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This node is used to blend (linear interpolation) between two input values or colors A and B depending on the Coefficient.
- if Coefficient = 0 the node outputs A value
- if Coefficient = 0.5 the node outputs a halfway blend between between A and B
- if Coefficient = 1 the node outputs B value
- for all other Coefficient values the node outputs a linear blend of A and B
Gradient mask controlling interpolation (along U-axis) between two given textures, with Slider1 controlling the position of the transition and Slider2 controlling transition softness. Outputs of two Sample Texture nodes are connected to the Lerp node that performs linear interpolation between texture values with an interpolation coefficient. To get this coefficient we take U coordinate from the Vertex UV 0 node and subtract it from the current Slider1 value using the Subtract node, the result is then passed to the Divide node to be divided by the value of Slider2, then the result is summed up with Slider1 value and passed to the Clamp node to be restricted to the [0;1] range. The result or linear interpolation provides Albedo values for the Material.