Invert

Overview

A single-purpose node that produces a photographic negative. In production it appears more often as an intermediate step that reverses the black and white of a mask or height map than as an effect on finished artwork. It can also create effect flashes such as a damage blink.

Usage tips

• Mask inversion is the most common use: swap selected and unselected areas after threshold or path_mask.
• Invert a height map to turn a raised area into a recess. height_from_image has its own invert option; use this node for any other height map.
• For a damage flash, alternate between the normal and inverted images with a switch or by switching blend opacity.

Common pitfalls

• Transparent areas are not inverted: this is intentional; the A channel is unchanged. Use channel operations such as channel_split / channel_merge to invert transparency.
• Only the hue should rotate: a negative also reverses luminance. To invert only hue, use hue +180 in hsv_adjust.

Technical details

Each pixel's R/G/B channels are transformed to 1.0 - value. The A channel is unchanged.

Related nodes

• threshold — creates masks commonly paired with inversion and has its own invert option
• hsv_adjust — invert hue while preserving luminance
• channel_split / channel_merge — channel operations including alpha