x11: Use EGL instead of GLX when drawing using GLES

When running as a X11 CM we shouldn't use the GLX winsys when the
driver doesn't support it, i.e. OpenGL ES drivers.

https://bugzilla.gnome.org/show_bug.cgi?id=771636

3 files changed, 9 insertions, 7 deletions

diff --git a/cogl/cogl/cogl-mutter.h b/cogl/cogl/cogl-mutter.h
index 4bfac07fa..a1cd7e301 100644
--- a/cogl/cogl/cogl-mutter.h
+++ b/cogl/cogl/cogl-mutter.h
@@ -42,7 +42,7 @@
 #include <cogl/winsys/cogl-winsys-egl-private.h>
 #include <cogl/winsys/cogl-winsys-private.h>
 
-void cogl_renderer_set_custom_winsys (CoglRenderer          *renderer,
-                                      CoglWinsysVtableGetter winsys_vtable_getter);
+void cogl_renderer_set_custom_winsys (CoglRenderer                *renderer,
+                                      CoglCustomWinsysVtableGetter winsys_vtable_getter);
 
 #endif /* __COGL_MUTTER_H___ */
diff --git a/cogl/cogl/cogl-renderer-private.h b/cogl/cogl/cogl-renderer-private.h
index 33ed0ceac..a833a6819 100644
--- a/cogl/cogl/cogl-renderer-private.h
+++ b/cogl/cogl/cogl-renderer-private.h
@@ -39,12 +39,13 @@
 #include "cogl-texture-driver.h"
 #include "cogl-context.h"
 #include "cogl-closure-list-private.h"
-#include "cogl-mutter.h"
 
 #ifdef COGL_HAS_XLIB_SUPPORT
 #include <X11/Xlib.h>
 #endif
 
+typedef const CoglWinsysVtable *(*CoglCustomWinsysVtableGetter) (CoglRenderer *renderer);
+
 struct _CoglRenderer
 {
   CoglObject _parent;
@@ -53,7 +54,7 @@ struct _CoglRenderer
   const CoglDriverVtable *driver_vtable;
   const CoglTextureDriver *texture_driver;
   const CoglWinsysVtable *winsys_vtable;
-  CoglWinsysVtableGetter custom_winsys_vtable_getter;
+  CoglCustomWinsysVtableGetter custom_winsys_vtable_getter;
   CoglWinsysID winsys_id_override;
   GList *constraints;
 
diff --git a/cogl/cogl/cogl-renderer.c b/cogl/cogl/cogl-renderer.c
index e6575d808..23cd3f81f 100644
--- a/cogl/cogl/cogl-renderer.c
+++ b/cogl/cogl/cogl-renderer.c
@@ -565,8 +565,8 @@ _cogl_renderer_choose_driver (CoglRenderer *renderer,
 /* Final connection API */
 
 void
-cogl_renderer_set_custom_winsys (CoglRenderer          *renderer,
-                                 CoglWinsysVtableGetter winsys_vtable_getter)
+cogl_renderer_set_custom_winsys (CoglRenderer                *renderer,
+                                 CoglCustomWinsysVtableGetter winsys_vtable_getter)
 {
   renderer->custom_winsys_vtable_getter = winsys_vtable_getter;
 }
@@ -575,10 +575,11 @@ static CoglBool
 connect_custom_winsys (CoglRenderer *renderer,
                        CoglError   **error)
 {
-  const CoglWinsysVtable *winsys = renderer->custom_winsys_vtable_getter();
+  const CoglWinsysVtable *winsys;
   CoglError *tmp_error = NULL;
   GString *error_message;
 
+  winsys = renderer->custom_winsys_vtable_getter (renderer);
   renderer->winsys_vtable = winsys;
 
   error_message = g_string_new ("");