Enum SpriteBlend 

pub enum SpriteBlend {
    AlphaBlend,
    Additive,
    Premultiplied,
}

GPU blend state used when drawing a sprite batch.

AlphaBlend is the default and matches normal transparent sprites. Additive accumulates colour into the framebuffer without subtracting background, which is the usual choice for sparks, fire, and other emissive particles. Premultiplied is for sources whose RGB has already been multiplied by alpha, typically when sampling a premultiplied texture.

Variants

AlphaBlend

Standard transparency: src.rgb * src.a + dst.rgb * (1 - src.a).

Additive

Additive: src.rgb + dst.rgb. Alpha is unused for the colour result.

Premultiplied

Premultiplied alpha: src.rgb + dst.rgb * (1 - src.a).

Trait Implementations

impl Clone for SpriteBlend

fn clone(&self) -> SpriteBlend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpriteBlend

impl Debug for SpriteBlend

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

Formats the value using the given formatter.

impl Default for SpriteBlend

fn default() -> SpriteBlend

Returns the “default value” for a type.

impl Eq for SpriteBlend

impl PartialEq for SpriteBlend

fn eq(&self, other: &SpriteBlend) -> 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 StructuralPartialEq for SpriteBlend