1 files changed, 4 insertions, 0 deletions
diff --git a/video/out/gl_common.h b/video/out/gl_common.h
index 1cb3a5c441..1d33682f3e 100644
--- a/video/out/gl_common.h
+++ b/video/out/gl_common.h
@@ -109,6 +109,10 @@ typedef struct MPGLContext {
     void (*register_resize_callback)(struct vo *vo,
                                      void (*cb)(struct vo *vo, int w, int h));
 
+    // Optional activity state of context.
+    // If false, OpenGL renderers should not draw anything.
+    bool (*is_active)(struct MPGLContext *);
+
     // For free use by the backend.
     void *priv;
 } MPGLContext;