Re: [PATCH v9 00/23] drm/rockchip: RK356x VOP2 support

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On Wed, Apr 06, 2022 at 11:47:22AM +0200, Piotr Oniszczuk wrote:
> 
> 
> > Wiadomość napisana przez Piotr Oniszczuk <piotr.oniszczuk@xxxxxxxxx> w dniu 01.04.2022, o godz. 15:05:
> > Sascha
> > 
> > Now works perfectly!
> > (hd playback with 3.5...5.5% cpu while rendering to drm plane)
> > 
> > Fantastic work of You!
> 
> Sascha,
> 
> Having vop2 finally working with drm planes rendering i discovered another issue: overlay osd is invisible at playback. 
> 
> context: player draws video on plane #X and osd on overlay plane #Y
> When user do i.e. seek at playback - app uses overlay OSD plane to display OSD to user. This approach is used by majority of players (KODI, etc.)
> 
> This works well on all platforms i have  - except rk3566 
> 
> For me it looks like z-order vop2 issue or alpha blending issue.
> As this is only on rk3566 and only on drm-planes mode - issue is vop2 related imho.

That turned out to be simpler than I thought it would be. The zpos
values were never actually written to the hardware. Please try the
following fixup, it should fix this issue.

Thanks for your valuable testing feedback so far :)

Sascha

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