sourab.gupta@xxxxxxxxx writes: > From: Sourab Gupta <sourab.gupta@xxxxxxxxx> > > This patch is in continuation of and is dependent on earlier patch > series to 'reduce the time for which device mutex is kept locked'. > (http://lists.freedesktop.org/archives/intel-gfx/2014-May/044596.html) One of userspace's assumptions is that when you allocate a new BO, you can map it and start writing data into it without needing to wait on the GPU. I expect this patch to mostly hurt performance on apps (and I note that the patch doesn't come with any actual performance data) that get more stalls as a result. More importantly, though, it breaks existing userspace that relies on buffers being idle on allocation, for the unsychronized maps used in intel_bufferobj_subdata() and intel_bufferobj_map_range(GL_INVALIDATE_BUFFER_BIT | GL_UNSYNCHRONIZED_BIT)
Attachment:
pgpUfc1MdJK7F.pgp
Description: PGP signature
_______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
