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<!DOCTYPE html>
<body>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="resources/webxr_util.js"></script>
<canvas></canvas>
<script>
xr_promise_test(
"Ensure that XRPresentationContexts are properly transfered between session",
(t) => {
return XRTest.simulateDeviceConnection({ supportsImmersive:false })
.then( (controller) => {
return Promise.all([
navigator.xr.requestSession('inline'),
navigator.xr.requestSession('inline')
]).then((sessions) => {
t.step(() => {
assert_not_equals(sessions[0], null);
assert_not_equals(sessions[1], null);
});
const webglCanvas = document.getElementsByTagName('canvas')[0];
let gl = webglCanvas.getContext('webgl', {xrCompatible: true});
let outputContext = getOutputContext();
sessions[0].updateRenderState({
baseLayer: new XRWebGLLayer(sessions[0], gl),
outputContext: outputContext
});
return new Promise((resolve, reject) => {
sessions[0].requestAnimationFrame((time, xrFrame) => {
sessions[1].updateRenderState({
baseLayer: new XRWebGLLayer(sessions[1], gl),
outputContext: outputContext
});
t.step(() => {
// outputContext reassignment should not happen until the next frame is processed.
assert_equals(sessions[0].renderState.outputContext, outputContext);
assert_equals(sessions[1].renderState.outputContext, null);
});
sessions[1].requestAnimationFrame((time, xrFrame) => {
t.step(() => {
// Ensure the outputContext was properly reassigned from one context to the other.
assert_equals(sessions[0].renderState.outputContext, null);
assert_equals(sessions[1].renderState.outputContext, outputContext);
});
resolve();
});
});
});
});
});
});
</script>
</body>
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