From 7ce022010ccc4dbdaa406283a95f4390e498c043 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Mon, 17 Oct 2016 21:43:38 +0200
Subject: [PATCH] Make sure shadow pointers for persistent maps are initialised
 correctly

---
 renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp b/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
index da2ae15ec..2451ff905 100644
--- a/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
+++ b/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
@@ -380,6 +380,10 @@ void WrappedOpenGL::Common_glNamedBufferStorageEXT(ResourceId id, GLsizeiptr siz
 
       // persistent maps always need both sets of shadow storage, so allocate up front.
       record->AllocShadowStorage(size);
+
+      // ensure shadow pointers have up to date data for diffing
+      memcpy(record->GetShadowPtr(0), data, size);
+      memcpy(record->GetShadowPtr(1), data, size);
     }
   }
   else