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Merge pull request #6 from radarhere/improved_dds

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Simplified tile creation
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REDxEYE 2023-10-21 18:41:01 +03:00 committed by GitHub
commit 2ca9adb79d
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5 changed files with 60 additions and 77 deletions
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0
Tests/images/mode-ati1.dds → Tests/images/ati1.dds
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0
Tests/images/mode-ati1.png → Tests/images/ati1.png
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Tests/images/mode-ati2.dds → Tests/images/ati2.dds
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6
Tests/test_file_dds.py
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@ -10,8 +10,8 @@ from .helper import assert_image_equal, assert_image_equal_tofile, hopper
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_ATI1 = "Tests/images/mode-ati1.dds"
TEST_FILE_ATI2 = "Tests/images/mode-ati2.dds"
TEST_FILE_ATI1 = "Tests/images/ati1.dds"
TEST_FILE_ATI2 = "Tests/images/ati2.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"
@ -347,7 +347,7 @@ def test_open(mode, test_file):
("LA", "Tests/images/uncompressed_la.png"),
("RGB", "Tests/images/hopper.png"),
("RGBA", "Tests/images/pil123rgba.png"),
("L", "Tests/images/mode-ati1.dds"),
("L", TEST_FILE_ATI1),
],
)
def test_save(mode, test_file, tmp_path):

131
src/PIL/DdsImagePlugin.py
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@ -348,14 +348,14 @@ class DdsImageFile(ImageFile.ImageFile):
masks = struct.unpack("<4I", header.read(16))
if flags & DDSD.CAPS:
header.seek(20, io.SEEK_CUR)
extents = (0, 0) + self.size
n = 0
rawmode = None
if pfflags & DDPF.RGB:
# Texture contains uncompressed RGB data
masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
if bitcount == 24:
rawmode = masks[0x00FF0000] + masks[0x0000FF00] + masks[0x000000FF]
self._mode = "RGB"
self.tile = [("raw", extents, 0, (rawmode[::-1], 0, 1))]
rawmode = masks[0x00FF0000] + masks[0x0000FF00] + masks[0x000000FF]
elif bitcount == 32 and pfflags & DDPF.ALPHAPIXELS:
self._mode = "RGBA"
rawmode = (
@ -364,61 +364,53 @@ class DdsImageFile(ImageFile.ImageFile):
+ masks[0x0000FF00]
+ masks[0x000000FF]
)
self.tile = [("raw", extents, 0, (rawmode[::-1], 0, 1))]
else:
msg = f"Unsupported bitcount {bitcount} for {pfflags}"
raise OSError(msg)
rawmode = rawmode[::-1]
elif pfflags & DDPF.ALPHA:
if bitcount == 8:
self._mode = "L"
self.tile = [("raw", extents, 0, ("L", 0, 1))]
else:
msg = f"Unsupported bitcount {bitcount} for {pfflags}"
raise OSError(msg)
elif pfflags & DDPF.LUMINANCE:
if bitcount == 8:
self._mode = "L"
self.tile = [("raw", extents, 0, ("L", 0, 1))]
elif bitcount == 16 and pfflags & DDPF.ALPHAPIXELS:
self._mode = "LA"
self.tile = [("raw", extents, 0, ("LA", 0, 1))]
else:
msg = f"Unsupported bitcount {bitcount} for {pfflags}"
raise OSError(msg)
elif pfflags & DDPF.PALETTEINDEXED8:
self._mode = "P"
self.palette = ImagePalette.raw("RGBA", self.fp.read(1024))
self.tile = [("raw", (0, 0) + self.size, 0, "L")]
elif pfflags & DDPF.FOURCC:
data_offs = header_size + 4
if fourcc == D3DFMT.DXT1:
self._mode = "RGBA"
self.pixel_format = "DXT1"
tile = Image._Tile("bcn", extents, data_offs, (1, self.pixel_format))
n = 1
elif fourcc == D3DFMT.DXT3:
self._mode = "RGBA"
self.pixel_format = "DXT3"
tile = Image._Tile("bcn", extents, data_offs, (2, self.pixel_format))
n = 2
elif fourcc == D3DFMT.DXT5:
self._mode = "RGBA"
self.pixel_format = "DXT5"
tile = Image._Tile("bcn", extents, data_offs, (3, self.pixel_format))
elif fourcc == D3DFMT.ATI1 or fourcc == D3DFMT.BC4U:
n = 3
elif fourcc in (D3DFMT.BC4U, D3DFMT.ATI1):
self._mode = "L"
self.pixel_format = "BC4"
tile = Image._Tile("bcn", extents, data_offs, (4, self.pixel_format))
n = 4
elif fourcc == D3DFMT.BC5S:
self._mode = "RGB"
self.pixel_format = "BC5S"
tile = Image._Tile("bcn", extents, data_offs, (5, self.pixel_format))
elif fourcc == D3DFMT.BC5U:
self._mode = "RGB"
self.pixel_format = "BC5U"
tile = Image._Tile("bcn", extents, data_offs, (5, self.pixel_format))
elif fourcc == D3DFMT.ATI2:
n = 5
elif fourcc in (D3DFMT.BC5U, D3DFMT.ATI2):
self._mode = "RGB"
self.pixel_format = "BC5"
tile = Image._Tile("bcn", extents, data_offs, (5, self.pixel_format))
n = 5
elif fourcc == D3DFMT.DX10:
data_offs += 20
# ignoring flags which pertain to volume textures and cubemaps
@ -431,53 +423,39 @@ class DdsImageFile(ImageFile.ImageFile):
):
self._mode = "RGBA"
self.pixel_format = "BC1"
tile = Image._Tile(
"bcn", extents, data_offs, (1, self.pixel_format)
)
n = 1
elif dxgi_format in (DXGI_FORMAT.BC5_TYPELESS, DXGI_FORMAT.BC5_UNORM):
self._mode = "RGB"
self.pixel_format = "BC5"
tile = Image._Tile(
"bcn", extents, data_offs, (5, self.pixel_format)
)
n = 5
elif dxgi_format == DXGI_FORMAT.BC5_SNORM:
self._mode = "RGB"
self.pixel_format = "BC5S"
tile = Image._Tile(
"bcn", extents, data_offs, (5, self.pixel_format)
)
n = 5
elif dxgi_format == DXGI_FORMAT.BC6H_UF16:
self._mode = "RGB"
self.pixel_format = "BC6H"
tile = Image._Tile(
"bcn", extents, data_offs, (6, self.pixel_format)
)
n = 6
elif dxgi_format == DXGI_FORMAT.BC6H_SF16:
self._mode = "RGB"
self.pixel_format = "BC6HS"
tile = Image._Tile(
"bcn", extents, data_offs, (6, self.pixel_format)
)
elif dxgi_format in (DXGI_FORMAT.BC7_TYPELESS, DXGI_FORMAT.BC7_UNORM):
n = 6
elif dxgi_format in (
DXGI_FORMAT.BC7_TYPELESS,
DXGI_FORMAT.BC7_UNORM,
DXGI_FORMAT.BC7_UNORM_SRGB,
):
self._mode = "RGBA"
self.pixel_format = "BC7"
tile = Image._Tile(
"bcn", extents, data_offs, (7, self.pixel_format)
)
elif dxgi_format == DXGI_FORMAT.BC7_UNORM_SRGB:
self._mode = "RGBA"
self.pixel_format = "BC7"
self.info["gamma"] = 1 / 2.2
tile = Image._Tile(
"bcn", extents, data_offs, (7, self.pixel_format)
)
n = 7
if dxgi_format == DXGI_FORMAT.BC7_UNORM_SRGB:
self.info["gamma"] = 1 / 2.2
elif dxgi_format in (
DXGI_FORMAT.R8G8B8A8_TYPELESS,
DXGI_FORMAT.R8G8B8A8_UNORM,
DXGI_FORMAT.R8G8B8A8_UNORM_SRGB,
):
self._mode = "RGBA"
tile = Image._Tile("raw", extents, 0, ("RGBA", 0, 1))
if dxgi_format == DXGI_FORMAT.R8G8B8A8_UNORM_SRGB:
self.info["gamma"] = 1 / 2.2
else:
@ -486,12 +464,16 @@ class DdsImageFile(ImageFile.ImageFile):
else:
msg = f"Unimplemented pixel format {repr(fourcc)}"
raise NotImplementedError(msg)
self.tile = [tile]
else:
msg = f"Unknown pixel format flags {repr(pfflags)}"
msg = f"Unknown pixel format flags {pfflags}"
raise NotImplementedError(msg)
extents = (0, 0) + self.size
if n:
self.tile = [Image._Tile("bcn", extents, data_offs, (n, self.pixel_format))]
else:
self.tile = [Image._Tile("raw", extents, 0, rawmode or self.mode)]
def load_seek(self, pos):
pass
@ -501,32 +483,34 @@ def _save(im, fp, filename):
msg = f"cannot write mode {im.mode} as DDS"
raise OSError(msg)
pixel_flags = DDPF.RGB
if im.mode == "RGB":
rgba_mask = struct.pack("<4I", 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000)
bit_count = 24
elif im.mode == "RGBA":
pixel_flags |= DDPF.ALPHAPIXELS
rgba_mask = struct.pack("<4I", 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000)
bit_count = 32
r, g, b, a = im.split()
im = Image.merge("RGBA", (a, r, g, b))
elif im.mode == "LA":
pixel_flags = DDPF.LUMINANCE | DDPF.ALPHAPIXELS
rgba_mask = struct.pack("<4I", 0x000000FF, 0x000000FF, 0x000000FF, 0x0000FF00)
bit_count = 16
else: # im.mode == "L"
alpha = im.mode[-1] == "A"
if im.mode[0] == "L":
pixel_flags = DDPF.LUMINANCE
rgba_mask = struct.pack("<4I", 0xFF000000, 0xFF000000, 0xFF000000, 0x00000000)
bit_count = 8
rawmode = im.mode
if alpha:
rgba_mask = [0x000000FF, 0x000000FF, 0x000000FF]
else:
rgba_mask = [0xFF000000, 0xFF000000, 0xFF000000]
else:
pixel_flags = DDPF.RGB
rawmode = im.mode[::-1]
rgba_mask = [0x00FF0000, 0x0000FF00, 0x000000FF]
if alpha:
r, g, b, a = im.split()
im = Image.merge("RGBA", (a, r, g, b))
if alpha:
pixel_flags |= DDPF.ALPHAPIXELS
rgba_mask.append(0xFF000000 if alpha else 0)
flags = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PITCH | DDSD.PIXELFORMAT
bit_count = len(im.getbands()) * 8
stride = (im.width * bit_count + 7) // 8
fp.write(
o32(DDS_MAGIC)
+ struct.pack(
"<IIIIIII",
"<7I",
124, # header size
flags, # flags
im.height,
@ -537,12 +521,11 @@ def _save(im, fp, filename):
)
+ struct.pack("11I", *((0,) * 11)) # reserved
# pfsize, pfflags, fourcc, bitcount
+ struct.pack("<IIII", 32, pixel_flags, 0, bit_count)
+ rgba_mask # dwRGBABitMask
+ struct.pack("<IIIII", DDSCAPS.TEXTURE, 0, 0, 0, 0)
+ struct.pack("<4I", 32, pixel_flags, 0, bit_count)
+ struct.pack("<4I", *rgba_mask) # dwRGBABitMask
+ struct.pack("<5I", DDSCAPS.TEXTURE, 0, 0, 0, 0)
)
mode = "LA" if im.mode == "LA" else im.mode[::-1]
ImageFile._save(im, fp, [Image._Tile("raw", (0, 0) + im.size, 0, (mode, 0, 1))])
ImageFile._save(im, fp, [Image._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
def _accept(prefix):