bugfix [#23068] Image editor: Update Automatically not updating the compositor.

       [#23637] Replacing an image used in the compositor crashes
       [#23343] changes in images doesn't update compositor image nodes

1 files changed, 19 insertions, 1 deletions

diff --git a/source/blender/editors/space_node/space_node.c b/source/blender/editors/space_node/space_node.c
index d9a4dda9d6e..c94fcb52e38 100644
--- a/source/blender/editors/space_node/space_node.c
+++ b/source/blender/editors/space_node/space_node.c
@@ -42,6 +42,7 @@
 
 #include "BKE_context.h"
 #include "BKE_screen.h"
+#include "BKE_node.h"
 
 #include "ED_render.h"
 #include "ED_screen.h"
@@ -158,7 +159,10 @@ static void node_init(struct wmWindowManager *wm, ScrArea *sa)
 
 static void node_area_listener(ScrArea *sa, wmNotifier *wmn)
 {
-	
+	/* note, ED_area_tag_refresh will re-execute compositor */
+	/* XXX, should edit some to check for the nodeTree type, especially  NC_NODE|NA_EDITED which refreshes all types */
+	SpaceNode *snode= sa->spacedata.first;
+
 	/* preview renders */
 	switch(wmn->category) {
 		case NC_SCENE:
@@ -200,6 +204,20 @@ static void node_area_listener(ScrArea *sa, wmNotifier *wmn)
 			if (wmn->action == NA_EDITED)
 				ED_area_tag_refresh(sa);
 			break;
+
+		case NC_IMAGE:
+			if (wmn->action == NA_EDITED) {
+				if(snode->treetype==NTREE_COMPOSIT) {
+					Scene *scene= wmn->window->screen->scene;
+					
+					/* note that NodeTagIDChanged is alredy called by BKE_image_signal() on all
+					 * scenes so really this is just to know if the images is used in the compo else
+					 * painting on images could become very slow when the compositor is open. */
+					if(NodeTagIDChanged(scene->nodetree, wmn->reference))
+						ED_area_tag_refresh(sa);
+				}
+			}
+			break;
 	}
 }