diff options
Diffstat (limited to 'hw/xfree86/xf4bpp/mfbhrzvert.c')
| -rw-r--r-- | hw/xfree86/xf4bpp/mfbhrzvert.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/hw/xfree86/xf4bpp/mfbhrzvert.c b/hw/xfree86/xf4bpp/mfbhrzvert.c new file mode 100644 index 000000000..3d6c3df52 --- /dev/null +++ b/hw/xfree86/xf4bpp/mfbhrzvert.c @@ -0,0 +1,133 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/mfbhrzvert.c,v 1.3 1999/06/06 08:48:55 dawes Exp $ */ +/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */ +/*********************************************************** + +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. + +******************************************************************/ +/* GJA -- modified this file for vga16 */ +/* $XConsortium: mfbhrzvert.c /main/3 1996/02/21 17:56:41 kaleb $ */ + +#include "xf4bpp.h" +#include "OScompiler.h" +#include "mfbmap.h" +#include "mfb.h" +#include "maskbits.h" +#include "wm3.h" + +/* horizontal solid line + abs(len) > 1 +*/ + +void +xf4bppHorzS(addrl, nlwidth, x1, y1, len) +register PixelType *addrl; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int x1; /* initial point */ +int y1; +int len; /* length of line */ +{ + register PixelType startmask; + register PixelType endmask; + register int nlmiddle; + + + /* force the line to go left to right + but don't draw the last point + */ + if (len < 0) + { + x1 += len; + x1 += 1; + len = -len; + } + + addrl = mfbScanline(addrl, x1, y1, nlwidth); + + /* all bits inside same longword */ + if ( ((x1 & PIM) + len) < PPW) + { + maskpartialbits(x1, len, startmask); + UPDRW(addrl,startmask); + } + else + { + maskbits(x1, len, startmask, endmask, nlmiddle); + if (startmask) { + UPDRW(addrl,startmask); addrl++; + } + Duff (nlmiddle, UPDRW(addrl,~0); addrl++); + if (endmask) { + UPDRW(addrl,endmask); + } + } +} + +/* vertical solid line + this uses do loops because pcc (Ultrix 1.2, bsd 4.2) generates + better code. sigh. we know that len will never be 0 or 1, so + it's OK to use it. +*/ + +void +xf4bppVertS(addrl, nlwidth, x1, y1, len) +register PixelType *addrl; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int x1, y1; /* initial point */ +register int len; /* length of line */ +{ + register PixelType bitmask; + + addrl = mfbScanline(addrl, x1, y1, nlwidth); + + if (len < 0) + { + nlwidth = -nlwidth; + len = -len; + } + + bitmask = mask[x1 & PIM]; + Duff(len, UPDRW(addrl,bitmask); addrl += nlwidth); +} |