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path: root/rust/crates/compositor/src/blend_mode.rs
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use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "kebab-case")]
pub enum BlendMode {
    Normal,
    Darken,
    Multiply,
    ColorBurn,
    Lighten,
    Screen,
    PlusLighter,
    ColorDodge,
    Overlay,
    SoftLight,
    HardLight,
    Difference,
    Exclusion,
    Hue,
    Saturation,
    Color,
    Luminosity,
}

impl BlendMode {
    pub fn shader_code(self) -> u32 {
        match self {
            Self::Normal => 0,
            Self::Darken => 1,
            Self::Multiply => 2,
            Self::ColorBurn => 3,
            Self::Lighten => 4,
            Self::Screen => 5,
            Self::PlusLighter => 6,
            Self::ColorDodge => 7,
            Self::Overlay => 8,
            Self::SoftLight => 9,
            Self::HardLight => 10,
            Self::Difference => 11,
            Self::Exclusion => 12,
            Self::Hue => 13,
            Self::Saturation => 14,
            Self::Color => 15,
            Self::Luminosity => 16,
        }
    }
}