lucascs@protonmail.com Lucas C.S. Build the gltfpack command-line tool, a standalone glTF/GLB optimizer that quantizes and compresses meshes and animations zeux/meshoptimizer https://github.com/zeux/meshoptimizer/issues meshoptimizer is a C++ library with a plain C API that reorganizes triangle meshes so a GPU renders them faster: it reorders indices for the post-transform vertex cache, reduces overdraw, packs vertex data for efficient fetch, generates meshlet clusters for mesh shaders, and simplifies meshes while preserving their shape. It also implements the vertex and index codecs behind the EXT_meshopt_compression glTF extension. The library has no dependencies of its own and no architecture-specific backend beyond optional SIMD paths that are selected at compile time, so it builds the same way on every arch this overlay keywords. media-gfx/blender needs it as a system library from the 5.2 series on: Blender unbundled its vendored copy, leaving only the thin intern/meshoptimizer_bridge wrapper, and with WITH_STRICT_BUILD_OPTIONS its CMake lookup becomes find_package(meshoptimizer REQUIRED) for the imported target meshoptimizer::meshoptimizer. With USE=gltfpack the package also installs gltfpack, upstream's standalone command-line glTF optimizer. It is off by default because it is an end-user tool rather than part of the library ABI, and no package in this overlay depends on it.