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iris: Allocate coherent buffers for resources flagged as persistent/coherent

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If the application requests a coherent resource, we should honor that.
We technically don't need to ensure coherency for persistent mappings,
but we would have to handle PIPE_BARRIER_MAPPED_BUFFER to ensure that
data became visible at the right times. Instead, we just opt for the
easy plan and mark them coherent too.

Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22878>
This commit is contained in:
Kenneth Graunke
2023-04-05 15:41:05 -07:00
committed by Marge Bot
parent 8b70754753
commit 758bf5f764
1 changed files with 1 additions and 1 deletions
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src/gallium/drivers/iris/iris_resource.c
+1 -1
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@@ -498,7 +498,7 @@ iris_resource_alloc_flags(const struct iris_screen *screen,
if (templ->flags & (PIPE_RESOURCE_FLAG_MAP_COHERENT |
PIPE_RESOURCE_FLAG_MAP_PERSISTENT))
flags |= BO_ALLOC_SMEM;
flags |= BO_ALLOC_SMEM | BO_ALLOC_COHERENT;
if (screen->devinfo->verx10 >= 125 && screen->devinfo->has_local_mem &&
isl_aux_usage_has_ccs(aux_usage)) {