Enum BlendMode

pub enum BlendMode {
    None,
    Blend,
    Add,
}

How drawn pixels are blended with the previously drawn pixels.

Variants

None

All channels are replaced with the color being drawn, including alpha.

Blend

dstRGB = (srcRGB * srcA) + (dstRGB * (1 - srcA))
dstA = srcA + (dstA * (1 - srcA))

Where dst is the color of the framebuffer, and src is the color being drawn on it.

Add

dstRGB = (srcRGB * srcA) + dstRGB
dstA = dstA

Where dst is the color of the framebuffer, and src is the color being drawn on it.

Trait Implementations

impl Clone for BlendMode

fn clone(&self) -> BlendMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlendMode

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

Formats the value using the given formatter.

impl Default for BlendMode

fn default() -> BlendMode

Returns the “default value” for a type.

impl Ord for BlendMode

fn cmp(&self, other: &BlendMode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for BlendMode

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for BlendMode

fn partial_cmp(&self, other: &BlendMode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for BlendMode

impl Eq for BlendMode

impl StructuralPartialEq for BlendMode