message: intial volume step based on volume epsilon instead of renderer epsilon
diff: @@ -119,8 +119,7 @@ vec4f SciVisRenderer_computeVolumeInterval(const SciVisRenderer *uniform rendere
  volume->intersectAdaptive(volume, ray, samplingRate);
  else
  volume->intersect(volume,ray);
  - tBegin = tBegin+renderer->super.epsilon;
  - // const uniform float oneOverQuality = (1.f/quality);
  + tBegin = tBegin+renderer->volumeEpsilon;
  while (ray.t0 < tEnd && intervalColor.w < maxOpacity)
  {
  // Sample the volume at the hit point in world coordinates.
  