Source code
Revision control
Copy as Markdown
Other Tools
Test Info: Warnings
- This test has a WPT meta file that disables it given conditions:
- (os == "win") and not swgl : https://bugzilla.mozilla.org/show_bug.cgi?id=1847850
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/manual/filter/offscreencanvas.filter.html - WPT Dashboard Interop Dashboard
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="offscreencanvas.filter.js"></script>
<script>
var patternCanvas = createPatternCanvas();
var getOffscreenContextForFilter = function(filter, pattern) {
var oc = new OffscreenCanvas(80, 80);
var offCtx = oc.getContext('2d');
offCtx.filter = filter;
offCtx.drawImage(pattern, 5, 5);
offCtx.drawImage(pattern, 25, 25);
offCtx.drawImage(pattern, 45, 45);
return offCtx;
};
var testFilter = function(filter) {
var offCtx = getOffscreenContextForFilter(filter, patternCanvas);
var ctx = getRegularContextForFilter(filter, patternCanvas);
var offImageData = offCtx.getImageData(0, 0, 80, 80).data;
var imageData = ctx.getImageData(0, 0, 80, 80).data;
matchImageDataResults(offImageData, imageData, filter);
};
generate_tests(testFilter, [filters]);
</script>