Constant windows::Win32::Media::MediaFoundation::D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_CONFIGURABLE_GRID_PARTITION
pub const D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_CONFIGURABLE_GRID_PARTITION: D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE;