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zink: no-op read access buffer barriers if existing access exists for earlier stage

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only the earliest stage should be applied for these barriers, so we can skip
ones where the existing access is earlier

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11131>
This commit is contained in:
Mike Blumenkrantz 2021-03-03 13:00:55 -05:00 • committed by Marge Bot
parent cbaba3f1b9
commit ef2e29f3b5
1 changed files with 4 additions and 3 deletions
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7
src/gallium/drivers/zink/zink_context.c
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@ -2202,9 +2202,10 @@ zink_resource_buffer_needs_barrier(struct zink_resource *res, VkAccessFlags flag
return true;
if (!pipeline)
pipeline = pipeline_access_stage(flags);
return (res->access_stage & pipeline) != pipeline || (res->access & flags) != flags ||
zink_resource_access_is_write(res->access) ||
zink_resource_access_is_write(flags);
return zink_resource_access_is_write(res->access) ||
zink_resource_access_is_write(flags) ||
((res->access_stage & pipeline) != pipeline && !(res->access_stage & (pipeline - 1))) ||
(res->access & flags) != flags;
}
ALWAYS_INLINE static bool