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-rw-r--r--include/GL/internal/dri_interface.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index e7fbf8e8b8..1b637afaf3 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -170,7 +170,7 @@ struct __DRIframeTrackingExtensionRec {
* Used by drivers that implement the GLX_SGI_video_sync extension.
*/
#define __DRI_MEDIA_STREAM_COUNTER "DRI_MediaStreamCounter"
-#define __DRI_MEDIA_STREAM_COUNTER_VERSION 1
+#define __DRI_MEDIA_STREAM_COUNTER_VERSION 2
struct __DRImediaStreamCounterExtensionRec {
__DRIextension base;
@@ -189,6 +189,18 @@ struct __DRImediaStreamCounterExtensionRec {
int (*waitForMSC)(__DRIdrawable *drawable,
int64_t target_msc, int64_t divisor, int64_t remainder,
int64_t * msc, int64_t * sbc);
+
+ /**
+ * Like the screen version of getMSC, but also takes a drawable so that
+ * the appropriate pipe's counter can be retrieved.
+ *
+ * Get the number of vertical refreshes since some point in time before
+ * this function was first called (i.e., system start up).
+ *
+ * \since Internal API version 2
+ */
+ int (*getDrawableMSC)(__DRIscreen *screen, void *drawablePrivate,
+ int64_t *msc);
};