eglfs: Add support for systems without pbuffer support

Use a small native window and window surface in case the hooks indicate
that pbuffer support is not available.

Change-Id: I6515309041f0e1e2f5321d59941f35d6ee16dca7
Reviewed-by: Louai Al-Khanji <louai.al-khanji@digia.com>
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/gui/kernel/qplatformopenglcontext.cpp b/src/gui/kernel/qplatformopenglcontext.cpp
index 527bfdd983..bf0dccd440 100644
--- a/src/gui/kernel/qplatformopenglcontext.cpp
+++ b/src/gui/kernel/qplatformopenglcontext.cpp
@@ -89,6 +89,16 @@ QPlatformOpenGLContext::~QPlatformOpenGLContext()
 }
 
 /*!
+  Called after a new instance is constructed. The default implementation does nothing.
+
+  Subclasses can use this function to perform additional initialization that relies on
+  virtual functions.
+ */
+void QPlatformOpenGLContext::initialize()
+{
+}
+
+/*!
     Reimplement in subclass if your platform uses framebuffer objects for surfaces.
 
     The default implementation returns 0.