1.7 - 2D场景截图

反射示例关卡概述,示例1.7: 2D场景截图

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立方体场景截图 非常类似,Scene Capture 2D (2D场景截图) 在每帧 都创建场景图像。 实际上,2D场景截图Actor运行的原理与真正的反射不同; 它们更像从摄像机接受图像的电视机屏幕。 2D场景截图从其视锥捕获场景,将其存储为图像,随后将该图像在材质内使用。 实际上,虚幻编辑器内的Scene Capture 2D(2D场景截图)表现为一个摄像机。 因此,它们在游戏中最常被作为监控摄像机特效来使用。

尽管对于系统性能的消耗只有立方体场景截图的1/6,但是在使用2D场景截图时仍需注意,因为它们依然需要额外的处理。

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