1 files changed, 19 insertions, 34 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
index 64c30fc417..b262f3b1d3 100644
--- a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
@@ -1,41 +1,27 @@
 <!DOCTYPE html>
 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
-<title>OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.gamma.tentative</title>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="/html/canvas/resources/canvas-tests.js"></script>
-
+<link rel="match" href="2d.filter.canvasFilterObject.componentTransfer.gamma.tentative-expected.html">
+<meta name=fuzzy content="maxDifference=0-2; totalPixels=0-500">
+<title>Canvas test: 2d.filter.canvasFilterObject.componentTransfer.gamma.tentative</title>
 <h1>2d.filter.canvasFilterObject.componentTransfer.gamma.tentative</h1>
 <p class="desc">Test pixels on CanvasFilter() componentTransfer with gamma type</p>
-
-
+<canvas id="canvas" width="100" height="100">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
 <script>
-var t = async_test("Test pixels on CanvasFilter() componentTransfer with gamma type");
-var t_pass = t.done.bind(t);
-var t_fail = t.step_func(function(reason) {
-    throw reason;
-});
-t.step(function() {
-
-  var canvas = new OffscreenCanvas(100, 50);
-  var ctx = canvas.getContext('2d');
-
-  // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
-  function getColor(inputColor, amplitude, exponent, offset) {
-      return [
-          Math.max(0, Math.min(1, Math.pow(inputColor[0]/255, exponent[0]) * amplitude[0] + offset[0])) * 255,
-          Math.max(0, Math.min(1, Math.pow(inputColor[1]/255, exponent[1]) * amplitude[1] + offset[1])) * 255,
-          Math.max(0, Math.min(1, Math.pow(inputColor[2]/255, exponent[2]) * amplitude[2] + offset[2])) * 255,
-      ];
-  }
+  const canvas = new OffscreenCanvas(100, 100);
+  const ctx = canvas.getContext('2d');
 
   const amplitudes = [2, 1.1, 0.5];
   const exponents = [5, 3, 1];
   const offsets = [0.25, 0, 0.5];
   ctx.filter = new CanvasFilter({name: 'componentTransfer',
-      funcR: {type: 'gamma', amplitude: amplitudes[0], exponent: exponents[0], offset: offsets[0]},
-      funcG: {type: 'gamma', amplitude: amplitudes[1], exponent: exponents[1], offset: offsets[1]},
-      funcB: {type: 'gamma', amplitude: amplitudes[2], exponent: exponents[2], offset: offsets[2]},
+      funcR: {type: 'gamma', amplitude: amplitudes[0],
+        exponent: exponents[0], offset: offsets[0]},
+      funcG: {type: 'gamma', amplitude: amplitudes[1],
+        exponent: exponents[1], offset: offsets[1]},
+      funcB: {type: 'gamma', amplitude: amplitudes[2],
+        exponent: exponents[2], offset: offsets[2]},
   });
 
   const inputColors = [
@@ -46,13 +32,12 @@ t.step(function() {
       [50, 68, 87],
   ];
 
-  for (const color of inputColors) {
-      let outputColor = getColor(color, amplitudes, exponents, offsets);
+  for (let i = 0 ; i < inputColors.length ; ++i) {
+      const color = inputColors[i];
       ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
-      ctx.fillRect(0, 0, 10, 10);
-      _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+      ctx.fillRect(i * 10, i * 10, 10, 10);
   }
-  t.done();
 
-});
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
 </script>