Hi Martin, I already planed to do it very soon if there is no other activity. Shouldn't be so hard to implement. Thank you for syncing with me. Best regards -Carsten
Von meinem Samsung Galaxy Smartphone gesendet. -------- Ursprüngliche Nachricht --------Von: Martin Peres <martin.pe...@free.fr> Datum: 04.10.18 09:42 (GMT+01:00) An: Michel Dänzer <mic...@daenzer.net>, Carsten Behling <carsten.behl...@googlemail.com> Cc: x...@freedesktop.org Betreff: Re: modesetting TearFree / VSYNC aware rotation pageflipping On 03/10/2018 17:36, Michel Dänzer wrote: > On 2018-10-03 4:22 p.m., Carsten Behling wrote: >> >>> TearFree uses separate dedicated scanout buffers, to which the "main" >>> buffer contents are copied on demand. >>> >>> Originally, these three things (DRI page flipping, rotation and >>> TearFree) were separate and mutually exclusive. However, the >>> amdgpu/radeon drivers support all of them the same time these days; this >>> still requires an extra copy in some cases, but that could be eliminated >>> at least in the non-rotated DRI page flipping case. >>> >>> https://gitlab.freedesktop.org/xorg/xserver/merge_requests/24 has the >>> start of TearFree support for the modesetting driver, but it's still >>> mutually exclusive with rotation (DRI3 page flipping should work with >>> TearFree, but may still exhibit tearing if the client/user disables >>> sync-to-vblank). >> >> Couldn't we extend modesetting in addition to Martin's TearFree patch the >> same way you did here for Radeon?: >> >> https://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=798c4fd16d339b1ad5fd729cc884be084c60e38b > > Yeah, something like that would be needed. > Carsten, Would you like to add support for it on top of my branch? I am a bit swamped but I could be convinced to help you on this if needed :) Martin
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