Rendering methods available for use by the marker batch primitive. Different methods may have different performance characteristics and require different video card support. When in doubt, use Automatic.

Member	Value	Description
eStkGraphicsMarkerBatchRenderingMethodGeometryShader	0	Render the marker batch using a geometry shader. Requires OpenGL 3.0 or 2.0 with the ARB_geometry_shader4 extension.
eStkGraphicsMarkerBatchRenderingMethodVertexShader	1	Render the marker batch using a vertex shader. Requires OpenGL 2.0 or 1.5 with the following extensions: GL_ARB_vertex_shader GL_ARB_fragment_shader
eStkGraphicsMarkerBatchRenderingMethodAutomatic	2	Render the marker batch using an automatically selected method based on the capabilities of the video card.
eStkGraphicsMarkerBatchRenderingMethodFixedFunction	3	Render the marker batch using the fixed function pipeline. Generally, this is the slowest method but it supports all video cards.

Marker Batch Primitive Overview  | IAgStkGraphicsMarkerBatchPrimitive