#[repr(C)]
pub enum CompositeAlphaMode {
    Auto,
    Opaque,
    PreMultiplied,
    PostMultiplied,
    Inherit,
}
Expand description

Specifies how the alpha channel of the textures should be handled during compositing.

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Auto

Chooses either Opaque or Inherit automatically,depending on the alpha_mode that the current surface can support.

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Opaque

The alpha channel, if it exists, of the textures is ignored in the compositing process. Instead, the textures is treated as if it has a constant alpha of 1.0.

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PreMultiplied

The alpha channel, if it exists, of the textures is respected in the compositing process. The non-alpha channels of the textures are expected to already be multiplied by the alpha channel by the application.

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PostMultiplied

The alpha channel, if it exists, of the textures is respected in the compositing process. The non-alpha channels of the textures are not expected to already be multiplied by the alpha channel by the application; instead, the compositor will multiply the non-alpha channels of the texture by the alpha channel during compositing.

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Inherit

The alpha channel, if it exists, of the textures is unknown for processing during compositing. Instead, the application is responsible for setting the composite alpha blending mode using native WSI command. If not set, then a platform-specific default will be used.

Trait Implementations§

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impl Clone for CompositeAlphaMode

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fn clone(&self) -> CompositeAlphaMode

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CompositeAlphaMode

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

Formats the value using the given formatter. Read more
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impl Default for CompositeAlphaMode

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for CompositeAlphaMode

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for CompositeAlphaMode

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq<CompositeAlphaMode> for CompositeAlphaMode

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

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

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for CompositeAlphaMode

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impl Eq for CompositeAlphaMode

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impl StructuralEq for CompositeAlphaMode

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impl StructuralPartialEq for CompositeAlphaMode

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,