context: Add an accessor to get display associated with the context

https://bugzilla.gnome.org/show_bug.cgi?id=657347

Reviewed-by: Robert Bragg <robert@linux.intel.com>

cogl/cogl-context.c

@@ -495,6 +495,12 @@ _cogl_context_get_default (void)
   return _context;
 }
 
+CoglDisplay *
+cogl_context_get_display (CoglContext *context)
+{
+  return context->display;
+}
+
 #ifdef COGL_HAS_EGL_SUPPORT
 EGLDisplay
 cogl_egl_context_get_egl_display (CoglContext *context)

cogl/cogl-context.h

@@ -61,6 +61,10 @@ CoglContext *
 cogl_context_new (CoglDisplay *display,
                   GError **error);
 
+#define cogl_context_get_display cogl_context_get_display_EXP
+CoglDisplay *
+cogl_context_get_display (CoglContext *context);
+
 #ifdef COGL_HAS_EGL_SUPPORT
 #define cogl_egl_context_get_egl_display cogl_egl_context_get_egl_display_EXP
 EGLDisplay

doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt

@@ -72,6 +72,7 @@ cogl_wayland_display_set_compositor_display
 
 <SUBSECTION>
 cogl_context_new
+cogl_context_get_display
 
 <SUBSECTION>
 cogl_push_matrix