Most the changes are due to InventoryObjectList* changing to LLInventoryObject::object_list_t*, LLInventoryItem::II_FLAGS* changing to LLInventoryItemFlags::II_FLAGS* and also const'ing.
Certain perms for certain asset types(callcard&landmarks) have been laxed, as per LL's V2.
LLInventoryType now does lookups mostly though new lldictionary class.
LLLandmark using boost for callbacks, instead of custom class structure.
ScriptsCanShowUI:false disables LLMapDestination (from V2)
SH_SpamHandler, derived from Cryogenic's spam blocking:
If flooded by an object, all objects of same owner get blocked.
If flooded by an avatar, avatar will be blocked.
Dialog flood prevention. (Objects only)
Calling card flood prevention (Avatar only)
Chat flood prevention. (Avatar and objects)
IM/Inventory offer flood prevention (Avatar and objects)
See additions to settings_sh.xml for details on new settings pertaining to anti-spam.
-AF change no longer reloads the window to apply. Doing such isn't needed anymore.
-AA change no longer reloads the window to apply, IFF RenderUseFBO is true.
-AA change, IFF RenderUseFBO is false, reloads window. Texture issues under this scenario should be resolved.
-LLComboBox now updates control_name it's linked to, automatically.
-New LLComboBox Behavor when paired with new AA/AF application changes renders LLFloaterHardwareSettings::apply() pointless, EXCEPT for when changing AA while FBOs are off.
LL has since removed high-res snapshots using render targets. I find this change to be favorable, as rendertargets were very finicky to get working with anti-aliasing. Also, deferred rendering uses many rendertargets that depend on screen resolution. Changing resolution every screenshot is.. not very awesome.
There is some deviation from LL's viewer. I've kept the old tiled glow pass enabled for non-deferred, as it fixes issues with tile edges truncating glow propogation. However, this does no work with deferred yet. I need to pin down why. I assume using binding one of the RenderTargets is required for deferred.
Additionally, the usage of a RenderTarget for snapshots is what prevented me from fully enabling my supersampling settings. Now that that hurdle is gone, I consider including this new setting by default to be safe enough.
And a note: Do not remove the 'tiling' variable when merging with v2 changes, as singu's glow pass is 'special'. There are other fixes absent from LL's viewer that require knowing if the render is tiled or not. (water reflections/cloud freezing)