#rnx
#rb none
#ROBOMERGE-SOURCE: CL 10869241 via CL 10869527 via CL 10869904
#ROBOMERGE-BOT: (v613-10869866)
[CL 10870586 by ryan durand in Main branch]
#rb chris.gagnon
#jira UE-77438
#ROBOMERGE-SOURCE: CL 7452439 in //UE4/Release-4.23/...
#ROBOMERGE-BOT: RELEASE (Release-4.23 -> Main) (v371-7306989)
[CL 7452444 by simon therriault in Main branch]
#rb chris.gagnon
#jira UE-69621
#ROBOMERGE-SOURCE: CL 4948231 in //UE4/Release-4.22/...
#ROBOMERGE-BOT: RELEASE (Release-4.22 -> Main)
[CL 4948232 by simon therriault 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]
Move the Apple Driver Monitor stats into their own stat groups, DriverMonitor has the common stats, DriverMonitorAMD/Intel/Nvidia have the vendor/GPU specific stats. The Metal and OpenGL RHIs update the driver monitor stats group for the current GPU at the appropriate time.
Change 2898950 on 2016/03/08 by Mark.Satterthwaite
More shader cache code documentation.
Change 2898952 on 2016/03/08 by Michael.Trepka
Check GPU driver version and warn of bad drivers only on Windows
Change 2898964 on 2016/03/08 by Mark.Satterthwaite
Only verify the vertex attribute layout for Metal in debug builds or when using development with the debug layer turned on. It reduces performance significantly and isn't all that helpful unless you are attempting to debug a mismatch.
Change 2898973 on 2016/03/08 by Mark.Satterthwaite
Switch uniform buffers to managed memory on Mac as this is more appropriate for AMD & Nvidia GPUs.
Change 2898988 on 2016/03/08 by Mark.Satterthwaite
Simplify MetalContext by having only one SubmitCommandsHint implementation.
Change 2899011 on 2016/03/08 by Mark.Satterthwaite
Duplicate 4.11 CL #2898988:
Proper fix for UE-25804 - we have to manually expand PF_G8 + SRGB to RGBA8_sRGB - this then fixes UE-27483.
#jira UE-25804
#jira UE-27483
Change 2899024 on 2016/03/08 by Mark.Satterthwaite
Duplicate 4.11 CL #2887365 & CL #2887583:
Allow InfiltratorDemoEditor under Metal to issue a query buffer reset without crashing - the function that switches to the new query buffer needs to reapply some of the draw-state so that future commands don't dereference nil.
#jira UE-27513
My earlier fix for UE-27513 overlooked various internal details that meant it wouldn't restore state correctly, would fail validation and could crash in a new place. This version will ensure that cached state is only reset when it is appropriate to do so and will restore it correct when doing a query buffer reset.
#jira UE-27513
Change 2899418 on 2016/03/08 by Daniel.Lamb
Added support for textboxes in the editor to convert uasset filenames into long package names. As this is more useful to the cooker and more portable for projects.
#codereview Matt.Kuhlenschmidt
#jira UE-27785
Change 2899419 on 2016/03/08 by Daniel.Lamb
Added support for passing -opengl command through to launch on if the editor is started with it.
#codereview Michael.Trepka
Change 2900846 on 2016/03/09 by Mark.Satterthwaite
Reimplement Metal object lifetime tracking as stats in the stat-group, though the old system is maintained as a debug-only tool that could (and probably should) be extended to track over/under-release bugs. Currently the texture count will be distorted by texture SRVs so will need improvement but other stats should be reliable. In order to properly report the number of buffers the TResourcePool policy class must now define a FreeResource function, so I've added them to the appropriate places too.
Change 2900853 on 2016/03/09 by Mark.Satterthwaite
Optimise away empty encoders that don't perform a clear operation on AMD & Intel, but not Nvidia or non-Mac Metal devices. This should slightly improve performance.
Change 2900927 on 2016/03/09 by Mark.Satterthwaite
Implemented operation threshold submission of Metal command buffers to keep the GPU busier and not just idle waiting for the CPU. Whenever rhi.Metal.CommandBufferCommitThreshold is set to a value >0 and the current command buffer has >= draw/dispatch operations outstanding then the command-buffer will be committed at the next encoder boundary. The default value is 100 operations which is currently arbitrary and the feature can be disabled by setting the value to <= 0 in which case only explicit submissions will occur as previously.
Change 2901310 on 2016/03/09 by Mark.Satterthwaite
Change OneColor clear shader setup so that it works with parallel encoding in Metal.
Change 2903002 on 2016/03/10 by Mark.Satterthwaite
Instantiate the OneColor shaders once in Metal.
Change 2903274 on 2016/03/10 by Mark.Satterthwaite
Remove more unnecessary parallel execution stalls from MetalRHI.
Change 2903402 on 2016/03/10 by Mark.Satterthwaite
Implement Metal support for index buffer SRVs.
Change 2903419 on 2016/03/10 by Mark.Satterthwaite
Always use Managed memory on Mac Metal for buffers.
Change 2905206 on 2016/03/11 by Mark.Satterthwaite
Worked around UE-27818 "ElementalDemo Causes Invalid Rendering on AMD GPUs" - recent changes to allow mesh particles to write to velocity leave a texture-buffer unbound & then use a uniform value & an if-branch to guard against access but AMD's Mac GL driver notices that the buffer is referenced in the shader but not bound & promptly tries to fallback to Apple's S/W renderer regardless of what the uniform value is. That's legal behaviour for an OpenGL implementation so the C++ code has been changed to allocate and write the current transforms into the buffer for OpenGL when they wouldn't otherwise be provided. This is sufficient to avoid the problem without affecting any other API.
Change 2906217 on 2016/03/11 by Nick.Shin
re-enabled http network file server
it was disabled in CL: #2790193
#jira UE-22166 HTML5 Cook on the fly will launch and then close browser
Change 2908203 on 2016/03/14 by Michael.Trepka
Merging //UE4/Dev-Main to Dev-Platform (//UE4/Dev-Platform). Everything but SSF lib.
Change 2908553 on 2016/03/14 by Mark.Satterthwaite
Force a submit & wait in Metal when contexts are being destroyed to prevent kernel panics in drivers which continue to process the now abandoned command-queue and encounter invalid resources (because we destroy them on shutdown).
Change 2908595 on 2016/03/14 by Michael.Trepka
Fixed iOS compile error in MetalUniformBuffer.cpp
#codereview Mark.Satterthwaite
Change 2910106 on 2016/03/15 by Mark.Satterthwaite
Use a dispatch_semaphore not an FEvent for Metal free-list synchronisation as the dispatch_worker threads can't be properly setup for FStats and this causes problems.
Change 2910107 on 2016/03/15 by Mark.Satterthwaite
Fix Metal reporting of GPU memory through the RHI as it is in bytes, not MB.
Change 2910138 on 2016/03/15 by Mark.Satterthwaite
Properly retain/release dispatch_semaphore for Metal command buffer completion block & allow uniform buffer creation on parallel encoding thread.
Change 2911735 on 2016/03/16 by Nick.Shin
housekeeping
removing extra and inconsistant whitespace as well as making tabs & spaces consistant
[CL 2936662 by Josh Adams in Main branch]
