Function blur

src/js/lib/canvg.js:2374–2384

(ctx, width, height, sigma)

			}
						
			function blur(ctx, width, height, sigma)
			{
				var srcData = ctx.getImageData(0, 0, width, height);
				var mask = make_fgauss(sigma);
				mask = normalize(mask);
				tmp = [];
				convolve_even(srcData.data, tmp, mask, width, height);
				convolve_even(tmp, srcData.data, mask, height, width);
				ctx.clearRect(0, 0, width, height);
				ctx.putImageData(srcData, 0, 0);
			}			
		
			this.apply = function(ctx, x, y, width, height) {
				// assuming x==0 && y==0 for now