fix translucent background overlays

Closes #2925
mapbox · Nov 3, 2016 · b6a1af9 · b6a1af9
1 parent 2fc3651
commit b6a1af9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/js/render/draw_background.js b/js/render/draw_background.js
@@ -10,7 +10,8 @@ function drawBackground(painter, sourceCache, layer) {
     const image = layer.paint['background-pattern'];
     const opacity = layer.paint['background-opacity'];
 
-    if (painter.isOpaquePass !== (!image && color[3] === 1)) return;
+    const isOpaque = !image && color[3] === 1 && opacity === 1;
+    if (painter.isOpaquePass !== isOpaque) return;
 
     // if the background layer is bottommost and not patterned,
     // we render it with gl.clearColor earlier