From 835f6f56495be85457dbd0201be4e47700bcea7e Mon Sep 17 00:00:00 2001
From: Jose Fonseca <jfonseca@vmware.com>
Date: Tue, 22 Dec 2015 12:50:30 +0000
Subject: d3dretrace: Create a single window per HWND.

---
 retrace/d3d9retrace.py    |  7 ++++++-
 retrace/d3dretrace.hpp    |  3 +++
 retrace/d3dretrace_ws.cpp | 22 ++++++++++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/retrace/d3d9retrace.py b/retrace/d3d9retrace.py
index 7313acc9..ac6af73b 100644
--- a/retrace/d3d9retrace.py
+++ b/retrace/d3d9retrace.py
@@ -88,7 +88,12 @@ class D3DRetracer(Retracer):
 
         # create windows as neccessary
         if method.name in ('CreateDevice', 'CreateDeviceEx', 'CreateAdditionalSwapChain'):
-            print r'    HWND hWnd = d3dretrace::createWindow(pPresentationParameters->BackBufferWidth, pPresentationParameters->BackBufferHeight);'
+            print r'    HWND hWnd = pPresentationParameters->hDeviceWindow;'
+            if 'hFocusWindow' in method.argNames():
+                print r'    if (hWnd == NULL) {'
+                print r'        hWnd = hFocusWindow;'
+                print r'    }'
+            print r'    hWnd = d3dretrace::createWindow(hWnd, pPresentationParameters->BackBufferWidth, pPresentationParameters->BackBufferHeight);'
             print r'    pPresentationParameters->hDeviceWindow = hWnd;'
             if 'hFocusWindow' in method.argNames():
                 print r'    hFocusWindow = hWnd;'
diff --git a/retrace/d3dretrace.hpp b/retrace/d3dretrace.hpp
index 034e6165..d0be5773 100644
--- a/retrace/d3dretrace.hpp
+++ b/retrace/d3dretrace.hpp
@@ -86,6 +86,9 @@ public:
 HWND
 createWindow(int width, int height);
 
+HWND
+createWindow(HWND hWnd, int width, int height);
+
 void
 resizeWindow(HWND hWnd, int width, int height);
 
diff --git a/retrace/d3dretrace_ws.cpp b/retrace/d3dretrace_ws.cpp
index 22b973cc..62f3a9c7 100644
--- a/retrace/d3dretrace_ws.cpp
+++ b/retrace/d3dretrace_ws.cpp
@@ -47,6 +47,28 @@ createWindow(int width, int height)
 }
 
 
+typedef std::map<HWND, HWND> HWND_MAP;
+static HWND_MAP g_hWndMap;
+
+
+HWND
+createWindow(HWND hWnd, int width, int height)
+{
+    HWND_MAP::iterator it;
+    it = g_hWndMap.find(hWnd);
+    if (it == g_hWndMap.end()) {
+        // Create a new window
+        hWnd = createWindow(width, height);
+        g_hWndMap[hWnd] = hWnd;
+    } else {
+        // Reuse the existing window
+        hWnd = it->second;
+        ws::resizeWindow(hWnd, width, height);
+    }
+    return hWnd;
+}
+
+
 void
 resizeWindow(HWND hWnd, int width, int height)
 {
-- 
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