render: introduce wlr_renderer_get_drm_fd

2 files changed, 8 insertions, 0 deletions

diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h
index 1b57c660..70e954f8 100644
--- a/include/wlr/render/interface.h
+++ b/include/wlr/render/interface.h
@@ -72,6 +72,7 @@ struct wlr_renderer_impl {
 	bool (*blit_dmabuf)(struct wlr_renderer *renderer,
 		struct wlr_dmabuf_attributes *dst,
 		struct wlr_dmabuf_attributes *src);
+	int (*get_drm_fd)(struct wlr_renderer *renderer);
 };
 
 void wlr_renderer_init(struct wlr_renderer *renderer,
diff --git a/include/wlr/render/wlr_renderer.h b/include/wlr/render/wlr_renderer.h
index 8908d3ce..915ec915 100644
--- a/include/wlr/render/wlr_renderer.h
+++ b/include/wlr/render/wlr_renderer.h
@@ -132,6 +132,13 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
 	struct wl_display *wl_display);
 
 /**
+ * Obtains the FD of the DRM device used for rendering, or -1 if unavailable.
+ *
+ * The caller doesn't have ownership of the FD, it must not close it.
+ */
+int wlr_renderer_get_drm_fd(struct wlr_renderer *r);
+
+/**
  * Destroys this wlr_renderer. Textures must be destroyed separately.
  */
 void wlr_renderer_destroy(struct wlr_renderer *renderer);