BlendMode Formulas
Equations used when blending drawn content with the screen or active Canvas.
Color components are generally in the range of [0, 1] rather than [0, 255] for the purposes of these equations. Results are clamped to [0, 1] except when a Canvas is active that has a floating-point / HDR format.
Description:
dst - existing color in the screen.
src - the color of the drawn object (the color output by the pixel shader, or the global color multiplied by the texture's color – if a