Here is the Renderer exporter

outputFile = '*.lxr'

def emit():
 lux.typeof.Sampler = sampler
 if sampler == 'Metropolis':
  lux.usevariance = useVariance
  lux.maxconsecrejects = maxConsecRejects
  lux.largemutationprob = float(largeMutationProb)
  lux.mutationrange = float(mutationRange)
 elif sampler == 'Random' or sampler == 'Low Discrepancy':
  lux.pixelsampler = pixelSampler
  lux.pixelsamples = pixelSamples
 elif sampler == 'ERPT':
  lux.initsamples = initSamples
  lux.chainlength = chainLength
  lux.mutationrange = mutationRange
 lux.typeof.SurfaceIntegrator = integrator
 lux.typeof.Accelerator = accelerator
 lux.typeof.PixelFilter = pixelFilter
 lux.xwidth = float(pixelFilterXWidth)
 lux.ywidth = float(pixelFilterYWidth)
 

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)