Enum tetra::graphics::BlendFactor

source · [−]

pub enum BlendFactor {
Show 13 variants    Zero,
    One,
    Src,
    OneMinusSrc,
    SrcAlpha,
    OneMinusSrcAlpha,
    Dst,
    OneMinusDst,
    DstAlpha,
    OneMinusDstAlpha,
    SrcAlphaSaturated,
    Constant,
    OneMinusConstant,
}

Expand description

Defines a multiplier that will be applied to a color or alpha value before blending it.

Variants

`Zero`

Each component will be multiplied by zero.

Color: r * 0, g * 0, b * 0
Alpha: a * 0

`One`

Each component will be multiplied by one.

Color: r * 1, g * 1, b * 1
Alpha: a * 1

`Src`

Each component will be multiplied by the source value (color or alpha, depending on the context).

Color: r * srcR, g * srcG, b * srcB
Alpha: a * srcA

`OneMinusSrc`

Each component will be multiplied by the inverse of the source value (color or alpha, depending on the context).

Color: r * (1 - srcR), g * (1 - srcG, b * (1 - srcB)
Alpha: a * (1 - srcA)

`SrcAlpha`

Each component will be multiplied by the source alpha value.

Color: r * srcA, g * srcA, b * srcA
Alpha: a * srcA

`OneMinusSrcAlpha`

Each component will be multiplied by the inverse of the source alpha value.

Color: r * (1 - srcA), g * (1 - srcA), b * (1 - srcA)
Alpha: a * (1 - srcA)

`Dst`

Each component will be multiplied by the destination value (color or alpha, depending on the context).

Color: r * dstR, g * dstG, b * dstB
Alpha: a * dstA

`OneMinusDst`

Each component will be multiplied by the inverse of the destination value (color or alpha, depending on the context).

Color: r * (1 - dstR), g * (1 - dstG), b * (1 - dstB)
Alpha: a * (1 - dstA)

`DstAlpha`

Each component will be multiplied by the destination alpha value.

Color: r * dstA, g * dstA, b * dstA
Alpha: a * dstA

`OneMinusDstAlpha`

Each component will be multiplied by the inverse of the destination alpha value.

Color: r * (1 - dstA), g * (1 - dstA), b * (1 - dstA)
Alpha: a * dstA

`SrcAlphaSaturated`

Each component will be multiplied by either the source alpha value, or its inverse, whichever is greater.

When applied to an alpha value, this acts the same as BlendFactor::One.

Color: r * min(dstA, 1 - dstA), g * min(dstA, 1 - dstA), b * min(dstA, 1 - dstA)
Alpha: a * 1

`Constant`

Each component will be multiplied by a constant value.

The means of setting this constant is not yet exposed in Tetra - please create an issue or a PR if you need to use this!

Color: r * c, g * c, b * c
Alpha: a * c

`OneMinusConstant`

Each component will be multiplied by the inverse of a constant value.

The means of setting this constant is not yet exposed in Tetra - please create an issue or a PR if you need to use this!

Color: r * (1 - c), g * (1 - c), b * (1 - c)
Alpha: a * (1 - c)

Trait Implementations

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impl Clone for BlendFactor

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fn clone(&self) -> BlendFactor

Returns a copy of the value. Read more

This method tests for !=.

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impl StructuralPartialEq for BlendFactor

Auto Trait Implementations

impl RefUnwindSafe for BlendFactor

impl Send for BlendFactor

impl Sync for BlendFactor

impl Unpin for BlendFactor

fn into(self) -> U

Calls U::from(self).

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

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

source

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

source

fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

source

impl<T, U> TryFrom for T where
U: Into<T>,

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>::Error>

Performs the conversion.

source

impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum tetra::graphics::BlendFactor

Variants

Zero

One

Src

OneMinusSrc

SrcAlpha

OneMinusSrcAlpha

Dst

OneMinusDst

DstAlpha

OneMinusDstAlpha

SrcAlphaSaturated

Constant

OneMinusConstant

Trait Implementations

impl Clone for BlendFactor

fn clone(&self) -> BlendFactor

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

impl Debug for BlendFactor

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

impl PartialEq<BlendFactor> for BlendFactor

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

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

impl Copy for BlendFactor

impl Eq for BlendFactor

impl StructuralEq for BlendFactor

impl StructuralPartialEq for BlendFactor

Auto Trait Implementations

impl RefUnwindSafe for BlendFactor

impl Send for BlendFactor

impl Sync for BlendFactor

impl Unpin for BlendFactor

impl UnwindSafe for BlendFactor

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

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

`Zero`

`One`

`Src`

`OneMinusSrc`

`SrcAlpha`

`OneMinusSrcAlpha`

`Dst`

`OneMinusDst`

`DstAlpha`

`OneMinusDstAlpha`

`SrcAlphaSaturated`

`Constant`

`OneMinusConstant`

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,