Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
src/gallium/docs/source/context.rst | 5 +++++
src/gallium/include/pipe/p_context.h | 24 ++++++++++++++++++++++++
src/gallium/include/pipe/p_defines.h | 2 ++
3 files changed, 31 insertions(+)
diff --git a/src/gallium/docs/source/context.rst
b/src/gallium/docs/source/context.rst
index 9a32716..a97308a 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -325,6 +325,11 @@ 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.
+``get_query_result_resource`` is used to store the result of a query into
+a resource without synchronizing with the CPU. This write will optionally
+wait for the query to complete, and will optionally write whether the value
+is available instead of the value itself.
+
The interface currently includes the following types of queries:
``PIPE_QUERY_OCCLUSION_COUNTER`` counts the number of fragments which
diff --git a/src/gallium/include/pipe/p_context.h
b/src/gallium/include/pipe/p_context.h
index be7447d..4f21d37 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -150,6 +150,30 @@ struct pipe_context {
struct pipe_query *q,
boolean wait,
union pipe_query_result *result);
+
+ /**
+ * Get results of a query, storing into resource.
+ * \param wait if true, this query will block until the result is ready
+ * \param result_type the type of the value being stored:
+ * 0 - i32
+ * 1 - u32
+ * 2 - i64
+ * 3 - u64
+ * \param index for queries that return multiple pieces of data, which
+ * item of that data to store (e.g. for
+ * PIPE_QUERY_PIPELINE_STATISTICS).
+ * When the index is -1, instead of the value of the query
+ * the driver should instead write a 1/0 to the appropriate
+ * location with 1 meaning that the query result is available.
+ */
+ void (*get_query_result_resource)(struct pipe_context *pipe,
+ struct pipe_query *q,
+ boolean wait,
+ unsigned result_type,
+ int index,
+ struct pipe_resource *resource,
+ unsigned offset);
+
/*@}*/
/**
diff --git a/src/gallium/include/pipe/p_defines.h
b/src/gallium/include/pipe/p_defines.h
index dd76fe5..012c098 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -352,6 +352,7 @@ enum pipe_flush_flags
* Flags for pipe_context::memory_barrier.
*/
#define PIPE_BARRIER_MAPPED_BUFFER (1 << 0)
+#define PIPE_BARRIER_QUERY_BUFFER (1 << 1)
/**
* Resource binding flags -- state tracker must specify in advance all
@@ -375,6 +376,7 @@ enum pipe_flush_flags
#define PIPE_BIND_SHADER_IMAGE (1 << 15) /* set_shader_images */
#define PIPE_BIND_COMPUTE_RESOURCE (1 << 16) /* set_compute_resources */
#define PIPE_BIND_COMMAND_ARGS_BUFFER (1 << 17) /* pipe_draw_info.indirect */
+#define PIPE_BIND_QUERY_BUFFER (1 << 18) /* get_query_result_resource
*/
/**
* The first two flags above were previously part of the amorphous
--
2.4.10
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