int32 SetProgramConstantUint64Vector( int32 p_nHandle, int32 p_nIndex, Uint64Vector p_oData, int32 p_nDimension )

Parameter Type	Parameter Name	Documentation
int32	p_nHandle	The handle to the shader program. This can be acquired by calling the <Program> object's GetHandle() data interface.
int32	p_nIndex	The index of the shader constant to set.
<Uint64Vector>	p_oData	A pointer to the source <Uint32Vector> object.
int32	p_nDimension	The value 2, 3, or 4 depending on the dimensions of the constant. For example, a <Uint64Vector> object always has four components, but using 2 here allows you to set a u64vec2 shader constant. (if your GPU supports 64-bit via https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_gpu_shader_int64.txt or similar.).