But I could run it! There is a trick for this: first I stop xorg by running this command: service xserver-nodm stop
Than I run my tool ./modetest_x11 -s 9:XR24 -P 9:1280x720@XR24 After that I start xorg again service xserver-nodm start And it seems xserver start successful. And I have both xserver render to primary buffer and modetest render to Sprite Plane It is a bug in kernel ? On Fri, Jan 1, 2016 at 5:04 AM, Jasper St. Pierre <[email protected]> wrote: > You can't. The only client that is allowed to do modesets, either on > planes or on the primary buffer, is the DRM master, which in this case > is the Xorg server. It would be much easier and better to use Wayland > instead. > > On Thu, Dec 31, 2015 at 12:16 AM, Cao Duc Quan <[email protected]> > wrote: > > Thanks Jasper. > > I plan to hook to QT embedded to make it use sprite plane buffer. > > I could make a tool (customized from modetest.c of libdrm) to render to > > sprite plane which are running in xorg. > > > > Thanks and Happy New Year. > > cdq > > > > On Wed, Dec 30, 2015 at 2:52 AM, Jasper St. Pierre < > [email protected]> > > wrote: > >> > >> The only currently supported mechanism for using hardware overlays is > >> video planes through VDPAU / VA-API. > >> > >> Xorg does not have any other supported mechanism for using hardware > >> overlays. Try looking at Wayland, which can have support for hardware > >> planes. > >> > >> On Fri, Dec 25, 2015 at 8:29 AM, Cao Duc Quan <[email protected]> > >> wrote: > >> > Dear all, > >> > I am studying the Graphics stack in linux. > >> > I found that the Intel Baytrail E38xx support 2 pipe display and each > >> > pipe > >> > has > >> > - 1 x primary plane > >> > - 2 x sprite plane > >> > - 1 x cursor plane > >> > > >> > Is it possible to use sprite plane as overlay plane which means we can > >> > render UI to sprite plane (for example QT could render Widget to > sprite > >> > plane) ? If so, could any one point me to some a sample code or any > >> > documents ? > >> > > >> > Many Thanks, > >> > -- > >> > Quan Cao > >> > 0976574864 > >> > > >> > _______________________________________________ > >> > [email protected]: X.Org development > >> > Archives: http://lists.x.org/archives/xorg-devel > >> > Info: http://lists.x.org/mailman/listinfo/xorg-devel > >> > >> > >> > >> -- > >> Jasper > > > > > > > > > > -- > > Quan Cao > > 0976574864 > > > > -- > Jasper > -- Quan Cao 0976574864
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