[Bug 108894] [anv] vkCmdCopyBuffer() and vkCmdCopyQueryPoolResults() write-after-write hazard

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Nov 29 14:56:17 UTC 2018


--- Comment #9 from Jason Ekstrand <jason at jlekstrand.net> ---
> A call to genX(cmd_buffer_apply_pipe_flushes) seems to fix it for me.

I think we need to do a bit more than just that because MI writes aren't
pipelined.  Probably something like:

/* Because MI writes aren't pipelined, we need a CS stall */
if (flushes & ANV_PIPE_FLUSH_BITS)
   flushes |= ANV_PIPE_CS_STALL_BIT;

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