[SDL3 GPU Migration] Task 14: Main Renderer Integration

[bryfur]

Phase 5: Cleanup - Integration & Testing

Agent: Integration Agent
Dependencies: All Phase 3 and Phase 4 tasks
Estimated Time: 4-6 hours

📄 Full details available in: docs/sdl3_gpu_migration_plan.md - See "Task 14: Integration & Testing" section

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Objectives

1. Integrate all renderer subsystems
2. Verify complete rendering pipeline
3. Performance testing and optimization
4. Fix any remaining issues

Verification Checklist

• Application launches without errors
• Login screen renders
• World loads and displays
• Terrain renders with textures
• Player character renders
• Other players visible
• NPCs/enemies render
• Animations play smoothly
• UI elements functional
• Chat works
• Health bars display
• Shadows render correctly
• Day/night cycle works (if applicable)
• Particle effects display
• No memory leaks (check with tools)
• CI passes - Project builds successfully on Ubuntu (GitHub Actions)

Performance Targets

• 60 FPS at 1080p with 50+ entities visible
• GPU memory usage reasonable (measure baseline)
• No hitching on texture/model loads

Platform Testing

• macOS (Metal backend)
• Windows (Vulkan/D3D12 backend) - if applicable
• Linux (Vulkan backend) - if applicable

Integration Steps

1. Run game and observe console for any GL errors/warnings
2. Walk through all game areas
3. Test all ability effects
4. Test UI interactions
5. Monitor frame times
6. Profile GPU usage

Acceptance Criteria

• All subsystems work together
• No visual regressions
• Performance meets targets
• No crashes or hangs
• Memory stable over time
• CI passes - Project builds successfully on Ubuntu (GitHub Actions)

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Blocked by: #9, #10, #11, #12, #13, #15, #16, #17