MTLVertexFormat.char4 A four-component vector with 8-bit, signed integer values. Declarationcase char4 See Also8-bit integer formatsMTLVertexFormat.charMTLVertexFormat.char2MTLVertexFormat.char3MTLVertexFormat.ucharMTLVertexFormat.uchar2MTLVertexFormat.uchar3MTLVertexFormat.uchar4