Enum wayland_client::wayland::shm::WlBufferEvent [−] [src]

pub enum WlBufferEvent {
    Release,
}

Variants

Release

compositor releases buffer

Sent when this wl_buffer is no longer used by the compositor. The client is now free to re-use or destroy this buffer and its backing storage.

If a client receives a release event before the frame callback requested in the same wl_surface.commit that attaches this wl_buffer to a surface, then the client is immediately free to re-use the buffer and its backing storage, and does not need a second buffer for the next surface content update. Typically this is possible, when the compositor maintains a copy of the wl_surface contents, e.g. as a GL texture. This is an important optimization for GL(ES) compositors with wl_shm clients.

Trait Implementations

impl Debug for WlBufferEvent
[src]

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.