[cogl] Implicitly allocate on cogl_wayland_onscreen_get_(shell_)?surface

[Neil Roberts <nroberts src gnome org>]

commit 0c4ba78787323fedd162d7b71b86b460908b9b98
Author: Neil Roberts <neil linux intel com>
Date:   Wed Jul 3 18:32:00 2013 +0100

    Implicitly allocate on cogl_wayland_onscreen_get_(shell_)?surface
    
    The idea with the framebuffer allocation is that it will lazily
    allocate so that if you don't want to handle errors then you don't
    have to be aware that there is an allocation step. In order for this
    to work any accessors that get data that is only available after
    allocation should implicitly allocate the framebuffer. This patch
    makes that change for cogl_wayland_onscreen_get_surface and
    cogl_wayland_onscreen_get_shell_surface.
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl/winsys/cogl-winsys-egl-wayland.c |   36 ++++++++++++++------------------
 1 files changed, 16 insertions(+), 20 deletions(-)
---
diff --git a/cogl/winsys/cogl-winsys-egl-wayland.c b/cogl/winsys/cogl-winsys-egl-wayland.c
index 0727bbc..0af2cfb 100644
--- a/cogl/winsys/cogl-winsys-egl-wayland.c
+++ b/cogl/winsys/cogl-winsys-egl-wayland.c
@@ -633,33 +633,29 @@ cogl_wayland_renderer_get_shell (CoglRenderer *renderer)
 struct wl_surface *
 cogl_wayland_onscreen_get_surface (CoglOnscreen *onscreen)
 {
-  CoglFramebuffer *fb;
+  CoglOnscreenEGL *egl_onscreen;
+  CoglOnscreenWayland *wayland_onscreen;
 
-  fb = COGL_FRAMEBUFFER (onscreen);
-  if (fb->allocated)
-    {
-      CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
-      CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
-      return wayland_onscreen->wayland_surface;
-    }
-  else
-    return NULL;
+  cogl_framebuffer_allocate (COGL_FRAMEBUFFER (onscreen), NULL);
+
+  egl_onscreen = onscreen->winsys;
+  wayland_onscreen = egl_onscreen->platform;
+
+  return wayland_onscreen->wayland_surface;
 }
 
 struct wl_shell_surface *
 cogl_wayland_onscreen_get_shell_surface (CoglOnscreen *onscreen)
 {
-  CoglFramebuffer *fb;
+  CoglOnscreenEGL *egl_onscreen;
+  CoglOnscreenWayland *wayland_onscreen;
 
-  fb = COGL_FRAMEBUFFER (onscreen);
-  if (fb->allocated)
-    {
-      CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
-      CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
-      return wayland_onscreen->wayland_shell_surface;
-    }
-  else
-    return NULL;
+  cogl_framebuffer_allocate (COGL_FRAMEBUFFER (onscreen), NULL);
+
+  egl_onscreen = onscreen->winsys;
+  wayland_onscreen = egl_onscreen->platform;
+
+  return wayland_onscreen->wayland_shell_surface;
 }
 
 void