summaryrefslogtreecommitdiff
path: root/afb/afbtegblt.c
blob: c89b23a5d9ad9dfd1d34a76e32ad2b4be7c16cf8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
/* 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.

******************************************************************/

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/Xmd.h>
#include <X11/Xproto.h>
#include "afb.h"
#include <X11/fonts/fontstruct.h>
#include "dixfontstr.h"
#include "gcstruct.h"
#include "windowstr.h"
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "regionstr.h"
#include "maskbits.h"

/*
	this works for fonts with glyphs <= PPW bits wide.

	This should be called only with a terminal-emulator font;
this means that the FIXED_METRICS flag is set, and that
glyphbounds == charbounds.

	in theory, this goes faster; even if it doesn't, it reduces the
flicker caused by writing a string over itself with image text (since
the background gets repainted per character instead of per string.)
this seems to be important for some converted X10 applications.

	Image text looks at the bits in the glyph and the fg and bg in the
GC.  it paints a rectangle, as defined in the protocol dcoument,
and the paints the characters.

*/

#if defined(NO_3_60_CG4) && defined(FASTPUTBITS) && defined(FASTGETBITS)
#define FASTCHARS
#endif

/*
 * this macro "knows" that only characters <= 8 bits wide will
 * fit this case (which is why it is independent of GLYPHPADBYTES)
 */

#if (BITMAP_BIT_ORDER == MSBFirst) && (GLYPHPADBYTES != 4)
#if GLYPHPADBYTES == 1
#define ShiftAmnt   24
#else
#define ShiftAmnt   16
#endif

/*
 * Note: for BITMAP_BIT_ORDER != IMAGE_BYTE_ORDER, SCRRIGHT() evaluates its
 * first argument more than once.  Thus the imbedded char++ have to be moved.
 * (DHD)
 */
#if BITMAP_BIT_ORDER == IMAGE_BYTE_ORDER
#if PPW == 32
#define GetBits4	c = (*char1++ << ShiftAmnt) | \
						SCRRIGHT (*char2++ << ShiftAmnt, xoff2) | \
						SCRRIGHT (*char3++ << ShiftAmnt, xoff3) | \
						SCRRIGHT (*char4++ << ShiftAmnt, xoff4);
#else /* PPW */
#define GetBits4	c = ((unsigned long)(*char1++ << ShiftAmnt) << 32 )  | \
						(SCRRIGHT (*char2++ << ShiftAmnt, xoff2) << 32 ) | \
						(SCRRIGHT (*char3++ << ShiftAmnt, xoff3) << 32 ) | \
						(SCRRIGHT (*char4++ << ShiftAmnt, xoff4) << 32 ) | \
						(*char5++ << ShiftAmnt) 						 | \
						SCRRIGHT (*char6++ << ShiftAmnt, xoff6) 		 | \
						SCRRIGHT (*char7++ << ShiftAmnt, xoff7) 		 | \
						SCRRIGHT (*char8++ << ShiftAmnt, xoff8);
#endif /* PPW */
#else /* BITMAP_BIT_ORDER != IMAGE_BYTE_ORDER */
#if PPW == 32
#define GetBits4	c = (*char1++ << ShiftAmnt) | \
						SCRRIGHT (*char2 << ShiftAmnt, xoff2) | \
						SCRRIGHT (*char3 << ShiftAmnt, xoff3) | \
						SCRRIGHT (*char4 << ShiftAmnt, xoff4); \
						char2++; char3++; char4++;
#else /* PPW == 64 */
#define GetBits4	c = ((unsigned long)(*char1++ << ShiftAmnt) << 32 )  | \
						(SCRRIGHT (*char2 << ShiftAmnt, xoff2) << 32 ) | \
						(SCRRIGHT (*char3 << ShiftAmnt, xoff3) << 32 ) | \
						(SCRRIGHT (*char4 << ShiftAmnt, xoff4) << 32 ) | \
						(*char5++ << ShiftAmnt) 						 | \
						SCRRIGHT (*char6 << ShiftAmnt, xoff6) 		 | \
						SCRRIGHT (*char7 << ShiftAmnt, xoff7) 		 | \
						SCRRIGHT (*char8 << ShiftAmnt, xoff8); \
						char2++; char3++; char4++; char6++; char7++; char8++;
#endif /* PPW */
#endif /* BITMAP_BIT_ORDER == IMAGE_BYTE_ORDER */

#else /* (BITMAP_BIT_ORDER != MSBFirst) || (GLYPHPADBYTES == 4) */

#if BITMAP_BIT_ORDER == IMAGE_BYTE_ORDER
#if PPW == 32
#define GetBits4	c = *char1++ | \
						SCRRIGHT (*char2++, xoff2) | \
						SCRRIGHT (*char3++, xoff3) | \
						SCRRIGHT (*char4++, xoff4);
#else /* PPW == 64 */
#define GetBits4	c = (unsigned long)(((*char1++) << 64 ) | \
						(SCRRIGHT (*char2++, xoff2) << 64 ) | \
						(SCRRIGHT (*char3++, xoff3) << 64 ) | \
						(SCRRIGHT (*char4++, xoff4) << 64 ) | \
						SCRRIGHT (*char5++, xoff5)		  | \
						SCRRIGHT (*char6++, xoff6)		  | \
						SCRRIGHT (*char7++, xoff7)		  | \
						SCRRIGHT (*char8++, xoff8));
#endif /* PPW */
#else /* BITMAP_BIT_ORDER != IMAGE_BYTE_ORDER */
#if PPW == 32
#define GetBits4	c = *char1++ | \
						SCRRIGHT (*char2, xoff2) | \
						SCRRIGHT (*char3, xoff3) | \
						SCRRIGHT (*char4, xoff4); \
						char2++; char3++; char4++;
#else /* PPW == 64 */
#define GetBits4	c = (unsigned long)(((*char1++) << 64 ) | \
						(SCRRIGHT (*char2, xoff2) << 64 ) | \
						(SCRRIGHT (*char3, xoff3) << 64 ) | \
						(SCRRIGHT (*char4, xoff4) << 64 ) | \
						SCRRIGHT (*char5, xoff5)		  | \
						SCRRIGHT (*char6, xoff6)		  | \
						SCRRIGHT (*char7, xoff7)		  | \
						SCRRIGHT (*char8, xoff8)); \
						char2++; char3++; char4++; \
						char5++; char6++; char7++; char8++;
#endif /* PPW */
#endif /* BITMAP_BIT_ORDER == IMAGE_BYTE_ORDER */

#endif /* BITMAP_BIT_ORDER && GLYPHPADBYTES */


#if GLYPHPADBYTES == 1
typedef		unsigned char		*glyphPointer;
#define USE_LEFTBITS
#endif

#if GLYPHPADBYTES == 2
typedef unsigned short		*glyphPointer;
#define USE_LEFTBITS
#endif

#if GLYPHPADBYTES == 4
typedef unsigned int		*glyphPointer;
#endif

#ifdef USE_LEFTBITS
#define GetBits1	getleftbits (char1, widthGlyph, c); \
					c &= glyphMask; \
					char1 = (glyphPointer) (((char *) char1) + glyphBytes);
#else
#define GetBits1	c = *char1++;
#endif

void
afbTEGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
	DrawablePtr pDrawable;
	GC 				*pGC;
	int 		x, y;
	unsigned int nglyph;
	CharInfoPtr *ppci;				/* array of character info */
	pointer		pglyphBase;			/* start of array of glyphs */
{
	FontPtr		pfont = pGC->font;
	int widthDst;
	PixelType *pdstBase;				/* pointer to longword with top row
								 				of current glyph */

	int h;								/* height of glyph and char */
	register int xpos;				/* current x  */
	int ypos;							/* current y */
	int widthGlyph;

	int hTmp;							/* counter for height */
	register PixelType startmask, endmask;
	int nfirst;							/* used if glyphs spans a longword boundary */
	BoxRec bbox;						/* for clipping */
	int		widthGlyphs;
	int sizeDst;
	int depthDst;
	PixelType *saveDst;
	register PixelType  *dst;
	register PixelType  c;
	register int d;
	register int xoff1, xoff2, xoff3, xoff4;
	register glyphPointer char1, char2, char3, char4;
	glyphPointer schar1, schar2, schar3, schar4;
#if PPW == 64
	register int xoff5, xoff6, xoff7, xoff8;
	register glyphPointer char5, char6, char7, char8;
	glyphPointer schar5, schar6, schar7, schar8;
#endif /* PPW */

	unsigned char *rrops;
#ifdef USE_LEFTBITS
	register PixelType glyphMask;
	register PixelType tmpSrc;
	register int glyphBytes;
#endif

	afbGetPixelWidthSizeDepthAndPointer(pDrawable, widthDst, sizeDst, depthDst,
													 pdstBase);

	xpos = x + pDrawable->x;
	ypos = y + pDrawable->y;

	widthGlyph = FONTMAXBOUNDS(pfont,characterWidth);
	h = FONTASCENT(pfont) + FONTDESCENT(pfont);

	xpos += FONTMAXBOUNDS(pfont,leftSideBearing);
	ypos -= FONTASCENT(pfont);

	rrops = ((afbPrivGCPtr)dixLookupPrivate(&pGC->devPrivates,
						afbGCPrivateKey))->rropOS;
	bbox.x1 = xpos;
	bbox.x2 = xpos + (widthGlyph * nglyph);
	bbox.y1 = ypos;
	bbox.y2 = ypos + h;

	switch (RECT_IN_REGION(pGC->pScreen, pGC->pCompositeClip, &bbox)) {
		case rgnPART:
		/* this is the WRONG thing to do, but it works.
		   calling the non-terminal text is easy, but slow, given
		   what we know about the font.

		   the right thing to do is something like:
			for each clip rectangle
				compute at which row the glyph starts to be in it,
				   and at which row the glyph ceases to be in it
				compute which is the first glyph inside the left
					edge, and the last one inside the right edge
				draw a fractional first glyph, using only
					the rows we know are in
				draw all the whole glyphs, using the appropriate rows
				draw any pieces of the last glyph, using the right rows

		   this way, the code would take advantage of knowing that
		   all glyphs are the same height and don't overlap.

		   one day...
		*/
			afbImageGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
		case rgnOUT:
			return;
	}
	pdstBase = afbScanlineDeltaNoBankSwitch(pdstBase, ypos, widthDst);
	widthGlyphs = widthGlyph * PGSZB;

#ifdef USE_LEFTBITS
	glyphMask = mfbGetendtab(widthGlyph);
	glyphBytes = GLYPHWIDTHBYTESPADDED(*ppci);
#endif

	if (nglyph >= PGSZB && widthGlyphs <= PPW) {
		while (nglyph >= PGSZB) {
			nglyph -= PGSZB;
			xoff1 = xpos & PIM;
			xoff2 = widthGlyph;
			xoff3 = xoff2 + widthGlyph;
			xoff4 = xoff3 + widthGlyph;
#if PPW == 64
			xoff5 = xoff4 + widthGlyph;
			xoff6 = xoff5 + widthGlyph;
			xoff7 = xoff6 + widthGlyph;
			xoff8 = xoff7 + widthGlyph;
#endif /* PPW */
			schar1 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar2 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar3 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar4 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
#if PPW == 64
			schar5 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar6 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar7 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
			schar8 = (glyphPointer)FONTGLYPHBITS(pglyphBase,(*ppci++));
#endif /* PPW */

			hTmp = h;
			saveDst = afbScanlineOffset(pdstBase, (xpos >> PWSH)); /* switch now */

#ifndef FASTCHARS
			if (xoff1 + widthGlyphs <= PPW) {
				maskpartialbits (xoff1, widthGlyphs, startmask);
#endif
				for (d = 0; d < depthDst; d++) {
					hTmp = h;
					dst = saveDst;
					saveDst += sizeDst;	/* @@@ NEXT PLANE @@@ */

					switch (rrops[d]) {
						case RROP_BLACK:
							while (hTmp--) {
#ifdef FASTCHARS
								FASTPUTBITS(0, xoff1, widthGlyphs, dst);
#else
								*(dst) &= ~startmask;
#endif
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_WHITE:
							while (hTmp--) {
#ifdef FASTCHARS
								FASTPUTBITS(~0, xoff1, widthGlyphs, dst);
#else
								*(dst) |= startmask;
#endif
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_INVERT:
							char1 = schar1;
							char2 = schar2;
							char3 = schar3;
							char4 = schar4;
							/* XXX */
							while (hTmp--) {
								GetBits4
#ifdef FASTCHARS
# if BITMAP_BIT_ORDER == MSBFirst
								c >>= PPW - widthGlyphs;
# endif
								FASTPUTBITS(~c, xoff1, widthGlyphs, dst);
#else
								*(dst) = ((*dst) & ~startmask) | (~SCRRIGHT(c, xoff1) & startmask);
#endif
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_COPY:
							char1 = schar1;
							char2 = schar2;
							char3 = schar3;
							char4 = schar4;

							while (hTmp--) {
								GetBits4
#ifdef FASTCHARS
# if BITMAP_BIT_ORDER == MSBFirst
								c >>= PPW - widthGlyphs;
#endif
								FASTPUTBITS(c, xoff1, widthGlyphs, dst);
#else
								*(dst) = ((*dst) & ~startmask) | (SCRRIGHT(c, xoff1) & startmask);
#endif
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_NOP:
							break;
					} /* switch (rrops[d]) */
				} /* for (d = ... ) */
#ifndef FASTCHARS
			} else {
				maskPPWbits (xoff1, widthGlyphs, startmask, endmask);
				nfirst = PPW - xoff1;
				for (d = 0; d < depthDst; d++) {
					hTmp = h;
					dst = saveDst;
					saveDst += sizeDst;	/* @@@ NEXT PLANE @@@ */

					switch (rrops[d]) {
						case RROP_BLACK:
							while (hTmp--) {
								dst[0] &= ~startmask;
								dst[1] &= ~endmask;
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_WHITE:
							while (hTmp--) {
								dst[0] |= startmask;
								dst[1] |= endmask;
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_INVERT:
							char1 = schar1;
							char2 = schar2;
							char3 = schar3;
							char4 = schar4;

							while (hTmp--) {
								GetBits4
								dst[0] = (dst[0] & ~startmask) | (~SCRRIGHT(c,xoff1) & startmask);
								dst[1] = (dst[1] & ~endmask) | (~SCRLEFT(c,nfirst) & endmask);
								afbScanlineInc(dst, widthDst);
							}
							break;
						case RROP_COPY:
							char1 = schar1;
							char2 = schar2;
							char3 = schar3;
							char4 = schar4;

							while (hTmp--) {
								GetBits4
								dst[0] = (dst[0] & ~startmask) | (SCRRIGHT(c,xoff1) & startmask);
								dst[1] = (dst[1] & ~endmask) | (SCRLEFT(c,nfirst) & endmask);
								afbScanlineInc(dst, widthDst);
							}
							break;

						case RROP_NOP:
							break;
					} /* switch */
				} /* for (d = ... ) */
			}
#endif
			xpos += widthGlyphs;
		}
	}

	while(nglyph--) {
		xoff1 = xpos & PIM;
		schar1 = (glyphPointer) FONTGLYPHBITS(pglyphBase,(*ppci++));
		hTmp = h;
		saveDst = afbScanlineOffset(pdstBase, (xpos >> PWSH));

		if (xoff1 + widthGlyph <= PPW) {
			maskpartialbits (xoff1, widthGlyph, startmask);

			for (d = 0; d < depthDst; d++) {
				hTmp = h;
				dst = saveDst;
				saveDst += sizeDst;	/* @@@ NEXT PLANE @@@ */
				char1 = schar1;

				switch (rrops[d]) {
					case RROP_BLACK:
						while (hTmp--) {
							(*dst) &= ~startmask;
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_WHITE:
						while (hTmp--) {
							(*dst) |= startmask;
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_INVERT:
						while (hTmp--) {
#ifdef FASTCHARS
#ifdef USE_LEFTBITS
							FASTGETBITS (char1,0,widthGlyph,c);
							char1 = (glyphPointer) (((char *) char1) + glyphBytes);
#else
							c = *char1++;
#if BITMAP_BIT_ORDER == MSBFirst
							c >>= PPW - widthGlyph;
#endif
#endif
							FASTPUTBITS (~c,xoff1,widthGlyph,dst);
#else
							GetBits1
							(*dst) = ((*dst) & ~startmask) | (~SCRRIGHT(c, xoff1) & startmask);
#endif
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_COPY:
						while (hTmp--) {
#ifdef FASTCHARS
#ifdef USE_LEFTBITS
							FASTGETBITS (char1,0,widthGlyph,c);
							char1 = (glyphPointer) (((char *) char1) + glyphBytes);
#else
							c = *char1++;
#if BITMAP_BIT_ORDER == MSBFirst
							c >>= PPW - widthGlyph;
#endif
#endif
							FASTPUTBITS (c,xoff1,widthGlyph,dst);
#else
							GetBits1
							(*dst) = ((*dst) & ~startmask) | (SCRRIGHT(c, xoff1) & startmask);
#endif
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_NOP:
						break;
				} /* switch */
			} /* for (d = ...) */
		} else {
			maskPPWbits (xoff1, widthGlyph, startmask, endmask);
			nfirst = PPW - xoff1;

			for (d = 0; d < depthDst; d++) {
				hTmp = h;
				dst = saveDst;
				saveDst += sizeDst;	/* @@@ NEXT PLANE @@@ */
				char1 = schar1;

				switch (rrops[d]) {
					case RROP_BLACK:
						while (hTmp--) {
							dst[0] &= ~startmask;
							dst[1] &= ~endmask;
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_WHITE:
						while (hTmp--) {
							dst[0] |= startmask;
							dst[1] |= endmask;
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_INVERT:
						while (hTmp--) {
							GetBits1
							dst[0] = (dst[0] & ~startmask) | (~SCRRIGHT(c,xoff1) & startmask);
							dst[1] = (dst[1] & ~endmask) | (~SCRLEFT(c,nfirst) & endmask);
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_COPY:
						while (hTmp--) {
							GetBits1
							dst[0] = (dst[0] & ~startmask) | (SCRRIGHT(c,xoff1) & startmask);
							dst[1] = (dst[1] & ~endmask) | (SCRLEFT(c,nfirst) & endmask);
							afbScanlineInc(dst, widthDst);
						}
						break;
					case RROP_NOP:
						break;
				} /* switch */
			} /* for (d = ...) */
		}

		xpos += widthGlyph;
	}
}