gallium: add global buffer memory barrier bit

Currently radeonsi synchronizes after every dispatch and Clover
does nothing to synchronize. This is overzealous, especially with
GL compute, so add a barrier for global buffers.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/clover/core/kernel.cpp b/src/gallium/state_trackers/clover/core/kernel.cpp
index bce3b52..266d50e 100644
--- a/src/gallium/state_trackers/clover/core/kernel.cpp
+++ b/src/gallium/state_trackers/clover/core/kernel.cpp
@@ -89,6 +89,8 @@ kernel::launch(command_queue &q,
                              exec.sviews.size(), NULL);
    q.pipe->bind_sampler_states(q.pipe, PIPE_SHADER_COMPUTE, 0,
                                exec.samplers.size(), NULL);
+
+   q.pipe->memory_barrier(q.pipe, PIPE_BARRIER_GLOBAL_BUFFER);
    exec.unbind();
 }