Screen tearing

[tom-seddon]

b2 produces output at the PC refresh rate. In theory, you get good responsiveness, but at the possible cost of some visible screen tearing. The results have always been a mixed bag: the responsiveness is pretty good (though not perfect...), but the tearing is actually quite noticeable.

Can b2 do better? It's probably never going to be perfect, with 50 Hz BBC output and 60 Hz PC output. But any tradeoffs should at least be more configurable.

[cardboardguru76]

More info:
Running the horizontal scrolling demo from here, on macOS, the tearing is pretty bad. Doesn't make any difference whether --vsync or --timer.
http://www.retrosoftware.co.uk/wiki/index.php?title=How_to_do_the_smooth_vertical_scrolling

Running the same image on BeebEm has no tearing. It's not perfectly smooth, but no tearing.