d3d10core: Implement d3d10_buffer_GetDevice().

dlls/d3d10core/buffer.c

@@ -59,7 +59,10 @@ static ULONG STDMETHODCALLTYPE d3d10_buffer_AddRef(ID3D10Buffer *iface)
     TRACE("%p increasing refcount to %u.\n", buffer, refcount);
 
     if (refcount == 1)
+    {
+        ID3D10Device1_AddRef(buffer->device);
         wined3d_buffer_incref(buffer->wined3d_buffer);
+    }
 
     return refcount;
 }
@@ -72,7 +75,14 @@ static ULONG STDMETHODCALLTYPE d3d10_buffer_Release(ID3D10Buffer *iface)
     TRACE("%p decreasing refcount to %u.\n", buffer, refcount);
 
     if (!refcount)
+    {
+        ID3D10Device1 *device = buffer->device;
+
         wined3d_buffer_decref(buffer->wined3d_buffer);
+        /* Release the device last, it may cause the wined3d device to be
+         * destroyed. */
+        ID3D10Device1_Release(device);
+    }
 
     return refcount;
 }
@@ -81,7 +91,12 @@ static ULONG STDMETHODCALLTYPE d3d10_buffer_Release(ID3D10Buffer *iface)
 
 static void STDMETHODCALLTYPE d3d10_buffer_GetDevice(ID3D10Buffer *iface, ID3D10Device **device)
 {
-    FIXME("iface %p, device %p stub!\n", iface, device);
+    struct d3d10_buffer *buffer = impl_from_ID3D10Buffer(iface);
+
+    TRACE("iface %p, device %p.\n", iface, device);
+
+    *device = (ID3D10Device *)buffer->device;
+    ID3D10Device_AddRef(*device);
 }
 
 static HRESULT STDMETHODCALLTYPE d3d10_buffer_GetPrivateData(ID3D10Buffer *iface,
@@ -226,5 +241,8 @@ HRESULT d3d10_buffer_init(struct d3d10_buffer *buffer, struct d3d10_device *devi
         return hr;
     }
 
+    buffer->device = &device->ID3D10Device1_iface;
+    ID3D10Device1_AddRef(buffer->device);
+
     return S_OK;
 }

dlls/d3d10core/d3d10core_private.h

@@ -108,6 +108,7 @@ struct d3d10_buffer
     LONG refcount;
 
     struct wined3d_buffer *wined3d_buffer;
+    ID3D10Device1 *device;
 };
 
 HRESULT d3d10_buffer_init(struct d3d10_buffer *buffer, struct d3d10_device *device,

dlls/d3d10core/tests/device.c

@@ -260,12 +260,12 @@ static void test_create_rendertarget_view(void)
 {
     D3D10_RENDER_TARGET_VIEW_DESC rtv_desc;
     D3D10_TEXTURE2D_DESC texture_desc;
+    ULONG refcount, expected_refcount;
     D3D10_BUFFER_DESC buffer_desc;
     ID3D10RenderTargetView *rtview;
+    ID3D10Device *device, *tmp;
     ID3D10Texture2D *texture;
     ID3D10Buffer *buffer;
-    ID3D10Device *device;
-    ULONG refcount;
     HRESULT hr;
 
     if (!(device = create_device()))
@@ -280,8 +280,18 @@ static void test_create_rendertarget_view(void)
     buffer_desc.CPUAccessFlags = 0;
     buffer_desc.MiscFlags = 0;
 
+    expected_refcount = get_refcount((IUnknown *)device) + 1;
     hr = ID3D10Device_CreateBuffer(device, &buffer_desc, NULL, &buffer);
     ok(SUCCEEDED(hr), "Failed to create a buffer, hr %#x\n", hr);
+    refcount = get_refcount((IUnknown *)device);
+    ok(refcount >= expected_refcount, "Got unexpected refcount %u, expected >= %u.\n", refcount, expected_refcount);
+    tmp = NULL;
+    expected_refcount = refcount + 1;
+    ID3D10Buffer_GetDevice(buffer, &tmp);
+    ok(tmp == device, "Got unexpected device %p, expected %p.\n", tmp, device);
+    refcount = get_refcount((IUnknown *)device);
+    ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
+    ID3D10Device_Release(tmp);
 
     rtv_desc.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
     rtv_desc.ViewDimension = D3D10_RTV_DIMENSION_BUFFER;