#[non_exhaustive]
pub enum Request { Destroy, SetAcquireFence { fd: OwnedFd, }, GetRelease { release: New<ZwpLinuxBufferReleaseV1>, }, }

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Destroy

destroy synchronization object

Destroy this explicit synchronization object.

Any fence set by this object with set_acquire_fence since the last commit will be discarded by the server. Any fences set by this object before the last commit are not affected.

zwp_linux_buffer_release_v1 objects created by this object are not affected by this request.

This is a destructor, once received this object cannot be used any longer.

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SetAcquireFence

Fields

§fd: OwnedFd

acquire fence fd

set the acquire fence

Set the acquire fence that must be signaled before the compositor may sample from the buffer attached with wl_surface.attach. The fence is a dma_fence kernel object.

The acquire fence is double-buffered state, and will be applied on the next wl_surface.commit request for the associated surface. Thus, it applies only to the buffer that is attached to the surface at commit time.

If the provided fd is not a valid dma_fence fd, then an INVALID_FENCE error is raised.

If a fence has already been attached during the same commit cycle, a DUPLICATE_FENCE error is raised.

If the associated wl_surface was destroyed, a NO_SURFACE error is raised.

If at surface commit time the attached buffer does not support explicit synchronization, an UNSUPPORTED_BUFFER error is raised.

If at surface commit time there is no buffer attached, a NO_BUFFER error is raised.

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GetRelease

Fields

§release: New<ZwpLinuxBufferReleaseV1>

new zwp_linux_buffer_release_v1 object

release fence for last-attached buffer

Create a listener for the release of the buffer attached by the client with wl_surface.attach. See zwp_linux_buffer_release_v1 documentation for more information.

The release object is double-buffered state, and will be associated with the buffer that is attached to the surface at wl_surface.commit time.

If a zwp_linux_buffer_release_v1 object has already been requested for the surface in the same commit cycle, a DUPLICATE_RELEASE error is raised.

If the associated wl_surface was destroyed, a NO_SURFACE error is raised.

If at surface commit time there is no buffer attached, a NO_BUFFER error is raised.

Implementations§

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impl Request

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pub fn opcode(&self) -> u16

Get the opcode number of this message

Trait Implementations§

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impl Debug for Request

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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Returns the argument unchanged.

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Calls U::from(self).

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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.