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Diffstat (limited to 'source/blender/compositor/operations/COM_ReadBufferOperation.cc')
-rw-r--r--source/blender/compositor/operations/COM_ReadBufferOperation.cc133
1 files changed, 133 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.cc b/source/blender/compositor/operations/COM_ReadBufferOperation.cc
new file mode 100644
index 00000000000..2977e6685d2
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.cc
@@ -0,0 +1,133 @@
+/*
+ * 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_ReadBufferOperation.h"
+#include "COM_WriteBufferOperation.h"
+#include "COM_defines.h"
+
+ReadBufferOperation::ReadBufferOperation(DataType datatype)
+{
+ this->addOutputSocket(datatype);
+ this->m_single_value = false;
+ this->m_offset = 0;
+ this->m_buffer = nullptr;
+}
+
+void *ReadBufferOperation::initializeTileData(rcti * /*rect*/)
+{
+ return m_buffer;
+}
+
+void ReadBufferOperation::determineResolution(unsigned int resolution[2],
+ unsigned int preferredResolution[2])
+{
+ if (this->m_memoryProxy != nullptr) {
+ WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
+ operation->determineResolution(resolution, preferredResolution);
+ operation->setResolution(resolution);
+
+ /** \todo: may not occur!, but does with blur node */
+ if (this->m_memoryProxy->getExecutor()) {
+ this->m_memoryProxy->getExecutor()->setResolution(resolution);
+ }
+
+ m_single_value = operation->isSingleValue();
+ }
+}
+void ReadBufferOperation::executePixelSampled(float output[4],
+ float x,
+ float y,
+ PixelSampler sampler)
+{
+ if (m_single_value) {
+ /* write buffer has a single value stored at (0,0) */
+ m_buffer->read(output, 0, 0);
+ }
+ else {
+ switch (sampler) {
+ case COM_PS_NEAREST:
+ m_buffer->read(output, x, y);
+ break;
+ case COM_PS_BILINEAR:
+ default:
+ m_buffer->readBilinear(output, x, y);
+ break;
+ case COM_PS_BICUBIC:
+ m_buffer->readBilinear(output, x, y);
+ break;
+ }
+ }
+}
+
+void ReadBufferOperation::executePixelExtend(float output[4],
+ float x,
+ float y,
+ PixelSampler sampler,
+ MemoryBufferExtend extend_x,
+ MemoryBufferExtend extend_y)
+{
+ if (m_single_value) {
+ /* write buffer has a single value stored at (0,0) */
+ m_buffer->read(output, 0, 0);
+ }
+ else if (sampler == COM_PS_NEAREST) {
+ m_buffer->read(output, x, y, extend_x, extend_y);
+ }
+ else {
+ m_buffer->readBilinear(output, x, y, extend_x, extend_y);
+ }
+}
+
+void ReadBufferOperation::executePixelFiltered(
+ float output[4], float x, float y, float dx[2], float dy[2])
+{
+ if (m_single_value) {
+ /* write buffer has a single value stored at (0,0) */
+ m_buffer->read(output, 0, 0);
+ }
+ else {
+ const float uv[2] = {x, y};
+ const float deriv[2][2] = {{dx[0], dx[1]}, {dy[0], dy[1]}};
+ m_buffer->readEWA(output, uv, deriv);
+ }
+}
+
+bool ReadBufferOperation::determineDependingAreaOfInterest(rcti *input,
+ ReadBufferOperation *readOperation,
+ rcti *output)
+{
+ if (this == readOperation) {
+ BLI_rcti_init(output, input->xmin, input->xmax, input->ymin, input->ymax);
+ return true;
+ }
+ return false;
+}
+
+void ReadBufferOperation::readResolutionFromWriteBuffer()
+{
+ if (this->m_memoryProxy != nullptr) {
+ WriteBufferOperation *operation = this->m_memoryProxy->getWriteBufferOperation();
+ this->setWidth(operation->getWidth());
+ this->setHeight(operation->getHeight());
+ }
+}
+
+void ReadBufferOperation::updateMemoryBuffer()
+{
+ this->m_buffer = this->getMemoryProxy()->getBuffer();
+}