d3d8/tests: Port test_lockable_backbuffer() from d3d9.

dlls/d3d8/tests/device.c

@@ -33,9 +33,10 @@ struct vec3
     float x, y, z;
 };
 
-#define CREATE_DEVICE_FULLSCREEN        0x01
-#define CREATE_DEVICE_FPU_PRESERVE      0x02
-#define CREATE_DEVICE_SWVP_ONLY         0x04
+#define CREATE_DEVICE_FULLSCREEN            0x01
+#define CREATE_DEVICE_FPU_PRESERVE          0x02
+#define CREATE_DEVICE_SWVP_ONLY             0x04
+#define CREATE_DEVICE_LOCKABLE_BACKBUFFER   0x08
 
 struct device_desc
 {
@@ -122,6 +123,8 @@ static IDirect3DDevice8 *create_device(IDirect3D8 *d3d8, HWND focus_window, cons
         present_parameters.BackBufferHeight = desc->height;
         present_parameters.hDeviceWindow = desc->device_window;
         present_parameters.Windowed = !(desc->flags & CREATE_DEVICE_FULLSCREEN);
+        if (desc->flags & CREATE_DEVICE_LOCKABLE_BACKBUFFER)
+            present_parameters.Flags |= D3DPRESENTFLAG_LOCKABLE_BACKBUFFER;
         if (desc->flags & CREATE_DEVICE_SWVP_ONLY)
             behavior_flags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
         if (desc->flags & CREATE_DEVICE_FPU_PRESERVE)
@@ -8406,6 +8409,89 @@ 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;
+    IDirect3DSurface8 *surface;
+    IDirect3DDevice8 *device;
+    D3DLOCKED_RECT lockrect;
+    IDirect3D8 *d3d;
+    ULONG refcount;
+    HWND window;
+    HRESULT hr;
+
+    window = create_window();
+    d3d = Direct3DCreate8(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");
+        IDirect3D8_Release(d3d);
+        DestroyWindow(window);
+        return;
+    }
+
+    hr = IDirect3DDevice8_GetBackBuffer(device, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface8_LockRect(surface, &lockrect, NULL, D3DLOCK_READONLY);
+todo_wine
+    ok(hr == D3DERR_INVALIDCALL, "Got unexpected hr %#x.\n", hr);
+
+    IDirect3DSurface8_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 = IDirect3DDevice8_Reset(device, &present_parameters);
+    ok(SUCCEEDED(hr), "Failed to reset device, hr %#x.\n", hr);
+
+    hr = IDirect3DDevice8_GetBackBuffer(device, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface8_LockRect(surface, &lockrect, NULL, D3DLOCK_READONLY);
+todo_wine
+    ok(SUCCEEDED(hr), "Failed to lock rect, hr %#x.\n", hr);
+    hr = IDirect3DSurface8_UnlockRect(surface);
+    ok(SUCCEEDED(hr), "Failed to unlock rect, hr %#x.\n", hr);
+
+    IDirect3DSurface8_Release(surface);
+    refcount = IDirect3DDevice8_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 = IDirect3DDevice8_GetBackBuffer(device, 0, D3DBACKBUFFER_TYPE_MONO, &surface);
+    ok(SUCCEEDED(hr), "Failed to get backbuffer, hr %#x.\n", hr);
+
+    hr = IDirect3DSurface8_LockRect(surface, &lockrect, NULL, D3DLOCK_READONLY);
+    ok(SUCCEEDED(hr), "Failed to lock rect, hr %#x.\n", hr);
+    hr = IDirect3DSurface8_UnlockRect(surface);
+    ok(SUCCEEDED(hr), "Failed to unlock rect, hr %#x.\n", hr);
+
+    IDirect3DSurface8_Release(surface);
+    refcount = IDirect3DDevice8_Release(device);
+    ok(!refcount, "Device has %u references left.\n", refcount);
+    IDirect3D8_Release(d3d);
+    DestroyWindow(window);
+}
+
 static void test_clip_planes_limits(void)
 {
     static const DWORD device_flags[] = {0, CREATE_DEVICE_SWVP_ONLY};
@@ -8805,6 +8891,7 @@ START_TEST(device)
     test_render_target_device_mismatch();
     test_format_unknown();
     test_destroyed_window();
+    test_lockable_backbuffer();
     test_clip_planes_limits();
     test_swapchain_multisample_reset();
     test_device_caps();