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Eevee uses a process called Temporal Anti-Aliasing (TAA) which reduces Aliasing. TAA is sample based so the more samples the more aliasing is reduced at the cost of performance.
参考
渲染 ‣ 采样
在3D视图中使用的样本数。当设置样本数为零时,3D视图中将会不断采样。
在最终渲染中使用的样本数。
移动视图或者播放动画期间降低噪点。