Enum Tools.PV()->AlphaMode Description The alpha combination modes. Use set_alpha_mode() to change the mode. Constant AlphaOnly constant Tools.PV.AlphaOnly Description Only show the alpha channel (if any). Constant None constant Tools.PV.None Description Ignore alpha. Constant Solid constant Tools.PV.Solid Description Solid color. Constant Squares constant Tools.PV.Squares Description Checkerboard pattern (default).