message: Also use opacity of vertex.color and geometricModel
diff: -// Copyright 2009-2019 Intel Corporation
  +// Copyright 2009-2020 Intel Corporation
  // SPDX-License-Identifier: Apache-2.0
  // ispc device
  @@ -25,7 +25,7 @@ inline vec4f getSurfaceColor(const DifferentialGeometry &dg)
  }
  }
  - return make_vec4f(surfaceColor * make_vec3f(dg.color), opacity);
  + return make_vec4f(surfaceColor * make_vec3f(dg.color), opacity * dg.color.w);
  }
  inline float computeAO(const uniform SciVis *uniform self,
  