[PATCH 2/3] d3d9/tests: Test window region and child window clipping.

[Rémi Bernon]

From: Rémi Bernon

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58844
---
 dlls/d3d9/tests/device.c | 124 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)

diff --git a/dlls/d3d9/tests/device.c b/dlls/d3d9/tests/device.c
index b782833c37d..a67c4025ac1 100644
--- a/dlls/d3d9/tests/device.c
+++ b/dlls/d3d9/tests/device.c
@@ -15299,6 +15299,129 @@ static void test_d3d9on12(void)
 out:
     DestroyWindow(window);
 }
+static RGNDATA *get_region_data(HRGN region)
+{
+    RGNDATA *data = NULL;
+    DWORD size;
+
+    if (region && (size = GetRegionData(region, 0, NULL)) && (data = malloc(size)))
+        GetRegionData(region, size, data);
+
+    return data;
+}
+
+static void test_window_region(void)
+{
+    struct device_desc device_desc;
+    IDirect3DDevice9 *device;
+    IDirect3D9 *d3d9;
+    RGNDATA *data;
+    HRGN region;
+    HWND window;
+    UINT ret;
+    HDC dc;
+
+    window = CreateWindowA("static", "d3d9_test", WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_CLIPCHILDREN,
+            CW_USEDEFAULT, CW_USEDEFAULT, 300, 300, NULL, NULL, NULL, NULL);
+    CreateWindowA("#32770", "", WS_CHILD | WS_VISIBLE, 0, 0, 100, 100, window, NULL, NULL, NULL);
+    flush_events();
+
+    d3d9 = Direct3DCreate9(D3D_SDK_VERSION);
+    ok(!!d3d9, "Failed to create a D3D object.\n");
+
+
+    device_desc.adapter_ordinal = D3DADAPTER_DEFAULT;
+    device_desc.device_window = window;
+    device_desc.width = 300;
+    device_desc.height = 300;
+    device_desc.flags = CREATE_DEVICE_NOWINDOWCHANGES;
+    if (!(device = create_device(d3d9, window, &device_desc)))
+    {
+        skip("Failed to create a D3D device, skipping tests.\n");
+        IDirect3D9_Release(d3d9);
+        DestroyWindow(window);
+        return;
+    }
+
+    region = CreateRectRgn(0, 0, 0, 0);
+    dc = GetDCEx(window, 0, DCX_CACHE | DCX_USESTYLE);
+    ret = GetRandomRgn(dc, region, SYSRGN);
+    ok(ret == 1, "got %d\n", ret);
+    data = get_region_data(region);
+    ok(data->rdh.nCount == 2, "got nCount %lu\n", data->rdh.nCount);
+    free(data);
+    DeleteObject(region);
+
+    IDirect3DDevice9_Release(device);
+
+    device_desc.flags = 0;
+    if (!(device = create_device(d3d9, window, &device_desc)))
+    {
+        skip("Failed to create a D3D device, skipping tests.\n");
+        IDirect3D9_Release(d3d9);
+        DestroyWindow(window);
+        return;
+    }
+
+    region = CreateRectRgn(0, 0, 0, 0);
+    dc = GetDCEx(window, 0, DCX_CACHE | DCX_USESTYLE);
+    ret = GetRandomRgn(dc, region, SYSRGN);
+    ok(ret == 1, "got %d\n", ret);
+    data = get_region_data(region);
+    ok(data->rdh.nCount == 2, "got nCount %lu\n", data->rdh.nCount);
+    free(data);
+    DeleteObject(region);
+
+    IDirect3DDevice9_Release(device);
+
+    device_desc.width = registry_mode.dmPelsWidth;
+    device_desc.height = registry_mode.dmPelsHeight;
+    device_desc.flags = CREATE_DEVICE_NOWINDOWCHANGES | CREATE_DEVICE_FULLSCREEN;
+    if (!(device = create_device(d3d9, window, &device_desc)))
+    {
+        skip("Failed to create a D3D device, skipping tests.\n");
+        IDirect3D9_Release(d3d9);
+        DestroyWindow(window);
+        return;
+    }
+
+    region = CreateRectRgn(0, 0, 0, 0);
+    dc = GetDCEx(window, 0, DCX_CACHE | DCX_USESTYLE);
+    ret = GetRandomRgn(dc, region, SYSRGN);
+    ok(ret == 1, "got %d\n", ret);
+    data = get_region_data(region);
+    ok(data->rdh.nCount == 2, "got nCount %lu\n", data->rdh.nCount);
+    free(data);
+    ReleaseDC(window, dc);
+    DeleteObject(region);
+
+    IDirect3DDevice9_Release(device);
+
+    device_desc.flags = CREATE_DEVICE_FULLSCREEN;
+    if (!(device = create_device(d3d9, window, &device_desc)))
+    {
+        skip("Failed to create a D3D device, skipping tests.\n");
+        IDirect3D9_Release(d3d9);
+        DestroyWindow(window);
+        return;
+    }
+
+    region = CreateRectRgn(0, 0, 0, 0);
+    dc = GetDCEx(window, 0, DCX_CACHE | DCX_USESTYLE);
+    ret = GetRandomRgn(dc, region, SYSRGN);
+    ok(ret == 1, "got %d\n", ret);
+    data = get_region_data(region);
+    ok(data->rdh.nCount == 2, "got nCount %lu\n", data->rdh.nCount);
+    free(data);
+    ReleaseDC(window, dc);
+    DeleteObject(region);
+
+    IDirect3DDevice9_Release(device);
+
+
+    IDirect3D9_Release(d3d9);
+    DestroyWindow(window);
+}

START_TEST(device)
 {
@@ -15437,6 +15560,7 @@ START_TEST(device)
     test_cursor_clipping();
     test_window_position();
     test_d3d9on12();
+    test_window_region();

UnregisterClassA("d3d9_test_wc", GetModuleHandleA(NULL));
 }