summaryrefslogtreecommitdiff
path: root/progs/xdemos/glxdpyinfo.c
blob: 70c806918f43a99f0deedec937b6cfbdde8b218e (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
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
/*
 * $TOG: xdpyinfo.c /main/35 1998/02/09 13:57:05 kaleb $
 * 
 * xdpyinfo - print information about X display connecton
 *
 * 
Copyright 1988, 1998  The Open Group

All Rights Reserved.

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
OPEN GROUP 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 Open Group 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 Open Group.
 *
 * Author:  Jim Fulton, MIT X Consortium
 * GLX and Overlay support added by Jamie Zawinski <jwz@jwz.org>, 11-Nov-99
 *
 *      To compile:
 *         cc -DHAVE_GLX glxdpyinfo.c -o glxdpyinfo -lGL -lX11 -lXext -lm
 *
 *      Other defines to consider:
 *         -DHAVE_XIE -DHAVE_XTEST -DHAVE_XRECORD
 */

#define HAVE_GLX  /* added by Brian Paul */

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xproto.h> /* for CARD32 */
#include <X11/extensions/multibuf.h>
#ifdef HAVE_XIE
#include <X11/extensions/XIElib.h>
#endif /* HAVE_XIE */
#ifdef HAVE_XTEST
#include <X11/extensions/XTest.h>
#endif /* HAVE_XTEST */
#include <X11/extensions/sync.h>
#include <X11/extensions/Xdbe.h>
#ifdef HAVE_XRECORD
#include <X11/extensions/record.h>
#endif /* HAVE_XRECORD */
#ifdef MITSHM
#include <X11/extensions/XShm.h>
#endif
#include <X11/Xos.h>
#include <stdio.h>
#include <stdlib.h>

#ifdef HAVE_GLX
# include <GL/gl.h>
# include <GL/glx.h>
#endif /* HAVE_GLX */

#define HAVE_OVERLAY /* jwz: no compile-time deps, so do this all the time */

char *ProgramName;
Bool queryExtensions = False;

static int StrCmp(a, b)
    char **a, **b;
{
    return strcmp(*a, *b);
}


static int print_event_mask (char *buf, int lastcol, int indent, long mask);



#ifdef HAVE_GLX  /* Added by jwz, 11-Nov-99 */

static void
print_glx_versions (dpy)
    Display *dpy;
{
  /* Note: with Mesa 3.0, this lies: it prints the info from the
     client's GL library, rather than the info from the GLX server.

     Note also that we can't protect these calls by only doing
     them when the GLX extension is present, because with Mesa,
     the server doesn't have that extension (but the GL library
     works anyway.)
   */
      int scr = DefaultScreen (dpy);
      const char *vend, *vers;
      vend = glXQueryServerString (dpy, scr, GLX_VENDOR);
      if (!vend) return;
      vers = glXQueryServerString (dpy, scr, GLX_VERSION);
      printf ("GLX vendor:    %s (%s)\n",
              vend, (vers ? vers : "unknown version"));
}

static void
print_glx_visual_info (dpy, vip)
    Display *dpy;
    XVisualInfo *vip;
{
  int status, value = False;

  status = glXGetConfig (dpy, vip, GLX_USE_GL, &value);
  if (status == GLX_NO_EXTENSION)
    /* dpy does not support the GLX extension. */
    return;

  if (status == GLX_BAD_VISUAL || value == False)
    {
      printf ("    GLX supported:     no\n");
      return;
    }
  else
    {
      printf ("    GLX supported:     yes\n");
    }
    
  if (!glXGetConfig (dpy, vip, GLX_LEVEL, &value) &&
      value != 0)
    printf ("    GLX level:         %d\n", value);

  if (!glXGetConfig (dpy, vip, GLX_RGBA, &value) && value)
    {
      int r=0, g=0, b=0, a=0;
      glXGetConfig (dpy, vip, GLX_RED_SIZE,   &r);
      glXGetConfig (dpy, vip, GLX_GREEN_SIZE, &g);
      glXGetConfig (dpy, vip, GLX_BLUE_SIZE,  &b);
      glXGetConfig (dpy, vip, GLX_ALPHA_SIZE, &a);
      printf ("    GLX type:          RGBA (%2d, %2d, %2d, %2d)\n",
              r, g, b, a);

      r=0, g=0, b=0, a=0;
      glXGetConfig (dpy, vip, GLX_ACCUM_RED_SIZE,   &r);
      glXGetConfig (dpy, vip, GLX_ACCUM_GREEN_SIZE, &g);
      glXGetConfig (dpy, vip, GLX_ACCUM_BLUE_SIZE,  &b);
      glXGetConfig (dpy, vip, GLX_ACCUM_ALPHA_SIZE, &a);
      printf ("    GLX accum:         RGBA (%2d, %2d, %2d, %2d)\n",
              r, g, b, a);
    }
  else
    {
      value = 0;
      glXGetConfig (dpy, vip, GLX_BUFFER_SIZE, &value);
      printf ("    GLX type:          indexed (%d)\n", value);
    }

# if 0  /* redundant */
  if (!glXGetConfig (dpy, vip, GLX_X_VISUAL_TYPE_EXT, &value))
      printf ("    GLX class:         %s\n",
              (value == GLX_TRUE_COLOR_EXT ? "TrueColor" :
               value == GLX_DIRECT_COLOR_EXT ? "DirectColor" :
               value == GLX_PSEUDO_COLOR_EXT ? "PseudoColor" :
               value == GLX_STATIC_COLOR_EXT ? "StaticColor" :
               value == GLX_GRAY_SCALE_EXT ? "Grayscale" :
               value == GLX_STATIC_GRAY_EXT ? "StaticGray" : "???"));
# endif

# ifdef GLX_VISUAL_CAVEAT_EXT
  if (!glXGetConfig (dpy, vip, GLX_VISUAL_CAVEAT_EXT, &value) &&
      value != GLX_NONE_EXT)
    printf ("    GLX rating:        %s\n",
            (value == GLX_NONE_EXT ? "none" :
             value == GLX_SLOW_VISUAL_EXT ? "slow" :
#   ifdef GLX_NON_CONFORMANT_EXT
             value == GLX_NON_CONFORMANT_EXT ? "non-conformant" :
#   endif
             "???"));
# endif

  if (!glXGetConfig (dpy, vip, GLX_DOUBLEBUFFER, &value))
    printf ("    GLX double-buffer: %s\n", (value ? "yes" : "no"));

  if (!glXGetConfig (dpy, vip, GLX_STEREO, &value) &&
      value)
    printf ("    GLX stereo:        %s\n", (value ? "yes" : "no"));

  if (!glXGetConfig (dpy, vip, GLX_AUX_BUFFERS, &value) &&
      value != 0)
    printf ("    GLX aux buffers:   %d\n", value);

  if (!glXGetConfig (dpy, vip, GLX_DEPTH_SIZE, &value))
    printf ("    GLX depth size:    %d\n", value);

  if (!glXGetConfig (dpy, vip, GLX_STENCIL_SIZE, &value) &&
      value != 0)
    printf ("    GLX stencil size:  %d\n", value);

# ifdef GLX_SAMPLE_BUFFERS_SGIS
  if (!glXGetConfig (dpy, vip, GLX_SAMPLE_BUFFERS_SGIS, &value) &&
      value != 0)
    {
      int bufs = value;
      if (!glXGetConfig (dpy, vip, GLX_SAMPLES_SGIS, &value))
        printf ("    GLX multisamplers: %d (%d)\n", bufs, value);
    }
# endif

  if (!glXGetConfig (dpy, vip, GLX_TRANSPARENT_TYPE_EXT, &value) &&
      value != GLX_NONE_EXT)
    {
      if (value == GLX_NONE_EXT)
        printf ("    GLX transparency:  none\n");
      else if (value == GLX_TRANSPARENT_INDEX_EXT)
        {
          if (!glXGetConfig (dpy, vip, GLX_TRANSPARENT_INDEX_VALUE_EXT,&value))
            printf ("    GLX transparency:  indexed (%d)\n", value);
        }
      else if (value == GLX_TRANSPARENT_RGB_EXT)
        {
          int r=0, g=0, b=0, a=0;
          glXGetConfig (dpy, vip, GLX_TRANSPARENT_RED_VALUE_EXT,   &r);
          glXGetConfig (dpy, vip, GLX_TRANSPARENT_GREEN_VALUE_EXT, &g);
          glXGetConfig (dpy, vip, GLX_TRANSPARENT_BLUE_VALUE_EXT,  &b);
          glXGetConfig (dpy, vip, GLX_TRANSPARENT_ALPHA_VALUE_EXT, &a);
          printf ("    GLX transparency:  RGBA (%2d, %2d, %2d, %2d)\n",
                  r, g, b, a);
        }
    }
}
#endif /* HAVE_GLX */


#ifdef HAVE_OVERLAY  /* Added by jwz, 11-Nov-99 */

 /* If the server's root window contains a SERVER_OVERLAY_VISUALS property,
    then that identifies the visuals which correspond to the video hardware's
    overlay planes.  Windows created in these kinds of visuals may have
    transparent pixels that let other layers shine through.

    This might not be an X Consortium standard, but it turns out that
    SGI, HP, DEC, and IBM all use this same mechanism.  So that's close
    enough for me.

    Documentation on the SERVER_OVERLAY_VISUALS property can be found at:
    http://www.hp.com/xwindow/sharedInfo/Whitepapers/Visuals/server_overlay_visuals.html
  */

struct overlay
{
  CARD32 visual_id;
  CARD32 transparency; /* 0: none; 1: pixel; 2: mask */
  CARD32 value;                /* the transparent pixel */
  CARD32 layer;                /* -1: underlay; 0: normal; 1: popup; 2: overlay */
};

struct overlay_list
{
  int count;
  struct overlay *list;
};

static struct overlay_list *overlays = 0;

static void
find_overlay_info (dpy)
  Display *dpy;
{
  int screen;
  Atom OVERLAY = XInternAtom (dpy, "SERVER_OVERLAY_VISUALS", False);

  overlays = (struct overlay_list *) calloc (sizeof (struct overlay_list),
                                             ScreenCount (dpy));

  for (screen = 0; screen < ScreenCount (dpy); screen++)
    {
      Window window = RootWindow (dpy, screen);
      Atom actual_type;
      int actual_format;
      unsigned long nitems, bytes_after;
      struct overlay *data = 0;
      int result = XGetWindowProperty (dpy, window, OVERLAY,
                                       0, (65536 / sizeof (long)), False, 
                                       OVERLAY, &actual_type, &actual_format,
                                       &nitems, &bytes_after,
                                       (unsigned char **) &data);
      if (result == Success &&
          actual_type == OVERLAY &&
          actual_format == 32 &&
          nitems > 0)
        {
          overlays[screen].count = (nitems /
                                    (sizeof(struct overlay) / sizeof(CARD32)));
          overlays[screen].list = data;
        }
      else if (data)
        XFree((char *) data);
    }
}

static void
print_overlay_visual_info (vip)
    XVisualInfo *vip;
{
  int i;
  int vis = vip->visualid;
  int scr = vip->screen;
  if (!overlays) return;
  for (i = 0; i < overlays[scr].count; i++)
    if (vis == overlays[scr].list[i].visual_id)
      {
        struct overlay *ov = &overlays[scr].list[i];
        printf ("    Overlay info:      layer %ld (%s), ",
                (long) ov->layer,
                (ov->layer == -1 ? "underlay" :
                 ov->layer ==  0 ? "normal" :
                 ov->layer ==  1 ? "popup" :
                 ov->layer ==  2 ? "overlay" : "???"));
        if (ov->transparency == 1)
          printf ("transparent pixel %lu\n", (unsigned long) ov->value);
        else if (ov->transparency == 2)
          printf ("transparent mask 0x%x\n", (unsigned) ov->value);
        else
          printf ("opaque\n");
      }
}
#endif /* HAVE_OVERLAY */


static void
print_extension_info (dpy)
    Display *dpy;
{
    int n = 0;
    char **extlist = XListExtensions (dpy, &n);

    printf ("number of extensions:    %d\n", n);

    if (extlist) {
	register int i;
	int opcode, event, error;

	qsort(extlist, n, sizeof(char *), StrCmp);
	for (i = 0; i < n; i++) {
	    if (!queryExtensions) {
		printf ("    %s\n", extlist[i]);
		continue;
	    }
	    XQueryExtension(dpy, extlist[i], &opcode, &event, &error);
	    printf ("    %s  (opcode: %d", extlist[i], opcode);
	    if (event)
		printf (", base event: %d", event);
	    if (error)
		printf (", base error: %d", error);
	    printf(")\n");
	}
	/* do not free, Xlib can depend on contents being unaltered */
	/* XFreeExtensionList (extlist); */
    }
}

static void
print_display_info (dpy)
    Display *dpy;
{
    char dummybuf[40];
    char *cp;
    int minkeycode, maxkeycode;
    int i, n;
    long req_size;
    XPixmapFormatValues *pmf;
    Window focuswin;
    int focusrevert;

    printf ("name of display:    %s\n", DisplayString (dpy));
    printf ("version number:    %d.%d\n",
	    ProtocolVersion (dpy), ProtocolRevision (dpy));
    printf ("vendor string:    %s\n", ServerVendor (dpy));
    printf ("vendor release number:    %d\n", VendorRelease (dpy));

#ifdef HAVE_GLX
    print_glx_versions (dpy);
#endif /* HAVE_GLX */

    req_size = XExtendedMaxRequestSize (dpy);
    if (!req_size) req_size = XMaxRequestSize (dpy);
    printf ("maximum request size:  %ld bytes\n", req_size * 4);
    printf ("motion buffer size:  %d\n", (int) XDisplayMotionBufferSize(dpy));

    switch (BitmapBitOrder (dpy)) {
      case LSBFirst:    cp = "LSBFirst"; break;
      case MSBFirst:    cp = "MSBFirst"; break;
      default:    
	sprintf (dummybuf, "unknown order %d", BitmapBitOrder (dpy));
	cp = dummybuf;
	break;
    }
    printf ("bitmap unit, bit order, padding:    %d, %s, %d\n",
	    BitmapUnit (dpy), cp, BitmapPad (dpy));

    switch (ImageByteOrder (dpy)) {
      case LSBFirst:    cp = "LSBFirst"; break;
      case MSBFirst:    cp = "MSBFirst"; break;
      default:    
	sprintf (dummybuf, "unknown order %d", ImageByteOrder (dpy));
	cp = dummybuf;
	break;
    }
    printf ("image byte order:    %s\n", cp);

    pmf = XListPixmapFormats (dpy, &n);
    printf ("number of supported pixmap formats:    %d\n", n);
    if (pmf) {
	printf ("supported pixmap formats:\n");
	for (i = 0; i < n; i++) {
	    printf ("    depth %d, bits_per_pixel %d, scanline_pad %d\n",
		    pmf[i].depth, pmf[i].bits_per_pixel, pmf[i].scanline_pad);
	}
	XFree ((char *) pmf);
    }


    /*
     * when we get interfaces to the PixmapFormat stuff, insert code here
     */

    XDisplayKeycodes (dpy, &minkeycode, &maxkeycode);
    printf ("keycode range:    minimum %d, maximum %d\n",
	    minkeycode, maxkeycode);

    XGetInputFocus (dpy, &focuswin, &focusrevert);
    printf ("focus:  ");
    switch (focuswin) {
      case PointerRoot:
	printf ("PointerRoot\n");
	break;
      case None:
	printf ("None\n");
	break;
      default:
	printf("window 0x%lx, revert to ", focuswin);
	switch (focusrevert) {
	  case RevertToParent:
	    printf ("Parent\n");
	    break;
	  case RevertToNone:
	    printf ("None\n");
	    break;
	  case RevertToPointerRoot:
	    printf ("PointerRoot\n");
	    break;
	  default:			/* should not happen */
	    printf ("%d\n", focusrevert);
	    break;
	}
	break;
    }

    print_extension_info (dpy);

    printf ("default screen number:    %d\n", DefaultScreen (dpy));
    printf ("number of screens:    %d\n", ScreenCount (dpy));
}

static void
print_visual_info (vip)
    XVisualInfo *vip;
{
    char errorbuf[40];			/* for sprintfing into */
    char *class = NULL;			/* for printing */

    switch (vip->class) {
      case StaticGray:    class = "StaticGray"; break;
      case GrayScale:    class = "GrayScale"; break;
      case StaticColor:    class = "StaticColor"; break;
      case PseudoColor:    class = "PseudoColor"; break;
      case TrueColor:    class = "TrueColor"; break;
      case DirectColor:    class = "DirectColor"; break;
      default:    
	sprintf (errorbuf, "unknown class %d", vip->class);
	class = errorbuf;
	break;
    }

    printf ("  visual:\n");
    printf ("    visual id:    0x%lx\n", vip->visualid);
    printf ("    class:    %s\n", class);
    printf ("    depth:    %d plane%s\n", vip->depth, 
	    vip->depth == 1 ? "" : "s");
    if (vip->class == TrueColor || vip->class == DirectColor)
	printf ("    available colormap entries:    %d per subfield\n",
		vip->colormap_size);
    else
	printf ("    available colormap entries:    %d\n",
		vip->colormap_size);
    printf ("    red, green, blue masks:    0x%lx, 0x%lx, 0x%lx\n",
	    vip->red_mask, vip->green_mask, vip->blue_mask);
    printf ("    significant bits in color specification:    %d bits\n",
	    vip->bits_per_rgb);
}

static void
print_screen_info (dpy, scr)
    Display *dpy;
    int scr;
{
    Screen *s = ScreenOfDisplay (dpy, scr);  /* opaque structure */
    XVisualInfo viproto;		/* fill in for getting info */
    XVisualInfo *vip;			/* retured info */
    int nvi;				/* number of elements returned */
    int i;				/* temp variable: iterator */
    char eventbuf[80];			/* want 79 chars per line + nul */
    static char *yes = "YES", *no = "NO", *when = "WHEN MAPPED";
    double xres, yres;
    int ndepths = 0, *depths = NULL;
    unsigned int width, height;


    /*
     * there are 2.54 centimeters to an inch; so there are 25.4 millimeters.
     *
     *     dpi = N pixels / (M millimeters / (25.4 millimeters / 1 inch))
     *         = N pixels / (M inch / 25.4)
     *         = N * 25.4 pixels / M inch
     */

    xres = ((((double) DisplayWidth(dpy,scr)) * 25.4) / 
	    ((double) DisplayWidthMM(dpy,scr)));
    yres = ((((double) DisplayHeight(dpy,scr)) * 25.4) / 
	    ((double) DisplayHeightMM(dpy,scr)));

    printf ("\n");
    printf ("screen #%d:\n", scr);
    printf ("  dimensions:    %dx%d pixels (%dx%d millimeters)\n",
	    DisplayWidth (dpy, scr), DisplayHeight (dpy, scr),
	    DisplayWidthMM(dpy, scr), DisplayHeightMM (dpy, scr));
    printf ("  resolution:    %dx%d dots per inch\n", 
	    (int) (xres + 0.5), (int) (yres + 0.5));
    depths = XListDepths (dpy, scr, &ndepths);
    if (!depths) ndepths = 0;
    printf ("  depths (%d):    ", ndepths);
    for (i = 0; i < ndepths; i++) {
	printf ("%d", depths[i]);
	if (i < ndepths - 1) { 
	    putchar (',');
	    putchar (' ');
	}
    }
    putchar ('\n');
    if (depths) XFree ((char *) depths);
    printf ("  root window id:    0x%lx\n", RootWindow (dpy, scr));
    printf ("  depth of root window:    %d plane%s\n",
	    DisplayPlanes (dpy, scr),
	    DisplayPlanes (dpy, scr) == 1 ? "" : "s");
    printf ("  number of colormaps:    minimum %d, maximum %d\n",
	    MinCmapsOfScreen(s), MaxCmapsOfScreen(s));
    printf ("  default colormap:    0x%lx\n", DefaultColormap (dpy, scr));
    printf ("  default number of colormap cells:    %d\n",
	    DisplayCells (dpy, scr));
    printf ("  preallocated pixels:    black %ld, white %ld\n",
	    BlackPixel (dpy, scr), WhitePixel (dpy, scr));
    printf ("  options:    backing-store %s, save-unders %s\n",
	    (DoesBackingStore (s) == NotUseful) ? no :
	    ((DoesBackingStore (s) == Always) ? yes : when),
	    DoesSaveUnders (s) ? yes : no);
    XQueryBestSize (dpy, CursorShape, RootWindow (dpy, scr), 65535, 65535,
		    &width, &height);
    if (width == 65535 && height == 65535)
	printf ("  largest cursor:    unlimited\n");
    else
	printf ("  largest cursor:    %dx%d\n", width, height);
    printf ("  current input event mask:    0x%lx\n", EventMaskOfScreen (s));
    (void) print_event_mask (eventbuf, 79, 4, EventMaskOfScreen (s));
		      

    nvi = 0;
    viproto.screen = scr;
    vip = XGetVisualInfo (dpy, VisualScreenMask, &viproto, &nvi);
    printf ("  number of visuals:    %d\n", nvi);
    printf ("  default visual id:  0x%lx\n", 
	    XVisualIDFromVisual (DefaultVisual (dpy, scr)));
    for (i = 0; i < nvi; i++) {
	print_visual_info (vip+i);
#ifdef HAVE_OVERLAY
       print_overlay_visual_info (vip+i);
#endif /* HAVE_OVERLAY */
#ifdef HAVE_GLX
       print_glx_visual_info (dpy, vip+i);
#endif /* HAVE_GLX */
    }
    if (vip) XFree ((char *) vip);
}

/*
 * The following routine prints out an event mask, wrapping events at nice
 * boundaries.
 */

#define MASK_NAME_WIDTH 25

static struct _event_table {
    char *name;
    long value;
} event_table[] = {
    { "KeyPressMask             ", KeyPressMask },
    { "KeyReleaseMask           ", KeyReleaseMask },
    { "ButtonPressMask          ", ButtonPressMask },
    { "ButtonReleaseMask        ", ButtonReleaseMask },
    { "EnterWindowMask          ", EnterWindowMask },
    { "LeaveWindowMask          ", LeaveWindowMask },
    { "PointerMotionMask        ", PointerMotionMask },
    { "PointerMotionHintMask    ", PointerMotionHintMask },
    { "Button1MotionMask        ", Button1MotionMask },
    { "Button2MotionMask        ", Button2MotionMask },
    { "Button3MotionMask        ", Button3MotionMask },
    { "Button4MotionMask        ", Button4MotionMask },
    { "Button5MotionMask        ", Button5MotionMask },
    { "ButtonMotionMask         ", ButtonMotionMask },
    { "KeymapStateMask          ", KeymapStateMask },
    { "ExposureMask             ", ExposureMask },
    { "VisibilityChangeMask     ", VisibilityChangeMask },
    { "StructureNotifyMask      ", StructureNotifyMask },
    { "ResizeRedirectMask       ", ResizeRedirectMask },
    { "SubstructureNotifyMask   ", SubstructureNotifyMask },
    { "SubstructureRedirectMask ", SubstructureRedirectMask },
    { "FocusChangeMask          ", FocusChangeMask },
    { "PropertyChangeMask       ", PropertyChangeMask },
    { "ColormapChangeMask       ", ColormapChangeMask },
    { "OwnerGrabButtonMask      ", OwnerGrabButtonMask },
    { NULL, 0 }};

static int print_event_mask (char *buf, int lastcol, int indent, long mask)
{
    struct _event_table *etp;
    int len;
    int bitsfound = 0;

    buf[0] = buf[lastcol] = '\0';	/* just in case */

#define INDENT() { register int i; len = indent; \
		   for (i = 0; i < indent; i++) buf[i] = ' '; }

    INDENT ();

    for (etp = event_table; etp->name; etp++) {
	if (mask & etp->value) {
	    if (len + MASK_NAME_WIDTH > lastcol) {
		puts (buf);
		INDENT ();
	    }
	    strcpy (buf+len, etp->name);
	    len += MASK_NAME_WIDTH;
	    bitsfound++;
	}
    }

    if (bitsfound) puts (buf);

#undef INDENT

    return (bitsfound);
}

static void
print_standard_extension_info(dpy, extname, majorrev, minorrev)
    Display *dpy;
    char *extname;
    int majorrev, minorrev;
{
    int opcode, event, error;

    printf("%s version %d.%d ", extname, majorrev, minorrev);

    XQueryExtension(dpy, extname, &opcode, &event, &error);
    printf ("opcode: %d", opcode);
    if (event)
	printf (", base event: %d", event);
    if (error)
	printf (", base error: %d", error);
    printf("\n");
}

static int
print_multibuf_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int i, j;			/* temp variable: iterator */
    int nmono, nstereo;		/* count */
    XmbufBufferInfo *mono_info = NULL, *stereo_info = NULL; /* arrays */
    static char *fmt = 
	"    visual id, max buffers, depth:    0x%lx, %d, %d\n";
    int scr = 0;
    int majorrev, minorrev;

    if (!XmbufGetVersion(dpy, &majorrev, &minorrev))
	return 0;

    print_standard_extension_info(dpy, extname, majorrev, minorrev);

    for (i = 0; i < ScreenCount (dpy); i++)
    {
	if (!XmbufGetScreenInfo (dpy, RootWindow(dpy, scr), &nmono, &mono_info,
				 &nstereo, &stereo_info)) {
	    fprintf (stderr,
		     "%s:  unable to get multibuffer info for screen %d\n",
		     ProgramName, scr);
	} else {
	    printf ("  screen %d number of mono multibuffer types:    %d\n", i, nmono);
	    for (j = 0; j < nmono; j++) {
		printf (fmt, mono_info[j].visualid, mono_info[j].max_buffers,
			mono_info[j].depth);
	    }
	    printf ("  number of stereo multibuffer types:    %d\n", nstereo);
	    for (j = 0; j < nstereo; j++) {
		printf (fmt, stereo_info[j].visualid,
			stereo_info[j].max_buffers, stereo_info[j].depth);
	    }
	    if (mono_info) XFree ((char *) mono_info);
	    if (stereo_info) XFree ((char *) stereo_info);
	}
    }
    return 1;
} /* end print_multibuf_info */


/* XIE stuff */

#ifdef HAVE_XIE

char *subset_names[] = { NULL, "FULL", "DIS" };
char *align_names[] = { NULL, "Alignable", "Arbitrary" };
char *group_names[] = { /* 0  */ "Default",
			    /* 2  */ "ColorAlloc",
			    /* 4  */ "Constrain",
			    /* 6  */ "ConvertFromRGB",
			    /* 8  */ "ConvertToRGB",
			    /* 10 */ "Convolve",
			    /* 12 */ "Decode",
			    /* 14 */ "Dither",
			    /* 16 */ "Encode",
			    /* 18 */ "Gamut",
			    /* 20 */ "Geometry",
			    /* 22 */ "Histogram",
			    /* 24 */ "WhiteAdjust"
			    };

int
print_xie_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    XieExtensionInfo *xieInfo;
    int i;
    int ntechs;
    XieTechnique *techs;
    XieTechniqueGroup prevGroup;

    if (!XieInitialize(dpy, &xieInfo ))
	return 0;

    print_standard_extension_info(dpy, extname,
	xieInfo->server_major_rev, xieInfo->server_minor_rev);

    printf("  service class: %s\n", subset_names[xieInfo->service_class]);
    printf("  alignment: %s\n", align_names[xieInfo->alignment]);
    printf("  uncnst_mantissa: %d\n", xieInfo->uncnst_mantissa);
    printf("  uncnst_min_exp: %d\n", xieInfo->uncnst_min_exp);
    printf("  uncnst_max_exp: %d\n", xieInfo->uncnst_max_exp);
    printf("  cnst_levels:"); 
    for (i = 0; i < xieInfo->n_cnst_levels; i++)
	printf(" %d", xieInfo->cnst_levels[i]);
    printf("\n");

    if (!XieQueryTechniques(dpy, xieValAll, &ntechs, &techs))
	return 1;

    prevGroup = -1;

    for (i = 0; i < ntechs; i++)
    {
	if (techs[i].group != prevGroup)
	{
	    printf("  technique group: %s\n", group_names[techs[i].group >> 1]);
	    prevGroup = techs[i].group;
	}
	printf("    %s\tspeed: %d  needs_param: %s  number: %d\n",
	       techs[i].name,
	       techs[i].speed, (techs[i].needs_param ? "True " : "False"),
	       techs[i].number);
    }
    return 1;
} /* end print_xie_info */

#endif /* HAVE_XIE */


#ifdef HAVE_XTEST
int
print_xtest_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev, foo;

    if (!XTestQueryExtension(dpy, &foo, &foo, &majorrev, &minorrev))
	return 0;
    print_standard_extension_info(dpy, extname, majorrev, minorrev);
    return 1;
}
#endif /* HAVE_XTEST */

static int
print_sync_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev;
    XSyncSystemCounter *syscounters;
    int ncounters, i;

    if (!XSyncInitialize(dpy, &majorrev, &minorrev))
	return 0;
    print_standard_extension_info(dpy, extname, majorrev, minorrev);

    syscounters = XSyncListSystemCounters(dpy, &ncounters);
    printf("  system counters: %d\n", ncounters);
    for (i = 0; i < ncounters; i++)
    {
	printf("    %s  id: 0x%08x  resolution_lo: %d  resolution_hi: %d\n",
	       syscounters[i].name, (int) syscounters[i].counter,
	       (int) XSyncValueLow32(syscounters[i].resolution),
               (int) XSyncValueHigh32(syscounters[i].resolution));
    }
    XSyncFreeSystemCounterList(syscounters);
    return 1;
}

static int
print_shape_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev;

    if (!XShapeQueryVersion(dpy, &majorrev, &minorrev))
	return 0;
    print_standard_extension_info(dpy, extname, majorrev, minorrev);
    return 1;
}

#ifdef MITSHM
static int
print_mitshm_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev;
    Bool sharedPixmaps;

    if (!XShmQueryVersion(dpy, &majorrev, &minorrev, &sharedPixmaps))
	return 0;
    print_standard_extension_info(dpy, extname, majorrev, minorrev);
    printf("  shared pixmaps: ");
    if (sharedPixmaps)
    {
	int format = XShmPixmapFormat(dpy);
	printf("yes, format: %d\n", format);
    }
    else
    {
	printf("no\n");
    }
    return 1;
}
#endif /* MITSHM */

static int
print_dbe_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev;
    XdbeScreenVisualInfo *svi;
    int numscreens = 0;
    int iscrn, ivis;

    if (!XdbeQueryExtension(dpy, &majorrev, &minorrev))
	return 0;

    print_standard_extension_info(dpy, extname, majorrev, minorrev);
    svi = XdbeGetVisualInfo(dpy, (Drawable *)NULL, &numscreens);
    for (iscrn = 0; iscrn < numscreens; iscrn++)
    {
	printf("  Double-buffered visuals on screen %d\n", iscrn);
	for (ivis = 0; ivis < svi[iscrn].count; ivis++)
	{
	    printf("    visual id 0x%lx  depth %d  perflevel %d\n",
		   svi[iscrn].visinfo[ivis].visual,
		   svi[iscrn].visinfo[ivis].depth,
		   svi[iscrn].visinfo[ivis].perflevel);
	}
    }
    XdbeFreeVisualInfo(svi);
    return 1;
}

#ifdef HAVE_XRECORD
static int
print_record_info(dpy, extname)
    Display *dpy;
    char *extname;
{
    int majorrev, minorrev;

    if (!XRecordQueryVersion(dpy, &majorrev, &minorrev))
	return 0;
    print_standard_extension_info(dpy, extname, majorrev, minorrev);
    return 1;
}
#endif /* HAVE_XRECORD */

/* utilities to manage the list of recognized extensions */


typedef int (*ExtensionPrintFunc)(
#if NeedFunctionPrototypes
    Display *, char *
#endif
);

typedef struct {
    char *extname;
    ExtensionPrintFunc printfunc;
    Bool printit;
} ExtensionPrintInfo;

ExtensionPrintInfo known_extensions[] =
{
#ifdef MITSHM
    {"MIT-SHM",	print_mitshm_info, False},
#endif /* MITSHM */
    {MULTIBUFFER_PROTOCOL_NAME,	print_multibuf_info, False},
    {"SHAPE", print_shape_info, False},
    {SYNC_NAME, print_sync_info, False},
#ifdef HAVE_XIE
    {xieExtName, print_xie_info, False},
#endif /* HAVE_XIE */
#ifdef HAVE_XTEST
    {XTestExtensionName, print_xtest_info, False},
#endif /* HAVE_XTEST */
    {"DOUBLE-BUFFER", print_dbe_info, False},
#ifdef HAVE_XRECORD
    {"RECORD", print_record_info, False}    
#endif /* HAVE_XRECORD */
    /* add new extensions here */
    /* wish list: PEX XKB LBX */
};

int num_known_extensions = sizeof known_extensions / sizeof known_extensions[0];

static void
print_known_extensions(f)
    FILE *f;
{
    int i;
    for (i = 0; i < num_known_extensions; i++)
    {
	fprintf(f, "%s ", known_extensions[i].extname);
    }
}

static void
mark_extension_for_printing(extname)
    char *extname;
{
    int i;

    if (strcmp(extname, "all") == 0)
    {
	for (i = 0; i < num_known_extensions; i++)
	    known_extensions[i].printit = True;
    }
    else
    {
	for (i = 0; i < num_known_extensions; i++)
	{
	    if (strcmp(extname, known_extensions[i].extname) == 0)
	    {
		known_extensions[i].printit = True;
		return;
	    }
	}
	printf("%s extension not supported by %s\n", extname, ProgramName);
    }
}

static void
print_marked_extensions(dpy)
    Display *dpy;
{
    int i;
    for (i = 0; i < num_known_extensions; i++)
    {
	if (known_extensions[i].printit)
	{
	    printf("\n");
	    if (! (*known_extensions[i].printfunc)(dpy,
					known_extensions[i].extname))
	    {
		printf("%s extension not supported by server\n",
		       known_extensions[i].extname);
	    }
	}
    }
}

static void usage ()
{
    fprintf (stderr, "usage:  %s [options]\n", ProgramName);
    fprintf (stderr, "-display displayname\tserver to query\n");
    fprintf (stderr, "-queryExtensions\tprint info returned by XQueryExtension\n");
    fprintf (stderr, "-ext all\t\tprint detailed info for all supported extensions\n");
    fprintf (stderr, "-ext extension-name\tprint detailed info for extension-name if one of:\n     ");
    print_known_extensions(stderr);
    fprintf (stderr, "\n");
    exit (1);
}

int main (argc, argv)
    int argc;
    char *argv[];
{
    Display *dpy;			/* X connection */
    char *displayname = NULL;		/* server to contact */
    int i;				/* temp variable:  iterator */

    ProgramName = argv[0];

    for (i = 1; i < argc; i++) {
	char *arg = argv[i];
	int len = strlen(arg);
	
	if (!strncmp("-display", arg, len)) {
	    if (++i >= argc) usage ();
	    displayname = argv[i];
	} else if (!strncmp("-queryExtensions", arg, len)) {
	    queryExtensions = True;
	} else if (!strncmp("-ext", arg, len)) {
	    if (++i >= argc) usage ();
	    mark_extension_for_printing(argv[i]);
	} else
	    usage ();
    }

    dpy = XOpenDisplay (displayname);
    if (!dpy) {
	fprintf (stderr, "%s:  unable to open display \"%s\".\n",
		 ProgramName, XDisplayName (displayname));
	exit (1);
    }

#ifdef HAVE_OVERLAY
       find_overlay_info (dpy);
#endif /* HAVE_OVERLAY */

    print_display_info (dpy);
    for (i = 0; i < ScreenCount (dpy); i++) {
	print_screen_info (dpy, i);
    }

    print_marked_extensions(dpy);

    XCloseDisplay (dpy);
    exit (0);
}