gallium-docs: Add documentation for threading requirements
Add documentation for the requirements related to threading for screens and contexts. Signed-off-by: Axel Davy <axel.davy@ens.fr> Reviewed-by: Marek Olšák <marek.olsak@amd.com>
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@ -737,3 +737,13 @@ query group at the specified **index** is returned in **info**.
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The function returns non-zero on success.
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The driver-specific query group is described with the
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pipe_driver_query_group_info structure.
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Thread safety
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-------------
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Screen methods are required to be thread safe. While gallium rendering
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contexts are not required to be thread safe, it is required to be safe to use
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different contexts created with the same screen in different threads without
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locks. It is also required to be safe using screen methods in a thread, while
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using one of its contexts in another (without locks).
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