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These bits are intended to be used by the ddebug hang detection and are named in analogy to the Vulkan stage bits (and the corresponding Radeon pipeline event). Hang detection needs fences on the granularity of individual commands, which nothing else really covers. The closest alternative would have been PIPE_QUERY_GPU_FINISHED, but (a) queries are a per-context object and we really want a per-screen object, (b) queries don't offer a wait with timeout, and (c) in any case, PIPE_QUERY_GPU_FINISHED is meant to imply that GPU caches are flushed, which the new bits explicitly aren't. Reviewed-by: Marek Olšák <marek.olsak@amd.com> |
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