From d58427a519134ebba63433844c1f04d3b55d0622 Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Tue, 22 Feb 2022 22:46:12 +0000
Subject: [PATCH] Don't kill entire OpenGL cache on undo.

The comment regarding bitmaps was true for one more month in 2018, but
hasn't been true for the last 3 years, and clearing the cache is a huge
performance hit.
---
 eeschema/schematic_undo_redo.cpp | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/eeschema/schematic_undo_redo.cpp b/eeschema/schematic_undo_redo.cpp
index 1ef5fdf4a3..faf4d204c8 100644
--- a/eeschema/schematic_undo_redo.cpp
+++ b/eeschema/schematic_undo_redo.cpp
@@ -350,9 +350,6 @@ void SCH_EDIT_FRAME::PutDataInPreviousState( PICKED_ITEMS_LIST* aList )
         }
     }
 
-    // Bitmaps are cached in Opengl: clear the cache, because
-    // the cache data can be invalid
-    GetCanvas()->GetView()->RecacheAllItems();
     GetCanvas()->GetView()->ClearHiddenFlags();
 }
 
@@ -383,7 +380,6 @@ void SCH_EDIT_FRAME::RollbackSchematicFromUndo()
         m_toolManager->GetTool<EE_SELECTION_TOOL>()->RebuildSelection();
     }
 
-    SyncView();
     GetCanvas()->Refresh();
 }