Renders graphic primitives described by the index buffer from DXBufferSet().
[in] Handle for a graphic context created in DXContextCreate().
[in] Index of the first primitive for rendering.
[in] Number of primitives for rendering.
The type of primitives described by the index buffer is set using DXPrimiveTopologySet().
The vertex buffer in DXBufferSet() should be preliminarily set to render primitives.
Also, shaders should be preliminarily set using DXShaderSet().