[mythtv] Build environment for OpenGL ES 2.0 in Linux

Magnus X magnus_postbox at hotmail.com
Thu Dec 27 10:30:59 UTC 2012

Did you find a solution to this?

I am also trying to get this PowerVR SGX545 graphics engine working
in Mythtv 0.25.

Mplayer is working with VA-API but not Mythtv. The frontend just crashes.
Is it not possible to use VA-API to decode h264 in Mythtv with this chipset?

Do you need to enable OpenGL ES 2.0 in mythtv instead? And recompile qt?

> I'm trying the get a mythfrontend built and running on an Intel Atom
> D2500 board. The chip is a Cedarview with a PowerVR SGX545 graphics engine.
> The graphics engine only supports a very limited set of OpenGL functions
> but it does have full OpenGL ES 2.0 support. In addition, it has VA-API
> support for video decoding.
> Intel has recently released a driver for this chip:
> http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=21519
> I have followed the instructions for the Fedora 16 install found here:
> http://www.intel.com/support/motherboards/desktop/sb/CS-033648.htm
> as a PDF download. I choose Fedora because I am familiar with it and can
> rebuild the packages rather easily. The instructions worked and I am
> able use both the OpenGL ES 2.0 interface with glxgears and the VA-API
> acceleration with mplayer.
> I saw in the release notes for 0.25 that support for OpenGL ES 2.0 has
> been added starting about 18 months ago and a check on the TRAC site
> shows that a significant amount of work has been done. This started with
> changeset 287de3d43.
> What I would like to find out is what the build environment needs in
> order to build MythTV to use OpenGL ES 2.0 instead of a full blown
> OpenGL implementation.
> I know that I will need to rebuild Qt with OpenGL ES 2.0 support, but
> I'm not sure what extra steps that I need to take other than adding
> "-opengl es2" to the build and providing the headers.
> I'm not averse to switching environments, say to Ubuntu, and I've also
> found a thread for Arch Linux here:
> https://bbs.archlinux.org/viewtopic.php?pid=1145207

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