message: Correctly handle constant emissiveFactor with no emissiveTexture.
diff: @@ -1013,12 +1013,11 @@ namespace ospray {
  // We can emulate a constant colored emissive texture
  // XXX this is a workaround
  - auto constColor = false;
  + auto constColor = true;
  if (emissiveColor != vec3f(0.f) && mat.emissiveTexture.index != -1) {
  const auto &tex = model.textures[mat.emissiveTexture.index];
  const auto &img = model.images[tex.source];
  if (img.image.size() > 0) {
  - constColor = true;
  const auto *data = img.image.data();
  const vec3f color0 = vec3f(data[0], data[1], data[2]);
  @@ -1037,6 +1036,8 @@ namespace ospray {
  }
  i++;
  }
  + // Module the emissiveColor with the texture value.
  + emissiveColor *= color0;
  }
  }
  