Fix #35337: sculpt performance regression, partial redraw was not working anymore

due to paint cursor redraw problem.

3 files changed, 9 insertions, 2 deletions

diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index 166aef48ec7..cfa914091f1 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -63,6 +63,7 @@ struct wmDropBox;
 struct wmDrag;
 struct ImBuf;
 struct ImageFormatData;
+struct ARegion;
 
 typedef struct wmJob wmJob;
 
@@ -130,6 +131,7 @@ void		*WM_paint_cursor_activate(struct wmWindowManager *wm,
                                       void *customdata);
 
 void		WM_paint_cursor_end(struct wmWindowManager *wm, void *handle);
+void		WM_paint_cursor_tag_redraw(struct wmWindow *win, struct ARegion *ar);
 
 void		WM_cursor_warp		(struct wmWindow *win, int x, int y);
 float		WM_cursor_pressure	(const struct wmWindow *win);
diff --git a/source/blender/windowmanager/intern/wm_draw.c b/source/blender/windowmanager/intern/wm_draw.c
index 005d02647a4..438004b5d76 100644
--- a/source/blender/windowmanager/intern/wm_draw.c
+++ b/source/blender/windowmanager/intern/wm_draw.c
@@ -798,6 +798,12 @@ void wm_tag_redraw_overlay(wmWindow *win, ARegion *ar)
 	}
 }
 
+void WM_paint_cursor_tag_redraw(wmWindow *win, ARegion *ar)
+{
+	win->screen->do_draw_paintcursor = TRUE;
+	wm_tag_redraw_overlay(win, ar);
+}
+
 void wm_draw_update(bContext *C)
 {
 	wmWindowManager *wm = CTX_wm_manager(C);
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index f79ac1c9083..89dc6ccc038 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -2002,8 +2002,7 @@ static void wm_paintcursor_tag(bContext *C, wmPaintCursor *pc, ARegion *ar)
 		for (; pc; pc = pc->next) {
 			if (pc->poll == NULL || pc->poll(C)) {
 				wmWindow *win = CTX_wm_window(C);
-				win->screen->do_draw_paintcursor = TRUE;
-				wm_tag_redraw_overlay(win, ar);
+				WM_paint_cursor_tag_redraw(win, ar);
 			}
 		}
 	}