Constant ovr_sys::ovrLayerFlag_HeadLocked

pub const ovrLayerFlag_HeadLocked: ovrLayerFlags = 0x04;

Mark this surface as “headlocked”, which means it is specified relative to the HMD and moves with it, rather than being specified relative to sensor/torso space and remaining still while the head moves.

What used to be ovrLayerType_QuadHeadLocked is now ovrLayerType_Quad plus this flag.

However the flag can be applied to any layer type to achieve a similar effect.