Enum PresentMode

#[repr(i32)]
pub enum PresentMode {
    Immediate = 0,
    Mailbox = 1,
    FIFO = 2,
    FIFORelaxed = 3,
}

Presentation mode supported for a surface

Variants

Immediate = 0

The presentation engine does not wait for a vertical blanking period to update the current image, meaning this mode may result in visible tearing

Mailbox = 1

The presentation engine waits for the next vertical blanking period to update the current image. Tearing cannot be observed. An internal single-entry queue is used to hold pending presentation requests. If the queue is full when a new presentation request is received, the new request replaces the existing entry, and any images associated with the prior entry become available for re-use by the application

FIFO = 2

The presentation engine waits for the next vertical blanking period to update the current image. Tearing cannot be observed. An internal queue is used to hold pending presentation requests. New requests are appended to the end of the queue, and one request is removed from the beginning of the queue and processed during each vertical blanking period in which the queue is non-empty.

FIFORelaxed = 3

The presentation engine generally waits for the next vertical blanking period to update the currnt image. If a vertical blanking period has already passed since the last update of the current image then the presentation engine does not wait for another vertical blanking period for the update, meaning this mode may result in visible tearing in this case

Trait Implementations

impl Clone for PresentMode

fn clone(&self) -> PresentMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PresentMode

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

Formats the value using the given formatter.

impl PartialEq for PresentMode

fn eq(&self, other: &PresentMode) -> 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 Copy for PresentMode

impl Eq for PresentMode

impl StructuralPartialEq for PresentMode