Struct TrustedFlatlandConfig 

pub struct TrustedFlatlandConfig {
    pub schedule_asap: Option<bool>,
    pub pass_acquire_fences: Option<bool>,
    pub skips_present_credits: Option<bool>,
    /* private fields */
}

All arguments are optional; default values will be provided if they are absent. By default, the resulting Flatland will behave identically to connecting to the fuchsia.ui.composition.Flatland service instead of connecting via the factory.

Fields

schedule_asap: Option<bool>

If true and requested_presentation_time in [fuchsia.ui.composition/Flatland.Present] is set to 0 or less than or equal to the nearest presentation time, a frame will be scheduled to be presented as soon as all acquire fences are signaled, instead of waiting for other clients to present within the same vsync. This allows the caller to decide when to wake up for preparing a frame.

If requested_presentation_time is set to a value greater than the nearest presentation time, this flag will have no effect and the wakeup time decision will be made by the scheduler.

If absent, schedule_asap is false.

pass_acquire_fences: Option<bool>

If true, Scenic should pass acquire fences to the drivers for composition HW, instead of waiting for them on CPU. This can improve performance by reducing CPU overhead.

If absent, pass_acquire_fences is false.

skips_present_credits: Option<bool>

If true, the client will not utilize Flatland’s built in frame-scheduling mechanism and will ignore present credits, instead relying on their own flow control system.

If absent, skips_present_credits is false.

Trait Implementations

impl Debug for TrustedFlatlandConfig

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

Formats the value using the given formatter.

impl Decode<TrustedFlatlandConfig, DefaultFuchsiaResourceDialect> for TrustedFlatlandConfig

fn new_empty() -> Self

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<'_, DefaultFuchsiaResourceDialect>, offset: usize, depth: Depth, ) -> Result<()>

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

impl Default for TrustedFlatlandConfig

fn default() -> TrustedFlatlandConfig

Returns the “default value” for a type.

impl Encode<TrustedFlatlandConfig, DefaultFuchsiaResourceDialect> for &mut TrustedFlatlandConfig

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

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

impl PartialEq for TrustedFlatlandConfig

fn eq(&self, other: &TrustedFlatlandConfig) -> 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 ResourceTypeMarker for TrustedFlatlandConfig

type Borrowed<'a> = &'a mut TrustedFlatlandConfig

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

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned, ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for TrustedFlatlandConfig

type Owned = TrustedFlatlandConfig

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 Standalone<DefaultFuchsiaResourceDialect> for TrustedFlatlandConfig

impl StructuralPartialEq for TrustedFlatlandConfig