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Diffstat (limited to 'src/gallium/docs/source')
| -rw-r--r-- | src/gallium/docs/source/context.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index 78b01cc9cbe..a7669575b95 100644 --- a/src/gallium/docs/source/context.rst +++ b/src/gallium/docs/source/context.rst @@ -148,9 +148,15 @@ draws. Queries may be nested, though no state tracker currently exercises this. Queries can be created with ``create_query`` and deleted with -``destroy_query``. To enable a query, use ``begin_query``, and when finished, -use ``end_query`` to stop the query. Finally, ``get_query_result`` is used -to retrieve the results. +``destroy_query``. To start a query, use ``begin_query``, and when finished, +use ``end_query`` to end the query. + +``get_query_result`` is used to retrieve the results of a query. If +the ``wait`` parameter is TRUE, then the ``get_query_result`` call +will block until the results of the query are ready (and TRUE will be +returned). Otherwise, if the ``wait`` parameter is FALSE, the call +will not block and the return value will be TRUE if the query has +completed or FALSE otherwise. A common type of query is the occlusion query which counts the number of fragments/pixels which are written to the framebuffer (and not culled by |