[Beignet] darktable support

[Vasily Khoruzhick]

Hi,

I'm trying to use beignet with darktable, but darktable complains like that:

[opencl_init] discarding device 0 `Intel(R) HD Graphics IvyBridge GT1'
due to insufficient global memory (128MB).

AFAIK it requires at least 768MB.

I tried to rise max_mem_alloc_size and global_mem_size from
cl_gt_device.h to 768mb, but it won't help much, with beignet-0.8 it
fails to spill registers, and with git master darktable just crashes
(I didn't check why, I'm not familiar neither with darktable source
code nor beignet source code).

Are there any reason to keep memory limits at so low rate?

Are beignet devs interested in making darktable work with beignet?

Thanks!

Regards
Vasily