diff options
| -rw-r--r-- | src/gallium/docs/source/context.rst | 12 | ||||
| -rw-r--r-- | src/gallium/include/pipe/p_context.h | 5 |
2 files changed, 14 insertions, 3 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index 78b01cc9cb..a7669575b9 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 diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h index f3ee095448..f1e6a60e04 100644 --- a/src/gallium/include/pipe/p_context.h +++ b/src/gallium/include/pipe/p_context.h @@ -122,6 +122,11 @@ struct pipe_context { void (*begin_query)(struct pipe_context *pipe, struct pipe_query *q); void (*end_query)(struct pipe_context *pipe, struct pipe_query *q); + /** + * Get results of a query. + * \param wait if true, this query will block until the result is ready + * \return TRUE if results are ready, FALSE otherwise + */ boolean (*get_query_result)(struct pipe_context *pipe, struct pipe_query *q, boolean wait, |