diff --git a/glworker.cpp b/glworker.cpp
index 7ea2a34..f72c0e1 100644
--- a/glworker.cpp
+++ b/glworker.cpp
@@ -406,6 +406,7 @@
     }
 
     src.alpha = layer.alpha / 255.0f;
+    src.premult = (layer.blending == DrmHwcBlending::kPreMult) ? 1.0f : 0.0f;
   }
 }