Function testImmutableKernelTextureDoesNotLeak

test/internal/recycling.js:229–259

(precision, done, mode)

});

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

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