Initial commit: Complete project foundation with all documentation, scripts, and project structure

docs/PERFORMANCE_OPTIMIZATION.md

@@ -0,0 +1,309 @@
+# Performance Optimization - Dubai Metaverse
+
+## Overview
+
+This document describes performance optimization strategies and techniques for the Dubai Metaverse project.
+
+## Performance Targets
+
+### Frame Rate
+
+- **Target**: 60-90 FPS at 1440p/4K
+- **Minimum**: 60 FPS
+- **Measurement**: Unreal Insights, Stat FPS
+
+### Memory
+
+- **GPU Memory**: <12GB VRAM
+- **System RAM**: <16GB
+- **Measurement**: Unreal Insights, Stat Memory
+
+---
+
+## Optimization Strategies
+
+### Nanite Optimization
+
+#### Usage
+
+- **Enable Nanite**: Enable for all static meshes
+- **Target**: 100% of static meshes use Nanite
+- **Benefit**: High-poly geometry without performance penalty
+
+#### Optimization
+
+1. **Clustering**: Optimize Nanite clustering
+2. **Streaming**: Use texture streaming
+3. **Distance Culling**: Cull distant Nanite meshes
+
+---
+
+### LOD System
+
+#### Non-Nanite Assets
+
+- **LOD Generation**: Generate LODs for non-Nanite assets
+- **LOD Count**: LOD0-3 for primary, LOD0-2 for background
+- **LOD Distance**: Optimize LOD transition distances
+
+#### LOD Settings
+
+- **LOD0**: Full detail (close)
+- **LOD1**: Reduced detail (medium)
+- **LOD2**: Simplified (far)
+- **LOD3**: Minimal (very far)
+
+---
+
+### World Partition Optimization
+
+#### Streaming
+
+- **Cell Size**: Optimize cell size (128m default)
+- **Loading Range**: Optimize loading range per cell
+- **Streaming Budget**: Set streaming budget
+
+#### Data Layers
+
+- **Organization**: Organize by system (buildings, props, etc.)
+- **Streaming**: Optimize data layer streaming
+- **Culling**: Use distance culling
+
+---
+
+### Material Optimization
+
+#### Shader Complexity
+
+- **Instructions**: Minimize shader instructions
+- **Texture Sampling**: Optimize texture sampling
+- **Parameters**: Limit exposed parameters
+
+#### Shared Materials
+
+- **Use Shared Materials**: Use shared materials where possible
+- **Material Instances**: Use instances for variations
+- **Material Count**: Minimize unique material count
+
+---
+
+### Lighting Optimization
+
+#### Lumen Quality
+
+- **Final Gather Quality**: Adjust based on performance
+- **Reflection Quality**: Adjust based on performance
+- **View Distance**: Optimize view distance
+
+#### Shadow Optimization
+
+- **Virtual Shadow Maps**: Use for performance
+- **Shadow Resolution**: Adjust based on performance
+- **Shadow Distance**: Optimize shadow distance
+
+#### Light Count
+
+- **Minimize Dynamic Lights**: Use static lights where possible
+- **Light Complexity**: Optimize light complexity
+- **Culling**: Use distance culling
+
+---
+
+### Texture Optimization
+
+#### Resolution
+
+- **Hero Assets**: 8K (necessary for quality)
+- **Primary Buildings**: 4K
+- **Background**: 2K
+- **Props**: 1K-2K based on size
+
+#### Streaming
+
+- **Texture Streaming**: Enable texture streaming
+- **Virtual Textures**: Use for large textures (optional)
+- **Mip Maps**: Generate mip maps
+
+#### Compression
+
+- **Format**: Use appropriate compression
+- **Base Color**: BC7 (DXT5)
+- **Normal**: BC5
+- **Other**: BC7
+
+---
+
+### Particle Optimization
+
+#### Spawn Rate
+
+- **Optimize Spawn Rate**: Reduce if needed
+- **Lifetime**: Optimize particle lifetime
+- **LODs**: Use LODs for particles
+
+#### GPU Particles
+
+- **Use GPU Particles**: For better performance
+- **Limit Count**: Limit particle count
+- **Optimize Shaders**: Optimize particle shaders
+
+---
+
+### NPC Optimization
+
+#### Count
+
+- **NPC Density**: Optimize NPC count
+- **Distance Culling**: Cull distant NPCs
+- **LODs**: Use LODs for NPCs
+
+#### Behavior
+
+- **Update Frequency**: Optimize behavior tree updates
+- **Perception**: Optimize perception checks
+- **Pathfinding**: Optimize pathfinding
+
+---
+
+## Performance Profiling
+
+### Unreal Insights
+
+#### Setup
+
+1. **Enable Insights**: Enable Unreal Insights
+2. **Start Session**: Start profiling session
+3. **Play**: Play in editor or packaged build
+4. **Stop**: Stop profiling
+5. **Analyze**: Analyze results
+
+#### Metrics
+
+- **Frame Time**: Frame time breakdown
+- **Draw Calls**: Draw call count
+- **GPU Time**: GPU time breakdown
+- **Memory**: Memory usage
+
+---
+
+### Stat Commands
+
+#### Frame Rate
+
+- **Stat FPS**: Display FPS
+- **Stat Unit**: Display frame time breakdown
+
+#### Rendering
+
+- **Stat RHI**: Display rendering stats
+- **Stat SceneRendering**: Display scene rendering stats
+
+#### Memory
+
+- **Stat Memory**: Display memory usage
+- **Stat Streaming**: Display streaming stats
+
+---
+
+## Optimization Checklist
+
+### Pre-Optimization
+
+- [ ] Profile baseline performance
+- [ ] Identify bottlenecks
+- [ ] Set optimization priorities
+
+### Optimization
+
+- [ ] Enable Nanite for all static meshes
+- [ ] Generate LODs for non-Nanite assets
+- [ ] Optimize World Partition streaming
+- [ ] Optimize material complexity
+- [ ] Optimize texture resolution and streaming
+- [ ] Optimize lighting settings
+- [ ] Optimize particle systems
+- [ ] Optimize NPC count and behavior
+
+### Post-Optimization
+
+- [ ] Profile optimized performance
+- [ ] Validate performance targets met
+- [ ] Test on target hardware
+- [ ] Document optimization changes
+
+---
+
+## Performance Testing
+
+### Test Scenarios
+
+1. **Empty Level**: Baseline performance
+2. **Full District**: Complete district loaded
+3. **Cinematic Camera**: Camera movement
+4. **Vehicle Driving**: Vehicle physics
+5. **NPC Crowd**: Multiple NPCs
+
+### Test Hardware
+
+- **Minimum Spec**: RTX 3060 / RX 6600 XT
+- **Recommended Spec**: RTX 3070 / RX 6800 XT
+- **High-End Spec**: RTX 4080 / RX 7900 XTX
+
+---
+
+## Troubleshooting
+
+### Common Issues
+
+**Issue**: Low frame rate
+- **Solution**: Profile to identify bottlenecks
+- **Solution**: Optimize identified areas
+- **Solution**: Reduce quality settings if needed
+
+**Issue**: High memory usage
+- **Solution**: Optimize texture resolution
+- **Solution**: Enable texture streaming
+- **Solution**: Reduce asset count
+
+**Issue**: Stuttering
+- **Solution**: Optimize streaming
+- **Solution**: Reduce asset loading
+- **Solution**: Optimize World Partition
+
+---
+
+## Performance Budget
+
+### Per System
+
+- **Rendering**: 60% of frame time
+- **Lighting (Lumen)**: 20% of frame time
+- **Physics**: 5% of frame time
+- **AI/NPCs**: 5% of frame time
+- **Other**: 10% of frame time
+
+### Optimization Priority
+
+1. **Rendering**: Highest priority
+2. **Lighting**: High priority
+3. **Physics**: Medium priority
+4. **AI/NPCs**: Medium priority
+5. **Other**: Low priority
+
+---
+
+## Documentation
+
+### Optimization Documentation
+
+Document optimization changes:
+- **Changes Made**: What was optimized
+- **Performance Impact**: Performance improvement
+- **Settings**: Optimization settings
+- **Notes**: Additional notes
+
+---
+
+**Version**: 1.0
+**Last Updated**: [Current Date]
+