d3d9/tests: Some tests for D3DPRESENTFLAG_LOCKABLE_BACKBUFFER mode.

dlls/d3d9/tests/device.c

@@ -11740,6 +11740,96 @@ static void test_destroyed_window(void)
     ok(!refcount, "Device has %u references left.\n", refcount);
 }
 
+static void test_lockable_backbuffer(void)
+{
+    D3DPRESENT_PARAMETERS present_parameters = {0};
+    struct device_desc device_desc;
+    IDirect3DSurface9 *surface;
+    IDirect3DDevice9 *device;
+    D3DLOCKED_RECT lockrect;
+    IDirect3D9 *d3d;
+    ULONG refcount;
+    HWND window;
+    HRESULT hr;
+    HDC dc;
+
+    window = CreateWindowA("d3d9_test_wc", "d3d9_test", WS_OVERLAPPEDWINDOW,
+            0, 0, 640, 480, 0, 0, 0, 0);
+    d3d = Direct3DCreate9(D3D_SDK_VERSION);
+    ok(!!d3d, "Failed to create a D3D object.\n");
+
+    if (!(device = create_device(d3d, window, NULL)))
+    {
+        skip("Failed to create a D3D device, skipping tests.\n");
+        IDirect3D9_Release(d3d);
+        DestroyWindow(window);
+        return;
+    }
+
+    hr = IDirect3DDevice9_GetBackBuffer(device, 0, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface9_LockRect(surface, &lockrect, NULL, D3DLOCK_DISCARD);
+todo_wine
+    ok(hr == D3DERR_INVALIDCALL, "Got unexpected hr %#x.\n", hr);
+
+    dc = (void *)0xdeadbeef;
+    hr = IDirect3DSurface9_GetDC(surface, &dc);
+    ok(dc == (void *)0xdeadbeef, "Unexpected DC returned.\n");
+    ok(hr == D3DERR_INVALIDCALL, "Got unexpected hr %#x.\n", hr);
+
+    IDirect3DSurface9_Release(surface);
+
+    /* Reset with D3DPRESENTFLAG_LOCKABLE_BACKBUFFER. */
+    present_parameters.BackBufferWidth = 640;
+    present_parameters.BackBufferHeight = 480;
+    present_parameters.BackBufferFormat = D3DFMT_A8R8G8B8;
+    present_parameters.SwapEffect = D3DSWAPEFFECT_DISCARD;
+    present_parameters.hDeviceWindow = window;
+    present_parameters.Windowed = TRUE;
+    present_parameters.EnableAutoDepthStencil = TRUE;
+    present_parameters.AutoDepthStencilFormat = D3DFMT_D24S8;
+    present_parameters.Flags = D3DPRESENTFLAG_LOCKABLE_BACKBUFFER;
+
+    hr = IDirect3DDevice9_Reset(device, &present_parameters);
+    ok(SUCCEEDED(hr), "Failed to reset device, hr %#x.\n", hr);
+
+    hr = IDirect3DDevice9_GetBackBuffer(device, 0, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface9_LockRect(surface, &lockrect, NULL, D3DLOCK_DISCARD);
+todo_wine
+    ok(SUCCEEDED(hr), "Failed to lock rect, hr %#x.\n", hr);
+    hr = IDirect3DSurface9_UnlockRect(surface);
+    ok(SUCCEEDED(hr), "Failed to unlock rect, hr %#x.\n", hr);
+
+    IDirect3DSurface9_Release(surface);
+    refcount = IDirect3DDevice9_Release(device);
+    ok(!refcount, "Device has %u references left.\n", refcount);
+
+    device_desc.width = 640;
+    device_desc.height = 480;
+    device_desc.device_window = window;
+    device_desc.flags = CREATE_DEVICE_LOCKABLE_BACKBUFFER;
+
+    device = create_device(d3d, window, &device_desc);
+    ok(!!device, "Failed to create device.\n");
+
+    hr = IDirect3DDevice9_GetBackBuffer(device, 0, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface9_LockRect(surface, &lockrect, NULL, D3DLOCK_DISCARD);
+    ok(SUCCEEDED(hr), "Failed to lock rect, hr %#x.\n", hr);
+    hr = IDirect3DSurface9_UnlockRect(surface);
+    ok(SUCCEEDED(hr), "Failed to unlock rect, hr %#x.\n", hr);
+
+    IDirect3DSurface9_Release(surface);
+    refcount = IDirect3DDevice9_Release(device);
+    ok(!refcount, "Device has %u references left.\n", refcount);
+    IDirect3D9_Release(d3d);
+    DestroyWindow(window);
+}
+
 START_TEST(device)
 {
     WNDCLASSA wc = {0};
@@ -11859,6 +11949,7 @@ START_TEST(device)
     test_render_target_device_mismatch();
     test_format_unknown();
     test_destroyed_window();
+    test_lockable_backbuffer();
 
     UnregisterClassA("d3d9_test_wc", GetModuleHandleA(NULL));
 }