threejs-debug-profiler

Original：🇺🇸 English

Translated

Debug and profile Three.js browser games. Combines scene debugging, render/runtime/loading/animation/resize/mobile input fixes, performance profiling, draw calls, triangles, textures, memory, shader/post-processing cost, bundle size, and mobile DPR/input issues.

3installs

Sourcemajidmanzarpour/threejs-game-skills

Added on2026-08-11

NPX Install

npx skill4agent add majidmanzarpour/threejs-game-skills threejs-debug-profiler

SKILL.md Content

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Three.js Debug Profiler

Purpose

Find root causes and optimize measured bottlenecks without breaking playability.

Debug Workflow

Load

references/debug-profile-checklists.md

as the first action when debugging render/runtime/mobile issues, asset loading, audio loading/playback, animation, resize, input, blank canvas, physics/collision bugs, or profiling performance. Track it in a reference ledger with yes/no, path, and failure reason. Do not mark the debug/profile phase complete while this reference is skipped for debug or profiling work.

Load

references/checklists/scene-debugging.md

for render/runtime bug diagnosis,

references/checklists/performance-profile.md

for profiling work, and

references/checklists/mobile-input.md

for mobile render/input issues. Load

references/prompt-templates.md

only when the user asks for reusable debug/profile prompts or a task template.

Reproduce locally.
Read console/page/network errors.
Check canvas display size and drawing-buffer size.
Check renderer/context/loop ownership.
Check camera, aspect, near/far, lights, materials, fog, scene contents, transforms.
Check asset paths/loaders/CORS/base path.
Check animation delta units, physics/update order, fixed timestep, collider/body ownership, input listeners, pointer/touch behavior, resize, and audio context unlock/decode errors when audio is involved.
Fix root cause in owning module.
Verify browser screenshot, nonblank canvas, console/page errors, and broken path.

Performance Workflow

Reproduce in correct build mode.
Record baseline: FPS/frame time, draw calls, triangles, geometries, textures, memory, bundle.
Identify CPU/GPU/memory/network bottleneck.
Optimize one thing at a time: instancing, shared resources, culling, LOD, DPR cap, cheaper shadows/post, texture discipline.
Re-measure same scenario and verify visuals/playability.

Final Response

Lead with root cause or bottleneck. Report the reference ledger, checklist items used, files changed, baseline/post metrics, commands, screenshots/artifacts, broken paths retested, and residual risks.