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1.1 ! nbrk 1: /* $OpenBSD: rasops_bitops.h,v 1.3 2003/02/12 20:53:59 henric Exp $ */
! 2: /* $NetBSD: rasops_bitops.h,v 1.6 2000/04/12 14:22:30 pk 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: #ifndef _RASOPS_BITOPS_H_
! 41: #define _RASOPS_BITOPS_H_ 1
! 42:
! 43: /*
! 44: * Erase columns.
! 45: */
! 46: void
! 47: NAME(erasecols)(cookie, row, col, num, attr)
! 48: void *cookie;
! 49: int row, col, num;
! 50: long attr;
! 51: {
! 52: int lmask, rmask, lclr, rclr, clr;
! 53: struct rasops_info *ri;
! 54: int32_t *dp, *rp;
! 55: int height, cnt;
! 56:
! 57: ri = (struct rasops_info *)cookie;
! 58:
! 59: #ifdef RASOPS_CLIPPING
! 60: if ((unsigned)row >= (unsigned)ri->ri_rows)
! 61: return;
! 62:
! 63: if (col < 0) {
! 64: num += col;
! 65: col = 0;
! 66: }
! 67:
! 68: if ((col + num) > ri->ri_cols)
! 69: num = ri->ri_cols - col;
! 70:
! 71: if (num <= 0)
! 72: return;
! 73: #endif
! 74: col *= ri->ri_font->fontwidth << PIXEL_SHIFT;
! 75: num *= ri->ri_font->fontwidth << PIXEL_SHIFT;
! 76: height = ri->ri_font->fontheight;
! 77: clr = ri->ri_devcmap[(attr >> 16) & 0xf];
! 78: rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + ((col >> 3) & ~3));
! 79:
! 80: if ((col & 31) + num <= 32) {
! 81: lmask = ~rasops_pmask[col & 31][num];
! 82: lclr = clr & ~lmask;
! 83:
! 84: while (height--) {
! 85: dp = rp;
! 86: DELTA(rp, ri->ri_stride, int32_t *);
! 87:
! 88: *dp = (*dp & lmask) | lclr;
! 89: }
! 90: } else {
! 91: lmask = rasops_rmask[col & 31];
! 92: rmask = rasops_lmask[(col + num) & 31];
! 93:
! 94: if (lmask)
! 95: num = (num - (32 - (col & 31))) >> 5;
! 96: else
! 97: num = num >> 5;
! 98:
! 99: lclr = clr & ~lmask;
! 100: rclr = clr & ~rmask;
! 101:
! 102: while (height--) {
! 103: dp = rp;
! 104: DELTA(rp, ri->ri_stride, int32_t *);
! 105:
! 106: if (lmask) {
! 107: *dp = (*dp & lmask) | lclr;
! 108: dp++;
! 109: }
! 110:
! 111: for (cnt = num; cnt > 0; cnt--)
! 112: *dp++ = clr;
! 113:
! 114: if (rmask)
! 115: *dp = (*dp & rmask) | rclr;
! 116: }
! 117: }
! 118: }
! 119:
! 120: /*
! 121: * Actually paint the cursor.
! 122: */
! 123: void
! 124: NAME(do_cursor)(ri)
! 125: struct rasops_info *ri;
! 126: {
! 127: int lmask, rmask, height, row, col, num;
! 128: int32_t *dp, *rp;
! 129:
! 130: row = ri->ri_crow;
! 131: col = ri->ri_ccol * ri->ri_font->fontwidth << PIXEL_SHIFT;
! 132: height = ri->ri_font->fontheight;
! 133: num = ri->ri_font->fontwidth << PIXEL_SHIFT;
! 134: rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
! 135:
! 136: if ((col & 31) + num <= 32) {
! 137: lmask = rasops_pmask[col & 31][num];
! 138:
! 139: while (height--) {
! 140: dp = rp;
! 141: DELTA(rp, ri->ri_stride, int32_t *);
! 142: *dp ^= lmask;
! 143: }
! 144: } else {
! 145: lmask = ~rasops_rmask[col & 31];
! 146: rmask = ~rasops_lmask[(col + num) & 31];
! 147:
! 148: while (height--) {
! 149: dp = rp;
! 150: DELTA(rp, ri->ri_stride, int32_t *);
! 151:
! 152: if (lmask != -1)
! 153: *dp++ ^= lmask;
! 154:
! 155: if (rmask != -1)
! 156: *dp ^= rmask;
! 157: }
! 158: }
! 159: }
! 160:
! 161: /*
! 162: * Copy columns. Ick!
! 163: */
! 164: void
! 165: NAME(copycols)(cookie, row, src, dst, num)
! 166: void *cookie;
! 167: int row, src, dst, num;
! 168: {
! 169: int tmp, lmask, rmask, height, lnum, rnum, sb, db, cnt, full;
! 170: int32_t *sp, *dp, *srp, *drp;
! 171: struct rasops_info *ri;
! 172:
! 173: ri = (struct rasops_info *)cookie;
! 174:
! 175: #ifdef RASOPS_CLIPPING
! 176: if (dst == src)
! 177: return;
! 178:
! 179: /* Catches < 0 case too */
! 180: if ((unsigned)row >= (unsigned)ri->ri_rows)
! 181: return;
! 182:
! 183: if (src < 0) {
! 184: num += src;
! 185: src = 0;
! 186: }
! 187:
! 188: if ((src + num) > ri->ri_cols)
! 189: num = ri->ri_cols - src;
! 190:
! 191: if (dst < 0) {
! 192: num += dst;
! 193: dst = 0;
! 194: }
! 195:
! 196: if ((dst + num) > ri->ri_cols)
! 197: num = ri->ri_cols - dst;
! 198:
! 199: if (num <= 0)
! 200: return;
! 201: #endif
! 202:
! 203: cnt = ri->ri_font->fontwidth << PIXEL_SHIFT;
! 204: src *= cnt;
! 205: dst *= cnt;
! 206: num *= cnt;
! 207: row *= ri->ri_yscale;
! 208: height = ri->ri_font->fontheight;
! 209: db = dst & 31;
! 210:
! 211: if (db + num <= 32) {
! 212: /* Destination is contained within a single word */
! 213: srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3));
! 214: drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3));
! 215: sb = src & 31;
! 216:
! 217: while (height--) {
! 218: GETBITS(srp, sb, num, tmp);
! 219: PUTBITS(tmp, db, num, drp);
! 220: DELTA(srp, ri->ri_stride, int32_t *);
! 221: DELTA(drp, ri->ri_stride, int32_t *);
! 222: }
! 223:
! 224: return;
! 225: }
! 226:
! 227: lmask = rasops_rmask[db];
! 228: rmask = rasops_lmask[(dst + num) & 31];
! 229: lnum = (32 - db) & 31;
! 230: rnum = (dst + num) & 31;
! 231:
! 232: if (lmask)
! 233: full = (num - (32 - (dst & 31))) >> 5;
! 234: else
! 235: full = num >> 5;
! 236:
! 237: if (src < dst && src + num > dst) {
! 238: /* Copy right-to-left */
! 239: sb = src & 31;
! 240: src = src + num;
! 241: dst = dst + num;
! 242: srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3));
! 243: drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3));
! 244:
! 245: src = src & 31;
! 246: rnum = 32 - lnum;
! 247: db = dst & 31;
! 248:
! 249: if ((src -= db) < 0) {
! 250: sp--;
! 251: src += 32;
! 252: }
! 253:
! 254: while (height--) {
! 255: sp = srp;
! 256: dp = drp;
! 257: DELTA(srp, ri->ri_stride, int32_t *);
! 258: DELTA(drp, ri->ri_stride, int32_t *);
! 259:
! 260: if (db) {
! 261: GETBITS(sp, src, db, tmp);
! 262: PUTBITS(tmp, 0, db, dp);
! 263: dp--;
! 264: sp--;
! 265: }
! 266:
! 267: /* Now aligned to 32-bits wrt dp */
! 268: for (cnt = full; cnt; cnt--, sp--) {
! 269: GETBITS(sp, src, 32, tmp);
! 270: *dp-- = tmp;
! 271: }
! 272:
! 273: if (lmask) {
! 274: #if 0
! 275: if (src > sb)
! 276: sp++;
! 277: #endif
! 278: GETBITS(sp, sb, lnum, tmp);
! 279: PUTBITS(tmp, rnum, lnum, dp);
! 280: }
! 281: }
! 282: } else {
! 283: /* Copy left-to-right */
! 284: srp = (int32_t *)(ri->ri_bits + row + ((src >> 3) & ~3));
! 285: drp = (int32_t *)(ri->ri_bits + row + ((dst >> 3) & ~3));
! 286: db = dst & 31;
! 287:
! 288: while (height--) {
! 289: sb = src & 31;
! 290: sp = srp;
! 291: dp = drp;
! 292: DELTA(srp, ri->ri_stride, int32_t *);
! 293: DELTA(drp, ri->ri_stride, int32_t *);
! 294:
! 295: if (lmask) {
! 296: GETBITS(sp, sb, lnum, tmp);
! 297: PUTBITS(tmp, db, lnum, dp);
! 298: dp++;
! 299:
! 300: if ((sb += lnum) > 31) {
! 301: sp++;
! 302: sb -= 32;
! 303: }
! 304: }
! 305:
! 306: /* Now aligned to 32-bits wrt dp */
! 307: for (cnt = full; cnt; cnt--, sp++) {
! 308: GETBITS(sp, sb, 32, tmp);
! 309: *dp++ = tmp;
! 310: }
! 311:
! 312: if (rmask) {
! 313: GETBITS(sp, sb, rnum, tmp);
! 314: PUTBITS(tmp, 0, rnum, dp);
! 315: }
! 316: }
! 317: }
! 318: }
! 319:
! 320: #endif /* _RASOPS_BITOPS_H_ */