Question about rendering and when objects can be updated

[sejoand]

I have a fairly complex graphics screen and I want to change a part of it. I created a GeometryGroup which I draw
in render. Later I modify the geometry group (I replace one geometry) and I expected to see the updated data. It
did not get updated on the screen until I forced a full render,

This may be fully intentional but is there any rules (and/or) documentation on what properties can be changed
after a draw (brushes works fine)?

[maxkatz6]

See #11378 and #8767.
Inner geometry changes do not automatically invalidate render due to fundamental restrictions of the previous renderer Avalonia used before.
Currently, we have plans to improve this situation, and similar problem was resolved for brushes/pens already.

Workarounds are either manual invalidation (i.e. visual.InvalidateVisual()), or replacing whole image/group source with all geometries would also retrigger the draw.

[sejoand]

Thanks. Is there a backlog of sorts available? I can work around this issue but when running into other issues it would be nice to know what to expect. /johan From: Maxwell Katz ***@***.***> Sent: Saturday, 12 April 2025 01:05 To: AvaloniaUI/Avalonia ***@***.***> Cc: Johan Andersson ***@***.***>; Author ***@***.***> Subject: Re: [AvaloniaUI/Avalonia] Question about rendering and when objects can be updated (Discussion #18627) See #11378<#11378> and #8767<#8767>. Inner geometry changes do not automatically invalidate render due to fundamental restrictions of the previous renderer Avalonia used before. Currently, we have plans to improve this situation, and similar problem was resolved for brushes/pens already. Workarounds are either manual invalidation (i.e. visual.InvalidateVisual()), or replacing whole image/group source with all geometries would also retrigger the draw. — Reply to this email directly, view it on GitHub<#18627 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/A2RT64QCRVTQ4OX2P6HBDET2ZBC75AVCNFSM6AAAAAB26E7FTOVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTEOBQHEZDEOI>. You are receiving this because you authored the thread.Message ID: ***@***.******@***.***>>