- fixed4 frag(v2f_img i) : SV_Target
- {
- //计算uv到中间点的向量(向外扩，反过来就是向里缩)
- float2 dv = float2(0.5, 0.5) - i.uv;
- //归一化
- float2 dv1 = normalize(dv);
- //计算每个像素uv的偏移值
- float2 offset = dv1 * _distanceFactor;
- //像素采样时偏移offset
- float2 uv = offset + i.uv;
- return tex2D(_MainTex, uv);
- }
shader向外扩
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转载自blog.csdn.net/sgnyyy/article/details/79370784
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