+static inline struct pipe_resource *
+st_get_renderbuffer_resource(struct gl_renderbuffer *rb)
+{
+ return st_renderbuffer(rb)->texture;
+}
+
+/**
+ * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
+ * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
+ * We'll only return non-null for window system framebuffers.
+ * Note that this function may fail.
+ */
+static inline struct st_framebuffer *
+st_ws_framebuffer(struct gl_framebuffer *fb)
+{
+ /* FBO cannot be casted. See st_new_framebuffer */
+ if (fb && _mesa_is_winsys_fbo(fb) &&
+ fb != _mesa_get_incomplete_framebuffer())
+ return (struct st_framebuffer *) fb;
+ return NULL;
+}
+