Python Kivy: AntiAliasing for Canvas -

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when i'm creating widget, , draw circle on canvas, circle hasn't got smooth outline. fix that, thought effectwidget me, once did imagewidget on it. enabling fxaaeffect on after drawing circle on canvas didn't change anything. there way, directly enable antialiasing python kivy's canvas? (even images)

the effectwidget effects work on child widgets, not own canvas (due technical limitations how works difficult resolve).

add single child widget , try drawing circle on instaed.

with kivy can enable in-hardware multisampling anti-aliasing, don't remember how, , think it's enabled (at least @ low level) if possible.

edit: following:

<youreffectwidget>:     widget:         canvas:             color:                 rgba: 1, 1, 0, 1             ellipse:                 pos: 100, 100                 size: 50, 50

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