Zebediah Figura : winex11: Track the client colormap separately.

[Alexandre Julliard]

Module: wine
Branch: oldstable
Commit: cd13f18f1181947be52223808433f3c79c82a4e1
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=cd13f18f1181947be52223808...

Author: Zebediah Figura <z.figura12(a)gmail.com>
Date:   Wed Sep 18 21:44:19 2019 -0500

winex11: Track the client colormap separately.

If a window with an OpenGL surface attached is reparented as a child window,
and then reparented as a top-level window, so that its whole window is
destroyed and then recreated, it will be recreated with the colormap of its
child window, which more than likely has a different visual. This violates
the X11 specification, which states that a window's colormap must have the
same visual as the window itself, and causes the X server to return BadMatch
to the CreateWindow request.

Signed-off-by: Zebediah Figura <z.figura12(a)gmail.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>
(cherry picked from commit 22993aff94ad4b3539ed99648f8180cfc7b9253c)
Signed-off-by: Michael Stefaniuc <mstefani(a)winehq.org>

---

 dlls/winex11.drv/window.c | 21 +++++++++++----------
 dlls/winex11.drv/x11drv.h |  3 ++-
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 7589b3228e..04576e500a 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -313,7 +313,7 @@ static unsigned long get_mwm_decorations( struct x11drv_win_data *data,
 static int get_window_attributes( struct x11drv_win_data *data, XSetWindowAttributes *attr )
 {
     attr->override_redirect = !data->managed;
-    attr->colormap          = data->colormap ? data->colormap : default_colormap;
+    attr->colormap          = data->whole_colormap ? data->whole_colormap : default_colormap;
     attr->save_under        = ((GetClassLongW( data->hwnd, GCL_STYLE ) & CS_SAVEBITS) != 0);
     attr->bit_gravity       = NorthWestGravity;
     attr->backing_store     = NotUseful;
@@ -1444,12 +1444,12 @@ Window create_client_window( HWND hwnd, const XVisualInfo *visual )
         TRACE( "%p reparent xwin %lx/%lx\n", data->hwnd, data->whole_window, data->client_window );
     }
 
-    if (data->colormap) XFreeColormap( gdi_display, data->colormap );
-    data->colormap = XCreateColormap( gdi_display, dummy_parent, visual->visual,
-                                      (visual->class == PseudoColor ||
-                                       visual->class == GrayScale ||
-                                       visual->class == DirectColor) ? AllocAll : AllocNone );
-    attr.colormap = data->colormap;
+    if (data->client_colormap) XFreeColormap( gdi_display, data->client_colormap );
+    data->client_colormap = XCreateColormap( gdi_display, dummy_parent, visual->visual,
+                                            (visual->class == PseudoColor ||
+                                             visual->class == GrayScale ||
+                                             visual->class == DirectColor) ? AllocAll : AllocNone );
+    attr.colormap = data->client_colormap;
     attr.bit_gravity = NorthWestGravity;
     attr.win_gravity = NorthWestGravity;
     attr.backing_store = NotUseful;
@@ -1508,7 +1508,7 @@ static void create_whole_window( struct x11drv_win_data *data )
     data->shaped = (win_rgn != 0);
 
     if (data->vis.visualid != default_visual.visualid)
-        data->colormap = XCreateColormap( data->display, root_window, data->vis.visual, AllocNone );
+        data->whole_colormap = XCreateColormap( data->display, root_window, data->vis.visual, AllocNone );
 
     mask = get_window_attributes( data, &attr );
 
@@ -1585,9 +1585,9 @@ static void destroy_whole_window( struct x11drv_win_data *data, BOOL already_des
         XDeleteContext( data->display, data->whole_window, winContext );
         if (!already_destroyed) XDestroyWindow( data->display, data->whole_window );
     }
-    if (data->colormap) XFreeColormap( data->display, data->colormap );
+    if (data->whole_colormap) XFreeColormap( data->display, data->whole_colormap );
     data->whole_window = data->client_window = 0;
-    data->colormap = 0;
+    data->whole_colormap = 0;
     data->wm_state = WithdrawnState;
     data->net_wm_state = 0;
     data->mapped = FALSE;
@@ -1693,6 +1693,7 @@ void CDECL X11DRV_DestroyWindow( HWND hwnd )
     if (thread_data->last_xic_hwnd == hwnd) thread_data->last_xic_hwnd = 0;
     if (data->icon_pixmap) XFreePixmap( gdi_display, data->icon_pixmap );
     if (data->icon_mask) XFreePixmap( gdi_display, data->icon_mask );
+    if (data->client_colormap) XFreeColormap( data->display, data->client_colormap );
     HeapFree( GetProcessHeap(), 0, data->icon_bits );
     XDeleteContext( gdi_display, (XID)hwnd, win_data_context );
     release_win_data( data );
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index a0308b0675..e6f4c2a8b9 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -552,7 +552,8 @@ struct x11drv_win_data
 {
     Display    *display;        /* display connection for the thread owning the window */
     XVisualInfo vis;            /* X visual used by this window */
-    Colormap    colormap;       /* colormap if non-default visual */
+    Colormap    whole_colormap; /* colormap if non-default visual */
+    Colormap    client_colormap; /* colormap for the client window */
     HWND        hwnd;           /* hwnd that this private data belongs to */
     Window      whole_window;   /* X window for the complete window */
     Window      client_window;  /* X window for the client area */