File extension is used by LucasArts The Secret of Monkey Island: Special Edition game for Xbox and PC Windows platform. Shader file.
Effects file created for Direct3D, a part of Microsoft DirectX used to render three-dimensional graphics; contains plain text effects properties structured into three sections: variables, functions, and techniques. FX files are used to specify textures, lighting parameters, shading, rendering properties, and other effects. Direct3D technology is only used for Windows programs.
The FX file extension is associated with the Microsoft Windows.