Real-Time RenderingUnreal Engine 5 & Cinematic Storytelling

// ── UE5 C++ / Blueprint: Environment Setup Guide ─────
// While UE5 is primarily visual (Blueprint), understanding
// the underlying systems makes you a better technical artist.

// ── PROJECT SETTINGS (must configure first!) ──────────
// 1. Rendering:
//    Global Illumination Method: Lumen
//    Reflection Method: Lumen
//    Shadow Map Method: Virtual Shadow Maps
//    Anti-Aliasing: TSR (Temporal Super Resolution)
//
// 2. Nanite:
//    Enable Nanite: ✓ (Project Settings → Rendering)
//    Nanite on imported meshes: auto-enabled for >1000 tris
//
// 3. Post Process Volume (add one that covers entire level):
//    Exposure: Manual (ISO 100, Aperture f/2.8)
//    Bloom: Intensity 0.5, Threshold 1.0
//    Vignette: 0.3
//    Film Grain: 0.05 (subtle, cinematic)

// ── MEGASCANS WORKFLOW ────────────────────────────────
// 1. Open Quixel Bridge (built into UE5)
// 2. Browse and download assets:
//    - Surfaces (ground textures, walls, floors)
//    - 3D Assets (rocks, trees, debris, props)
//    - Decals (cracks, stains, moss, graffiti)
// 3. Drag assets into viewport
// 4. Nanite auto-enables on complex meshes
// 5. Materials are pre-configured PBR

// ── LUMEN LIGHTING SETUP ──────────────────────────────
// For a cinematic outdoor scene:
//
// 1. Directional Light (Sun):
//    Intensity: 10.0 lux
//    Color Temp: 5500K (warm) or 7000K (overcast)
//    Source Angle: 0.5-2.0 (soft shadows)
//    Atmosphere Sun Light: ✓
//
// 2. Sky Light:
//    Real Time Capture: ✓ (captures sky + bounced light)
//    Intensity: 1.0
//
// 3. Sky Atmosphere:
//    Use defaults — UE5's sky system is physically accurate
//
// 4. Exponential Height Fog:
//    Fog Density: 0.02
//    Start Distance: 1000
//    Inscattering Color: Match sky horizon color

// ── BLUEPRINT: Camera Cinematic Rig ───────────────────
// Create a Blueprint Actor with these components:
//
// Components:
//   SceneRoot
//   ├── CraneBoom (SpringArm)
//   │   └── CameraComponent
//   ├── FocusTarget (empty actor reference)
//   └── Timeline (for animated camera moves)
//
// Variables:
//   - FocalLength : float = 35.0 (mm)
//   - Aperture    : float = 2.8  (f-stop, controls DOF)
//   - FocusDist   : float = 300  (cm, auto-focus distance)
//   - BoomLength  : float = 500  (crane arm length)
//   - BoomPitch   : float = -15  (look-down angle)

// ── POST-PROCESS PRESETS ──────────────────────────────
// Cinematic Film Look:
//   Color Grading:
//     Shadows   → slight blue tint  (0.95, 0.95, 1.05)
//     Midtones  → neutral           (1.0, 1.0, 1.0)
//     Highlights → warm push        (1.05, 1.02, 0.95)
//   Tone Curve:
//     Toe: 0.55 (lift shadows slightly — no pure black)
//     Shoulder: 0.26 (smooth highlight rolloff)
//   Film Emulation:
//     Slope: 0.88, Toe: 0.55, Shoulder: 0.26, BlackClip: 0.0

// ── UE5 Sequencer: Cinematic Sequence Setup ──────────
// The Sequencer is your film editor inside UE5.
// Here's how to set up a professional multi-camera sequence.

// ── STEP 1: Create a Level Sequence ───────────────────
// Content Browser → Right Click → Cinematics → Level Sequence
// Name it: "SC_010" (Scene 010 — production naming convention)
//
// Scene/Shot Naming Convention (Film Industry):
//   SC_010_SH_020 = Scene 10, Shot 20
//   Numbering by 10s allows inserting shots later

// ── STEP 2: Add Camera Cuts Track ─────────────────────
// In Sequencer: + Track → Camera Cut Track
// This controls WHICH camera is active at each moment.

// ── STEP 3: Create Cameras ────────────────────────────
// For each shot, create a CineCamera Actor:
//
// Camera A — "Wide Establishing" (Master Shot):
//   Focal Length: 24mm
//   Aperture: f/5.6 (deep focus — everything sharp)
//   Sensor: Super 35mm (24.89 × 18.66mm)
//
// Camera B — "Medium Close-Up" (Dialogue):
//   Focal Length: 50mm
//   Aperture: f/2.8 (shallow DOF — subject isolation)
//   Focus: Auto-track to character
//
// Camera C — "Close-Up" (Emotion/Detail):
//   Focal Length: 85mm
//   Aperture: f/1.8 (extreme bokeh)
//   Focus: Eyes of the character

// ── STEP 4: Animate Camera Movement ──────────────────
// For each camera, add Transform tracks in Sequencer:
//
// Dolly Move (push in):
//   Key frame 0: Camera 5m from subject
//   Key frame 120 (5 sec): Camera 2m from subject
//   Curve: Ease In-Out (smooth acceleration)
//
// Orbit/Arc:
//   Attach camera to a rotating arm (Blueprint)
//   Animate rotation from 0° → 45° over 3 seconds
//
// Crane Shot:
//   Animate SpringArm length: 200 → 600 cm
//   Animate pitch: 0° → -30° (looking down)
//
// Focus Pull (Rack Focus):
//   Key frame 0: Focus on foreground character
//   Key frame 48 (2 sec): Focus on background character
//   Curve: Linear (smooth, deliberate)

// ── STEP 5: Export Settings ───────────────────────────
// Sequencer → Render Movie (Clapper icon)
//
// Recommended Export Settings:
//   Resolution:       3840 × 2160 (4K)
//   Frame Rate:       24 fps (cinematic)
//   Output Format:    PNG Image Sequence (best quality)
//                     OR Apple ProRes 4444 (with alpha)
//   Anti-Aliasing:    Spatial: TSR, Temporal Samples: 8
//   Console Variable: r.MotionBlurQuality 4
//   Warm-Up Frames:   32 (lets Lumen GI stabilise)
//
// USE MOVIE RENDER QUEUE (not the basic movie export):
//   Window → Cinematics → Movie Render Queue
//   This gives: render passes, higher quality AA, EXR output

// ── CINEMATOGRAPHY RULES OF THUMB ────────────────────
// 1. 180° Rule: Keep camera on ONE side of the action
// 2. Rule of Thirds: Place subjects at grid intersections
// 3. Lead Room: Give characters space to "look into"
// 4. Cutting on Action: Cut DURING movement, not before/after
// 5. Shot Duration: Wide=5s+, Medium=3-5s, Close=1-3s
// 6. Every cut must be motivated — "why am I cutting here?"