summaryrefslogtreecommitdiff
path: root/indra/newview/llviewertexturelist.cpp
blob: 6306e15f5c18a918fe1ce86e761347919982523c (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
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
/** 
 * @file llviewertexturelist.cpp
 * @brief Object for managing the list of images within a region
 *
 * $LicenseInfo:firstyear=2000&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include <sys/stat.h>

#include "llviewertexturelist.h"

#include "llgl.h" // fot gathering stats from GL
#include "llimagegl.h"
#include "llimagebmp.h"
#include "llimagej2c.h"
#include "llimagetga.h"
#include "llimagejpeg.h"
#include "llimagepng.h"
#include "llimageworker.h"

#include "llsdserialize.h"
#include "llsys.h"
#include "llfilesystem.h"
#include "llxmltree.h"
#include "message.h"

#include "lldrawpoolbump.h" // to init bumpmap images
#include "lltexturecache.h"
#include "lltexturefetch.h"
#include "llviewercontrol.h"
#include "llviewertexture.h"
#include "llviewermedia.h"
#include "llviewernetwork.h"
#include "llviewerregion.h"
#include "llviewerstats.h"
#include "pipeline.h"
#include "llappviewer.h"
#include "llxuiparser.h"
#include "lltracerecording.h"
#include "llviewerdisplay.h"
#include "llviewerwindow.h"
#include "llprogressview.h"
////////////////////////////////////////////////////////////////////////////

void (*LLViewerTextureList::sUUIDCallback)(void **, const LLUUID&) = NULL;

S32 LLViewerTextureList::sNumImages = 0;

LLViewerTextureList gTextureList;

ETexListType get_element_type(S32 priority)
{
    return (priority == LLViewerFetchedTexture::BOOST_ICON) ? TEX_LIST_SCALE : TEX_LIST_STANDARD;
}

///////////////////////////////////////////////////////////////////////////////

LLTextureKey::LLTextureKey()
: textureId(LLUUID::null),
textureType(TEX_LIST_STANDARD)
{
}

LLTextureKey::LLTextureKey(LLUUID id, ETexListType tex_type)
: textureId(id), textureType(tex_type)
{
}

///////////////////////////////////////////////////////////////////////////////

LLViewerTextureList::LLViewerTextureList() 
	: mForceResetTextureStats(FALSE),
	mMaxResidentTexMemInMegaBytes(0),
	mMaxTotalTextureMemInMegaBytes(0),
	mInitialized(FALSE)
{
}

void LLViewerTextureList::init()
{			
	mInitialized = TRUE ;
	sNumImages = 0;
	mMaxResidentTexMemInMegaBytes = (U32Bytes)0;
	mMaxTotalTextureMemInMegaBytes = (U32Bytes)0;
	
	// Update how much texture RAM we're allowed to use.
	updateMaxResidentTexMem(S32Megabytes(0)); // 0 = use current
	
	doPreloadImages();
}


void LLViewerTextureList::doPreloadImages()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	LL_DEBUGS("ViewerImages") << "Preloading images..." << LL_ENDL;
	
	llassert_always(mInitialized) ;
	llassert_always(mImageList.empty()) ;
	llassert_always(mUUIDMap.empty()) ;

	// Set the "missing asset" image
	LLViewerFetchedTexture::sMissingAssetImagep = LLViewerTextureManager::getFetchedTextureFromFile("missing_asset.tga", FTT_LOCAL_FILE, MIPMAP_NO, LLViewerFetchedTexture::BOOST_UI);
	
	// Set the "white" image
	LLViewerFetchedTexture::sWhiteImagep = LLViewerTextureManager::getFetchedTextureFromFile("white.tga", FTT_LOCAL_FILE, MIPMAP_NO, LLViewerFetchedTexture::BOOST_UI);
	LLTexUnit::sWhiteTexture = LLViewerFetchedTexture::sWhiteImagep->getTexName();
	LLUIImageList* image_list = LLUIImageList::getInstance();

	// Set the default flat normal map
	LLViewerFetchedTexture::sFlatNormalImagep = LLViewerTextureManager::getFetchedTextureFromFile("flatnormal.tga", FTT_LOCAL_FILE, MIPMAP_NO, LLViewerFetchedTexture::BOOST_BUMP);
	
	image_list->initFromFile();
	
	// turn off clamping and bilinear filtering for uv picking images
	//LLViewerFetchedTexture* uv_test = preloadUIImage("uv_test1.tga", LLUUID::null, FALSE);
	//uv_test->setClamp(FALSE, FALSE);
	//uv_test->setMipFilterNearest(TRUE, TRUE);
	//uv_test = preloadUIImage("uv_test2.tga", LLUUID::null, FALSE);
	//uv_test->setClamp(FALSE, FALSE);
	//uv_test->setMipFilterNearest(TRUE, TRUE);

	LLViewerFetchedTexture* image = LLViewerTextureManager::getFetchedTextureFromFile("silhouette.j2c", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI);
	if (image) 
	{
		image->setAddressMode(LLTexUnit::TAM_WRAP);
		mImagePreloads.insert(image);
	}
	image = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryLines.png", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI);
	if (image) 
	{
		image->setAddressMode(LLTexUnit::TAM_WRAP);	
		mImagePreloads.insert(image);
	}
	image = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryPassLines.png", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI);
	if (image) 
	{
		image->setAddressMode(LLTexUnit::TAM_WRAP);
		mImagePreloads.insert(image);
	}
	image = LLViewerTextureManager::getFetchedTextureFromFile("transparent.j2c", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI, LLViewerTexture::FETCHED_TEXTURE,
		0, 0, IMG_TRANSPARENT);
	if (image) 
	{
		image->setAddressMode(LLTexUnit::TAM_WRAP);
		mImagePreloads.insert(image);
	}
	image = LLViewerTextureManager::getFetchedTextureFromFile("alpha_gradient.tga", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI, LLViewerTexture::FETCHED_TEXTURE,
		GL_ALPHA8, GL_ALPHA, IMG_ALPHA_GRAD);
	if (image)
	{
		image->setAddressMode(LLTexUnit::TAM_CLAMP);
		mImagePreloads.insert(image);
	}
	image = LLViewerTextureManager::getFetchedTextureFromFile("alpha_gradient_2d.j2c", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI, LLViewerTexture::FETCHED_TEXTURE,
		GL_ALPHA8, GL_ALPHA, IMG_ALPHA_GRAD_2D);
	if (image)
	{
		image->setAddressMode(LLTexUnit::TAM_CLAMP);
		mImagePreloads.insert(image);
	}

	LLPointer<LLImageRaw> img_blak_square_tex(new LLImageRaw(2, 2, 3));
	memset(img_blak_square_tex->getData(), 0, img_blak_square_tex->getDataSize());
	LLPointer<LLViewerFetchedTexture> img_blak_square(new LLViewerFetchedTexture(img_blak_square_tex, FTT_DEFAULT, FALSE));
	gBlackSquareID = img_blak_square->getID();
	img_blak_square->setUnremovable(TRUE);
	addImage(img_blak_square, TEX_LIST_STANDARD);
}

static std::string get_texture_list_name()
{
    if (LLGridManager::getInstance()->isInProductionGrid())
    {
        return gDirUtilp->getExpandedFilename(LL_PATH_CACHE,
            "texture_list_" + gSavedSettings.getString("LoginLocation") + "." + gDirUtilp->getUserName() + ".xml");
    }
    else
    {
        const std::string& grid_id_str = LLGridManager::getInstance()->getGridId();
        const std::string& grid_id_lower = utf8str_tolower(grid_id_str);
        return gDirUtilp->getExpandedFilename(LL_PATH_CACHE,
            "texture_list_" + gSavedSettings.getString("LoginLocation") + "." + gDirUtilp->getUserName() + "." + grid_id_lower + ".xml");
    }
}

void LLViewerTextureList::doPrefetchImages()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	gTextureTimer.start();
	gTextureTimer.pause();

    // todo: do not load without getViewerAssetUrl()
    // either fail login without caps or provide this
    // in some other way, textures won't load otherwise
    LLViewerFetchedTexture *imagep = findImage(DEFAULT_WATER_NORMAL, TEX_LIST_STANDARD);
    if (!imagep)
    {
        // add it to mImagePreloads only once
        imagep = LLViewerTextureManager::getFetchedTexture(DEFAULT_WATER_NORMAL, FTT_DEFAULT, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI);
        if (imagep)
        {
            imagep->setAddressMode(LLTexUnit::TAM_WRAP);
            mImagePreloads.insert(imagep);
        }
    }

    LLViewerTextureManager::getFetchedTexture(IMG_SHOT);
    LLViewerTextureManager::getFetchedTexture(IMG_SMOKE_POOF);

    LLStandardBumpmap::addstandard();

	if (LLAppViewer::instance()->getPurgeCache())
	{
		// cache was purged, no point
		return;
	}
	
	// Pre-fetch textures from last logout
	LLSD imagelist;
	std::string filename = get_texture_list_name();
	llifstream file;
	file.open(filename.c_str());
	if (file.is_open())
	{
		if ( ! LLSDSerialize::fromXML(imagelist, file) )
        {
            file.close();
            LL_WARNS() << "XML parse error reading texture list '" << filename << "'" << LL_ENDL;
            LL_WARNS() << "Removing invalid texture list '" << filename << "'" << LL_ENDL;
            LLFile::remove(filename);
            return;
        }
        file.close();
	}
    S32 texture_count = 0;
	for (LLSD::array_iterator iter = imagelist.beginArray();
		 iter != imagelist.endArray(); ++iter)
	{
		LLSD imagesd = *iter;
		LLUUID uuid = imagesd["uuid"];
		S32 pixel_area = imagesd["area"];
		S32 texture_type = imagesd["type"];

		if(LLViewerTexture::FETCHED_TEXTURE == texture_type || LLViewerTexture::LOD_TEXTURE == texture_type)
		{
			LLViewerFetchedTexture* image = LLViewerTextureManager::getFetchedTexture(uuid, FTT_DEFAULT, MIPMAP_TRUE, LLGLTexture::BOOST_NONE, texture_type);
			if (image)
			{
                texture_count += 1;
				image->addTextureStats((F32)pixel_area);
			}
		}
	}
    LL_DEBUGS() << "fetched " << texture_count << " images from " << filename << LL_ENDL;
}

///////////////////////////////////////////////////////////////////////////////

LLViewerTextureList::~LLViewerTextureList()
{
}

void LLViewerTextureList::shutdown()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// clear out preloads
	mImagePreloads.clear();

	// Write out list of currently loaded textures for precaching on startup
	typedef std::set<std::pair<S32,LLViewerFetchedTexture*> > image_area_list_t;
	image_area_list_t image_area_list;
	for (image_priority_list_t::iterator iter = mImageList.begin();
		 iter != mImageList.end(); ++iter)
	{
		LLViewerFetchedTexture* image = *iter;
		if (!image->hasGLTexture() ||
			!image->getUseDiscard() ||
			image->needsAux() ||
			!image->getTargetHost().isInvalid() ||
			!image->getUrl().empty()
			)
		{
			continue; // avoid UI, baked, and other special images
		}
		if(!image->getBoundRecently())
		{
			continue ;
		}
		S32 desired = image->getDesiredDiscardLevel();
		if (desired >= 0 && desired < MAX_DISCARD_LEVEL)
		{
			S32 pixel_area = image->getWidth(desired) * image->getHeight(desired);
			image_area_list.insert(std::make_pair(pixel_area, image));
		}
	}
	
	LLSD imagelist;
	const S32 max_count = 1000;
	S32 count = 0;
	S32 image_type ;
	for (image_area_list_t::reverse_iterator riter = image_area_list.rbegin();
		 riter != image_area_list.rend(); ++riter)
	{
		LLViewerFetchedTexture* image = riter->second;
		image_type = (S32)image->getType() ;
		imagelist[count]["area"] = riter->first;
		imagelist[count]["uuid"] = image->getID();
		imagelist[count]["type"] = image_type;
		if (++count >= max_count)
			break;
	}
	
	if (count > 0 && !gDirUtilp->getExpandedFilename(LL_PATH_CACHE, "").empty())
	{
		std::string filename = get_texture_list_name();
		llofstream file;
		file.open(filename.c_str());
        LL_DEBUGS() << "saving " << imagelist.size() << " image list entries" << LL_ENDL;
		LLSDSerialize::toPrettyXML(imagelist, file);
	}
	
	//
	// Clean up "loaded" callbacks.
	//
	mCallbackList.clear();
	
	// Flush all of the references
	mLoadingStreamList.clear();
	mCreateTextureList.clear();
	mFastCacheList.clear();
	
	mUUIDMap.clear();
	
	mImageList.clear();

	mInitialized = FALSE ; //prevent loading textures again.
}

void LLViewerTextureList::dump()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	LL_INFOS() << "LLViewerTextureList::dump()" << LL_ENDL;
	for (image_priority_list_t::iterator it = mImageList.begin(); it != mImageList.end(); ++it)
	{
		LLViewerFetchedTexture* image = *it;

		LL_INFOS() << "priority " << image->getDecodePriority()
		<< " boost " << image->getBoostLevel()
		<< " size " << image->getWidth() << "x" << image->getHeight()
		<< " discard " << image->getDiscardLevel()
		<< " desired " << image->getDesiredDiscardLevel()
		<< " http://asset.siva.lindenlab.com/" << image->getID() << ".texture"
		<< LL_ENDL;
	}
}

void LLViewerTextureList::destroyGL(BOOL save_state)
{
	LLImageGL::destroyGL(save_state);
}

void LLViewerTextureList::restoreGL()
{
	llassert_always(mInitialized) ;
	LLImageGL::restoreGL();
}

/* Vertical tab container button image IDs
 Seem to not decode when running app in debug.
 
 const LLUUID BAD_IMG_ONE("1097dcb3-aef9-8152-f471-431d840ea89e");
 const LLUUID BAD_IMG_TWO("bea77041-5835-1661-f298-47e2d32b7a70");
 */

///////////////////////////////////////////////////////////////////////////////

LLViewerFetchedTexture* LLViewerTextureList::getImageFromFile(const std::string& filename,
												   FTType f_type,
												   BOOL usemipmaps,
												   LLViewerTexture::EBoostLevel boost_priority,
												   S8 texture_type,
												   LLGLint internal_format,
												   LLGLenum primary_format, 
												   const LLUUID& force_id)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!mInitialized)
	{
		return NULL ;
	}

	std::string full_path = gDirUtilp->findSkinnedFilename("textures", filename);
	if (full_path.empty())
	{
		LL_WARNS() << "Failed to find local image file: " << filename << LL_ENDL;
		LLViewerTexture::EBoostLevel priority = LLGLTexture::BOOST_UI;
		return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, TRUE, priority);
	}

	std::string url = "file://" + full_path;

	return getImageFromUrl(url, f_type, usemipmaps, boost_priority, texture_type, internal_format, primary_format, force_id);
}

LLViewerFetchedTexture* LLViewerTextureList::getImageFromUrl(const std::string& url,
												   FTType f_type,
												   BOOL usemipmaps,
												   LLViewerTexture::EBoostLevel boost_priority,
												   S8 texture_type,
												   LLGLint internal_format,
												   LLGLenum primary_format, 
												   const LLUUID& force_id)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!mInitialized)
	{
		return NULL ;
	}

	// generate UUID based on hash of filename
	LLUUID new_id;
	if (force_id.notNull())
	{
		new_id = force_id;
	}
	else
	{
		new_id.generate(url);
	}

	LLPointer<LLViewerFetchedTexture> imagep = findImage(new_id, get_element_type(boost_priority));

	if (!imagep.isNull())
	{
		LLViewerFetchedTexture *texture = imagep.get();
		if (texture->getUrl().empty())
		{
			LL_WARNS() << "Requested texture " << new_id << " already exists but does not have a URL" << LL_ENDL;
		}
		else if (texture->getUrl() != url)
		{
			// This is not an error as long as the images really match -
			// e.g. could be two avatars wearing the same outfit.
			LL_DEBUGS("Avatar") << "Requested texture " << new_id
								<< " already exists with a different url, requested: " << url
								<< " current: " << texture->getUrl() << LL_ENDL;
		}
		
	}
	if (imagep.isNull())
	{
		switch(texture_type)
		{
		case LLViewerTexture::FETCHED_TEXTURE:
			imagep = new LLViewerFetchedTexture(url, f_type, new_id, usemipmaps);
			break ;
		case LLViewerTexture::LOD_TEXTURE:
			imagep = new LLViewerLODTexture(url, f_type, new_id, usemipmaps);
			break ;
		default:
			LL_ERRS() << "Invalid texture type " << texture_type << LL_ENDL ;
		}		
		
		if (internal_format && primary_format)
		{
			imagep->setExplicitFormat(internal_format, primary_format);
		}

		addImage(imagep, get_element_type(boost_priority));

		if (boost_priority != 0)
		{
			if (boost_priority == LLViewerFetchedTexture::BOOST_UI)
			{
				imagep->dontDiscard();
			}
			if (boost_priority == LLViewerFetchedTexture::BOOST_ICON)
			{
				// Agent and group Icons are downloadable content, nothing manages
				// icon deletion yet, so they should not persist
				imagep->dontDiscard();
				imagep->forceActive();
			}
			imagep->setBoostLevel(boost_priority);
		}
	}

	imagep->setGLTextureCreated(true);

	return imagep;
}


LLViewerFetchedTexture* LLViewerTextureList::getImage(const LLUUID &image_id,
												   FTType f_type,
												   BOOL usemipmaps,
												   LLViewerTexture::EBoostLevel boost_priority,
												   S8 texture_type,
												   LLGLint internal_format,
												   LLGLenum primary_format,
												   LLHost request_from_host)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!mInitialized)
	{
		return NULL ;
	}

	// Return the image with ID image_id
	// If the image is not found, creates new image and
	// enqueues a request for transmission
	
	if (image_id.isNull())
	{
		return (LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI));
	}
	
	LLPointer<LLViewerFetchedTexture> imagep = findImage(image_id, get_element_type(boost_priority));
	if (!imagep.isNull())
	{
		if (boost_priority != LLViewerTexture::BOOST_ALM && imagep->getBoostLevel() == LLViewerTexture::BOOST_ALM)
		{
			// Workaround: we need BOOST_ALM texture for something, 'rise' to NONE
			imagep->setBoostLevel(LLViewerTexture::BOOST_NONE);
		}

		LLViewerFetchedTexture *texture = imagep.get();
		if (request_from_host.isOk() &&
			!texture->getTargetHost().isOk())
		{
			LL_WARNS() << "Requested texture " << image_id << " already exists but does not have a host" << LL_ENDL;
		}
		else if (request_from_host.isOk() &&
				 texture->getTargetHost().isOk() &&
				 request_from_host != texture->getTargetHost())
		{
			LL_WARNS() << "Requested texture " << image_id << " already exists with a different target host, requested: " 
					<< request_from_host << " current: " << texture->getTargetHost() << LL_ENDL;
		}
		if (f_type != FTT_DEFAULT && imagep->getFTType() != f_type)
		{
			LL_WARNS() << "FTType mismatch: requested " << f_type << " image has " << imagep->getFTType() << LL_ENDL;
		}
		
	}
	if (imagep.isNull())
	{
		imagep = createImage(image_id, f_type, usemipmaps, boost_priority, texture_type, internal_format, primary_format, request_from_host) ;
	}

	imagep->setGLTextureCreated(true);
	
	return imagep;
}

//when this function is called, there is no such texture in the gTextureList with image_id.
LLViewerFetchedTexture* LLViewerTextureList::createImage(const LLUUID &image_id,
												   FTType f_type,
												   BOOL usemipmaps,
												   LLViewerTexture::EBoostLevel boost_priority,
												   S8 texture_type,
												   LLGLint internal_format,
												   LLGLenum primary_format,
												   LLHost request_from_host)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	static LLCachedControl<bool> fast_cache_fetching_enabled(gSavedSettings, "FastCacheFetchEnabled", true);

	LLPointer<LLViewerFetchedTexture> imagep ;
	switch(texture_type)
	{
	case LLViewerTexture::FETCHED_TEXTURE:
		imagep = new LLViewerFetchedTexture(image_id, f_type, request_from_host, usemipmaps);
		break ;
	case LLViewerTexture::LOD_TEXTURE:
		imagep = new LLViewerLODTexture(image_id, f_type, request_from_host, usemipmaps);
		break ;
	default:
		LL_ERRS() << "Invalid texture type " << texture_type << LL_ENDL ;
	}
	
	if (internal_format && primary_format)
	{
		imagep->setExplicitFormat(internal_format, primary_format);
	}

	addImage(imagep, get_element_type(boost_priority));

	if (boost_priority != 0)
	{
		if (boost_priority == LLViewerFetchedTexture::BOOST_UI)
		{
			imagep->dontDiscard();
		}
		if (boost_priority == LLViewerFetchedTexture::BOOST_ICON)
		{
			// Agent and group Icons are downloadable content, nothing manages
			// icon deletion yet, so they should not persist.
			imagep->dontDiscard();
			imagep->forceActive();
		}
		imagep->setBoostLevel(boost_priority);
	}
	else
	{
		//by default, the texture can not be removed from memory even if it is not used.
		//here turn this off
		//if this texture should be set to NO_DELETE, call setNoDelete() afterwards.
		imagep->forceActive() ;
	}

	if(fast_cache_fetching_enabled)
	{
		mFastCacheList.insert(imagep);
		imagep->setInFastCacheList(true);
	}
	return imagep ;
}

void LLViewerTextureList::findTexturesByID(const LLUUID &image_id, std::vector<LLViewerFetchedTexture*> &output)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
    LLTextureKey search_key(image_id, TEX_LIST_STANDARD);
    uuid_map_t::iterator iter = mUUIDMap.lower_bound(search_key);
    while (iter != mUUIDMap.end() && iter->first.textureId == image_id)
    {
        output.push_back(iter->second);
        iter++;
    }
}

LLViewerFetchedTexture *LLViewerTextureList::findImage(const LLTextureKey &search_key)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
    uuid_map_t::iterator iter = mUUIDMap.find(search_key);
    if (iter == mUUIDMap.end())
        return NULL;
    return iter->second;
}

LLViewerFetchedTexture *LLViewerTextureList::findImage(const LLUUID &image_id, ETexListType tex_type)
{
    return findImage(LLTextureKey(image_id, tex_type));
}

void LLViewerTextureList::addImageToList(LLViewerFetchedTexture *image)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	assert_main_thread();
	llassert_always(mInitialized) ;
	llassert(image);
	if (image->isInImageList())
	{	// Flag is already set?
		LL_WARNS() << "LLViewerTextureList::addImageToList - image " << image->getID()  << " already in list" << LL_ENDL;
	}
	else
	{
	if((mImageList.insert(image)).second != true) 
	{
			LL_WARNS() << "Error happens when insert image " << image->getID()  << " into mImageList!" << LL_ENDL ;
	}
	image->setInImageList(TRUE) ;
}
}

void LLViewerTextureList::removeImageFromList(LLViewerFetchedTexture *image)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	assert_main_thread();
	llassert_always(mInitialized) ;
	llassert(image);

	S32 count = 0;
	if (image->isInImageList())
	{
		count = mImageList.erase(image) ;
		if(count != 1) 
	{
			LL_INFOS() << "Image  " << image->getID() 
				<< " had mInImageList set but mImageList.erase() returned " << count
				<< LL_ENDL;
		}
	}
	else
	{	// Something is wrong, image is expected in list or callers should check first
		LL_INFOS() << "Calling removeImageFromList() for " << image->getID() 
			<< " but doesn't have mInImageList set"
			<< " ref count is " << image->getNumRefs()
			<< LL_ENDL;
		uuid_map_t::iterator iter = mUUIDMap.find(LLTextureKey(image->getID(), (ETexListType)image->getTextureListType()));
		if(iter == mUUIDMap.end())
		{
			LL_INFOS() << "Image  " << image->getID() << " is also not in mUUIDMap!" << LL_ENDL ;
		}
		else if (iter->second != image)
		{
			LL_INFOS() << "Image  " << image->getID() << " was in mUUIDMap but with different pointer" << LL_ENDL ;
	}
		else
	{
			LL_INFOS() << "Image  " << image->getID() << " was in mUUIDMap with same pointer" << LL_ENDL ;
		}
		count = mImageList.erase(image) ;
		if(count != 0) 
		{	// it was in the list already?
			LL_WARNS() << "Image  " << image->getID() 
				<< " had mInImageList false but mImageList.erase() returned " << count
				<< LL_ENDL;
		}
	}
      
	image->setInImageList(FALSE) ;
}

void LLViewerTextureList::addImage(LLViewerFetchedTexture *new_image, ETexListType tex_type)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (!new_image)
	{
		return;
	}
	//llassert(new_image);
	LLUUID image_id = new_image->getID();
	LLTextureKey key(image_id, tex_type);
	
	LLViewerFetchedTexture *image = findImage(key);
	if (image)
	{
		LL_INFOS() << "Image with ID " << image_id << " already in list" << LL_ENDL;
	}
	sNumImages++;

	addImageToList(new_image);
	mUUIDMap[key] = new_image;
	new_image->setTextureListType(tex_type);
}


void LLViewerTextureList::deleteImage(LLViewerFetchedTexture *image)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if( image)
	{
		if (image->hasCallbacks())
		{
			mCallbackList.erase(image);
		}
		LLTextureKey key(image->getID(), (ETexListType)image->getTextureListType());
		llverify(mUUIDMap.erase(key) == 1);
		sNumImages--;
		removeImageFromList(image);
	}
}

///////////////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////////////

void LLViewerTextureList::dirtyImage(LLViewerFetchedTexture *image)
{
	mDirtyTextureList.insert(image);
}

////////////////////////////////////////////////////////////////////////////

void LLViewerTextureList::updateImages(F32 max_time)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	static BOOL cleared = FALSE;
	if(gTeleportDisplay)
	{
		if(!cleared)
		{
			clearFetchingRequests();
			gPipeline.clearRebuildGroups();
			cleared = TRUE;
		}
		return;
	}
	cleared = FALSE;

	LLAppViewer::getTextureFetch()->setTextureBandwidth(LLTrace::get_frame_recording().getPeriodMeanPerSec(LLStatViewer::TEXTURE_NETWORK_DATA_RECEIVED).value());

	{
		using namespace LLStatViewer;
		sample(NUM_IMAGES, sNumImages);
		sample(NUM_RAW_IMAGES, LLImageRaw::sRawImageCount);
		sample(GL_TEX_MEM, LLImageGL::sGlobalTextureMemory);
		sample(GL_BOUND_MEM, LLImageGL::sBoundTextureMemory);
		sample(RAW_MEM, F64Bytes(LLImageRaw::sGlobalRawMemory));
		sample(FORMATTED_MEM, F64Bytes(LLImageFormatted::sGlobalFormattedMemory));
	}

	//loading from fast cache 
	max_time -= updateImagesLoadingFastCache(max_time);
	
	updateImagesDecodePriorities();
	
    F32 total_max_time = max_time;

	max_time -= updateImagesFetchTextures(max_time);
		
	max_time = llmax(max_time, total_max_time*.50f); // at least 50% of max_time
	max_time -= updateImagesCreateTextures(max_time);
	
	if (!mDirtyTextureList.empty())
	{
		gPipeline.dirtyPoolObjectTextures(mDirtyTextureList);
		mDirtyTextureList.clear();
	}

	bool didone = false;
	for (image_list_t::iterator iter = mCallbackList.begin();
		iter != mCallbackList.end(); )
	{
		//trigger loaded callbacks on local textures immediately
		LLViewerFetchedTexture* image = *iter++;
		if (!image->getUrl().empty())
		{
			// Do stuff to handle callbacks, update priorities, etc.
			didone = image->doLoadedCallbacks();
		}
		else if (!didone)
		{
			// Do stuff to handle callbacks, update priorities, etc.
			didone = image->doLoadedCallbacks();
		}
	}
	

	updateImagesUpdateStats();
}

void LLViewerTextureList::clearFetchingRequests()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
	{
		return;
	}

	LLAppViewer::getTextureFetch()->deleteAllRequests();

	for (image_priority_list_t::iterator iter = mImageList.begin();
		 iter != mImageList.end(); ++iter)
	{
		LLViewerFetchedTexture* imagep = *iter;
		imagep->forceToDeleteRequest() ;
	}
}

void LLViewerTextureList::updateImagesDecodePriorities()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// Update the decode priority for N images each frame
	{
		F32 lazy_flush_timeout = 30.f; // stop decoding
		F32 max_inactive_time  = 20.f; // actually delete
		S32 min_refs = 3; // 1 for mImageList, 1 for mUUIDMap, 1 for local reference

		//reset imagep->getLastReferencedTimer() when screen is showing the progress view to avoid removing pre-fetched textures too soon.
		bool reset_timer = gViewerWindow->getProgressView()->getVisible();
        
        static const S32 MAX_PRIO_UPDATES = gSavedSettings.getS32("TextureFetchUpdatePriorities");         // default: 32
		const size_t max_update_count = llmin((S32) (MAX_PRIO_UPDATES*MAX_PRIO_UPDATES*gFrameIntervalSeconds.value()) + 1, MAX_PRIO_UPDATES);
		S32 update_counter = llmin(max_update_count, mUUIDMap.size());
		uuid_map_t::iterator iter = mUUIDMap.upper_bound(mLastUpdateKey);
		while ((update_counter-- > 0) && !mUUIDMap.empty())
		{
			if (iter == mUUIDMap.end())
			{
				iter = mUUIDMap.begin();
            }
            mLastUpdateKey = iter->first;
			LLPointer<LLViewerFetchedTexture> imagep = iter->second;
			++iter; // safe to increment now

			if(imagep->isInDebug() || imagep->isUnremovable())
			{
				update_counter--;
				continue; //is in debug, ignore.
			}

			//
			// Flush formatted images using a lazy flush
			//
			S32 num_refs = imagep->getNumRefs();
			if (num_refs == min_refs)
			{
				if(reset_timer)
				{
					imagep->getLastReferencedTimer()->reset();
				}
				else if (imagep->getLastReferencedTimer()->getElapsedTimeF32() > lazy_flush_timeout)
				{
					// Remove the unused image from the image list
					deleteImage(imagep);
					imagep = NULL; // should destroy the image								
				}
				continue;
			}
			else
			{
				if(imagep->hasSavedRawImage())
				{
					if(imagep->getElapsedLastReferencedSavedRawImageTime() > max_inactive_time)
					{
						imagep->destroySavedRawImage() ;
					}
				}

				if(imagep->isDeleted())
				{
					continue ;
				}
				else if(imagep->isDeletionCandidate())
				{
					imagep->destroyTexture() ;																
					continue ;
				}
				else if(imagep->isInactive())
				{
					if(reset_timer)
					{
						imagep->getLastReferencedTimer()->reset();
					}
					else if (imagep->getLastReferencedTimer()->getElapsedTimeF32() > max_inactive_time)
					{
						imagep->setDeletionCandidate() ;
					}
					continue ;
				}
				else
				{
					imagep->getLastReferencedTimer()->reset();

					//reset texture state.
					imagep->setInactive() ;										
				}
			}

			if (!imagep->isInImageList())
			{
				continue;
			}
			if(imagep->isInFastCacheList())
			{
				continue; //wait for loading from the fast cache.
			}

			imagep->processTextureStats();
			F32 old_priority = imagep->getDecodePriority();
			F32 old_priority_test = llmax(old_priority, 0.0f);
			F32 decode_priority = imagep->calcDecodePriority();
			F32 decode_priority_test = llmax(decode_priority, 0.0f);
			// Ignore < 20% difference
			if ((decode_priority_test < old_priority_test * .8f) ||
				(decode_priority_test > old_priority_test * 1.25f))
			{
				mImageList.erase(imagep) ;
				imagep->setDecodePriority(decode_priority);
				mImageList.insert(imagep);
			}
		}
	}
}

void LLViewerTextureList::setDebugFetching(LLViewerFetchedTexture* tex, S32 debug_level)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!tex->setDebugFetching(debug_level))
	{
		return;
	}

	const F32 DEBUG_PRIORITY = 100000.f;
	F32 old_priority_test = llmax(tex->getDecodePriority(), 0.0f);
	F32 decode_priority_test = DEBUG_PRIORITY;
	
	// Ignore < 20% difference
	if ((decode_priority_test < old_priority_test * .8f) ||
		(decode_priority_test > old_priority_test * 1.25f))
	{
		removeImageFromList(tex);
		tex->setDecodePriority(decode_priority_test);
		addImageToList(tex);
	}
}

/*
 static U8 get_image_type(LLViewerFetchedTexture* imagep, LLHost target_host)
 {
 // Having a target host implies this is a baked image.  I don't
 // believe that boost level has been set at this point. JC
 U8 type_from_host = (target_host.isOk() 
 ? LLImageBase::TYPE_AVATAR_BAKE 
 : LLImageBase::TYPE_NORMAL);
 S32 boost_level = imagep->getBoostLevel();
 U8 type_from_boost = ( (boost_level == LLViewerFetchedTexture::BOOST_AVATAR_BAKED 
 || boost_level == LLViewerFetchedTexture::BOOST_AVATAR_BAKED_SELF)
 ? LLImageBase::TYPE_AVATAR_BAKE 
 : LLImageBase::TYPE_NORMAL);
 if (type_from_host == LLImageBase::TYPE_NORMAL
 && type_from_boost == LLImageBase::TYPE_AVATAR_BAKE)
 {
 LL_WARNS() << "TAT: get_image_type() type_from_host doesn't match type_from_boost"
 << " host " << target_host
 << " boost " << imagep->getBoostLevel()
 << " imageid " << imagep->getID()
 << LL_ENDL;
 imagep->dump();
 }
 return type_from_host;
 }
 */

F32 LLViewerTextureList::updateImagesCreateTextures(F32 max_time)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (gGLManager.mIsDisabled) return 0.0f;
	
	//
	// Create GL textures for all textures that need them (images which have been
	// decoded, but haven't been pushed into GL).
	//
		
	LLTimer create_timer;
	image_list_t::iterator enditer = mCreateTextureList.begin();
	for (image_list_t::iterator iter = mCreateTextureList.begin();
		 iter != mCreateTextureList.end();)
	{
		image_list_t::iterator curiter = iter++;
		enditer = iter;
		LLViewerFetchedTexture *imagep = *curiter;
		imagep->createTexture();
        imagep->postCreateTexture();
		if (create_timer.getElapsedTimeF32() > max_time)
		{
			break;
		}
	}
	mCreateTextureList.erase(mCreateTextureList.begin(), enditer);
	return create_timer.getElapsedTimeF32();
}

F32 LLViewerTextureList::updateImagesLoadingFastCache(F32 max_time)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (gGLManager.mIsDisabled) return 0.0f;
	if(mFastCacheList.empty())
	{
		return 0.f;
	}
	
	//
	// loading texture raw data from the fast cache directly.
	//
		
	LLTimer timer;
	image_list_t::iterator enditer = mFastCacheList.begin();
	for (image_list_t::iterator iter = mFastCacheList.begin();
		 iter != mFastCacheList.end();)
	{
		image_list_t::iterator curiter = iter++;
		enditer = iter;
		LLViewerFetchedTexture *imagep = *curiter;
		imagep->loadFromFastCache();
		if (timer.getElapsedTimeF32() > max_time)
		{
			break;
		}
	}
	mFastCacheList.erase(mFastCacheList.begin(), enditer);
	return timer.getElapsedTimeF32();
}

void LLViewerTextureList::forceImmediateUpdate(LLViewerFetchedTexture* imagep)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!imagep)
	{
		return ;
	}
	if(imagep->isInImageList())
	{
		removeImageFromList(imagep);
	}

	imagep->processTextureStats();
	F32 decode_priority = LLViewerFetchedTexture::maxDecodePriority() ;
	imagep->setDecodePriority(decode_priority);
	addImageToList(imagep);
	
	return ;
}

F32 LLViewerTextureList::updateImagesFetchTextures(F32 max_time)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	LLTimer image_op_timer;
	
	// Update fetch for N images each frame
	static const S32 MAX_HIGH_PRIO_COUNT = gSavedSettings.getS32("TextureFetchUpdateHighPriority");         // default: 32
	static const S32 MAX_UPDATE_COUNT = gSavedSettings.getS32("TextureFetchUpdateMaxMediumPriority");       // default: 256
	static const S32 MIN_UPDATE_COUNT = gSavedSettings.getS32("TextureFetchUpdateMinMediumPriority");       // default: 32
	static const F32 MIN_PRIORITY_THRESHOLD = gSavedSettings.getF32("TextureFetchUpdatePriorityThreshold"); // default: 0.0
	static const bool SKIP_LOW_PRIO = gSavedSettings.getBOOL("TextureFetchUpdateSkipLowPriority");          // default: false

	size_t max_priority_count = llmin((S32) (MAX_HIGH_PRIO_COUNT*MAX_HIGH_PRIO_COUNT*gFrameIntervalSeconds.value())+1, MAX_HIGH_PRIO_COUNT);
	max_priority_count = llmin(max_priority_count, mImageList.size());
	
	size_t total_update_count = mUUIDMap.size();
	size_t max_update_count = llmin((S32) (MAX_UPDATE_COUNT*MAX_UPDATE_COUNT*gFrameIntervalSeconds.value())+1, MAX_UPDATE_COUNT);
	max_update_count = llmin(max_update_count, total_update_count);	
	
	// MAX_HIGH_PRIO_COUNT high priority entries
	typedef std::vector<LLViewerFetchedTexture*> entries_list_t;
	entries_list_t entries;
	size_t update_counter = max_priority_count;
	image_priority_list_t::iterator iter1 = mImageList.begin();
	while(update_counter > 0)
	{
		entries.push_back(*iter1);
		
		++iter1;
		update_counter--;
	}
	
	// MAX_UPDATE_COUNT cycled entries
	update_counter = max_update_count;	
	if(update_counter > 0)
	{
		uuid_map_t::iterator iter2 = mUUIDMap.upper_bound(mLastFetchKey);
		while ((update_counter > 0) && (total_update_count > 0))
		{
			if (iter2 == mUUIDMap.end())
			{
				iter2 = mUUIDMap.begin();
			}
			LLViewerFetchedTexture* imagep = iter2->second;
            // Skip the textures where there's really nothing to do so to give some times to others. Also skip the texture if it's already in the high prio set.
            if (!SKIP_LOW_PRIO || (SKIP_LOW_PRIO && ((imagep->getDecodePriority() > MIN_PRIORITY_THRESHOLD) || imagep->hasFetcher())))
            {
                entries.push_back(imagep);
                update_counter--;
            }

			iter2++;
			total_update_count--;
		}
	}

	size_t min_update_count = llmin(MIN_UPDATE_COUNT,(S32)(entries.size()-max_priority_count));
	S32 min_count = max_priority_count + min_update_count;
	for (entries_list_t::iterator iter3 = entries.begin();
		 iter3 != entries.end(); )
	{
		LLViewerFetchedTexture* imagep = *iter3++;
        imagep->updateFetch();

		if (min_count <= min_update_count)
		{
			mLastFetchKey = LLTextureKey(imagep->getID(), (ETexListType)imagep->getTextureListType());
		}
		if ((min_count-- <= 0) && (image_op_timer.getElapsedTimeF32() > max_time))
		{
			break;
		}
	}
	return image_op_timer.getElapsedTimeF32();
}

void LLViewerTextureList::updateImagesUpdateStats()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (mForceResetTextureStats)
	{
		for (image_priority_list_t::iterator iter = mImageList.begin();
			 iter != mImageList.end(); )
		{
			LLViewerFetchedTexture* imagep = *iter++;
			imagep->resetTextureStats();
		}
		mForceResetTextureStats = FALSE;
	}
}

void LLViewerTextureList::decodeAllImages(F32 max_time)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	LLTimer timer;

	//loading from fast cache 
	updateImagesLoadingFastCache(max_time);

	// Update texture stats and priorities
	std::vector<LLPointer<LLViewerFetchedTexture> > image_list;
	for (image_priority_list_t::iterator iter = mImageList.begin();
		 iter != mImageList.end(); )
	{
		LLViewerFetchedTexture* imagep = *iter++;
		image_list.push_back(imagep);
		imagep->setInImageList(FALSE) ;
	}

	llassert_always(image_list.size() == mImageList.size()) ;
	mImageList.clear();
	for (std::vector<LLPointer<LLViewerFetchedTexture> >::iterator iter = image_list.begin();
		 iter != image_list.end(); ++iter)
	{
		LLViewerFetchedTexture* imagep = *iter;
		imagep->processTextureStats();
		F32 decode_priority = imagep->calcDecodePriority();
		imagep->setDecodePriority(decode_priority);
		addImageToList(imagep);
	}
	image_list.clear();
	
	// Update fetch (decode)
	for (image_priority_list_t::iterator iter = mImageList.begin();
		 iter != mImageList.end(); )
	{
		LLViewerFetchedTexture* imagep = *iter++;
		imagep->updateFetch();
	}
    std::shared_ptr<LL::WorkQueue> main_queue = LLImageGLThread::sEnabled ? LL::WorkQueue::getInstance("mainloop") : NULL;
	// Run threads
	S32 fetch_pending = 0;
	while (1)
	{
		LLAppViewer::instance()->getTextureCache()->update(1); // unpauses the texture cache thread
		LLAppViewer::instance()->getImageDecodeThread()->update(1); // unpauses the image thread
		fetch_pending = LLAppViewer::instance()->getTextureFetch()->update(1); // unpauses the texture fetch thread

        if (LLImageGLThread::sEnabled)
        {
            main_queue->runFor(std::chrono::milliseconds(1));
            fetch_pending += main_queue->size();
        }

		if (fetch_pending == 0 || timer.getElapsedTimeF32() > max_time)
		{
			break;
		}
	}
	// Update fetch again
	for (image_priority_list_t::iterator iter = mImageList.begin();
		 iter != mImageList.end(); )
	{
		LLViewerFetchedTexture* imagep = *iter++;
		imagep->updateFetch();
	}
	max_time -= timer.getElapsedTimeF32();
	max_time = llmax(max_time, .001f);
	F32 create_time = updateImagesCreateTextures(max_time);
	
	LL_DEBUGS("ViewerImages") << "decodeAllImages() took " << timer.getElapsedTimeF32() << " seconds. " 
	<< " fetch_pending " << fetch_pending
	<< " create_time " << create_time
	<< LL_ENDL;
}


BOOL LLViewerTextureList::createUploadFile(const std::string& filename,
										 const std::string& out_filename,
										 const U8 codec,
										 const S32 max_image_dimentions)
{	
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// Load the image
	LLPointer<LLImageFormatted> image = LLImageFormatted::createFromType(codec);
	if (image.isNull())
	{
		LL_WARNS() << "Couldn't open the image to be uploaded." << LL_ENDL;
		return FALSE;
	}	
	if (!image->load(filename))
	{
		image->setLastError("Couldn't load the image to be uploaded.");
		return FALSE;
	}
	// Decompress or expand it in a raw image structure
	LLPointer<LLImageRaw> raw_image = new LLImageRaw;
	if (!image->decode(raw_image, 0.0f))
	{
		image->setLastError("Couldn't decode the image to be uploaded.");
		return FALSE;
	}
	// Check the image constraints
	if ((image->getComponents() != 3) && (image->getComponents() != 4))
	{
		image->setLastError("Image files with less than 3 or more than 4 components are not supported.");
		return FALSE;
	}
	// Convert to j2c (JPEG2000) and save the file locally
	LLPointer<LLImageJ2C> compressedImage = convertToUploadFile(raw_image, max_image_dimentions);
	if (compressedImage.isNull())
	{
		image->setLastError("Couldn't convert the image to jpeg2000.");
		LL_INFOS() << "Couldn't convert to j2c, file : " << filename << LL_ENDL;
		return FALSE;
	}
	if (!compressedImage->save(out_filename))
	{
		image->setLastError("Couldn't create the jpeg2000 image for upload.");
		LL_INFOS() << "Couldn't create output file : " << out_filename << LL_ENDL;
		return FALSE;
	}
	// Test to see if the encode and save worked
	LLPointer<LLImageJ2C> integrity_test = new LLImageJ2C;
	if (!integrity_test->loadAndValidate( out_filename ))
	{
		image->setLastError("The created jpeg2000 image is corrupt.");
		LL_INFOS() << "Image file : " << out_filename << " is corrupt" << LL_ENDL;
		return FALSE;
	}
	return TRUE;
}

// note: modifies the argument raw_image!!!!
LLPointer<LLImageJ2C> LLViewerTextureList::convertToUploadFile(LLPointer<LLImageRaw> raw_image, const S32 max_image_dimentions)
{
	LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	raw_image->biasedScaleToPowerOfTwo(max_image_dimentions);
	LLPointer<LLImageJ2C> compressedImage = new LLImageJ2C();
	
	if (gSavedSettings.getBOOL("LosslessJ2CUpload") &&
		(raw_image->getWidth() * raw_image->getHeight() <= LL_IMAGE_REZ_LOSSLESS_CUTOFF * LL_IMAGE_REZ_LOSSLESS_CUTOFF))
		compressedImage->setReversible(TRUE);
	

	if (gSavedSettings.getBOOL("Jpeg2000AdvancedCompression"))
	{
		// This test option will create jpeg2000 images with precincts for each level, RPCL ordering
		// and PLT markers. The block size is also optionally modifiable.
		// Note: the images hence created are compatible with older versions of the viewer.
		// Read the blocks and precincts size settings
		S32 block_size = gSavedSettings.getS32("Jpeg2000BlocksSize");
		S32 precinct_size = gSavedSettings.getS32("Jpeg2000PrecinctsSize");
		LL_INFOS() << "Advanced JPEG2000 Compression: precinct = " << precinct_size << ", block = " << block_size << LL_ENDL;
		compressedImage->initEncode(*raw_image, block_size, precinct_size, 0);
	}
	
	if (!compressedImage->encode(raw_image, 0.0f))
	{
		LL_INFOS() << "convertToUploadFile : encode returns with error!!" << LL_ENDL;
		// Clear up the pointer so we don't leak that one
		compressedImage = NULL;
	}
	
	return compressedImage;
}

// Returns min setting for TextureMemory (in MB)
S32Megabytes LLViewerTextureList::getMinVideoRamSetting()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	U32Megabytes system_ram = gSysMemory.getPhysicalMemoryKB();
	//min texture mem sets to 64M if total physical mem is more than 1.5GB
	return (system_ram > U32Megabytes(1500)) ? S32Megabytes(64) : gMinVideoRam ;
}

//static
// Returns max setting for TextureMemory (in MB)
S32Megabytes LLViewerTextureList::getMaxVideoRamSetting(bool get_recommended, float mem_multiplier)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	S32Megabytes max_texmem;
	if (gGLManager.mVRAM != 0)
	{
		// Treat any card with < 32 MB (shudder) as having 32 MB
		//  - it's going to be swapping constantly regardless
		S32Megabytes max_vram(gGLManager.mVRAM);

		if(gGLManager.mIsAMD)
		{
			//shrink the availabe vram for ATI cards because some of them do not handel texture swapping well.
			max_vram = max_vram * 0.75f; 
		}

		max_vram = llmax(max_vram, getMinVideoRamSetting());
		max_texmem = max_vram;
		if (!get_recommended)
			max_texmem *= 2;
	}
	else
	{
		if (!get_recommended)
		{
			max_texmem = (S32Megabytes)512;
		}
		else if (gSavedSettings.getBOOL("NoHardwareProbe")) //did not do hardware detection at startup
		{
			max_texmem = (S32Megabytes)512;
		}
		else
		{
			max_texmem = (S32Megabytes)128;
		}
	}

	S32Megabytes system_ram = gSysMemory.getPhysicalMemoryKB(); // In MB
	//LL_INFOS() << "*** DETECTED " << system_ram << " MB of system memory." << LL_ENDL;
	if (get_recommended)
		max_texmem = llmin(max_texmem, system_ram/2);
	else
		max_texmem = llmin(max_texmem, system_ram);
		
    // limit the texture memory to a multiple of the default if we've found some cards to behave poorly otherwise
	max_texmem = llmin(max_texmem, (S32Megabytes) (mem_multiplier * max_texmem));

	max_texmem = llclamp(max_texmem, getMinVideoRamSetting(), gMaxVideoRam); 
	
	return max_texmem;
}

bool LLViewerTextureList::isPrioRequestsFetched()
{
	static LLCachedControl<F32> prio_threshold(gSavedSettings, "TextureFetchUpdatePriorityThreshold", 0.0f);
	static LLCachedControl<F32> fetching_textures_threshold(gSavedSettings, "TextureListFetchingThreshold", 0.97f);
	S32 fetching_tex_count = 0;
	S32 tex_count_threshold = gTextureList.mImageList.size() * (1 - fetching_textures_threshold);

	for (LLViewerTextureList::image_priority_list_t::iterator iter = gTextureList.mImageList.begin();
		iter != gTextureList.mImageList.end(); )
	{
		LLPointer<LLViewerFetchedTexture> imagep = *iter++;
		if (imagep->getDecodePriority() > prio_threshold)
		{
			if (imagep->hasFetcher() || imagep->isFetching())
			{
				fetching_tex_count++;
				if (fetching_tex_count >= tex_count_threshold)
				{
					return false;
				}
			}
		}
	}

	return true;
}

const S32Megabytes VIDEO_CARD_FRAMEBUFFER_MEM(12);
const S32Megabytes MIN_MEM_FOR_NON_TEXTURE(512);
void LLViewerTextureList::updateMaxResidentTexMem(S32Megabytes mem)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// Initialize the image pipeline VRAM settings
	S32Megabytes cur_mem(gSavedSettings.getS32("TextureMemory"));
	F32 mem_multiplier = gSavedSettings.getF32("RenderTextureMemoryMultiple");
	S32Megabytes default_mem = getMaxVideoRamSetting(true, mem_multiplier); // recommended default
	if (mem == (S32Bytes)0)
	{
		mem = cur_mem > (S32Bytes)0 ? cur_mem : default_mem;
	}
	else if (mem < (S32Bytes)0)
	{
		mem = default_mem;
	}

	mem = llclamp(mem, getMinVideoRamSetting(), getMaxVideoRamSetting(false, mem_multiplier));
	if (mem != cur_mem)
	{
		gSavedSettings.setS32("TextureMemory", mem.value());
		return; //listener will re-enter this function
	}

	if (gGLManager.mVRAM == 0)
	{
		LL_WARNS() << "VRAM amount not detected, defaulting to " << mem << " MB" << LL_ENDL;
	}

	// TODO: set available resident texture mem based on use by other subsystems
	// currently max(12MB, VRAM/4) assumed...
	
	S32Megabytes vb_mem = mem;
	S32Megabytes fb_mem = llmax(VIDEO_CARD_FRAMEBUFFER_MEM, vb_mem/4);
	mMaxResidentTexMemInMegaBytes = (vb_mem - fb_mem) ; //in MB
	
	mMaxTotalTextureMemInMegaBytes = mMaxResidentTexMemInMegaBytes * 2;
	if (mMaxResidentTexMemInMegaBytes > (S32Megabytes)640)
	{
		mMaxTotalTextureMemInMegaBytes -= (mMaxResidentTexMemInMegaBytes / 4);
	}

	//system mem
	S32Megabytes system_ram = gSysMemory.getPhysicalMemoryKB();

	//minimum memory reserved for non-texture use.
	//if system_raw >= 1GB, reserve at least 512MB for non-texture use;
	//otherwise reserve half of the system_ram for non-texture use.
	S32Megabytes min_non_texture_mem = llmin(system_ram / 2, MIN_MEM_FOR_NON_TEXTURE) ; 

	if (mMaxTotalTextureMemInMegaBytes > system_ram - min_non_texture_mem)
	{
		mMaxTotalTextureMemInMegaBytes = system_ram - min_non_texture_mem ;
	}
	
	LL_INFOS() << "Total Video Memory set to: " << vb_mem << " MB" << LL_ENDL;
	LL_INFOS() << "Available Texture Memory set to: " << (vb_mem - fb_mem) << " MB" << LL_ENDL;
}

///////////////////////////////////////////////////////////////////////////////

// We've been that the asset server does not contain the requested image id.
// static
void LLViewerTextureList::processImageNotInDatabase(LLMessageSystem *msg,void **user_data)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	LLUUID image_id;
	msg->getUUIDFast(_PREHASH_ImageID, _PREHASH_ID, image_id);
	
	LLViewerFetchedTexture* image = gTextureList.findImage( image_id, TEX_LIST_STANDARD);
	if( image )
	{
		LL_WARNS() << "Image not in db" << LL_ENDL;
		image->setIsMissingAsset();
	}

    image = gTextureList.findImage(image_id, TEX_LIST_SCALE);
    if (image)
    {
        LL_WARNS() << "Icon not in db" << LL_ENDL;
        image->setIsMissingAsset();
    }
}


///////////////////////////////////////////////////////////////////////////////

// explicitly cleanup resources, as this is a singleton class with process
// lifetime so ability to perform std::map operations in destructor is not
// guaranteed.
void LLUIImageList::cleanUp()
{
	mUIImages.clear();
	mUITextureList.clear() ;
}

LLUIImagePtr LLUIImageList::getUIImageByID(const LLUUID& image_id, S32 priority)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// use id as image name
	std::string image_name = image_id.asString();

	// look for existing image
	uuid_ui_image_map_t::iterator found_it = mUIImages.find(image_name);
	if (found_it != mUIImages.end())
	{
		return found_it->second;
	}

	const BOOL use_mips = FALSE;
	const LLRect scale_rect = LLRect::null;
	const LLRect clip_rect = LLRect::null;
	return loadUIImageByID(image_id, use_mips, scale_rect, clip_rect, (LLViewerTexture::EBoostLevel)priority);
}

LLUIImagePtr LLUIImageList::getUIImage(const std::string& image_name, S32 priority)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// look for existing image
	uuid_ui_image_map_t::iterator found_it = mUIImages.find(image_name);
	if (found_it != mUIImages.end())
	{
		return found_it->second;
	}

	const BOOL use_mips = FALSE;
	const LLRect scale_rect = LLRect::null;
	const LLRect clip_rect = LLRect::null;
	return loadUIImageByName(image_name, image_name, use_mips, scale_rect, clip_rect, (LLViewerTexture::EBoostLevel)priority);
}

LLUIImagePtr LLUIImageList::loadUIImageByName(const std::string& name, const std::string& filename,
											  BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
											  LLUIImage::EScaleStyle scale_style)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (boost_priority == LLGLTexture::BOOST_NONE)
	{
		boost_priority = LLGLTexture::BOOST_UI;
	}
	LLViewerFetchedTexture* imagep = LLViewerTextureManager::getFetchedTextureFromFile(filename, FTT_LOCAL_FILE, MIPMAP_NO, boost_priority);
	return loadUIImage(imagep, name, use_mips, scale_rect, clip_rect, scale_style);
}

LLUIImagePtr LLUIImageList::loadUIImageByID(const LLUUID& id,
											BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
											LLUIImage::EScaleStyle scale_style)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (boost_priority == LLGLTexture::BOOST_NONE)
	{
		boost_priority = LLGLTexture::BOOST_UI;
	}
	LLViewerFetchedTexture* imagep = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, MIPMAP_NO, boost_priority);
	return loadUIImage(imagep, id.asString(), use_mips, scale_rect, clip_rect, scale_style);
}

LLUIImagePtr LLUIImageList::loadUIImage(LLViewerFetchedTexture* imagep, const std::string& name, BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect,
										LLUIImage::EScaleStyle scale_style)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if (!imagep) return NULL;

	imagep->setAddressMode(LLTexUnit::TAM_CLAMP);

	//don't compress UI images
	imagep->getGLTexture()->setAllowCompression(false);

	LLUIImagePtr new_imagep = new LLUIImage(name, imagep);
	new_imagep->setScaleStyle(scale_style);

	if (imagep->getBoostLevel() != LLGLTexture::BOOST_ICON &&
		imagep->getBoostLevel() != LLGLTexture::BOOST_PREVIEW)
	{
		// Don't add downloadable content into this list
		// all UI images are non-deletable and list does not support deletion
		imagep->setNoDelete();
		mUIImages.insert(std::make_pair(name, new_imagep));
		mUITextureList.push_back(imagep);
	}

	//Note:
	//Some other textures such as ICON also through this flow to be fetched.
	//But only UI textures need to set this callback.
	if(imagep->getBoostLevel() == LLGLTexture::BOOST_UI)
	{
		LLUIImageLoadData* datap = new LLUIImageLoadData;
		datap->mImageName = name;
		datap->mImageScaleRegion = scale_rect;
		datap->mImageClipRegion = clip_rect;

		imagep->setLoadedCallback(onUIImageLoaded, 0, FALSE, FALSE, datap, NULL);
	}
	return new_imagep;
}

LLUIImagePtr LLUIImageList::preloadUIImage(const std::string& name, const std::string& filename, BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLUIImage::EScaleStyle scale_style)
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// look for existing image
	uuid_ui_image_map_t::iterator found_it = mUIImages.find(name);
	if (found_it != mUIImages.end())
	{
		// image already loaded!
		LL_ERRS() << "UI Image " << name << " already loaded." << LL_ENDL;
	}

	return loadUIImageByName(name, filename, use_mips, scale_rect, clip_rect, LLGLTexture::BOOST_UI, scale_style);
}

//static 
void LLUIImageList::onUIImageLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* user_data )
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	if(!success || !user_data) 
	{
		return;
	}

	LLUIImageLoadData* image_datap = (LLUIImageLoadData*)user_data;
	std::string ui_image_name = image_datap->mImageName;
	LLRect scale_rect = image_datap->mImageScaleRegion;
	LLRect clip_rect = image_datap->mImageClipRegion;
	if (final)
	{
		delete image_datap;
	}

	LLUIImageList* instance = getInstance();

	uuid_ui_image_map_t::iterator found_it = instance->mUIImages.find(ui_image_name);
	if (found_it != instance->mUIImages.end())
	{
		LLUIImagePtr imagep = found_it->second;

		// for images grabbed from local files, apply clipping rectangle to restore original dimensions
		// from power-of-2 gl image
		if (success && imagep.notNull() && src_vi && (src_vi->getUrl().compare(0, 7, "file://")==0))
		{
			F32 full_width = (F32)src_vi->getFullWidth();
			F32 full_height = (F32)src_vi->getFullHeight();
			F32 clip_x = (F32)src_vi->getOriginalWidth() / full_width;
			F32 clip_y = (F32)src_vi->getOriginalHeight() / full_height;
			if (clip_rect != LLRect::null)
			{
				imagep->setClipRegion(LLRectf(llclamp((F32)clip_rect.mLeft / full_width, 0.f, 1.f),
											llclamp((F32)clip_rect.mTop / full_height, 0.f, 1.f),
											llclamp((F32)clip_rect.mRight / full_width, 0.f, 1.f),
											llclamp((F32)clip_rect.mBottom / full_height, 0.f, 1.f)));
			}
			else
			{
				imagep->setClipRegion(LLRectf(0.f, clip_y, clip_x, 0.f));
			}
			if (scale_rect != LLRect::null)
			{
				imagep->setScaleRegion(
					LLRectf(llclamp((F32)scale_rect.mLeft / (F32)imagep->getWidth(), 0.f, 1.f),
						llclamp((F32)scale_rect.mTop / (F32)imagep->getHeight(), 0.f, 1.f),
						llclamp((F32)scale_rect.mRight / (F32)imagep->getWidth(), 0.f, 1.f),
						llclamp((F32)scale_rect.mBottom / (F32)imagep->getHeight(), 0.f, 1.f)));
			}

			imagep->onImageLoaded();
		}
	}
}

namespace LLInitParam
{
	template<>
	struct TypeValues<LLUIImage::EScaleStyle> : public TypeValuesHelper<LLUIImage::EScaleStyle>
	{
		static void declareValues()
		{
			declare("scale_inner",	LLUIImage::SCALE_INNER);
			declare("scale_outer",	LLUIImage::SCALE_OUTER);
		}
	};
}

struct UIImageDeclaration : public LLInitParam::Block<UIImageDeclaration>
{
	Mandatory<std::string>		name;
	Optional<std::string>		file_name;
	Optional<bool>				preload;
	Optional<LLRect>			scale;
	Optional<LLRect>			clip;
	Optional<bool>				use_mips;
	Optional<LLUIImage::EScaleStyle> scale_type;

	UIImageDeclaration()
	:	name("name"),
		file_name("file_name"),
		preload("preload", false),
		scale("scale"),
		clip("clip"),
		use_mips("use_mips", false),
		scale_type("scale_type", LLUIImage::SCALE_INNER)
	{}
};

struct UIImageDeclarations : public LLInitParam::Block<UIImageDeclarations>
{
	Mandatory<S32>	version;
	Multiple<UIImageDeclaration> textures;

	UIImageDeclarations()
	:	version("version"),
		textures("texture")
	{}
};

bool LLUIImageList::initFromFile()
{
    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
	// Look for textures.xml in all the right places. Pass
	// constraint=LLDir::ALL_SKINS because we want to overlay textures.xml
	// from all the skins directories.
	std::vector<std::string> textures_paths =
		gDirUtilp->findSkinnedFilenames(LLDir::TEXTURES, "textures.xml", LLDir::ALL_SKINS);
	std::vector<std::string>::const_iterator pi(textures_paths.begin()), pend(textures_paths.end());
	if (pi == pend)
	{
		LL_WARNS() << "No textures.xml found in skins directories" << LL_ENDL;
		return false;
	}

	// The first (most generic) file gets special validations
	LLXMLNodePtr root;
	if (!LLXMLNode::parseFile(*pi, root, NULL))
	{
		LL_WARNS() << "Unable to parse UI image list file " << *pi << LL_ENDL;
		return false;
	}
	if (!root->hasAttribute("version"))
	{
		LL_WARNS() << "No valid version number in UI image list file " << *pi << LL_ENDL;
		return false;
	}

	UIImageDeclarations images;
	LLXUIParser parser;
	parser.readXUI(root, images, *pi);

	// add components defined in the rest of the skin paths
	while (++pi != pend)
	{
		LLXMLNodePtr update_root;
		if (LLXMLNode::parseFile(*pi, update_root, NULL))
		{
			parser.readXUI(update_root, images, *pi);
		}
	}

	if (!images.validateBlock()) return false;

	std::map<std::string, UIImageDeclaration> merged_declarations;
	for (LLInitParam::ParamIterator<UIImageDeclaration>::const_iterator image_it = images.textures.begin();
		image_it != images.textures.end();
		++image_it)
	{
		merged_declarations[image_it->name].overwriteFrom(*image_it);
	}

	enum e_decode_pass
	{
		PASS_DECODE_NOW,
		PASS_DECODE_LATER,
		NUM_PASSES
	};

	for (S32 cur_pass = PASS_DECODE_NOW; cur_pass < NUM_PASSES; cur_pass++)
	{
		for (std::map<std::string, UIImageDeclaration>::const_iterator image_it = merged_declarations.begin();
			image_it != merged_declarations.end();
			++image_it)
		{
			const UIImageDeclaration& image = image_it->second;
			std::string file_name = image.file_name.isProvided() ? image.file_name() : image.name();

			// load high priority textures on first pass (to kick off decode)
			enum e_decode_pass decode_pass = image.preload ? PASS_DECODE_NOW : PASS_DECODE_LATER;
			if (decode_pass != cur_pass)
			{
				continue;
			}
			preloadUIImage(image.name, file_name, image.use_mips, image.scale, image.clip, image.scale_type);
		}

		if (!gSavedSettings.getBOOL("NoPreload"))
		{
            if (cur_pass == PASS_DECODE_NOW)
            {
                // init fetching and decoding of preloaded images
                gTextureList.decodeAllImages(9.f);
            }
            else
            {
                // decodeAllImages needs two passes to refresh stats and priorities on second pass
                gTextureList.decodeAllImages(1.f);
            }
		}
	}
	return true;
}