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-rw-r--r--src/mesa/pipe/p_winsys.h14
1 files changed, 12 insertions, 2 deletions
diff --git a/src/mesa/pipe/p_winsys.h b/src/mesa/pipe/p_winsys.h
index f46807995d8..2aac403c20b 100644
--- a/src/mesa/pipe/p_winsys.h
+++ b/src/mesa/pipe/p_winsys.h
@@ -138,20 +138,30 @@ struct pipe_winsys
* usage is a bitmask of PIPE_BUFFER_USAGE_PIXEL/VERTEX/INDEX/CONSTANT. This
* usage argument is only an optimization hint, not a guarantee, therefore
* proper behavior must be observed in all circumstances.
+ *
+ * Returns zero on success.
*/
int (*buffer_data)(struct pipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned size, const void *data,
unsigned usage);
- /** Modify some or all of the data contained in a buffer's data store */
+ /**
+ * Modify some or all of the data contained in a buffer's data store.
+ *
+ * Returns zero on success.
+ */
int (*buffer_subdata)(struct pipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned long offset,
unsigned long size,
const void *data);
- /** Query some or all of the data contained in a buffer's data store */
+ /**
+ * Query some or all of the data contained in a buffer's data store.
+ *
+ * Returns zero on success.
+ */
int (*buffer_get_subdata)(struct pipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned long offset,