viewport: barebones to handle viewport compositing in gpu_viewport.c

source/blender/gpu/intern/gpu_viewport.c

@@ -0,0 +1,52 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2006 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s):
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/gpu/intern/gpu_viewport.c
+ *  \ingroup gpu
+ *
+ * System that manages viewport drawing.
+ */
+
+#include "GPU_viewport.h"
+
+#include "MEM_guardedalloc.h"
+
+struct GPUViewport {
+	float pad[4];
+};
+
+GPUViewport *GPU_viewport_create(void)
+{
+	GPUViewport *viewport = MEM_callocN(sizeof(GPUViewport), "GPUViewport");
+	return viewport;
+}
+
+void GPU_viewport_free(GPUViewport *viewport)
+{
+	MEM_freeN(viewport);
+}
+