{"slug":"scottstts-threejs-parallax-occlusion-mapping","name":"threejs-parallax-occlusion-mapping","description":"Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals.","long_description":"---\nname: threejs-parallax-occlusion-mapping\ndescription: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals.\n---\n\n# Parallax Occlusion Mapping\n\nTreat relief as a coupled intersection, coverage, normal, and shadow system.\nDo not stop at offsetting texture coordinates.\n\nThis skill contains exemplary examples and assets beyond descriptive guidance,\nthey're worth studying, referencing, or even copying. Use them sufficiently\nwhen relevant and do NOT blindly skip them.\n\n## Build order\n\n```text\ntangent frame and height convention\n  -> view-ray march and hit refinement\n  -> bounded or curved silhouette coverage\n  -> shared marched sampling\n  -> height-derived shading normal\n  -> light-ray self-shadow march\n  -> relief-aware cast/received shadow positions\n```\n\nRead [references/silhouette-relief-contract.md](references/silhouette-relief-contract.md)\nfor the intersection contract, flat and curved silhouette modes, shell\ninflation, shadow integration, quality controls, and diagnostics.\n\nRead the\n[silhouette relief implementation](examples/silhouette-relief/ParallaxOcclusion.js)\nfor the complete TSL march, binary hit refinement, gradient-safe sampling,\ncoverage, horizon trimming, curved sag, and self-shadow function.\n\nRead the\n[complete bulkhead assembly](examples/silhouette-relief/silhouette-relief-system.js)\nand its [packed procedural height maps](examples/silhouette-relief/bulkhead-height-maps.js)\nfor a wall, deck, relief columns, and overhead pipes using height-derived\nnormals, inflated cylinder shells, alpha-to-coverage, shadow-mask carving,\nmarched shadow depth, and received-shadow positions.\n\n## Required controls\n\n- world or UV relief scale;\n- minimum and maximum view-march layers;\n- silhouette bounds and feathering;\n- curved-surface curvature or curvature callback;\n- horizon trimming and edge erosion;\n- self-shadow steps, bias, and strength;\n- geometry, carved, and full-relief shadow modes;\n- height, coverage, marched UV, normal, and shadow diagnostics.\n\n## Failure conditions\n\n- color, normal, and roughness rebuild separate view marches unintentionally;\n- a curved host uses flat silhouette clipping at its geometric horizon;\n- an inflated shell changes the relief floor instead of keeping it on the base surface;\n- alpha-tested beauty coverage is assumed to carve shadow maps automatically;\n- derivative sampling runs behind discard on drivers where it erodes coverage;\n- grazing rays divide by an unbounded view-space Z component;\n- relief self-shadowing darkens fill or emission indiscriminately.\n\n## Routing boundary\n\nUse `$threejs-procedural-materials` when no ray-marched height intersection or\nsilhouette ownership is required. Use `$threejs-procedural-geometry` when the\nsilhouette must be actual mesh topology rather than a view-dependent relief.\n","tagline":"Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals.","category":"design-creative","tags":["agent-skill"],"author":"scottstts","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"github candidate review","sourceDetail":"scottstts/Threejs-Awesome-Graphics-Agent-Skills","creatorName":"scottstts","creatorUrl":"https://github.com/scottstts","sourceUrl":"https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/scottstts-threejs-parallax-occlusion-mapping#claim-this-skill","claimCta":"Claim this skill","trustNote":"This listing was indexed from public sources and is not marked official until a maintainer claim is approved.","publicNote":"Attribution links to the public repository or creator profile. 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Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"threejs-parallax-occlusion-mapping\" as a Claude Code skill from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"threejs-parallax-occlusion-mapping\" from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. 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Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. 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After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"threejs-parallax-occlusion-mapping\" from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. 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notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/scottstts-threejs-parallax-occlusion-mapping","api":"https://www.openagentskill.com/api/agent/skills/scottstts-threejs-parallax-occlusion-mapping","audit":"https://www.openagentskill.com/skills/scottstts-threejs-parallax-occlusion-mapping/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=scottstts-threejs-parallax-occlusion-mapping&task=Use%20threejs-parallax-occlusion-mapping%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20threejs-parallax-occlusion-mapping%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20threejs-parallax-occlusion-mapping%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/scottstts-threejs-parallax-occlusion-mapping/install","manifest":"https://www.openagentskill.com/api/registry/manifest/scottstts-threejs-parallax-occlusion-mapping"}},"supply_profile":{"track":{"slug":"design","label":"Design and creative production","shortLabel":"Design","description":"Design assets, images, video, audio, multimodal media, presentation, and creative production skills."},"scenario":{"label":"Design and creative","description":"I need my agent to produce design assets, UI directions, presentations, or creative media workflows.","useCases":[{"slug":"browser-automation","title":"Browser automation"},{"slug":"testing-qa","title":"Testing and QA"},{"slug":"design-creative","title":"Design and creative"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add scottstts/Threejs-Awesome-Graphics-Agent-Skills --skill threejs-parallax-occlusion-mapping","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":782,"starsLabel":"782","forks":87,"license":"MIT","qualityScore":76,"trustScore":81,"auditScore":84},"maintenance":{"status":"fresh","label":"9d since push","daysSincePush":9,"lastPushedAt":"2026-08-27T23:12:25+00:00"},"risk":{"level":"safe_to_try","label":"Safe to try","requiresReview":true,"notes":["Quality score needs review"]},"coverageTags":["Design","Design and creative","design-creative","agent-skill"]},"audit":{"audit_score":84,"risk_level":"safe_to_try","risk_label":"Safe to try","quality_score":76,"trust_score":81,"maintenance_score":100,"security_score":85,"install_score":92,"warnings":["Quality score needs review"]},"quality_signals":{"model":"v2","star_score":20.26,"usage_score":0,"review_score":5.7,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"},{"slug":"testing-qa","title":"Testing and QA","url":"https://www.openagentskill.com/use-cases/testing-qa"},{"slug":"design-creative","title":"Design and creative","url":"https://www.openagentskill.com/use-cases/design-creative"},{"slug":"local-desktop","title":"Local desktop","url":"https://www.openagentskill.com/use-cases/local-desktop"}],"stacks":[{"slug":"frontend-product-ui","title":"Frontend and UI","url":"https://www.openagentskill.com/collections/frontend-product-ui"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"},{"slug":"rag-knowledge-base","title":"RAG knowledge base","url":"https://www.openagentskill.com/collections/rag-knowledge-base"}],"install":"npx skills add scottstts/Threejs-Awesome-Graphics-Agent-Skills --skill threejs-parallax-occlusion-mapping","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add scottstts-threejs-parallax-occlusion-mapping","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"threejs-parallax-occlusion-mapping\" agent skill from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"threejs-parallax-occlusion-mapping\" as a Claude Code skill from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"threejs-parallax-occlusion-mapping\" from https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Build silhouette-aware parallax occlusion mapping in Three.js WebGPU and TSL. Use for height-field ray marching, relief UVs, clipped flat or curved silhouettes, inflated shells, self-shadowing, relief-aware shadow depth, and height-derived normals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"scottstts-threejs-parallax-occlusion-mapping\",\"task\":\"Install threejs-parallax-occlusion-mapping\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping","github_repo":"scottstts/Threejs-Awesome-Graphics-Agent-Skills","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/scottstts-threejs-parallax-occlusion-mapping","repository":"https://github.com/scottstts/Threejs-Awesome-Graphics-Agent-Skills/tree/main/skills/threejs-parallax-occlusion-mapping","api":"/api/agent/skills/scottstts-threejs-parallax-occlusion-mapping","install_api":"/api/skills/scottstts-threejs-parallax-occlusion-mapping/install"},"meta":{"created_at":"2026-09-05T02:34:00.495402+00:00","updated_at":"2026-09-05T02:34:00.558005+00:00","agent_friendly":true}}