Hi Stefan, On 25 June 2018 at 18:09, Stefan Schake <[email protected]> wrote:
> Hey Chris, > > On Fri, Jun 22, 2018 at 12:09 PM, chris simmonds <[email protected]> > wrote: > > Hi. > > > > I would like to try out drm_hwcomposer on a RPi 3. Can anyone point me > to a > > howto or something that tells me how? > > > > FYI, this is part of a side project to port drm_hwcomposer to BeagleBones > > and other things based on TI SoCs > > > > Thanks, > > Chris Simmonds > > So Mesa is really only transitively related to drm_hwc, in that you need > a graphics driver with Android native fence support. For Mesa and the VC4 > GPU on the RPi specifically, that's supported in a very recent Mesa version > in combination with a very recent kernel that has the VC4 syncobj support. > The earliest kernel version that has this is 4.18-rc1, but it can be > backported relatively painlessly to 4.14, which is what the android-kernel > tree uses and works on Oreo upwards. No released Mesa version has the > support yet, but master can be made to work with AOSP. > > As you can tell, there is no howto or anything - this is all pretty > bleeding edge and you'll need to do some indepth sleuthing to get it > to work. If you hit any specific problems, the best point to get help > is the drm-hwcomposer project on the freedesktop gitlab: > > https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer > > Thanks, > Stefan > Thank you for clarifying things. It looks like there is a bit of work to do here, but there's the whole summer ahead. Cheers, Chris
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