Henri Verbeet : d3d8: Properly retrieve an interface pointer in IDirect3DSwapChain8Impl_GetBackBuffer ().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 532d2246928d1fe17b55989a0e21eeea5e58aa84
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=532d2246928d1fe17b55989a0e...

Author: Henri Verbeet 
Date:   Thu Apr 19 20:44:56 2012 +0200

d3d8: Properly retrieve an interface pointer in IDirect3DSwapChain8Impl_GetBackBuffer().

---

dlls/d3d8/swapchain.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/dlls/d3d8/swapchain.c b/dlls/d3d8/swapchain.c
index 8979519..9d2da09 100644
--- a/dlls/d3d8/swapchain.c
+++ b/dlls/d3d8/swapchain.c
@@ -110,6 +110,7 @@ static HRESULT WINAPI IDirect3DSwapChain8Impl_GetBackBuffer(IDirect3DSwapChain8
 {
     IDirect3DSwapChain8Impl *This = impl_from_IDirect3DSwapChain8(iface);
     struct wined3d_surface *wined3d_surface = NULL;
+    IDirect3DSurface8Impl *surface_impl;
     HRESULT hr;

TRACE("iface %p, backbuffer_idx %u, backbuffer_type %#x, backbuffer %p.\n",
@@ -120,7 +121,8 @@ static HRESULT WINAPI IDirect3DSwapChain8Impl_GetBackBuffer(IDirect3DSwapChain8
             iBackBuffer, (enum wined3d_backbuffer_type)Type, &wined3d_surface);
     if (SUCCEEDED(hr) && wined3d_surface)
     {
-        *ppBackBuffer = wined3d_surface_get_parent(wined3d_surface);
+        surface_impl = wined3d_surface_get_parent(wined3d_surface);
+        *ppBackBuffer = &surface_impl->IDirect3DSurface8_iface;
         IDirect3DSurface8_AddRef(*ppBackBuffer);
         wined3d_surface_decref(wined3d_surface);
     }