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EEVEE-next has removed the MA_BM_CLIP / alpha_threshold material properties in favor of using nodes for equivalent functionality. This changes USD to build and traverse node graphs during import and export accordingly. Indirectly this allows Cycles to correctly render such materials now too. A complicating factor is that the UsdPreviewSurface defines its opacity threshold using greater-than-equals[1], which Blender does not support (and for which was technically already incorrect as EEVEE-legacy only used greater-than for its shaders). Due to this we actually need to use 2 nodes: A less-than, followed by a one-minus invert, to arrive at the proper value. We'll translate UsdPreviewSurface to this form on Import. For Export we will look for either this 2-node pattern or a Round node plugged into Alpha. Looking for Round is a result of the glTF documentation which recommended the use of this node for thresholds of 0.5[2]. It's a tiny addition that seems reasonable to accommodate. [1] https://openusd.org/release/spec_usdpreviewsurface.html (search for "opacityThreshold") [2] https://docs.blender.org/manual/en/4.2/addons/import_export/scene_gltf2.html#alpha-modes See PR for example images Pull Request: https://projects.blender.org/blender/blender/pulls/122025