pattlebass

# This is not _optimized_ for GDScript, but it works
# Adapted from: stackoverflow.com/q/21418892/understanding-super-fast-blur-algorithm

func fast_blur(img: Image, radius: int) -> Image:
	if radius < 1:
		return img
	
	var w: int = img.get_width()
	var h: int = img.get_height()
	var wm: int = w - 1