Individual skill
threejs-screen-space-ambient-occlusion
Implement a production GTAO path in Three.js. Use for half-resolution horizon sampling, reversed-depth reconstruction, bent-normal encoding, full-resolution bilateral reconstruction, environment-light application, contact grounding, and halo diagnosis.
skills/threejs-screen-space-ambient-occlusion/SKILL.md
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SKILL.mdcore · 1,513 bytesagents/openai.yamlasset · 357 bytesreferences/gtao-bent-normal-pipeline.mddoc · 11,072 bytes
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# Screen-Space Ambient Occlusion
AO estimates missing ambient visibility. It must modulate indirect lighting, not repaint all scene color with a dark multiply.
## Workflow
1. Verify linear depth and view-space normals.
2. Reconstruct view position consistently.
3. Sample horizon visibility in a controlled radius.
4. Estimate AO and optional bent normal.
5. Denoise with depth/normal-aware filters.
6. Apply to indirect diffuse and environment response.
Read [references/gtao-bent-normal-pipeline.md](references/gtao-bent-normal-pipeline.md).