#rnx
#rb none
#ROBOMERGE-OWNER: ryan.durand
#ROBOMERGE-AUTHOR: ryan.durand
#ROBOMERGE-SOURCE: CL 10869210 via CL 10869511 via CL 10869900
#ROBOMERGE-BOT: (v613-10869866)
[CL 10870549 by ryan durand in Main branch]
Merging using Fortnite_Main<->Fortnite_ControlRig
#rb none
#ROBOMERGE-OWNER: helge.mathee
#ROBOMERGE-AUTHOR: helge.mathee
#ROBOMERGE-SOURCE: CL 7321580 via CL 7323175
#ROBOMERGE-BOT: (v371-7306989)
[CL 7323351 by helge mathee in Main branch]
#lockdown Nick.Penwarden
#rb none
==========================
MAJOR FEATURES + CHANGES
==========================
Change 3209340 on 2016/11/23 by Ben.Marsh
Convert UE4 codebase to an "include what you use" model - where every header just includes the dependencies it needs, rather than every source file including large monolithic headers like Engine.h and UnrealEd.h.
Measured full rebuild times around 2x faster using XGE on Windows, and improvements of 25% or more for incremental builds and full rebuilds on most other platforms.
* Every header now includes everything it needs to compile.
* There's a CoreMinimal.h header that gets you a set of ubiquitous types from Core (eg. FString, FName, TArray, FVector, etc...). Most headers now include this first.
* There's a CoreTypes.h header that sets up primitive UE4 types and build macros (int32, PLATFORM_WIN64, etc...). All headers in Core include this first, as does CoreMinimal.h.
* Every .cpp file includes its matching .h file first.
* This helps validate that each header is including everything it needs to compile.
* No engine code includes a monolithic header such as Engine.h or UnrealEd.h any more.
* You will get a warning if you try to include one of these from the engine. They still exist for compatibility with game projects and do not produce warnings when included there.
* There have only been minor changes to our internal games down to accommodate these changes. The intent is for this to be as seamless as possible.
* No engine code explicitly includes a precompiled header any more.
* We still use PCHs, but they're force-included on the compiler command line by UnrealBuildTool instead. This lets us tune what they contain without breaking any existing include dependencies.
* PCHs are generated by a tool to get a statistical amount of coverage for the source files using it, and I've seeded the new shared PCHs to contain any header included by > 15% of source files.
Tool used to generate this transform is at Engine\Source\Programs\IncludeTool.
[CL 3209342 by Ben Marsh in Main branch]
Optimization is enabled by default but is an engine setting in case it needs to be disabled (bOptimizeAnimBlueprintMemberVariableAccess).
Expanded FExposedValueHandler to also contain an array of source & dest properties (copy records) to copy between. These are resolved to read/write addresses on init & a simple memcpy at runtime instead of calling the usual generated custom event.
Custom events are not added at all if all properties use copy records. The event may still be added & called however as mixed-mode access is still supported (i.e. a thunk and a memcpy to different pin properties).
Unfortunately this required initialization of all ExposedValueHandlers (as I didnt want to add the branch overhead of lazy init) so all the anim nodes have needed a small change to call their base class Initialize().
[CL 2678504 by Thomas Sarkanen in Main branch]
