winex11.drv: Allow OpenGL on minimized windows.

dlls/opengl32/tests/opengl.c

@@ -650,6 +650,75 @@ static void test_opengl3(HDC hdc)
     }
 }
 
+static void test_minimized(void)
+{
+    PIXELFORMATDESCRIPTOR pf_desc =
+    {
+        sizeof(PIXELFORMATDESCRIPTOR),
+        1,                     /* version */
+        PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
+        PFD_TYPE_RGBA,
+        24,                    /* 24-bit color depth */
+        0, 0, 0, 0, 0, 0,      /* color bits */
+        0,                     /* alpha buffer */
+        0,                     /* shift bit */
+        0,                     /* accumulation buffer */
+        0, 0, 0, 0,            /* accum bits */
+        32,                    /* z-buffer */
+        0,                     /* stencil buffer */
+        0,                     /* auxiliary buffer */
+        PFD_MAIN_PLANE,        /* main layer */
+        0,                     /* reserved */
+        0, 0, 0                /* layer masks */
+    };
+    int pixel_format;
+    HWND window;
+    LONG style;
+    HGLRC ctx;
+    BOOL ret;
+    HDC dc;
+
+    window = CreateWindowA("static", "opengl32_test",
+            WS_POPUP | WS_MINIMIZE, 0, 0, 640, 480, 0, 0, 0, 0);
+    ok(!!window, "Failed to create window, last error %#x.\n", GetLastError());
+
+    dc = GetDC(window);
+    ok(!!dc, "Failed to get DC.\n");
+
+    pixel_format = ChoosePixelFormat(dc, &pf_desc);
+    if (!pixel_format)
+    {
+        win_skip("Failed to find pixel format.\n");
+        ReleaseDC(window, dc);
+        DestroyWindow(window);
+        return;
+    }
+
+    ret = SetPixelFormat(dc, pixel_format, &pf_desc);
+    ok(ret, "Failed to set pixel format, last error %#x.\n", GetLastError());
+
+    style = GetWindowLongA(window, GWL_STYLE);
+    ok(style & WS_MINIMIZE, "Window should be minimized, got style %#x.\n", style);
+
+    ctx = wglCreateContext(dc);
+    ok(!!ctx, "Failed to create GL context, last error %#x.\n", GetLastError());
+
+    ret = wglMakeCurrent(dc, ctx);
+    ok(ret, "Failed to make context current, last error %#x.\n", GetLastError());
+
+    style = GetWindowLongA(window, GWL_STYLE);
+    ok(style & WS_MINIMIZE, "window should be minimized, got style %#x.\n", style);
+
+    ret = wglMakeCurrent(NULL, NULL);
+    ok(ret, "Failed to clear current context, last error %#x.\n", GetLastError());
+
+    ret = wglDeleteContext(ctx);
+    ok(ret, "Failed to delete GL context, last error %#x.\n", GetLastError());
+
+    ReleaseDC(window, dc);
+    DestroyWindow(window);
+}
+
 START_TEST(opengl)
 {
     HWND hwnd;
@@ -704,6 +773,7 @@ START_TEST(opengl)
         res = SetPixelFormat(hdc, iPixelFormat, &pfd);
         ok(res, "SetPixelformat failed: %x\n", GetLastError());
 
+        test_minimized();
         test_dc(hwnd, hdc);
 
         hglrc = wglCreateContext(hdc);

dlls/winex11.drv/window.c

@@ -1951,16 +1951,16 @@ void CDECL X11DRV_GetDC( HDC hdc, HWND hwnd, HWND top, const RECT *win_rect,
     escape.pixmap      = 0;
     escape.gl_copy     = FALSE;
 
-    if (top == hwnd && data && IsIconic( hwnd ) && data->icon_window)
-    {
-        escape.drawable = data->icon_window;
-    }
-    else if (top == hwnd)
+    if (top == hwnd)
     {
         escape.fbconfig_id = data ? data->fbconfig_id : (XID)GetPropA( hwnd, fbconfig_id_prop );
         /* GL draws to the client area even for window DCs */
         escape.gl_drawable = data ? data->client_window : X11DRV_get_client_window( hwnd );
-        if (flags & DCX_WINDOW)
+        if (data && IsIconic( hwnd ) && data->icon_window)
+        {
+            escape.drawable = data->icon_window;
+        }
+        else if (flags & DCX_WINDOW)
             escape.drawable = data ? data->whole_window : X11DRV_get_whole_window( hwnd );
         else
             escape.drawable = escape.gl_drawable;