops_lmask[(dst + num) & 31]; 217 lnum = (32 - db) & 31; 218 rnum = (dst + num) & 31; 219 220 if (lmask) 221 full = (num - (32 - (dst & 31))) >> 5; 222 else 223 full = num >> 5; 224 225 if (src < dst && src + num > dst) { 226 /* Copy right-to-left */ 227 sb = src & 31; 228 src = src + num; 229 dst = dst + num; 230 srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3)); 231 drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3)); 232 233 src = src & 31; 234 rnum = 32 - lnum; 235 db = dst & 31; 236 237 if ((src -= db) < 0) { 238 sp--; 239 src += 32; 240 } 241 242 while (height--) { 243 sp = srp; 244 dp = drp; 245 DELTA(srp, ri->ri_stride, int32_t *); 246 DELTA(drp, ri->ri_stride, int32_t *); 247 248 if (db) { 249 GETBITS(sp, src, db, tmp); 250 PUTBITS(tmp, 0, db, dp); 251 dp--; 252 sp--; 253 } 254 255 /* Now aligned to 32-bits wrt dp */ 256 for (cnt = full; cnt; cnt--, sp--) { 257 GETBITS(sp, src, 32, tmp); 258 *dp-- = tmp; 259 } 260 261 if (lmask) { 262 #if 0 263 if (src > sb) 264 sp++; 265 #endif 266 GETBITS(sp, sb, lnum, tmp); 267 PUTBITS(tmp, rnum, lnum, dp); 268 } 269 } 270 } else { 271 /* Copy left-to-right */ 272 srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3)); 273 drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3)); 274 db = dst & 31; 275 276 while (height--) { 277 sb = src & 31; 278 sp = srp; 279 dp = drp; 280 DELTA(srp, ri->ri_stride, int32_t *); 281 DELTA(drp, ri->ri_stride, int32_t *); 282 283 if (lmask) { 284 GETBITS(sp, sb, lnum, tmp); 285 PUTBITS(tmp, db, lnum, dp); 286 dp++; 287 288 if ((sb += lnum) > 31) { 289 sp++; 290 sb -= 32; 291 } 292 } 293 294 /* Now aligned to 32-bits wrt dp */ 295 for (cnt = full; cnt; cnt--, sp++) { 296 GETBITS(sp, sb, 32, tmp); 297 *dp++ = tmp; 298 } 299 300 if (rmask) { 301 GETBITS(sp, sb, rnum, tmp); 302 PUTBITS(tmp, 0, rnum, dp); 303 } 304 } 305 } 306 } 307 308 #endif /* _RASOPS_BITOPS_H_ */ 309
Indexes created Mon Sep 29 21:09:56 GMT 2025