glint_basis

The official Basis Universal reference transcoder backend for Glint Engine. It accepts Basis-compressed KTX2 and standalone .basis textures and decodes the selected mip on a background isolate.

final decoder = GlintTextureDecoder(
  basisTranscoder: const GlintBasisTranscoder(),
);

final pixels = await GlintTexturePixels.fromAsset(
  'assets/bodywork.ktx2',
  decoder: decoder,
  maximumDimension: 2048,
);

Pass the same decoder to GlintGameView.textureDecoder to cover particle textures, graph textures, and embedded GLB materials. Glint resolves KHR_texture_basisu.source ahead of an optional PNG/JPEG fallback.

Flutter GPU does not currently expose ASTC/ETC/BC texture formats or mip-level uploads, so this release transcodes to RGBA8 before upload. The public backend boundary preserves the compressed asset pipeline and can select a native GPU format when Flutter GPU exposes those capabilities.

The package vendors only the upstream transcoder and Zstandard decoder, builds them through Dart native assets, and runs each decode in a background isolate. See THIRD_PARTY_NOTICES.md for licensing.