Godot Sprite2D Edge Bleed: Test Region Filter Clipping

A clean blue HUD tile acquires a red seam after you place it in Godot. Before rebuilding the atlas, compare two nodes that differ in one setting. This check is for a Godot 4.3 Sprite2D using Region; other nodes can have their own sampling controls.

Make a fixture with an unmistakable neighbor

Put a solid blue 32 by 32 tile directly beside a red tile of the same size. Import the PNG without mipmaps or lossy compression for the first pass. Use the Tooliva sprite sheet packer for production packing, but check the test image in a pixel editor: an automatically inserted gutter can hide the symptom you are trying to reproduce.

Compare one edge under the same transform

1. Assign the texture to two Sprite2D nodes. Enable Region on both and enter a rectangle at (0, 0), 32 pixels wide and 32 pixels tall. Set each node to Linear filtering.
2. Scale both to 1.5 and keep their fractional pixel offsets identical. Turn Region Filter Clip Enabled off on the first node and on for the second.
3. Inspect the right edge. If only the unclipped sprite picks up red, sampling beyond the region fits the evidence. Repeat at a different fractional offset, then try Nearest as a separate comparison.

Use the second sprite to decide what to fix

Red in both copies calls for a rectangle and source-pixel check first. A one-pixel selection error can include an actual column of the neighboring tile. If only the downscaled scene shows the seam, repeat with the project's real mipmap and packing settings: clipping this node's region does not replace testing how the atlas behaves at smaller sizes.

Save the region coordinates, filter mode and a preview from the smallest intended display scale. For pixel art, compare Nearest on its own. For a project that needs smooth filtering, verify the clip setting and atlas spacing as separate decisions.