From 120286aef59dabdb7c9fa762e08457e5cc8ec3a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <daenzer@vmware.com>
Date: Thu, 3 Sep 2009 08:05:59 +0200
Subject: [PATCH] glx: Add screen DestroyWindow wrapper to destroy the GLX
 drawable.

Fixes crashes exitting MacSlow's rgba-glx demo.
---
 glx/glxscreens.c | 28 ++++++++++++++++++++++++++++
 glx/glxscreens.h |  1 +
 2 files changed, 29 insertions(+)

diff --git a/glx/glxscreens.c b/glx/glxscreens.c
index 3fff26866..81faddd04 100644
--- a/glx/glxscreens.c
+++ b/glx/glxscreens.c
@@ -212,6 +212,7 @@ glxCloseScreen (int index, ScreenPtr pScreen)
     __GLXscreen *pGlxScreen = glxGetScreen(pScreen);
 
     pScreen->CloseScreen = pGlxScreen->CloseScreen;
+    pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
 
     pGlxScreen->destroy(pGlxScreen);
 
@@ -395,6 +396,31 @@ pickFBConfig(__GLXscreen *pGlxScreen, VisualPtr visual)
     return best;
 }
 
+static Bool
+glxDestroyWindow(WindowPtr pWin)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    __GLXscreen *pGlxScreen = glxGetScreen(pScreen);
+    Bool retval = TRUE;
+
+    FreeResource(pWin->drawable.id, FALSE);
+
+    /* call lower wrapped functions */
+    if (pGlxScreen->DestroyWindow) {
+	/* unwrap */
+	pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
+
+	/* call lower layers */
+	retval = (*pScreen->DestroyWindow)(pWin);
+
+	/* rewrap */
+	pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
+	pScreen->DestroyWindow = glxDestroyWindow;
+    }
+
+    return retval;
+}
+
 void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
 {
     __GLXconfig *m;
@@ -409,6 +435,8 @@ void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
 
     pGlxScreen->CloseScreen = pScreen->CloseScreen;
     pScreen->CloseScreen = glxCloseScreen;
+    pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
+    pScreen->DestroyWindow = glxDestroyWindow;
 
     i = 0;
     for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {
diff --git a/glx/glxscreens.h b/glx/glxscreens.h
index 34e441e7c..3c1bdd4ba 100644
--- a/glx/glxscreens.h
+++ b/glx/glxscreens.h
@@ -162,6 +162,7 @@ struct __GLXscreen {
     char *GLXextensions;
 
     Bool (*CloseScreen)(int index, ScreenPtr pScreen);
+    Bool (*DestroyWindow)(WindowPtr pWindow);
 };