UE 5.8 primary sources

• UE 5.8 Release Notes
• Optimizing and Debugging Real-Time Rendering
• Scalability Reference
• Setting Device Profiles
• Temporal Super Resolution
• Temporal Upscalers
• Dynamic Resolution
• Nanite Virtualized Geometry
• Working with Nanite-Enabled Content
• Nanite Technical Details
• Lumen Performance Guide
• Virtual Shadow Maps
• MegaLights
• Viewport Modes
• Visibility and Occlusion Culling
• Primitive Debugger
• Render Resource Viewer

Pages were checked against UE 5.8 documentation on 2026-07-19. Reconfirm feature maturity, renderer/platform support, scalability-group contents, visualization names, and CVars after an engine upgrade.