Struct wayland_protocols::presentation_time::client::wp_presentation_feedback::Kind

pub struct Kind { /* fields omitted */ }

[−] Expand description

bitmask of flags in presented event

These flags provide information about how the presentation of the related content update was done. The intent is to help clients assess the reliability of the feedback and the visual quality with respect to possible tearing and timings. The flags are:

VSYNC: The presentation was synchronized to the “vertical retrace” by the display hardware such that tearing does not happen. Relying on user space scheduling is not acceptable for this flag. If presentation is done by a copy to the active frontbuffer, then it must guarantee that tearing cannot happen.

HW_CLOCK: The display hardware provided measurements that the hardware driver converted into a presentation timestamp. Sampling a clock in user space is not acceptable for this flag.

HW_COMPLETION: The display hardware signalled that it started using the new image content. The opposite of this is e.g. a timer being used to guess when the display hardware has switched to the new image content.

ZERO_COPY: The presentation of this update was done zero-copy. This means the buffer from the client was given to display hardware as is, without copying it. Compositing with OpenGL counts as copying, even if textured directly from the client buffer. Possible zero-copy cases include direct scanout of a fullscreen surface and a surface on a hardware overlay.

Implementations

impl Kind[−]

pub const Vsync: Kind[−][−]

presentation was vsync’d

pub const HwClock: Kind[−][−]

hardware provided the presentation timestamp

pub const HwCompletion: Kind[−][−]

hardware signalled the start of the presentation

pub const ZeroCopy: Kind[−][−]

presentation was done zero-copy

pub const fn empty() -> Kind[−]

Returns an empty set of flags

pub const fn all() -> Kind[−]

Returns the set containing all flags.

pub const fn bits(&self) -> u32[−]

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<Kind>[−]

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> Kind[−]

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> Kind[−]

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

pub const fn is_empty(&self) -> bool[−]

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool[−]

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Kind) -> bool[−]

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Kind) -> bool[−]

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: Kind)[−]

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Kind)[−]

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Kind)[−]

Toggles the specified flags in-place.

pub fn set(&mut self, other: Kind, value: bool)[−]

Inserts or removes the specified flags depending on the passed value.

impl Kind[−]

pub fn from_raw(n: u32) -> Option<Kind>

pub fn to_raw(&self) -> u32

Trait Implementations

impl Binary for Kind[+]

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

Formats the value using the given formatter.

impl BitAnd<Kind> for Kind[+]

type Output = Kind

The resulting type after applying the & operator.

fn bitand(self, other: Kind) -> Kind[−]

Returns the intersection between the two sets of flags.

impl BitAndAssign<Kind> for Kind[+]

fn bitand_assign(&mut self, other: Kind)[−]

Disables all flags disabled in the set.

impl BitOr<Kind> for Kind[+]

type Output = Kind

The resulting type after applying the | operator.

fn bitor(self, other: Kind) -> Kind[−]

Returns the union of the two sets of flags.

impl BitOrAssign<Kind> for Kind[+]

fn bitor_assign(&mut self, other: Kind)[−]

Adds the set of flags.

impl BitXor<Kind> for Kind[+]

type Output = Kind

The resulting type after applying the ^ operator.

fn bitxor(self, other: Kind) -> Kind[−]

Returns the left flags, but with all the right flags toggled.

impl BitXorAssign<Kind> for Kind[+]

fn bitxor_assign(&mut self, other: Kind)[−]

Toggles the set of flags.

impl Clone for Kind[+]

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fn clone(&self) -> Kind[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for Kind

impl Debug for Kind[+]

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

Formats the value using the given formatter.

impl Eq for Kind

impl Extend<Kind> for Kind[+]

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fn extend<T: IntoIterator<Item = Kind>>(&mut self, iterator: T)[−]

Extends a collection with the contents of an iterator.

pub fn extend_one(&mut self, item: A)[−]

🔬 This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

pub fn extend_reserve(&mut self, additional: usize)[−]

🔬 This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<Kind> for Kind[+]

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fn from_iter<T: IntoIterator<Item = Kind>>(iterator: T) -> Kind[−]

Creates a value from an iterator.

impl Hash for Kind[+]

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fn hash<__H: Hasher>(&self, state: &mut __H)[−]

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, [−]

Feeds a slice of this type into the given Hasher.

impl LowerHex for Kind[+]

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

Formats the value using the given formatter.

impl Not for Kind[+]

type Output = Kind

The resulting type after applying the ! operator.

fn not(self) -> Kind[−]

Returns the complement of this set of flags.

impl Octal for Kind[+]

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

Formats the value using the given formatter.

impl Ord for Kind[+]

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fn cmp(&self, other: &Kind) -> Ordering[−]

This method returns an Ordering between self and other.

#[must_use]

pub fn max(self, other: Self) -> Self[−]

Compares and returns the maximum of two values.

#[must_use]

pub fn min(self, other: Self) -> Self[−]

Compares and returns the minimum of two values.

#[must_use]

pub fn clamp(self, min: Self, max: Self) -> Self[−]

Restrict a value to a certain interval.

impl PartialEq<Kind> for Kind[+]

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fn eq(&self, other: &Kind) -> bool[−]

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Kind) -> bool[−]

This method tests for !=.

impl PartialOrd<Kind> for Kind[+]

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fn partial_cmp(&self, other: &Kind) -> Option<Ordering>[−]

This method returns an ordering between self and other values if one exists.

#[must_use]

pub fn lt(&self, other: &Rhs) -> bool[−]

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

pub fn le(&self, other: &Rhs) -> bool[−]

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

pub fn gt(&self, other: &Rhs) -> bool[−]

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

pub fn ge(&self, other: &Rhs) -> bool[−]

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Kind

impl StructuralPartialEq for Kind

impl Sub<Kind> for Kind[+]

type Output = Kind

The resulting type after applying the - operator.

fn sub(self, other: Kind) -> Kind[−]

Returns the set difference of the two sets of flags.

impl SubAssign<Kind> for Kind[+]

fn sub_assign(&mut self, other: Kind)[−]

Disables all flags enabled in the set.

impl UpperHex for Kind[+]

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

Formats the value using the given formatter.