GL_ARB_buffer_storage
http://www.opengl.org/registry/specs/ARB/buffer_storage.txt
GL_ARB_buffer_storage
	GL_MAP_READ_BIT 0x0001
	GL_MAP_WRITE_BIT 0x0002
	GL_MAP_PERSISTENT_BIT 0x00000040
	GL_MAP_COHERENT_BIT 0x00000080
	GL_DYNAMIC_STORAGE_BIT 0x0100
	GL_CLIENT_STORAGE_BIT 0x0200
	GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT 0x00004000
	GL_BUFFER_IMMUTABLE_STORAGE 0x821F
	GL_BUFFER_STORAGE_FLAGS 0x8220
	void glBufferStorage (GLenum target, GLsizeiptr size, const void *data, GLbitfield flags)
	void glNamedBufferStorageEXT (GLuint buffer, GLsizeiptr size, const void *data, GLbitfield flags)
