How do I install the Threejs Exposure Color Grading skill?

Run npx skillmds@latest add gabrielmoreira/threejs-exposure-color-grading in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Threejs Exposure Color Grading safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Threejs Exposure Color Grading?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Threejs Exposure Color Grading free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Threejs Exposure Color Grading?

gabrielmoreira (@gabrielmoreira) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Threejs Exposure Color Grading by gabrielmoreira

Name: Threejs Exposure Color Grading
Rating: 4.2 (5 reviews)
Author: gabrielmoreira

Threejs Exposure Color Grading

Build a measured exposure and grading path in Three.js. Use for a 64x36 encoded luminance meter, asynchronous readback, weighted log-average exposure, asymmetric adaptation, single tone-map ownership, and a generated 32-cube post-tone-map LUT.

gabrielmoreira Updated Sep 9, 2026 17 repo stars

File contents

Exposure and Color Grading

Treat exposure, tone mapping, grading, and output conversion as distinct stages. Tune them from measured HDR signal, not by stacking compensating color operations.

Order

HDR scene
  → luminance meter
  → adapted exposure
  → tone map
  → creative grade / 3D LUT
  → final output conversion

Read references/scene-referred-color-pipeline.md for the exact 64x36 meter, encoded readback, adaptation constants, 32-cube LUT, and signal-ownership ambiguities.

Failure conditions

tone mapping occurs in both materials and post;
exposure is used to repair physically inconsistent light ratios;
meter weighting and scene framing are not inspected;
adaptation speed is the same toward light and dark;
LUT input/output spaces are undocumented;
sRGB encoding happens twice;
a display-domain LUT is moved before tone mapping without being rebuilt.

Routing boundary

Use $threejs-bloom for HDR glow contribution and $threejs-image-pipeline when this color path must share ownership with AO, atmosphere, or effect-local render targets.

Frequently asked questions