+++ /dev/null
-/***********************************************************
-
-Copyright (c) 1987 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from the X Consortium.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-/* $XConsortium: cfbbres.c,v 1.15 94/04/17 20:28:45 dpw Exp $ */
-/* $XFree86: xc/programs/Xserver/cfb/cfbbres.c,v 3.1 1996/08/25 14:05:40 dawes Exp $ */
-#include "X.h"
-#include "misc.h"
-#include "cfb.h"
-#include "cfbmskbits.h"
-#include "servermd.h"
-#include "miline.h"
-
-/* Solid bresenham line */
-/* NOTES
- e2 is used less often than e1, so it's not in a register
-*/
-
-void
-cfbBresS(rop, and, xor, addrl, nlwidth, signdx, signdy, axis, x1, y1, e, e1,
- e2, len)
- int rop;
- unsigned long and, xor;
- unsigned long *addrl; /* pointer to base of bitmap */
- int nlwidth; /* width in longwords of bitmap */
- register int signdx;
- int signdy; /* signs of directions */
- int axis; /* major axis (Y_AXIS or X_AXIS) */
- int x1, y1; /* initial point */
- register int e; /* error accumulator */
- register int e1; /* bresenham increments */
- int e2;
- int len; /* length of line */
-{
- register int e3 = e2-e1;
-#if PSZ == 24
- unsigned long piQxelXor[3],piQxelAnd[3];
- char *addrb;
- int nlwidth3, signdx3;
-#endif
-#ifdef PIXEL_ADDR
- register PixelType *addrp; /* Pixel pointer */
-
- if (len == 0)
- return;
- /* point to first point */
- nlwidth <<= PWSH;
-#if PSZ == 24
- addrp = (PixelType *)(addrl) + (y1 * nlwidth);
- addrb = (char *)addrp + x1 * 3;
-
- piQxelXor[0] = (xor << 24) | xor;
- piQxelXor[1] = (xor << 16)| (xor >> 8);
- piQxelXor[2] = (xor << 8) | (xor >> 16);
- piQxelAnd[0] = (and << 24) | and;
- piQxelAnd[1] = (and << 16)| (and >> 8);
- piQxelAnd[2] = (and << 8) | (and >> 16);
-#else
- addrp = (PixelType *)(addrl) + (y1 * nlwidth) + x1;
-#endif
- if (signdy < 0)
- nlwidth = -nlwidth;
- e = e-e1; /* to make looping easier */
-#if PSZ == 24
- nlwidth3 = nlwidth * sizeof (long);
- signdx3 = signdx * 3;
-#endif
-
- if (axis == Y_AXIS)
- {
- int t;
-
- t = nlwidth;
- nlwidth = signdx;
- signdx = t;
-#if PSZ == 24
- t = nlwidth3;
- nlwidth3 = signdx3;
- signdx3 = t;
-#endif
- }
- if (rop == GXcopy)
- {
- --len;
-#if PSZ == 24
-#define body_copy \
- addrp = (PixelType *)((unsigned long)addrb & ~0x03); \
- switch((unsigned long)addrb & 3){ \
- case 0: \
- *addrp = ((*addrp)&0xFF000000)|(piQxelXor[0] & 0xFFFFFF); \
- break; \
- case 1: \
- *addrp = ((*addrp)&0xFF)|(piQxelXor[2] & 0xFFFFFF00); \
- break; \
- case 3: \
- *addrp = ((*addrp)&0xFFFFFF)|(piQxelXor[0] & 0xFF000000); \
- *(addrp+1) = ((*(addrp+1))&0xFFFF0000)|(piQxelXor[1] & 0xFFFF); \
- break; \
- case 2: \
- *addrp = ((*addrp)&0xFFFF)|(piQxelXor[1] & 0xFFFF0000); \
- *(addrp+1) = ((*(addrp+1))&0xFFFFFF00)|(piQxelXor[2] & 0xFF); \
- break; \
- }
-#define body {\
- body_copy \
- addrb += signdx3; \
- e += e1; \
- if (e >= 0) \
- { \
- addrb += nlwidth3; \
- e += e3; \
- } \
- }
-#else /* PSZ == 24 */
-#define body {\
- *addrp = xor; \
- addrp += signdx; \
- e += e1; \
- if (e >= 0) \
- { \
- addrp += nlwidth; \
- e += e3; \
- } \
- }
-#endif /* PSZ == 24 */
- while (len >= 4)
- {
- body body body body
- len -= 4;
- }
- switch (len)
- {
- case 3: body case 2: body case 1: body
- }
-#undef body
-#if PSZ == 24
- body_copy
-# undef body_copy
-#else
- *addrp = xor;
-#endif
- }
- else /* not GXcopy */
- {
- while(len--)
- {
-#if PSZ == 24
- addrp = (PixelType *)((unsigned long)addrb & ~0x03);
- switch((unsigned long)addrb & 3){
- case 0:
- *addrp = (*addrp & (piQxelAnd[0]|0xFF000000))
- ^ (piQxelXor[0] & 0xFFFFFF);
- break;
- case 1:
- *addrp = (*addrp & (piQxelAnd[2]|0xFF))
- ^ (piQxelXor[2] & 0xFFFFFF00);
- break;
- case 3:
- *addrp = (*addrp & (piQxelAnd[0]|0xFFFFFF))
- ^ (piQxelXor[0] & 0xFF000000);
- *(addrp+1) = (*(addrp+1) & (piQxelAnd[1]|0xFFFF0000))
- ^ (piQxelXor[1] & 0xFFFF);
- break;
- case 2:
- *addrp = (*addrp & (piQxelAnd[1]|0xFFFF))
- ^ (piQxelXor[1] & 0xFFFF0000);
- *(addrp+1) = (*(addrp+1) & (piQxelAnd[2]|0xFFFFFF00))
- ^ (piQxelXor[2] & 0xFF);
- break;
- }
- e += e1;
- if (e >= 0)
- {
- addrb += nlwidth3;
- e += e3;
- }
- addrb += signdx3;
-#else /* PSZ == 24 */
- *addrp = DoRRop (*addrp, and, xor);
- e += e1;
- if (e >= 0)
- {
- addrp += nlwidth;
- e += e3;
- }
- addrp += signdx;
-#endif /* PSZ == 24 */
- }
- }
-#else /* !PIXEL_ADDR */
- register unsigned long tmp, bit;
- unsigned long leftbit, rightbit;
-
- /* point to longword containing first point */
-#if PSZ == 24
- addrl = (addrl + (y1 * nlwidth) + ((x1 * 3) >>2);
-#else
- addrl = (addrl + (y1 * nlwidth) + (x1 >> PWSH));
-#endif
- if (signdy < 0)
- nlwidth = -nlwidth;
- e = e-e1; /* to make looping easier */
-
- leftbit = cfbmask[0];
-#if PSZ == 24
- rightbit = cfbmask[(PPW-1)<<1];
- bit = cfbmask[(x1 & 3)<<1];
-#else
- rightbit = cfbmask[PPW-1];
- bit = cfbmask[x1 & PIM];
-#endif
-
- if (axis == X_AXIS)
- {
- if (signdx > 0)
- {
- while (len--)
- {
- *addrl = DoMaskRRop (*addrl, and, xor, bit);
- bit = SCRRIGHT(bit,1);
- e += e1;
- if (e >= 0)
- {
- addrl += nlwidth;
- e += e3;
- }
- if (!bit)
- {
- bit = leftbit;
- addrl++;
- }
- }
- }
- else
- {
- while (len--)
- {
- *addrl = DoMaskRRop (*addrl, and, xor, bit);
- e += e1;
- bit = SCRLEFT(bit,1);
- if (e >= 0)
- {
- addrl += nlwidth;
- e += e3;
- }
- if (!bit)
- {
- bit = rightbit;
- addrl--;
- }
- }
- }
- } /* if X_AXIS */
- else
- {
- if (signdx > 0)
- {
- while(len--)
- {
- *addrl = DoMaskRRop (*addrl, and, xor, bit);
- e += e1;
- if (e >= 0)
- {
- bit = SCRRIGHT(bit,1);
- if (!bit)
- {
- bit = leftbit;
- addrl++;
- }
- e += e3;
- }
- addrl += nlwidth;
- }
- }
- else
- {
- while(len--)
- {
- *addrl = DoMaskRRop (*addrl, and, xor, bit);
- e += e1;
- if (e >= 0)
- {
- bit = SCRLEFT(bit,1);
- if (!bit)
- {
- bit = rightbit;
- addrl--;
- }
- e += e3;
- }
- addrl += nlwidth;
- }
- }
- } /* else Y_AXIS */
-#endif
-}
projects / rdpsrv / blobdiff