vertex_format_add_colour();
N/A(无返回值)
Tell GameMaker Studio 2 to accept colour data as part of the new vertex format being created.
vertex_format_begin();
vertex_format_add_colour();
vertex_format_add_position();
my_format = vertex_format_end();
The above code will create a new vertex format with just colour and position values and then store the format id in the variable "my_format".