OpenGL is **deprecated on macOS 10.14+**. Long-term renderer options: **MoltenVK** (Vulkan-over-Metal), native **Metal** backend, or **OpenGL ES** via ANGLE — OpenGL ES is already included as a vendor (`Vendor/OpenGL-Registry/api`) and is a viable fallback target.

[github-actions]

Part of milestone [Long-Term] 4. Cross-Platform Build & Runtime Support.
Tracks: OpenGL is deprecated on macOS 10.14+. Long-term renderer options: MoltenVK (Vulkan-over-Metal), native Metal backend, or OpenGL ES via ANGLE — OpenGL ES is already included as a vendor (Vendor/OpenGL-Registry/api) and is a viable fallback target.