LayoutTests/fast/canvas/webgl/webgl-layer-update.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <script>
     function doUpdate()
     {
         document.getElementsByTagName('canvas')[0].style.top = "60px";

         if (window.testRunner) {
             testRunner.displayAndTrackRepaints();
             testRunner.notifyDone();
         }
     }

     function init()
     {
         if (window.testRunner)
             doUpdate();
         else {
             // Delay canvas layer update if test runs without testRunner to
             // allow first layer update to be processed on UI side.
             window.setTimeout(doUpdate, 100);
         }
     }
 </script>
 <body onload="init()">
 <script>
 if (window.testRunner)
     testRunner.waitUntilDone();
 </script>
 <span id="description" style="color: white">
 This test is only useful as a pixel test. You should see red canvas of size 100x100.
 </span>
 <br>
 <style>
 canvas {
     outline: 1px solid blue;
 }
 body {
     background-color: darkblue;
 }
 </style>
 <script>

 if (window.testRunner) {
     testRunner.dumpAsText(true);
     document.getElementById("description").style.position = "absolute";
     document.getElementById("description").style.top = "-5000px";
 }

 var can = document.createElement('canvas');
 can.width = can.height = 100;
 can.style.position = "absolute";
 can.style.left = "40px";
 can.style.top = "40px";
 document.body.appendChild(can);
 var ctx = can.getContext("experimental-webgl");
 ctx.clearColor(1, 0, 0, 1);
 ctx.clear(ctx.COLOR_BUFFER_BIT);

 if (window.testRunner)
     testRunner.displayAndTrackRepaints();
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<script>
	function doUpdate()
	{
	document.getElementsByTagName('canvas')[0].style.top = "60px";

	if (window.testRunner) {
	testRunner.displayAndTrackRepaints();
	testRunner.notifyDone();
	}
	}

	function init()
	{
	if (window.testRunner)
	doUpdate();
	else {
	// Delay canvas layer update if test runs without testRunner to
	// allow first layer update to be processed on UI side.
	window.setTimeout(doUpdate, 100);
	}
	}
	</script>
	<body onload="init()">
	<script>
	if (window.testRunner)
	testRunner.waitUntilDone();
	</script>
	<span id="description" style="color: white">
	This test is only useful as a pixel test. You should see red canvas of size 100x100.
	</span>
	<br>
	<style>
	canvas {
	outline: 1px solid blue;
	}
	body {
	background-color: darkblue;
	}
	</style>
	<script>

	if (window.testRunner) {
	testRunner.dumpAsText(true);
	document.getElementById("description").style.position = "absolute";
	document.getElementById("description").style.top = "-5000px";
	}

	var can = document.createElement('canvas');
	can.width = can.height = 100;
	can.style.position = "absolute";
	can.style.left = "40px";
	can.style.top = "40px";
	document.body.appendChild(can);
	var ctx = can.getContext("experimental-webgl");
	ctx.clearColor(1, 0, 0, 1);
	ctx.clear(ctx.COLOR_BUFFER_BIT);

	if (window.testRunner)
	testRunner.displayAndTrackRepaints();
	</script>
	</body>
	</html>