vertexbuffer.py 文件源码

def __init__(self, size, target, usage):
        super(MappableVertexBufferObject, self).__init__(size, target, usage)
        self.data = (ctypes.c_byte * size)()
        self.data_ptr = ctypes.cast(self.data, ctypes.c_void_p).value
        self._dirty_min = sys.maxsize
        self._dirty_max = 0