Extracted from Pike v8.0 release 164 as of 2016-02-09.
   

Enum Tools.PV()->AlphaMode

  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).