cogl: Add a struct for winsys-specific data to CoglContext

This creates a separate struct to store the fields of the context that
are specific to the winsys. This is all stored in one file but ideally
this could work more like the CoglContextDriver struct and have a
different header for each winsys.

clutter/cogl/cogl/Makefile.am

@@ -75,6 +75,8 @@ cogl_public_h = \
 
 cogl_sources_c = \
 	$(srcdir)/winsys/cogl-winsys.h			\
+	$(srcdir)/winsys/cogl-context-winsys.h          \
+	$(srcdir)/winsys/cogl-context-winsys.c          \
 	$(srcdir)/cogl-handle.h 			\
 	$(srcdir)/cogl-context.h			\
 	$(srcdir)/cogl-context.c			\

clutter/cogl/cogl/cogl-context.c

@@ -43,6 +43,10 @@
 
 extern void
 _cogl_create_context_driver (CoglContext *context);
+extern void
+_cogl_create_context_winsys (CoglContext *context);
+extern void
+_cogl_destroy_context_winsys (CoglContext *context);
 
 static CoglContext *_context = NULL;
 static gboolean gl_is_indirect = FALSE;
@@ -72,6 +76,8 @@ cogl_create_context (void)
   _cogl_create_context_driver (_context);
   _cogl_features_init ();
 
+  _cogl_create_context_winsys (_context);
+
   _cogl_material_init_default_material ();
   _cogl_material_init_default_layers ();
 
@@ -209,6 +215,8 @@ _cogl_destroy_context (void)
   if (_context == NULL)
     return;
 
+  _cogl_destroy_context_winsys (_context);
+
   _cogl_destroy_texture_units ();
 
   _cogl_free_framebuffer_stack (_context->framebuffer_stack);

clutter/cogl/cogl/cogl-context.h

@@ -26,6 +26,7 @@
 
 #include "cogl-internal.h"
 #include "cogl-context-driver.h"
+#include "cogl-context-winsys.h"
 #include "cogl-primitives.h"
 #include "cogl-clip-stack.h"
 #include "cogl-matrix-stack.h"
@@ -167,6 +168,7 @@ typedef struct
   GSList           *texture_types;
 
   CoglContextDriver drv;
+  CoglContextWinsys winsys;
 } CoglContext;
 
 CoglContext *

clutter/cogl/cogl/winsys/cogl-context-winsys.c

@@ -0,0 +1,38 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2010 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cogl-context.h"
+
+void
+_cogl_create_context_winsys (CoglContext *context)
+{
+}
+
+void
+_cogl_destroy_context_winsys (CoglContext *context)
+{
+}

clutter/cogl/cogl/winsys/cogl-context-winsys.h

@@ -0,0 +1,32 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2010 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifndef __COGL_CONTEXT_WINSYS_H
+#define __COGL_CONTEXT_WINSYS_H
+
+typedef struct
+{
+  int stub;
+} CoglContextWinsys;
+
+#endif /* __COGL_CONTEXT_WINSYS_H */