summaryrefslogtreecommitdiff
path: root/hw/xfree86/modes/xf86Cursors.c
blob: 8c5a94ca3a84be1d807f9c586c455a44f15c6be2 (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
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
/*
 * Copyright © 2007 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, 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 the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS 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_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif

#include <stddef.h>
#include <string.h>
#include <stdio.h>

#include "xf86.h"
#include "xf86DDC.h"
#include "xf86Crtc.h"
#include "xf86Modes.h"
#include "xf86RandR12.h"
#include "xf86CursorPriv.h"
#include "X11/extensions/render.h"
#include "X11/extensions/dpmsconst.h"
#include "X11/Xatom.h"
#ifdef RENDER
#include "picturestr.h"
#endif
#include "cursorstr.h"
#include "inputstr.h"

/*
 * Given a screen coordinate, rotate back to a cursor source coordinate
 */
static void
xf86_crtc_rotate_coord (Rotation    rotation,
			int	    width,
			int	    height,
			int	    x_dst,
			int	    y_dst,
			int	    *x_src,
			int	    *y_src)
{
    int t;
    
    switch (rotation & 0xf) {
    case RR_Rotate_0:
	break;
    case RR_Rotate_90:
	t = x_dst;
	x_dst = height - y_dst - 1;
	y_dst = t;
	break;
    case RR_Rotate_180:
	x_dst = width - x_dst - 1;
	y_dst = height - y_dst - 1;
	break;
    case RR_Rotate_270:
	t = x_dst;
	x_dst = y_dst;
	y_dst = width - t - 1;
	break;
    }
    if (rotation & RR_Reflect_X)
	x_dst = width - x_dst - 1;
    if (rotation & RR_Reflect_Y)
	y_dst = height - y_dst - 1;
    *x_src = x_dst;
    *y_src = y_dst;
}

/*
 * Given a cursor source  coordinate, rotate to a screen coordinate
 */
static void
xf86_crtc_rotate_coord_back (Rotation    rotation,
			     int	    width,
			     int	    height,
			     int	    x_dst,
			     int	    y_dst,
			     int	    *x_src,
			     int	    *y_src)
{
    int t;
    
    if (rotation & RR_Reflect_X)
	x_dst = width - x_dst - 1;
    if (rotation & RR_Reflect_Y)
	y_dst = height - y_dst - 1;

    switch (rotation & 0xf) {
    case RR_Rotate_0:
	break;
    case RR_Rotate_90:
	t = x_dst;
	x_dst = y_dst;
	y_dst = width - t - 1;
	break;
    case RR_Rotate_180:
	x_dst = width - x_dst - 1;
	y_dst = height - y_dst - 1;
	break;
    case RR_Rotate_270:
	t = x_dst;
	x_dst = height - y_dst - 1;
	y_dst = t;
	break;
    }
    *x_src = x_dst;
    *y_src = y_dst;
}

/*
 * Convert an x coordinate to a position within the cursor bitmap
 */
static int
cursor_bitpos (int flags, int x, Bool mask)
{
    if (flags & HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK)
	mask = !mask;
    if (flags & HARDWARE_CURSOR_NIBBLE_SWAPPED)
	x = (x & ~3) | (3 - (x & 3));
    if (((flags & HARDWARE_CURSOR_BIT_ORDER_MSBFIRST) == 0) ==
	(X_BYTE_ORDER == X_BIG_ENDIAN))
	x = (x & ~7) | (7 - (x & 7));
    if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1)
	x = (x << 1) + mask;
    else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_8)
	x = ((x & ~7) << 1) | (mask << 3) | (x & 7);
    else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_16)
	x = ((x & ~15) << 1) | (mask << 4) | (x & 15);
    else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32)
	x = ((x & ~31) << 1) | (mask << 5) | (x & 31);
    else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64)
	x = ((x & ~63) << 1) | (mask << 6) | (x & 63);
    return x;
}

/*
 * Fetch one bit from a cursor bitmap
 */
static CARD8
get_bit (CARD8 *image, int stride, int flags, int x, int y, Bool mask)
{
    x = cursor_bitpos (flags, x, mask);
    image += y * stride;
    return (image[(x >> 3)] >> (x & 7)) & 1;
}

/*
 * Set one bit in a cursor bitmap
 */
static void
set_bit (CARD8 *image, int stride, int flags, int x, int y, Bool mask)
{
    x = cursor_bitpos (flags, x, mask);
    image += y * stride;
    image[(x >> 3)] |= 1 << (x & 7);
}
    
/*
 * Load a two color cursor into a driver that supports only ARGB cursors
 */
static void
xf86_crtc_convert_cursor_to_argb (xf86CrtcPtr crtc, unsigned char *src)
{
    ScrnInfoPtr		scrn = crtc->scrn;
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;
    CARD32		*cursor_image = (CARD32 *) xf86_config->cursor_image;
    int			x, y;
    int			xin, yin;
    int			stride = cursor_info->MaxWidth >> 2;
    int			flags = cursor_info->Flags;
    CARD32		bits;

#ifdef ARGB_CURSOR
    crtc->cursor_argb = FALSE;
#endif

    for (y = 0; y < cursor_info->MaxHeight; y++)
	for (x = 0; x < cursor_info->MaxWidth; x++) 
	{
	    xf86_crtc_rotate_coord (crtc->rotation,
				    cursor_info->MaxWidth,
				    cursor_info->MaxHeight,
				    x, y, &xin, &yin);
	    if (get_bit (src, stride, flags, xin, yin, TRUE) ==
		((flags & HARDWARE_CURSOR_INVERT_MASK) == 0))
	    {
		if (get_bit (src, stride, flags, xin, yin, FALSE))
		    bits = xf86_config->cursor_fg;
		else
		    bits = xf86_config->cursor_bg;
	    }
	    else
		bits = 0;
	    cursor_image[y * cursor_info->MaxWidth + x] = bits;
	}
    crtc->funcs->load_cursor_argb (crtc, cursor_image);
}

/*
 * Set the colors for a two-color cursor (ignore for ARGB cursors)
 */
static void
xf86_set_cursor_colors (ScrnInfoPtr scrn, int bg, int fg)
{
    ScreenPtr		screen = scrn->pScreen;
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    CursorPtr		cursor = xf86_config->cursor;
    int			c;
    CARD8		*bits = cursor ?
#if XORG_VERSION_CURRENT < XORG_VERSION_NUMERIC(7,0,0,0,0)
        dixLookupPrivate(&cursor->devPrivates, CursorScreenKey(screen))
#else
        cursor->devPriv[screen->myNum]
#endif
      : NULL;

    /* Save ARGB versions of these colors */
    xf86_config->cursor_fg = (CARD32) fg | 0xff000000;
    xf86_config->cursor_bg = (CARD32) bg | 0xff000000;
    
    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled && !crtc->cursor_argb)
	{
	    if (crtc->funcs->load_cursor_image)
		crtc->funcs->set_cursor_colors (crtc, bg, fg);
	    else if (bits)
		xf86_crtc_convert_cursor_to_argb (crtc, bits);
	}
    }
}

static void
xf86_crtc_hide_cursor (xf86CrtcPtr crtc)
{
    if (crtc->cursor_shown)
    {
	crtc->funcs->hide_cursor (crtc);
	crtc->cursor_shown = FALSE;
    }
}

void
xf86_hide_cursors (ScrnInfoPtr scrn)
{
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    int			c;

    xf86_config->cursor_on = FALSE;
    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled)
	    xf86_crtc_hide_cursor (crtc);
    }
}
    
static void
xf86_crtc_show_cursor (xf86CrtcPtr crtc)
{
    if (!crtc->cursor_shown && crtc->cursor_in_range)
    {
	crtc->funcs->show_cursor (crtc);
	crtc->cursor_shown = TRUE;
    }
}

void
xf86_show_cursors (ScrnInfoPtr scrn)
{
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    int			c;

    xf86_config->cursor_on = TRUE;
    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled)
	    xf86_crtc_show_cursor (crtc);
    }
}
    
static void
xf86_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y)
{
    ScrnInfoPtr		scrn = crtc->scrn;
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;
    DisplayModePtr	mode = &crtc->mode;
    Bool		in_range;
    int			dx, dy;

    /*
     * Transform position of cursor on screen
     */
    if (crtc->transform_in_use)
    {
	ScreenPtr	screen = scrn->pScreen;
	xf86CursorScreenPtr ScreenPriv =
	    (xf86CursorScreenPtr)dixLookupPrivate(&screen->devPrivates,
						  xf86CursorScreenKey);
	struct pict_f_vector   v;

	v.v[0] = x + ScreenPriv->HotX; v.v[1] = y + ScreenPriv->HotY; v.v[2] = 1;
	pixman_f_transform_point (&crtc->f_framebuffer_to_crtc, &v);
	x = floor (v.v[0] + 0.5);
	y = floor (v.v[1] + 0.5);
	/*
	 * Transform position of cursor upper left corner
	 */
	xf86_crtc_rotate_coord_back (crtc->rotation,
				     cursor_info->MaxWidth,
				     cursor_info->MaxHeight,
				     ScreenPriv->HotX, ScreenPriv->HotY, &dx, &dy);
	x -= dx;
	y -= dy;
   }
    else
    {
	x -= crtc->x;
	y -= crtc->y;
    }

    /*
     * Disable the cursor when it is outside the viewport
     */
    in_range = TRUE;
    if (x >= mode->HDisplay || y >= mode->VDisplay ||
	x <= -cursor_info->MaxWidth || y <= -cursor_info->MaxHeight) 
    {
	in_range = FALSE;
	x = 0;
	y = 0;
    }

    crtc->cursor_in_range = in_range;
    
    if (in_range)
    {
	crtc->funcs->set_cursor_position (crtc, x, y);
	xf86_crtc_show_cursor (crtc);
    }
    else
	xf86_crtc_hide_cursor (crtc);
}

static void
xf86_set_cursor_position (ScrnInfoPtr scrn, int x, int y)
{
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    int			c;

    /* undo what xf86HWCurs did to the coordinates */
    x += scrn->frameX0;
    y += scrn->frameY0;
    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled)
	    xf86_crtc_set_cursor_position (crtc, x, y);
    }
}
    
/*
 * Load a two-color cursor into a crtc, performing rotation as needed
 */
static void
xf86_crtc_load_cursor_image (xf86CrtcPtr crtc, CARD8 *src)
{
    ScrnInfoPtr		scrn = crtc->scrn;
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;
    CARD8		*cursor_image;

#ifdef ARGB_CURSOR
    crtc->cursor_argb = FALSE;
#endif

    if (crtc->rotation == RR_Rotate_0)
	cursor_image = src;
    else
    {
        int x, y;
    	int xin, yin;
	int stride = cursor_info->MaxWidth >> 2;
	int flags = cursor_info->Flags;
	
	cursor_image = xf86_config->cursor_image;
	memset(cursor_image, 0, cursor_info->MaxHeight * stride);
	
        for (y = 0; y < cursor_info->MaxHeight; y++)
	    for (x = 0; x < cursor_info->MaxWidth; x++) 
	    {
		xf86_crtc_rotate_coord (crtc->rotation,
					cursor_info->MaxWidth,
					cursor_info->MaxHeight,
					x, y, &xin, &yin);
		if (get_bit(src, stride, flags, xin, yin, FALSE))
		    set_bit(cursor_image, stride, flags, x, y, FALSE);
		if (get_bit(src, stride, flags, xin, yin, TRUE))
		    set_bit(cursor_image, stride, flags, x, y, TRUE);
	    }
    }
    crtc->funcs->load_cursor_image (crtc, cursor_image);
}
    
/*
 * Load a cursor image into all active CRTCs
 */
static void
xf86_load_cursor_image (ScrnInfoPtr scrn, unsigned char *src)
{
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    int			c;

    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled)
	{
	    if (crtc->funcs->load_cursor_image)
		xf86_crtc_load_cursor_image (crtc, src);
	    else if (crtc->funcs->load_cursor_argb)
		xf86_crtc_convert_cursor_to_argb (crtc, src);
	}
    }
}

static Bool
xf86_use_hw_cursor (ScreenPtr screen, CursorPtr cursor)
{
    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;

    if (xf86_config->cursor)
	FreeCursor (xf86_config->cursor, None);
    xf86_config->cursor = cursor;
    ++cursor->refcnt;
    
    if (cursor->bits->width > cursor_info->MaxWidth ||
	cursor->bits->height> cursor_info->MaxHeight)
	return FALSE;

    return TRUE;
}

static Bool
xf86_use_hw_cursor_argb (ScreenPtr screen, CursorPtr cursor)
{
    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;
    
    if (xf86_config->cursor)
	FreeCursor (xf86_config->cursor, None);
    xf86_config->cursor = cursor;
    ++cursor->refcnt;
    
    /* Make sure ARGB support is available */
    if ((cursor_info->Flags & HARDWARE_CURSOR_ARGB) == 0)
	return FALSE;
    
    if (cursor->bits->width > cursor_info->MaxWidth ||
	cursor->bits->height> cursor_info->MaxHeight)
	return FALSE;

    return TRUE;
}

static void
xf86_crtc_load_cursor_argb (xf86CrtcPtr crtc, CursorPtr cursor)
{
    ScrnInfoPtr		scrn = crtc->scrn;
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info = xf86_config->cursor_info;
    CARD32		*cursor_image = (CARD32 *) xf86_config->cursor_image;
    CARD32		*cursor_source = (CARD32 *) cursor->bits->argb;
    int			x, y;
    int			xin, yin;
    CARD32		bits;
    int			source_width = cursor->bits->width;
    int			source_height = cursor->bits->height;
    int			image_width = cursor_info->MaxWidth;
    int			image_height = cursor_info->MaxHeight;
    
    for (y = 0; y < image_height; y++)
	for (x = 0; x < image_width; x++)
	{
	    xf86_crtc_rotate_coord (crtc->rotation, image_width, image_height,
				    x, y, &xin, &yin);
	    if (xin < source_width && yin < source_height)
		bits = cursor_source[yin * source_width + xin];
	    else
		bits = 0;
	    cursor_image[y * image_width + x] = bits;
	}
    
    crtc->funcs->load_cursor_argb (crtc, cursor_image);
}

static void
xf86_load_cursor_argb (ScrnInfoPtr scrn, CursorPtr cursor)
{
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    int			c;

    for (c = 0; c < xf86_config->num_crtc; c++)
    {
	xf86CrtcPtr crtc = xf86_config->crtc[c];

	if (crtc->enabled)
	    xf86_crtc_load_cursor_argb (crtc, cursor);
    }
}

Bool
xf86_cursors_init (ScreenPtr screen, int max_width, int max_height, int flags)
{
    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    xf86CursorInfoPtr	cursor_info;

    cursor_info = xf86CreateCursorInfoRec();
    if (!cursor_info)
	return FALSE;

    xf86_config->cursor_image = xalloc (max_width * max_height * 4);

    if (!xf86_config->cursor_image)
    {
	xf86DestroyCursorInfoRec (cursor_info);
	return FALSE;
    }
	
    xf86_config->cursor_info = cursor_info;

    cursor_info->MaxWidth = max_width;
    cursor_info->MaxHeight = max_height;
    cursor_info->Flags = flags;

    cursor_info->SetCursorColors = xf86_set_cursor_colors;
    cursor_info->SetCursorPosition = xf86_set_cursor_position;
    cursor_info->LoadCursorImage = xf86_load_cursor_image;
    cursor_info->HideCursor = xf86_hide_cursors;
    cursor_info->ShowCursor = xf86_show_cursors;
    cursor_info->UseHWCursor = xf86_use_hw_cursor;
#ifdef ARGB_CURSOR
    if (flags & HARDWARE_CURSOR_ARGB)
    {
	cursor_info->UseHWCursorARGB = xf86_use_hw_cursor_argb;
	cursor_info->LoadCursorARGB = xf86_load_cursor_argb;
    }
#endif
    
    xf86_config->cursor = NULL;
    xf86_hide_cursors (scrn);
    
    return xf86InitCursor (screen, cursor_info);
}

/**
 * Called when anything on the screen is reconfigured.
 *
 * Reloads cursor images as needed, then adjusts cursor positions
 */

void
xf86_reload_cursors (ScreenPtr screen)
{
    ScrnInfoPtr		scrn;
    xf86CrtcConfigPtr   xf86_config;
    xf86CursorInfoPtr   cursor_info;
    CursorPtr		cursor;
    int			x, y;
    xf86CursorScreenPtr cursor_screen_priv;
    
    /* initial mode setting will not have set a screen yet.
       May be called before the devices are initialised.
     */
    if (!screen || !inputInfo.pointer)
	return;
    cursor_screen_priv = dixLookupPrivate(&screen->devPrivates,
					  xf86CursorScreenKey);
    /* return if HW cursor is inactive, to avoid displaying two cursors */
    if (!cursor_screen_priv->isUp)
	return;

    scrn = xf86Screens[screen->myNum];
    xf86_config = XF86_CRTC_CONFIG_PTR(scrn);

    /* make sure the cursor code has been initialized */
    cursor_info = xf86_config->cursor_info;
    if (!cursor_info)
	return;

    cursor = xf86_config->cursor;
    GetSpritePosition (inputInfo.pointer, &x, &y);
    if (!(cursor_info->Flags & HARDWARE_CURSOR_UPDATE_UNHIDDEN))
	(*cursor_info->HideCursor)(scrn);

    if (cursor)
    {
#if XORG_VERSION_CURRENT < XORG_VERSION_NUMERIC(7,0,0,0,0)
	void *src = dixLookupPrivate(&cursor->devPrivates, CursorScreenKey(screen));
#else
	void *src = cursor->devPriv[screen->myNum];
#endif
#ifdef ARGB_CURSOR
	if (cursor->bits->argb && cursor_info->LoadCursorARGB)
	    (*cursor_info->LoadCursorARGB) (scrn, cursor);
	else if (src)
#endif
	    (*cursor_info->LoadCursorImage)(cursor_info->pScrn, src);

	(*cursor_info->SetCursorPosition)(cursor_info->pScrn, x, y);
    }
}

/**
 * Clean up CRTC-based cursor code
 */
void
xf86_cursors_fini (ScreenPtr screen)
{
    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
    
    if (xf86_config->cursor_info)
    {
	xf86DestroyCursorInfoRec (xf86_config->cursor_info);
	xf86_config->cursor_info = NULL;
    }
    if (xf86_config->cursor_image)
    {
	xfree (xf86_config->cursor_image);
	xf86_config->cursor_image = NULL;
    }
    if (xf86_config->cursor)
    {
	FreeCursor (xf86_config->cursor, None);
	xf86_config->cursor = NULL;
    }
}