Fix T43908: Mask render bug, one pixel black line

This was a regression caused by attempts to fix T42844 and there were
some red-herrings which lead me to the wrong way to fix it. It's some
deeper issue than just interpolation offset, it's mainly how the node
resolution is being mapped to each other.

It could be actually a part of canvas awareness project..

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp b/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
index 35ab20fb122..23fba5a7999 100644
--- a/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
+++ b/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
@@ -54,10 +54,10 @@ void MultilayerColorOperation::executePixelSampled(float output[4], float x, flo
 					nearest_interpolation_color(this->m_buffer, NULL, output, x, y);
 					break;
 				case COM_PS_BILINEAR:
-					bilinear_interpolation_color(this->m_buffer, NULL, output, x - 0.5f, y - 0.5f);
+					bilinear_interpolation_color(this->m_buffer, NULL, output, x, y);
 					break;
 				case COM_PS_BICUBIC:
-					bicubic_interpolation_color(this->m_buffer, NULL, output, x - 0.5f, y - 0.5f);
+					bicubic_interpolation_color(this->m_buffer, NULL, output, x, y);
 					break;
 			}
 		}