• Lynne's avatar
    hwcontext: add av_hwdevice_ctx_create_derived_opts · 2e08b394
    Lynne authored
    This allows for users who derive devices to set options for the
    new device context they derive.
    The main use case of this is to allow users to enable extensions
    (such as surface drawing extensions) in Vulkan while deriving from
    the device their frames are on. That way, users don't need to write
    any initialization code themselves, since the Vulkan spec invalidates
    mixing instances, physical devices and active devices.
    Apart from Vulkan, other hwcontexts ignore the opts argument since they
    don't support options at all (or in VAAPI and OpenCL's case, options are
    currently only used for device selection, which device_derive overrides).
    2e08b394