# Phase 3 — Visuals & Performance Architecture

## Scope
Art pass, baked lighting, performance profiling, LOD + occlusion culling for the competitive tactical shooter.

## Dependency Chain (Kanban)

```
t_p3_artkit  (modular wall/floor kit + PBR materials 1K + art style guide)
    └── t_p3_lighting  (LightmapGI baked lighting + reflection probes)
           └── t_p3_profile  (perf budget + LOD + occlusion culling)
```

## Art Style

- **Valorant-direction**, not AAA photorealistic
- Clean silhouettes, team-colored zones (CT/blue, T/red-orange)
- 1K PBR textures (base color, normal, roughness, metallic)
- CC0-licensed or custom-created assets

## Lighting Strategy

- LightmapGI for all static geometry
- Reflection probes at corridor junctions and open areas
- No SDFGI or real-time GI
- Lightmap texel density: 4-8 per unit walls/floors, 8-16 for focal surfaces

## Performance Budget

| Metric | Target |
|--------|--------|
| Frame time | 16ms (60fps) |
| GPU budget | 8ms |
| CPU budget | 6ms |
| Draw calls | 1500-2000 per frame |
| VRAM | 2GB texture pool |
| LOD0 tris/wall | 500-2000 |

## LOD Strategy

- 3 LOD levels per modular asset
- LOD1 at 15m (50% tris), LOD2 at 40m (25% tris), LOD3 at 80m
- Occlusion culling via OccluderInstance3D auto-generation

## Reference Hardware

- GTX 1050 / RX 560 class GPU (or integrated graphics)
- Godot Forward+ renderer