One texture. Three image paths.

GLTFLoader can select WebP and AVIF images from texture extensions while a PNG source remains available as a fallback. This lab creates one in-memory glTF asset, loads the real image formats, and exposes the selected source instead of treating a file extension as a rendering guarantee.

LANES

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WEBP

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AVIF

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BYTES

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PNG fallback -> WebP/AVIF extension source -> GLTFLoader texture association

Derived from the official GLTFLoader docs and the Khronos EXT_texture_webp contract. The pinned AVIF example also uses DRACOLoader and the Forest House GLB; AVIF support is reported only when the active browser can decode the payload.