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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();
const bufferRead = device.createBuffer({
size: 4,
usage: GPUBufferUsage.MAP_READ | GPUBufferUsage.COPY_DST,
});
const bufferWrite = device.createBuffer({
size: 4,
usage: GPUBufferUsage.COPY_SRC,
mappedAtCreation: true,
});
new Float32Array(bufferWrite.getMappedRange()).set([1.0]);
bufferWrite.unmap();
const encoder = device.createCommandEncoder();
encoder.copyBufferToBuffer(bufferWrite, 0, bufferRead, 0, 4);
device.queue.submit([encoder.finish()]);
await bufferRead.mapAsync(GPUMapMode.READ);
try {
bufferRead.getMappedRange(0, 5);
ok(false, "mapped with size outside buffer should throw");
} catch (e) {
ok(
true,
"mapped with size outside buffer should throw OperationError"
);
}
try {
bufferRead.getMappedRange(4, 1);
ok(false, "mapped with offset outside buffer should throw");
} catch (e) {
ok(
true,
"mapped with offset outside buffer should throw OperationError"
);
}
const data = bufferRead.getMappedRange();
is(data.byteLength, 4, "array should be 4 bytes long");
const value = new Float32Array(data)[0];
ok(value == 1.0, "value == 1.0");
bufferRead.unmap();
is(data.byteLength, 0, "array should be detached after explicit unmap");
}
SimpleTest.waitForExplicitFinish();
testBody()
.catch(e => ok(false, "Unhandled exception " + e))
.finally(() => SimpleTest.finish());
</script>
</body>
</html>
|
