summaryrefslogtreecommitdiffstats
path: root/src/jogl/classes/javax/media/opengl/GLProfile.java
blob: 6591f4ae1ff06fb55c5e8406a00aa1f7edd183ba (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
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
 * Copyright (c) 2010 JogAmp Community. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed or intended for use
 * in the design, construction, operation or maintenance of any nuclear
 * facility.
 */

package javax.media.opengl;

import jogamp.opengl.Debug;
import jogamp.opengl.GLDrawableFactoryImpl;
import jogamp.opengl.GLDynamicLookupHelper;
import jogamp.opengl.DesktopGLDynamicLookupHelper;

import com.jogamp.common.GlueGenVersion;
import com.jogamp.common.jvm.JNILibLoaderBase;
import com.jogamp.common.os.Platform;
import com.jogamp.common.util.ReflectionUtil;
import com.jogamp.common.util.VersionUtil;
import com.jogamp.common.util.cache.TempJarCache;
import com.jogamp.nativewindow.NativeWindowVersion;
import com.jogamp.opengl.JoglVersion;

import javax.media.nativewindow.AbstractGraphicsDevice;
import javax.media.nativewindow.NativeWindowFactory;
import javax.media.opengl.fixedfunc.GLPointerFunc;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

/**
 * Specifies the the OpenGL profile.
 * 
 * This class static singleton initialization queries the availability of all OpenGL Profiles
 * and instantiates singleton GLProfile objects for each available profile.
 *
 * The platform default profile may be used, using {@link GLProfile#GetProfileDefault()}, 
 * or more specialized versions using the other static GetProfile methods.
 */
public class GLProfile {
    
    public static final boolean DEBUG = Debug.debug("GLProfile");

    static {
        // Also initializes TempJarCache if shall be used.
        Platform.initSingleton();
    }
    
    /**
     * Static one time initialization of JOGL.
     * <p>
     * The parameter <code>firstUIActionOnProcess</code> has an impact on concurrent locking,<br>
     * see {@link javax.media.nativewindow.NativeWindowFactory#initSingleton(boolean) NativeWindowFactory.initSingleton(firstUIActionOnProcess)}.
     * </p>
     * <p>
     * Applications shall call this methods <b>ASAP</b>, before any other UI invocation.<br>
     * You may issue the call in your <code>main class</code> static block, which is the earliest point in your application/applet lifecycle,
     * or within the <code>main function</code>.<br>
     * In case applications are able to initialize JOGL before any other UI action,<br>
     * they shall invoke this method with <code>firstUIActionOnProcess=true</code> and benefit from fast native multithreading support on all platforms if possible.</P>
     * <P>
     * RCP Application (Applet's, Webstart, Netbeans, ..) using JOGL may not be able to initialize JOGL
     * before the first UI action.<br>
     * In such case you shall invoke this method with <code>firstUIActionOnProcess=false</code>.<br>
     * On some platforms, notably X11 with AWT usage, JOGL will utilize special locking mechanisms which may slow down your
     * application.</P>
     * <P>
     * Remark: NEWT is currently not affected by this behavior, ie always uses native multithreading.</P>
     * <P>
     * However, in case this method is not invoked, hence GLProfile is not initialized explicitly by the user,<br>
     * the first call to {@link #getDefault()}, {@link #get(java.lang.String)}, etc, will initialize with <code>firstUIActionOnProcess=false</code>,<br>
     * hence without the possibility to enable native multithreading.<br>
     * This is not the recommended way, since it may has a performance impact, but it allows you to run code without explicit initialization.</P>
     * <P>
     *
     * @param firstUIActionOnProcess Should be <code>true</code> if called before the first UI action of the running program,
     * otherwise <code>false</code>.
     */
    public static void initSingleton(final boolean firstUIActionOnProcess) {
        if(!initialized) { // volatile: ok
            synchronized(GLProfile.class) {
                if(!initialized) {
                    initialized = true;
                    Platform.initSingleton();
        
                    // run the whole static initialization privileged to speed up,
                    // since this skips checking further access
                    AccessController.doPrivileged(new PrivilegedAction<Object>() {
                        public Object run() {
                            if(TempJarCache.isInitialized()) {
                               String[] atomicNativeJarBaseNames = new String[] { "nativewindow", "jogl", null };
                               if( ReflectionUtil.isClassAvailable("com.jogamp.newt.NewtFactory", GLProfile.class.getClassLoader()) ) {
                                   atomicNativeJarBaseNames[2] = "newt";
                               }
                               JNILibLoaderBase.addNativeJarLibs(GLProfile.class, "jogl-all", atomicNativeJarBaseNames);
                            }
                            initProfilesForDefaultDevices(firstUIActionOnProcess);
                            return null;
                        }
                    });
                }
            }
        }
    }

    /**
     * Trigger eager initialization of GLProfiles for the given device,
     * in case it isn't done yet.
     * 
     * @throws GLException if no profile for the given device is available.
     */
    public static void initProfiles(AbstractGraphicsDevice device) throws GLException {
        getProfileMap(device);
    }

    /**
     * Manual shutdown method, may be called after your last JOGL use
     * within the running JVM.<br>
     * It releases all temporary created resources, ie issues {@link javax.media.opengl.GLDrawableFactory#shutdown()}.<br>
     * The shutdown implementation is called via the JVM shutdown hook, if not manually invoked here.<br>
     * Invoke <code>shutdown()</code> manually is recommended, due to the unreliable JVM state within the shutdown hook.<br>
     */
    public static void shutdown() {
        if(initialized) { // volatile: ok
            synchronized(GLProfile.class) {
                if(initialized) {
                    initialized = false;
                    GLDrawableFactory.shutdown(); // may utilize static GLContext mappings
                    GLContext.shutdown(); // does not utilize shared resources of GLDrawableFactory
                    NativeWindowFactory.shutdown();
                }
            }
        }
    }

    //
    // Query platform available OpenGL implementation
    //

    /** 
     * Returns the availability of a profile on a device.
     * 
     * @param device a valid AbstractGraphicsDevice, or <code>null</null> for the default device.
     * @param profile a valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..), 
     *        or <code>[ null, GL ]</code> for the default profile.
     * @return true if the profile is available for the device, otherwise false.
     */
    public static boolean isAvailable(AbstractGraphicsDevice device, String profile) {
        try {
            return null != getProfileMap(device).get(profile);
        } catch (GLException gle) { /* profiles for device n/a */ }
        return false;
    }

    /** 
     * Returns the availability of a profile on the default device.
     * 
     * @param profile a valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..), 
     *        or <code>[ null, GL ]</code> for the default profile.
     * @return true if the profile is available for the default device, otherwise false.
     */
    public static boolean isAvailable(String profile) {
        return isAvailable(null, profile);
    }
    
    /** 
     * Returns the availability of any profile on the default device.
     * 
     * @return true if any profile is available for the default device, otherwise false.
     */
    public static boolean isAnyAvailable() {
        return isAvailable(null, null);
    }
    
    public static String glAvailabilityToString(AbstractGraphicsDevice device) {
        boolean avail;
        StringBuffer sb = new StringBuffer();

        validateInitialization();

        if(null==device) {
            device = defaultDevice;
        }

        sb.append("GLAvailability[Native[GL4bc ");
        avail=isAvailable(device, GL4bc);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 4, GLContext.CTX_PROFILE_COMPAT);
        }

        sb.append(", GL4 ");
        avail=isAvailable(device, GL4);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 4, GLContext.CTX_PROFILE_CORE);
        }

        sb.append(", GL3bc ");
        avail=isAvailable(device, GL3bc);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 3, GLContext.CTX_PROFILE_COMPAT);
        }

        sb.append(", GL3 ");
        avail=isAvailable(device, GL3);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 3, GLContext.CTX_PROFILE_CORE);
        }

        sb.append(", GL2 ");
        avail=isAvailable(device, GL2);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 2, GLContext.CTX_PROFILE_COMPAT);
        }

        sb.append(", GL2ES1 ");
        sb.append(isAvailable(device, GL2ES1));

        sb.append(", GLES1 ");
        avail=isAvailable(device, GLES1);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 1, GLContext.CTX_PROFILE_ES);
        }

        sb.append(", GL2ES2 ");
        sb.append(isAvailable(device, GL2ES2));

        sb.append(", GLES2 ");
        avail=isAvailable(device, GLES2);
        sb.append(avail);
        if(avail) {
            glAvailabilityToString(device, sb, 2, GLContext.CTX_PROFILE_ES);
        }

        sb.append("], Profiles[");
        HashMap<String /*GLProfile_name*/, GLProfile> profileMap = null;
        try {
            profileMap = getProfileMap(device);
        } catch (GLException gle) { /* profiles for device n/a */ }
        if(null != profileMap) {
            for(Iterator<GLProfile> i=profileMap.values().iterator(); i.hasNext(); ) {
                sb.append(i.next().toString());
                sb.append(", ");
            }
            sb.append(", default ");
            try {
                sb.append(getDefault(device));
            } catch (GLException gle) {
                sb.append("n/a");
            }
        }
        sb.append("]]");

        return sb.toString();
    }

    /** Uses the default device */
    public static String glAvailabilityToString() {
        return glAvailabilityToString(null);
    }

    //
    // Public (user-visible) profiles
    //

    /** The desktop OpenGL compatibility profile 4.x, with x >= 0, ie GL2 plus GL4.<br>
        <code>bc</code> stands for backward compatibility. */
    public static final String GL4bc = "GL4bc";

    /** The desktop OpenGL core profile 4.x, with x >= 0 */
    public static final String GL4   = "GL4";

    /** The desktop OpenGL compatibility profile 3.x, with x >= 1, ie GL2 plus GL3.<br>
        <code>bc</code> stands for backward compatibility. */
    public static final String GL3bc = "GL3bc";

    /** The desktop OpenGL core profile 3.x, with x >= 1 */
    public static final String GL3   = "GL3";

    /** The desktop OpenGL profile 1.x up to 3.0 */
    public static final String GL2   = "GL2";

    /** The embedded OpenGL profile ES 1.x, with x >= 0 */
    public static final String GLES1 = "GLES1";

    /** The embedded OpenGL profile ES 2.x, with x >= 0 */
    public static final String GLES2 = "GLES2";

    /** The intersection of the desktop GL2 and embedded ES1 profile */
    public static final String GL2ES1 = "GL2ES1";

    /** The intersection of the desktop GL3, GL2 and embedded ES2 profile */
    public static final String GL2ES2 = "GL2ES2";

    /** The intersection of the desktop GL3 and GL2 profile */
    public static final String GL2GL3 = "GL2GL3";

    /** The default profile, used for the device default profile map  */
    private static final String GL_DEFAULT = "GL_DEFAULT";

    /** 
     * All GL Profiles in the order of default detection.
     * Desktop compatibility profiles (the one with fixed function pipeline) comes first
     * from highest to lowest version.
     * <p> This includes the generic subset profiles GL2GL3, GL2ES2 and GL2ES1.</p>
     *
     * <ul>
     *  <li> GL4bc
     *  <li> GL3bc
     *  <li> GL2
     *  <li> GL4
     *  <li> GL3
     *  <li> GL2GL3
     *  <li> GLES2
     *  <li> GL2ES2
     *  <li> GLES1
     *  <li> GL2ES1
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_ALL = new String[] { GL4bc, GL3bc, GL2, GL4, GL3, GL2GL3, GLES2, GL2ES2, GLES1, GL2ES1 };

    /**
     * Order of maximum profiles.
     *
     * <ul>
     *  <li> GL4bc
     *  <li> GL4
     *  <li> GL3bc
     *  <li> GL3
     *  <li> GL2
     *  <li> GLES2
     *  <li> GLES1
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_MAX = new String[] { GL4bc, GL4, GL3bc, GL3, GL2, GLES2, GLES1 };

    /**
     * Order of minimum profiles.
     *
     * <ul>
     *  <li> GLES1
     *  <li> GLES2
     *  <li> GL2
     *  <li> GL3
     *  <li> GL3bc
     *  <li> GL4
     *  <li> GL4bc
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_MIN = new String[] { GLES1, GLES2, GL2, GL3, GL3bc, GL4, GL4bc };
    
    /**
     * Order of minimum original desktop profiles.
     *
     * <ul>
     *  <li> GL2
     *  <li> GL3bc
     *  <li> GL4bc
     *  <li> GL3
     *  <li> GL4
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_MIN_DESKTOP = new String[] { GL2, GL3bc, GL4bc, GL3, GL4 };
    
    /**
     * Order of maximum fixed function profiles
     *
     * <ul>
     *  <li> GL4bc
     *  <li> GL3bc
     *  <li> GL2
     *  <li> GLES1
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_MAX_FIXEDFUNC = new String[] { GL4bc, GL3bc, GL2, GLES1 };

    /**
     * Order of maximum programmable shader profiles
     *
     * <ul>
     *  <li> GL4bc
     *  <li> GL4
     *  <li> GL3bc
     *  <li> GL3
     *  <li> GL2
     *  <li> GLES2
     * </ul>
     *
     */
    public static final String[] GL_PROFILE_LIST_MAX_PROGSHADER   = new String[] { GL4bc, GL4, GL3bc, GL3, GL2, GLES2 };

    /** Returns a default GLProfile object, reflecting the best for the running platform.
     * It selects the first of the set {@link GLProfile#GL_PROFILE_LIST_ALL}
     * @throws GLException if no profile is available for the device.
     * @see #GL_PROFILE_LIST_ALL
     */
    public static GLProfile getDefault(AbstractGraphicsDevice device) {
        GLProfile glp = get(device, GL_DEFAULT);
        return glp;
    }

    /** Uses the default device 
     * @throws GLException if no profile is available for the default device.
     */
    public static GLProfile getDefault() {
        return getDefault(defaultDevice);
    }

    /**
     * Returns the highest profile.
     * It selects the first of the set: {@link GLProfile#GL_PROFILE_LIST_MAX}
     *
     * @throws GLException if no profile is available for the device.
     * @see #GL_PROFILE_LIST_MAX
     */
    public static GLProfile getMaximum(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL_PROFILE_LIST_MAX);
    }

    /** Uses the default device 
     * @throws GLException if no profile is available for the default device.
     * @see #GL_PROFILE_LIST_MAX
     */
    public static GLProfile getMaximum()
        throws GLException
    {
        return get(GL_PROFILE_LIST_MAX);
    }

    /**
     * Returns the lowest profile.
     * It selects the first of the set: {@link GLProfile#GL_PROFILE_LIST_MIN}
     *
     * @throws GLException if no desktop profile is available for the device.
     * @see #GL_PROFILE_LIST_MIN
     */
    public static GLProfile getMinimum(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL_PROFILE_LIST_MIN);
    }

    /** Uses the default device 
     * @throws GLException if no desktop profile is available for the default device.
     * @see #GL_PROFILE_LIST_MIN
     */
    public static GLProfile getMinimum()
        throws GLException
    {
        return get(GL_PROFILE_LIST_MIN);
    }


    /**
     * Returns the highest profile, implementing the fixed function pipeline.
     * It selects the first of the set: {@link GLProfile#GL_PROFILE_LIST_MAX_FIXEDFUNC}
     *
     * @throws GLException if no fixed function profile is available for the device.
     * @see #GL_PROFILE_LIST_MAX_FIXEDFUNC
     */
    public static GLProfile getMaxFixedFunc(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL_PROFILE_LIST_MAX_FIXEDFUNC);
    }

    /** Uses the default device 
     * @throws GLException if no fixed function profile is available for the default device.
     * @see #GL_PROFILE_LIST_MAX_FIXEDFUNC
     */
    public static GLProfile getMaxFixedFunc()
        throws GLException
    {
        return get(GL_PROFILE_LIST_MAX_FIXEDFUNC);
    }

    /**
     * Returns the highest profile, implementing the programmable shader pipeline.
     * It selects the first of the set: {@link GLProfile#GL_PROFILE_LIST_MAX_PROGSHADER}
     *
     * @throws GLException if no programmable profile is available for the device.
     * @see #GL_PROFILE_LIST_MAX_PROGSHADER
     */
    public static GLProfile getMaxProgrammable(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL_PROFILE_LIST_MAX_PROGSHADER);
    }

    /** Uses the default device 
     * @throws GLException if no programmable profile is available for the default device.
     * @see #GL_PROFILE_LIST_MAX_PROGSHADER
     */
    public static GLProfile getMaxProgrammable()
        throws GLException
    {
        return get(GL_PROFILE_LIST_MAX_PROGSHADER);
    }

    /** 
     * Returns the GL2ES1 profile implementation, hence compatible w/ GL2ES1.<br/>
     * It returns:
     * <pre>
     *   GLProfile.get(device, GLProfile.GL2ES1).getImpl());
     * </pre>
     *
     * @throws GLException if no GL2ES1 compatible profile is available for the default device.
     * @see #get(AbstractGraphicsDevice, String)
     * @see #getImpl()
     */
    public static GLProfile getGL2ES1(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL2ES1).getImpl();
    }

    /** 
     * Calls {@link #getGL2ES1(AbstractGraphicsDevice)} using the default device. 
     * @see #getGL2ES1(AbstractGraphicsDevice)
     */
    public static GLProfile getGL2ES1()
        throws GLException
    {
        return get(defaultDevice, GL2ES1).getImpl();
    }

    /** 
     * Returns the GL2ES2 profile implementation, hence compatible w/ GL2ES2.<br/>
     * It returns:
     * <pre>
     *   GLProfile.get(device, GLProfile.GL2ES2).getImpl());
     * </pre>
     *
     * @throws GLException if no GL2ES2 compatible profile is available for the default device.
     * @see #get(AbstractGraphicsDevice, String)
     * @see #getImpl()
     */
    public static GLProfile getGL2ES2(AbstractGraphicsDevice device)
        throws GLException
    {
        return get(device, GL2ES2).getImpl();
    }

    /** 
     * Calls {@link #getGL2ES2(AbstractGraphicsDevice)} using the default device. 
     * @see #getGL2ES2(AbstractGraphicsDevice)
     */
    public static GLProfile getGL2ES2()
        throws GLException
    {
        return get(defaultDevice, GL2ES2).getImpl();
    }

    /** Returns a GLProfile object.
     * verifies the given profile and chooses an appropriate implementation.
     * A generic value of <code>null</code> or <code>GL</code> will result in
     * the default profile.
     *
     * @param device a valid AbstractGraphicsDevice, or <code>null</null> for the default device.
     * @param profile a valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..), 
     *        or <code>[ null, GL ]</code> for the default profile.
     * @throws GLException if the requested profile is not available for the device.
     */
    public static GLProfile get(AbstractGraphicsDevice device, String profile)
        throws GLException
    {
        if(null==profile || profile.equals("GL")) {
            profile = GL_DEFAULT;
        }
        final HashMap<String /*GLProfile_name*/, GLProfile> glpMap = getProfileMap(device);
        final GLProfile glp = glpMap.get(profile);
        if(null == glp) {
            throw new GLException("Profile "+profile+" is not available on "+device+", but: "+glpMap.values());
        }
        return glp;
    }

    /** Uses the default device 
     * @param profile a valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..), 
     *        or <code>[ null, GL ]</code> for the default profile.
     * @throws GLException if the requested profile is not available for the default device.
     */
    public static GLProfile get(String profile)
        throws GLException
    {
        return get(defaultDevice, profile);
    }

    /**
     * Returns the first profile from the given list,
     * where an implementation is available.
     *
     * @param device a valid AbstractGraphicsDevice, or <code>null</null> for the default device.
     * @param profiles array of valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..) 
     * @throws GLException if the non of the requested profiles is available for the device.
     */
    public static GLProfile get(AbstractGraphicsDevice device, String[] profiles)
        throws GLException
    {
        HashMap<String /*GLProfile_name*/, GLProfile> map = getProfileMap(device);
        for(int i=0; i<profiles.length; i++) {
            String profile = profiles[i];
            GLProfile glProfile = map.get(profile);
            if(null!=glProfile) {
                return glProfile;
            }
        }
        throw new GLException("Profiles "+array2String(profiles)+" not available on device "+device);
    }

    /** Uses the default device 
     * @param profiles array of valid GLProfile name ({@link #GL4bc}, {@link #GL4}, {@link #GL2}, ..) 
     * @throws GLException if the non of the requested profiles is available for the default device.
     */
    public static GLProfile get(String[] profiles)
        throws GLException
    {
        return get(defaultDevice, profiles);
    }
    
    /** Indicates whether the native OpenGL ES1 profile is in use. 
     * This requires an EGL interface.
     */
    public static boolean usesNativeGLES1(String profileImpl) {
        return GLES1.equals(profileImpl);
    }

    /** Indicates whether the native OpenGL ES2 profile is in use. 
     * This requires an EGL or ES2 compatible interface.
     */
    public static boolean usesNativeGLES2(String profileImpl) {
        return GLES2.equals(profileImpl);
    }

    /** Indicates whether either of the native OpenGL ES profiles are in use. */
    public static boolean usesNativeGLES(String profileImpl) {
        return usesNativeGLES2(profileImpl) || usesNativeGLES1(profileImpl);
    }

    /** @return {@link javax.media.nativewindow.NativeWindowFactory#isAWTAvailable()} and
        JOGL's AWT part */
    public static boolean isAWTAvailable() { return isAWTAvailable; }

    public static String getGLTypeName(int type) {
        switch (type) {
        case GL.GL_UNSIGNED_BYTE:
            return "GL_UNSIGNED_BYTE";
        case GL.GL_BYTE:
            return "GL_BYTE";
        case GL.GL_UNSIGNED_SHORT:
            return "GL_UNSIGNED_SHORT";
        case GL.GL_SHORT:
            return "GL_SHORT";
        case GL.GL_FLOAT:
            return "GL_FLOAT";
        case GL.GL_FIXED:
            return "GL_FIXED";
        case javax.media.opengl.GL2ES2.GL_INT:
            return "GL_INT";
        case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
            return "GL_UNSIGNED_INT";
        case javax.media.opengl.GL2.GL_DOUBLE:
            return "GL_DOUBLE";
        case javax.media.opengl.GL2.GL_2_BYTES:
            return "GL_2_BYTES";
        case javax.media.opengl.GL2.GL_3_BYTES:
            return "GL_3_BYTES";
        case javax.media.opengl.GL2.GL_4_BYTES:
            return "GL_4_BYTES";
        }
        return null;
    }

    public static String getGLArrayName(int array) {
        switch(array) {
        case GLPointerFunc.GL_VERTEX_ARRAY:
            return "GL_VERTEX_ARRAY";
        case GLPointerFunc.GL_NORMAL_ARRAY:
            return "GL_NORMAL_ARRAY";
        case GLPointerFunc.GL_COLOR_ARRAY:
            return "GL_COLOR_ARRAY";
        case GLPointerFunc.GL_TEXTURE_COORD_ARRAY:
            return "GL_TEXTURE_COORD_ARRAY";
        }
        return null;
    }

    public final String getGLImplBaseClassName() {
        return getGLImplBaseClassName(getImplName());
    }

    /**
     * @param o GLProfile object to compare with
     * @return true if given Object is a GLProfile and
     *         if both, profile and profileImpl is equal with this.
     */
    public final boolean equals(Object o) {
        if(this==o) { return true; }
        if(o instanceof GLProfile) {
            GLProfile glp = (GLProfile)o;
            return getName().equals(glp.getName()) && getImplName().equals(glp.getImplName()) ;
        }
        return false;
    }

    public int hashCode() {
        int hash = 5;
        hash = 97 * hash + getImplName().hashCode();
        hash = 97 * hash + getName().hashCode();
        return hash;
    }
 
    /**
     * @param glp GLProfile to compare with
     * @throws GLException if given GLProfile and this aren't equal
     */
    public final void verifyEquality(GLProfile glp) throws GLException  {
        if(!this.equals(glp)) {
            throw new GLException("GLProfiles are not equal: "+this+" != "+glp);
        }
    }

    /** return this profiles name */
    public final String getName() {
        return profile;
    }

    /** return this profiles implementation, eg. GL2ES2 -> GL2, or GL3 -> GL3 */
    public final GLProfile getImpl() {
        return null != profileImpl ? profileImpl : this;
    }
    
    /** 
     * return this profiles implementation name, eg. GL2ES2 -> GL2, or GL3 -> GL3 
     */
    public final String getImplName() {
        return null != profileImpl ? profileImpl.getName() : getName();
    }

    /** Indicates whether this profile is capable of GL4bc. */
    public final boolean isGL4bc() {
        return GL4bc.equals(profile);
    }

    /** Indicates whether this profile is capable of GL4. */
    public final boolean isGL4() {
        return isGL4bc() || GL4.equals(profile);
    }

    /** Indicates whether this profile is capable of GL3bc. */
    public final boolean isGL3bc() {
        return isGL4bc() || GL3bc.equals(profile);
    }

    /** Indicates whether this profile is capable of GL3. */
    public final boolean isGL3() {
        return isGL4() || isGL3bc() || GL3.equals(profile);
    }

    /** Indicates whether this context is a GL2 context */
    public final boolean isGL2() {
        return isGL3bc() || GL2.equals(profile);
    }

    /** Indicates whether this profile is capable of GLES1. */
    public final boolean isGLES1() {
        return GLES1.equals(profile);
    }

    /** Indicates whether this profile is capable of GLES2. */
    public final boolean isGLES2() {
        return GLES2.equals(profile);
    }

    /** Indicates whether this profile is capable of GL2ES1. */
    public final boolean isGL2ES1() {
        return GL2ES1.equals(profile) || isGL2() || isGLES1() ;
    }

    /** Indicates whether this profile is capable os GL2ES2. */
    public final boolean isGL2ES2() {
        return GL2ES2.equals(profile) || isGL2() || isGL3() || isGLES2() ;
    }

    /** Indicates whether this profile is capable os GL2GL3. */
    public final boolean isGL2GL3() {
        return GL2GL3.equals(profile) || isGL2() || isGL3() ;
    }

    /** Indicates whether this profile supports GLSL. */
    public final boolean hasGLSL() {
        return isGL2ES2() ;
    }

    /** Indicates whether this profile uses the native OpenGL ES1 implementations. */
    public final boolean usesNativeGLES1() {
        return GLES1.equals(getImplName());
    }

    /** Indicates whether this profile uses the native OpenGL ES2 implementations. */
    public final boolean usesNativeGLES2() {
        return GLES2.equals(getImplName());
    }

    /** Indicates whether this profile uses either of the native OpenGL ES implementations. */
    public final boolean usesNativeGLES() {
        return usesNativeGLES2() || usesNativeGLES1();
    }

    /** 
     * General validation if type is a valid GL data type
     * for the current profile
     */
    public boolean isValidDataType(int type, boolean throwException) {
        switch(type) {
            case GL.GL_UNSIGNED_BYTE:
            case GL.GL_BYTE:
            case GL.GL_UNSIGNED_SHORT:
            case GL.GL_SHORT:
            case GL.GL_FLOAT:
            case GL.GL_FIXED:
                return true;
            case javax.media.opengl.GL2ES2.GL_INT:
            case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
                if( isGL2ES2() ) {
                    return true;
                }
            case javax.media.opengl.GL2.GL_DOUBLE:
                if( isGL3() ) {
                    return true;
                }
            case javax.media.opengl.GL2.GL_2_BYTES:
            case javax.media.opengl.GL2.GL_3_BYTES:
            case javax.media.opengl.GL2.GL_4_BYTES:
                if( isGL2() ) {
                    return true;
                }
        } 
        if(throwException) {
            throw new GLException("Illegal data type on profile "+this+": "+type);
        }
        return false;
    }
    
    public boolean isValidArrayDataType(int index, int comps, int type, 
                                        boolean isVertexAttribPointer, boolean throwException) {
        String arrayName = getGLArrayName(index);
        if(isGLES1()) {
            if(isVertexAttribPointer) {
                if(throwException) {
                    throw new GLException("Illegal array type for "+arrayName+" on profile GLES1: VertexAttribPointer");
                }
                return false;
            }
            switch(index) {
                case GLPointerFunc.GL_VERTEX_ARRAY:
                case GLPointerFunc.GL_TEXTURE_COORD_ARRAY:
                    switch(type) {
                        case GL.GL_BYTE:
                        case GL.GL_SHORT:
                        case GL.GL_FIXED:
                        case GL.GL_FLOAT:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal data type for "+arrayName+" on profile GLES1: "+type);
                            }
                            return false;
                    }
                    switch(comps) {
                        case 0:
                        case 2:
                        case 3:
                        case 4:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal component number for "+arrayName+" on profile GLES1: "+comps);
                            }
                            return false;
                    }
                    break;
                case GLPointerFunc.GL_NORMAL_ARRAY:
                    switch(type) {
                        case GL.GL_BYTE:
                        case GL.GL_SHORT:
                        case GL.GL_FIXED:
                        case GL.GL_FLOAT:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal data type for "+arrayName+" on profile GLES1: "+type);
                            }
                            return false;
                    }
                    switch(comps) {
                        case 0:
                        case 3:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal component number for "+arrayName+" on profile GLES1: "+comps);
                            }
                            return false;
                    }
                    break;
                case GLPointerFunc.GL_COLOR_ARRAY:
                    switch(type) {
                        case GL.GL_UNSIGNED_BYTE:
                        case GL.GL_FIXED:
                        case GL.GL_FLOAT:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal data type for "+arrayName+" on profile GLES1: "+type);
                            }
                            return false;
                    }
                    switch(comps) {
                        case 0:
                        case 4:
                            break;
                        default: 
                            if(throwException) {
                                throw new GLException("Illegal component number for "+arrayName+" on profile GLES1: "+comps);
                            }
                            return false;
                    }
                    break;
            }
        } else if(isGLES2()) {
            // simply ignore !isVertexAttribPointer case, since it is simulated anyway ..
            switch(type) {
                case GL.GL_UNSIGNED_BYTE:
                case GL.GL_BYTE:
                case GL.GL_UNSIGNED_SHORT:
                case GL.GL_SHORT:
                case GL.GL_FLOAT:
                case GL.GL_FIXED:
                    break;
                default: 
                    if(throwException) {
                        throw new GLException("Illegal data type for "+arrayName+" on profile GLES2: "+type);
                    }
                    return false;
            }
            /** unable to validate .. could be any valid type/component combination
            switch(comps) {
                case 0:
                case 1:
                case 2:
                case 3:
                case 4:
                    break;
                default: 
                    if(throwException) {
                        throw new GLException("Illegal component number for "+arrayName+" on profile GLES2: "+comps);
                    }
                    return false;
            } */
        } else if( isGL2ES2() ) {
            if(isVertexAttribPointer) {
                switch(type) {
                    case GL.GL_UNSIGNED_BYTE:
                    case GL.GL_BYTE:
                    case GL.GL_UNSIGNED_SHORT:
                    case GL.GL_SHORT:
                    case GL.GL_FLOAT:
                    case javax.media.opengl.GL2ES2.GL_INT:
                    case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
                    case javax.media.opengl.GL2.GL_DOUBLE:
                        break;
                    default: 
                        if(throwException) {
                            throw new GLException("Illegal data type for "+arrayName+" on profile GL2: "+type);
                        }
                        return false;
                }
                switch(comps) {
                    case 0:
                    case 1:
                    case 2:
                    case 3:
                    case 4:
                        break;
                    default: 
                        if(throwException) {
                            throw new GLException("Illegal component number for "+arrayName+" on profile GL2: "+comps);
                        }
                        return false;
                }
            } else {
                switch(index) {
                    case GLPointerFunc.GL_VERTEX_ARRAY:
                        switch(type) {
                            case GL.GL_SHORT:
                            case GL.GL_FLOAT:
                            case javax.media.opengl.GL2ES2.GL_INT:
                            case javax.media.opengl.GL2.GL_DOUBLE:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal data type for "+arrayName+" on profile GL2: "+type);
                                }
                                return false;
                        }
                        switch(comps) {
                            case 0:
                            case 2:
                            case 3:
                            case 4:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal component number for "+arrayName+" on profile GL2: "+comps);
                                }
                                return false;
                        }
                        break;
                    case GLPointerFunc.GL_NORMAL_ARRAY:
                        switch(type) {
                            case GL.GL_BYTE:
                            case GL.GL_SHORT:
                            case GL.GL_FLOAT:
                            case javax.media.opengl.GL2ES2.GL_INT:
                            case javax.media.opengl.GL2.GL_DOUBLE:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal data type for "+arrayName+" on profile GL2: "+type);
                                }
                                return false;
                        }
                        switch(comps) {
                            case 0:
                            case 3:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal component number for "+arrayName+" on profile GLES1: "+comps);
                                }
                                return false;
                        }
                        break;
                    case GLPointerFunc.GL_COLOR_ARRAY:
                        switch(type) {
                            case GL.GL_UNSIGNED_BYTE:
                            case GL.GL_BYTE:
                            case GL.GL_UNSIGNED_SHORT:
                            case GL.GL_SHORT:
                            case GL.GL_FLOAT:
                            case javax.media.opengl.GL2ES2.GL_INT:
                            case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
                            case javax.media.opengl.GL2.GL_DOUBLE:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal data type for "+arrayName+" on profile GL2: "+type);
                                }
                                return false;
                        }
                        switch(comps) {
                            case 0:
                            case 3:
                            case 4:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal component number for "+arrayName+" on profile GL2: "+comps);
                                }
                                return false;
                        }
                        break;
                    case GLPointerFunc.GL_TEXTURE_COORD_ARRAY:
                        switch(type) {
                            case GL.GL_SHORT:
                            case GL.GL_FLOAT:
                            case javax.media.opengl.GL2ES2.GL_INT:
                            case javax.media.opengl.GL2.GL_DOUBLE:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal data type for "+arrayName+" on profile GL2: "+type);
                                }
                                return false;
                        }
                        switch(comps) {
                            case 0:
                            case 1:
                            case 2:
                            case 3:
                            case 4:
                                break;
                            default: 
                                if(throwException) {
                                    throw new GLException("Illegal component number for "+arrayName+" on profile GL2: "+comps);
                                }
                                return false;
                        }
                        break;
                }
            }
        }
        return true;
    }

    public String toString() {
        return "GLProfile[" + getName() + "/" + getImplName() + "]";
    }

    private static /*final*/ boolean isAWTAvailable;

    private static /*final*/ boolean hasDesktopGLFactory;    
    private static /*final*/ boolean hasGL234Impl;
    private static /*final*/ boolean hasEGLFactory;
    private static /*final*/ boolean hasGLES2Impl;
    private static /*final*/ boolean hasGLES1Impl;

    private static /*final*/ GLDrawableFactoryImpl eglFactory;
    private static /*final*/ GLDrawableFactoryImpl desktopFactory;
    private static /*final*/ AbstractGraphicsDevice defaultDevice;
    private static /*final*/ AbstractGraphicsDevice defaultDesktopDevice;
    private static /*final*/ AbstractGraphicsDevice defaultEGLDevice;

    private static volatile boolean initialized = false;

    /**
     * Tries the profiles implementation and native libraries.
     */
    private static void initProfilesForDefaultDevices(boolean firstUIActionOnProcess) {
        NativeWindowFactory.initSingleton(firstUIActionOnProcess);

        if(DEBUG) {
            System.err.println("GLProfile.init firstUIActionOnProcess: "+ firstUIActionOnProcess
                               + ", thread: " + Thread.currentThread().getName());
            System.err.println(VersionUtil.getPlatformInfo());
            System.err.println(GlueGenVersion.getInstance());
            System.err.println(NativeWindowVersion.getInstance());
            System.err.println(JoglVersion.getInstance());
        }

        ClassLoader classloader = GLProfile.class.getClassLoader();

        isAWTAvailable = NativeWindowFactory.isAWTAvailable() &&
                         ReflectionUtil.isClassAvailable("javax.media.opengl.awt.GLCanvas", classloader) ; // JOGL

        // depends on hasDesktopGLFactory
        hasGL234Impl   = ReflectionUtil.isClassAvailable("jogamp.opengl.gl4.GL4bcImpl", classloader);
        
        // depends on hasEGLFactory
        hasGLES1Impl   = ReflectionUtil.isClassAvailable("jogamp.opengl.es1.GLES1Impl", classloader);
        hasGLES2Impl   = ReflectionUtil.isClassAvailable("jogamp.opengl.es2.GLES2Impl", classloader);
        
        //
        // Iteration of desktop GL availability detection
        // utilizing the detected GL version in the shared context.
        //
        // - Instantiate GLDrawableFactory incl its shared dummy drawable/context,
        //   which will register at GLContext ..
        //
        GLDrawableFactory.initSingleton();
        
        Throwable t=null;
        // if successfull it has a shared dummy drawable and context created
        try {
            desktopFactory = (GLDrawableFactoryImpl) GLDrawableFactory.getFactoryImpl(GL2);
            if(null != desktopFactory) {
                DesktopGLDynamicLookupHelper glLookupHelper = (DesktopGLDynamicLookupHelper) desktopFactory.getGLDynamicLookupHelper(0);
                if(null!=glLookupHelper) {
                    hasDesktopGLFactory = glLookupHelper.isLibComplete() && hasGL234Impl;
                }
            }
        } catch (LinkageError le) {
            t=le;
        } catch (RuntimeException re) {
            t=re;
        } catch (Throwable tt) {
            t=tt;
        }
        if(DEBUG) {
            if(null!=t) {
                t.printStackTrace();
            }
            if(null == desktopFactory) {
                System.err.println("Info: GLProfile.init - Desktop GLDrawable factory not available");
            }
        }

        if(null == desktopFactory) {
            hasDesktopGLFactory   = false;
            hasGL234Impl   = false;
        } else {
            defaultDesktopDevice = desktopFactory.getDefaultDevice();
            defaultDevice = defaultDesktopDevice;
        }

        if ( ReflectionUtil.isClassAvailable("jogamp.opengl.egl.EGLDrawableFactory", classloader) ) {
            t=null;
            try {
                eglFactory = (GLDrawableFactoryImpl) GLDrawableFactory.getFactoryImpl(GLES2);
                if(null != eglFactory) {
                    hasEGLFactory = true;
                    GLDynamicLookupHelper eglLookupHelper = eglFactory.getGLDynamicLookupHelper(2);
                    // update hasGLES1Impl, hasGLES2Impl based on EGL
                    if(null!=eglLookupHelper) {
                        hasGLES2Impl = eglLookupHelper.isLibComplete() && hasGLES2Impl;
                    }
                    eglLookupHelper = eglFactory.getGLDynamicLookupHelper(1);
                    if(null!=eglLookupHelper) {
                        hasGLES1Impl = eglLookupHelper.isLibComplete() && hasGLES1Impl;
                    }
                }
            } catch (LinkageError le) {
                t=le;
            } catch (SecurityException se) {
                t=se;
            } catch (NullPointerException npe) {
                t=npe;
            } catch (RuntimeException re) {
                t=re;
            }
            if(DEBUG) {
                if(null!=t) {
                    t.printStackTrace();
                }
                if(null == eglFactory) {
                    System.err.println("Info: GLProfile.init - EGL GLDrawable factory not available");
                }
            }
        }

        if(null == eglFactory) {
            hasGLES2Impl   = false;
            hasGLES1Impl   = false;
        } else {
            defaultEGLDevice = eglFactory.getDefaultDevice();
            if (null==defaultDevice) {
                defaultDevice = defaultEGLDevice;
            }
        }

        final boolean addedDesktopProfile = initProfilesForDevice(defaultDesktopDevice);
        final boolean addedEGLProfile = initProfilesForDevice(defaultEGLDevice);
        final boolean addedAnyProfile = addedDesktopProfile || addedEGLProfile ;

        if(DEBUG) {
            System.err.println("GLProfile.init addedAnyProfile(d/e) "+addedAnyProfile+" ("+addedDesktopProfile+"/"+addedEGLProfile+")");
            System.err.println("GLProfile.init isAWTAvailable       "+isAWTAvailable);
            System.err.println("GLProfile.init hasDesktopGLFactory  "+hasDesktopGLFactory);
            System.err.println("GLProfile.init hasGL234Impl         "+hasGL234Impl);
            System.err.println("GLProfile.init hasEGLFactory        "+hasEGLFactory);
            System.err.println("GLProfile.init hasGLES1Impl         "+hasGLES1Impl);
            System.err.println("GLProfile.init hasGLES2Impl         "+hasGLES2Impl);
            System.err.println("GLProfile.init defaultDesktopDevice "+defaultDesktopDevice);
            System.err.println("GLProfile.init defaultEGLDevice     "+defaultEGLDevice);
            System.err.println("GLProfile.init defaultDevice        "+defaultDevice);
            System.err.println("GLProfile.init: "+array2String(GL_PROFILE_LIST_ALL)+", "+ glAvailabilityToString());
        }
    }

    /**
     * @param device the device for which profiles shall be initialized
     * @return true if any profile for the device exists, otherwise false
     */
    private static synchronized boolean initProfilesForDevice(AbstractGraphicsDevice device) {
        if(null == device) {
            return false;
        }
        GLDrawableFactory factory = GLDrawableFactory.getFactoryImpl(device);
        factory.enterThreadCriticalZone();
        try {
            return initProfilesForDeviceCritical(device);
        } finally {
            factory.leaveThreadCriticalZone();
        }
    }
    private static synchronized boolean initProfilesForDeviceCritical(AbstractGraphicsDevice device) {
        boolean isSet = GLContext.getAvailableGLVersionsSet(device);

        if(DEBUG) {
            String msg = "Info: GLProfile.initProfilesForDevice: "+device+", isSet "+isSet;
            Throwable t = new Throwable(msg);
            t.printStackTrace();
            // System.err.println(msg);
        }
        if(isSet) {
            return GLProfile.isAvailable(device, GL_DEFAULT);
        }

        boolean addedDesktopProfile = false;
        boolean addedEGLProfile = false;
        boolean deviceIsDesktopCompatible = false;
        boolean deviceIsEGLCompatible = false;
        
        if( hasDesktopGLFactory && ( deviceIsDesktopCompatible = desktopFactory.getIsDeviceCompatible(device)) ) {
            // 1st pretend we have all Desktop and EGL profiles ..
            computeProfileMap(device, true /* desktopCtxUndef*/, true  /* esCtxUndef */);

            // Triggers eager initialization of share context in GLDrawableFactory for the device,
            // hence querying all available GLProfiles
            boolean desktopSharedCtxAvail = desktopFactory.getWasSharedContextCreated(device);
            if(!desktopSharedCtxAvail) {
                hasDesktopGLFactory = false;
            }
            if (DEBUG) {
                System.err.println("GLProfile.initProfilesForDevice: "+device+": desktop Shared Ctx "+desktopSharedCtxAvail);
            }
            if( hasDesktopGLFactory && null == GLContext.getAvailableGLVersion(device, 2, GLContext.CTX_PROFILE_COMPAT) ) {
                // nobody yet set the available desktop versions, see {@link GLContextImpl#makeCurrent},
                // so we have to add the usual suspect
                GLContext.mapAvailableGLVersion(device,
                                                2, GLContext.CTX_PROFILE_COMPAT,
                                                1, 5, GLContext.CTX_PROFILE_COMPAT|GLContext.CTX_OPTION_ANY);
            }
            addedDesktopProfile = computeProfileMap(device, false /* desktopCtxUndef*/, false /* esCtxUndef */);
        } else if( hasEGLFactory && ( hasGLES2Impl || hasGLES1Impl ) && 
                   ( deviceIsEGLCompatible = eglFactory.getIsDeviceCompatible(device)) ) {
            // 1st pretend we have all EGL profiles ..
            computeProfileMap(device, false /* desktopCtxUndef*/, true /* esCtxUndef */);

            // Triggers eager initialization of share context in GLDrawableFactory for the device,
            // hence querying all available GLProfiles
            boolean eglSharedCtxAvail = eglFactory.getWasSharedContextCreated(device);
            if(!eglSharedCtxAvail) {
                // Remark: On Windows there is a libEGL.dll delivered w/ Chrome 15.0.874.121m and Firefox 8.0.1
                // but it seems even EGL.eglInitialize(eglDisplay, null, null) 
                // fails in some scenarios (eg VirtualBox 4.1.6) w/ EGL error 0x3001 (EGL_NOT_INITIALIZED).
                hasEGLFactory = false;
                hasGLES2Impl = false;
                hasGLES1Impl = false;
            }
            if (DEBUG) {
                System.err.println("GLProfile.initProfilesForDevice: "+device+": egl Shared Ctx "+eglSharedCtxAvail);
            }
            if(hasGLES2Impl && null == GLContext.getAvailableGLVersion(device, 2, GLContext.CTX_PROFILE_ES) ) {
                // nobody yet set the available desktop versions, see {@link GLContextImpl#makeCurrent},
                // so we have to add the usual suspect
                GLContext.mapAvailableGLVersion(device,
                                                2, GLContext.CTX_PROFILE_ES,
                                                2, 0, GLContext.CTX_PROFILE_ES|GLContext.CTX_OPTION_ANY);
            }
            if(hasGLES1Impl && null == GLContext.getAvailableGLVersion(device, 1, GLContext.CTX_PROFILE_ES)) {
                // nobody yet set the available desktop versions, see {@link GLContextImpl#makeCurrent},
                // so we have to add the usual suspect
                GLContext.mapAvailableGLVersion(device,
                                                1, GLContext.CTX_PROFILE_ES,
                                                1, 0, GLContext.CTX_PROFILE_ES|GLContext.CTX_OPTION_ANY);
            }
            addedEGLProfile = computeProfileMap(device, false /* desktopCtxUndef*/, false /* esCtxUndef */);
        } else {
            setProfileMap(device, new HashMap<String /*GLProfile_name*/, GLProfile>()); // empty
            if(DEBUG) {
                System.err.println("GLProfile: device could not be initialized: "+device);
                System.err.println("GLProfile: compatible w/ desktop: "+deviceIsDesktopCompatible+
                                            ", egl "+deviceIsEGLCompatible);
                System.err.println("GLProfile: desktoplFactory      "+desktopFactory);
                System.err.println("GLProfile: eglFactory           "+eglFactory);
                System.err.println("GLProfile: hasGLES1Impl         "+hasGLES1Impl);
                System.err.println("GLProfile: hasGLES2Impl         "+hasGLES2Impl);
            }
        }

        if(!GLContext.getAvailableGLVersionsSet(device)) {
            GLContext.setAvailableGLVersionsSet(device);
        }

        if (DEBUG) {
            System.err.println("GLProfile.initProfilesForDevice: "+device.getConnection()+": added profile(s): desktop "+addedDesktopProfile+", egl "+addedEGLProfile);
            System.err.println("GLProfile.initProfilesForDevice: "+device.getConnection()+": "+glAvailabilityToString(device));
            if(addedDesktopProfile) {
                dumpGLInfo(desktopFactory, device);
                List<GLCapabilitiesImmutable> availCaps = desktopFactory.getAvailableCapabilities(device);
                for(int i=0; i<availCaps.size(); i++) {
                    System.err.println(availCaps.get(i));
                }
            } else if(addedEGLProfile) {
                dumpGLInfo(eglFactory, device);
                List<GLCapabilitiesImmutable> availCaps = eglFactory.getAvailableCapabilities(device);
                for(int i=0; i<availCaps.size(); i++) {
                    System.err.println(availCaps.get(i));
                }
            }
        }

        return addedDesktopProfile || addedEGLProfile;
    }

    private static void dumpGLInfo(GLDrawableFactoryImpl factory, AbstractGraphicsDevice device)  {
        GLContext ctx = factory.getOrCreateSharedContext(device);
        if(null != ctx) {
            System.err.println("GLProfile.dumpGLInfo: "+ctx);
            ctx.makeCurrent();
            try {
                System.err.println(JoglVersion.getGLInfo(ctx.getGL(), null));
            } finally {
                ctx.release();
            }
        } else {
            System.err.println("GLProfile.dumpGLInfo: shared context n/a");
        }
    }

    public static AbstractGraphicsDevice getDefaultDevice() {
        validateInitialization();
        return defaultDevice;
    }

    public static AbstractGraphicsDevice getDefaultDesktopDevice() {
        validateInitialization();
        return defaultDesktopDevice;
    }

    public static AbstractGraphicsDevice getDefaultEGLDevice() {
        validateInitialization();
        return defaultEGLDevice;
    }

    private static void validateInitialization() {
        if(!initialized) { // volatile: ok
            synchronized(GLProfile.class) {
                if(!initialized) {
                    initSingleton(false);
                }
            }
        }
    }

    private static String array2String(String[] list) {
        StringBuffer msg = new StringBuffer();
        msg.append("[");
        for (int i = 0; i < list.length; i++) {
            if (i > 0)
                msg.append(", ");
            msg.append(list[i]);
        }
        msg.append("]");
        return msg.toString();
    }

    private static void glAvailabilityToString(AbstractGraphicsDevice device, StringBuffer sb, int major, int profile) {
        String str = GLContext.getAvailableGLVersionAsString(device, major, profile);
        if(null==str) {
            throw new GLException("Internal Error");
        }
        sb.append("[");
        sb.append(str);
        sb.append("]");
    }

    private static boolean computeProfileMap(AbstractGraphicsDevice device, boolean desktopCtxUndef, boolean esCtxUndef) {
        if (DEBUG) {
            System.err.println("GLProfile.init map "+device.getConnection()+", desktopCtxUndef "+desktopCtxUndef+", esCtxUndef "+esCtxUndef);
        }
        GLProfile defaultGLProfile = null;
        HashMap<String, GLProfile> _mappedProfiles = new HashMap<String, GLProfile>(GL_PROFILE_LIST_ALL.length + 1 /* default */);
        for(int i=0; i<GL_PROFILE_LIST_ALL.length; i++) {
            String profile = GL_PROFILE_LIST_ALL[i];
            String profileImpl = computeProfileImpl(device, profile, desktopCtxUndef, esCtxUndef);
            if(null!=profileImpl) {
                final GLProfile glProfile;
                if(profile.equals(profileImpl)) {
                    glProfile = new GLProfile(profile, null);
                } else {
                    final GLProfile _mglp = _mappedProfiles.get(profileImpl);
                    if(null == _mglp) {
                        throw new InternalError("XXX0");
                    }
                    glProfile = new GLProfile(profile, _mglp);
                }
                _mappedProfiles.put(profile, glProfile);
                if (DEBUG) {
                    System.err.println("GLProfile.init map "+glProfile+" on devide "+device.getConnection());
                }
                if(null==defaultGLProfile) {
                    defaultGLProfile=glProfile;
                    if (DEBUG) {
                        System.err.println("GLProfile.init map default "+glProfile+" on device "+device.getConnection());
                    }
                }
            } else {
                if (DEBUG) {
                    System.err.println("GLProfile.init map *** no mapping for "+profile+" on device "+device.getConnection());
                }
            }
        }
        if(null!=defaultGLProfile) {
            _mappedProfiles.put(GL_DEFAULT, defaultGLProfile);
        }
        setProfileMap(device, _mappedProfiles);
        return _mappedProfiles.size() > 0;
    }

    /**
     * Returns the profile implementation
     */
    private static String computeProfileImpl(AbstractGraphicsDevice device, String profile, boolean desktopCtxUndef, boolean esCtxUndef) {
        // OSX GL3.. doesn't support GLSL<150, 
        // hence GL2ES2 and GL2GL3 need to be mapped on GL2 on OSX for GLSL compatibility.
        final boolean isOSX = Platform.OS_TYPE == Platform.OSType.MACOS;
        
        if (GL2ES1.equals(profile)) {
            if(hasGL234Impl) {
                if(GLContext.isGL4bcAvailable(device)) {
                    return GL4bc;
                } else if(GLContext.isGL3bcAvailable(device)) {
                    return GL3bc;
                } else if(desktopCtxUndef || GLContext.isGL2Available(device)) {
                    return GL2;
                }
            }
            if(hasGLES1Impl && ( esCtxUndef || GLContext.isGLES1Available(device))) {
                return GLES1;
            }
        } else if (GL2ES2.equals(profile)) {
            if(hasGL234Impl) {
                if(!isOSX && GLContext.isGL4bcAvailable(device)) {
                    return GL4bc;
                } else if(!isOSX && GLContext.isGL4Available(device)) {
                    return GL4;
                } else if(!isOSX && GLContext.isGL3bcAvailable(device)) {
                    return GL3bc;
                } else if(!isOSX && GLContext.isGL3Available(device)) {
                    return GL3;
                } else if(desktopCtxUndef || GLContext.isGL2Available(device)) {
                    return GL2;
                }
            }
            if(hasGLES2Impl && ( esCtxUndef || GLContext.isGLES2Available(device))) {
                return GLES2;
            }
        } else if(GL2GL3.equals(profile)) {
            if(hasGL234Impl) {
                if(!isOSX && GLContext.isGL4bcAvailable(device)) {
                    return GL4bc;
                } else if(!isOSX && GLContext.isGL4Available(device)) {
                    return GL4;
                } else if(!isOSX && GLContext.isGL3bcAvailable(device)) {
                    return GL3bc;
                } else if(!isOSX && GLContext.isGL3Available(device)) {
                    return GL3;
                } else if(desktopCtxUndef || GLContext.isGL2Available(device)) {
                    return GL2;
                }
            }
        } else if(GL4bc.equals(profile) && hasGL234Impl && ( desktopCtxUndef || GLContext.isGL4bcAvailable(device))) {
            return GL4bc;
        } else if(GL4.equals(profile) && hasGL234Impl && ( desktopCtxUndef || GLContext.isGL4Available(device))) {
            return GL4;
        } else if(GL3bc.equals(profile) && hasGL234Impl && ( desktopCtxUndef || GLContext.isGL3bcAvailable(device))) {
            return GL3bc;
        } else if(GL3.equals(profile) && hasGL234Impl && ( desktopCtxUndef || GLContext.isGL3Available(device))) {
            return GL3;
        } else if(GL2.equals(profile) && hasGL234Impl && ( desktopCtxUndef || GLContext.isGL2Available(device))) {
            return GL2;
        } else if(GLES2.equals(profile) && hasGLES2Impl && ( esCtxUndef || GLContext.isGLES2Available(device))) {
            return GLES2;
        } else if(GLES1.equals(profile) && hasGLES1Impl && ( esCtxUndef || GLContext.isGLES1Available(device))) {
            return GLES1;
        }
        return null;
    }

    private static String getGLImplBaseClassName(String profileImpl) {
        if ( GL4bc.equals(profileImpl) ||
             GL4.equals(profileImpl)   ||
             GL3bc.equals(profileImpl) ||
             GL3.equals(profileImpl)   ||
             GL2.equals(profileImpl) ) {
            return "jogamp.opengl.gl4.GL4bc";
        } else if(GLES1.equals(profileImpl) || GL2ES1.equals(profileImpl)) {
            return "jogamp.opengl.es1.GLES1";
        } else if(GLES2.equals(profileImpl) || GL2ES2.equals(profileImpl)) {
            return "jogamp.opengl.es2.GLES2";
        } else {
            throw new GLException("unsupported profile \"" + profileImpl + "\"");
        }
    }

    private static /*final*/ HashMap<String /*device_connection*/, HashMap<String /*GLProfile_name*/, GLProfile>> deviceConn2ProfileMap = 
                new HashMap<String /*device_connection*/, HashMap<String /*GLProfile_name*/, GLProfile>>();

    /**
     * This implementation support lazy initialization, while avoiding recursion/deadlocks.<br>
     * If no mapping 'device -> GLProfiles-Map' exists yet, it triggers<br>
     *  - create empty mapping device -> GLProfiles-Map <br>
     *  - initialization<br<
     *
     * @param device the key 'device -> GLProfiles-Map'
     * @return the GLProfile HashMap if exists, otherwise null 
     * @throws GLException if no profile for the given device is available.
     */
    private static HashMap<String /*GLProfile_name*/, GLProfile> getProfileMap(AbstractGraphicsDevice device) throws GLException {
        validateInitialization();
        if(null==device) {
            device = defaultDevice;
        }
        String deviceKey = device.getUniqueID();
        HashMap<String /*GLProfile_name*/, GLProfile> map = deviceConn2ProfileMap.get(deviceKey);
        if( null == map ) {
            if( !initProfilesForDevice(device) ) {
                throw new GLException("No Profile available for "+device);
            }
            if( null == deviceConn2ProfileMap.get(deviceKey) ) {
                throw new InternalError("initProfilesForDevice(..) didn't issue setProfileMap(..) on "+device);
            }
        }
        return map;
    }

    private static void setProfileMap(AbstractGraphicsDevice device, HashMap<String /*GLProfile_name*/, GLProfile> mappedProfiles) {
        validateInitialization();
        synchronized ( deviceConn2ProfileMap ) {
            deviceConn2ProfileMap.put(device.getUniqueID(), mappedProfiles);
        }
    }

    private GLProfile(String profile, GLProfile profileImpl) {
        this.profile = profile;
        this.profileImpl = profileImpl;
    }

    private GLProfile profileImpl = null;
    private String profile = null;
}