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diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html
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+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html
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+<!DOCTYPE html>
+
+<body>
+ <p>
+ Test creating an ImageBitmap from the transferToImageBitmap of a webgl OffscreenCanvas, and then
+ transferred to an ImageBitmapRenderingContext.
+ </p>
+ <canvas id="canvas" width="300" height="300"></canvas>
+</body>
+<script>
+
+ function drawSquares(ctx) {
+ ctx.enable(ctx.SCISSOR_TEST);
+ ctx.scissor(0, 150, 150, 150);
+ ctx.clearColor(1, 0, 0, 1);
+ ctx.clear(ctx.COLOR_BUFFER_BIT);
+ ctx.scissor(150, 150, 300, 150);
+ ctx.clearColor(0, 1, 0, 1);
+ ctx.clear(ctx.COLOR_BUFFER_BIT);
+ ctx.scissor(0, 0, 150, 150);
+ ctx.clearColor(0, 0, 1, 1);
+ ctx.clear(ctx.COLOR_BUFFER_BIT);
+ }
+
+ async function runTest() {
+ const canvas = document.getElementById('canvas');
+ canvas.width = 300;
+ canvas.height = 300;
+ const ctx = canvas.getContext('webgl');
+ drawSquares(ctx);
+ }
+
+ runTest();
+
+</script>