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Three.js Post-Processingby CloudAI-X

Three.js Post-Processing Skill.

Treat screen effects as an ordered rendering pipeline instead of unrelated filters.

  • 3D
  • Three.js
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Source Review · Three.js Post-ProcessingSKILL.md
Task 3D Produces • An ordered composer pass chain • Effect settings tied to a visual purpose • Resize handling and effect-cost comparison Before You Start A working Three.js project and renderer; verify source examples against the installed release. Additional controls and loaders depend on the chosen path.
Editorial summary · source reviewed 2026-10-07 · not a generated example

01 What It Does

Three.js Post-Processing: Build a Screen-Effect Pipeline

Composer setup, screen-space effects, custom passes, render targets, and resizing.

Source-based workflowNot an execution benchmark

The Working Approach

Three.js Post-Processing covers EffectComposer and passes that transform a rendered scene. Examples include glow, anti-aliasing, ambient occlusion, depth of field, outlines, grading, and custom screen-space shaders.

The distinction from material work is scope: post-processing operates on rendered imagery and can affect the entire composition. Pass order, target resolution, resize handling, and comparison with the untreated scene belong in the implementation plan. Verify the example constructors and renderer support against the installed Three.js release before using them.

Expected Deliverables

  • An ordered composer pass chain
  • Effect settings tied to a visual purpose
  • Resize handling and effect-cost comparison
See the Example Brief

From Brief to Review

  1. 01
    Choose the Intent

    Specify what should glow, remain in focus, or receive emphasis.

  2. 02
    Assemble Passes

    Start from a scene render and add only the passes needed for the intended treatment.

  3. 03
    Compare and Profile

    Check the effect-free view, resized output, and rendering cost at the target resolution.

02 When to Use It

When to Use It

A working Three.js project and renderer; verify source examples against the installed release. Additional controls and loaders depend on the chosen path.

A Good Fit

  • Presentation FinishApply controlled glow or focus after the underlying scene already works.
  • Selection EmphasisOutline selected geometry without replacing its base material.

Limits to Check

  • Additional Rendering WorkEach pass can add cost and may hide rather than solve a scene problem.
  • API Verification NeededThe captured source contains version-sensitive constructors and WebGPU patterns.

Bring These Inputs

  • Baseline SceneSupply a working render before effects.
  • Visual TreatmentDescribe the desired glow, focus, outline, or grading.
  • Performance TargetState resolution, pixel ratio, and target devices.

03 Decisions That Matter

Decisions That Matter

  1. Pipeline Reasoning

    Ordering explains interactions that isolated effect tweaking can miss.

  2. Reversible Effects

    A baseline comparison helps remove expensive passes that do not serve the shot.

04 Try a Focused Brief

Try a Focused Brief

The example brief below has not been tested. Check the skill’s setup before using it.

Review the Setup

Use the relevant threejs-skills directory as agent guidance. It is not the Three.js runtime and does not install scene assets.

Upstream Source File
https://github.com/CloudAI-X/threejs-skills/blob/b1c623076c661fc9b03dac19292e825a5d106823/skills/threejs-postprocessing/SKILL.md

A working Three.js project and renderer; verify source examples against the installed release. Additional controls and loaders depend on the chosen path.

Start With One Deliverable

Adapt the scope, source material and constraints in this brief before running the skill.

Example Brief
Use threejs-postprocessing to add a subtle outline and optional bloom to this scene. Keep an effect-free comparison, explain pass order, verify resizing, and measure the added cost. Check constructors against the installed release before use.

Inspect the Result

Check the actual output against these observable criteria.

  • The composer is the intended final render path.
  • Effects survive resize and pixel-ratio changes.
  • Every enabled pass has a clear purpose.

OpenDesign provides a local design workspace for coding agents. This listing does not mean the skill is bundled or that its external tools, credentials and software dependencies are included.

Download OpenDesignRead the Quickstart

05 Source and License

Source and License

This page describes the pinned source revision linked below. Upstream behavior and requirements can change.

Source Owner
CloudAI-X
Repository
CloudAI-X/threejs-skills
Skill File
skills/threejs-postprocessing/SKILL.md
License
Not confirmed — review the upstream terms before reuse.
Reviewed Snapshot
2026-10-07 · b1c623076c66
Editorial Source Summary
Composer setup, screen-space effects, custom passes, render targets, and resizing.

Original summary by OpenDesign, based on the linked source. Repository stars are a dated popularity signal, not skill usage or a quality score.

06 Questions Before You Start

Questions Before You Start

Is bloom a material property here?

No. This skill presents bloom as a post-processing pass.

Why update resolution on resize?

Composer targets and pass-specific uniforms need to stay aligned with the output.

Is current WebGPU compatibility guaranteed?

No. The renderer and installed release must be checked.

OpenDesign

Make Room for the Next Design Iteration.

Keep your brief, source material and design work together in a local workspace. Check the skill’s own setup before adding it to your workflow.

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Upstream Source File
https://github.com/CloudAI-X/threejs-skills/blob/b1c623076c661fc9b03dac19292e825a5d106823/skills/threejs-postprocessing/SKILL.md