# obs-vkcapture Runtime Assets Fluxer can launch Linux games with OBS-compatible Vulkan/OpenGL capture enabled. The Fluxer code in this package does not include obs-vkcapture source code; it only sets launch environment variables and speaks the OBS-compatible capture socket protocol implemented by the Rust backend. The Rust receiver treats OBS import modes as a fallback ladder: - `default-dmabuf`, `no-modifiers-dmabuf`, and `linear-dmabuf` request GPU DMA-BUF descriptors from the hook. Until a local GPU importer validates those descriptors end to end, Fluxer reports them as requested rather than available. - `linear-host-mapped-dmabuf` is the conservative CPU fallback. Frames carry an NV12 CPU payload, and may also expose source texture DMA-BUF metadata so the downstream native WebRTC layer can opportunistically try GPU import before falling back to the CPU payload. - Unsupported host-mapped layouts, invalid file descriptors, unsupported fourcc values, and invalid strides/offsets must surface as lifecycle diagnostics and must not be treated as successful capture. If Fluxer ships obs-vkcapture hook binaries under `obs-vkcapture/`, treat those files as a separate third-party runtime component. The upstream project currently ships GNU GPL version 2 license text, and distro metadata may label the package as GPL-2.0-or-later. Use the more conservative GPL-2.0 boundary unless upstream files in the vendored revision clearly state otherwise. Distribution checklist for bundled hook assets: - Keep the obs-vkcapture binaries and manifests under `obs-vkcapture/`. - Include the exact upstream license text and copyright notices next to the bundled assets. - Record the upstream repository URL, revision, local patches, and build script. - Provide corresponding source for the exact shipped binaries, or a compliant written source offer when applicable. - Keep package metadata including `THIRD_PARTY_OBS_VKCAPTURE.md` and `obs-vkcapture/**/*`; loader tests assert those package entries. - Do not copy obs-vkcapture implementation code into AGPL-licensed Fluxer modules unless the license compatibility has been explicitly reviewed.