get_uniform_location

Retrieve the location (offset) of a uniform variable in a shader program, a uniform is a variable that is constant for all vertices/fragments for a shader object and is possible to modify as an external parameter.

Parameters:

uniform_name	the name of a uniform.
handle	a VertexBufferIndices for a shader program.

Returns:

the offset of a uniform in a specified program. This uniform can be set using uniform_1f when the program is in use.