OpenGL Settings

Through Preferences from the Edit menu, go to the Open GLpage to set OpenGL application options, which provide support for advanced 3D viewing options.

System independent options

Option	Description
Support Scene Anti-aliasing	Select this check box to have STK smooth jagged edges, creating clean images for use in large-format and high-quality presentations. This is done at the hardware level. You must select the Support Scene Anti-aliasing check box before you create a 3D window. This function is independent of and unrelated to the Anti-Aliasing options on the 3D Graphics / Record Movie properties page.
Support Stereo Viewing	This option only affects advanced graphics cards, such as Quadro. Selecting this check box allows for OpenGL Stereo Viewing on cards that support it. You must select the Support Stereo Viewing check box before you create your 3D window. When selected, OpenGL Stereo will appear on the 3D Graphics Advanced properties page under Stereo Display Options / Type shortcut menu.
Force MDL models on scenario load	Select this check box to substitute GLTF and COLLADA models with a default MDL model (.mdl) when creating or loading an object. You should only need this option with graphics cards that support early versions of OpenGL.
Number of Stencil Bits	For STK to render terrain, it requires an OpenGL stencil buffer. If the number of bits is nonzero, STK will attempt to allocate a stencil buffer with the specified bit depth. The default value is 8.

These application-level options are for advanced users. You must enable Scene Anti-aliasing and Stereo Viewing support at the application level before you create the 3D window. Some support options may also require you to make additional settings in the properties of your 3D window.