Refactor: Make current_scene_update a base render method

Should be no functional changes.

source/blender/render/intern/pipeline.cc

@@ -1078,7 +1078,7 @@ static void do_render_engine(Render *re)
   /* now use renderdata and camera to set viewplane */
   RE_SetCamera(re, camera);
 
-  re->current_scene_update_cb(re->suh, re->scene);
+  re->current_scene_update(re->scene);
   RE_engine_render(re, false);
 
   /* when border render, check if we have to insert it in black */
@@ -1188,7 +1188,7 @@ static void do_render_compositor_scenes(Render *re)
 
   if (changed_scene) {
     /* If rendered another scene, switch back to the current scene with compositing nodes. */
-    re->current_scene_update_cb(re->suh, re->scene);
+    re->current_scene_update(re->scene);
   }
 }
 

source/blender/render/intern/render_types.cc

@@ -41,6 +41,13 @@ Render::~Render()
   render_result_free(pushedresult);
 }
 
+void Render::current_scene_update(struct Scene *scene)
+{
+  if (current_scene_update_cb) {
+    current_scene_update_cb(suh, scene);
+  }
+}
+
 void Render::stats_draw(RenderStats *render_stats)
 {
   if (stats_draw_cb) {

source/blender/render/intern/render_types.h

@@ -49,6 +49,8 @@ struct BaseRender {
                                   const char *view_name) = 0;
   virtual void compositor_free() = 0;
 
+  virtual void current_scene_update(struct Scene *scene) = 0;
+
   virtual void stats_draw(RenderStats *render_stats) = 0;
   virtual void progress(float progress) = 0;
 
@@ -97,6 +99,8 @@ struct ViewRender : public BaseRender {
   }
   void compositor_free() override {}
 
+  void current_scene_update(struct Scene * /*scene*/) override {}
+
   void stats_draw(RenderStats * /*render_stats*/) override {}
   void progress(const float /*progress*/) override {}
 
@@ -134,6 +138,8 @@ struct Render : public BaseRender {
                           const char *view_name) override;
   void compositor_free() override;
 
+  void current_scene_update(struct Scene *scene) override;
+
   void stats_draw(RenderStats *render_stats) override;
   void progress(float progress) override;