[mythtv-users] intel and opengl playback

[Anthony Arobone]

On Fri, Dec 26, 2008 at 2:21 PM, Anthony Arobone <aaroboneml at gmail.com>wrote:

> Hi,
>
> I'm having a problem getting Myth to use the opengl profile for playback.
> It keeps falling back to xv playback.  I'm running Gentoo (2.6.28) on Intel
> X4500HD (G45) video.  Running the newest test driver,
> xf86-video-intel-2.5.99.1 from x11 overlay, xorg-server-1.5.3.  and lastest
> mesa master, mesa-9999.
>
> I'm seeing massive horizontal tearing when playing back 1080 content (even
> with VSync checked).  When I test with mplayer using -vo xv I get the same
> tearing.  But, when I use mplayer -vo gl  OR mplayer -vo gl2 there is
> absolutely no tearing.  glxinfo reports direct rendering: Yes, and glxgears
> works fine.  But when I setup a playback profile in myth frontend to use
> opengl it fails to initialize it and falls back to XV.
>
> VideoOutputXv: Desired video renderer 'opengl' not available.
>>                         codec 'MPEG2' makes 'xv-blit,xshm,xlib,'
>> available, using 'xv-blit' instead.
>>
>
>
> I have opengl compiled into mythtv:
> [ebuild   R   ] media-tv/mythtv-0.21_p18314-r1  USE="aac alsa dvb dvd fftw
> lirc mmx opengl perl python xvmc (-altivec) -autostart -debug -directv
> -ieee1394 -jack -lcd" VIDEO_CARDS="-nvidia" 0 kB
>
> I'm even using the opengl renderer for the QT painter, and that's workig
> great.  Blends nicely from menu to menu.
>
> Any idea why this is happening?
>
>
Well, turns out that I don't have any Overlay adaptor even though I am
specifying XvPreferOverlay to true in my xorg.conf.  Why is that?  How do I
get Overlay enabled.

$ DISPLAY=":0" xvinfo
> X-Video Extension version 2.2
> screen #0
>   Adaptor #0: "Intel(R) Textured Video"
>     number of ports: 16
>     port base: 72
>     operations supported: PutImage
>     supported visuals:
>       depth 24, visualID 0x21
>     number of attributes: 2
>       "XV_BRIGHTNESS" (range -128 to 127)
>               client settable attribute
>               client gettable attribute (current value is 0)
>       "XV_CONTRAST" (range 0 to 255)
>               client settable attribute
>               client gettable attribute (current value is 0)
>     maximum XvImage size: 1920 x 1088
>     Number of image formats: 5
>       id: 0x32595559 (YUY2)
>         guid: 59555932-0000-0010-8000-00aa00389b71
>         bits per pixel: 16
>         number of planes: 1
>         type: YUV (packed)
>       id: 0x32315659 (YV12)
>         guid: 59563132-0000-0010-8000-00aa00389b71
>         bits per pixel: 12
>         number of planes: 3
>         type: YUV (planar)
>       id: 0x30323449 (I420)
>         guid: 49343230-0000-0010-8000-00aa00389b71
>         bits per pixel: 12
>         number of planes: 3
>         type: YUV (planar)
>       id: 0x59565955 (UYVY)
>         guid: 55595659-0000-0010-8000-00aa00389b71
>         bits per pixel: 16
>         number of planes: 1
>         type: YUV (packed)
>       id: 0x434d5658 (XVMC)
>         guid: 58564d43-0000-0010-8000-00aa00389b71
>         bits per pixel: 12
>         number of planes: 3
>         type: YUV (planar)
>

xorg.conf Device section:

Section "Device"
>     Identifier  "G45"
>     Driver      "intel"
>
>     Option      "Monitor-HDMI-1"        "PRO111FD"
>
>     Option      "ModeDebug"     "true"
>     Option      "XvMC"          "true"
>     Option      "DRI"           "true"
>     Option      "XvPreferOverlay" "true"
>     Option      "DDC"           "true"
> EndSection
>
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