message: Fix cornercase frameAccumulationLimit==1
diff: @@ -72,6 +72,11 @@ namespace ospray {
  clearFB = newCamera || newRenderer || rChanged || cChanged;
  frameAccumulationLimit = child("frameAccumulationLimit").valueAs<int>();
  + // when frameAccumulationLimit is active, render at least 2 frames,
  + // otherwise the view is stuck showing the stale navigation framebuffer
  + // for no accumulation, disable the accumBuffer
  + if (frameAccumulationLimit >= 0)
  + frameAccumulationLimit = std::max(frameAccumulationLimit, 2);
  }
  void Frame::postCommit(RenderContext &)
  