Function compare_render

vispy/testing/rendered_array_tester.py:19–47

Compare an expected original array with the rendered result. Parameters ---------- orig_data Expected output result array. This will be converted to an RGBA array to be compared against the rendered data. rendered_data Actual rendered result as an RGBA 8-bit

(
        orig_data: ArrayLike,
        rendered_data: ArrayLike,
        previous_render: Optional[ArrayLike] = None,
        atol: Optional[float] = 1.0
)

def compare_render(
        orig_data: ArrayLike,
        rendered_data: ArrayLike,
        previous_render: Optional[ArrayLike] = None,
        atol: Optional[float] = 1.0
):
    """Compare an expected original array with the rendered result.

    Parameters
    ----------
    orig_data
        Expected output result array. This will be converted to an RGBA array
        to be compared against the rendered data.
    rendered_data
        Actual rendered result as an RGBA 8-bit unsigned array.
    previous_render
        Previous instance of a render that the current render should not be
        equal to.
    atol
        Absolute tolerance to be passed to
        :func:`numpy.testing.assert_allclose`.

    """
    predicted = make_rgba(orig_data)
    np.testing.assert_allclose(rendered_data.astype(float), predicted.astype(float), atol=atol)
    if previous_render is not None:
        # assert not allclose
        pytest.raises(AssertionError, np.testing.assert_allclose,
                      rendered_data, previous_render, atol=10)


def max_for_dtype(input_dtype: DtypeLike):