Enum BlendFactor 

pub enum BlendFactor {
    Zero,
    One,
    SourceColor,
    OneMinusSourceColor,
    DestinationColor,
    OneMinusDestinationColor,
    SourceAlpha,
    OneMinusSourceAlpha,
    DestinationAlpha,
    OneMinusDestinationAlpha,
    ConstantColor,
    OneMinusConstantColor,
    ConstantAlpha,
    OneMinusConstantAlpha,
    SourceAlphaSaturated,
}

One term of a blend equation: the factor the source or destination value is multiplied by.

A blend state pairs one of these as the source factor and one as the destination factor, then combines the two results with a BlendOperation. The conventional alpha-blend pairing is SourceAlpha as the source and OneMinusSourceAlpha as the destination, with BlendOperation::Add.

Variants

Zero

0 — the term contributes nothing.

One

1 — the term passes through unchanged.

SourceColor

The source color, for a source factor; the destination color, for a destination factor.

OneMinusSourceColor

1 minus the source color, for a source factor.

DestinationColor

The destination color, for a source factor; the source color, for a destination factor.

OneMinusDestinationColor

1 minus the destination color, for a source factor.

SourceAlpha

The source alpha.

OneMinusSourceAlpha

1 minus the source alpha. The conventional destination factor for alpha blending.

DestinationAlpha

The destination alpha, for a destination factor.

OneMinusDestinationAlpha

1 minus the destination alpha, for a source factor.

ConstantColor

The blend constant set via setBlendConstant.

OneMinusConstantColor

1 minus the blend constant.

ConstantAlpha

The alpha of the blend constant.

OneMinusConstantAlpha

1 minus the alpha of the blend constant.

SourceAlphaSaturated

The smaller of the source alpha and 1 - destination alpha, which is what keeps repeated alpha-blended passes from accumulating saturation.

Trait Implementations

impl Clone for BlendFactor

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BlendFactor

impl Debug for BlendFactor

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

Formats the value using the given formatter.

impl Default for BlendFactor

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BlendFactor

impl Hash for BlendFactor

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 BlendFactor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BlendFactor