diff options
| author | Zack Rusin <[email protected]> | 2011-01-26 00:01:51 -0500 |
|---|---|---|
| committer | Zack Rusin <[email protected]> | 2011-01-26 00:03:12 -0500 |
| commit | 0657fc00dd9e69f71d679d480b5d5f4c33cfae35 (patch) | |
| tree | 3215786daa5ba2552a193c1ea9a3d8586679f9ad /src/gallium/docs/source | |
| parent | 779e9cb658dba4ef44fae7e8aa62409f7227f46c (diff) | |
gallium: add an interface for query predicates
as specified in the arb_occlusion_query2. just the interface.
Diffstat (limited to 'src/gallium/docs/source')
| -rw-r--r-- | src/gallium/docs/source/context.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index 6760e7be4b9..f0d3b84783d 100644 --- a/src/gallium/docs/source/context.rst +++ b/src/gallium/docs/source/context.rst @@ -233,6 +233,11 @@ The most common type of query is the occlusion query, are written to the framebuffer without being culled by :ref:`Depth, Stencil, & Alpha` testing or shader KILL instructions. The result is an unsigned 64-bit integer. +In cases where a boolean result of an occlusion query is enough, +``PIPE_QUERY_OCCLUSION_PREDICATE`` should be used. It is just like +``PIPE_QUERY_OCCLUSION_COUNTER`` except that the result is a boolean +value of FALSE for cases where COUNTER would result in 0 and TRUE +for all other cases. Another type of query, ``PIPE_QUERY_TIME_ELAPSED``, returns the amount of time, in nanoseconds, the context takes to perform operations. |