TEXCOORD_BINDING绑定

#define POSITION_BINDING 0

    #define TEXCOORD_BINDING 1

  TextAreaOverlayElement::CmdAlignment TextAreaOverlayElement::msCmdAlignment;
    //---------------------------------------------------------------------
    #define POS_TEX_BINDING 0
    #define COLOUR_BINDING 1
#define UNICODE_NEL 0x0085
#define UNICODE_CR 0x000D
#define UNICODE_LF 0x000A
#define UNICODE_SPACE 0x0020
#define UNICODE_ZERO 0x0030