[lasem] tests: blur offset test.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 8293c891a4985043bb232d9eef94eeb41e58b8e9
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Thu Oct 18 11:37:46 2012 +0200

    tests: blur offset test.

 tests/data/svg/filter/blur-position-ref.png |  Bin 0 -> 1028 bytes
 tests/data/svg/filter/blur-position.svg     |   40 +++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/tests/data/svg/filter/blur-position-ref.png b/tests/data/svg/filter/blur-position-ref.png
new file mode 100644
index 0000000..5a65d77
Binary files /dev/null and b/tests/data/svg/filter/blur-position-ref.png differ
diff --git a/tests/data/svg/filter/blur-position.svg b/tests/data/svg/filter/blur-position.svg
new file mode 100644
index 0000000..551d68f
--- /dev/null
+++ b/tests/data/svg/filter/blur-position.svg
@@ -0,0 +1,40 @@
+<!--
+	Exercise blur algorithm.
+-->
+
+<svg  xmlns="http://www.w3.org/2000/svg"; xmlns:xlink="http://www.w3.org/1999/xlink"; width="45" height="45">
+  <defs>
+    <filter id="blur1" filterUnits="objectBoundingBox" x="-50%" y="-50%" width="200%" height="200%">
+      <feGaussianBlur stdDeviation="2"/>
+    </filter>
+    <filter id="blur2" filterUnits="objectBoundingBox" x="-50%" y="-50%" width="200%" height="200%">
+      <feGaussianBlur stdDeviation="1.2"/>
+    </filter>
+    <filter id="blur3" filterUnits="objectBoundingBox" x="-50%" y="-50%" width="200%" height="200%">
+      <feGaussianBlur stdDeviation="1"/>
+    </filter>
+    <filter id="blur4" filterUnits="objectBoundingBox" x="-50%" y="-50%" width="200%" height="200%">
+      <feGaussianBlur stdDeviation="2.2"/>
+    </filter>
+    <g id="square1">
+      <rect x="5" y="5" height="9.9" width="9.9" style="stroke:none; fill:blue; filter:url(#blur1)"/>
+      <path d="M5.5 0 L5.5 5 M0 5.5 L5 5.5 M14.5 15 L14.5 20 M15 14.5 L 20 14.5" stroke-width="1" stroke="black" fill="none" />
+    </g>
+    <g id="square2">
+      <rect x="5" y="5" height="9.9" width="9.9" style="stroke:none; fill:blue; filter:url(#blur2)"/>
+      <path d="M5.5 0 L5.5 5 M0 5.5 L5 5.5 M14.5 15 L14.5 20 M15 14.5 L 20 14.5" stroke-width="1" stroke="black" fill="none" />
+    </g>
+    <g id="square3">
+      <rect x="5" y="5" height="9.9" width="9.9" style="stroke:none; fill:blue; filter:url(#blur3)"/>
+      <path d="M5.5 0 L5.5 5 M0 5.5 L5 5.5 M14.5 15 L14.5 20 M15 14.5 L 20 14.5" stroke-width="1" stroke="black" fill="none" />
+    </g>
+    <g id="square4">
+      <rect x="5" y="5" height="9.9" width="9.9" style="stroke:none; fill:blue; filter:url(#blur4)"/>
+      <path d="M5.5 0 L5.5 5 M0 5.5 L5 5.5 M14.5 15 L14.5 20 M15 14.5 L 20 14.5" stroke-width="1" stroke="black" fill="none" />
+    </g>
+  </defs>
+  <use xlink:href="#square1" />
+  <use xlink:href="#square2" transform="translate(20,0)" />
+  <use xlink:href="#square3" transform="translate(0,20)"/>
+  <use xlink:href="#square4" transform="translate(20,20)"/>
+</svg>