| <!-- |
| Any copyright is dedicated to the Public Domain. |
| http://creativecommons.org/publicdomain/zero/1.0/ |
| --> |
| <!-- |
| This test verifies that feTurbulence creates a noise image that remains |
| anchored at the user space origin, not the filter region origin. The filter |
| region should act as a viewport into the anchored noise image. |
| --> |
| <svg xmlns="http://www.w3.org/2000/svg"> |
| <!-- |
| Place the filtered rect at (75, 75) in user space. |
| Make the filter region start at (-25, -25) from the top left corner of the rect. |
| Thus, the filter output should start at (50, 50). |
| --> |
| <filter id="f" x="-25%" y="-25%" width="100%" height="100%"> |
| <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1"></feTurbulence> |
| </filter> |
| <rect x="75" y="75" width="100" height="100" filter="url(#f)"/> |
| </svg> |
