message: Use the bg color opacity as well for the background tile the owner sends
diff: @@ -114,7 +114,7 @@ namespace ospray {
  std::fill(tile.r, tile.r + TILE_SIZE * TILE_SIZE, bgColor.x);
  std::fill(tile.g, tile.g + TILE_SIZE * TILE_SIZE, bgColor.y);
  std::fill(tile.b, tile.b + TILE_SIZE * TILE_SIZE, bgColor.z);
  - std::fill(tile.a, tile.a + TILE_SIZE * TILE_SIZE, 1.0);
  + std::fill(tile.a, tile.a + TILE_SIZE * TILE_SIZE, bgColor.w);
  std::fill(tile.z, tile.z + TILE_SIZE * TILE_SIZE, std::numeric_limits<float>::infinity());
  fb->setTile(tile);
  }
  