Starts Pass.

Prototype declaration:

> `

>     KMSTATUS KMAPI
>     kmBeginPass(
>     		IN OUT  PKMVERTEXBUFFDESC   pVertexBuffDesc
>     );

> `

Description:

>     This function starts Pass.
>     Operation is not guaranteed if this function is not called at the start of the pass.

>     (Example)
>     	kmBeginScene();
>     	  kmBeginPass();
>     		...
>     		...
>     		...
>     	  kmEndPass();
>     	kmEndScene();

Parameters:

>     pVertexBuffDesc(input)
>             This parameter is a pointer to KMVERTEXBUFFDESC.

Return values:

> Value | Explanation
> KMSTATUS_SUCCESS | Success