求助，有没有让图片看起来是蒙灰的shader材质

Creator 2.x
#1

求分享~~~

#2

builtin-2d-gray-sprite 里有个这个：
float gray = 0.2126color.r + 0.7152color.g + 0.0722*color.b;

#3

graySprite(gray: boolean, sp: cc.Sprite) {

let material = null;

if (gray) material = cc.Material.getBuiltinMaterial('2d-gray-sprite');

else material = cc.Material.getBuiltinMaterial('2d-sprite');

material = cc.MaterialVariant.create(material, sp);

sp.setMaterial(0, material);

}

#4

这个是置灰…有没有蒙灰的效果…
image
类似这种

#5

…好像修改图片的颜色就能实现…