diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.TablesByName.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.TablesByName.atx
new file mode 100644
index 000000000000..0f518f7a271f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.TablesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbindexes
new file mode 100644
index 000000000000..b02aa7510589
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtable
new file mode 100644
index 000000000000..39aa11c24edc
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtablx
new file mode 100644
index 000000000000..936805dcc60b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000001.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtable
new file mode 100644
index 000000000000..a0af90eaae1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtablx
new file mode 100644
index 000000000000..7c12c5681950
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000002.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbindexes
new file mode 100644
index 000000000000..58df68d525b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtable
new file mode 100644
index 000000000000..e7801afe8f9d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtablx
new file mode 100644
index 000000000000..2f80ed4fe5fe
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000003.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbindexes
new file mode 100644
index 000000000000..a4f334d7ba2a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtable
new file mode 100644
index 000000000000..5b77f9f26420
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtablx
new file mode 100644
index 000000000000..cd59dfbb52fa
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000004.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByName.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByName.atx
new file mode 100644
index 000000000000..c01991aa9c1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByParentTypeID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByParentTypeID.atx
new file mode 100644
index 000000000000..fed8da66b6a1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByParentTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByUUID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByUUID.atx
new file mode 100644
index 000000000000..8392ebcd41f9
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.CatItemTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbindexes
new file mode 100644
index 000000000000..bc887093f340
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtable
new file mode 100644
index 000000000000..9a9af20d7cd1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtablx
new file mode 100644
index 000000000000..cd82d543ccb6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000005.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByDestinationID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByDestinationID.atx
new file mode 100644
index 000000000000..8fcc74c8b7c7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByDestinationID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByOriginID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByOriginID.atx
new file mode 100644
index 000000000000..8a21e3378091
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByOriginID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByType.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByType.atx
new file mode 100644
index 000000000000..5143e308957b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.CatRelsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.FDO_UUID.atx
new file mode 100644
index 000000000000..c2af0446a52f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbindexes
new file mode 100644
index 000000000000..c608a88be082
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtable
new file mode 100644
index 000000000000..0b9171d2e217
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtablx
new file mode 100644
index 000000000000..431307d13c60
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000006.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByBackwardLabel.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByBackwardLabel.atx
new file mode 100644
index 000000000000..e8d13d4268fe
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByBackwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByDestItemTypeID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByDestItemTypeID.atx
new file mode 100644
index 000000000000..e2a366ba5cc1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByDestItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByForwardLabel.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByForwardLabel.atx
new file mode 100644
index 000000000000..5e8ff3f66ab2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByForwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByName.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByName.atx
new file mode 100644
index 000000000000..88108cf1ae90
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx
new file mode 100644
index 000000000000..33cb6e8c58da
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByUUID.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByUUID.atx
new file mode 100644
index 000000000000..5a6033e77a59
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.CatRelTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbindexes
new file mode 100644
index 000000000000..2a98c93adab6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtable
new file mode 100644
index 000000000000..2ac1a6e43ef6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtablx
new file mode 100644
index 000000000000..a6247b20b804
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000007.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbindexes
new file mode 100644
index 000000000000..8211a233625e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtable
new file mode 100644
index 000000000000..2eb61193296f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtablx
new file mode 100644
index 000000000000..7d06cc0fe240
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.spx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.spx
new file mode 100644
index 000000000000..6d236bdee5ca
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a00000009.spx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbindexes
new file mode 100644
index 000000000000..240144ef31ae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtable
new file mode 100644
index 000000000000..84260044f7fd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtablx
new file mode 100644
index 000000000000..b48fa99a8c38
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000a.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.freelist b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.freelist
new file mode 100644
index 000000000000..e8d168993dd6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtable
new file mode 100644
index 000000000000..e30d5838eff4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtablx
new file mode 100644
index 000000000000..7d097093679d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000b.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.blk_key_index.atx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.blk_key_index.atx
new file mode 100644
index 000000000000..a97b98ff4700
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.blk_key_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbindexes
new file mode 100644
index 000000000000..031560094ed7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtable
new file mode 100644
index 000000000000..21e020fd37bf
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtablx
new file mode 100644
index 000000000000..fdab6ccd0fde
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000c.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbindexes b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbindexes
new file mode 100644
index 000000000000..142048fb144f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtable b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtable
new file mode 100644
index 000000000000..b94f6bb43e15
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtablx b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtablx
new file mode 100644
index 000000000000..b9e6995672ad
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/a0000000d.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/gdb b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/gdb
new file mode 100644
index 000000000000..a786e127004d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/gdb differ
diff --git a/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/timestamps b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/timestamps
new file mode 100644
index 000000000000..9de55b8e5aa2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb/timestamps differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.TablesByName.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.TablesByName.atx
new file mode 100644
index 000000000000..b809dc174e13
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.TablesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbindexes
new file mode 100644
index 000000000000..b02aa7510589
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtable
new file mode 100644
index 000000000000..556cf5ef7901
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtablx
new file mode 100644
index 000000000000..66911b806aae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000001.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtable
new file mode 100644
index 000000000000..a0af90eaae1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtablx
new file mode 100644
index 000000000000..7c12c5681950
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000002.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbindexes
new file mode 100644
index 000000000000..58df68d525b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtable
new file mode 100644
index 000000000000..ea35310fe368
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtablx
new file mode 100644
index 000000000000..861811b21cfb
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000003.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.CatItemsByPhysicalName.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.CatItemsByPhysicalName.atx
new file mode 100644
index 000000000000..c280648d3b44
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.CatItemsByPhysicalName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.freelist b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.freelist
new file mode 100644
index 000000000000..273470c5754f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbindexes
new file mode 100644
index 000000000000..a4f334d7ba2a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtable
new file mode 100644
index 000000000000..a20e01c323b9
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtablx
new file mode 100644
index 000000000000..368220b6d37e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.spx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.spx
new file mode 100644
index 000000000000..944cb05feeda
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000004.spx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByName.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByName.atx
new file mode 100644
index 000000000000..6055e63d1770
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByParentTypeID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByParentTypeID.atx
new file mode 100644
index 000000000000..c1c65c4f79f2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByParentTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByUUID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByUUID.atx
new file mode 100644
index 000000000000..8e1903699b1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.CatItemTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbindexes
new file mode 100644
index 000000000000..bc887093f340
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtable
new file mode 100644
index 000000000000..57f1fb88b85f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtablx
new file mode 100644
index 000000000000..ab1f2d304e3a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000005.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByDestinationID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByDestinationID.atx
new file mode 100644
index 000000000000..b102e220825c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByDestinationID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByOriginID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByOriginID.atx
new file mode 100644
index 000000000000..2b9a3acb76e2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByOriginID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByType.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByType.atx
new file mode 100644
index 000000000000..c16389e728f3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.CatRelsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.FDO_UUID.atx
new file mode 100644
index 000000000000..bad1aa860de5
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbindexes
new file mode 100644
index 000000000000..c608a88be082
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtable
new file mode 100644
index 000000000000..8c1524314e68
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtablx
new file mode 100644
index 000000000000..7cc0413957f6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000006.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByBackwardLabel.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByBackwardLabel.atx
new file mode 100644
index 000000000000..838d1c6d393e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByBackwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByDestItemTypeID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByDestItemTypeID.atx
new file mode 100644
index 000000000000..0d75fb7df19e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByDestItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByForwardLabel.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByForwardLabel.atx
new file mode 100644
index 000000000000..36eeea63e0e6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByForwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByName.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByName.atx
new file mode 100644
index 000000000000..c4046b406157
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx
new file mode 100644
index 000000000000..9c26599a8436
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByUUID.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByUUID.atx
new file mode 100644
index 000000000000..41eba5828189
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.CatRelTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbindexes
new file mode 100644
index 000000000000..2a98c93adab6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtable
new file mode 100644
index 000000000000..e34b91812105
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtablx
new file mode 100644
index 000000000000..316722e09bf2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000007.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable
new file mode 100644
index 000000000000..c8b9ae2b32c8
--- /dev/null
+++ b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<db_schemas>
+  <db_schema>
+    <table name="dem_1bit_ScalePixelValue">
+      <indices>
+        <index name="FDO_OID">
+          <field name="OID"/>
+        </index>
+      </indices>
+      <tolerance_xy>0x3E434A8A5E4E45C1</tolerance_xy>
+      <domain_minx>0xC0790000       0</domain_minx>
+      <domain_maxx>0x4078FFFFFFFFFFFC</domain_maxx>
+      <domain_miny>0xC0790000       0</domain_miny>
+      <domain_maxy>0x4078FFFFFFFFFFFC</domain_maxy>
+      <sp_ind_grid_size_0>0x       0       0</sp_ind_grid_size_0>
+      <sp_ind_grid_count>1</sp_ind_grid_count>
+    </table>
+  </db_schema>
+</db_schemas>
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.FDO_OID.gdbtabidx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.FDO_OID.gdbtabidx
new file mode 100644
index 000000000000..31002a2ef011
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.FDO_OID.gdbtabidx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.cdf b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.cdf
new file mode 100644
index 000000000000..28508f802cc5
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a0000004f.gdbtable.cdf differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbindexes
new file mode 100644
index 000000000000..240144ef31ae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtable
new file mode 100644
index 000000000000..d5ee79cc6414
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtablx
new file mode 100644
index 000000000000..b48fa99a8c38
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000050.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.freelist b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.freelist
new file mode 100644
index 000000000000..e8d168993dd6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtable
new file mode 100644
index 000000000000..8bff3edab090
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtablx
new file mode 100644
index 000000000000..fc5ec35b3e67
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000051.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.band_index.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.band_index.atx
new file mode 100644
index 000000000000..5792f523b51a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.band_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.blk_key_index.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.blk_key_index.atx
new file mode 100644
index 000000000000..8943ed345530
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.blk_key_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.col_index.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.col_index.atx
new file mode 100644
index 000000000000..a0ffa8a81bad
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.col_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbindexes
new file mode 100644
index 000000000000..031560094ed7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtable
new file mode 100644
index 000000000000..a00b9c5808ce
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtablx
new file mode 100644
index 000000000000..2f134dad77d1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.row_index.atx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.row_index.atx
new file mode 100644
index 000000000000..e3c0c26cfe7e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000052.row_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbindexes b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbindexes
new file mode 100644
index 000000000000..142048fb144f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtable b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtable
new file mode 100644
index 000000000000..8948c07589d4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtablx b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtablx
new file mode 100644
index 000000000000..b9e6995672ad
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/dem_1bit_ScalePixelValue.gdb/a00000053.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.TablesByName.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.TablesByName.atx
new file mode 100644
index 000000000000..b508febb9945
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.TablesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbindexes
new file mode 100644
index 000000000000..b02aa7510589
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtable
new file mode 100644
index 000000000000..70525ab59499
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtablx
new file mode 100644
index 000000000000..887096e3328e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000001.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtable
new file mode 100644
index 000000000000..a0af90eaae1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtablx
new file mode 100644
index 000000000000..7c12c5681950
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000002.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbindexes
new file mode 100644
index 000000000000..58df68d525b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtable
new file mode 100644
index 000000000000..8a5cdad5df4a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtablx
new file mode 100644
index 000000000000..2f80ed4fe5fe
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000003.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByPhysicalName.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByPhysicalName.atx
new file mode 100644
index 000000000000..74df5486b83f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByPhysicalName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByType.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByType.atx
new file mode 100644
index 000000000000..22f3bc1dc4cd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.CatItemsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.FDO_UUID.atx
new file mode 100644
index 000000000000..667de8b4967b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbindexes
new file mode 100644
index 000000000000..a4f334d7ba2a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtable
new file mode 100644
index 000000000000..a97854051ce8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtablx
new file mode 100644
index 000000000000..93fec31b61e3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.horizon b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.horizon
new file mode 100644
index 000000000000..b64b92356a70
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.horizon differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.spx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.spx
new file mode 100644
index 000000000000..6d236bdee5ca
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000004.spx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByName.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByName.atx
new file mode 100644
index 000000000000..5f5004620ba9
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByParentTypeID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByParentTypeID.atx
new file mode 100644
index 000000000000..269f1f31a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByParentTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByUUID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByUUID.atx
new file mode 100644
index 000000000000..44d74cc880f4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.CatItemTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbindexes
new file mode 100644
index 000000000000..bc887093f340
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtable
new file mode 100644
index 000000000000..bf93ec49a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtablx
new file mode 100644
index 000000000000..4d8932a45d48
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000005.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByDestinationID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByDestinationID.atx
new file mode 100644
index 000000000000..f3b659ac7091
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByDestinationID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByOriginID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByOriginID.atx
new file mode 100644
index 000000000000..80df1d23b0c3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByOriginID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByType.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByType.atx
new file mode 100644
index 000000000000..5143e308957b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.CatRelsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.FDO_UUID.atx
new file mode 100644
index 000000000000..8a80ea06050f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbindexes
new file mode 100644
index 000000000000..c608a88be082
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtable
new file mode 100644
index 000000000000..d3ccf1c026b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtablx
new file mode 100644
index 000000000000..431307d13c60
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000006.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByBackwardLabel.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByBackwardLabel.atx
new file mode 100644
index 000000000000..8797338e7a9c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByBackwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByDestItemTypeID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByDestItemTypeID.atx
new file mode 100644
index 000000000000..47d2132ee8b7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByDestItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByForwardLabel.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByForwardLabel.atx
new file mode 100644
index 000000000000..233026824883
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByForwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByName.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByName.atx
new file mode 100644
index 000000000000..70ed36c3fea8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx
new file mode 100644
index 000000000000..139b478cc0a4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByUUID.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByUUID.atx
new file mode 100644
index 000000000000..dea48d3ebdbb
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.CatRelTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbindexes
new file mode 100644
index 000000000000..2a98c93adab6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtable
new file mode 100644
index 000000000000..a25ba57b9184
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtablx
new file mode 100644
index 000000000000..bf096e13d28f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000007.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbindexes
new file mode 100644
index 000000000000..8211a233625e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtable
new file mode 100644
index 000000000000..679dc7e5cb49
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtablx
new file mode 100644
index 000000000000..b116630f70d1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.horizon b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.horizon
new file mode 100644
index 000000000000..18907a331eac
--- /dev/null
+++ b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.horizon
@@ -0,0 +1 @@
+ï{~܈SÁ•Y5ÉÇcÁï{~lYWA•Y5ÉÇcA
\ No newline at end of file
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.spx b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.spx
new file mode 100644
index 000000000000..6d236bdee5ca
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a00000009.spx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbindexes
new file mode 100644
index 000000000000..240144ef31ae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtable
new file mode 100644
index 000000000000..2ffa16e397a2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtablx
new file mode 100644
index 000000000000..b48fa99a8c38
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000a.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.freelist b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.freelist
new file mode 100644
index 000000000000..e8d168993dd6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtable
new file mode 100644
index 000000000000..834acd28fc87
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtablx
new file mode 100644
index 000000000000..91d7478a2b8c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000b.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.band_index.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.band_index.atx
new file mode 100644
index 000000000000..870a5e390e91
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.band_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.blk_key_index.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.blk_key_index.atx
new file mode 100644
index 000000000000..3aef81009529
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.blk_key_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.col_index.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.col_index.atx
new file mode 100644
index 000000000000..2ba7bf150642
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.col_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbindexes
new file mode 100644
index 000000000000..031560094ed7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtable
new file mode 100644
index 000000000000..e012cc3df9b7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtablx
new file mode 100644
index 000000000000..146f894185c8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.row_index.atx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.row_index.atx
new file mode 100644
index 000000000000..2ba7bf150642
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000c.row_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbindexes b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbindexes
new file mode 100644
index 000000000000..142048fb144f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtable b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtable
new file mode 100644
index 000000000000..e1cc3a70f7fa
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtablx b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtablx
new file mode 100644
index 000000000000..b9e6995672ad
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/a0000000d.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/gdb b/autotest/gdrivers/data/filegdb/int8.gdb/gdb
new file mode 100644
index 000000000000..a786e127004d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/gdb differ
diff --git a/autotest/gdrivers/data/filegdb/int8.gdb/timestamps b/autotest/gdrivers/data/filegdb/int8.gdb/timestamps
new file mode 100644
index 000000000000..862c08a4950f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/int8.gdb/timestamps differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.TablesByName.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.TablesByName.atx
new file mode 100644
index 000000000000..d5b33644e4ab
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.TablesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbindexes
new file mode 100644
index 000000000000..b02aa7510589
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtable
new file mode 100644
index 000000000000..e99dbe25323e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtablx
new file mode 100644
index 000000000000..6ad8b8ccfa85
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000001.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtable
new file mode 100644
index 000000000000..a0af90eaae1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtablx
new file mode 100644
index 000000000000..7c12c5681950
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000002.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbindexes
new file mode 100644
index 000000000000..58df68d525b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtable
new file mode 100644
index 000000000000..d2447c437693
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtablx
new file mode 100644
index 000000000000..2f80ed4fe5fe
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000003.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByPhysicalName.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByPhysicalName.atx
new file mode 100644
index 000000000000..6fc0edaf2ce8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByPhysicalName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByType.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByType.atx
new file mode 100644
index 000000000000..22f3bc1dc4cd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.CatItemsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.FDO_UUID.atx
new file mode 100644
index 000000000000..3b5c1c9dd9ee
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbindexes
new file mode 100644
index 000000000000..a4f334d7ba2a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtable
new file mode 100644
index 000000000000..5f431921bd0c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtablx
new file mode 100644
index 000000000000..93fec31b61e3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.horizon b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.horizon
new file mode 100644
index 000000000000..b64b92356a70
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.horizon differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.spx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.spx
new file mode 100644
index 000000000000..920fd545043e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000004.spx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByName.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByName.atx
new file mode 100644
index 000000000000..5f5004620ba9
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByParentTypeID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByParentTypeID.atx
new file mode 100644
index 000000000000..269f1f31a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByParentTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByUUID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByUUID.atx
new file mode 100644
index 000000000000..44d74cc880f4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.CatItemTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbindexes
new file mode 100644
index 000000000000..bc887093f340
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtable
new file mode 100644
index 000000000000..bf93ec49a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtablx
new file mode 100644
index 000000000000..4d8932a45d48
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000005.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByDestinationID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByDestinationID.atx
new file mode 100644
index 000000000000..6c78976086ea
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByDestinationID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByOriginID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByOriginID.atx
new file mode 100644
index 000000000000..80df1d23b0c3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByOriginID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByType.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByType.atx
new file mode 100644
index 000000000000..5143e308957b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.CatRelsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.FDO_UUID.atx
new file mode 100644
index 000000000000..b86804c03ad6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbindexes
new file mode 100644
index 000000000000..c608a88be082
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtable
new file mode 100644
index 000000000000..09e5f09c72fb
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtablx
new file mode 100644
index 000000000000..431307d13c60
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000006.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByBackwardLabel.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByBackwardLabel.atx
new file mode 100644
index 000000000000..8797338e7a9c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByBackwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByDestItemTypeID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByDestItemTypeID.atx
new file mode 100644
index 000000000000..47d2132ee8b7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByDestItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByForwardLabel.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByForwardLabel.atx
new file mode 100644
index 000000000000..233026824883
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByForwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByName.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByName.atx
new file mode 100644
index 000000000000..70ed36c3fea8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx
new file mode 100644
index 000000000000..139b478cc0a4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByUUID.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByUUID.atx
new file mode 100644
index 000000000000..dea48d3ebdbb
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.CatRelTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbindexes
new file mode 100644
index 000000000000..2a98c93adab6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtable
new file mode 100644
index 000000000000..a25ba57b9184
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtablx
new file mode 100644
index 000000000000..bf096e13d28f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000007.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbindexes
new file mode 100644
index 000000000000..8211a233625e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtable
new file mode 100644
index 000000000000..2f57afe612e0
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtablx
new file mode 100644
index 000000000000..914f32e6f5a4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.horizon b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.horizon
new file mode 100644
index 000000000000..6b4ea069980c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.horizon differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.spx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.spx
new file mode 100644
index 000000000000..6d236bdee5ca
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a00000009.spx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbindexes
new file mode 100644
index 000000000000..240144ef31ae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtable
new file mode 100644
index 000000000000..ad6992afd433
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtablx
new file mode 100644
index 000000000000..b48fa99a8c38
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000a.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.freelist b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.freelist
new file mode 100644
index 000000000000..58c2e81df609
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtable
new file mode 100644
index 000000000000..3dfde046d7d1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtablx
new file mode 100644
index 000000000000..f79309ac9d59
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000b.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.band_index.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.band_index.atx
new file mode 100644
index 000000000000..2ea17a12cc00
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.band_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.blk_key_index.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.blk_key_index.atx
new file mode 100644
index 000000000000..63dfd80b2d64
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.blk_key_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.col_index.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.col_index.atx
new file mode 100644
index 000000000000..71f5e80927be
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.col_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbindexes
new file mode 100644
index 000000000000..031560094ed7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtable
new file mode 100644
index 000000000000..397f10b528fd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtablx
new file mode 100644
index 000000000000..b1a7e93b9319
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.row_index.atx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.row_index.atx
new file mode 100644
index 000000000000..709fc8c55c36
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000c.row_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.freelist b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.freelist
new file mode 100644
index 000000000000..e8d168993dd6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbindexes
new file mode 100644
index 000000000000..142048fb144f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtable
new file mode 100644
index 000000000000..3875a6ef80d1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtablx
new file mode 100644
index 000000000000..ac6a3def3cc4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000d.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbindexes b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtable b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtable
new file mode 100644
index 000000000000..785f9d6ad872
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtablx b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtablx
new file mode 100644
index 000000000000..e446ce106ea3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/a0000000e.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/gdb b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/gdb
new file mode 100644
index 000000000000..a786e127004d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/gdb differ
diff --git a/autotest/gdrivers/data/filegdb/lu_4bit.gdb/timestamps b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/timestamps
new file mode 100644
index 000000000000..293cdffd1d09
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/lu_4bit.gdb/timestamps differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.TablesByName.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.TablesByName.atx
new file mode 100644
index 000000000000..79d3153cb959
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.TablesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbindexes
new file mode 100644
index 000000000000..b02aa7510589
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtable
new file mode 100644
index 000000000000..3c5b1110d377
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtablx
new file mode 100644
index 000000000000..0c92e11f01a1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000001.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtable
new file mode 100644
index 000000000000..a0af90eaae1f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtablx
new file mode 100644
index 000000000000..7c12c5681950
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000002.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbindexes
new file mode 100644
index 000000000000..58df68d525b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtable
new file mode 100644
index 000000000000..8a5cdad5df4a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtablx
new file mode 100644
index 000000000000..2f80ed4fe5fe
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000003.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByPhysicalName.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByPhysicalName.atx
new file mode 100644
index 000000000000..74df5486b83f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByPhysicalName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByType.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByType.atx
new file mode 100644
index 000000000000..22f3bc1dc4cd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.CatItemsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.FDO_UUID.atx
new file mode 100644
index 000000000000..667de8b4967b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbindexes
new file mode 100644
index 000000000000..a4f334d7ba2a
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtable
new file mode 100644
index 000000000000..0f8328f90c96
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtablx
new file mode 100644
index 000000000000..93fec31b61e3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.horizon b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.horizon
new file mode 100644
index 000000000000..b64b92356a70
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.horizon differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.spx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.spx
new file mode 100644
index 000000000000..6d236bdee5ca
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000004.spx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByName.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByName.atx
new file mode 100644
index 000000000000..5f5004620ba9
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByParentTypeID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByParentTypeID.atx
new file mode 100644
index 000000000000..269f1f31a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByParentTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByUUID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByUUID.atx
new file mode 100644
index 000000000000..44d74cc880f4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.CatItemTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbindexes
new file mode 100644
index 000000000000..bc887093f340
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtable
new file mode 100644
index 000000000000..bf93ec49a465
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtablx
new file mode 100644
index 000000000000..4d8932a45d48
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000005.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByDestinationID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByDestinationID.atx
new file mode 100644
index 000000000000..f3b659ac7091
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByDestinationID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByOriginID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByOriginID.atx
new file mode 100644
index 000000000000..80df1d23b0c3
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByOriginID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByType.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByType.atx
new file mode 100644
index 000000000000..5143e308957b
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.CatRelsByType.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.FDO_UUID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.FDO_UUID.atx
new file mode 100644
index 000000000000..8a80ea06050f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.FDO_UUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbindexes
new file mode 100644
index 000000000000..c608a88be082
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtable
new file mode 100644
index 000000000000..d3ccf1c026b4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtablx
new file mode 100644
index 000000000000..431307d13c60
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000006.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByBackwardLabel.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByBackwardLabel.atx
new file mode 100644
index 000000000000..8797338e7a9c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByBackwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByDestItemTypeID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByDestItemTypeID.atx
new file mode 100644
index 000000000000..47d2132ee8b7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByDestItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByForwardLabel.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByForwardLabel.atx
new file mode 100644
index 000000000000..233026824883
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByForwardLabel.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByName.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByName.atx
new file mode 100644
index 000000000000..70ed36c3fea8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByName.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx
new file mode 100644
index 000000000000..139b478cc0a4
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByOriginItemTypeID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByUUID.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByUUID.atx
new file mode 100644
index 000000000000..dea48d3ebdbb
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.CatRelTypesByUUID.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbindexes
new file mode 100644
index 000000000000..2a98c93adab6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtable
new file mode 100644
index 000000000000..a25ba57b9184
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtablx
new file mode 100644
index 000000000000..bf096e13d28f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000007.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbindexes
new file mode 100644
index 000000000000..8211a233625e
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtable
new file mode 100644
index 000000000000..37624b1fc924
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtablx
new file mode 100644
index 000000000000..b116630f70d1
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.horizon b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.horizon
new file mode 100644
index 000000000000..18907a331eac
--- /dev/null
+++ b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.horizon
@@ -0,0 +1 @@
+ï{~܈SÁ•Y5ÉÇcÁï{~lYWA•Y5ÉÇcA
\ No newline at end of file
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.spx b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.spx
new file mode 100644
index 000000000000..0de47208061c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a00000009.spx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbindexes
new file mode 100644
index 000000000000..240144ef31ae
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtable
new file mode 100644
index 000000000000..2ffa16e397a2
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtablx
new file mode 100644
index 000000000000..b48fa99a8c38
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000a.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.freelist b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.freelist
new file mode 100644
index 000000000000..e8d168993dd6
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtable
new file mode 100644
index 000000000000..834acd28fc87
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtablx
new file mode 100644
index 000000000000..91d7478a2b8c
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000b.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.band_index.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.band_index.atx
new file mode 100644
index 000000000000..870a5e390e91
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.band_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.blk_key_index.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.blk_key_index.atx
new file mode 100644
index 000000000000..3aef81009529
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.blk_key_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.col_index.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.col_index.atx
new file mode 100644
index 000000000000..2ba7bf150642
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.col_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbindexes
new file mode 100644
index 000000000000..031560094ed7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtable
new file mode 100644
index 000000000000..e012cc3df9b7
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtablx
new file mode 100644
index 000000000000..146f894185c8
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.row_index.atx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.row_index.atx
new file mode 100644
index 000000000000..2ba7bf150642
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000c.row_index.atx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbindexes
new file mode 100644
index 000000000000..142048fb144f
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtable
new file mode 100644
index 000000000000..e1cc3a70f7fa
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtablx
new file mode 100644
index 000000000000..b9e6995672ad
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000d.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.freelist b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.freelist
new file mode 100644
index 000000000000..eddbb452a9b5
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.freelist differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbindexes b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbindexes
new file mode 100644
index 000000000000..0449ced6cb12
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbindexes differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtable b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtable
new file mode 100644
index 000000000000..dadbfcb2a9bd
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtable differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtablx b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtablx
new file mode 100644
index 000000000000..bb6a6b0e06b0
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/a0000000e.gdbtablx differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/gdb b/autotest/gdrivers/data/filegdb/rat.gdb/gdb
new file mode 100644
index 000000000000..a786e127004d
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/gdb differ
diff --git a/autotest/gdrivers/data/filegdb/rat.gdb/timestamps b/autotest/gdrivers/data/filegdb/rat.gdb/timestamps
new file mode 100644
index 000000000000..333cbccd94cc
Binary files /dev/null and b/autotest/gdrivers/data/filegdb/rat.gdb/timestamps differ
diff --git a/autotest/gdrivers/openfilegdb.py b/autotest/gdrivers/openfilegdb.py
new file mode 100755
index 000000000000..2448300bd510
--- /dev/null
+++ b/autotest/gdrivers/openfilegdb.py
@@ -0,0 +1,373 @@
+#!/usr/bin/env pytest
+# -*- coding: utf-8 -*-
+###############################################################################
+# Project:  GDAL/OGR Test Suite
+# Purpose:  OpenFileGDB raster driver testing.
+# Author:   Even Rouault <even dot rouault at spatialys.com>
+#
+###############################################################################
+# Copyright (c) 2023, Even Rouault <even dot rouault at spatialys.com>
+#
+# 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 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.
+###############################################################################
+
+import struct
+
+import gdaltest
+import pytest
+
+from osgeo import gdal
+
+pytestmark = pytest.mark.require_driver("OpenFileGDB")
+
+
+###############################################################################
+# Open dataset with subdatasets
+
+
+def test_openfilegb_raster_subdatasets():
+
+    ds = gdal.Open("data/filegdb/gdal_test_data.gdb.zip")
+    assert ds
+    assert len(ds.GetSubDatasets()) == 44
+    ds = gdal.Open(ds.GetSubDatasets()[0][0])
+    assert ds
+    assert ds.RasterXSize == 20
+    assert ds.RasterYSize == 20
+
+    ds = gdal.OpenEx(
+        "data/filegdb/gdal_test_data.gdb.zip", gdal.OF_RASTER | gdal.OF_VECTOR
+    )
+    assert ds
+
+    ds = gdal.OpenEx("data/filegdb/gdal_test_data.gdb.zip", gdal.OF_VECTOR)
+    assert ds is None
+
+
+###############################################################################
+# Test various band types
+
+
+@pytest.mark.parametrize(
+    "name,datatype,checksum",
+    [
+        ("byte_lz77", gdal.GDT_Byte, 4672),
+        ("byte_lzw", gdal.GDT_Byte, 4672),  # no compression actually
+        ("uint16_lz77", gdal.GDT_UInt16, 4672),
+        ("uint16_lzw", gdal.GDT_UInt16, 4672),  # no compression actually
+        ("int16_lz77", gdal.GDT_Int16, 4672),
+        ("int16_lzw", gdal.GDT_Int16, 4672),  # no compression actually
+        ("uint32_lz77", gdal.GDT_UInt32, 4672),
+        ("uint32_lzw", gdal.GDT_UInt32, 4672),  # no compression actually
+        ("int32_lz77", gdal.GDT_Int32, 4672),
+        ("int32_lzw", gdal.GDT_Int32, 4672),  # no compression actually
+        ("float32_lz77", gdal.GDT_Float32, 4672),
+        ("float32_lzw", gdal.GDT_Float32, 4672),  # no compression actually
+        ("float64_lz77", gdal.GDT_Float64, 4672),
+    ],
+)
+def test_openfilegb_raster_band_types(name, datatype, checksum):
+
+    ds = gdal.Open("OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:" + name)
+    assert ds
+    assert ds.GetRasterBand(1).DataType == datatype
+    assert ds.GetRasterBand(1).Checksum() == checksum
+
+
+###############################################################################
+# Test mask band
+
+
+def test_openfilegb_raster_mask_band():
+
+    ds = gdal.Open("OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:byte_lz77")
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 4873
+    assert ds.GetRasterBand(1).Checksum() == 4672
+
+    ds = gdal.Open("OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:byte_lz77")
+    assert ds.GetRasterBand(1).Checksum() == 4672
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 4873
+
+
+###############################################################################
+# Test multi band
+
+
+def test_openfilegb_raster_multi_band():
+
+    ds = gdal.Open("OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:small_world_lz77")
+    assert ds.RasterXSize == 400
+    assert ds.RasterYSize == 200
+    assert ds.RasterCount == 3
+    assert ds.GetMetadata("IMAGE_STRUCTURE") == {
+        "COMPRESSION": "DEFLATE",
+        "INTERLEAVE": "BAND",
+    }
+    assert [ds.GetRasterBand(i + 1).Checksum() for i in range(3)] == [
+        30111,
+        32302,
+        40026,
+    ]
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 64269
+    assert ds.GetRasterBand(2).GetMaskBand().Checksum() == 64269
+    assert ds.GetRasterBand(3).GetMaskBand().Checksum() == 64269
+    band = ds.GetRasterBand(1)
+    assert band.GetOverviewCount() == 3
+    assert band.GetOverview(-1) is None
+    assert band.GetOverview(3) is None
+    assert band.GetOverview(0).Checksum() == 7309
+    assert band.GetOverview(0).GetMaskFlags() == gdal.GMF_PER_DATASET
+    assert band.GetOverview(0).GetMaskBand().Checksum() == 48827
+    band = ds.GetRasterBand(2)
+    assert band.GetOverviewCount() == 3
+    assert band.GetOverview(-1) is None
+    assert band.GetOverview(3) is None
+    assert band.GetOverview(0).Checksum() == 7850
+    assert band.GetOverview(0).GetMaskFlags() == gdal.GMF_PER_DATASET
+    assert band.GetOverview(0).GetMaskBand().Checksum() == 48827
+
+
+###############################################################################
+# Test 1-bit depth
+
+
+def test_openfilegb_raster_one_bit():
+
+    ds = gdal.Open("data/filegdb/dem_1bit_ScalePixelValue.gdb")
+    assert ds.GetRasterBand(1).GetMetadataItem("NBITS", "IMAGE_STRUCTURE") == "1"
+    assert ds.GetRasterBand(1).Checksum() == 17197
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 29321
+
+
+###############################################################################
+# Test 4-bit depth and a rasterband_id == 2
+
+
+def test_openfilegb_raster_four_bit():
+
+    ds = gdal.Open("data/filegdb/lu_4bit.gdb")
+    assert ds.GetRasterBand(1).GetMetadataItem("NBITS", "IMAGE_STRUCTURE") == "4"
+    assert ds.GetRasterBand(1).Checksum() == 40216
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 42040
+
+
+###############################################################################
+# Test JPEG compression
+
+
+def test_openfilegb_raster_jpeg():
+
+    ds = gdal.Open("OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:small_world_jpeg")
+    assert ds.RasterXSize == 400
+    assert ds.RasterYSize == 200
+    assert ds.RasterCount == 3
+    if gdal.GetDriverByName("JPEG") is not None:
+        assert ds.GetMetadata("IMAGE_STRUCTURE") == {
+            "COMPRESSION": "JPEG",
+            "INTERLEAVE": "BAND",
+            "JPEG_QUALITY": "75",
+        }
+
+    if gdal.GetDriverByName("JPEG") is None:
+        with gdaltest.error_handler():
+            assert ds.GetRasterBand(1).Checksum() == -1
+    else:
+        assert [ds.GetRasterBand(i + 1).Checksum() for i in range(3)] == [
+            23495,
+            18034,
+            36999,
+        ]
+        assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 64269
+
+
+###############################################################################
+# Test JPEG2000 compression
+
+
+def test_openfilegb_raster_jpeg2000():
+
+    ds = gdal.Open(
+        "OpenFileGDB:data/filegdb/gdal_test_data.gdb.zip:small_world_jpeg2000"
+    )
+    assert ds.RasterXSize == 400
+    assert ds.RasterYSize == 200
+    assert ds.RasterCount == 3
+    assert ds.GetMetadata("IMAGE_STRUCTURE") == {
+        "COMPRESSION": "JPEG2000",
+        "INTERLEAVE": "BAND",
+    }
+
+    if gdal.GetDriverByName("JP2OpenJPEG") is None:
+        pytest.skip("JP2OpenJPEG driver not available")
+
+    assert [ds.GetRasterBand(i + 1).Checksum() for i in range(3)] != [-1, -1, -1]
+    assert ds.GetRasterBand(1).GetMaskBand().Checksum() == 64269
+
+
+###############################################################################
+# Open dataset with Int8 data type
+
+
+def test_openfilegb_raster_int8():
+
+    ds = gdal.Open("data/filegdb/int8.gdb")
+    assert ds
+    assert ds.RasterXSize == 20
+    assert ds.RasterYSize == 20
+    assert ds.RasterCount == 1
+    assert ds.GetGeoTransform() == (440720, 60, 0, 3751320, 0, -60)
+    assert ds.GetSpatialRef().GetAuthorityCode(None) == "26711"
+    assert ds.GetMetadata("IMAGE_STRUCTURE") == {"COMPRESSION": "DEFLATE"}
+    assert ds.GetMetadata("xml:definition")[0].startswith("<DERasterDataset ")
+    assert ds.GetMetadata("xml:documentation")[0].startswith("<metadata ")
+    band = ds.GetRasterBand(1)
+    assert band.DataType == gdal.GDT_Int8
+    assert band.Checksum() == 1046
+    assert band.ComputeRasterMinMax(False) == (-124, 123)
+    assert band.GetMaskFlags() == gdal.GMF_PER_DATASET
+    assert band.GetMaskBand().ComputeRasterMinMax(False) == (255, 255)
+    assert band.GetDefaultRAT() is None
+    assert band.GetMetadata() == {}
+
+
+###############################################################################
+# Open dataset with statistics in fras_aux_ table
+
+
+def test_openfilegb_raster_statistics():
+
+    ds = gdal.Open("data/filegdb/NCH_ES_WATER_LOGGING_HAZARD.gdb")
+    assert ds
+    assert ds.RasterXSize == 18731
+    assert ds.RasterYSize == 19320
+    assert ds.RasterCount == 1
+    band = ds.GetRasterBand(1)
+    assert band.DataType == gdal.GDT_Float32
+    assert band.GetMetadata() == {
+        "STATISTICS_COVARIANCES": "14.47671828699574",
+        "STATISTICS_MAXIMUM": "23.318840026855",
+        "STATISTICS_MEAN": "9.685811623136",
+        "STATISTICS_MINIMUM": "-20.907217025757",
+        "STATISTICS_SKIPFACTORX": "1",
+        "STATISTICS_SKIPFACTORY": "1",
+        "STATISTICS_STDDEV": "3.804828286138",
+    }
+    assert band.GetNoDataValue() == pytest.approx(3.4e38, rel=1e-7)
+    assert band.GetMaskFlags() == gdal.GMF_NODATA
+    assert band.GetOverviewCount() == 6
+    assert band.GetOverview(-1) is None
+    assert band.GetOverview(6) is None
+    assert band.ReadRaster(0, 0, 1, 1) == struct.pack("f", band.GetNoDataValue())
+
+
+###############################################################################
+# Open dataset with RAT
+
+
+def test_openfilegb_raster_rat():
+
+    ds = gdal.Open("data/filegdb/rat.gdb")
+    assert ds
+    assert ds.RasterXSize == 20
+    assert ds.RasterYSize == 20
+    assert ds.RasterCount == 1
+    assert ds.GetGeoTransform() == (440720, 60, 0, 3751320, 0, -60)
+    assert ds.GetSpatialRef().GetAuthorityCode(None) == "26711"
+    assert ds.GetMetadata("IMAGE_STRUCTURE") == {"COMPRESSION": "DEFLATE"}
+    band = ds.GetRasterBand(1)
+    assert band.DataType == gdal.GDT_Int8
+    assert band.Checksum() == 1046
+
+    # Get RAT
+    rat = band.GetDefaultRAT()
+    assert rat
+    assert rat.GetColumnCount() == 3
+    assert rat.GetRowCount() == 18
+
+    # Get RAT again
+    rat = band.GetDefaultRAT()
+    assert rat
+    assert rat.GetColumnCount() == 3
+    assert rat.GetRowCount() == 18
+
+    # Not completely sure if the GDAL API guarantees that a cloned RAT is
+    # stanalone, but that's how we have implemented it
+    rat = rat.Clone()
+    assert rat
+
+    ds = None
+
+    assert rat.GetTableType() == gdal.GRTT_THEMATIC
+    assert rat.GetColumnCount() == 3
+    assert rat.GetRowCount() == 18
+
+    assert rat.GetNameOfCol(-1) is None
+    assert rat.GetNameOfCol(0) == "Value"
+    assert rat.GetNameOfCol(1) == "Count"
+    assert rat.GetNameOfCol(2) == "description"
+    assert rat.GetNameOfCol(3) is None
+
+    assert rat.GetUsageOfCol(-1) == gdal.GFU_Generic
+    assert rat.GetUsageOfCol(0) == gdal.GFU_MinMax
+    assert rat.GetUsageOfCol(1) == gdal.GFU_PixelCount
+    assert rat.GetUsageOfCol(2) == gdal.GFU_Generic
+    assert rat.GetUsageOfCol(3) == gdal.GFU_Generic
+
+    assert rat.GetColOfUsage(gdal.GFU_MinMax) == 0
+    assert rat.GetColOfUsage(gdal.GFU_PixelCount) == 1
+    assert rat.GetColOfUsage(gdal.GFU_Generic) == -1
+
+    assert rat.GetTypeOfCol(-1) == gdal.GFT_Integer  # just testing it doesn't crash
+    assert rat.GetTypeOfCol(0) == gdal.GFT_Integer
+    assert rat.GetTypeOfCol(1) == gdal.GFT_Real
+    assert rat.GetTypeOfCol(2) == gdal.GFT_String
+    assert rat.GetTypeOfCol(3) == gdal.GFT_Integer  # just testing it doesn't crash
+
+    assert rat.GetValueAsString(-1, 0) == ""
+    with gdaltest.error_handler():
+        assert rat.GetValueAsString(0, -1) == ""
+    assert rat.GetValueAsString(0, 0) == "-124"
+    assert rat.GetValueAsString(1, 0) == "-116"
+    assert rat.GetValueAsString(0, 1) == "72"
+    assert rat.GetValueAsString(0, 2) == "test"
+    assert rat.GetValueAsString(0, 3) == ""
+
+    assert rat.GetValueAsInt(-1, 0) == 0
+    with gdaltest.error_handler():
+        assert rat.GetValueAsInt(0, -1) == 0
+    assert rat.GetValueAsInt(0, 0) == -124
+    assert rat.GetValueAsInt(1, 0) == -116
+    assert rat.GetValueAsInt(0, 1) == 72
+    assert rat.GetValueAsInt(0, 2) == 0
+    assert rat.GetValueAsInt(0, 3) == 0
+
+    assert rat.GetValueAsDouble(-1, 0) == 0
+    with gdaltest.error_handler():
+        assert rat.GetValueAsDouble(0, -1) == 0
+    assert rat.GetValueAsDouble(0, 0) == -124
+    assert rat.GetValueAsDouble(1, 0) == -116
+    assert rat.GetValueAsDouble(0, 1) == 72
+    assert rat.GetValueAsDouble(0, 2) == 0
+    assert rat.GetValueAsDouble(0, 3) == 0
+
+    with gdaltest.error_handler():
+        rat.SetValueAsString(0, 0, "foo")
+        rat.SetValueAsInt(0, 1, 1)
+        rat.SetValueAsDouble(0, 2, 1.5)
+        rat.SetTableType(gdal.GRTT_THEMATIC)
diff --git a/doc/source/drivers/raster/openfilegdb.rst b/doc/source/drivers/raster/openfilegdb.rst
new file mode 100644
index 000000000000..5ad82512db4b
--- /dev/null
+++ b/doc/source/drivers/raster/openfilegdb.rst
@@ -0,0 +1,97 @@
+.. _raster.openfilegdb:
+
+ESRI File Geodatabase raster (OpenFileGDB)
+==========================================
+
+.. versionadded:: 3.7
+
+.. shortname:: OpenFileGDB
+
+.. built_in_by_default::
+
+The OpenFileGDB driver provides read access to rster layers of File
+Geodatabases (.gdb directories) created by ArcGIS 10 and above. The
+dataset name must be the directory/folder name, and it must end with the
+.gdb extension.
+
+It can also read directly zipped .gdb directories (with .gdb.zip
+extension), provided they contain a .gdb directory at their first level.
+
+The driver supports:
+
+- reading CRS information
+- reading geotransform
+- exposing overviews
+- exposing nodata mask band or nodata value
+- uncompressed, LZ77, JPEG and JPEG2000 compression methods.
+- exposing value attribute tables as GDAL Raster attribute tables.
+
+Driver capabilities
+-------------------
+
+.. supports_georeferencing::
+
+.. supports_virtualio::
+
+Connection string
+-----------------
+
+When a File Geodatabase contains several raster layers, the raster layer that
+must be opened is specified with the following connection string
+
+::
+
+    OpenFileGDB:"/path/to/my.gdb":name_of_raster_layer
+
+When opening a dataset with pointing only to the .gdb directory, and if it
+contains several raster layers, a list of subdatasets is returned by the driver
+
+Open options
+-------------
+
+-  **NODATA_OR_MASK**\ = ``AUTO``, ``MASK``, ``NONE`` or numeric nodata value.
+
+   + In AUTO mode, the driver will expose a dataset nodata mask band, unless the
+     band data type is Float32 or Float64, in which case a nodata value is used.
+   + In MASK mode, the driver will expose a dataset nodata mask band for all
+     data types.
+   + In NONE mode, the driver will not expose a nodata mask band or a
+     nodata value.
+   + When specifying a numeric nodata value (``nan`` accepted for Float32 or
+     Float64), it is used as the band nodata value. The nodata value should be
+     selected outside the range of valid values (but within the range of the
+     data type).
+
+Metadata
+--------
+
+The ``xml:documentation`` and ``xml:definition`` metadata domains contain the
+XML content from the ``GDB_Items`` table related to the raster layer.
+
+Examples
+--------
+
+-  List raster layers from a FileGDB
+
+   ::
+
+      gdalinfo /path/to/my.gdb
+
+-  Open a given subdataset:
+
+   ::
+
+      gdalinfo OpenFileGDB:"/path/to/my.gdb":name_of_raster_layer
+
+
+Links
+-----
+
+-  :ref:`OpenFileGDB vector <vector.openfilegdb>` documentation page
+
+
+Credits
+-------
+
+Thanks to Richard Barnes and his ArcRescue tool for the deciphering of
+the band_types field which indicates the compression method and the data type.
diff --git a/ogr/ogrsf_frmts/openfilegdb/gdalopenfilegdbrasterband.cpp b/ogr/ogrsf_frmts/openfilegdb/gdalopenfilegdbrasterband.cpp
new file mode 100644
index 000000000000..39b6944b89b7
--- /dev/null
+++ b/ogr/ogrsf_frmts/openfilegdb/gdalopenfilegdbrasterband.cpp
@@ -0,0 +1,1840 @@
+/******************************************************************************
+ *
+ * Project:  OpenGIS Simple Features Reference Implementation
+ * Purpose:  Implements Open FileGDB raster driver.
+ * Author:   Even Rouault, <even dot rouault at spatialys.com>
+ *
+ ******************************************************************************
+ * Copyright (c) 2023, Even Rouault <even dot rouault at spatialys.com>
+ *
+ * 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 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 "cpl_port.h"
+#include "cpl_conv.h"
+#include "cpl_minixml.h"
+
+#include "ogr_openfilegdb.h"
+
+#include "gdal_rat.h"
+#include "filegdbtable_priv.h"
+
+#include <algorithm>
+#include <limits>
+#include <new>
+#include <utility>
+
+using namespace OpenFileGDB;
+
+/***********************************************************************/
+/*                         OpenRaster()                                */
+/***********************************************************************/
+
+bool OGROpenFileGDBDataSource::OpenRaster(const GDALOpenInfo *poOpenInfo,
+                                          const std::string &osLayerName,
+                                          const std::string &osDefinition,
+                                          const std::string &osDocumentation)
+{
+    m_osRasterLayerName = osLayerName;
+
+    const std::string osBndTableName(
+        std::string("fras_bnd_").append(osLayerName).c_str());
+    const auto oIter = m_osMapNameToIdx.find(osBndTableName);
+    if (oIter == m_osMapNameToIdx.end())
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Cannot find table %s",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const int nBndIdx = oIter->second;
+
+    FileGDBTable oTable;
+
+    const CPLString osBndFilename(CPLFormFilename(
+        m_osDirName, CPLSPrintf("a%08x.gdbtable", nBndIdx), nullptr));
+    if (!oTable.Open(osBndFilename, false))
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Cannot open table %s",
+                 osBndTableName.c_str());
+        return false;
+    }
+
+    const int i_rasterband_id = oTable.GetFieldIdx("rasterband_id");
+    const int i_sequence_nbr = oTable.GetFieldIdx("sequence_nbr");
+    const int i_raster_id = oTable.GetFieldIdx("raster_id");
+    const int i_band_width = oTable.GetFieldIdx("band_width");
+    const int i_band_height = oTable.GetFieldIdx("band_height");
+    const int i_band_types = oTable.GetFieldIdx("band_types");
+    const int i_block_width = oTable.GetFieldIdx("block_width");
+    const int i_block_height = oTable.GetFieldIdx("block_height");
+    const int i_block_origin_x = oTable.GetFieldIdx("block_origin_x");
+    const int i_block_origin_y = oTable.GetFieldIdx("block_origin_y");
+    const int i_eminx = oTable.GetFieldIdx("eminx");
+    const int i_eminy = oTable.GetFieldIdx("eminy");
+    const int i_emaxx = oTable.GetFieldIdx("emaxx");
+    const int i_emaxy = oTable.GetFieldIdx("emaxy");
+    const int i_srid = oTable.GetFieldIdx("srid");
+    if (i_rasterband_id < 0 || i_sequence_nbr < 0 || i_raster_id < 0 ||
+        i_band_width < 0 || i_band_height < 0 || i_band_types < 0 ||
+        i_block_width < 0 || i_block_height < 0 || i_block_origin_x < 0 ||
+        i_block_origin_y < 0 || i_eminx < 0 || i_eminy < 0 || i_emaxx < 0 ||
+        i_emaxy < 0 || i_srid < 0 ||
+        oTable.GetField(i_rasterband_id)->GetType() != FGFT_OBJECTID ||
+        oTable.GetField(i_sequence_nbr)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_raster_id)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_band_width)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_band_height)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_band_types)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_block_width)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_block_height)->GetType() != FGFT_INT32 ||
+        oTable.GetField(i_block_origin_x)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_block_origin_y)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_eminx)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_eminy)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_emaxx)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_emaxy)->GetType() != FGFT_FLOAT64 ||
+        oTable.GetField(i_srid)->GetType() != FGFT_INT32)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Wrong structure for %s table",
+                 osBndTableName.c_str());
+        return false;
+    }
+
+    int iRow = 0;
+    while (iRow < oTable.GetTotalRecordCount() &&
+           (iRow = oTable.GetAndSelectNextNonEmptyRow(iRow)) >= 0)
+    {
+        auto psField = oTable.GetFieldValue(i_raster_id);
+        if (!psField)
+        {
+            CPLError(CE_Failure, CPLE_AppDefined,
+                     "Cannot read field %s in %s table", "raster_id",
+                     osBndTableName.c_str());
+            return false;
+        }
+        if (psField->Integer != 1)
+        {
+            CPLError(CE_Warning, CPLE_AppDefined,
+                     "Raster with raster_id = %d (!= 1) ignored",
+                     psField->Integer);
+            continue;
+        }
+
+        const int nGDBRasterBandId = iRow + 1;
+
+        psField = oTable.GetFieldValue(i_sequence_nbr);
+        if (!psField)
+        {
+            CPLError(CE_Failure, CPLE_AppDefined,
+                     "Cannot read field %s in %s table", "sequence_nbr",
+                     osBndTableName.c_str());
+            return false;
+        }
+        const int nSequenceNr = psField->Integer;
+
+        m_oMapGDALBandToGDBBandId[nSequenceNr] = nGDBRasterBandId;
+
+        ++iRow;
+    }
+
+    if (m_oMapGDALBandToGDBBandId.empty())
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Cannot read record in %s table",
+                 osBndTableName.c_str());
+        return false;
+    }
+
+    auto psField = oTable.GetFieldValue(i_band_width);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "band_width",
+                 osBndTableName.c_str());
+        return false;
+    }
+    int nWidth = psField->Integer;
+
+    psField = oTable.GetFieldValue(i_band_height);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "band_height",
+                 osBndTableName.c_str());
+        return false;
+    }
+    int nHeight = psField->Integer;
+
+    const int l_nBands = static_cast<int>(m_oMapGDALBandToGDBBandId.size());
+    if (!GDALCheckDatasetDimensions(nWidth, nHeight) ||
+        !GDALCheckBandCount(l_nBands, /*bIsZeroAllowed=*/false))
+    {
+        return false;
+    }
+
+    psField = oTable.GetFieldValue(i_block_width);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "block_width",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const int nBlockWidth = psField->Integer;
+
+    // 32768 somewhat arbitrary
+    if (nBlockWidth <= 0 || nBlockWidth > 32768)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Invalid %s in %s table",
+                 "block_width", osBndTableName.c_str());
+        return false;
+    }
+
+    psField = oTable.GetFieldValue(i_block_height);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "block_height",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const int nBlockHeight = psField->Integer;
+
+    // 32768 somewhat arbitrary
+    if (nBlockHeight <= 0 || nBlockHeight > 32768)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Invalid %s in %s table",
+                 "block_height", osBndTableName.c_str());
+        return false;
+    }
+
+    psField = oTable.GetFieldValue(i_band_types);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "band_types",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const int nBandTypes = psField->Integer;
+
+    psField = oTable.GetFieldValue(i_eminx);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "eminx",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfMinX = psField->Real;
+
+    psField = oTable.GetFieldValue(i_eminy);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "eminy",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfMinY = psField->Real;
+
+    psField = oTable.GetFieldValue(i_emaxx);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "emaxx",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfMaxX = psField->Real;
+
+    psField = oTable.GetFieldValue(i_emaxy);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "emaxy",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfMaxY = psField->Real;
+
+    psField = oTable.GetFieldValue(i_block_origin_x);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "block_origin_x",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfBlockOriginX = psField->Real;
+
+    psField = oTable.GetFieldValue(i_block_origin_y);
+    if (!psField)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "block_origin_y",
+                 osBndTableName.c_str());
+        return false;
+    }
+    const double dfBlockOriginY = psField->Real;
+
+    // Figure out data type
+    GDALDataType eDT = GDT_Byte;
+    const int nBitWidth = (nBandTypes >> 19) & ((1 << 7) - 1);
+    const int nBitType = (nBandTypes >> 16) & ((1 << 2) - 1);
+    constexpr int IS_UNSIGNED = 0;
+    constexpr int IS_SIGNED = 1;
+    constexpr int IS_FLOATING_POINT = 2;
+    if ((nBitWidth >= 1 && nBitWidth < 8) && nBitType == IS_UNSIGNED)
+    {
+        eDT = GDT_Byte;
+    }
+    else if (nBitWidth == 8 && nBitType <= IS_SIGNED)
+    {
+        eDT = nBitType == IS_SIGNED ? GDT_Int8 : GDT_Byte;
+    }
+    else if (nBitWidth == 16 && nBitType <= IS_SIGNED)
+    {
+        eDT = nBitType == IS_SIGNED ? GDT_Int16 : GDT_UInt16;
+    }
+    else if (nBitWidth == 32 && nBitType <= IS_FLOATING_POINT)
+    {
+        eDT = nBitType == IS_FLOATING_POINT ? GDT_Float32
+              : nBitType == IS_SIGNED       ? GDT_Int32
+                                            : GDT_UInt32;
+    }
+    else if (nBitWidth == 64 && nBitType == 0)
+    {
+        eDT = GDT_Float64;
+    }
+    else
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Unhandled nBitWidth=%d, nBitType=%d in %s table", nBitWidth,
+                 nBitType, osBndTableName.c_str());
+        return false;
+    }
+
+    // To avoid potential integer overflows in IReadBlock()
+    if (nBlockWidth * nBlockHeight >
+        std::numeric_limits<int>::max() / nBitWidth)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "Too large block %dx%d in %s table", nBlockWidth, nBlockHeight,
+                 osBndTableName.c_str());
+        return false;
+    }
+
+    // Figure out compression
+    const int nCompression = (nBandTypes >> 8) & 0xff;
+    switch (nCompression)
+    {
+        case 0:
+            m_eRasterCompression = Compression::NONE;
+            break;
+        case 4:
+            m_eRasterCompression = Compression::LZ77;
+            SetMetadataItem("COMPRESSION", "DEFLATE", "IMAGE_STRUCTURE");
+            break;
+        case 8:
+            m_eRasterCompression = Compression::JPEG;
+            SetMetadataItem("COMPRESSION", "JPEG", "IMAGE_STRUCTURE");
+            break;
+        case 12:
+            m_eRasterCompression = Compression::JPEG2000;
+            SetMetadataItem("COMPRESSION", "JPEG2000", "IMAGE_STRUCTURE");
+            break;
+        default:
+        {
+            CPLError(CE_Failure, CPLE_AppDefined,
+                     "Unhandled compression %d in %s table", nCompression,
+                     osBndTableName.c_str());
+            return false;
+        }
+    }
+
+    // Figure out geotransform
+
+    if (!(dfMaxX > dfMinX && dfMaxY > dfMinY))
+    {
+        CPLError(CE_Warning, CPLE_AppDefined,
+                 "!(dfMaxX > dfMinX && dfMaxY > dfMinY)");
+    }
+    else if (nWidth == 1 || nHeight == 1)
+    {
+        CPLError(CE_Warning, CPLE_AppDefined,
+                 "nWidth == 1 || nHeight == 1: cannot determine geotransform");
+    }
+    else
+    {
+        // FileGDB uses a center-of-pixel convention for georeferencing
+        // Transform to GDAL's corner-of-pixel convention.
+        const double dfResX = (dfMaxX - dfMinX) / (nWidth - 1);
+        const double dfResY = (dfMaxY - dfMinY) / (nHeight - 1);
+        m_bHasGeoTransform = true;
+        m_adfGeoTransform[0] = dfBlockOriginX - dfResX / 2;
+        m_adfGeoTransform[1] = dfResX;
+        m_adfGeoTransform[2] = 0.0;
+        m_adfGeoTransform[3] = dfBlockOriginY + dfResY / 2;
+        m_adfGeoTransform[4] = 0.0;
+        m_adfGeoTransform[5] = -dfResY;
+
+        // If the block origin is within the full raster extent, reduce the
+        // advertized raster width/height
+        if (dfBlockOriginX > dfMinX && dfBlockOriginX < dfMaxX)
+        {
+            const int nWidthDiff = static_cast<int>(
+                std::round((dfMinX - dfBlockOriginX) / dfResX));
+            if (nWidthDiff < nWidth)
+                nWidth -= nWidthDiff;
+        }
+        if (dfBlockOriginY < dfMaxY && dfBlockOriginY > dfMinY)
+        {
+            const int nHeightDiff = static_cast<int>(
+                std::round((dfMaxY - dfBlockOriginY) / dfResY));
+            if (nHeightDiff < nHeight)
+                nHeight -= nHeightDiff;
+        }
+    }
+
+    // Get SRID, and fetch WKT from GDBSpatialRefs table
+    psField = oTable.GetFieldValue(i_srid);
+    if (!psField)
+    {
+        CPLError(CE_Warning, CPLE_AppDefined,
+                 "Cannot read field %s in %s table", "srid",
+                 osBndTableName.c_str());
+    }
+    else if (m_osGDBSpatialRefsFilename.empty())
+    {
+        CPLError(CE_Warning, CPLE_AppDefined, "No GDBSpatialRefs table");
+    }
+    else
+    {
+        const int nSRID = psField->Integer;
+        FileGDBTable oTableSRS;
+        if (oTableSRS.Open(m_osGDBSpatialRefsFilename.c_str(), false))
+        {
+            const int iSRTEXT = oTableSRS.GetFieldIdx("SRTEXT");
+            if (iSRTEXT < 0 ||
+                oTableSRS.GetField(iSRTEXT)->GetType() != FGFT_STRING)
+            {
+                CPLError(CE_Warning, CPLE_AppDefined,
+                         "Could not find field %s in table %s", "SRTEXT",
+                         oTableSRS.GetFilename().c_str());
+            }
+            else if (nSRID == 0)
+            {
+                // BldgHeights.gdb is such. We must fetch the SRS from the
+                // Definition column of the GDB_Items table
+                CPLXMLTreeCloser psTree(
+                    CPLParseXMLString(osDefinition.c_str()));
+                if (psTree == nullptr)
+                {
+                    CPLError(
+                        CE_Warning, CPLE_AppDefined,
+                        "Cannot parse XML definition. SRS will be missing");
+                }
+                else
+                {
+                    CPLStripXMLNamespace(psTree.get(), nullptr, TRUE);
+                    const CPLXMLNode *psInfo =
+                        CPLSearchXMLNode(psTree.get(), "=DERasterDataset");
+                    if (psInfo)
+                    {
+                        auto poSRS = BuildSRS(psInfo);
+                        if (poSRS)
+                            m_oRasterSRS = *poSRS;
+                    }
+                    if (m_oRasterSRS.IsEmpty())
+                    {
+                        CPLError(CE_Warning, CPLE_AppDefined,
+                                 "Cannot get SRS from XML definition");
+                    }
+                }
+            }
+            else if (nSRID < 0 || !oTableSRS.SelectRow(nSRID - 1) ||
+                     oTableSRS.HasGotError())
+            {
+                CPLError(CE_Warning, CPLE_AppDefined,
+                         "Cannot find record corresponding to SRID = %d",
+                         nSRID);
+            }
+            else
+            {
+                const auto psSRTEXT = oTableSRS.GetFieldValue(iSRTEXT);
+                if (psSRTEXT && psSRTEXT->String)
+                {
+                    auto poSRS = BuildSRS(psSRTEXT->String);
+                    if (poSRS)
+                        m_oRasterSRS = *poSRS;
+                }
+                else
+                {
+                    CPLError(CE_Warning, CPLE_AppDefined,
+                             "Cannot get SRTEXT corresponding to SRID = %d",
+                             nSRID);
+                }
+            }
+        }
+    }
+
+    // Open the fras_blk_XXX table, which contains pixel data, as a OGR layer
+    const std::string osBlkTableName(
+        std::string("fras_blk_").append(osLayerName).c_str());
+    m_poBlkLayer = BuildLayerFromName(osBlkTableName.c_str());
+    if (!m_poBlkLayer)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Cannot find table %s",
+                 osBlkTableName.c_str());
+        return false;
+    }
+    auto poFDefn = m_poBlkLayer->GetLayerDefn();
+    if (poFDefn->GetFieldIndex("rasterband_id") < 0 ||
+        poFDefn->GetFieldIndex("rrd_factor") < 0 ||
+        poFDefn->GetFieldIndex("row_nbr") < 0 ||
+        poFDefn->GetFieldIndex("col_nbr") < 0 ||
+        poFDefn->GetFieldIndex("block_data") < 0 ||
+        poFDefn->GetFieldIndex("block_key") < 0)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Wrong structure for %s table",
+                 osBlkTableName.c_str());
+        return false;
+    }
+
+    nRasterXSize = nWidth;
+    nRasterYSize = nHeight;
+
+    if (m_oMapGDALBandToGDBBandId.size() > 1)
+    {
+        SetMetadataItem("INTERLEAVE", "BAND", "IMAGE_STRUCTURE");
+    }
+
+    // Figure out number of overviews by looking at the biggest block_key
+    // (should only involve looking in the corresponding index).
+    int nOverviewCount = 0;
+    CPLString osSQL;
+    osSQL.Printf("SELECT MAX(block_key) FROM \"%s\"", osBlkTableName.c_str());
+    auto poSQLLyr = ExecuteSQL(osSQL.c_str(), nullptr, nullptr);
+    if (poSQLLyr)
+    {
+        auto poFeat = std::unique_ptr<OGRFeature>(poSQLLyr->GetNextFeature());
+        if (poFeat)
+        {
+            const char *pszMaxKey = poFeat->GetFieldAsString(0);
+            if (strlen(pszMaxKey) == strlen("0000BANDOVYYYYXXXX    "))
+            {
+                char szHex[3] = {0};
+                memcpy(szHex, pszMaxKey + 8, 2);
+                unsigned nMaxRRD = 0;
+                sscanf(szHex, "%02X", &nMaxRRD);
+                nOverviewCount =
+                    static_cast<int>(std::min<unsigned>(31, nMaxRRD));
+            }
+        }
+        ReleaseResultSet(poSQLLyr);
+    }
+
+    if (m_eRasterCompression == Compression::JPEG)
+    {
+        GuessJPEGQuality(nOverviewCount);
+    }
+
+    // It seems that the top left corner of overviews is registered against
+    // (eminx, emaxy), contrary to the full resolution layer which is registered
+    // against (block_origin_x, block_origin_y).
+    // At least, that's what was observed on the dataset
+    // ftp://ftp.gisdata.mn.gov/pub/gdrs/data/pub/us_mn_state_dnr/water_lake_bathymetry/fgdb_water_lake_bathymetry.zip
+    if ((dfBlockOriginX != dfMinX || dfBlockOriginY != dfMaxY) &&
+        nOverviewCount > 0)
+    {
+        CPLDebug("OpenFileGDB",
+                 "Ignoring overviews as block origin != (minx, maxy)");
+        nOverviewCount = 0;
+    }
+
+    // Create raster bands
+
+    // Create mask band of full resolution, if we don't assign a nodata value
+    std::unique_ptr<GDALOpenFileGDBRasterBand> poMaskBand;
+
+    // Default "nodata" padding in areas whose validity mask is 0 ?
+    // Not reliable on integer data types.
+    // Byte -> 0
+    // Int8 -> -128 ?
+    // Int16 -> 32767
+    // UInt16 -> 0
+    // (u)int10 -> 65535
+    // (u)int12 -> 65535
+    // Int32 -> 2147483647
+    // UInt32 -> 2147483647
+    // Float32 -> 3.4e+38
+    // Float64 -> 1.79e+308
+
+    bool bHasNoData = false;
+    double dfNoData = 0.0;
+    const char *pszNoDataOrMask = CSLFetchNameValueDef(
+        poOpenInfo->papszOpenOptions, "NODATA_OR_MASK", "AUTO");
+    if (EQUAL(pszNoDataOrMask, "AUTO"))
+    {
+        // In AUTO mode, we only set nodata for Float32/Float64
+        // For other data types, report a mask band.
+        if (eDT == GDT_Float32)
+        {
+            bHasNoData = true;
+            dfNoData = static_cast<double>(static_cast<float>(3.4e+38));
+        }
+        else if (eDT == GDT_Float64)
+        {
+            bHasNoData = true;
+            dfNoData = 1.79e+308;
+        }
+        else
+        {
+            poMaskBand = cpl::make_unique<GDALOpenFileGDBRasterBand>(
+                this, 1, GDT_Byte, 8, nBlockWidth, nBlockHeight, 0, true);
+        }
+    }
+    else if (EQUAL(pszNoDataOrMask, "MASK"))
+    {
+        poMaskBand = cpl::make_unique<GDALOpenFileGDBRasterBand>(
+            this, 1, GDT_Byte, 8, nBlockWidth, nBlockHeight, 0, true);
+    }
+    else if (!EQUAL(pszNoDataOrMask, "NONE"))
+    {
+        dfNoData = CPLAtof(pszNoDataOrMask);
+        if (eDT == GDT_Float64)
+        {
+            bHasNoData = true;
+        }
+        else if (eDT == GDT_Float32)
+        {
+            if (std::fabs(dfNoData) > std::numeric_limits<float>::max())
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Invalid nodata value %.18g for Float32", dfNoData);
+                return false;
+            }
+            bHasNoData = true;
+        }
+        else if (GDALDataTypeIsInteger(eDT))
+        {
+            double dfMin = 0, dfMax = 0;
+            switch (eDT)
+            {
+                case GDT_Int8:
+                    dfMin = std::numeric_limits<int8_t>::min();
+                    dfMax = std::numeric_limits<int8_t>::max();
+                    break;
+                case GDT_Byte:
+                    dfMin = std::numeric_limits<uint8_t>::min();
+                    dfMax = std::numeric_limits<uint8_t>::max();
+                    break;
+                case GDT_Int16:
+                    dfMin = std::numeric_limits<int16_t>::min();
+                    dfMax = std::numeric_limits<int16_t>::max();
+                    break;
+                case GDT_UInt16:
+                    dfMin = std::numeric_limits<uint16_t>::min();
+                    dfMax = std::numeric_limits<uint16_t>::max();
+                    break;
+                case GDT_Int32:
+                    dfMin = std::numeric_limits<int32_t>::min();
+                    dfMax = std::numeric_limits<int32_t>::max();
+                    break;
+                case GDT_UInt32:
+                    dfMin = std::numeric_limits<uint32_t>::min();
+                    dfMax = std::numeric_limits<uint32_t>::max();
+                    break;
+                default:
+                    CPLAssert(false);
+                    return false;
+            }
+            if (!std::isfinite(dfNoData) || dfNoData < dfMin ||
+                dfNoData > dfMax ||
+                dfNoData != static_cast<double>(static_cast<int64_t>(dfNoData)))
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Invalid nodata value %.18g for %s", dfNoData,
+                         GDALGetDataTypeName(eDT));
+                return false;
+            }
+            bHasNoData = true;
+        }
+    }
+
+    GDALOpenFileGDBRasterBand *poMaskBandRef = poMaskBand.get();
+
+    for (int iBand = 1; iBand <= l_nBands; ++iBand)
+    {
+        auto poBand = new GDALOpenFileGDBRasterBand(
+            this, iBand, eDT, nBitWidth, nBlockWidth, nBlockHeight, 0, false);
+        if (poMaskBandRef)
+        {
+            if (iBand == 1)
+            {
+                // Make the mask band owned by the first raster band
+                poBand->m_poMaskBandOwned = std::move(poMaskBand);
+                poMaskBandRef = poBand->m_poMaskBandOwned.get();
+                poMaskBandRef->m_poMainBand = poBand;
+            }
+            poBand->m_poMaskBand = poMaskBandRef;
+        }
+        else if (bHasNoData)
+        {
+            poBand->m_dfNoData = dfNoData;
+            poBand->m_bHasNoData = true;
+        }
+
+        // Create overview bands
+        for (int iOvr = 0; iOvr < nOverviewCount; ++iOvr)
+        {
+            auto poOvrBand = cpl::make_unique<GDALOpenFileGDBRasterBand>(
+                this, iBand, eDT, nBitWidth, nBlockWidth, nBlockHeight,
+                iOvr + 1, false);
+            if (poBand->m_bHasNoData)
+            {
+                poOvrBand->m_dfNoData = dfNoData;
+                poOvrBand->m_bHasNoData = true;
+            }
+            poBand->m_apoOverviewBands.emplace_back(std::move(poOvrBand));
+        }
+
+        SetBand(iBand, poBand);
+    }
+
+    // Create mask band of overview bands
+    if (poMaskBandRef)
+    {
+        for (int iOvr = 0; iOvr < nOverviewCount; ++iOvr)
+        {
+            for (int iBand = 1; iBand <= l_nBands; ++iBand)
+            {
+                auto poOvrBand = cpl::down_cast<GDALOpenFileGDBRasterBand *>(
+                                     GetRasterBand(iBand))
+                                     ->m_apoOverviewBands[iOvr]
+                                     .get();
+                if (iBand == 1)
+                {
+                    // Make the mask band owned by the first raster band
+                    poOvrBand->m_poMaskBandOwned =
+                        cpl::make_unique<GDALOpenFileGDBRasterBand>(
+                            this, 1, GDT_Byte, 8, nBlockWidth, nBlockHeight,
+                            iOvr + 1, true);
+                    poMaskBandRef = poOvrBand->m_poMaskBandOwned.get();
+                    poMaskBandRef->m_poMainBand = poOvrBand;
+                }
+                poOvrBand->m_poMaskBand = poMaskBandRef;
+            }
+        }
+    }
+
+    ReadAuxTable(osLayerName);
+
+    if (!osDefinition.empty())
+    {
+        const char *const apszMD[] = {osDefinition.c_str(), nullptr};
+        SetMetadata(const_cast<char **>(apszMD), "xml:definition");
+    }
+
+    if (!osDocumentation.empty())
+    {
+        const char *const apszMD[] = {osDocumentation.c_str(), nullptr};
+        SetMetadata(const_cast<char **>(apszMD), "xml:documentation");
+    }
+
+    // We are all fine after all those preliminary checks and setups !
+    return true;
+}
+
+/************************************************************************/
+/*                       GuessJPEGQuality()                             */
+/************************************************************************/
+
+void OGROpenFileGDBDataSource::GuessJPEGQuality(int nOverviewCount)
+{
+    // For JPEG, fetch JPEG_QUALITY from the data of the smallest overview level
+    CPLString osFilter;
+    osFilter.Printf("block_key = '0000%04X%02X%04X%04X'",
+                    1,  // band
+                    nOverviewCount,
+                    0,  // nBlockYOff
+                    0   // nBlockXOff
+    );
+
+    CPLAssert(m_poBlkLayer);
+    m_poBlkLayer->SetAttributeFilter(osFilter.c_str());
+    auto poFeature =
+        std::unique_ptr<OGRFeature>(m_poBlkLayer->GetNextFeature());
+    if (poFeature)
+    {
+        const int nFieldIdx = poFeature->GetFieldIndex("block_data");
+        CPLAssert(nFieldIdx >= 0);
+        if (poFeature->IsFieldSetAndNotNull(nFieldIdx))
+        {
+            int nInBytes = 0;
+            const GByte *pabyData =
+                poFeature->GetFieldAsBinary(nFieldIdx, &nInBytes);
+            if (nInBytes >= 5)
+            {
+                uint32_t nJPEGSize = nInBytes - 1;
+                uint32_t nJPEGOffset = 1;
+                if (pabyData[0] == 0xFE)
+                {
+                    // JPEG followed by binary mask
+                    memcpy(&nJPEGSize, pabyData + 1, sizeof(uint32_t));
+                    CPL_LSBPTR32(&nJPEGSize);
+                    if (nJPEGSize > static_cast<unsigned>(nInBytes - 5))
+                    {
+                        nJPEGSize = 0;
+                    }
+                    nJPEGOffset = 5;
+                }
+                else if (pabyData[0] != 1)
+                {
+                    nJPEGSize = 0;
+                }
+                if (nJPEGSize)
+                {
+                    CPLString osTmpFilename;
+                    osTmpFilename.Printf("/vsimem/_openfilegdb/%p.jpg", this);
+                    VSIFCloseL(VSIFileFromMemBuffer(
+                        osTmpFilename.c_str(),
+                        const_cast<GByte *>(pabyData + nJPEGOffset), nJPEGSize,
+                        false));
+                    const char *const apszDrivers[] = {"JPEG", nullptr};
+                    auto poJPEGDS = std::unique_ptr<GDALDataset>(
+                        GDALDataset::Open(osTmpFilename.c_str(), GDAL_OF_RASTER,
+                                          apszDrivers));
+                    if (poJPEGDS)
+                    {
+                        const char *pszQuality = poJPEGDS->GetMetadataItem(
+                            "JPEG_QUALITY", "IMAGE_STRUCTURE");
+                        if (pszQuality)
+                        {
+                            SetMetadataItem("JPEG_QUALITY", pszQuality,
+                                            "IMAGE_STRUCTURE");
+                        }
+                    }
+                    VSIUnlink(osTmpFilename);
+                }
+            }
+        }
+    }
+}
+
+/************************************************************************/
+/*                        ReadAuxTable()                                */
+/************************************************************************/
+
+// Record type=9 of table fras_ras_XXXX contains a PropertySet object,
+// which may contain statistics
+// For example on
+// https://listdata.thelist.tas.gov.au/opendata/data/NCH_ES_WATER_LOGGING_HAZARD_STATEWIDE.zip
+void OGROpenFileGDBDataSource::ReadAuxTable(const std::string &osLayerName)
+{
+    const std::string osAuxTableName(
+        std::string("fras_aux_").append(osLayerName).c_str());
+    auto poLayer = BuildLayerFromName(osAuxTableName.c_str());
+    if (!poLayer)
+    {
+        CPLDebug("OpenFileGDB", "Cannot find table %s", osAuxTableName.c_str());
+        return;
+    }
+    auto poFDefn = poLayer->GetLayerDefn();
+    const int iFieldObjectIdx = poFDefn->GetFieldIndex("object");
+    if (poFDefn->GetFieldIndex("type") < 0 || iFieldObjectIdx < 0)
+    {
+        CPLDebug("OpenFileGDB", "Wrong structure for %s table",
+                 osAuxTableName.c_str());
+        return;
+    }
+    poLayer->SetAttributeFilter("type = 9");
+    auto poFeature = std::unique_ptr<OGRFeature>(poLayer->GetNextFeature());
+    if (!poFeature)
+        return;
+    if (!poFeature->IsFieldSetAndNotNull(iFieldObjectIdx))
+        return;
+    int nBytes = 0;
+    const GByte *pabyData =
+        poFeature->GetFieldAsBinary(iFieldObjectIdx, &nBytes);
+    if (!pabyData || nBytes == 0)
+        return;
+    int iOffset = 0;
+
+    const auto ReadString = [pabyData, &iOffset, nBytes](std::string &osStr)
+    {
+        if (iOffset > nBytes - 4)
+            return false;
+        int nStrLength;
+        memcpy(&nStrLength, pabyData + iOffset, 4);
+        CPL_LSBPTR32(&nStrLength);
+        iOffset += 4;
+        if (nStrLength <= 2 || iOffset > nBytes - nStrLength)
+            return false;
+        if ((nStrLength % 2) != 0)
+            return false;
+        // nStrLength / 2 to get the number of characters
+        // and - 1 to remove the null terminating one
+        osStr = ReadUTF16String(pabyData + iOffset, nStrLength / 2 - 1);
+        iOffset += nStrLength;
+        return true;
+    };
+
+    // pabyData is an ArcObject "PropertySet" object, which is key/value
+    // dictionary. This is hard to parse given there are variable-length value
+    // whose size is not explicit. So let's use a heuristics by looking for
+    // the beginning of a inner PropertySet with band properties that starts
+    // with a KIND=BAND key value pair.
+    constexpr GByte abyNeedle[] = {
+        'K', 0, 'I', 0, 'N', 0, 'D', 0, 0, 0, 8, 0,  // 8 = string
+        10,  0, 0,   0,  // number of bytes of following value
+        'B', 0, 'A', 0, 'N', 0, 'D', 0, 0, 0};
+    constexpr int nNeedleSize = static_cast<int>(sizeof(abyNeedle));
+
+    for (int iBand = 1; iBand <= nBands; ++iBand)
+    {
+        int iNewOffset = -1;
+        for (int i = iOffset; i < nBytes - nNeedleSize; ++i)
+        {
+            if (pabyData[i] == 'K' &&
+                memcmp(pabyData + i, abyNeedle, nNeedleSize) == 0)
+            {
+                iNewOffset = i + nNeedleSize;
+                break;
+            }
+        }
+        if (iNewOffset < 0)
+            return;
+        iOffset = iNewOffset;
+
+        // Try to read as many key/value pairs as possible
+        while (true)
+        {
+            // Read key
+            std::string osKey;
+            if (!ReadString(osKey))
+                return;
+
+            // Read value type as a short
+            uint16_t nValueType;
+            if (iOffset > nBytes - 2)
+                return;
+            memcpy(&nValueType, pabyData + iOffset, 2);
+            CPL_LSBPTR16(&nValueType);
+            iOffset += 2;
+
+            // Skip over non-string values
+            if (nValueType == 0 || nValueType == 1)  // null / empty value
+            {
+                continue;
+            }
+            if (nValueType == 2)  // short value
+            {
+                if (iOffset > nBytes - 2)
+                    return;
+                iOffset += 2;
+                continue;
+            }
+
+            if (nValueType == 3 || nValueType == 4)  // int or long value
+            {
+                if (iOffset > nBytes - 4)
+                    return;
+                iOffset += 4;
+                continue;
+            }
+
+            if (nValueType == 5 || nValueType == 7)  // double or date value
+            {
+                if (iOffset > nBytes - 8)
+                    return;
+                iOffset += 8;
+                continue;
+            }
+
+            if (nValueType != 8)  // 8 = string
+            {
+                // Give up with this band as the value type is not handled,
+                // and we can't skip over it.
+                break;
+            }
+
+            // Read string value
+            std::string osValue;
+            if (!ReadString(osValue))
+                return;
+
+            GetRasterBand(iBand)->SetMetadataItem(osKey.c_str(),
+                                                  osValue.c_str());
+        }
+    }
+}
+
+/************************************************************************/
+/*                         GetGeoTransform()                            */
+/************************************************************************/
+
+CPLErr OGROpenFileGDBDataSource::GetGeoTransform(double *padfGeoTransform)
+{
+    memcpy(padfGeoTransform, m_adfGeoTransform.data(),
+           sizeof(m_adfGeoTransform));
+    return m_bHasGeoTransform ? CE_None : CE_Failure;
+}
+
+/************************************************************************/
+/*                         GetSpatialRef()                              */
+/************************************************************************/
+
+const OGRSpatialReference *OGROpenFileGDBDataSource::GetSpatialRef() const
+{
+    return m_oRasterSRS.IsEmpty() ? nullptr : &m_oRasterSRS;
+}
+
+/************************************************************************/
+/*                     GDALOpenFileGDBRasterBand()                      */
+/************************************************************************/
+
+GDALOpenFileGDBRasterBand::GDALOpenFileGDBRasterBand(
+    OGROpenFileGDBDataSource *poDSIn, int nBandIn, GDALDataType eDT,
+    int nBitWidth, int nBlockWidth, int nBlockHeight, int nOverviewLevel,
+    bool bIsMask)
+    : m_nBitWidth(nBitWidth), m_nOverviewLevel(nOverviewLevel),
+      m_bIsMask(bIsMask)
+{
+    poDS = poDSIn;
+    nBand = nBandIn;
+    eDataType = eDT;
+    nRasterXSize = std::max(1, poDSIn->GetRasterXSize() >> nOverviewLevel);
+    nRasterYSize = std::max(1, poDSIn->GetRasterYSize() >> nOverviewLevel);
+    nBlockXSize = nBlockWidth;
+    nBlockYSize = nBlockHeight;
+    if (nBitWidth < 8)
+    {
+        SetMetadataItem("NBITS", CPLSPrintf("%d", nBitWidth),
+                        "IMAGE_STRUCTURE");
+    }
+}
+
+/************************************************************************/
+/*                         SetNoDataFromMask()                          */
+/************************************************************************/
+
+template <class T>
+static void SetNoDataFromMask(void *pImage, const GByte *pabyMask,
+                              size_t nPixels, double dfNoData)
+{
+    const T noData = static_cast<T>(dfNoData);
+    const T noDataReplacement =
+        noData == std::numeric_limits<T>::max() ? noData - 1 : noData + 1;
+    bool bHasWarned = false;
+    for (size_t i = 0; i < nPixels; ++i)
+    {
+        if (pabyMask && !(pabyMask[i / 8] & (0x80 >> (i & 7))))
+        {
+            static_cast<T *>(pImage)[i] = noData;
+        }
+        else if (static_cast<T *>(pImage)[i] == noData)
+        {
+            static_cast<T *>(pImage)[i] = noDataReplacement;
+            if (!bHasWarned)
+            {
+                bHasWarned = true;
+                CPLError(CE_Warning, CPLE_AppDefined,
+                         "Valid data found with value equal to nodata (%.0f). "
+                         "Got substituted with %.0f",
+                         static_cast<double>(noData),
+                         static_cast<double>(noDataReplacement));
+            }
+        }
+    }
+}
+
+/************************************************************************/
+/*                         IReadBlock()                                 */
+/************************************************************************/
+
+CPLErr GDALOpenFileGDBRasterBand::IReadBlock(int nBlockXOff, int nBlockYOff,
+                                             void *pImage)
+{
+    auto poGDS = cpl::down_cast<OGROpenFileGDBDataSource *>(poDS);
+    auto &poLyr = poGDS->m_poBlkLayer;
+
+    // Return (pointer to image data, owner block). Works when called from main band
+    // or mask band. owner block must be DropLock() once done (if not null)
+    const auto GetImageData = [this, nBlockXOff, nBlockYOff, pImage]()
+    {
+        void *pImageData = nullptr;
+        GDALRasterBlock *poBlock = nullptr;
+        if (m_bIsMask)
+        {
+            CPLAssert(m_poMainBand);
+            poBlock =
+                m_poMainBand->TryGetLockedBlockRef(nBlockXOff, nBlockYOff);
+            if (poBlock)
+            {
+                // The block is already in cache. Return (null, null)
+                poBlock->DropLock();
+                poBlock = nullptr;
+            }
+            else
+            {
+                poBlock = m_poMainBand->GetLockedBlockRef(nBlockXOff,
+                                                          nBlockYOff, true);
+                if (poBlock)
+                    pImageData = poBlock->GetDataRef();
+            }
+        }
+        else
+        {
+            pImageData = pImage;
+        }
+        return std::make_pair(pImageData, poBlock);
+    };
+
+    // Return (pointer to mask data, owner block). Works when called from main band
+    // or mask band. owner block must be DropLock() once done (if not null)
+    const auto GetMaskData = [this, nBlockXOff, nBlockYOff, pImage]()
+    {
+        void *pMaskData = nullptr;
+        GDALRasterBlock *poBlock = nullptr;
+        if (m_bIsMask)
+        {
+            pMaskData = pImage;
+        }
+        else
+        {
+            CPLAssert(m_poMaskBand);
+            poBlock =
+                m_poMaskBand->TryGetLockedBlockRef(nBlockXOff, nBlockYOff);
+            if (poBlock)
+            {
+                // The block is already in cache. Return (null, null)
+                poBlock->DropLock();
+                poBlock = nullptr;
+            }
+            else
+            {
+                poBlock = m_poMaskBand->GetLockedBlockRef(nBlockXOff,
+                                                          nBlockYOff, true);
+                if (poBlock)
+                    pMaskData = poBlock->GetDataRef();
+            }
+        }
+        return std::make_pair(pMaskData, poBlock);
+    };
+
+    const GDALDataType eImageDT =
+        m_poMainBand ? m_poMainBand->GetRasterDataType() : eDataType;
+    const size_t nPixels = static_cast<size_t>(nBlockXSize) * nBlockYSize;
+
+    const auto FillMissingBlock =
+        [this, eImageDT, nPixels, &GetImageData, &GetMaskData]()
+    {
+        // Set image data to nodata / 0
+        {
+            auto imageDataAndBlock = GetImageData();
+            auto pImageData = imageDataAndBlock.first;
+            auto poBlock = imageDataAndBlock.second;
+            if (pImageData)
+            {
+                const int nDTSize = GDALGetDataTypeSizeBytes(eImageDT);
+                if (m_bHasNoData)
+                {
+                    GDALCopyWords64(&m_dfNoData, GDT_Float64, 0, pImageData,
+                                    eImageDT, nDTSize, nPixels);
+                }
+                else
+                {
+                    memset(pImageData, 0, nPixels * nDTSize);
+                }
+            }
+            if (poBlock)
+                poBlock->DropLock();
+        }
+
+        // Set mask band to 0 (when it exists)
+        if (m_poMaskBand || m_bIsMask)
+        {
+            auto maskDataAndBlock = GetMaskData();
+            auto pMaskData = maskDataAndBlock.first;
+            auto poBlock = maskDataAndBlock.second;
+            if (pMaskData)
+            {
+                const size_t nSize =
+                    static_cast<size_t>(nBlockXSize) * nBlockYSize;
+                memset(pMaskData, 0, nSize);
+            }
+            if (poBlock)
+                poBlock->DropLock();
+        }
+    };
+
+    // Fetch block data from fras_blk_XXX layer
+    const int nGDALBandId = m_bIsMask ? 1 : nBand;
+    auto oIter = poGDS->m_oMapGDALBandToGDBBandId.find(nGDALBandId);
+    if (oIter == poGDS->m_oMapGDALBandToGDBBandId.end())
+    {
+        CPLError(CE_Failure, CPLE_AppDefined,
+                 "poGDS->m_oMapGDALBandToGDBBandId.find(%d) failed",
+                 nGDALBandId);
+    }
+    const int nGDBRasterBandId = oIter->second;
+
+    CPLString osFilter;
+    /* osFilter.Printf("rasterband_id = %d AND rrd_factor = %d AND row_nbr = %d "
+                    "AND col_nbr = %d",
+                    nGDBRasterBandId,
+                    m_nOverviewLevel, nBlockYOff, nBlockXOff);
+    */
+    osFilter.Printf("block_key = '0000%04X%02X%04X%04X'", nGDBRasterBandId,
+                    m_nOverviewLevel, nBlockYOff, nBlockXOff);
+    // CPLDebug("OpenFileGDB", "Request %s", osFilter.c_str());
+    poLyr->SetAttributeFilter(osFilter.c_str());
+    auto poFeature = std::unique_ptr<OGRFeature>(poLyr->GetNextFeature());
+    const int nImageDTSize = GDALGetDataTypeSizeBytes(eImageDT);
+    if (!poFeature)
+    {
+        // Missing blocks are legit
+        FillMissingBlock();
+        return CE_None;
+    }
+    const int nFieldIdx = poFeature->GetFieldIndex("block_data");
+    CPLAssert(nFieldIdx >= 0);
+    int nInBytes = 0;
+    if (!poFeature->IsFieldSetAndNotNull(nFieldIdx))
+    {
+        // block_data unset found on ForestFalls.gdb
+        FillMissingBlock();
+        return CE_None;
+    }
+    const GByte *pabyData = poFeature->GetFieldAsBinary(nFieldIdx, &nInBytes);
+    if (nInBytes == 0)
+    {
+        CPLError(CE_Failure, CPLE_AppDefined, "Image block is empty");
+        return CE_Failure;
+    }
+
+    // The input buffer may be concatenated with a 1-bit binary mask
+    const size_t nImageSize = nPixels * nImageDTSize;
+    const int nImageBitWidth =
+        m_poMainBand ? m_poMainBand->m_nBitWidth : m_nBitWidth;
+    const size_t nImageSizePacked = (nPixels * nImageBitWidth + 7) / 8;
+    const size_t nBinaryMaskSize = (nPixels + 7) / 8;
+    const size_t nImageSizeWithBinaryMask = nImageSizePacked + nBinaryMaskSize;
+
+    // Unpack 1-bit, 2-bit, 4-bit data to full byte
+    const auto ExpandSubByteData =
+        [nPixels, nImageBitWidth](const GByte *pabyInput, void *pDstBuffer)
+    {
+        CPLAssert(nImageBitWidth < 8);
+
+        size_t iBitOffset = 0;
+        for (size_t i = 0; i < nPixels; ++i)
+        {
+            unsigned nOutWord = 0;
+
+            for (int iBit = 0; iBit < nImageBitWidth; ++iBit)
+            {
+                if (pabyInput[iBitOffset >> 3] & (0x80 >> (iBitOffset & 7)))
+                {
+                    nOutWord |= (1 << (nImageBitWidth - 1 - iBit));
+                }
+                ++iBitOffset;
+            }
+
+            static_cast<GByte *>(pDstBuffer)[i] = static_cast<GByte>(nOutWord);
+        }
+    };
+
+    const GByte *pabyMask = nullptr;
+    auto &abyTmpBuffer =
+        m_poMainBand ? m_poMainBand->m_abyTmpBuffer : m_abyTmpBuffer;
+
+    switch (poGDS->m_eRasterCompression)
+    {
+        case OGROpenFileGDBDataSource::Compression::NONE:
+        {
+            if (static_cast<unsigned>(nInBytes) != nImageSizePacked &&
+                static_cast<unsigned>(nInBytes) != nImageSizeWithBinaryMask)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Not expected number of input bytes: %d", nInBytes);
+                return CE_Failure;
+            }
+
+            auto imageDataAndBlock = GetImageData();
+            auto pImageData = imageDataAndBlock.first;
+            auto poBlock = imageDataAndBlock.second;
+
+            if (pImageData)
+            {
+                if (nImageSizePacked == nImageSize)
+                {
+                    memcpy(pImageData, pabyData, nImageSize);
+#ifdef CPL_LSB
+                    if (nImageDTSize > 1)
+                    {
+                        GDALSwapWordsEx(pImageData, nImageDTSize, nPixels,
+                                        nImageDTSize);
+                    }
+#endif
+                }
+                else
+                {
+                    ExpandSubByteData(pabyData, pImageData);
+                }
+            }
+            if (poBlock)
+                poBlock->DropLock();
+
+            if (static_cast<unsigned>(nInBytes) == nImageSizeWithBinaryMask)
+                pabyMask = pabyData + nImageSizePacked;
+            break;
+        }
+
+        case OGROpenFileGDBDataSource::Compression::LZ77:
+        {
+            if (abyTmpBuffer.empty())
+            {
+                try
+                {
+                    abyTmpBuffer.resize(nImageSizeWithBinaryMask);
+                }
+                catch (const std::bad_alloc &e)
+                {
+                    CPLError(CE_Failure, CPLE_OutOfMemory, "%s", e.what());
+                    return CE_Failure;
+                }
+            }
+
+            size_t nOutBytes = 0;
+            if (!CPLZLibInflate(pabyData, nInBytes, abyTmpBuffer.data(),
+                                abyTmpBuffer.size(), &nOutBytes) ||
+                !(nOutBytes == nImageSizePacked ||
+                  nOutBytes == nImageSizeWithBinaryMask))
+            {
+                CPLError(
+                    CE_Failure, CPLE_AppDefined,
+                    "CPLZLibInflate() failed: nInBytes = %u, nOutBytes = %u, "
+                    "nImageSizePacked = %u, "
+                    "nImageSizeWithBinaryMask = %u",
+                    unsigned(nInBytes), unsigned(nOutBytes),
+                    unsigned(nImageSizePacked),
+                    unsigned(nImageSizeWithBinaryMask));
+                return CE_Failure;
+            }
+
+            auto imageDataAndBlock = GetImageData();
+            auto pImageData = imageDataAndBlock.first;
+            auto poBlock = imageDataAndBlock.second;
+
+            if (pImageData)
+            {
+                if (nImageSizePacked == nImageSize)
+                {
+                    memcpy(pImageData, abyTmpBuffer.data(), nImageSize);
+#ifdef CPL_LSB
+                    if (nImageDTSize > 1)
+                    {
+                        GDALSwapWordsEx(pImageData, nImageDTSize, nPixels,
+                                        nImageDTSize);
+                    }
+#endif
+                }
+                else
+                {
+                    ExpandSubByteData(abyTmpBuffer.data(), pImageData);
+                }
+            }
+            if (poBlock)
+                poBlock->DropLock();
+
+            if (nOutBytes == nImageSizeWithBinaryMask)
+                pabyMask = abyTmpBuffer.data() + nImageSizePacked;
+            break;
+        }
+
+        case OGROpenFileGDBDataSource::Compression::JPEG:
+        {
+            if (GDALGetDriverByName("JPEG") == nullptr)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined, "JPEG driver missing");
+                return CE_Failure;
+            }
+
+            if (static_cast<unsigned>(nInBytes) < 5)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Not expected number of input bytes: %d", nInBytes);
+                return CE_Failure;
+            }
+            uint32_t nJPEGSize = nInBytes - 1;
+            uint32_t nJPEGOffset = 1;
+            if (pabyData[0] == 0xFE)
+            {
+                // JPEG followed by binary mask
+                memcpy(&nJPEGSize, pabyData + 1, sizeof(uint32_t));
+                CPL_LSBPTR32(&nJPEGSize);
+                if (nJPEGSize > static_cast<unsigned>(nInBytes - 5))
+                {
+                    CPLError(CE_Failure, CPLE_AppDefined,
+                             "Invalid nJPEGSize = %u", nJPEGSize);
+                    return CE_Failure;
+                }
+                nJPEGOffset = 5;
+
+                if (abyTmpBuffer.empty())
+                {
+                    try
+                    {
+                        abyTmpBuffer.resize(nBinaryMaskSize);
+                    }
+                    catch (const std::bad_alloc &e)
+                    {
+                        CPLError(CE_Failure, CPLE_OutOfMemory, "%s", e.what());
+                        return CE_Failure;
+                    }
+                }
+                size_t nOutBytes = 0;
+                if (CPLZLibInflate(
+                        pabyData + 5 + nJPEGSize, nInBytes - 5 - nJPEGSize,
+                        abyTmpBuffer.data(), nBinaryMaskSize, &nOutBytes) &&
+                    nOutBytes == nBinaryMaskSize)
+                {
+                    pabyMask = abyTmpBuffer.data();
+                }
+                else
+                {
+                    CPLError(CE_Warning, CPLE_AppDefined,
+                             "Cannot decompress binary mask");
+                }
+            }
+            else if (pabyData[0] != 1)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined, "Invalid JPEG blob");
+                return CE_Failure;
+            }
+
+            VSILFILE *fp = VSIFOpenL("tmp.jpg", "wb");
+            VSIFWriteL(pabyData + nJPEGOffset, nJPEGSize, 1, fp);
+            VSIFCloseL(fp);
+
+            CPLString osTmpFilename;
+            osTmpFilename.Printf("/vsimem/_openfilegdb/%p.jpg", this);
+            VSIFCloseL(VSIFileFromMemBuffer(
+                osTmpFilename.c_str(),
+                const_cast<GByte *>(pabyData + nJPEGOffset), nJPEGSize, false));
+            const char *const apszDrivers[] = {"JPEG", nullptr};
+            auto poJPEGDS = std::unique_ptr<GDALDataset>(GDALDataset::Open(
+                osTmpFilename.c_str(), GDAL_OF_RASTER, apszDrivers));
+            if (!poJPEGDS)
+            {
+                VSIUnlink(osTmpFilename.c_str());
+                CPLError(CE_Failure, CPLE_AppDefined, "Cannot open JPEG blob");
+                return CE_Failure;
+            }
+            if (poJPEGDS->GetRasterCount() != 1 ||
+                poJPEGDS->GetRasterXSize() != nBlockXSize ||
+                poJPEGDS->GetRasterYSize() != nBlockYSize)
+            {
+                VSIUnlink(osTmpFilename.c_str());
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Inconsistent characteristics of JPEG blob");
+                return CE_Failure;
+            }
+
+            auto imageDataAndBlock = GetImageData();
+            auto pImageData = imageDataAndBlock.first;
+            auto poBlock = imageDataAndBlock.second;
+
+            const CPLErr eErr =
+                pImageData
+                    ? poJPEGDS->GetRasterBand(1)->RasterIO(
+                          GF_Read, 0, 0, nBlockXSize, nBlockYSize, pImageData,
+                          nBlockXSize, nBlockYSize, eImageDT, 0, 0, nullptr)
+                    : CE_None;
+            VSIUnlink(osTmpFilename.c_str());
+            if (poBlock)
+                poBlock->DropLock();
+
+            if (eErr != CE_None)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined, "Cannot read JPEG blob");
+                return CE_Failure;
+            }
+
+            break;
+        }
+
+        case OGROpenFileGDBDataSource::Compression::JPEG2000:
+        {
+            const char *const apszDrivers[] = {"JP2KAK",      "JP2ECW",
+                                               "JP2OpenJPEG", "JP2MrSID",
+                                               "JP2Lura",     nullptr};
+            bool bFoundJP2Driver = false;
+            for (const char *pszDriver : apszDrivers)
+            {
+                if (pszDriver && GDALGetDriverByName(pszDriver))
+                {
+                    bFoundJP2Driver = true;
+                    break;
+                }
+            }
+            if (!bFoundJP2Driver)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Did not find any JPEG2000 capable driver");
+                return CE_Failure;
+            }
+
+            if (static_cast<unsigned>(nInBytes) < 5)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Not expected number of input bytes: %d", nInBytes);
+                return CE_Failure;
+            }
+            uint32_t nJPEGSize = nInBytes - 1;
+            uint32_t nJPEGOffset = 1;
+            if (pabyData[0] == 0xFF)
+            {
+                // JPEG2000 followed by binary mask
+                memcpy(&nJPEGSize, pabyData + 1, sizeof(uint32_t));
+                CPL_LSBPTR32(&nJPEGSize);
+                if (nJPEGSize > static_cast<unsigned>(nInBytes - 5))
+                {
+                    CPLError(CE_Failure, CPLE_AppDefined,
+                             "Invalid nJPEGSize = %u", nJPEGSize);
+                    return CE_Failure;
+                }
+                nJPEGOffset = 5;
+
+                if (abyTmpBuffer.empty())
+                {
+                    try
+                    {
+                        abyTmpBuffer.resize(nBinaryMaskSize);
+                    }
+                    catch (const std::bad_alloc &e)
+                    {
+                        CPLError(CE_Failure, CPLE_OutOfMemory, "%s", e.what());
+                        return CE_Failure;
+                    }
+                }
+                size_t nOutBytes = 0;
+                if (CPLZLibInflate(
+                        pabyData + 5 + nJPEGSize, nInBytes - 5 - nJPEGSize,
+                        abyTmpBuffer.data(), nBinaryMaskSize, &nOutBytes) &&
+                    nOutBytes == nBinaryMaskSize)
+                {
+                    pabyMask = abyTmpBuffer.data();
+                }
+                else
+                {
+                    CPLError(CE_Warning, CPLE_AppDefined,
+                             "Cannot decompress binary mask");
+                }
+            }
+            else if (pabyData[0] != 0)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined, "Invalid JPEG2000 blob");
+                return CE_Failure;
+            }
+
+            CPLString osTmpFilename;
+            osTmpFilename.Printf("/vsimem/_openfilegdb/%p.j2k", this);
+            VSIFCloseL(VSIFileFromMemBuffer(
+                osTmpFilename.c_str(),
+                const_cast<GByte *>(pabyData + nJPEGOffset), nJPEGSize, false));
+            auto poJP2KDS = std::unique_ptr<GDALDataset>(GDALDataset::Open(
+                osTmpFilename.c_str(), GDAL_OF_RASTER, apszDrivers));
+            if (!poJP2KDS)
+            {
+                VSIUnlink(osTmpFilename.c_str());
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Cannot open JPEG2000 blob");
+                return CE_Failure;
+            }
+            if (poJP2KDS->GetRasterCount() != 1 ||
+                poJP2KDS->GetRasterXSize() != nBlockXSize ||
+                poJP2KDS->GetRasterYSize() != nBlockYSize)
+            {
+                VSIUnlink(osTmpFilename.c_str());
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Inconsistent characteristics of JPEG2000 blob");
+                return CE_Failure;
+            }
+
+            auto imageDataAndBlock = GetImageData();
+            auto pImageData = imageDataAndBlock.first;
+            auto poBlock = imageDataAndBlock.second;
+
+            const CPLErr eErr =
+                pImageData
+                    ? poJP2KDS->GetRasterBand(1)->RasterIO(
+                          GF_Read, 0, 0, nBlockXSize, nBlockYSize, pImageData,
+                          nBlockXSize, nBlockYSize, eImageDT, 0, 0, nullptr)
+                    : CE_None;
+            VSIUnlink(osTmpFilename.c_str());
+            if (poBlock)
+                poBlock->DropLock();
+
+            if (eErr != CE_None)
+            {
+                CPLError(CE_Failure, CPLE_AppDefined,
+                         "Cannot read JPEG2000 blob");
+                return CE_Failure;
+            }
+
+            break;
+        }
+    }
+
+    if (m_bIsMask || m_poMaskBand)
+    {
+        auto maskDataAndBlock = GetMaskData();
+        auto pMaskData = maskDataAndBlock.first;
+        auto poBlock = maskDataAndBlock.second;
+
+        if (pMaskData)
+        {
+            if (pabyMask)
+            {
+                // Unpack 1-bit array
+                for (size_t i = 0; i < nPixels; ++i)
+                {
+                    static_cast<GByte *>(pMaskData)[i] =
+                        (pabyMask[i / 8] & (0x80 >> (i & 7))) ? 255 : 0;
+                }
+            }
+            else
+            {
+                // No explicit mask in source block --> all valid
+                memset(pMaskData, 255, nPixels);
+            }
+        }
+
+        if (poBlock)
+            poBlock->DropLock();
+    }
+    else if (m_bHasNoData)
+    {
+        if (eImageDT == GDT_Byte)
+        {
+            SetNoDataFromMask<uint8_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_Int8)
+        {
+            SetNoDataFromMask<int8_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_UInt16)
+        {
+            SetNoDataFromMask<uint16_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_Int16)
+        {
+            SetNoDataFromMask<int16_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_UInt32)
+        {
+            SetNoDataFromMask<uint32_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_Int32)
+        {
+            SetNoDataFromMask<int32_t>(pImage, pabyMask, nPixels, m_dfNoData);
+        }
+        else if (eImageDT == GDT_Float32)
+        {
+            if (pabyMask)
+            {
+                for (size_t i = 0; i < nPixels; ++i)
+                {
+                    if (!(pabyMask[i / 8] & (0x80 >> (i & 7))))
+                    {
+                        static_cast<float *>(pImage)[i] =
+                            static_cast<float>(m_dfNoData);
+                    }
+                }
+            }
+        }
+        else if (eImageDT == GDT_Float64)
+        {
+            if (pabyMask)
+            {
+                for (size_t i = 0; i < nPixels; ++i)
+                {
+                    if (!(pabyMask[i / 8] & (0x80 >> (i & 7))))
+                    {
+                        static_cast<double *>(pImage)[i] = m_dfNoData;
+                    }
+                }
+            }
+        }
+        else
+        {
+            CPLAssert(false);
+        }
+    }
+
+#if 0
+    printf("Data:\n"); // ok
+    if (eDataType == GDT_Byte)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<GByte *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_Int8)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<int8_t *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_UInt16)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<uint16_t *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_Int16)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<int16_t *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_UInt32)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<uint32_t *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_Int32)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       static_cast<int32_t *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_Float32)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%.8g ", // ok
+                       static_cast<float *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+    else if (eDataType == GDT_Float64)
+    {
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%.18g ", // ok
+                       static_cast<double *>(pImage)[y * nBlockXSize + x]);
+            }
+            printf("\n"); // ok
+        }
+    }
+#endif
+
+#if 0
+    if (pabyMask)
+    {
+        printf("Mask:\n"); // ok
+        for (int y = 0; y < nBlockYSize; ++y)
+        {
+            for (int x = 0; x < nBlockXSize; ++x)
+            {
+                printf("%d ", // ok
+                       (pabyMask[(y * nBlockXSize + x) / 8] &
+                        (0x80 >> ((y * nBlockXSize + x) & 7)))
+                           ? 1
+                           : 0);
+            }
+            printf("\n"); // ok
+        }
+    }
+#endif
+
+    return CE_None;
+}
+
+/************************************************************************/
+/*                         GetDefaultRAT()                              */
+/************************************************************************/
+
+GDALRasterAttributeTable *GDALOpenFileGDBRasterBand::GetDefaultRAT()
+{
+    if (m_poRAT)
+        return m_poRAT.get();
+    if (poDS->GetRasterCount() > 1 || m_bIsMask)
+        return nullptr;
+    auto poGDS = cpl::down_cast<OGROpenFileGDBDataSource *>(poDS);
+    const std::string osVATTableName(
+        std::string("VAT_").append(poGDS->m_osRasterLayerName));
+    // Instanciate a new dataset, os that the RAT is standalone
+    auto poDSNew = cpl::make_unique<OGROpenFileGDBDataSource>();
+    GDALOpenInfo oOpenInfo(poGDS->m_osDirName.c_str(), GA_ReadOnly);
+    if (!poDSNew->Open(&oOpenInfo))
+        return nullptr;
+    auto poVatLayer = poDSNew->BuildLayerFromName(osVATTableName.c_str());
+    if (!poVatLayer)
+        return nullptr;
+    m_poRAT = cpl::make_unique<GDALOpenFileGDBRasterAttributeTable>(
+        std::move(poDSNew), osVATTableName, std::move(poVatLayer));
+    return m_poRAT.get();
+}