1 files changed, 10 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cpp b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cpp
index 040a0315d69..5ddf15f7684 100644
--- a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cpp
+++ b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.cpp
@@ -31,12 +31,14 @@ MovieClipAttributeOperation::MovieClipAttributeOperation() : NodeOperation()
 	this->m_valueSet = false;
 	this->m_framenumber = 0;
 	this->m_attribute = MCA_X;
+	this->m_invert = false;
 }
 
 void MovieClipAttributeOperation::executePixelSampled(float output[4],
                                                       float /*x*/, float /*y*/,
                                                       PixelSampler /*sampler*/)
 {
+	/* TODO(sergey): This code isn't really thread-safe. */
 	if (!this->m_valueSet) {
 		float loc[2], scale, angle;
 		loc[0] = 0.0f;
@@ -61,6 +63,14 @@ void MovieClipAttributeOperation::executePixelSampled(float output[4],
 				this->m_value = loc[1];
 				break;
 		}
+		if (this->m_invert) {
+			if (this->m_attribute != MCA_SCALE) {
+				this->m_value = -this->m_value;
+			}
+			else {
+				this->m_value = 1.0f / this->m_value;
+			}
+		}
 		this->m_valueSet = true;
 	}
 	output[0] = this->m_value;