Function testImmutableKernelMappedTexturesDoesNotLeak

test/internal/recycling.js:301–351

(precision, done, mode)

});

function testImmutableKernelMappedTexturesDoesNotLeak(precision, done, mode) {
  const gpu = new GPU({ mode });
  function saveValue(value) {
    return value;
  }
  const toTextures = gpu.createKernelMap([saveValue],function(value1, value2) {
    saveValue(value1[this.thread.x]);
    return value2[this.thread.x];
  }, {
    output: [1],
    pipeline: true,
    immutable: true,
    precision,
  });
  const { result: one, 0: two } = toTextures([1], [2]);
  assert.equal(one.texture._refs, 2); // one's texture will be used in two places at first, in one and toTexture.texture
  assert.equal(two.texture._refs, 2); // one's texture will be used in two places at first, in one and toTexture.mappedTextures[0]
  assert.equal(toTextures.texture.texture, one.texture); // very important, a clone was mode, but not a deep clone
  assert.equal(toTextures.mappedTextures[0].texture, two.texture); // very important, a clone was mode, but not a deep clone
  assert.notEqual(one, toTextures.texture);
  assert.notEqual(one, toTextures.mappedTextures[0]);
  const { result: three, 0: four } = toTextures([3], [4]);
  assert.equal(one.texture._refs, 1); // was tracked on toTexture.texture, and deleted
  assert.equal(two.texture._refs, 1); // was tracked on toTexture.mappedTextures[0], and deleted
  assert.equal(toTextures.texture.texture, three.texture);
  assert.equal(toTextures.mappedTextures[0].texture, four.texture);
  assert.notEqual(toTextures.texture.texture, one.texture);
  assert.notEqual(toTextures.mappedTextures[0].texture, two.texture);
  assert.equal(three.texture._refs, 2);
  assert.equal(four.texture._refs, 2);
  one.delete();
  two.delete();
  three.delete();
  four.delete();
  assert.equal(one.texture._refs, 0);
  assert.equal(two.texture._refs, 0);
  assert.equal(three.texture._refs, 1); // still used by toTexture.texture
  assert.equal(four.texture._refs, 1); // still used by toTexture.mappedTextures[0]
  three.delete(); // already deleted
  four.delete(); // already deleted
  assert.equal(three.texture._refs, 1); // still used by toTexture
  assert.equal(four.texture._refs, 1); // still used by toTexture
  gpu.destroy()
    .then(() => {
      assert.equal(one.texture._refs, 0);
      assert.equal(two.texture._refs, 0);
      assert.equal(three.texture._refs, 0);
      assert.equal(four.texture._refs, 0);
      done();
    });
}

test('immutable unsigned precision kernel.mappedTextures does not leak auto', t => {
  testImmutableKernelMappedTexturesDoesNotLeak('unsigned', t.async());