注意！ 这个版本的文档是过时的，因为它描述了一个较老的SDK版本！请切换到最新SDK版本的文档。
DDXY Node
Description
This node outputs the sum of both partial derivatives of the specified input value with respect to the screen space x-coordinate and screen-space y-coordinate respectively. This node can only be used in the pixel shader stage.
Notice
For more information on how the derivatives are calculated please follow this link.
The information on this page is valid for UNIGINE 2.18.1 SDK.
Last update:
2024-04-19
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