Struct PresentationInfo

pub struct PresentationInfo {
    pub latch_point: Option<i64>,
    pub presentation_time: Option<i64>,
    /* private fields */
}

The times we predict for a future presentation, expressed in nanoseconds in the CLOCK_MONOTONIC timebase.

Fields

latch_point: Option<i64>

The time where Scenic processes all pending updates to its scene graph and render a new frame. Clients should aim to have all commands sent and acquire fences reached in order to have their content be presented at the corresponding presentation_time. The latch_point is guaranteed to be less than presentation_time.

presentation_time: Option<i64>

The time in which the enqueued operations submitted before latch_point take visible effect. This time is usually but not necessarily vsync.

Trait Implementations

impl Clone for PresentationInfo

fn clone(&self) -> PresentationInfo

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PresentationInfo

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

Formats the value using the given formatter.

impl<D> Decode<PresentationInfo, D> for PresentationInfo

where D: ResourceDialect,

fn new_empty() -> PresentationInfo

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for PresentationInfo

fn default() -> PresentationInfo

Returns the “default value” for a type.

impl<D> Encode<PresentationInfo, D> for &PresentationInfo

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for PresentationInfo

fn eq(&self, other: &PresentationInfo) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TypeMarker for PresentationInfo

type Owned = PresentationInfo

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for PresentationInfo

type Borrowed<'a> = &'a PresentationInfo

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<PresentationInfo as TypeMarker>::Owned, ) -> <PresentationInfo as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for PresentationInfo

impl StructuralPartialEq for PresentationInfo