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There's no reason to have a cube-array path. Compat mode does not support cube-array and core mode will always use the 2d-array path.
📦 Bundle sizeFull ESM build, minified and gzipped.
🌳 Bundle size after tree-shakingMinimal build including a renderer, camera, empty scene, and dependencies.
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Mugen87
approved these changes
Feb 1, 2026
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Related issue: #32903
Description
There's no reason to have a cube-array path for generateMipmaps. Compat mode does not support cube-array and core mode will always use the 2d-array path.
When I copied this code from webgpu-utils, I noticed that the code for cube-array was indexing the
faceMatarray bybaseArrayLayerwhich didn't make sense to me. In the three.js PR I changed it tobaseArrayLayer % 6. But then I went back and try to figure out why tests were passing in webgpu-utils. I finally realized this path is never used 😅. I deleted it there and now this PR deletes it here.