From: Marek Olšák <marek.ol...@amd.com>

---
 src/gallium/drivers/radeon/r600_texture.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gallium/drivers/radeon/r600_texture.c 
b/src/gallium/drivers/radeon/r600_texture.c
index 21bb3f9..229fa5e 100644
--- a/src/gallium/drivers/radeon/r600_texture.c
+++ b/src/gallium/drivers/radeon/r600_texture.c
@@ -1487,6 +1487,14 @@ void evergreen_do_fast_color_clear(struct 
r600_common_context *rctx,
                        continue;
                }
 
+               /* shared textures can't use fast clear without an explicit 
flush,
+                * because there is no way to communicate the clear color among
+                * all clients
+                */
+               if (tex->resource.is_shared &&
+                   !(tex->resource.external_usage & 
PIPE_HANDLE_USAGE_EXPLICIT_FLUSH))
+                       continue;
+
                /* fast color clear with 1D tiling doesn't work on old kernels 
and CIK */
                if (tex->surface.level[0].mode == RADEON_SURF_MODE_1D &&
                    rctx->chip_class >= CIK &&
-- 
2.5.0

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