Compositor: Full frame Scale node

Adds full frame implementation to this node operations.
No functional changes.

Includes a new operation method `init_data` used to initialize any data
needed after operations are linked and resolutions determined.
Once tiled implementation is removed `initExecution` may be renamed
to `init_rendering` and `init_data` to `init_execution`.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D11944

13 files changed, 265 insertions, 72 deletions

diff --git a/source/blender/compositor/intern/COM_ConstantFolder.cc b/source/blender/compositor/intern/COM_ConstantFolder.cc
index 15450572958..5b48ff8fc08 100644
--- a/source/blender/compositor/intern/COM_ConstantFolder.cc
+++ b/source/blender/compositor/intern/COM_ConstantFolder.cc
@@ -94,6 +94,7 @@ ConstantOperation *ConstantFolder::fold_operation(NodeOperation *operation)
   const DataType data_type = operation->getOutputSocket()->getDataType();
   MemoryBuffer fold_buf(data_type, first_elem_area_);
   Vector<MemoryBuffer *> input_bufs = get_constant_input_buffers(operation);
+  operation->init_data();
   operation->render(&fold_buf, {first_elem_area_}, input_bufs);
 
   MemoryBuffer *constant_buf = create_constant_buffer(data_type);
diff --git a/source/blender/compositor/intern/COM_Converter.cc b/source/blender/compositor/intern/COM_Converter.cc
index 18973bb5a00..1983eb190e2 100644
--- a/source/blender/compositor/intern/COM_Converter.cc
+++ b/source/blender/compositor/intern/COM_Converter.cc
@@ -518,7 +518,7 @@ void COM_convert_resolution(NodeOperationBuilder &builder,
     NodeOperation *first = nullptr;
     ScaleOperation *scaleOperation = nullptr;
     if (doScale) {
-      scaleOperation = new ScaleOperation(fromSocket->getDataType());
+      scaleOperation = new ScaleRelativeOperation(fromSocket->getDataType());
       scaleOperation->getInputSocket(1)->setResizeMode(ResizeMode::None);
       scaleOperation->getInputSocket(2)->setResizeMode(ResizeMode::None);
       first = scaleOperation;
diff --git a/source/blender/compositor/intern/COM_Enums.cc b/source/blender/compositor/intern/COM_Enums.cc
index d218de92544..2f20d2652ba 100644
--- a/source/blender/compositor/intern/COM_Enums.cc
+++ b/source/blender/compositor/intern/COM_Enums.cc
@@ -17,9 +17,28 @@
  */
 
 #include "COM_Enums.h"
+#include "BLI_rect.h"
 
 namespace blender::compositor {
 
+void expand_area_for_sampler(rcti &area, PixelSampler sampler)
+{
+  switch (sampler) {
+    case PixelSampler::Nearest:
+      break;
+    case PixelSampler::Bilinear:
+      area.xmax += 1;
+      area.ymax += 1;
+      break;
+    case PixelSampler::Bicubic:
+      area.xmin -= 1;
+      area.xmax += 2;
+      area.ymin -= 1;
+      area.ymax += 2;
+      break;
+  }
+}
+
 std::ostream &operator<<(std::ostream &os, const eCompositorPriority &priority)
 {
   switch (priority) {
diff --git a/source/blender/compositor/intern/COM_Enums.h b/source/blender/compositor/intern/COM_Enums.h
index 519e7df940e..7e5a1b73132 100644
--- a/source/blender/compositor/intern/COM_Enums.h
+++ b/source/blender/compositor/intern/COM_Enums.h
@@ -22,6 +22,8 @@
 
 #include <ostream>
 
+struct rcti;
+
 namespace blender::compositor {
 
 /**
@@ -85,6 +87,13 @@ enum class eWorkPackageType {
   CustomFunction = 1
 };
 
+enum class PixelSampler {
+  Nearest = 0,
+  Bilinear = 1,
+  Bicubic = 2,
+};
+void expand_area_for_sampler(rcti &area, PixelSampler sampler);
+
 std::ostream &operator<<(std::ostream &os, const eCompositorPriority &priority);
 std::ostream &operator<<(std::ostream &os, const eWorkPackageState &execution_state);
 
diff --git a/source/blender/compositor/intern/COM_ExecutionSystem.cc b/source/blender/compositor/intern/COM_ExecutionSystem.cc
index 60caf22be1b..cd2738fc2c7 100644
--- a/source/blender/compositor/intern/COM_ExecutionSystem.cc
+++ b/source/blender/compositor/intern/COM_ExecutionSystem.cc
@@ -112,6 +112,9 @@ void ExecutionSystem::set_operations(const Vector<NodeOperation *> &operations,
 void ExecutionSystem::execute()
 {
   DebugInfo::execute_started(this);
+  for (NodeOperation *op : m_operations) {
+    op->init_data();
+  }
   execution_model_->execute(*this);
 }
 
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index 048ed4c5d6e..ae12c444dc1 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -189,6 +189,25 @@ class MemoryBuffer {
     return m_buffer + get_coords_offset(x, y);
   }
 
+  void read_elem(int x, int y, float *out) const
+  {
+    memcpy(out, get_elem(x, y), m_num_channels * sizeof(float));
+  }
+
+  void read_elem_sampled(float x, float y, PixelSampler sampler, float *out) const
+  {
+    switch (sampler) {
+      case PixelSampler::Nearest:
+        this->read_elem(x, y, out);
+        break;
+      case PixelSampler::Bilinear:
+      case PixelSampler::Bicubic:
+        /* No bicubic. Current implementation produces fuzzy results. */
+        this->readBilinear(out, x, y);
+        break;
+    }
+  }
+
   /**
    * Get channel value at given coordinates.
    */
@@ -330,7 +349,7 @@ class MemoryBuffer {
   inline void wrap_pixel(float &x,
                          float &y,
                          MemoryBufferExtend extend_x,
-                         MemoryBufferExtend extend_y)
+                         MemoryBufferExtend extend_y) const
   {
     const float w = (float)getWidth();
     const float h = (float)getHeight();
@@ -427,7 +446,7 @@ class MemoryBuffer {
                            float x,
                            float y,
                            MemoryBufferExtend extend_x = MemoryBufferExtend::Clip,
-                           MemoryBufferExtend extend_y = MemoryBufferExtend::Clip)
+                           MemoryBufferExtend extend_y = MemoryBufferExtend::Clip) const
   {
     float u = x;
     float v = y;
diff --git a/source/blender/compositor/intern/COM_NodeOperation.cc b/source/blender/compositor/intern/COM_NodeOperation.cc
index 4e115cb3f2f..575e8446abe 100644
--- a/source/blender/compositor/intern/COM_NodeOperation.cc
+++ b/source/blender/compositor/intern/COM_NodeOperation.cc
@@ -100,6 +100,11 @@ void NodeOperation::setResolutionInputSocketIndex(unsigned int index)
 {
   this->m_resolutionInputSocketIndex = index;
 }
+
+void NodeOperation::init_data()
+{
+  /* Pass. */
+}
 void NodeOperation::initExecution()
 {
   /* pass */
diff --git a/source/blender/compositor/intern/COM_NodeOperation.h b/source/blender/compositor/intern/COM_NodeOperation.h
index fb9ec1e7a83..934007d25ce 100644
--- a/source/blender/compositor/intern/COM_NodeOperation.h
+++ b/source/blender/compositor/intern/COM_NodeOperation.h
@@ -75,12 +75,6 @@ enum class ResizeMode {
   Stretch = NS_CR_STRETCH,
 };
 
-enum class PixelSampler {
-  Nearest = 0,
-  Bilinear = 1,
-  Bicubic = 2,
-};
-
 class NodeOperationInput {
  private:
   NodeOperation *m_operation;
@@ -424,6 +418,12 @@ class NodeOperation {
     exec_system_ = system;
   }
 
+  /**
+   * Initializes operation data needed after operations are linked and resolutions determined. For
+   * rendering heap memory data use initExecution().
+   */
+  virtual void init_data();
+
   virtual void initExecution();
 
   /**
diff --git a/source/blender/compositor/nodes/COM_ScaleNode.cc b/source/blender/compositor/nodes/COM_ScaleNode.cc
index 50d2902f375..819d2e72f30 100644
--- a/source/blender/compositor/nodes/COM_ScaleNode.cc
+++ b/source/blender/compositor/nodes/COM_ScaleNode.cc
@@ -43,7 +43,7 @@ void ScaleNode::convertToOperations(NodeConverter &converter,
 
   switch (bnode->custom1) {
     case CMP_SCALE_RELATIVE: {
-      ScaleOperation *operation = new ScaleOperation();
+      ScaleRelativeOperation *operation = new ScaleRelativeOperation();
       converter.addOperation(operation);
 
       converter.mapInputSocket(inputSocket, operation->getInputSocket(0));
@@ -59,7 +59,7 @@ void ScaleNode::convertToOperations(NodeConverter &converter,
       scaleFactorOperation->setValue(context.getRenderPercentageAsFactor());
       converter.addOperation(scaleFactorOperation);
 
-      ScaleOperation *operation = new ScaleOperation();
+      ScaleRelativeOperation *operation = new ScaleRelativeOperation();
       converter.addOperation(operation);
 
       converter.mapInputSocket(inputSocket, operation->getInputSocket(0));
diff --git a/source/blender/compositor/nodes/COM_Stabilize2dNode.cc b/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
index fc72b48eca2..0262f653d1a 100644
--- a/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
+++ b/source/blender/compositor/nodes/COM_Stabilize2dNode.cc
@@ -43,7 +43,7 @@ void Stabilize2dNode::convertToOperations(NodeConverter &converter,
   MovieClip *clip = (MovieClip *)editorNode->id;
   bool invert = (editorNode->custom2 & CMP_NODEFLAG_STABILIZE_INVERSE) != 0;
 
-  ScaleOperation *scaleOperation = new ScaleOperation();
+  ScaleRelativeOperation *scaleOperation = new ScaleRelativeOperation();
   scaleOperation->setSampler((PixelSampler)editorNode->custom1);
   RotateOperation *rotateOperation = new RotateOperation();
   rotateOperation->setDoDegree2RadConversion(false);
diff --git a/source/blender/compositor/nodes/COM_TransformNode.cc b/source/blender/compositor/nodes/COM_TransformNode.cc
index cd12939ab43..e1deaf616a4 100644
--- a/source/blender/compositor/nodes/COM_TransformNode.cc
+++ b/source/blender/compositor/nodes/COM_TransformNode.cc
@@ -40,7 +40,7 @@ void TransformNode::convertToOperations(NodeConverter &converter,
   NodeInput *angleInput = this->getInputSocket(3);
   NodeInput *scaleInput = this->getInputSocket(4);
 
-  ScaleOperation *scaleOperation = new ScaleOperation();
+  ScaleRelativeOperation *scaleOperation = new ScaleRelativeOperation();
   converter.addOperation(scaleOperation);
 
   RotateOperation *rotateOperation = new RotateOperation();
diff --git a/source/blender/compositor/operations/COM_ScaleOperation.cc b/source/blender/compositor/operations/COM_ScaleOperation.cc
index f03b9fcf34d..2cb61ae746b 100644
--- a/source/blender/compositor/operations/COM_ScaleOperation.cc
+++ b/source/blender/compositor/operations/COM_ScaleOperation.cc
@@ -17,6 +17,7 @@
  */
 
 #include "COM_ScaleOperation.h"
+#include "COM_ConstantOperation.h"
 
 namespace blender::compositor {
 
@@ -52,13 +53,60 @@ ScaleOperation::ScaleOperation(DataType data_type) : BaseScaleOperation()
   this->m_inputXOperation = nullptr;
   this->m_inputYOperation = nullptr;
 }
+
+static std::optional<float> get_constant_scale(NodeOperation *op)
+{
+  if (op->get_flags().is_constant_operation) {
+    return ((ConstantOperation *)op)->get_constant_elem()[0];
+  }
+
+  return std::optional<float>();
+}
+
+float ScaleOperation::get_constant_scale_x()
+{
+  std::optional<float> scale_x = get_constant_scale(getInputOperation(1));
+  if (scale_x.has_value()) {
+    return scale_x.value() * get_relative_scale_x_factor();
+  }
+
+  return 1.0f;
+}
+
+float ScaleOperation::get_constant_scale_y()
+{
+  std::optional<float> scale_y = get_constant_scale(getInputOperation(2));
+  if (scale_y.has_value()) {
+    return scale_y.value() * get_relative_scale_y_factor();
+  }
+
+  return 1.0f;
+}
+
+BLI_INLINE float scale_coord(const int coord, const float center, const float relative_scale)
+{
+  return center + (coord - center) / relative_scale;
+}
+
+void ScaleOperation::scale_area(rcti &rect, float scale_x, float scale_y)
+{
+  rect.xmin = scale_coord(rect.xmin, m_centerX, scale_x);
+  rect.xmax = scale_coord(rect.xmax, m_centerX, scale_x);
+  rect.ymin = scale_coord(rect.ymin, m_centerY, scale_y);
+  rect.ymax = scale_coord(rect.ymax, m_centerY, scale_y);
+}
+
+void ScaleOperation::init_data()
+{
+  m_centerX = getWidth() / 2.0f;
+  m_centerY = getHeight() / 2.0f;
+}
+
 void ScaleOperation::initExecution()
 {
   this->m_inputOperation = this->getInputSocketReader(0);
   this->m_inputXOperation = this->getInputSocketReader(1);
   this->m_inputYOperation = this->getInputSocketReader(2);
-  this->m_centerX = this->getWidth() / 2.0;
-  this->m_centerY = this->getHeight() / 2.0;
 }
 
 void ScaleOperation::deinitExecution()
@@ -68,7 +116,52 @@ void ScaleOperation::deinitExecution()
   this->m_inputYOperation = nullptr;
 }
 
-void ScaleOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
+void ScaleOperation::get_area_of_interest(const int input_idx,
+                                          const rcti &output_area,
+                                          rcti &r_input_area)
+{
+  r_input_area = output_area;
+  if (input_idx != 0 || m_variable_size) {
+    return;
+  }
+
+  float scale_x = get_constant_scale_x();
+  float scale_y = get_constant_scale_y();
+  scale_area(r_input_area, scale_x, scale_y);
+  expand_area_for_sampler(r_input_area, (PixelSampler)m_sampler);
+}
+
+void ScaleOperation::update_memory_buffer_partial(MemoryBuffer *output,
+                                                  const rcti &area,
+                                                  Span<MemoryBuffer *> inputs)
+{
+  const MemoryBuffer *input_img = inputs[0];
+  MemoryBuffer *input_x = inputs[1];
+  MemoryBuffer *input_y = inputs[2];
+  const float scale_x_factor = get_relative_scale_x_factor();
+  const float scale_y_factor = get_relative_scale_y_factor();
+  BuffersIterator<float> it = output->iterate_with({input_x, input_y}, area);
+  for (; !it.is_end(); ++it) {
+    const float rel_scale_x = *it.in(0) * scale_x_factor;
+    const float rel_scale_y = *it.in(1) * scale_y_factor;
+    const float scaled_x = scale_coord(it.x, m_centerX, rel_scale_x);
+    const float scaled_y = scale_coord(it.y, m_centerY, rel_scale_y);
+    input_img->read_elem_sampled(scaled_x, scaled_y, (PixelSampler)m_sampler, it.out);
+  }
+}
+
+ScaleRelativeOperation::ScaleRelativeOperation() : ScaleOperation()
+{
+}
+
+ScaleRelativeOperation::ScaleRelativeOperation(DataType data_type) : ScaleOperation(data_type)
+{
+}
+
+void ScaleRelativeOperation::executePixelSampled(float output[4],
+                                                 float x,
+                                                 float y,
+                                                 PixelSampler sampler)
 {
   PixelSampler effective_sampler = getEffectiveSampler(sampler);
 
@@ -86,9 +179,9 @@ void ScaleOperation::executePixelSampled(float output[4], float x, float y, Pixe
   this->m_inputOperation->readSampled(output, nx, ny, effective_sampler);
 }
 
-bool ScaleOperation::determineDependingAreaOfInterest(rcti *input,
-                                                      ReadBufferOperation *readOperation,
-                                                      rcti *output)
+bool ScaleRelativeOperation::determineDependingAreaOfInterest(rcti *input,
+                                                              ReadBufferOperation *readOperation,
+                                                              rcti *output)
 {
   rcti newInput;
   if (!m_variable_size) {
@@ -115,34 +208,6 @@ bool ScaleOperation::determineDependingAreaOfInterest(rcti *input,
   return BaseScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
 }
 
-// SCALE ABSOLUTE
-ScaleAbsoluteOperation::ScaleAbsoluteOperation() : BaseScaleOperation()
-{
-  this->addInputSocket(DataType::Color);
-  this->addInputSocket(DataType::Value);
-  this->addInputSocket(DataType::Value);
-  this->addOutputSocket(DataType::Color);
-  this->setResolutionInputSocketIndex(0);
-  this->m_inputOperation = nullptr;
-  this->m_inputXOperation = nullptr;
-  this->m_inputYOperation = nullptr;
-}
-void ScaleAbsoluteOperation::initExecution()
-{
-  this->m_inputOperation = this->getInputSocketReader(0);
-  this->m_inputXOperation = this->getInputSocketReader(1);
-  this->m_inputYOperation = this->getInputSocketReader(2);
-  this->m_centerX = this->getWidth() / 2.0;
-  this->m_centerY = this->getHeight() / 2.0;
-}
-
-void ScaleAbsoluteOperation::deinitExecution()
-{
-  this->m_inputOperation = nullptr;
-  this->m_inputXOperation = nullptr;
-  this->m_inputYOperation = nullptr;
-}
-
 void ScaleAbsoluteOperation::executePixelSampled(float output[4],
                                                  float x,
                                                  float y,
@@ -202,8 +267,7 @@ bool ScaleAbsoluteOperation::determineDependingAreaOfInterest(rcti *input,
     newInput.ymax = this->getHeight();
     newInput.ymin = 0;
   }
-
-  return BaseScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+  return ScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
 }
 
 // Absolute fixed size
@@ -215,11 +279,12 @@ ScaleFixedSizeOperation::ScaleFixedSizeOperation() : BaseScaleOperation()
   this->m_inputOperation = nullptr;
   this->m_is_offset = false;
 }
-void ScaleFixedSizeOperation::initExecution()
+
+void ScaleFixedSizeOperation::init_data()
 {
-  this->m_inputOperation = this->getInputSocketReader(0);
-  this->m_relX = this->m_inputOperation->getWidth() / (float)this->m_newWidth;
-  this->m_relY = this->m_inputOperation->getHeight() / (float)this->m_newHeight;
+  const NodeOperation *input_op = getInputOperation(0);
+  this->m_relX = input_op->getWidth() / (float)this->m_newWidth;
+  this->m_relY = input_op->getHeight() / (float)this->m_newHeight;
 
   /* *** all the options below are for a fairly special case - camera framing *** */
   if (this->m_offsetX != 0.0f || this->m_offsetY != 0.0f) {
@@ -237,8 +302,8 @@ void ScaleFixedSizeOperation::initExecution()
 
   if (this->m_is_aspect) {
     /* apply aspect from clip */
-    const float w_src = this->m_inputOperation->getWidth();
-    const float h_src = this->m_inputOperation->getHeight();
+    const float w_src = input_op->getWidth();
+    const float h_src = input_op->getHeight();
 
     /* destination aspect is already applied from the camera frame */
     const float w_dst = this->m_newWidth;
@@ -267,6 +332,11 @@ void ScaleFixedSizeOperation::initExecution()
   /* *** end framing options *** */
 }
 
+void ScaleFixedSizeOperation::initExecution()
+{
+  this->m_inputOperation = this->getInputSocketReader(0);
+}
+
 void ScaleFixedSizeOperation::deinitExecution()
 {
   this->m_inputOperation = nullptr;
@@ -315,4 +385,38 @@ void ScaleFixedSizeOperation::determineResolution(unsigned int resolution[2],
   resolution[1] = this->m_newHeight;
 }
 
+void ScaleFixedSizeOperation::get_area_of_interest(const int input_idx,
+                                                   const rcti &output_area,
+                                                   rcti &r_input_area)
+{
+  BLI_assert(input_idx == 0);
+  UNUSED_VARS_NDEBUG(input_idx);
+  r_input_area.xmax = (output_area.xmax - m_offsetX) * this->m_relX;
+  r_input_area.xmin = (output_area.xmin - m_offsetX) * this->m_relX;
+  r_input_area.ymax = (output_area.ymax - m_offsetY) * this->m_relY;
+  r_input_area.ymin = (output_area.ymin - m_offsetY) * this->m_relY;
+  expand_area_for_sampler(r_input_area, (PixelSampler)m_sampler);
+}
+
+void ScaleFixedSizeOperation::update_memory_buffer_partial(MemoryBuffer *output,
+                                                           const rcti &area,
+                                                           Span<MemoryBuffer *> inputs)
+{
+  const MemoryBuffer *input_img = inputs[0];
+  PixelSampler sampler = (PixelSampler)m_sampler;
+  BuffersIterator<float> it = output->iterate_with({}, area);
+  if (this->m_is_offset) {
+    for (; !it.is_end(); ++it) {
+      const float nx = (it.x - this->m_offsetX) * this->m_relX;
+      const float ny = (it.y - this->m_offsetY) * this->m_relY;
+      input_img->read_elem_sampled(nx, ny, sampler, it.out);
+    }
+  }
+  else {
+    for (; !it.is_end(); ++it) {
+      input_img->read_elem_sampled(it.x * this->m_relX, it.y * this->m_relY, sampler, it.out);
+    }
+  }
+}
+
 }  // namespace blender::compositor
diff --git a/source/blender/compositor/operations/COM_ScaleOperation.h b/source/blender/compositor/operations/COM_ScaleOperation.h
index 2f9a7be92e6..b2f41a1e98a 100644
--- a/source/blender/compositor/operations/COM_ScaleOperation.h
+++ b/source/blender/compositor/operations/COM_ScaleOperation.h
@@ -18,11 +18,11 @@
 
 #pragma once
 
-#include "COM_NodeOperation.h"
+#include "COM_MultiThreadedOperation.h"
 
 namespace blender::compositor {
 
-class BaseScaleOperation : public NodeOperation {
+class BaseScaleOperation : public MultiThreadedOperation {
  public:
   void setSampler(PixelSampler sampler)
   {
@@ -46,7 +46,7 @@ class BaseScaleOperation : public NodeOperation {
 };
 
 class ScaleOperation : public BaseScaleOperation {
- private:
+ protected:
   SocketReader *m_inputOperation;
   SocketReader *m_inputXOperation;
   SocketReader *m_inputYOperation;
@@ -56,31 +56,58 @@ class ScaleOperation : public BaseScaleOperation {
  public:
   ScaleOperation();
   ScaleOperation(DataType data_type);
-  bool determineDependingAreaOfInterest(rcti *input,
-                                        ReadBufferOperation *readOperation,
-                                        rcti *output) override;
-  void executePixelSampled(float output[4], float x, float y, PixelSampler sampler) override;
 
+  void init_data() override;
   void initExecution() override;
   void deinitExecution() override;
-};
 
-class ScaleAbsoluteOperation : public BaseScaleOperation {
-  SocketReader *m_inputOperation;
-  SocketReader *m_inputXOperation;
-  SocketReader *m_inputYOperation;
-  float m_centerX;
-  float m_centerY;
+  void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
+  void update_memory_buffer_partial(MemoryBuffer *output,
+                                    const rcti &area,
+                                    Span<MemoryBuffer *> inputs) override;
+
+ protected:
+  virtual float get_relative_scale_x_factor() = 0;
+  virtual float get_relative_scale_y_factor() = 0;
+
+ private:
+  float get_constant_scale_x();
+  float get_constant_scale_y();
+  void scale_area(rcti &rect, float scale_x, float scale_y);
+};
 
+class ScaleRelativeOperation : public ScaleOperation {
  public:
-  ScaleAbsoluteOperation();
+  ScaleRelativeOperation();
+  ScaleRelativeOperation(DataType data_type);
   bool determineDependingAreaOfInterest(rcti *input,
                                         ReadBufferOperation *readOperation,
                                         rcti *output) override;
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler) override;
+  float get_relative_scale_x_factor() override
+  {
+    return 1.0f;
+  }
+  float get_relative_scale_y_factor() override
+  {
+    return 1.0f;
+  }
+};
 
-  void initExecution() override;
-  void deinitExecution() override;
+class ScaleAbsoluteOperation : public ScaleOperation {
+ public:
+  bool determineDependingAreaOfInterest(rcti *input,
+                                        ReadBufferOperation *readOperation,
+                                        rcti *output) override;
+  void executePixelSampled(float output[4], float x, float y, PixelSampler sampler) override;
+  float get_relative_scale_x_factor() override
+  {
+    return 1.0f / getWidth();
+  }
+  float get_relative_scale_y_factor() override
+  {
+    return 1.0f / getHeight();
+  }
 };
 
 class ScaleFixedSizeOperation : public BaseScaleOperation {
@@ -108,6 +135,7 @@ class ScaleFixedSizeOperation : public BaseScaleOperation {
                            unsigned int preferredResolution[2]) override;
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler) override;
 
+  void init_data() override;
   void initExecution() override;
   void deinitExecution() override;
   void setNewWidth(int width)
@@ -131,6 +159,11 @@ class ScaleFixedSizeOperation : public BaseScaleOperation {
     this->m_offsetX = x;
     this->m_offsetY = y;
   }
+
+  void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
+  void update_memory_buffer_partial(MemoryBuffer *output,
+                                    const rcti &area,
+                                    Span<MemoryBuffer *> inputs) override;
 };
 
 }  // namespace blender::compositor