privatize the renderer

src/compositor.rs

@@ -140,7 +140,7 @@ pub struct Compositor {
     /// Optional screenshooter manager extension
     pub screenshooter: Option<screenshooter::Screenshooter>,
     /// The renderer used to draw things to the screen.
-    pub renderer: Option<GenericRenderer>,
+    renderer: Option<GenericRenderer>,
     /// XWayland server, only Some if it is enabled
     pub xwayland: Option<xwayland::Server>,
     /// The DnD manager
@@ -693,6 +693,11 @@ impl Compositor {
         self.socket_name.as_str()
     }
 
+    /// Returns a reference to the Renderer for the Compositor
+    pub fn get_renderer(&self) -> &Option<GenericRenderer> {
+        &self.renderer
+    }
+
     /// Enters the wayland event loop. Won't return until the compositor is
     /// shut off.
     pub fn run(self) {

src/types/dmabuf.rs

@@ -15,7 +15,7 @@ impl Dmabuf {
     pub fn new(compositor: &Compositor) -> Option<Self> {
         unsafe {
             // Get the renderer from compositor
-            let renderer: Option<&GenericRenderer> = compositor.renderer.as_ref();
+            let renderer: Option<&GenericRenderer> = compositor.get_renderer().as_ref();
             match renderer {
                 Some(ref renderer) => {
                     let dmabuf_raw = wlr_linux_dmabuf_v1_create(compositor.display as *mut wl_display, renderer.as_ptr());