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JeOam/Shader.md

Created September 23, 2018 04:46
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Unity Shader Notes
@JeOam
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JeOam commented Nov 27, 2018

图片变灰：由于视觉感光对 R,G, B 的敏感度不一样，所以取不同的权重。

float4 grayScale(float4 v) {
    float g = v.r * 0.299 + v.g * 0.578 + v.b * 0.114;
    return float4(g, g, g, v.a);
}

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JeOam commented Nov 27, 2018 

if (w < 0) w = 0;
if (w > 1) w = 1;
// 等于
w = clamp(w, 0, 1);

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