To reproduce this problem, i write a function like this
void UMyBlueprintFunctionLibrary::BeginRandomFoliage()
{
if (auto IFA = AInstancedFoliageActor::GetInstancedFoliageActorForCurrentLevel(GWorld))
{
TMap<UFoliageType*, FFoliageInfo*> FoliageMap = IFA->GetAllInstancesFoliageType();
for (auto& PerTypeFoliage : FoliageMap)
{
UHierarchicalInstancedStaticMeshComponent* HISM = PerTypeFoliage.Value->GetComponent();
if (HISM->GetInstanceCount() > 0)
{
static bool bLeft = false;
FTransform Transform;
HISM->GetInstanceTransform(0, Transform);
Transform.SetLocation(Transform.GetLocation() + FVector(0, bLeft ? 100 : -100, 0));
HISM->UpdateInstanceTransform(0, Transform, false);
bLeft ^= true;
}
}
}
}
and call it at the level blueprint
then like this,
I update instances[0] transform per 0.1 sec only, but why instances[1…n] is flicker?
but if i spawn a static mesh of this tree(non-instance), it works normally.
it is speed tree bug?
I noticed that issue Unreal Engine Issues and Bug Tracker (UE-61559), is it caused by the same reason?
how can i do to avoid to that?
