sharpnessStops=(1.0-sharpness)*2.5\\ 接下来根据sharpnessStops计算sharpnessLinear,满足下式。并且将sharpnessLinear降低为half精度(16bits),再将其左移16位,与原本的sharpnessLinear一起pack到一个float值内。相当于用一个float值存了2个half的sharpnessLinear。最后将32位float下的sharpnessLinear和packedSharpnessAsFloa...