Enum vulkano::swapchain::CompositeAlpha

#[non_exhaustive]
#[repr(u32)]
pub enum CompositeAlpha {
    Opaque = 1,
    PreMultiplied = 2,
    PostMultiplied = 4,
    Inherit = 8,
}

How the alpha values of the pixels of the window are treated.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Opaque = 1

The alpha channel of the image is ignored. All the pixels are considered as if they have a value of 1.0.

PreMultiplied = 2

The alpha channel of the image is respected. The color channels are expected to have already been multiplied by the alpha value.

PostMultiplied = 4

The alpha channel of the image is respected. The color channels will be multiplied by the alpha value by the compositor before being added to what is behind.

Inherit = 8

Let the operating system or driver implementation choose.

Trait Implementations

impl Clone for CompositeAlpha

fn clone(&self) -> CompositeAlpha

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CompositeAlpha

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

Formats the value using the given formatter.

impl From<CompositeAlpha> for CompositeAlphaFlagsKHR

fn from(val: CompositeAlpha) -> Self

Converts to this type from the input type.

impl From<CompositeAlpha> for CompositeAlphas

fn from(val: CompositeAlpha) -> Self

Converts to this type from the input type.

impl FromIterator<CompositeAlpha> for CompositeAlphas

fn from_iter<T>(iter: T) -> Selfwhere T: IntoIterator<Item = CompositeAlpha>,

Creates a value from an iterator.

impl Hash for CompositeAlpha

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

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 for CompositeAlpha

fn eq(&self, other: &CompositeAlpha) -> 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 TryFrom<CompositeAlphaFlagsKHR> for CompositeAlpha

type Error = ()

The type returned in the event of a conversion error.

fn try_from(val: CompositeAlphaFlagsKHR) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for CompositeAlpha

impl Eq for CompositeAlpha

impl StructuralEq for CompositeAlpha

impl StructuralPartialEq for CompositeAlpha