Describes when a primitive will be rendered. Some primitives need to be rendered during or at a certain time. For example, translucent primitives need to be rendered after opaque primitives to allow proper blending...

Member	Value	Description
eStkGraphicsRenderPassOpaque	1	Render during the opaque rendering pass.
eStkGraphicsRenderPassTranslucent	2	Render during the translucent rendering pass.
eStkGraphicsRenderPassCentralBodyClipped	4	Render before the central body is rendered.
eStkGraphicsRenderPassOrderedCompositeCentralBodyClipped	8	Rendered in an ordered composite before all other primitives and before the central body is rendered.
eStkGraphicsRenderPassOrderedComposite	16	Rendered in an ordered composite before all primitives but after the central body is rendered.
eStkGraphicsRenderPassTerrain	32	Render after the terrain is rendered.