You can set the following preferences in the GLSL Shader category of the Preferences window.
To return to the default factory settings, choose in this window. Note that this resets the preferences in every category in the Preferences window.
Default effects file
Select the default effects file that is automatically loaded when you create a GLSL Shader.
Note: To create a GLSL Shader, you must run Viewport 2.0 in core profile mode. See
Run Viewport 2.0 in Core Profile mode.