The Mask info node provides the minimum and maximum values (between 0 and 1) of a mask.

To add an Mask info node, select Edit in the main menu or right-click in the Graph Editor and select Create Node  > Calculation  > Mask info.

The Mask info node has no parameters.

To know the minimum and maximum values of a mask, it must be calculated completely. The nodes downstream cannot be calculated until the upstream masks has been fully calculated, which can take time.

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