darkly 0.5.0

A GPU-native paint engine on wgpu: brushes, layers, blend modes, masks, selections, and undo.
Documentation 
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use crate::gpu::blend_mode::BlendModeRegistration;

pub fn register() -> BlendModeRegistration {
    BlendModeRegistration {
        type_id: "difference",
        display_name: "Difference",
        category: "Inversion",
        gpu_value: 11,
        wgsl_math: "Cs = abs(fg.rgb - bg.rgb);",
    }
}