Enum MaskMode 

pub enum MaskMode {
    Alpha,
    InvertedAlpha,
    Luminance,
    InvertedLuminance,
}

How linear-premultiplied content becomes a layer’s mask coverage.

Coverage is computed in the compositing color space and clamped to 0..=1 before optional inversion, without altering working colors. Alpha-zero pixels have zero ordinary coverage, even with hidden extended RGB; inverted modes therefore retain source content at those pixels.

Variants

Alpha

Use only the completed mask’s alpha.

InvertedAlpha

One minus the completed mask’s alpha, including transparent artwork.

Luminance

Use Rec.709 luminance of linear premultiplied RGB, already alpha-weighted.

InvertedLuminance

One minus clamped linear-premultiplied luminance; alpha is not inverted first.

Trait Implementations

impl Clone for MaskMode

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 MaskMode

impl Debug for MaskMode

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

Formats the value using the given formatter.

impl Default for MaskMode

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MaskMode

impl PartialEq for MaskMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MaskMode