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125 lines
3.9 KiB
Python
125 lines
3.9 KiB
Python
from __future__ import annotations
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import pytest
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from PIL import Image
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from PIL.VtfImagePlugin import (
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VtfPF,
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_closest_power,
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_get_mipmap_count,
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_get_texture_size,
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)
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from .helper import assert_image_equal, assert_image_similar
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@pytest.mark.parametrize(
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"size, expected_size",
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[
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(8, 8),
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(7, 8),
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(9, 8),
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(192, 256),
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(1, 1),
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(2000, 2048),
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],
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)
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def test_closest_power(size: int, expected_size: int) -> None:
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assert _closest_power(size) == expected_size
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@pytest.mark.parametrize(
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"size, expected_count",
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[
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((1, 1), 1),
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((2, 2), 2),
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((4, 4), 3),
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((8, 8), 4),
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((128, 128), 8),
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((256, 256), 9),
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((512, 512), 10),
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((1024, 1024), 11),
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((1024, 1), 11),
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],
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)
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def test_get_mipmap_count(size: tuple[int, int], expected_count: int) -> None:
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assert _get_mipmap_count(*size) == expected_count
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@pytest.mark.parametrize(
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"pixel_format, size, expected_size",
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[
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(VtfPF.DXT1, (16, 16), (16 * 16) // 2),
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(VtfPF.DXT1_ONEBITALPHA, (16, 16), (16 * 16) // 2),
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(VtfPF.DXT3, (16, 16), 16 * 16),
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(VtfPF.DXT5, (16, 16), 16 * 16),
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(VtfPF.BGR888, (16, 16), 16 * 16 * 3),
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(VtfPF.RGB888, (16, 16), 16 * 16 * 3),
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(VtfPF.RGBA8888, (16, 16), 16 * 16 * 4),
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(VtfPF.UV88, (16, 16), 16 * 16 * 2),
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(VtfPF.A8, (16, 16), 16 * 16),
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(VtfPF.I8, (16, 16), 16 * 16),
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(VtfPF.IA88, (16, 16), 16 * 16 * 2),
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],
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)
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def test_get_texture_size(
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pixel_format: VtfPF, size: tuple[int, int], expected_size: int
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) -> None:
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assert _get_texture_size(pixel_format, *size) == expected_size
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@pytest.mark.parametrize(
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"etalon_path, file_path, expected_mode, epsilon",
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[
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("Tests/images/vtf_i8.png", "Tests/images/vtf_i8.vtf", "L", 0.0),
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("Tests/images/vtf_a8.png", "Tests/images/vtf_a8.vtf", "RGBA", 0.0),
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("Tests/images/vtf_ia88.png", "Tests/images/vtf_ia88.vtf", "LA", 0.0),
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("Tests/images/vtf_uv88.png", "Tests/images/vtf_uv88.vtf", "RGB", 0.0),
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("Tests/images/vtf_rgb888.png", "Tests/images/vtf_rgb888.vtf", "RGB", 0.0),
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("Tests/images/vtf_bgr888.png", "Tests/images/vtf_bgr888.vtf", "RGB", 0.0),
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("Tests/images/vtf_dxt1.png", "Tests/images/vtf_dxt1.vtf", "RGBA", 3.0),
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("Tests/images/vtf_dxt1A.png", "Tests/images/vtf_dxt1A.vtf", "RGBA", 8.0),
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("Tests/images/vtf_rgba8888.png", "Tests/images/vtf_rgba8888.vtf", "RGBA", 0),
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],
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)
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def test_vtf_read(
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etalon_path: str, file_path: str, expected_mode: str, epsilon: float
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) -> None:
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with Image.open(file_path) as f:
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assert f.mode == expected_mode
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with Image.open(etalon_path) as e:
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converted_e = e.convert(expected_mode)
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if epsilon == 0:
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assert_image_equal(converted_e, f)
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else:
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assert_image_similar(converted_e, f, epsilon)
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@pytest.mark.parametrize(
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"pixel_format, file_path, expected_mode, epsilon",
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[
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(VtfPF.I8, "Tests/images/vtf_i8.png", "L", 0.0),
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(VtfPF.A8, "Tests/images/vtf_a8.png", "RGBA", 0.0),
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(VtfPF.IA88, "Tests/images/vtf_ia88.png", "LA", 0.0),
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(VtfPF.UV88, "Tests/images/vtf_uv88.png", "RGB", 0.0),
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(VtfPF.RGB888, "Tests/images/vtf_rgb888.png", "RGB", 0.0),
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(VtfPF.BGR888, "Tests/images/vtf_bgr888.png", "RGB", 0.0),
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(VtfPF.DXT1, "Tests/images/vtf_dxt1.png", "RGBA", 3.0),
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(VtfPF.RGBA8888, "Tests/images/vtf_rgba8888.png", "RGBA", 0),
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],
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)
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def test_vtf_save(
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pixel_format: VtfPF, file_path: str, expected_mode: str, epsilon: float, tmp_path
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) -> None:
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f: Image.Image = Image.open(file_path)
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out = (tmp_path / "tmp.vtf").as_posix()
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f.save(out, pixel_format=pixel_format)
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if pixel_format == VtfPF.DXT1:
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f = f.convert("RGBA")
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e = Image.open(out)
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assert e.mode == expected_mode
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if epsilon == 0:
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assert_image_equal(e, f)
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else:
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assert_image_similar(e, f, epsilon)
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