message: Minor cleanup and correct optDenoiser behavior
diff: @@ -86,7 +86,7 @@ ospOffline specific parameters:
  write (or not) final converged image
  -ms --maxsamples [int] (default 1024)
  maximum number of samples
  - -mv --minvariance [float] (default 2q)
  + -mv --minvariance [float] (default 2)
  minimum variance to which image will converge
  )text"
  <<
  @@ -179,29 +179,32 @@ R"text(
  root->child("navFrameBuffer")["size"] = fb->size();
  renderer->child("spp") = 1;
  - // Only set denoiser state if denoiser is available
  + // Only enable denoiser if command line enables it and it's available
  if (!fb->hasChild("useDenoiser"))
  optDenoiser = 0;
  -
  + else {
  if (optDenoiser)
  fb->child("useDenoiser") = true;
  + else
  + fb->child("useDenoiser") = false;
  + }
  do {
  - // Clear accum
  + // Clear accum (by marking camera as modified)
  root->child("camera").markAsModified();
  size_t numSamples = 1;
  do {
  // use snprintf to pad number with leading 0s for sorting
  char str[16];
  - snprintf(str, sizeof(str), "_%4.4lu", numSamples);
  + snprintf(str, sizeof(str), "_spp_%4.4lu", numSamples);
  suffix = str;
  root->renderFrame();
  variance = renderer->getLastVariance();
  - // use snprintf to format variance percentage
  - snprintf(str, sizeof(str), "_v%2.2fq", variance);
  + // use snprintf to format variance
  + snprintf(str, sizeof(str), "_v_%2.2f", variance);
  suffix += str;
  // Output images for power of 2 samples
  