float oldWidth = 750f;
 float oldHeight = 1334f;

 float newWidth = Screen.width;
 float newHeight = Screen.height;

 float oldAspect = oldWidth / oldHeight;
 float newAspect = newWidth / newHeight;

 //水平方向缩放
 float horizontalCompressionRatio = newAspect / oldAspect;
 //垂直方向缩放
 float verticalCompressionRatio = oldAspect / newAspect;

 //0.462 0.562
 FreezeEffecy.localScale =  new Vector3(horizontalCompressionRatio, verticalCompressionRatio, 1);

750x1334 分辨率下为全屏显示,那么如何在相机size不改变的情况下使精灵全屏显示呢?相机是正交相机!需要计算不同分辨率下的比例,通过原始的比例和当前比例就能获的精灵的x 和 y的缩放比例,达到不同分辨率下不改变相机的size 使精灵显示的效果一样了