3D LUT testing files missing

[zhaoxiaofengshine]

I want to enable the sample program videoprocess/vpp3dlut , but from the configuration file, it appears that the test materials are missing. The. cube resources generated from the PhotoShop will cause coredump

[FurongZhang]

I think that is caused by the 3DLUT format you pass to VAAPI.

Please read the API definition: https://github.com/intel/libva/blob/master/va/va_vpp.h#L1381