зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.7 KiB
HTML
60 строки
1.7 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset='utf-8'>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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</head>
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<body>
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<script>
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ok(SpecialPowers.getBoolPref('dom.webgpu.enabled'), 'Pref should be enabled.');
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async function testBody() {
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const adapter = await navigator.gpu.requestAdapter();
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const device = await adapter.requestDevice();
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const bufferRead = device.createBuffer({ size:4, usage: GPUBufferUsage.MAP_READ | GPUBufferUsage.COPY_DST });
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const bufferWrite = device.createBuffer({ size:4, usage: GPUBufferUsage.COPY_SRC, mappedAtCreation: true });
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(new Float32Array(bufferWrite.getMappedRange())).set([1.0]);
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bufferWrite.unmap();
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const encoder = device.createCommandEncoder();
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encoder.copyBufferToBuffer(bufferWrite, 0, bufferRead, 0, 4);
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device.queue.submit([encoder.finish()]);
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await bufferRead.mapAsync(GPUMapMode.READ);
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try {
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bufferRead.getMappedRange(0, 5);
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ok(false, 'mapped with size outside buffer should throw');
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} catch(e) {
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ok(true, 'mapped with size outside buffer should throw OperationError');
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}
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try {
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bufferRead.getMappedRange(4, 1);
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ok(false, 'mapped with offset outside buffer should throw');
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} catch(e) {
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ok(true, 'mapped with offset outside buffer should throw OperationError');
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}
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const data = bufferRead.getMappedRange();
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is(data.byteLength, 4, 'array should be 4 bytes long');
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const value = (new Float32Array(data))[0];
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ok(value == 1.0, 'value == 1.0');
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bufferRead.unmap();
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is(data.byteLength, 0, 'array should be detached after explicit unmap');
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};
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SimpleTest.waitForExplicitFinish();
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testBody()
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.catch((e) => ok(false, "Unhandled exception " + e))
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.finally(() => SimpleTest.finish());
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</script>
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</body>
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</html>
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