Enum bevy::window::PresentMode

#[repr(C)]
pub enum PresentMode {
    AutoVsync,
    AutoNoVsync,
    Immediate,
    Mailbox,
    Fifo,
}

Presentation mode for a Window.

The presentation mode specifies when a frame is presented to the window. The Fifo option corresponds to a traditional VSync, where the framerate is capped by the display refresh rate. Both Immediate and Mailbox are low-latency and are not capped by the refresh rate, but may not be available on all platforms. Tearing may be observed with Immediate mode, but will not be observed with Mailbox or Fifo.

AutoVsync or AutoNoVsync will gracefully fallback to Fifo when unavailable.

Immediate or Mailbox will panic if not supported by the platform.

Variants

AutoVsync

Chooses FifoRelaxed -> Fifo based on availability.

Because of the fallback behavior, it is supported everywhere.

AutoNoVsync

Chooses Immediate -> Mailbox -> Fifo (on web) based on availability.

Because of the fallback behavior, it is supported everywhere.

Immediate

The presentation engine does not wait for a vertical blanking period and the request is presented immediately. This is a low-latency presentation mode, but visible tearing may be observed. Not optimal for mobile.

Selecting this variant will panic if not supported, it is preferred to use PresentMode::AutoNoVsync.

Mailbox

The presentation engine waits for the next vertical blanking period to update the current image, but frames may be submitted without delay. This is a low-latency presentation mode and visible tearing will not be observed. Not optimal for mobile.

Selecting this variant will panic if not supported, it is preferred to use PresentMode::AutoNoVsync.

Fifo

The presentation engine waits for the next vertical blanking period to update the current image. The framerate will be capped at the display refresh rate, corresponding to the VSync. Tearing cannot be observed. Optimal for mobile.

Trait Implementations

impl Clone for PresentMode

fn clone(&self) -> PresentMode

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Default for PresentMode

fn default() -> PresentMode

Returns the “default value” for a type.

impl Enum for PresentMode

fn field(&self, __name_param: &str) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field (in the current variant) with the given name.

fn field_at(&self, __index_param: usize) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field (in the current variant) at the given index.

fn field_mut( &mut self, __name_param: &str ) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field (in the current variant) with the given name.

fn field_at_mut( &mut self, __index_param: usize ) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field (in the current variant) at the given index.

fn index_of(&self, __name_param: &str) -> Option<usize>

Returns the index of the field (in the current variant) with the given name.

fn name_at(&self, __index_param: usize) -> Option<&str>

Returns the name of the field (in the current variant) with the given index.

fn iter_fields(&self) -> VariantFieldIter<'_>

Returns an iterator over the values of the current variant’s fields.

fn field_len(&self) -> usize

Returns the number of fields in the current variant.

fn variant_name(&self) -> &str

The name of the current variant.

fn variant_index(&self) -> usize

The index of the current variant.

fn variant_type(&self) -> VariantType

The type of the current variant.

fn clone_dynamic(&self) -> DynamicEnum

fn is_variant(&self, variant_type: VariantType) -> bool

Returns true if the current variant’s type matches the given one.

fn variant_path(&self) -> String

Returns the full path to the current variant.

impl FromReflect for PresentMode

fn from_reflect(__param0: &(dyn Reflect + 'static)) -> Option<PresentMode>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn Reflect, Global> ) -> Result<Self, Box<dyn Reflect, Global>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl GetTypeRegistration for PresentMode

fn get_type_registration() -> TypeRegistration

impl Hash for PresentMode

fn hash<__H>(&self, state: &mut __H)where __H: Hasher,

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl PartialEq<PresentMode> for PresentMode

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

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

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

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

impl Reflect for PresentMode

fn type_name(&self) -> &str

Returns the type name of the underlying type.

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn into_any(self: Box<PresentMode, Global>) -> Box<dyn Any, Global>

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<PresentMode, Global>) -> Box<dyn Reflect, Global>

Casts this type to a boxed reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.

fn clone_value(&self) -> Box<dyn Reflect, Global>

Clones the value as a Reflect trait object.

fn set( &mut self, __value_param: Box<dyn Reflect, Global> ) -> Result<(), Box<dyn Reflect, Global>>

Performs a type-checked assignment of a reflected value to this value.

fn apply(&mut self, __value_param: &(dyn Reflect + 'static))

Applies a reflected value to this value.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<PresentMode, Global>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result.

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

Debug formatter for the value.

fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl TypePath for PresentMode

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the moudle the type is in, or None if it is anonymous.

impl Typed for PresentMode

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl Copy for PresentMode

impl Eq for PresentMode

impl StructuralEq for PresentMode

impl StructuralPartialEq for PresentMode