1 /* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
2 /***********************************************************
4 Copyright (c) 1987 X Consortium
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25 in this Software without prior written authorization from the X Consortium.
28 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
32 Permission to use, copy, modify, and distribute this software and its
33 documentation for any purpose and without fee is hereby granted,
34 provided that the above copyright notice appear in all copies and that
35 both that copyright notice and this permission notice appear in
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41 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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48 ******************************************************************/
49 /* $XConsortium: mfbpntarea.c,v 5.7 94/04/17 20:28:29 dpw Exp $ */
52 #include "windowstr.h"
53 #include "regionstr.h"
54 #include "pixmapstr.h"
55 #include "scrnintstr.h"
61 the solid fillers are called for rectangles and window backgrounds.
62 the boxes are already translated.
63 maybe this should always take a pixmap instead of a drawable?
66 iy = ++iy < tileHeight ? iy : 0
67 is equivalent to iy%= tileheight, and saves a division.
71 MFBSOLIDFILLAREA OPEQ EQWHOLEOWRD
72 mfbSolidWhiteArea |= = ~0
73 mfbSolidBlackArea &=~ = 0
74 mfbSolidInvertArea ^= ^= ~0
76 EQWHOLEWORD is used to write whole longwords. it could use OPEQ,
77 but *p++ |= ~0 on at least two compilers generates much
78 worse code than *p++ = ~0. similarly for *p++ &= ~~0
85 MFBSOLIDFILLAREA(pDraw, nbox, pbox, alu, nop)
92 int nlwidth; /* width in longwords of the drawable */
93 int w; /* width of current box */
94 register int h; /* height of current box */
95 register PixelType *p; /* pointer to bits we're writing */
96 register int nlw; /* loop version of nlwMiddle */
97 register PixelType startmask;
98 register PixelType endmask;/* masks for reggedy bits at either end of line */
99 register int nlwExtra;
100 /* to get from right of box to left of next span */
101 int nlwMiddle; /* number of longwords between sides of boxes */
102 PixelType *pbits; /* pointer to start of drawable */
104 mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits);
108 w = pbox->x2 - pbox->x1;
109 h = pbox->y2 - pbox->y1;
110 p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth);
112 if ( ((pbox->x1 & PIM) + w) < PPW)
114 maskpartialbits(pbox->x1, w, startmask);
116 Duff(h, *p OPEQ startmask; mfbScanlineInc(p, nlwExtra));
120 maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
121 nlwExtra = nlwidth - nlwMiddle;
123 if (startmask && endmask)
131 Duff(nlw, *p++ EQWHOLEWORD);
133 mfbScanlineInc(p, nlwExtra);
136 else if (startmask && !endmask)
144 Duff(nlw, *p++ EQWHOLEWORD);
145 mfbScanlineInc(p, nlwExtra);
148 else if (!startmask && endmask)
153 Duff(nlw, *p++ EQWHOLEWORD);
155 mfbScanlineInc(p, nlwExtra);
158 else /* no ragged bits at either end */
163 Duff(nlw, *p++ EQWHOLEWORD);
164 mfbScanlineInc(p, nlwExtra);
174 /* stipple a list of boxes
176 you can use the reduced rasterop for stipples. if rrop is
177 black, AND the destination with (not stipple pattern). if rrop is
178 white OR the destination with the stipple pattern. if rrop is invert,
179 XOR the destination with the stipple pattern.
181 MFBSTIPPLEFILLAREA OPEQ
182 mfbStippleWhiteArea |=
183 mfbStippleBlackArea &=~
184 mfbStippleInveryArea ^=
189 MFBSTIPPLEFILLAREA(pDraw, nbox, pbox, alu, pstipple)
196 register PixelType *psrc;
197 /* pointer to bits in tile, if needed */
198 int tileHeight; /* height of the tile */
199 register PixelType srcpix;
201 int nlwidth; /* width in longwords of the drawable */
202 int w; /* width of current box */
203 register int nlw; /* loop version of nlwMiddle */
204 register PixelType *p; /* pointer to bits we're writing */
205 register int h; /* height of current box */
207 PixelType endmask; /* masks for reggedy bits at either end of line */
208 int nlwMiddle; /* number of longwords between sides of boxes */
209 int nlwExtra; /* to get from right of box to left of next span */
210 register int iy; /* index of current scanline in tile */
211 PixelType *pbits; /* pointer to start of drawable */
213 mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits);
215 tileHeight = pstipple->drawable.height;
216 psrc = (PixelType *)(pstipple->devPrivate.ptr);
220 w = pbox->x2 - pbox->x1;
221 h = pbox->y2 - pbox->y1;
222 iy = pbox->y1 % tileHeight;
223 p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth);
225 if ( ((pbox->x1 & PIM) + w) < PPW)
227 maskpartialbits(pbox->x1, w, startmask);
232 iy = ++iy < tileHeight ? iy : 0;
233 *p OPEQ (srcpix & startmask);
234 mfbScanlineInc(p, nlwExtra);
239 maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
240 nlwExtra = nlwidth - nlwMiddle;
242 if (startmask && endmask)
248 iy = ++iy < tileHeight ? iy : 0;
250 *p OPEQ (srcpix & startmask);
252 Duff (nlw, *p++ OPEQ srcpix);
253 *p OPEQ (srcpix & endmask);
254 mfbScanlineInc(p, nlwExtra);
257 else if (startmask && !endmask)
263 iy = ++iy < tileHeight ? iy : 0;
265 *p OPEQ (srcpix & startmask);
267 Duff(nlw, *p++ OPEQ srcpix);
268 mfbScanlineInc(p, nlwExtra);
271 else if (!startmask && endmask)
276 iy = ++iy < tileHeight ? iy : 0;
278 Duff(nlw, *p++ OPEQ srcpix);
279 *p OPEQ (srcpix & endmask);
280 mfbScanlineInc(p, nlwExtra);
283 else /* no ragged bits at either end */
288 iy = ++iy < tileHeight ? iy : 0;
290 Duff(nlw, *p++ OPEQ srcpix);
291 mfbScanlineInc(p, nlwExtra);