1 files changed, 8 insertions, 6 deletions

diff --git a/source/blender/compositor/operations/COM_FlipOperation.cpp b/source/blender/compositor/operations/COM_FlipOperation.cpp
index 3de2ae9dabc..7ff7d694fa8 100644
--- a/source/blender/compositor/operations/COM_FlipOperation.cpp
+++ b/source/blender/compositor/operations/COM_FlipOperation.cpp
@@ -44,8 +44,8 @@ void FlipOperation::deinitExecution()
 
 void FlipOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
 {
-	float nx = this->m_flipX ? this->getWidth() - 1 - x : x;
-	float ny = this->m_flipY ? this->getHeight() - 1 - y : y;
+	float nx = this->m_flipX ? ((int)this->getWidth() - 1) - x : x;
+	float ny = this->m_flipY ? ((int)this->getHeight() - 1) - y : y;
 	
 	this->m_inputOperation->readSampled(output, nx, ny, sampler);
 }
@@ -55,16 +55,18 @@ bool FlipOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOper
 	rcti newInput;
 	
 	if (this->m_flipX) {
-		newInput.xmax = (this->getWidth() - 1 - input->xmin) + 1;
-		newInput.xmin = (this->getWidth() - 1 - input->xmax) - 1;
+		const int w = (int)this->getWidth() - 1;
+		newInput.xmax = (w - input->xmin) + 1;
+		newInput.xmin = (w - input->xmax) - 1;
 	}
 	else {
 		newInput.xmin = input->xmin;
 		newInput.xmax = input->xmax;
 	}
 	if (this->m_flipY) {
-		newInput.ymax = (this->getHeight() - 1 - input->ymin) + 1;
-		newInput.ymin = (this->getHeight() - 1 - input->ymax) - 1;
+		const int h = (int)this->getHeight() - 1;
+		newInput.ymax = (h - input->ymin) + 1;
+		newInput.ymin = (h - input->ymax) - 1;
 	}
 	else {
 		newInput.ymin = input->ymin;