[Libva] vaCreateSurfaceGLX on psb fails (due lack of GLX_EXT_texture_from_pixmap)

[Bian, Jonathan]

Hi Adam,

You would need either TFP extension or vaCreateSurfaceGLX/vaCopySurfaceGLX supported in the PSB driver in order to get the decoded video into the OpenGL pipeline.  Before this happens, the only way of doing blended UI is through subpictures. Gwenole had some comments on the various ways of doing UI recently: http://lists.freedesktop.org/archives/libva/2010-January/000140.html
   
Regards,
Jonathan

-----Original Message-----
From: libva-bounces at lists.freedesktop.org [mailto:libva-bounces at lists.freedesktop.org] On Behalf Of Adam Strzelecki
Sent: Thursday, February 11, 2010 6:51 AM
To: libva at lists.freedesktop.org
Subject: [Libva] vaCreateSurfaceGLX on psb fails (due lack of GLX_EXT_texture_from_pixmap)

Hi,

I am developing some OpenGL video surveillance app. Since it was decided we will be using GMA 500 & Linux for some of monitoring stations I started implementing HW accel based on VA API.
Unfortunately it seems PSB does NOT support vaCreateSurfaceGLX which always fails.
I debugged it a bit and it seems that check_tfp_extensions fails due missing GLX_EXT_texture_from_pixmap.

So now I got serious problem, since cannot get valid GL texture out of VA Surface I cannot render it into backbuffer as rest of UI using regular OpenGL pipeline.
Only thing that works with PSB is regular vaPutSurface, but it always renders to FRONT BUFFER, while rest of UI based on OpenGL renders to BACK BUFFER, then page flip ruins everything.
I cannot have both vaPutSurface & OpenGL without flickering.

As stated in other threads here vaGetImage and vaDeriveImage also DOESN'T work for PSB. So anyone can tell me how I can render VA Surface together with other things out of OpenGL altogether using PSB?

Is there any trick that can enable me to do that? Maybe it could be possible to make vaPutSurface render to BACK BUFFER? This would make things easier... even all GLX based extensions vaCreateSurfaceGLX and vaAssociateSurfaceGLX would not be necessary.

Would be great if vaPutSurface had a flag telling it to render to Drawable backbuffer if present, so we can use just vaPutSurface without additional hassle of mapping into GL textures.

Best regards,
-- 
Adam | nanoant.com
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