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<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css" />
</head>
<body>
<script>
ok(
SpecialPowers.getBoolPref("dom.webgpu.enabled"),
"Pref should be enabled."
);
async function testBody() {
const adapter = await navigator.gpu.requestAdapter();
const device = await adapter.requestDevice();
let buffer = device.createBuffer({
size: 48,
usage: GPUBufferUsage.MAP_READ,
mappedAtCreation: true,
});
let view1 = buffer.getMappedRange(16, 24);
function bad_overlap(start, size, complaint) {
SimpleTest.doesThrow(() => {
buffer.getMappedRange(start, size);
}, complaint);
}
bad_overlap(8, 16, "overlap start of prior");
bad_overlap(32, 16, "overlap end of prior");
bad_overlap(8, 40, "enclose prior");
bad_overlap(24, 8, "enclosed by prior");
// Not really an overlap, but this checks for a mistake in
// an early revision of the patch that introduces this test.
SimpleTest.doesThrow(() => {
buffer.getMappedRange(64, 8);
}, "offset beyond mapped range");
// should be fine
ok(
typeof buffer.getMappedRange(0, 16) == "object",
"no overlap before"
);
ok(typeof buffer.getMappedRange(40, 8) == "object", "no overlap after");
}
SimpleTest.waitForExplicitFinish();
testBody()
.catch(e => ok(false, "Unhandled exception " + e))
.finally(() => SimpleTest.finish());
</script>
</body>
</html>
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