gallium: add sparse buffer interface and capability

v2:
- explain the resource_commit interface in more detail

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

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h
index a29fff514a6..4d5535b9fd6 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -585,6 +585,19 @@ struct pipe_context {
    void (*memory_barrier)(struct pipe_context *, unsigned flags);
 
    /**
+    * Change the commitment status of a part of the given resource, which must
+    * have been created with the PIPE_RESOURCE_FLAG_SPARSE bit.
+    *
+    * \param level The texture level whose commitment should be changed.
+    * \param box The region of the resource whose commitment should be changed.
+    * \param commit Whether memory should be committed or un-committed.
+    *
+    * \return false if out of memory, true on success.
+    */
+   bool (*resource_commit)(struct pipe_context *, struct pipe_resource *,
+                           unsigned level, struct pipe_box *box, bool commit);
+
+   /**
     * Creates a video codec for a specific video format/profile
     */
    struct pipe_video_codec *(*create_video_codec)( struct pipe_context *context,