[vlc-devel] [PATCH 2/4] vgl: expose opengl callbacks through libvlc

[Rémi Denis-Courmont]

Le keskiviikkona 4. heinäkuuta 2018, 17.46.16 EEST Pierre Lamot a écrit :
> Concerning the create(size)/destroy callbacks, we can get the informations
> from the resize callback in opengl module. The main advantage is that it
> rely on existing mechanism and doesn't interfere with vout_helper. Though I
> see some drawbacks:
>   - resize callback isn't call with opengl context. though, we can still
> enforce that.
> - we won't get notified when the resources aren't needed
> anymore.
> - resize is called several times, without actual size changes.
> 
> For actual resize, as far as I understand, the opengl module is closed and
> reopen on format change, so the case seems handled in the V1 of my patches.

I don't think you can rely on that. Track change will change the vout, sure. 
But e.g. source crop or source A/R change will not.

And then, the dummy window provider will trigger unintended size requests.
You need a new window type if you don't want that.

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