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Add -n option to encode bc3 which performs a BC3nm swizzle

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This commit is contained in:
Andrew Cassidy 2023-06-21 15:32:24 -07:00
parent 1c86b09ca0
commit 8509384bff
1 changed files with 15 additions and 3 deletions
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18
quicktex/cli/encode.py
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@ -36,7 +36,7 @@ def encode():
help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.",
)
@click.argument('filenames', nargs=-1, type=click.Path(exists=True, readable=True, dir_okay=False))
def encode_format(encoder, four_cc, flip, remove, suffix, output, filenames):
def encode_format(encoder, four_cc, flip, remove, suffix, output, filenames, swizzle=False):
path_pairs = common.path_pairs(filenames, output, suffix, '.dds')
with click.progressbar(
@ -48,6 +48,11 @@ def encode_format(encoder, four_cc, flip, remove, suffix, output, filenames):
if flip:
image = image.transpose(Image.FLIP_TOP_BOTTOM)
if swizzle:
bands = image.split()
one = Image.new('L', image.size, 0xFF)
image = Image.merge('RGBA', (one, bands[1], bands[1], bands[0]))
dds.encode(image, encoder, four_cc).save(outpath)
if remove:
@ -175,9 +180,16 @@ def encode_bc1(level, black, threecolor, **kwargs):
default=18,
help='Quality level to use. Higher values = higher quality, but slower.',
)
def encode_bc3(level, **kwargs):
@click.option(
'-n/-N',
'--normal/--no-normal',
type=bool,
default=False,
help='Perform a BC3nm swizzle, copying the red channel into the alpha [default: no-normal]',
)
def encode_bc3(level, normal, **kwargs):
"""Encode images to BC4 (RGBA, 8-bit interpolated alpha)."""
encode_format.callback(quicktex.s3tc.bc3.BC3Encoder(level), 'DXT5', **kwargs)
encode_format.callback(quicktex.s3tc.bc3.BC3Encoder(level), 'DXT5', swizzle=normal, **kwargs)
@click.command('bc4')