Struct glium::semaphore::Semaphore

pub struct Semaphore { /* private fields */ }

Similar to a GL sync object, this describes a semaphore which can be used for OpenGL-Vulkan command queue synchronization.

Implementations

impl Semaphore

pub unsafe fn new_from_fd<F: Facade + ?Sized>( facade: &F, fd: File ) -> Result<Self, SemaphoreCreationError>

Creates a semaphore imported from an opaque file descriptor.

pub fn wait_textures(&self, textures: Option<&[(&TextureAny, TextureLayout)]>)

Same as wait but without buffers parameter

pub fn wait<T>( &self, textures: Option<&[(&TextureAny, TextureLayout)]>, buffers: Option<&[&Buffer<T>]> )where T: Content + ?Sized,

The semaphore blocks the GPU’s command queue until the semaphore is signalled. This does not block the CPU. After this completes, the semaphore is returned to the unsignalled state. Once the operation is complete, the memory corresponding to the passed textures and buffers is made available to OpenGL. The layouts given with each texture must match the image layout used in Vulkan directly before the semaphore is signalled by it.

Caution

• You must make sure that a command to signal the semaphore you are waiting on has been flushed to the command queue (Possibly by the external API). Failure to do so may result in segfaults depending on the driver used.

pub fn signal_textures(&self, textures: Option<&[(&TextureAny, TextureLayout)]>)

Same as signal, but without buffers parameter

pub fn signal<T>( &self, textures: Option<&[(&TextureAny, TextureLayout)]>, buffers: Option<&[&Buffer<T>]> )where T: Content + ?Sized,

Sends signal through semaphore. The memory of the textures and buffers is made available to the external API. Before signalling the semaphore, the textures are transitioned into the layout specified.

Trait Implementations

impl Drop for Semaphore

fn drop(&mut self)

Executes the destructor for this type.

impl GlObject for Semaphore

type Id = u32

The type of identifier for this object.

fn get_id(&self) -> c_uint

Returns the id of the object.