Flood Fill

Utilities

Flood-fills connected regions with selectable 4-way or 8-way tile-aware connectivity. Packed RGBA32F output: R/G carry frac(bbox_min) and bbox_size (16 bits each per axis); B carries a quadtree-derived per-island hash; A reserved. Background = (0,0,0,0). Downstream flood-fill nodes decode these via asuint. See shader for details.

Select a node to adjust its parameters. Double-click a node to inspect.

Inputs

input

Parameters

Parameter	Type	Default	Range	Description
`threshold` Threshold	float	0.5	0 to 1	Input threshold for region detection.
`connectivity` Connectivity	enum	four_way		Whether diagonal foreground pixels belong to the same region. `four_way` : Connect foreground pixels only across shared edges. `eight_way` : Connect foreground pixels across shared edges and diagonal corners.

Outputs

output (default format: rgba32float)