{"schema":"record/v1","id":"art_01M5ME10JC1DJRTF393NE4MP7J","type":"article","revision":1,"etag":"\"r1.s0\"","title":"Which glTF features and extensions does Unity glTFast (6.20.0) say it imports, and which survive import into Unity materials, meshes and animation?","summary":"glTFast (Apache-2.0; Unity 6000.0+) claims full glTF 2.0 core support with minor remarks: sparse accessors only for morph targets and vertex positions, up to eight UV sets imported but only two used by its shaders, animation via the legacy system (Mecanim clips import unassigned; Playables removed because SetCurve works only for legacy clips at runtime), clearcoat partial in URP, full in HDRP and absent in Built-In, DOTS experimental. Known issues from Unity API limits: duplicated shared accessors/images, minFilter overriding magFilter and NEAREST_MIPMAP_LINEAR falling back to NEAREST.","status":"active","body":{"text":"glTFast (Apache-2.0; Unity 6000.0+) claims full glTF 2.0 core support with minor remarks: sparse accessors only for morph targets and vertex positions, up to eight UV sets imported but only two used by its shaders, animation via the legacy system (Mecanim clips import unassigned; Playables removed because SetCurve works only for legacy clips at runtime), clearcoat partial in URP, full in HDRP and absent in Built-In, DOTS experimental. Known issues from Unity API limits: duplicated shared accessors/images, minFilter overriding magFilter and NEAREST_MIPMAP_LINEAR falling back to NEAREST.\n\nCurator qualifications: Docs read 2026-10-22; no glTF imported. Vendor self-description; no import run.\n\nLimitations: Docs read 2026-10-22; no glTF imported.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/Documentation~/features.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"},{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/Documentation~/KnownIssues.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"},{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/LICENSE.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"}]},"categories":["T15","T18"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/Documentation~/features.md","claim":"glTFast (Apache-2.0; Unity 6000.0+) claims full glTF 2.0 core support with minor remarks: sparse accessors only for morph targets and vertex positions, up to eight UV sets imported but only two used by its shaders, animation via the legacy system (Mecanim clips import unassigned; Playables removed because SetCurve works only for legacy clips at runtime), clearcoat partial in URP, full in HDRP and absent in Built-In, DOTS experimental. 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Known issues from Unity API limits: duplicated shared accessors/images, minFilter overriding magFilter and NEAREST_MIPMAP_LINEAR falling back to NEAREST.\n\nCurator qualifications: Docs read 2026-10-22; no glTF imported. Vendor self-description; no import run.\n\nLimitations: Docs read 2026-10-22; no glTF imported.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/Documentation~/features.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"},{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/Documentation~/KnownIssues.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"},{"url":"https://github.com/atteneder/glTFast/blob/3c5cdc1b5c0dc251c596b27ecffe05a83605a4b9/LICENSE.md","note":"glTFast Documentation~/features.md at 3c5cdc1b (raw), L20, L67-91, L177-190, L292-298, L314; glTFast Documentation~/KnownIssues.md at 3c5cdc1b (raw); glTFast LICENSE.md at 3c5cdc1b (raw)"}]},"tags":[],"type":"article","links":[],"title":"Which glTF features and extensions does Unity glTFast (6.20.0) say it imports, and which survive import into Unity materials, meshes and animation?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"glTFast (Apache-2.0; Unity 6000.0+) claims full glTF 2.0 core support with minor remarks: sparse accessors only for morph targets and vertex positions, up to eight UV sets imported but only two used by its shaders, animation via the legacy system (Mecanim clips import unassigned; Playables removed because SetCurve works only for legacy clips at runtime), clearcoat partial in URP, full in HDRP and absent in Built-In, DOTS experimental. 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