1 files changed, 58 insertions, 0 deletions
diff --git a/source/blender/compositor/intern/COM_SingleThreadedOperation.cc b/source/blender/compositor/intern/COM_SingleThreadedOperation.cc
new file mode 100644
index 00000000000..5febf3802de
--- /dev/null
+++ b/source/blender/compositor/intern/COM_SingleThreadedOperation.cc
@@ -0,0 +1,58 @@
+/*
+ * 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.
+ *
+ * Copyright 2011, Blender Foundation.
+ */
+
+#include "COM_SingleThreadedOperation.h"
+
+SingleThreadedOperation::SingleThreadedOperation()
+{
+  this->m_cachedInstance = nullptr;
+  setComplex(true);
+}
+
+void SingleThreadedOperation::initExecution()
+{
+  initMutex();
+}
+
+void SingleThreadedOperation::executePixel(float output[4], int x, int y, void * /*data*/)
+{
+  this->m_cachedInstance->readNoCheck(output, x, y);
+}
+
+void SingleThreadedOperation::deinitExecution()
+{
+  deinitMutex();
+  if (this->m_cachedInstance) {
+    delete this->m_cachedInstance;
+    this->m_cachedInstance = nullptr;
+  }
+}
+void *SingleThreadedOperation::initializeTileData(rcti *rect)
+{
+  if (this->m_cachedInstance) {
+    return this->m_cachedInstance;
+  }
+
+  lockMutex();
+  if (this->m_cachedInstance == nullptr) {
+    //
+    this->m_cachedInstance = createMemoryBuffer(rect);
+  }
+  unlockMutex();
+  return this->m_cachedInstance;
+}