1 files changed, 70 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.cpp b/source/blender/compositor/operations/COM_ReadBufferOperation.cpp
new file mode 100644
index 00000000000..483a75a69d2
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+#include "COM_ReadBufferOperation.h"
+#include "COM_WriteBufferOperation.h"
+#include "COM_defines.h"
+
+ReadBufferOperation::ReadBufferOperation():NodeOperation() {
+	this->addOutputSocket(COM_DT_COLOR);
+	this->offset = 0;
+}
+
+void* ReadBufferOperation::initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers) {
+	return getInputMemoryBuffer(memoryBuffers);
+}
+
+void ReadBufferOperation::determineResolution(unsigned int resolution[], unsigned int preferredResolution[]) {
+	if (this->memoryProxy != NULL) {
+		WriteBufferOperation * operation = memoryProxy->getWriteBufferOperation();
+		operation->determineResolution(resolution, preferredResolution);
+		operation->setResolution(resolution);
+
+		/// @todo: may not occur!, but does with blur node
+		if (memoryProxy->getExecutor()) memoryProxy->getExecutor()->setResolution(resolution);
+	}
+}
+void ReadBufferOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	MemoryBuffer *inputBuffer = inputBuffers[this->offset];
+	if (inputBuffer) {
+		if (sampler == COM_PS_NEAREST) {
+			inputBuffer->read(color, x, y);
+		} else {
+			inputBuffer->readCubic(color, x, y);
+		}
+	}
+}
+
+void ReadBufferOperation::executePixel(float *color, float x, float y, float dx, float dy, MemoryBuffer *inputBuffers[]) {
+	MemoryBuffer *inputBuffer = inputBuffers[this->offset];
+	if (inputBuffer) {
+		inputBuffer->readEWA(color, x, y, dx, dy);
+	}
+}
+
+bool ReadBufferOperation::determineDependingAreaOfInterest(rcti * input, ReadBufferOperation* readOperation, rcti* output) {
+	if (this==readOperation) {
+		BLI_init_rcti(output, input->xmin, input->xmax, input->ymin, input->ymax);
+		return true;
+	}
+	return false;
+}