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#jira UE-147096 #preflight 624db355334cad33ceffe1f8 #rb andrew.rodham #ROBOMERGE-AUTHOR: max.chen #ROBOMERGE-SOURCE: CL 19657014 via CL 19657393 via CL 19657442 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v938-19570697) [CL 19665925 by max chen in ue5-main branch]
108 lines
4.2 KiB
C++
108 lines
4.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "EntitySystem/MovieScenePropertyRegistry.h"
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#include "MovieSceneFwd.h"
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#include "UObject/Class.h"
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#include "UObject/Object.h"
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#include "EntitySystem/MovieScenePropertyBinding.h"
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#include "MovieSceneCommonHelpers.h"
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namespace UE
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{
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namespace MovieScene
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{
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TOptional<uint16> ComputeFastPropertyPtrOffset(UClass* ObjectClass, const FMovieScenePropertyBinding& PropertyBinding)
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{
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using namespace UE::MovieScene;
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FProperty* Property = ObjectClass->FindPropertyByName(PropertyBinding.PropertyName);
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const bool bFoundSetter = (!Property || Property->HasSetter());
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if (bFoundSetter)
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{
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return TOptional<uint16>();
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}
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// @todo: Constructing FNames from strings is _very_ costly and we really shouldn't be doing this at runtime.
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UFunction* Setter = ObjectClass->FindFunctionByName(*(FString("Set") + PropertyBinding.PropertyName.ToString()));
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if (Property && !Setter)
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{
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// @todo: We disable fast offsets for all bools atm becasue there is no way of knowing whether the property
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// represents a raw bool, or a bool : 1 or uint8 : 1;
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FBoolProperty* BoolProperty = CastField<FBoolProperty>(Property);
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if (BoolProperty)
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{
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return TOptional<uint16>();
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}
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UObject* DefaultObject = ObjectClass->GetDefaultObject();
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uint8* PropertyAddress = Property->ContainerPtrToValuePtr<uint8>(DefaultObject);
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int32 PropertyOffset = PropertyAddress - reinterpret_cast<uint8*>(DefaultObject);
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if (PropertyOffset >= 0 && PropertyOffset < int32(uint16(0xFFFF)))
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{
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return uint16(PropertyOffset);
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}
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}
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return TOptional<uint16>();
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}
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TOptional<FResolvedFastProperty> FPropertyRegistry::ResolveFastProperty(UObject* Object, const FMovieScenePropertyBinding& PropertyBinding, FCustomAccessorView CustomAccessors)
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{
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UClass* Class = Object->GetClass();
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if (CustomAccessors.Num() != 0)
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{
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const int32 CustomPropertyIndex = CustomAccessors.FindCustomAccessorIndex(Class, PropertyBinding.PropertyPath);
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if (CustomPropertyIndex != INDEX_NONE)
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{
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check(CustomPropertyIndex < MAX_uint16);
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// This property has a custom property accessor that can apply properties through a static function ptr.
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// Just add the function ptrs to the property entity so they can be called directly
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return FResolvedFastProperty(TInPlaceType<FCustomPropertyIndex>(), FCustomPropertyIndex{ static_cast<uint16>(CustomPropertyIndex) });
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}
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}
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if (PropertyBinding.CanUseClassLookup())
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{
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TOptional<uint16> FastPtrOffset = ComputeFastPropertyPtrOffset(Class, PropertyBinding);
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if (FastPtrOffset.IsSet())
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{
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// This property/object combination has no custom setter function and a constant property offset from the base ptr for all instances of the object.
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return FResolvedFastProperty(TInPlaceType<uint16>(), FastPtrOffset.GetValue());
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}
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}
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return TOptional<FResolvedFastProperty>();
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}
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TOptional<FResolvedProperty> FPropertyRegistry::ResolveProperty(UObject* Object, const FMovieScenePropertyBinding& PropertyBinding, FCustomAccessorView CustomAccessors)
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{
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TOptional< FResolvedFastProperty > FastProperty = FPropertyRegistry::ResolveFastProperty(Object, PropertyBinding, CustomAccessors);
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if (FastProperty.IsSet())
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{
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if (const FCustomPropertyIndex* CustomIndex = FastProperty->TryGet<FCustomPropertyIndex>())
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{
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return FResolvedProperty(TInPlaceType<FCustomPropertyIndex>(), *CustomIndex);
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}
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return FResolvedProperty(TInPlaceType<uint16>(), FastProperty->Get<uint16>());
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}
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// None of the above optimized paths can apply to this property (probably because it has a setter function or because it is within a compound property), so we must use the slow property bindings
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TSharedPtr<FTrackInstancePropertyBindings> SlowBindings = MakeShared<FTrackInstancePropertyBindings>(PropertyBinding.PropertyName, PropertyBinding.PropertyPath.ToString());
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if (SlowBindings->GetProperty(*Object) == nullptr)
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{
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UE_LOG(LogMovieSceneECS, Warning, TEXT("Unable to resolve property '%s' from '%s' instance '%s'"), *PropertyBinding.PropertyPath.ToString(), *Object->GetClass()->GetName(), *Object->GetName());
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return TOptional<FResolvedProperty>();
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}
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return FResolvedProperty(TInPlaceType<TSharedPtr<FTrackInstancePropertyBindings>>(), SlowBindings);
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}
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} // namespace MovieScene
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} // namespace UE
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