Function gaussianBlurParallel

Bounded parallel Gaussian blur using separate horizontal and vertical passes.

raster.parallel_rows.ParallelRowsResult gaussianBlurParallel(
  scope const(float)[] src,
  ulong w,
  ulong h,
  float sigma,
  ref float[] dst,
  ulong workers = 0LU,
  ulong chunk = 1LU
) @trusted;