Unreal Engine Porting from UE4.0 to UE5.0
Complete migration of game project from Unreal Engine 4.0 to 5.0 with enhanced graphics and performance.
Client Request
Ensure a full transition of a AAA game from Unreal Engine 4 to Unreal Engine 5, while preserving all existing game engine modifications. Our responsibility was limited to transitioning a few key systems, specifically rendering and physics.
Problems and Challenges
In Unreal Engine 5, PhysX (along with APEX Cloth and APEX Destruction) was removed and replaced with the Chaos Physics system. While some physics assets are automatically upgraded in UE5, the client's game contained a large number of destructible objects. This required us to manually recreate those destructible assets using Chaos Destruction, as there is no direct conversion from APEX.
In addition, although some code required only minor modifications and could be handled through semi-automated merging, other parts—especially rendering systems like the particle system—required manual review. Due to the scale of destructible objects and their tight integration with rendering, we had to discard certain changes related to deprecated systems to ensure compatibility and maintain performance.
What Was Done
Successfully ensured a smooth transition of rendering code and physics systems from the UE4 development branch to the target UE5 Perforce depot.
Physics System Migration
Manual recreation of destructible assets using Chaos Destruction system, replacing deprecated APEX Destruction components.
Rendering System Transition
Manual review and update of particle systems and other rendering components to ensure UE5 compatibility.
Code Migration Strategy
Strategic approach combining semi-automated merging for simple changes and manual review for complex systems.
Performance Optimization
Discarded deprecated system dependencies to maintain optimal performance in the new engine version.
Key Results
Technologies & Tools
Ready to Upgrade Your Game Engine?
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