gallium: Basic compute interface.

Define an interface that exposes the minimal functionality required to
implement some of the popular compute APIs.  This commit adds entry
points to set the grid layout and other state required to keep track
of the usual address spaces employed in compute APIs, to bind a
compute program, and execute it on the device.

Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
index 45c441b2fcf..7ae7c9a04e1 100644
--- a/src/gallium/include/pipe/p_screen.h
+++ b/src/gallium/include/pipe/p_screen.h
@@ -98,6 +98,18 @@ struct pipe_screen {
 			   enum pipe_video_profile profile,
 			   enum pipe_video_cap param );
 
+   /**
+    * Query a compute-specific capability/parameter/limit.
+    * \param param  one of PIPE_COMPUTE_CAP_x
+    * \param ret    pointer to a preallocated buffer that will be
+    *               initialized to the parameter value, or NULL.
+    * \return       size in bytes of the parameter value that would be
+    *               returned.
+    */
+   int (*get_compute_param)(struct pipe_screen *,
+			    enum pipe_compute_cap param,
+			    void *ret);
+
    struct pipe_context * (*context_create)( struct pipe_screen *,
 					    void *priv );