Hello, thank you for your suggestion, I'm agree with you and I'm currently working on this two improvements.
I made some test with HQnx but xBR should be more effective so I will implement this in the future.
(nearest / hq2x / hq4x)
Maybe I could make a custom algo to prevent these alone pixels on the edge too.
And I added simple shape available for next release. I will improve to add polygons in the future.
Viewing post in More Scaling Options and Vector Drawing!
Because I worked on HQnX implementation some times ago but I didn't finish because I wasn't convinced by the rendering and xBR gave me some trouble so I switched to another task. Now there is a need I'll finalize it.
And I was currently working on the shapes precisely when you asked for vector drawing so great coincidence.
Yes the community provides always great ideas, thank you !