@ -412,7 +412,7 @@ void
Context2d::blur(cairo_surface_t *surface, int radius) {
// Steve Hanov, 2009
// Released into the public domain.
--radius;
radius = radius * 0.57735f + 0.5f;
// get width, height
int width = cairo_image_surface_get_width( surface );
int height = cairo_image_surface_get_height( surface );