1 files changed, 24 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_MovieClipOperation.cc b/source/blender/compositor/operations/COM_MovieClipOperation.cc
index d93a75407c4..e520b928edf 100644
--- a/source/blender/compositor/operations/COM_MovieClipOperation.cc
+++ b/source/blender/compositor/operations/COM_MovieClipOperation.cc
@@ -116,6 +116,18 @@ void MovieClipBaseOperation::executePixelSampled(float output[4],
   }
 }
 
+void MovieClipBaseOperation::update_memory_buffer_partial(MemoryBuffer *output,
+                                                          const rcti &area,
+                                                          Span<MemoryBuffer *> UNUSED(inputs))
+{
+  if (m_movieClipBuffer) {
+    output->copy_from(m_movieClipBuffer, area);
+  }
+  else {
+    output->fill(area, COM_COLOR_TRANSPARENT);
+  }
+}
+
 MovieClipOperation::MovieClipOperation() : MovieClipBaseOperation()
 {
   this->addOutputSocket(DataType::Color);
@@ -136,4 +148,16 @@ void MovieClipAlphaOperation::executePixelSampled(float output[4],
   output[0] = result[3];
 }
 
+void MovieClipAlphaOperation::update_memory_buffer_partial(MemoryBuffer *output,
+                                                           const rcti &area,
+                                                           Span<MemoryBuffer *> UNUSED(inputs))
+{
+  if (m_movieClipBuffer) {
+    output->copy_from(m_movieClipBuffer, area, 3, COM_DATA_TYPE_VALUE_CHANNELS, 0);
+  }
+  else {
+    output->fill(area, COM_VALUE_ZERO);
+  }
+}
+
 }  // namespace blender::compositor