Add filament project#15723
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New OSS-Fuzz integration for google/filament (Google's real-time PBR renderer). Adds three libFuzzer targets over filament's untrusted-asset loaders: - filameshio_fuzzer: MeshReader::loadMeshFromBuffer (.filamesh) - gltfio_meshopt_fuzzer: gltfio EXT_meshopt_compression decode (glTF/GLB) - gltfio_accessor_fuzzer: gltfio cgltf accessor unpack, incl. sparse (glTF/GLB) Built Release with -DNDEBUG so the shipping configuration is exercised (filament gates cgltf_validate behind #ifndef NDEBUG and meshoptimizer enforces decoder preconditions with assert() only).
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DavidKorczynski
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Jun 16, 2026
DavidKorczynski
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Can you please coordinate this with upstream maintainers?
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New project integration: google/filament
filament is Google's open-source real-time physically based renderer (Android, desktop, web). It loads untrusted 3D assets, so its asset loaders are a meaningful attack surface. filament is not currently an OSS-Fuzz project and ships no first-party fuzz target (the only in-tree fuzzers are vendored third-party suites that don't exercise filament's loaders).
This integration adds three libFuzzer targets over filament's untrusted-asset decode paths:
filameshio_fuzzerfilamesh::MeshReader::loadMeshFromBuffer.filameshgltfio_meshopt_fuzzerfilament::gltfio::utility::decodeMeshoptCompression(real cgltf parse +EXT_meshopt_compression)gltfio_accessor_fuzzercgltf_accessor_unpack_floatsover every accessor (incl. sparse)Notes for reviewers:
Releasewith-DNDEBUGon purpose: filament gatescgltf_validatebehind#ifndef NDEBUG, and meshoptimizer enforces its decoder preconditions withassert()only — so the shipping configuration is the one worth fuzzing (ASan still observes OOB writes).build.shrelaxes filament's-Werror/-Wthread-safetyonly as needed to build under the OSS-Fuzz clang + sanitizer flags; it uses the NOOP backend so the targets run headless (no GPU).libc++/ninjainstalled in the Dockerfile; targets link the realfilameshio/gltfio_corelibraries.primary_contactset inproject.yaml.