summaryrefslogtreecommitdiffstats
path: root/src/mesa/main/formatquery.c
blob: 29df95834b10304f8a873a59ec71b4cdbf148ce3 (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
/*
 * Copyright © 2012 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 */

#include "mtypes.h"
#include "context.h"
#include "glformats.h"
#include "macros.h"
#include "enums.h"
#include "fbobject.h"
#include "formatquery.h"
#include "teximage.h"
#include "texparam.h"
#include "texobj.h"
#include "get.h"
#include "genmipmap.h"
#include "shaderimage.h"
#include "texcompress.h"
#include "textureview.h"

static bool
_is_renderable(struct gl_context *ctx, GLenum internalformat)
{
   /*  Section 4.4.4 on page 212 of the  GLES 3.0.4 spec says:
    *
    *     "An internal format is color-renderable if it is one of the
    *     formats from table 3.13 noted as color-renderable or if it
    *     is unsized format RGBA or RGB."
    *
    * Therefore, we must accept GL_RGB and GL_RGBA here.
    */
   if (internalformat != GL_RGB && internalformat != GL_RGBA &&
       _mesa_base_fbo_format(ctx, internalformat) == 0)
      return false;

   return true;
}

/* Handles the cases where either ARB_internalformat_query or
 * ARB_internalformat_query2 have to return an error.
 */
static bool
_legal_parameters(struct gl_context *ctx, GLenum target, GLenum internalformat,
                  GLenum pname, GLsizei bufSize, GLint *params)

{
   bool query2 = _mesa_has_ARB_internalformat_query2(ctx);

   /* The ARB_internalformat_query2 spec says:
    *
    *    "The INVALID_ENUM error is generated if the <target> parameter to
    *    GetInternalformati*v is not one of the targets listed in Table 6.xx.
    */
   switch(target){
   case GL_TEXTURE_1D:
   case GL_TEXTURE_1D_ARRAY:
   case GL_TEXTURE_2D:
   case GL_TEXTURE_2D_ARRAY:
   case GL_TEXTURE_3D:
   case GL_TEXTURE_CUBE_MAP:
   case GL_TEXTURE_CUBE_MAP_ARRAY:
   case GL_TEXTURE_RECTANGLE:
   case GL_TEXTURE_BUFFER:
      if (!query2) {
         /* The ARB_internalformat_query spec says:
          *
          *     "If the <target> parameter to GetInternalformativ is not one of
          *      TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY
          *      or RENDERBUFFER then an INVALID_ENUM error is generated.
          */
         _mesa_error(ctx, GL_INVALID_ENUM,
                     "glGetInternalformativ(target=%s)",
                     _mesa_enum_to_string(target));

         return false;
      }
      break;

   case GL_RENDERBUFFER:
      break;

   case GL_TEXTURE_2D_MULTISAMPLE:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
      /* The non-existence of ARB_texture_multisample is treated in
       * ARB_internalformat_query implementation like an error.
       */
      if (!query2 &&
          !(_mesa_has_ARB_texture_multisample(ctx) || _mesa_is_gles31(ctx))) {
         _mesa_error(ctx, GL_INVALID_ENUM,
                     "glGetInternalformativ(target=%s)",
                     _mesa_enum_to_string(target));

         return false;
      }
      break;

   default:
      _mesa_error(ctx, GL_INVALID_ENUM,
                  "glGetInternalformativ(target=%s)",
                  _mesa_enum_to_string(target));
      return false;
   }


   /* The ARB_internalformat_query2 spec says:
    *
    *     "The INVALID_ENUM error is generated if the <pname> parameter is
    *     not one of the listed possibilities.
    */
   switch(pname){
   case GL_SAMPLES:
   case GL_NUM_SAMPLE_COUNTS:
      break;

   case GL_SRGB_DECODE_ARB:
      /* The ARB_internalformat_query2 spec says:
       *
       *     "If ARB_texture_sRGB_decode or EXT_texture_sRGB_decode or
       *     equivalent functionality is not supported, queries for the
       *     SRGB_DECODE_ARB <pname> set the INVALID_ENUM error.
       */
      if (!_mesa_has_EXT_texture_sRGB_decode(ctx)) {
         _mesa_error(ctx, GL_INVALID_ENUM,
                     "glGetInternalformativ(pname=%s)",
                     _mesa_enum_to_string(pname));
         return false;
      }
      /* fallthrough */
   case GL_INTERNALFORMAT_SUPPORTED:
   case GL_INTERNALFORMAT_PREFERRED:
   case GL_INTERNALFORMAT_RED_SIZE:
   case GL_INTERNALFORMAT_GREEN_SIZE:
   case GL_INTERNALFORMAT_BLUE_SIZE:
   case GL_INTERNALFORMAT_ALPHA_SIZE:
   case GL_INTERNALFORMAT_DEPTH_SIZE:
   case GL_INTERNALFORMAT_STENCIL_SIZE:
   case GL_INTERNALFORMAT_SHARED_SIZE:
   case GL_INTERNALFORMAT_RED_TYPE:
   case GL_INTERNALFORMAT_GREEN_TYPE:
   case GL_INTERNALFORMAT_BLUE_TYPE:
   case GL_INTERNALFORMAT_ALPHA_TYPE:
   case GL_INTERNALFORMAT_DEPTH_TYPE:
   case GL_INTERNALFORMAT_STENCIL_TYPE:
   case GL_MAX_WIDTH:
   case GL_MAX_HEIGHT:
   case GL_MAX_DEPTH:
   case GL_MAX_LAYERS:
   case GL_MAX_COMBINED_DIMENSIONS:
   case GL_COLOR_COMPONENTS:
   case GL_DEPTH_COMPONENTS:
   case GL_STENCIL_COMPONENTS:
   case GL_COLOR_RENDERABLE:
   case GL_DEPTH_RENDERABLE:
   case GL_STENCIL_RENDERABLE:
   case GL_FRAMEBUFFER_RENDERABLE:
   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
   case GL_FRAMEBUFFER_BLEND:
   case GL_READ_PIXELS:
   case GL_READ_PIXELS_FORMAT:
   case GL_READ_PIXELS_TYPE:
   case GL_TEXTURE_IMAGE_FORMAT:
   case GL_TEXTURE_IMAGE_TYPE:
   case GL_GET_TEXTURE_IMAGE_FORMAT:
   case GL_GET_TEXTURE_IMAGE_TYPE:
   case GL_MIPMAP:
   case GL_MANUAL_GENERATE_MIPMAP:
   case GL_AUTO_GENERATE_MIPMAP:
   case GL_COLOR_ENCODING:
   case GL_SRGB_READ:
   case GL_SRGB_WRITE:
   case GL_FILTER:
   case GL_VERTEX_TEXTURE:
   case GL_TESS_CONTROL_TEXTURE:
   case GL_TESS_EVALUATION_TEXTURE:
   case GL_GEOMETRY_TEXTURE:
   case GL_FRAGMENT_TEXTURE:
   case GL_COMPUTE_TEXTURE:
   case GL_TEXTURE_SHADOW:
   case GL_TEXTURE_GATHER:
   case GL_TEXTURE_GATHER_SHADOW:
   case GL_SHADER_IMAGE_LOAD:
   case GL_SHADER_IMAGE_STORE:
   case GL_SHADER_IMAGE_ATOMIC:
   case GL_IMAGE_TEXEL_SIZE:
   case GL_IMAGE_COMPATIBILITY_CLASS:
   case GL_IMAGE_PIXEL_FORMAT:
   case GL_IMAGE_PIXEL_TYPE:
   case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
   case GL_TEXTURE_COMPRESSED:
   case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
   case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
   case GL_TEXTURE_COMPRESSED_BLOCK_SIZE:
   case GL_CLEAR_BUFFER:
   case GL_TEXTURE_VIEW:
   case GL_VIEW_COMPATIBILITY_CLASS:
      /* The ARB_internalformat_query spec says:
       *
       *     "If the <pname> parameter to GetInternalformativ is not SAMPLES
       *     or NUM_SAMPLE_COUNTS, then an INVALID_ENUM error is generated."
       */
      if (!query2) {
         _mesa_error(ctx, GL_INVALID_ENUM,
                     "glGetInternalformativ(pname=%s)",
                     _mesa_enum_to_string(pname));

         return false;
      }
      break;

   default:
      _mesa_error(ctx, GL_INVALID_ENUM,
                  "glGetInternalformativ(pname=%s)",
                  _mesa_enum_to_string(pname));
      return false;
   }

   /* The ARB_internalformat_query spec says:
    *
    *     "If the <bufSize> parameter to GetInternalformativ is negative, then
    *     an INVALID_VALUE error is generated."
    *
    * Nothing is said in ARB_internalformat_query2 but we assume the same.
    */
   if (bufSize < 0) {
      _mesa_error(ctx, GL_INVALID_VALUE,
                  "glGetInternalformativ(target=%s)",
                  _mesa_enum_to_string(target));
      return false;
   }

   /* The ARB_internalformat_query spec says:
    *
    *     "If the <internalformat> parameter to GetInternalformativ is not
    *     color-, depth- or stencil-renderable, then an INVALID_ENUM error is
    *     generated."
    */
   if (!query2 && !_is_renderable(ctx, internalformat)) {
      _mesa_error(ctx, GL_INVALID_ENUM,
                  "glGetInternalformativ(internalformat=%s)",
                  _mesa_enum_to_string(internalformat));
      return false;
   }

   return true;
}

/* Sets the appropriate "unsupported" response as defined by the
 * ARB_internalformat_query2 spec for each each <pname>.
 */
static void
_set_default_response(GLenum pname, GLint buffer[16])
{
   /* The ARB_internalformat_query2 defines which is the reponse best
    * representing "not supported" or "not applicable" for each <pname>.
    *
    *     " In general:
    *          - size- or count-based queries will return zero,
    *          - support-, format- or type-based queries will return NONE,
    *          - boolean-based queries will return FALSE, and
    *          - list-based queries return no entries."
    */
   switch(pname) {
   case GL_SAMPLES:
      break;

   case GL_MAX_COMBINED_DIMENSIONS:
      /* This value can be a 64-bit value. As the default is the 32-bit query,
       * we pack 2 32-bit integers. So we need to clean both */
      buffer[0] = 0;
      buffer[1] = 0;
      break;

   case GL_NUM_SAMPLE_COUNTS:
   case GL_INTERNALFORMAT_RED_SIZE:
   case GL_INTERNALFORMAT_GREEN_SIZE:
   case GL_INTERNALFORMAT_BLUE_SIZE:
   case GL_INTERNALFORMAT_ALPHA_SIZE:
   case GL_INTERNALFORMAT_DEPTH_SIZE:
   case GL_INTERNALFORMAT_STENCIL_SIZE:
   case GL_INTERNALFORMAT_SHARED_SIZE:
   case GL_MAX_WIDTH:
   case GL_MAX_HEIGHT:
   case GL_MAX_DEPTH:
   case GL_MAX_LAYERS:
   case GL_IMAGE_TEXEL_SIZE:
   case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
   case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
   case GL_TEXTURE_COMPRESSED_BLOCK_SIZE:
      buffer[0] = 0;
      break;

   case GL_INTERNALFORMAT_PREFERRED:
   case GL_INTERNALFORMAT_RED_TYPE:
   case GL_INTERNALFORMAT_GREEN_TYPE:
   case GL_INTERNALFORMAT_BLUE_TYPE:
   case GL_INTERNALFORMAT_ALPHA_TYPE:
   case GL_INTERNALFORMAT_DEPTH_TYPE:
   case GL_INTERNALFORMAT_STENCIL_TYPE:
   case GL_FRAMEBUFFER_RENDERABLE:
   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
   case GL_FRAMEBUFFER_BLEND:
   case GL_READ_PIXELS:
   case GL_READ_PIXELS_FORMAT:
   case GL_READ_PIXELS_TYPE:
   case GL_TEXTURE_IMAGE_FORMAT:
   case GL_TEXTURE_IMAGE_TYPE:
   case GL_GET_TEXTURE_IMAGE_FORMAT:
   case GL_GET_TEXTURE_IMAGE_TYPE:
   case GL_MANUAL_GENERATE_MIPMAP:
   case GL_AUTO_GENERATE_MIPMAP:
   case GL_COLOR_ENCODING:
   case GL_SRGB_READ:
   case GL_SRGB_WRITE:
   case GL_SRGB_DECODE_ARB:
   case GL_FILTER:
   case GL_VERTEX_TEXTURE:
   case GL_TESS_CONTROL_TEXTURE:
   case GL_TESS_EVALUATION_TEXTURE:
   case GL_GEOMETRY_TEXTURE:
   case GL_FRAGMENT_TEXTURE:
   case GL_COMPUTE_TEXTURE:
   case GL_TEXTURE_SHADOW:
   case GL_TEXTURE_GATHER:
   case GL_TEXTURE_GATHER_SHADOW:
   case GL_SHADER_IMAGE_LOAD:
   case GL_SHADER_IMAGE_STORE:
   case GL_SHADER_IMAGE_ATOMIC:
   case GL_IMAGE_COMPATIBILITY_CLASS:
   case GL_IMAGE_PIXEL_FORMAT:
   case GL_IMAGE_PIXEL_TYPE:
   case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
   case GL_CLEAR_BUFFER:
   case GL_TEXTURE_VIEW:
   case GL_VIEW_COMPATIBILITY_CLASS:
      buffer[0] = GL_NONE;
      break;

   case GL_INTERNALFORMAT_SUPPORTED:
   case GL_COLOR_COMPONENTS:
   case GL_DEPTH_COMPONENTS:
   case GL_STENCIL_COMPONENTS:
   case GL_COLOR_RENDERABLE:
   case GL_DEPTH_RENDERABLE:
   case GL_STENCIL_RENDERABLE:
   case GL_MIPMAP:
   case GL_TEXTURE_COMPRESSED:
      buffer[0] = GL_FALSE;
      break;

   default:
      unreachable("invalid 'pname'");
   }
}

static bool
_is_target_supported(struct gl_context *ctx, GLenum target)
{
   /* The ARB_internalformat_query2 spec says:
    *
    *     "if a particular type of <target> is not supported by the
    *     implementation the "unsupported" answer should be given.
    *     This is not an error."
    *
    * For OpenGL ES, queries can only be used with GL_RENDERBUFFER or MS.
    */
   switch(target){
   case GL_TEXTURE_1D:
   case GL_TEXTURE_2D:
   case GL_TEXTURE_3D:
      if (!_mesa_is_desktop_gl(ctx))
         return false;
      break;

   case GL_TEXTURE_1D_ARRAY:
      if (!_mesa_has_EXT_texture_array(ctx))
         return false;
      break;

   case GL_TEXTURE_2D_ARRAY:
      if (!_mesa_has_EXT_texture_array(ctx))
         return false;
      break;

   case GL_TEXTURE_CUBE_MAP:
      if (ctx->API != API_OPENGL_CORE && !_mesa_has_ARB_texture_cube_map(ctx))
         return false;
      break;

   case GL_TEXTURE_CUBE_MAP_ARRAY:
      if (!_mesa_has_ARB_texture_cube_map_array(ctx))
         return false;
      break;

   case GL_TEXTURE_RECTANGLE:
      if (!_mesa_has_ARB_texture_rectangle(ctx))
          return false;
      break;

   case GL_TEXTURE_BUFFER:
      if (!_mesa_has_ARB_texture_buffer_object(ctx))
         return false;
      break;

   case GL_RENDERBUFFER:
      if (!(_mesa_has_ARB_framebuffer_object(ctx) ||
            _mesa_is_gles3(ctx)))
         return false;
      break;

   case GL_TEXTURE_2D_MULTISAMPLE:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
      if (!(_mesa_has_ARB_texture_multisample(ctx) ||
            _mesa_is_gles31(ctx)))
         return false;
      break;

   default:
      unreachable("invalid target");
   }

   return true;
}

static bool
_is_resource_supported(struct gl_context *ctx, GLenum target,
                       GLenum internalformat, GLenum pname)
{
   /* From the ARB_internalformat_query2 spec:
    *
    * In the following descriptions, the term /resource/ is used to generically
    * refer to an object of the appropriate type that has been created with
    * <internalformat> and <target>.  If the particular <target> and
    * <internalformat> combination do not make sense, ... the "unsupported"
    * answer should be given. This is not an error.
    */

   /* In the ARB_internalformat_query2 spec wording, some <pnames> do not care
    * about the /resource/ being supported or not, we return 'true' for those.
    */
   switch (pname) {
   case GL_INTERNALFORMAT_SUPPORTED:
   case GL_INTERNALFORMAT_PREFERRED:
   case GL_COLOR_COMPONENTS:
   case GL_DEPTH_COMPONENTS:
   case GL_STENCIL_COMPONENTS:
   case GL_COLOR_RENDERABLE:
   case GL_DEPTH_RENDERABLE:
   case GL_STENCIL_RENDERABLE:
      return true;
   default:
      break;
   }

   switch(target){
   case GL_TEXTURE_1D:
   case GL_TEXTURE_1D_ARRAY:
   case GL_TEXTURE_2D:
   case GL_TEXTURE_2D_ARRAY:
   case GL_TEXTURE_3D:
   case GL_TEXTURE_CUBE_MAP:
   case GL_TEXTURE_CUBE_MAP_ARRAY:
   case GL_TEXTURE_RECTANGLE:
      /* Based on what Mesa does for glTexImage1D/2D/3D and
       * glCompressedTexImage1D/2D/3D functions.
       */
      if (_mesa_base_tex_format(ctx, internalformat) < 0)
         return false;

      /* additional checks for depth textures */
      if (!_mesa_legal_texture_base_format_for_target(ctx, target, internalformat))
         return false;

      /* additional checks for compressed textures */
      if (_mesa_is_compressed_format(ctx, internalformat) &&
          (!_mesa_target_can_be_compressed(ctx, target, internalformat, NULL) ||
           _mesa_format_no_online_compression(ctx, internalformat)))
         return false;

      break;
   case GL_TEXTURE_2D_MULTISAMPLE:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
      /* Based on what Mesa does for glTexImage2D/3DMultisample,
       * glTexStorage2D/3DMultisample and
       * glTextureStorage2D/3DMultisample functions.
       */
      if (!_mesa_is_renderable_texture_format(ctx, internalformat))
         return false;

      break;
   case GL_TEXTURE_BUFFER:
      /* Based on what Mesa does for the glTexBuffer function. */
      if (_mesa_validate_texbuffer_format(ctx, internalformat) ==
          MESA_FORMAT_NONE)
         return false;

      break;
   case GL_RENDERBUFFER:
      /* Based on what Mesa does for glRenderbufferStorage(Multisample) and
       * glNamedRenderbufferStorage functions.
       */
      if (!_mesa_base_fbo_format(ctx, internalformat))
         return false;

      break;
   default:
      unreachable("bad target");
   }

   return true;
}

static bool
_is_internalformat_supported(struct gl_context *ctx, GLenum target,
                             GLenum internalformat)
{
   /* From the ARB_internalformat_query2 specification:
    *
    *     "- INTERNALFORMAT_SUPPORTED: If <internalformat> is an internal format
    *     that is supported by the implementation in at least some subset of
    *     possible operations, TRUE is written to <params>.  If <internalformat>
    *     if not a valid token for any internal format usage, FALSE is returned.
    *
    *     <internalformats> that must be supported (in GL 4.2 or later) include
    *      the following:
    *         - "sized internal formats" from Table 3.12, 3.13, and 3.15,
    *         - any specific "compressed internal format" from Table 3.14,
    *         - any "image unit format" from Table 3.21.
    *         - any generic "compressed internal format" from Table 3.14, if the
    *         implementation accepts it for any texture specification commands, and
    *         - unsized or base internal format, if the implementation accepts
    *         it for texture or image specification.
    */
   GLint buffer[1];

   /* At this point an internalformat is valid if it is valid as a texture or
    * as a renderbuffer format. The checks are different because those methods
    * return different values when passing non supported internalformats */
   if (_mesa_base_tex_format(ctx, internalformat) < 0 &&
       _mesa_base_fbo_format(ctx, internalformat) == 0)
      return false;

   /* Let the driver have the final word */
   ctx->Driver.QueryInternalFormat(ctx, target, internalformat,
                                   GL_INTERNALFORMAT_SUPPORTED, buffer);

   return (buffer[0] == GL_TRUE);
}

static bool
_legal_target_for_framebuffer_texture_layer(struct gl_context *ctx,
                                            GLenum target)
{
   switch (target) {
   case GL_TEXTURE_3D:
   case GL_TEXTURE_1D_ARRAY:
   case GL_TEXTURE_2D_ARRAY:
   case GL_TEXTURE_CUBE_MAP_ARRAY:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
   case GL_TEXTURE_CUBE_MAP:
      return true;
   default:
      return false;
   }
}

static GLenum
_mesa_generic_type_for_internal_format(GLenum internalFormat)
{
   if (_mesa_is_enum_format_unsigned_int(internalFormat))
      return GL_UNSIGNED_BYTE;
   else if (_mesa_is_enum_format_signed_int(internalFormat))
      return GL_BYTE;
   else
      return GL_FLOAT;
}

/* default implementation of QueryInternalFormat driverfunc, for
 * drivers not implementing ARB_internalformat_query2.
 */
void
_mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
                                    GLenum internalFormat, GLenum pname,
                                    GLint *params)
{
   (void) target;

   switch (pname) {
   case GL_SAMPLES:
   case GL_NUM_SAMPLE_COUNTS:
      params[0] = 1;
      break;

   case GL_INTERNALFORMAT_SUPPORTED:
      params[0] = GL_TRUE;
      break;

   case GL_INTERNALFORMAT_PREFERRED:
      params[0] = internalFormat;
      break;

   case GL_READ_PIXELS_FORMAT: {
      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
      switch (base_format) {
      case GL_STENCIL_INDEX:
      case GL_DEPTH_COMPONENT:
      case GL_DEPTH_STENCIL:
      case GL_RED:
      case GL_RGB:
      case GL_BGR:
      case GL_RGBA:
      case GL_BGRA:
         params[0] = base_format;
         break;
      default:
         params[0] = GL_NONE;
         break;
      }
      break;
   }

   case GL_READ_PIXELS_TYPE:
   case GL_TEXTURE_IMAGE_TYPE:
   case GL_GET_TEXTURE_IMAGE_TYPE: {
      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
      if (base_format > 0)
         params[0] = _mesa_generic_type_for_internal_format(internalFormat);
      else
         params[0] = GL_NONE;
      break;
   }

   case GL_TEXTURE_IMAGE_FORMAT:
   case GL_GET_TEXTURE_IMAGE_FORMAT: {
      GLenum format = GL_NONE;
      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
      if (base_format > 0) {
         if (_mesa_is_enum_format_integer(internalFormat))
           format = _mesa_base_format_to_integer_format(base_format);
         else
           format = base_format;
      }

      params[0] = format;
      break;
   }

   case GL_MANUAL_GENERATE_MIPMAP:
   case GL_AUTO_GENERATE_MIPMAP:
   case GL_SRGB_READ:
   case GL_SRGB_WRITE:
   case GL_SRGB_DECODE_ARB:
   case GL_VERTEX_TEXTURE:
   case GL_TESS_CONTROL_TEXTURE:
   case GL_TESS_EVALUATION_TEXTURE:
   case GL_GEOMETRY_TEXTURE:
   case GL_FRAGMENT_TEXTURE:
   case GL_COMPUTE_TEXTURE:
   case GL_SHADER_IMAGE_LOAD:
   case GL_SHADER_IMAGE_STORE:
   case GL_SHADER_IMAGE_ATOMIC:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
   case GL_CLEAR_BUFFER:
   case GL_TEXTURE_VIEW:
   case GL_TEXTURE_SHADOW:
   case GL_TEXTURE_GATHER:
   case GL_TEXTURE_GATHER_SHADOW:
   case GL_FRAMEBUFFER_RENDERABLE:
   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
   case GL_FRAMEBUFFER_BLEND:
   case GL_FILTER:
      params[0] = GL_FULL_SUPPORT;
      break;

   default:
      _set_default_response(pname, params);
      break;
   }
}

/*
 * For MAX_WIDTH/MAX_HEIGHT/MAX_DEPTH it returns the equivalent GetInteger
 * pname for a Getinternalformat pname/target combination. target/pname
 * combinations that would return 0 due dimension number or unsupported status
 * should be already filtered out
 *
 * Note that this means that the returned value would be independent of the
 * internalformat. This possibility is already mentioned at the Issue 7 of the
 * arb_internalformat_query2 spec.
 */
static GLenum
equivalentSizePname(GLenum target,
                    GLenum pname)
{
   switch (target) {
   case GL_TEXTURE_1D:
   case GL_TEXTURE_2D:
   case GL_TEXTURE_2D_MULTISAMPLE:
      return GL_MAX_TEXTURE_SIZE;
   case GL_TEXTURE_3D:
      return GL_MAX_3D_TEXTURE_SIZE;
   case GL_TEXTURE_CUBE_MAP:
      return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
   case GL_TEXTURE_RECTANGLE:
      return GL_MAX_RECTANGLE_TEXTURE_SIZE;
   case GL_RENDERBUFFER:
      return GL_MAX_RENDERBUFFER_SIZE;
   case GL_TEXTURE_1D_ARRAY:
      if (pname == GL_MAX_HEIGHT)
         return GL_MAX_ARRAY_TEXTURE_LAYERS;
      else
         return GL_MAX_TEXTURE_SIZE;
   case GL_TEXTURE_2D_ARRAY:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
      if (pname == GL_MAX_DEPTH)
         return GL_MAX_ARRAY_TEXTURE_LAYERS;
      else
         return GL_MAX_TEXTURE_SIZE;
   case GL_TEXTURE_CUBE_MAP_ARRAY:
      if (pname == GL_MAX_DEPTH)
         return GL_MAX_ARRAY_TEXTURE_LAYERS;
      else
         return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
   case GL_TEXTURE_BUFFER:
      return GL_MAX_TEXTURE_BUFFER_SIZE;
   default:
      return 0;
   }
}

/*
 * Returns the dimensions associated to a target. GL_TEXTURE_BUFFER and
 * GL_RENDERBUFFER have associated a dimension, but they are not textures
 * per-se, so we can't just call _mesa_get_texture_dimension directly.
 */
static GLint
get_target_dimensions(GLenum target)
{
   switch(target) {
   case GL_TEXTURE_BUFFER:
      return 1;
   case GL_RENDERBUFFER:
      return 2;
   default:
      return _mesa_get_texture_dimensions(target);
   }
}

/*
 * Returns the minimum amount of dimensions associated to a pname. So for
 * example, if querying GL_MAX_HEIGHT, it is assumed that your target would
 * have as minimum 2 dimensions.
 *
 * Useful to handle sentences like this from query2 spec:
 *
 * "MAX_HEIGHT:
 *  <skip>
 *  If the resource does not have at least two dimensions
 *  <skip>."
 */
static GLint
get_min_dimensions(GLenum pname)
{
   switch(pname) {
   case GL_MAX_WIDTH:
      return 1;
   case GL_MAX_HEIGHT:
      return 2;
   case GL_MAX_DEPTH:
      return 3;
   default:
      return 0;
   }
}

/*
 * Similar to teximage.c:check_multisample_target, but independent of the
 * dimensions.
 */
static bool
is_multisample_target(GLenum target)
{
   switch(target) {
   case GL_TEXTURE_2D_MULTISAMPLE:
   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
      return true;
   default:
      return false;
   }

}

void GLAPIENTRY
_mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
                          GLsizei bufSize, GLint *params)
{
   GLint buffer[16];
   GET_CURRENT_CONTEXT(ctx);

   ASSERT_OUTSIDE_BEGIN_END(ctx);

   /* ARB_internalformat_query is also mandatory for ARB_internalformat_query2 */
   if (!(_mesa_has_ARB_internalformat_query(ctx) ||
         _mesa_is_gles3(ctx))) {
      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformativ");
      return;
   }

   assert(ctx->Driver.QueryInternalFormat != NULL);

   if (!_legal_parameters(ctx, target, internalformat, pname, bufSize, params))
      return;

   /* initialize the contents of the temporary buffer */
   memcpy(buffer, params, MIN2(bufSize, 16) * sizeof(GLint));

   /* Use the 'unsupported' response defined by the spec for every pname
    * as the default answer.
    */
   _set_default_response(pname, buffer);

   if (!_is_target_supported(ctx, target) ||
       !_is_internalformat_supported(ctx, target, internalformat) ||
       !_is_resource_supported(ctx, target, internalformat, pname))
      goto end;

   switch (pname) {
   case GL_SAMPLES:
      /* fall-through */
   case GL_NUM_SAMPLE_COUNTS:
      /* The ARB_internalformat_query2 sets the response as 'unsupported' for
       * SAMPLES and NUM_SAMPLE_COUNTS:
       *
       *     "If <internalformat> is not color-renderable, depth-renderable, or
       *     stencil-renderable (as defined in section 4.4.4), or if <target>
       *     does not support multiple samples (ie other than
       *     TEXTURE_2D_MULTISAMPLE,  TEXTURE_2D_MULTISAMPLE_ARRAY,
       *     or RENDERBUFFER)."
       */
      if ((target != GL_RENDERBUFFER &&
           target != GL_TEXTURE_2D_MULTISAMPLE &&
           target != GL_TEXTURE_2D_MULTISAMPLE_ARRAY) ||
          !_is_renderable(ctx, internalformat))
         goto end;

      /* The GL ES 3.0 specification, section 6.1.15 page 236 says:
       *
       *     "Since multisampling is not supported for signed and unsigned
       *     integer internal formats, the value of NUM_SAMPLE_COUNTS will be
       *     zero for such formats.
       *
       * Since OpenGL ES 3.1 adds support for multisampled integer formats, we
       * have to check the version for 30 exactly.
       */
      if (pname == GL_NUM_SAMPLE_COUNTS && ctx->API == API_OPENGLES2 &&
          ctx->Version == 30 && _mesa_is_enum_format_integer(internalformat)) {
         goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_INTERNALFORMAT_SUPPORTED:
      /* Having a supported <internalformat> is implemented as a prerequisite
       * for all the <pnames>. Thus,  if we reach this point, the internalformat is
       * supported.
       */
      buffer[0] = GL_TRUE;
      break;

   case GL_INTERNALFORMAT_PREFERRED:
      /* The ARB_internalformat_query2 spec says:
       *
       *     "- INTERNALFORMAT_PREFERRED: The implementation-preferred internal
       *     format for representing resources of the specified <internalformat> is
       *     returned in <params>.
       *
       * Therefore, we let the driver answer. Note that if we reach this
       * point, it means that the internalformat is supported, so the driver
       * is called just to try to get a preferred format. If not supported,
       * GL_NONE was already returned and the driver is not called.
       */
      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_INTERNALFORMAT_RED_SIZE:
   case GL_INTERNALFORMAT_GREEN_SIZE:
   case GL_INTERNALFORMAT_BLUE_SIZE:
   case GL_INTERNALFORMAT_ALPHA_SIZE:
   case GL_INTERNALFORMAT_DEPTH_SIZE:
   case GL_INTERNALFORMAT_STENCIL_SIZE:
   case GL_INTERNALFORMAT_SHARED_SIZE:
   case GL_INTERNALFORMAT_RED_TYPE:
   case GL_INTERNALFORMAT_GREEN_TYPE:
   case GL_INTERNALFORMAT_BLUE_TYPE:
   case GL_INTERNALFORMAT_ALPHA_TYPE:
   case GL_INTERNALFORMAT_DEPTH_TYPE:
   case GL_INTERNALFORMAT_STENCIL_TYPE: {
      GLint baseformat;
      mesa_format texformat;

      if (target != GL_RENDERBUFFER) {
         if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
            goto end;

         baseformat = _mesa_base_tex_format(ctx, internalformat);
      } else {
         baseformat = _mesa_base_fbo_format(ctx, internalformat);
      }

      /* Let the driver choose the texture format.
       *
       * Disclaimer: I am considering that drivers use for renderbuffers the
       * same format-choice logic as for textures.
       */
      texformat = ctx->Driver.ChooseTextureFormat(ctx, target, internalformat,
                                                  GL_NONE /*format */, GL_NONE /* type */);

      if (texformat == MESA_FORMAT_NONE || baseformat <= 0)
         goto end;

      /* Implementation based on what Mesa does for glGetTexLevelParameteriv
       * and glGetRenderbufferParameteriv functions.
       */
      if (pname == GL_INTERNALFORMAT_SHARED_SIZE) {
         if (_mesa_has_EXT_texture_shared_exponent(ctx) &&
             target != GL_TEXTURE_BUFFER &&
             target != GL_RENDERBUFFER &&
             texformat == MESA_FORMAT_R9G9B9E5_FLOAT) {
            buffer[0] = 5;
         }
         goto end;
      }

      if (!_mesa_base_format_has_channel(baseformat, pname))
         goto end;

      switch (pname) {
      case GL_INTERNALFORMAT_DEPTH_SIZE:
         if (ctx->API != API_OPENGL_CORE &&
             !_mesa_has_ARB_depth_texture(ctx) &&
             target != GL_RENDERBUFFER &&
             target != GL_TEXTURE_BUFFER)
            goto end;
         /* fallthrough */
      case GL_INTERNALFORMAT_RED_SIZE:
      case GL_INTERNALFORMAT_GREEN_SIZE:
      case GL_INTERNALFORMAT_BLUE_SIZE:
      case GL_INTERNALFORMAT_ALPHA_SIZE:
      case GL_INTERNALFORMAT_STENCIL_SIZE:
         buffer[0] = _mesa_get_format_bits(texformat, pname);
         break;

      case GL_INTERNALFORMAT_DEPTH_TYPE:
         if (!_mesa_has_ARB_texture_float(ctx))
            goto end;
         /* fallthrough */
      case GL_INTERNALFORMAT_RED_TYPE:
      case GL_INTERNALFORMAT_GREEN_TYPE:
      case GL_INTERNALFORMAT_BLUE_TYPE:
      case GL_INTERNALFORMAT_ALPHA_TYPE:
      case GL_INTERNALFORMAT_STENCIL_TYPE:
         buffer[0]  = _mesa_get_format_datatype(texformat);
         break;

      default:
         break;

      }
      break;
   }

      /* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the
       * returned values should be different to the values returned by
       * GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/
   case GL_MAX_WIDTH:
   case GL_MAX_HEIGHT:
   case GL_MAX_DEPTH: {
      GLenum get_pname;
      GLint dimensions;
      GLint min_dimensions;

      /* From query2:MAX_HEIGHT spec (as example):
       *
       * "If the resource does not have at least two dimensions, or if the
       * resource is unsupported, zero is returned."
       */
      dimensions = get_target_dimensions(target);
      min_dimensions = get_min_dimensions(pname);
      if (dimensions < min_dimensions)
         goto end;

      get_pname = equivalentSizePname(target, pname);
      if (get_pname == 0)
         goto end;

      _mesa_GetIntegerv(get_pname, buffer);
      break;
   }

   case GL_MAX_LAYERS:
      if (!_mesa_has_EXT_texture_array(ctx))
         goto end;

      if (!_mesa_is_array_texture(target))
         goto end;

      _mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, buffer);
      break;

   case GL_MAX_COMBINED_DIMENSIONS:{
      GLint64 combined_value = 1;
      GLenum max_dimensions_pnames[] = {
         GL_MAX_WIDTH,
         GL_MAX_HEIGHT,
         GL_MAX_DEPTH,
         GL_SAMPLES
      };
      unsigned i;
      GLint current_value;

      /* Combining the dimensions. Note that for array targets, this would
       * automatically include the value of MAX_LAYERS, as that value is
       * returned as MAX_HEIGHT or MAX_DEPTH */
      for (i = 0; i < 4; i++) {
         if (max_dimensions_pnames[i] == GL_SAMPLES &&
             !is_multisample_target(target))
            continue;

         _mesa_GetInternalformativ(target, internalformat,
                                   max_dimensions_pnames[i],
                                   1, &current_value);

         if (current_value != 0)
            combined_value *= current_value;
      }

      if (_mesa_is_cube_map_texture(target))
         combined_value *= 6;

      /* We pack the 64-bit value on two 32-bit values. Calling the 32-bit
       * query, this would work as far as the value can be hold on a 32-bit
       * signed integer. For the 64-bit query, the wrapper around the 32-bit
       * query will unpack the value */
      memcpy(buffer, &combined_value, sizeof(GLint64));
      break;
   }

   case GL_COLOR_COMPONENTS:
      /* The ARB_internalformat_query2 spec says:
       *
       *     "- COLOR_COMPONENTS: If the internal format contains any color
       *     components (R, G, B, or A), TRUE is returned in <params>.
       *     If the internal format is unsupported or contains no color
       *     components, FALSE is returned."
       */
      if (_mesa_is_color_format(internalformat))
         buffer[0] = GL_TRUE;
      break;

   case GL_DEPTH_COMPONENTS:
      /* The ARB_internalformat_query2 spec says:
       *
       *     "- DEPTH_COMPONENTS: If the internal format contains a depth
       *     component (D), TRUE is returned in <params>. If the internal format
       *     is unsupported or contains no depth component, FALSE is returned."
       */
      if (_mesa_is_depth_format(internalformat) ||
          _mesa_is_depthstencil_format(internalformat))
         buffer[0] = GL_TRUE;
      break;

   case GL_STENCIL_COMPONENTS:
      /* The ARB_internalformat_query2 spec says:
       *
       *     "- STENCIL_COMPONENTS: If the internal format contains a stencil
       *     component (S), TRUE is returned in <params>. If the internal format
       *     is unsupported or contains no stencil component, FALSE is returned.
       */
      if (_mesa_is_stencil_format(internalformat) ||
          _mesa_is_depthstencil_format(internalformat))
         buffer[0] = GL_TRUE;
      break;

   case GL_COLOR_RENDERABLE:
   case GL_DEPTH_RENDERABLE:
   case GL_STENCIL_RENDERABLE:
      if (!_is_renderable(ctx, internalformat))
         goto end;

      if (pname == GL_COLOR_RENDERABLE) {
         if (!_mesa_is_color_format(internalformat))
            goto end;
      } else {
         GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat);
         if (baseFormat != GL_DEPTH_STENCIL &&
             ((pname == GL_DEPTH_RENDERABLE && baseFormat != GL_DEPTH_COMPONENT) ||
              (pname == GL_STENCIL_RENDERABLE && baseFormat != GL_STENCIL_INDEX)))
            goto end;
      }

      buffer[0] = GL_TRUE;
      break;

   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
      if (!_mesa_has_EXT_texture_array(ctx) ||
          _legal_target_for_framebuffer_texture_layer(ctx, target))
         goto end;
      /* fallthrough */
   case GL_FRAMEBUFFER_RENDERABLE:
   case GL_FRAMEBUFFER_BLEND:
      if (!_mesa_has_ARB_framebuffer_object(ctx))
         goto end;

      if (target == GL_TEXTURE_BUFFER ||
          !_is_renderable(ctx, internalformat))
         goto end;

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_READ_PIXELS:
   case GL_READ_PIXELS_FORMAT:
   case GL_READ_PIXELS_TYPE:
      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_TEXTURE_IMAGE_FORMAT:
   case GL_GET_TEXTURE_IMAGE_FORMAT:
   case GL_TEXTURE_IMAGE_TYPE:
   case GL_GET_TEXTURE_IMAGE_TYPE:
      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_MIPMAP:
   case GL_MANUAL_GENERATE_MIPMAP:
   case GL_AUTO_GENERATE_MIPMAP:
      if (!_mesa_is_valid_generate_texture_mipmap_target(ctx, target) ||
          !_mesa_is_valid_generate_texture_mipmap_internalformat(ctx,
                                                              internalformat)) {
         goto end;
      }

      if (pname == GL_MIPMAP) {
         buffer[0] = GL_TRUE;
         goto end;
      }
      else if (pname == GL_MANUAL_GENERATE_MIPMAP) {
         if (!_mesa_has_ARB_framebuffer_object(ctx))
            goto end;
      }
      else {
         /* From ARB_internalformat_query2:
          *    "Dependencies on OpenGL 3.2 (Core Profile)
          *     In core profiles for OpenGL 3.2 and later versions, queries
          *     for the AUTO_GENERATE_MIPMAP <pname> return the appropriate
          *     unsupported response."
          */
         if (_mesa_is_desktop_gl(ctx) && ctx->Version >= 32)
            goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_COLOR_ENCODING:
      if (!_mesa_is_color_format(internalformat))
         goto end;

      if (_mesa_is_srgb_format(internalformat))
         buffer[0] = GL_SRGB;
      else
         buffer[0] = GL_LINEAR;
      break;

   case GL_SRGB_READ:
      if (!_mesa_has_EXT_texture_sRGB(ctx) ||
          !_mesa_is_srgb_format(internalformat)) {
         goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_SRGB_WRITE:
      if (!_mesa_has_EXT_framebuffer_sRGB(ctx) ||
          !_mesa_is_color_format(internalformat)) {
         goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_SRGB_DECODE_ARB:
      /* Presence of EXT_texture_sRGB_decode was already verified */
      if (!_mesa_has_EXT_texture_sRGB(ctx) ||
          target == GL_RENDERBUFFER ||
          !_mesa_is_srgb_format(internalformat)) {
         goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_FILTER:
      /* If it doesn't allow to set sampler parameters then it would not allow
       * to set a filter different to GL_NEAREST. In practice, this method
       * only filters out MULTISAMPLE/MULTISAMPLE_ARRAY */
      if (!_mesa_target_allows_setting_sampler_parameters(target))
         goto end;

      if (_mesa_is_enum_format_integer(internalformat))
         goto end;

      if (target == GL_TEXTURE_BUFFER)
         goto end;

      /* At this point we know that multi-texel filtering is supported. We
       * need to call the driver to know if it is CAVEAT_SUPPORT or
       * FULL_SUPPORT.
       */
      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_VERTEX_TEXTURE:
   case GL_TESS_CONTROL_TEXTURE:
   case GL_TESS_EVALUATION_TEXTURE:
   case GL_GEOMETRY_TEXTURE:
   case GL_FRAGMENT_TEXTURE:
   case GL_COMPUTE_TEXTURE:
      if (target == GL_RENDERBUFFER)
         goto end;

      if ((pname == GL_TESS_CONTROL_TEXTURE ||
           pname == GL_TESS_EVALUATION_TEXTURE) &&
          !_mesa_has_tessellation(ctx))
         goto end;

      if (pname == GL_GEOMETRY_TEXTURE && !_mesa_has_geometry_shaders(ctx))
         goto end;

      if (pname == GL_COMPUTE_TEXTURE && !_mesa_has_compute_shaders(ctx))
         goto end;

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_TEXTURE_GATHER:
   case GL_TEXTURE_GATHER_SHADOW:
      if (!_mesa_has_ARB_texture_gather(ctx))
         goto end;

      /* fallthrough */
   case GL_TEXTURE_SHADOW:
      /* Only depth or depth-stencil image formats make sense in shadow
         samplers */
      if (pname != GL_TEXTURE_GATHER &&
          !_mesa_is_depth_format(internalformat) &&
          !_mesa_is_depthstencil_format(internalformat))
         goto end;

      /* Validate the target for shadow and gather operations */
      switch (target) {
      case GL_TEXTURE_2D:
      case GL_TEXTURE_2D_ARRAY:
      case GL_TEXTURE_CUBE_MAP:
      case GL_TEXTURE_CUBE_MAP_ARRAY:
      case GL_TEXTURE_RECTANGLE:
         break;

      case GL_TEXTURE_1D:
      case GL_TEXTURE_1D_ARRAY:
         /* 1D and 1DArray textures are not admitted in gather operations */
         if (pname != GL_TEXTURE_SHADOW)
            goto end;
         break;

      default:
         goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_SHADER_IMAGE_LOAD:
   case GL_SHADER_IMAGE_STORE:
      if (!_mesa_has_ARB_shader_image_load_store(ctx))
         goto end;

      /* We call to _mesa_is_shader_image_format_supported
       * using "internalformat" as parameter, because the
       * the ARB_internalformat_query2 spec says:
       * "In this case the <internalformat> is the value of the <format>
       * parameter that is passed to BindImageTexture."
       */
      if (target == GL_RENDERBUFFER ||
          !_mesa_is_shader_image_format_supported(ctx, internalformat))
         goto end;

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_SHADER_IMAGE_ATOMIC:
      if (!_mesa_has_ARB_shader_image_load_store(ctx))
         goto end;

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_IMAGE_TEXEL_SIZE: {
      mesa_format image_format;

      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
          target == GL_RENDERBUFFER)
         goto end;

      image_format = _mesa_get_shader_image_format(internalformat);
      if (image_format == MESA_FORMAT_NONE)
         goto end;

      /* We return bits */
      buffer[0] = (_mesa_get_format_bytes(image_format) * 8);
      break;
   }

   case GL_IMAGE_COMPATIBILITY_CLASS:
      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
          target == GL_RENDERBUFFER)
         goto end;

      buffer[0] = _mesa_get_image_format_class(internalformat);
      break;

   case GL_IMAGE_PIXEL_FORMAT: {
      GLint base_format;

      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
          target == GL_RENDERBUFFER ||
          !_mesa_is_shader_image_format_supported(ctx, internalformat))
         goto end;

      base_format = _mesa_base_tex_format(ctx, internalformat);
      if (base_format == -1)
         goto end;

      if (_mesa_is_enum_format_integer(internalformat))
         buffer[0] = _mesa_base_format_to_integer_format(base_format);
      else
         buffer[0] = base_format;
      break;
   }

   case GL_IMAGE_PIXEL_TYPE: {
      mesa_format image_format;
      GLenum datatype;
      GLuint comps;

      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
          target == GL_RENDERBUFFER)
         goto end;

      image_format = _mesa_get_shader_image_format(internalformat);
      if (image_format == MESA_FORMAT_NONE)
         goto end;

      _mesa_uncompressed_format_to_type_and_comps(image_format, &datatype,
                                                  &comps);
      if (!datatype)
         goto end;

      buffer[0] = datatype;
      break;
   }

   case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE: {
      if (!_mesa_has_ARB_shader_image_load_store(ctx))
         goto end;

      if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
         goto end;

      /* From spec: "Equivalent to calling GetTexParameter with <value> set
       * to IMAGE_FORMAT_COMPATIBILITY_TYPE."
       *
       * GetTexParameter just returns
       * tex_obj->ImageFormatCompatibilityType. We create a fake tex_obj
       * just with the purpose of getting the value.
       */
      struct gl_texture_object *tex_obj = _mesa_new_texture_object(ctx, 0, target);
      buffer[0] = tex_obj->ImageFormatCompatibilityType;
      _mesa_delete_texture_object(ctx, tex_obj);

      break;
   }

   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
      if (target == GL_RENDERBUFFER)
         goto end;

      if (!_mesa_is_depthstencil_format(internalformat)) {
         if (((pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST ||
               pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE) &&
              !_mesa_is_depth_format(internalformat)) ||
             ((pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST ||
               pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE) &&
              !_mesa_is_stencil_format(internalformat)))
            goto end;
      }

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_TEXTURE_COMPRESSED:
      buffer[0] = _mesa_is_compressed_format(ctx, internalformat);
      break;

   case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
   case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
   case GL_TEXTURE_COMPRESSED_BLOCK_SIZE: {
      mesa_format mesaformat;
      GLint block_size;

      mesaformat = _mesa_glenum_to_compressed_format(internalformat);
      if (mesaformat == MESA_FORMAT_NONE)
         goto end;

      block_size = _mesa_get_format_bytes(mesaformat);
      assert(block_size > 0);

      if (pname == GL_TEXTURE_COMPRESSED_BLOCK_SIZE) {
         buffer[0] = block_size;
      } else {
         GLuint bwidth, bheight;

         /* Returns the width and height in pixels. We return bytes */
         _mesa_get_format_block_size(mesaformat, &bwidth, &bheight);
         assert(bwidth > 0 && bheight > 0);

         if (pname == GL_TEXTURE_COMPRESSED_BLOCK_WIDTH)
            buffer[0] = block_size / bheight;
         else
            buffer[0] = block_size / bwidth;
      }
      break;
   }

   case GL_CLEAR_BUFFER:
      if (target != GL_TEXTURE_BUFFER)
         goto end;

      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                      buffer);
      break;

   case GL_TEXTURE_VIEW:
   case GL_VIEW_COMPATIBILITY_CLASS:
      if (!_mesa_has_ARB_texture_view(ctx) ||
          target == GL_TEXTURE_BUFFER ||
          target == GL_RENDERBUFFER)
         goto end;

      if (pname == GL_TEXTURE_VIEW) {
         ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                         buffer);
      } else {
         GLenum view_class = _mesa_texture_view_lookup_view_class(ctx,
                                                                  internalformat);
         if (view_class == GL_FALSE)
            goto end;

         buffer[0] = view_class;
      }
      break;

   default:
      unreachable("bad param");
   }

 end:
   if (bufSize != 0 && params == NULL) {
      /* Emit a warning to aid application debugging, but go ahead and do the
       * memcpy (and probably crash) anyway.
       */
      _mesa_warning(ctx,
                    "glGetInternalformativ(bufSize = %d, but params = NULL)",
                    bufSize);
   }

   /* Copy the data from the temporary buffer to the buffer supplied by the
    * application.  Clamp the size of the copy to the size supplied by the
    * application.
    */
   memcpy(params, buffer, MIN2(bufSize, 16) * sizeof(GLint));

   return;
}

void GLAPIENTRY
_mesa_GetInternalformati64v(GLenum target, GLenum internalformat,
                            GLenum pname, GLsizei bufSize, GLint64 *params)
{
   GLint params32[16];
   unsigned i;
   GLsizei realSize = MIN2(bufSize, 16);
   GLsizei callSize;

   GET_CURRENT_CONTEXT(ctx);

   ASSERT_OUTSIDE_BEGIN_END(ctx);

   if (!_mesa_has_ARB_internalformat_query2(ctx)) {
      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformati64v");
      return;
   }

   /* For SAMPLES there are cases where params needs to remain unmodified. As
    * no pname can return a negative value, we fill params32 with negative
    * values as reference values, that can be used to know what copy-back to
    * params */
   memset(params32, -1, 16);

   /* For GL_MAX_COMBINED_DIMENSIONS we need to get back 2 32-bit integers,
    * and at the same time we only need 2. So for that pname, we call the
    * 32-bit query with bufSize 2, except on the case of bufSize 0, that is
    * basically like asking to not get the value, but that is a caller
    * problem. */
   if (pname == GL_MAX_COMBINED_DIMENSIONS && bufSize > 0)
      callSize = 2;
   else
      callSize = bufSize;

   _mesa_GetInternalformativ(target, internalformat, pname, callSize, params32);

   if (pname == GL_MAX_COMBINED_DIMENSIONS) {
      memcpy(params, params32, sizeof(GLint64));
   } else {
      for (i = 0; i < realSize; i++) {
         /* We only copy back the values that changed */
         if (params32[i] < 0)
            break;
         params[i] = (GLint64) params32[i];
      }
   }
}