glGetActiveUniformName( GLuint ( program ) , GLuint ( uniformIndex ) , GLsizei ( bufSize ) , GLsizei *( length ) , GLchar *( uniformName ) )-> void
Specifies the program containing the active uniform index uniformIndex .
Specifies the index of the active uniform whose name to query.
Specifies the size of the buffer, in units of
GLchar, of the buffer whose address is specified in uniformName .
Specifies the address of a variable that will receive the number of characters that were or would have been written to the buffer addressed by uniformName .