From f950f41bfe821879b9974f204c1f0e7ad26ebf89 Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Tue, 23 Oct 2012 16:34:57 +0200
Subject: [PATCH] Revert "winex11: Refuse to set the pixel format for
 HWND_MESSAGE windows."

This reverts commit 53806917a3fc32460201a40a9edd6d8d24983c25.
Tests show that this is allowed.
---
 dlls/opengl32/tests/opengl.c | 79 ++++++++++++++++++++++++++++++++++++
 dlls/winex11.drv/opengl.c    | 12 ++----
 2 files changed, 83 insertions(+), 8 deletions(-)

diff --git a/dlls/opengl32/tests/opengl.c b/dlls/opengl32/tests/opengl.c
index 4f799d2af3e..02a72c825ba 100644
--- a/dlls/opengl32/tests/opengl.c
+++ b/dlls/opengl32/tests/opengl.c
@@ -1110,6 +1110,84 @@ static void test_window_dc(void)
     DestroyWindow(window);
 }
 
+static void test_message_window(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;
+    RECT vp, r;
+    HGLRC ctx;
+    BOOL ret;
+    HDC dc;
+    GLenum glerr;
+
+    window = CreateWindowA("static", "opengl32_test",
+                           WS_OVERLAPPEDWINDOW, 0, 0, 100, 100, HWND_MESSAGE, 0, 0, 0);
+    if (!window)
+    {
+        win_skip( "HWND_MESSAGE not supported\n" );
+        return;
+    }
+    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());
+
+    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());
+
+    GetClientRect(window, &r);
+    glGetIntegerv(GL_VIEWPORT, (GLint *)&vp);
+    ok(EqualRect(&r, &vp), "Viewport not equal to client rect.\n");
+
+    glClear(GL_COLOR_BUFFER_BIT);
+    glFinish();
+    glerr = glGetError();
+    ok(glerr == GL_NO_ERROR, "Failed glClear, error %#x.\n", glerr);
+    ret = SwapBuffers(dc);
+    ok(ret, "Failed SwapBuffers, error %#x.\n", GetLastError());
+
+    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);
+}
+
 static void test_destroy(HDC oldhdc)
 {
     PIXELFORMATDESCRIPTOR pf_desc =
@@ -1458,6 +1536,7 @@ START_TEST(opengl)
         test_bitmap_rendering( FALSE );
         test_minimized();
         test_window_dc();
+        test_message_window();
         test_dc(hwnd, hdc);
 
         hglrc = wglCreateContext(hdc);
diff --git a/dlls/winex11.drv/opengl.c b/dlls/winex11.drv/opengl.c
index 7c30ce0a3ef..61aff532efd 100644
--- a/dlls/winex11.drv/opengl.c
+++ b/dlls/winex11.drv/opengl.c
@@ -1170,9 +1170,9 @@ static BOOL create_gl_drawable( HWND hwnd, HWND parent, struct gl_drawable *gl )
 
     gl->drawable = 0;
 
-    if (parent == GetDesktopWindow())  /* top-level window */
+    if (GetAncestor( hwnd, GA_PARENT ) == GetDesktopWindow())  /* top-level window */
     {
-        Window xparent = X11DRV_get_whole_window( hwnd );
+        Window parent = X11DRV_get_whole_window( hwnd );
 
         gl->type = DC_GL_WINDOW;
         gl->colormap = XCreateColormap( gdi_display, root_window, gl->visual->visual,
@@ -1185,8 +1185,8 @@ static BOOL create_gl_drawable( HWND hwnd, HWND parent, struct gl_drawable *gl )
         attrib.backing_store = NotUseful;
         /* put the initial rect outside of the window, it will be moved into place by SetWindowPos */
         OffsetRect( &gl->rect, gl->rect.right, gl->rect.bottom );
-        if (xparent)
-            gl->drawable = XCreateWindow( gdi_display, xparent, gl->rect.left, gl->rect.top,
+        if (parent)
+            gl->drawable = XCreateWindow( gdi_display, parent, gl->rect.left, gl->rect.top,
                                           gl->rect.right - gl->rect.left, gl->rect.bottom - gl->rect.top,
                                           0, default_visual.depth, InputOutput, gl->visual->visual,
                                           CWBitGravity | CWWinGravity | CWBackingStore | CWColormap,
@@ -1196,10 +1196,6 @@ static BOOL create_gl_drawable( HWND hwnd, HWND parent, struct gl_drawable *gl )
         else
             XFreeColormap( gdi_display, gl->colormap );
     }
-    else if (!GetAncestor( parent, GA_PARENT ))
-    {
-        FIXME( "can't set format of HWND_MESSAGE window %p\n", hwnd );
-    }
 #ifdef SONAME_LIBXCOMPOSITE
     else if(usexcomposite)
     {