[Libva] [PATCH 0/2] intel-driver: add support for vaPutImage()

[Gwenole Beauchesne]

Hi,

2011/9/6 Xiang, Haihao <haihao.xiang at intel.com>:

> There is an implementation of vaPutImage on vaapi-ext branch, the
> implementation directly uses some internal post processing functions, it
> supports pixel format conversion between NV12, YV12 and I420. Currently
> it doesn't work on CTG due to lack of GPU kernels on CTG. Could you try
> this implementation?

Well, my CTG platform is not very stable so it's not suitable for
performance evaluation. Do you think the GPU kernels need to be
written for CTG specifically? Actually, I could build them on Gen4 but
my CTG support code is surely broken since the outcome is a GPU hang.
:)

> I also have implemented vaGetImage with this way. Testing with VLC-vaapi
> shows that the performance on Sandybridge is good (It has the same CPU
> usage with mplayer-vaapi when playing a 1080p video) however the
> performance on Ironlake is bad. So I don't push the implementation of
> vaGetImage currently.

Can we make a mix as an interim solution? e.g.
- SNB+ shaders for vaGetImage()
- ILK+ shaders for vaPutImage()

Thanks,
Gwenole.