function mapPremultipliedBlendModes() {
    var pm = [];
    var npm = [];
    for (var i = 0; i < 32; i++) {
        pm[i] = i;
        npm[i] = i;
    }
    pm[BLEND_MODES.NORMAL_NPM] = BLEND_MODES.NORMAL;
    pm[BLEND_MODES.ADD_NPM] = BLEND_MODES.ADD;
    pm[BLEND_MODES.SCREEN_NPM] = BLEND_MODES.SCREEN;
    npm[BLEND_MODES.NORMAL] = BLEND_MODES.NORMAL_NPM;
    npm[BLEND_MODES.ADD] = BLEND_MODES.ADD_NPM;
    npm[BLEND_MODES.SCREEN] = BLEND_MODES.SCREEN_NPM;
    var array = [];
    array.push(npm);
    array.push(pm);
    return array;
}
Corrects PixiJS blend, takes premultiplied alpha into account
@memberof PIXI.utils
@function mapPremultipliedBlendModes
@private
@returns {Array<number[]>} Mapped modes.