1 files changed, 82 insertions, 0 deletions
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLSync.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLSync.cpp
new file mode 100644
index 00000000000..d54b3232067
--- /dev/null
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLSync.cpp
@@ -0,0 +1,82 @@
+/*
+ * ***** 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) 2015, Blender Foundation
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Blender Foundation.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include "glew-mx.h"
+
+#include <stdio.h>
+
+#include "RAS_OpenGLSync.h"
+
+RAS_OpenGLSync::RAS_OpenGLSync()
+    :m_sync(NULL)
+{
+}
+
+RAS_OpenGLSync::~RAS_OpenGLSync()
+{
+	Destroy();
+}
+
+bool RAS_OpenGLSync::Create(RAS_SYNC_TYPE type)
+{
+	if (m_sync) {
+		printf("RAS_OpenGLSync::Create(): sync already exists, destroy first\n");
+		return false;
+	}
+	if (type != RAS_SYNC_TYPE_FENCE) {
+		printf("RAS_OpenGLSync::Create(): only RAS_SYNC_TYPE_FENCE are currently supported\n");
+		return false;
+	}
+	if (!GLEW_ARB_sync) {
+		printf("RAS_OpenGLSync::Create(): ARB_sync extension is needed to create sync object\n");
+		return false;
+	}
+	m_sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+	if (!m_sync) {
+		printf("RAS_OpenGLSync::Create(): glFenceSync() failed");
+		return false;
+	}
+	return true;
+}
+
+void RAS_OpenGLSync::Destroy()
+{
+	if (m_sync) {
+		glDeleteSync(m_sync);
+		m_sync = NULL;
+	}
+}
+
+void RAS_OpenGLSync::Wait()
+{
+	if (m_sync) {
+		// this is needed to ensure that the sync is in the GPU
+		glFlush();
+		// block until the operation have completed
+		glWaitSync(m_sync, 0, GL_TIMEOUT_IGNORED);
+	}
+}