Engine Tools for Performance on Open World Games
summary
Shows concrete engine workflows and tradeoffs: Landscape uses autoLOD and collision‑optimized components but more components raise draw calls; foliage instancing lets the engine handle “thousands to millions” of meshes and cuts draw calls while leaving overdraw and collision costs, and foliage scalability removes visuals but not collision. World Composition generates Level LODs (one static mesh per level) to slash draw calls but lacks dithered transitions and vertical streaming. Merge Actors, Proxy Geometry Tool (voxelized low‑poly meshes, e.g. 4,850 → 551 verts) and HLODs reduce GPU load at the cost of memory, load time and GC considerations.
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chapters (8)
- 0:00Introduction
- 2:07Landscape tool basics
- 9:42Foliage and procedural tools
- 18:25World composition
- 26:10Occlusion and mesh reduction
- 36:51Actor merging and proxy tools
- 40:58Hierarchical LOD systems
- 46:12Garbage collection and conclusion
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