preview / mask bug

[wirz]

Hi,

I'm observing a bug where for some specific masks an image is drawn
incorrectly in the preview (fast + normal), but is drawn correctly in
the actual output (see screenshot + pto).

In the screenshot one can see that the horizontal (y) coordinate of the
leftmost point ( = first point in the mask def) in the mask is ignored
and the outline is drawn vertically down. This happens only when the
point is outside the image, but not too far outside (for this specific
pto it's -5 <= x <= -1, but I have seen different thresholds for other
masks).

I'm not familiar with the preview code, but I may look at it some time.

best regards, lukas wirz

[T. Modes]

Hi Lukas,

lukas wirz schrieb am Sonntag, 24. Mai 2026 um 13:44:36 UTC+2:

Hi,

I'm observing a bug where for some specific masks an image is drawn
incorrectly in the preview (fast + normal), but is drawn correctly in
the actual output (see screenshot + pto).

It should be fixed in default branch.

Thomas

[wirz]

Thanks, Thomas! That works on my side.

cheers, lukas wirz


On 25/05/2026 11:25, 'T. Modes' via hugin and other free panoramic