fd31da45e2
We initially assumed that copy_sub_buffer is synchronized on which is only the case for a subset of GPUs for example it is not synchronized on INTEL gen6 and gen7, so we remove this assumption for now. We should have a specific driver / GPU whitelist if we want to enable this. https://bugzilla.gnome.org/show_bug.cgi?id=669122 Reviewed-by: Robert Bragg <robert@linux.intel.com> Reviewed-by: Neil Roberts <neil@linux.intel.com>