[Beignet] cl_khr_gl_sharing stopped working

[Orm Finnendahl]

Hi,

 clinfo doesn't report the cl_khr_gl_share extension anymore for the
beignet driver on my machine and my program needing this doesn't work
anymore. Everything worked fine on this hardware a month ago. The
beignet driver seems to be the same (git-fc5f430c), so I suspect
kernel or something else as the culprit.

Can anybody shed a light on how this can hapen and where to start
investigating the problem? I'm on Arch and with rolling upgrades it is
very difficult to narrow down when and why it stopped working,
especially since I didn't use my program for something like a month
now.

Below is my current setup. Let me know if you need more
information. Any help is appreciated as I really need it to be
working!

--
Orm

[root at t480s-orm orm]# uname -a
Linux t480s-orm 5.3.6-arch1-1-ARCH #1 SMP PREEMPT Fri Oct 11 18:28:05 UTC 2019 x86_64 GNU/Linux

CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (KabyLake)

[orm at t480s-orm ~]$ clinfo | grep beignet
  Platform Version                                OpenCL 2.0 beignet 1.4 (git-fc5f430c)
  Device Version                                  OpenCL 2.0 beignet 1.4 (git-fc5f430c)
  Device OpenCL C Version                         OpenCL C 2.0 beignet 1.4 (git-fc5f430c)

Platform Extensions                             cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_3d_image_writes cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_spir cl_khr_icd cl_intel_accelerator cl_intel_subgroups cl_intel_subgroups_short cl_intel_required_subgroup_size cl_intel_media_block_io cl_intel_planar_yuv