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Read BC5_TYPELESS as BC5_UNORM

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This commit is contained in:
Andrew Murray 2021-05-19 21:16:12 +10:00
parent 1bb98974f8
commit f59ff6d55b
3 changed files with 13 additions and 18 deletions
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Tests/images/bc5_typeless.dds Normal file
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28
Tests/test_file_dds.py
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@ -10,6 +10,7 @@ from .helper import assert_image_equal, assert_image_equal_tofile
TEST_FILE_DXT1 = "Tests/images/dxt1-rgb-4bbp-noalpha_MipMaps-1.dds"
TEST_FILE_DXT3 = "Tests/images/dxt3-argb-8bbp-explicitalpha_MipMaps-1.dds"
TEST_FILE_DXT5 = "Tests/images/dxt5-argb-8bbp-interpolatedalpha_MipMaps-1.dds"
TEST_FILE_DX10_BC5_TYPELESS = "Tests/images/bc5_typeless.dds"
TEST_FILE_DX10_BC5_UNORM = "Tests/images/bc5_unorm.dds"
TEST_FILE_DX10_BC5_SNORM = "Tests/images/bc5_snorm.dds"
TEST_FILE_DX10_BC7 = "Tests/images/bc7-argb-8bpp_MipMaps-1.dds"
@ -60,30 +61,23 @@ def test_sanity_dxt5():
assert_image_equal_tofile(im, TEST_FILE_DXT5.replace(".dds", ".png"))
def test_dx10_bc5_unorm():
"""Check DX10 images can be opened"""
@pytest.mark.parametrize(
"image_path",
(TEST_FILE_DX10_BC5_TYPELESS, TEST_FILE_DX10_BC5_UNORM, TEST_FILE_DX10_BC5_SNORM),
)
def test_dx10_bc5(image_path):
"""Check DX10 BC5 images can be opened"""
with Image.open(TEST_FILE_DX10_BC5_UNORM) as im:
with Image.open(image_path) as im:
im.load()
assert im.format == "DDS"
assert im.mode == "RGB"
assert im.size == (256, 256)
assert_image_equal_tofile(im, TEST_FILE_DX10_BC5_UNORM.replace(".dds", ".png"))
def test_dx10_bc5_snorm():
"""Check DX10 images can be opened"""
with Image.open(TEST_FILE_DX10_BC5_SNORM) as im:
im.load()
assert im.format == "DDS"
assert im.mode == "RGB"
assert im.size == (256, 256)
assert_image_equal_tofile(im, TEST_FILE_DX10_BC5_SNORM.replace(".dds", ".png"))
assert_image_equal_tofile(
im, image_path.replace("typeless", "unorm").replace(".dds", ".png")
)
def test_dx10_bc7():

3
src/PIL/DdsImagePlugin.py
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@ -97,6 +97,7 @@ DXT5_FOURCC = 0x35545844
DXGI_FORMAT_R8G8B8A8_TYPELESS = 27
DXGI_FORMAT_R8G8B8A8_UNORM = 28
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29
DXGI_FORMAT_BC5_TYPELESS = 82
DXGI_FORMAT_BC5_UNORM = 83
DXGI_FORMAT_BC7_TYPELESS = 97
DXGI_FORMAT_BC7_UNORM = 98
@ -160,7 +161,7 @@ class DdsImageFile(ImageFile.ImageFile):
# ignoring flags which pertain to volume textures and cubemaps
dxt10 = BytesIO(self.fp.read(20))
dxgi_format, dimension = struct.unpack("<II", dxt10.read(8))
if dxgi_format == DXGI_FORMAT_BC5_UNORM:
if dxgi_format in (DXGI_FORMAT_BC5_TYPELESS, DXGI_FORMAT_BC5_UNORM):
self.pixel_format = "BC5"
n = 5
self.mode = "RGB"