The call to UpdateInstanceTransform within UInstancedStaticMeshComponent::UpdateInstanceTransformById(..) sends bTeleport in place of bMarkRenderStateDirty that was added as part of Unreal Engine 5.5.
UpdateInstanceTransform(PrimitiveInstanceDataManager.IdToIndex(InstanceId), NewInstanceTransform, bWorldSpace, bTeleport);
ENGINE_API virtual bool UpdateInstanceTransform(int32 InstanceIndex, const FTransform& NewInstanceTransform, bool bWorldSpace=false, bool bMarkRenderStateDirty=false, bool bTeleport=false);
This can also be observed in the latest on //UE5/Main (CL 38281066).
1. Open any blank project’s code solution
2. Open the file InstancedStaticMesh.cpp within the engine
3. Inspect the function UInstancedStaticMeshComponent::UpdateInstanceTransformById
4. Observe the call to UpdateInstanceTransform passes bTeleport in place of the new parameter bMarkRenderStateDirty instead of bTeleport
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-231099 in the post.
| 1 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 5.6, 5.5 |
| Target Fix | 5.6 |
| Created | Nov 20, 2024 |
|---|---|
| Updated | Dec 15, 2024 |