Layer & Mask Blend Modes

There are a number of modes to blend paint layers or masks.

A demonstration of each of the blend modes.

  • Normal: Standard blending mode that only takes pixel information from the current layer.

When B is set to normal, the resulting mask is just B.

  • Add: Add the current layer to the underlying layers.

When B is set to add, each corresponding pixel in both is added up. Note that where the two overlap, the values are greater than 1 due to HDR.

  • Subtract: Subtract the current layer from the underlying layers. In case of negative values, the pixel defaults to black.

When B is set to subtract, each pixel in A is subtracted by the corresponding pixel in B. Note that where B's circle does not overlap, the values are less than 0 due to HDR.

  • Multiply: Multiply the the current layer with the underlying layers.

When B is set to multiple, each pixel in A is multiplied with the corresponding pixel in B. As all values outside the circle are 0, their final values become 0.

  • Divide: Divide the underlying layers by the current layer. Dividing by 0 defaults to a value of 1, and negative values default to 0.

When B is set to divide, each pixel from A is divided by the corresponding pixel in B. As the circle in A is divided by 0, its values default to 1. The overlap is the same value as it is divided by 1.

  • Difference: Similar to subtraction, but always retains a positive value by subtracting from the greater value.

When B is set to difference, the smaller value for each pixel is subtracted from the corresponding pixel in the other.

  • Max: Pick the greater value from the current layer and the underlying layers.

When B is set to max, the greater value from each is selected.

  • Min: Pick the smaller value from the current layer and the underlying layers.

When B is set to min, the smallest value from each is selected.

  • Step: Wherever the current layer has a greater than the underlying layers, defaults to white (1). Wherever the current layer is smaller or equal value, defaults to black (0).

When B is set to step, the greater values remain and are set to white (1). As the overlap is greater in A, it is set to black (0).

  • Overlay: If the underlying value is less than the current, multiply is applied. Otherwise, each corresponding value is inverted, multiplied, then inverted again. Lighter values are made lighter, and darker areas are made darker.

When B is set to overlay, everything except the circle without the overlap in A is multiplied, as it is less than B. This results in blacking out the circle in B and a brighter overlap.

  • Distort: Distort the underlying layers based on current layer’s values. Only available on masks. The distortion is based on refraction.

When B, a noise mask, is set to distort, the values from A are distorted based on the values in B.

A demonstration of the distort blending mode.

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