Lighthouse xcb and xlib: Add support for transparency of GLX windows.

Merge-request: 1231
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
(cherry picked from commit a3b627e1c5ce03a2500ab35c64729b1995639dcc)

1 files changed, 3 insertions, 1 deletions

diff --git a/src/plugins/platforms/wayland/gl_integration/xcomposite_glx/qwaylandxcompositeglxcontext.cpp b/src/plugins/platforms/wayland/gl_integration/xcomposite_glx/qwaylandxcompositeglxcontext.cpp
index caf51170a6..baf0fa3432 100644
--- a/src/plugins/platforms/wayland/gl_integration/xcomposite_glx/qwaylandxcompositeglxcontext.cpp
+++ b/src/plugins/platforms/wayland/gl_integration/xcomposite_glx/qwaylandxcompositeglxcontext.cpp
@@ -132,10 +132,12 @@ void QWaylandXCompositeGLXContext::geometryChanged()
     Colormap cmap = XCreateColormap(mGlxIntegration->xDisplay(),mGlxIntegration->rootWindow(),visualInfo->visual,AllocNone);
 
     XSetWindowAttributes a;
+    a.background_pixel = WhitePixel(mGlxIntegration->xDisplay(), mGlxIntegration->screen());
+    a.border_pixel = BlackPixel(mGlxIntegration->xDisplay(), mGlxIntegration->screen());
     a.colormap = cmap;
     mXWindow = XCreateWindow(mGlxIntegration->xDisplay(), mGlxIntegration->rootWindow(),0, 0, size.width(), size.height(),
                              0, visualInfo->depth, InputOutput, visualInfo->visual,
-                             CWColormap, &a);
+                             CWBackPixel|CWBorderPixel|CWColormap, &a);
 
     XCompositeRedirectWindow(mGlxIntegration->xDisplay(), mXWindow, CompositeRedirectManual);
     XMapWindow(mGlxIntegration->xDisplay(), mXWindow);