shader計算圖像翻轉

fixed4 frag (v2f i) : SV_Target { //旋轉180 //i.uv = mul(i.uv, float2x2(-1, 0, 0, -1)) +float2(1, 1); //x,y翻轉 i.uv.xy = float2(i.uv.x, 1-i.uv.y); fixed4 col = tex2D(_MainTex, i.uv); // apply fog //UNITY

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