gvlsq

inline void
Bloom(bitmap Bitmap,
      f32 LuminanceThreshold,
      int Radius, f32 Sigma)
{
    // NOTE: An implementation of bloom, a glow artifact found in some
    // real world photography.
        
    bitmap BloomedAreas = CloneBitmap(Bitmap);
    Threshold(BloomedAreas, LuminanceThreshold, ThresholdType_Chromatic);