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content / test / data / gpu / pixel_canvas_low_latency_webgl.html [blame]
<!DOCTYPE HTML>
<html>
<head>
<title>Low Latency WebGL Canvas Test: Should render a green box with an upward pointing white arrow</title>
<style type="text/css">
.nomargin {
margin: 0px auto;
}
</style>
<script>
let g_swapsBeforeAck = 15;
let g_canvas;
let g_gl;
function main()
{
g_canvas = document.getElementById("c");
g_gl = g_canvas.getContext("webgl", {desynchronized: true, preserveDrawingBuffer: true});
requestAnimationFrame(draw);
}
function draw()
{
g_gl.clearColor(1, 0, 0, 1);
g_gl.clear(g_gl.COLOR_BUFFER_BIT);
requestAnimationFrame(draw2);
}
function draw2()
{
// the last frame is what should be visible when test ends
g_gl.clearColor(0, 1, 0, 1);
g_gl.clear(g_gl.COLOR_BUFFER_BIT);
waitForFinish();
}
function waitForFinish()
{
if (g_swapsBeforeAck == 0) {
domAutomationController.send("SUCCESS");
} else {
g_swapsBeforeAck--;
window.requestAnimationFrame(waitForFinish);
}
}
</script>
</head>
<body onload="main()">
<div id="container" style="position:absolute; top:0px; left:0px">
<canvas id="c" width="100" height="100" class="nomargin" style="background-color:black"></canvas>
</div>
</body>
</html>