Fix T40903: Rendering: Alpha Channel is Broken

1 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/compositor/operations/COM_RenderLayersProg.cpp b/source/blender/compositor/operations/COM_RenderLayersProg.cpp
index 7141dd7bf72..06f4f6d77cf 100644
--- a/source/blender/compositor/operations/COM_RenderLayersProg.cpp
+++ b/source/blender/compositor/operations/COM_RenderLayersProg.cpp
@@ -207,7 +207,12 @@ void RenderLayersAlphaProg::executePixelSampled(float output[4], float x, float
 		zero_v4(output);
 	}
 	else {
-		doInterpolation(output, x, y, sampler);
+		float temp[4];
+		doInterpolation(temp, x, y, sampler);
+		output[0] = temp[3];
+		output[1] = 0.0f;
+		output[2] = 0.0f;
+		output[3] = 0.0f;
 	}
 }