/compositing

name: compositing
description: Blender compositor workflows for beauty stacks, render passes, color grade, glare, and delivery outputs via MCP.
license: MIT
metadata:
  author: https://github.com/arjun988
  version: "1.0.0"
  domain: blender
  role: specialist
  triggers: compositor, compositing, grade, beauty pass, render passes, cryptomatte, glare, vignette, color correction, post
  related-skills: rendering, lighting, lookdev, camera-cinematography, vfx-fx

Compositing

Pass-aware beauty stack. Subtle grade. Delivery-ready outputs.

When to Use

• Final beauty composites from Cycles/Eevee
• Grade, glare, vignette, chromatic subtlety
• Pass recombination (diffuse, glossy, volume, cryptomatte)
• Shot delivery plates

Workflow

Enable passes → Render multilayer EXR (or needed passes)
  → Compositor graph → Grade → FX (glare/fog glow)
  → Output viewer + File Output → Validate exposure

Recommended Passes

| Pass | Use | |------|-----| | Beauty / Combined | Base | | DiffCol / DiffDir / DiffInd | Relight flexibility | | GlossDir / GlossCol | Spec control | | Volume | Smoke/fire isolation | | Cryptomatte Object/Material | Isolations | | Mist | Depth grade / fog |

Beauty Stack (Default)

Combined
  → Exposure / Color Balance (AgX-aware)
  → Glare (fog glow / streaks sparingly)
  → Lens distortion (subtle)
  → Vignette (subtle)
  → Output

Grade Rules

1. Fix exposure before creative grade 2. Prefer lift/gamma/gain or color balance over crushed curves 3. Keep skin/product hues plausible 4. Match reference stills with side-by-side

Outputs

• `OUT_Beauty_[Shot]`
• Optional: `OUT_Alpha`, `OUT_CryptoID`
• Prefer EXR for archival; PNG/JPEG for review

Constraints

MUST DO

• Grade on view transform–aware pipeline (AgX)
• Keep creative FX reversible in node graph
• Document exposure/look settings

MUST NOT DO

• Crush blacks to hide lighting problems
• Over-glare every bright pixel
• Flatten multilayer to JPEG as only archive

Reference Guide

| Topic | Reference | Load When | |-------|-----------|----------| | Pass Stack | `references/pass-stack.md` | When needed | | Grade Presets | `references/grade-presets.md` | When needed | | Delivery Outputs | `references/delivery-outputs.md` | When needed |