; =============================================================================
; ProjectEleri - IOS platform engine config
; =============================================================================
; Layered on top of Config/DefaultEngine.ini for the IOS target platform ONLY
; (config hierarchy pattern <Project>/Config/<PLATFORM>/<PLATFORM>Engine.ini,
; see UBT ConfigHierarchy.cs and FConfigCacheIni), so nothing in this file
; changes PC / Mac / Android behaviour.
;
; Purpose: benchmarking. Unreal's IOS defaults lock the game to 30 FPS and to
; the display's vertical sync; this file removes both.
;
; NOTE: the editor's Project Settings -> Platforms -> iOS panel is evaluated on
; the *host* platform (Mac) and therefore does not read this file - it will
; still display the engine defaults ("30 FPS", "Use VSync"). The values below
; are what the packaged IOS build actually uses.
;
; To revert: delete this file (or comment out the entries below).
; =============================================================================

[/Script/IOSRuntimeSettings.IOSRuntimeSettings]
; --- the 30 FPS lock --------------------------------------------------------
; Engine default is PUFRL_30 (Engine/Config/BaseEngine.ini + IOSRuntimeSettings
; ctor). That value is consumed twice:
;   * FIOSPlatformRHIFramePacer::IsEnabled() computes
;       FrameInterval = GetMaxRefreshRate() / FrameRateLock = 60 / 30 = 2
;     and runs its CADisplayLink at 60/2 = 30 Hz, which gates every rendered
;     frame -> a hard 30 FPS ceiling on device.
;   * FMetalDevice::FMetalDevice() stores it into GMetalPresentFramePacing,
;     which is used by presentDrawableAfterMinimumDuration().
; PUFRL_None parses to 0, so the pacer runs at the full refresh rate instead.
FrameRateLock=PUFRL_None

; FIOSPlatformRHIFramePacer::GetMaxRefreshRate() returns a hard-coded 60 unless
; this is True; with it enabled it returns [UIScreen mainScreen]
; .maximumFramesPerSecond, i.e. the real panel rate (120Hz on ProMotion devices).
; Required to benchmark above 60 FPS.
bEnableDynamicMaxFPS=True

; Emits <key>CADisableMinimumFrameDurationOnPhone</key><true/> into the Info.plist
; generated by UEDeployIOS. Without that key iOS clamps the app to 60Hz even when
; the frame pacer is allowed to go higher. It is a build-time value: rebuild the
; IOS target with UBT so Build/IOS/UBTGenerated/Info.Template.plist is regenerated
; (it is consumed by BUILD/BuildIOS.sh when xcodebuild builds the .app).
bSupportHighRefreshRates=True

[/Script/Engine.Engine]
; --- no frame rate smoothing ------------------------------------------------
; Frame rate smoothing is the only thing that applies SmoothedFrameRateRange
; (Config/DefaultEngine.ini currently has UpperBound=200). Engine/Config/
; BaseEngine.ini already ships bSmoothFrameRate=false, so this is belt and
; braces: it keeps the IOS frame rate uncapped even if the "Smooth Frame Rate"
; project setting is ever switched on in the editor, which would otherwise
; re-introduce a ceiling behind a setting that does not look IOS specific.
bSmoothFrameRate=False

[SystemSettings]
; --- no vsync ---------------------------------------------------------------
; Unreal derives bLockToVsync from this CVar (Runtime/Engine/Private/
; UnrealClient.cpp), which on Metal becomes CAMetalLayer.displaySyncEnabled:
; with the game running fullscreen, 0 => false => presents never wait for the
; display. It also stops the IOS frame pacer from re-tuning the CADisplayLink
; interval from rhi.SyncInterval (Engine/Config/Android/AndroidEngine.ini uses
; the same key, [ConsoleVariables] r.VSync=1, for the opposite reason).
r.VSync=0

; --- no FPS cap -------------------------------------------------------------
; t.MaxFPS <= 0 means uncapped (Runtime/Engine/Private/UnrealEngine.cpp, default
; is already 0 - set explicitly so no stray value can re-introduce a cap).
t.MaxFPS=0