Blend Modes
From the Skia documentation:
Mode | Description |
​Clear​ | Replaces destination with Alpha and Color components set to zero; a fully transparent pixel. |
​Src​ | Replaces destination with source. Destination alpha and colorcomponent values are ignored. |
​Dst​ | Preserves destination, ignoring source. Drawing with Paint set to kDst has no effect. |
​Src Over​ | Replaces destination with source blended with destination. If source is opaque, replaces destination with source. Used as the default Blend_Mode for SkPaint. |
​Dst Over​ | Replaces destination with destination blended with source. If destination is opaque, has no effect. |
​Src In​ | Replaces destination with source using destination opacity. |
​Dst In​ | Scales destination opacity by source opacity. |
​Src Out​ | Replaces destination with source using the inverse of destination opacity, drawing source fully where destination opacity is zero. |
​Dst Out​ | Replaces destination opacity with inverse of source opacity. If source is transparent, has no effect. |
​Src Atop​ | Blends destination with source using read destination opacity. |
​Dst Atop​ | Blends destination with source using source opacity. |
​Xor​ | Blends destination by exchanging transparency of the source and destination. |
​Plus​ | Replaces destination with source and destination added together. |
​Modulate​ | Replaces destination with source and destination multiplied together. |
​Screen​ | Replaces destination with inverted source and destination multiplied together. |
​Overlay​ | Replaces destination with multiply or screen, depending on destination. |
​Darken​ | Replaces destination with darker of source and destination. |
​Lighten​ | Replaces destination with lighter of source and destination. |
​Color Dodge​ | Makes destination brighter to reflect source. |
​Color Burn​ | Makes destination darker to reflect source. |
​Hard Light​ | Makes destination lighter or darker, depending on source. |
​Soft Light​ | Makes destination lighter or darker, depending on source. |
​Difference​ | Subtracts darker from lighter with higher contrast. |
​Exclusion​ | Subtracts darker from lighter with lower contrast. |
​Multiply​ | |
​Hue​ | Replaces hue of destination with hue of source, leaving saturation and luminosity unchanged. |
​Saturation​ | Replaces saturation of destination saturation hue of source, leaving hue and luminosity unchanged. |
​Color​ | Replaces hue and saturation of destination with hue and saturation of source, leaving luminosity unchanged. |
​Luminosity​ | Replaces luminosity of destination with luminosity of source, leaving hue and saturation unchanged. |
