message: Fix directions for KHR_lights_punctual
diff: @@ -431,17 +431,12 @@ namespace ospray {
  std::make_pair("position", std::make_pair(lightPos, false)));
  }
  - if (type == "distant" || type == "hdri" || type == "spot") {
  - auto lightDir = xfmVector(xfms.top(), vec3f(0, 0, 1));
  + if (type == "distant" || type == "spot" || type == "sunSky") {
  + auto lightDir = xfmVector(xfms.top(), vec3f(0, 0, -1));
  propMap.insert(
  std::make_pair("direction", std::make_pair(lightDir, false)));
  }
  - if (type == "sunSky") {
  - auto sunDir = xfmVector(xfms.top(), vec3f(0, -1, 0));
  - propMap.insert(std::make_pair("direction", std::make_pair(sunDir, true)));
  - }
  -
  if (type == "hdri") {
  auto upDir = xfmVector(xfms.top(), vec3f(0, 1, 0));
  propMap.insert(std::make_pair("up", std::make_pair(upDir, false)));
  