chromium/src/third_party/blink/web_tests/wpt_internal/webgpu/webgpu/api/operation/buffers/map_detach.spec.js

/**
 * AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
 **/ export const description = '';
import { makeTestGroup } from '../../../../common/framework/test_group.js';
import { GPUTest } from '../../../gpu_test.js';

class F extends GPUTest {
  checkDetach(buffer, arrayBuffer, unmap, destroy) {
    const view = new Uint8Array(arrayBuffer);
    this.expect(arrayBuffer.byteLength === 4);
    this.expect(view.length === 4);

    if (unmap) buffer.unmap();
    if (destroy) buffer.destroy();

    this.expect(arrayBuffer.byteLength === 0, 'ArrayBuffer should be detached');
    this.expect(view.byteLength === 0, 'ArrayBufferView should be detached');
  }
}

export const g = makeTestGroup(F);

g.test('mapAsync,write')
  .params([
    { unmap: true, destroy: false }, //
    { unmap: false, destroy: true },
    { unmap: true, destroy: true },
  ])
  .fn(async t => {
    const buffer = t.device.createBuffer({ size: 4, usage: GPUBufferUsage.MAP_WRITE });
    await buffer.mapAsync(GPUMapMode.WRITE);
    const arrayBuffer = buffer.getMappedRange();
    t.checkDetach(buffer, arrayBuffer, t.params.unmap, t.params.destroy);
  });

g.test('mapAsync,read')
  .params([
    { unmap: true, destroy: false }, //
    { unmap: false, destroy: true },
    { unmap: true, destroy: true },
  ])
  .fn(async t => {
    const buffer = t.device.createBuffer({ size: 4, usage: GPUBufferUsage.MAP_READ });
    await buffer.mapAsync(GPUMapMode.READ);
    const arrayBuffer = buffer.getMappedRange();
    t.checkDetach(buffer, arrayBuffer, t.params.unmap, t.params.destroy);
  });

g.test('create_mapped')
  .params([
    { unmap: true, destroy: false },
    { unmap: false, destroy: true },
    { unmap: true, destroy: true },
  ])
  .fn(async t => {
    const desc = {
      mappedAtCreation: true,
      size: 4,
      usage: GPUBufferUsage.MAP_WRITE,
    };

    const buffer = t.device.createBuffer(desc);
    const arrayBuffer = buffer.getMappedRange();

    const view = new Uint8Array(arrayBuffer);
    t.expect(arrayBuffer.byteLength === 4);
    t.expect(view.length === 4);

    if (t.params.unmap) buffer.unmap();
    if (t.params.destroy) buffer.destroy();
    t.expect(arrayBuffer.byteLength === 0, 'ArrayBuffer should be detached');
    t.expect(view.byteLength === 0, 'ArrayBufferView should be detached');
  });