message: Fix logic bug when to warn in GeometricModel
diff: @@ -55,24 +55,21 @@ namespace ospray {
  indexData = getParamDataT<uint8_t>("index");
  size_t maxItems = geom->numPrimitives();
  - size_t minItems = 0; // without index, a single material / color is OK
  if (indexData && indexData->size() < maxItems) {
  postStatusMsg(1) << toString()
  << " not enough 'index' elements for geometry, clamping";
  }
  - if (indexData) {
  + if (indexData)
  maxItems = 256; // conservative, should actually go over the index
  - minItems = 1;
  - }
  - if (materialData && materialData->size() > minItems &&
  + if (materialData && materialData->size() > 1 &&
  materialData->size() < maxItems) {
  postStatusMsg(1) << toString()
  << " potentially not enough 'material' elements for "
  "geometry, clamping";
  }
  - if (colorData && colorData->size() > minItems &&
  + if (colorData && colorData->size() > 1 &&
  colorData->size() < maxItems) {
  postStatusMsg(1)
  << toString()
  