From c8065048f431c3b76a744afed1e2c86e5c7617d5 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Mon, 9 Nov 2015 23:29:55 +0100
Subject: [PATCH] Make sure to retry when loading an image that's been
 refreshed

* Fixes a potential race if a change is detected while some other
  program has an exclusive lock on the file to write it, and we try to
  open before it's possible. A slow retry fixes that.
---
 renderdoc/core/image_viewer.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/renderdoc/core/image_viewer.cpp b/renderdoc/core/image_viewer.cpp
index f4e15fbdd..5ab1040fe 100644
--- a/renderdoc/core/image_viewer.cpp
+++ b/renderdoc/core/image_viewer.cpp
@@ -297,7 +297,20 @@ ReplayCreateStatus IMG_CreateReplayDevice(const char *logfile, IReplayDriver **d
 
 void ImageViewer::RefreshFile()
 {
-	FILE *f = FileIO::fopen(m_Filename.c_str(), "rb");
+	FILE *f = NULL;
+
+	for(int attempt=0; attempt < 10 && f == NULL; attempt++)
+	{
+		f = FileIO::fopen(m_Filename.c_str(), "rb");
+		if(f)
+			break;
+		Threading::Sleep(400);
+	}
+
+	if(!f)
+	{
+		RDCERR("Couldn't open file! Exclusive lock elsewhere?");
+	}
 
 	FetchTexture texDetails;