def to_dds(self):
header = DDSHeader(
dwHeight=self.height,
dwWidth=self.width,
dwMipMapCount=self.mipmap_count,
pixelfmt_dwFourCC=self.compression_format,
)
dds = DDS(header=header, data=self.dds_data)
dds.set_constants()
dds.set_variables()
return dds
def from_dds(cls, file_path):
dds = DDS(file_path=file_path)
mipmap_count = dds.header.dwMipMapCount
width = dds.header.dwWidth
height = dds.header.dwHeight
compression_format = dds.header.pixelfmt_dwFourCC
fixed_size_of_header = 40
start_offset = fixed_size_of_header + (mipmap_count * 4)
mipmap_offsets = cls.calculate_mipmap_offsets(mipmap_count, width,
height,
compression_format,
start_offset)
assert len(mipmap_offsets) == mipmap_count
mipmap_offsets = (c_uint * len(mipmap_offsets))(*mipmap_offsets)
dds_data = (c_byte * len(dds.data)).from_buffer(dds.data)
# TODO: Don't hardcode uknown floats (seem to be brightness values)
tex = cls(id_magic=cls.ID_MAGIC,
version=112,
revision=34,
mipmap_count=mipmap_count,
unk_byte_1=1,
unk_byte_2=0,
unk_byte_3=0,
width=width,
height=height,
compression_format=compression_format,
unk_float_1=0.76,
unk_float_2=0.76,
tex_unk_float_3=0.76,
unk_float_4=0,
mipmap_offsets=mipmap_offsets,
dds_data=dds_data)
return tex
def calculate_mipmap_offsets(mipmap_count, width, height, fmt, start_offset):
offsets = [start_offset]
current_offset = start_offset
for i in range(mipmap_count - 1):
size = DDS.calculate_mipmap_size(width, height, i, fmt)
current_offset += size
offsets.append(current_offset)
return offsets
def test_tex_calculate_mipmap_count(tex_file):
tex = Tex112(file_path=tex_file)
mipmap_count_from_file = tex.mipmap_count
mipmap_calculated = DDS.calculate_mipmap_count(tex.width, tex.height)
# There might be cases where tex don't have mipmaps?
assert mipmap_count_from_file == mipmap_calculated
def calculate_mipmap_offsets(mipmap_count, width, height, fmt,
start_offset):
offsets = [start_offset]
current_offset = start_offset
for i in range(mipmap_count - 1):
size = DDS.calculate_mipmap_size(width, height, i, fmt)
current_offset += size
offsets.append(current_offset)
return offsets
def to_dds(self):
header = DDSHeader(dwHeight=self.height,
dwWidth=self.width,
dwMipMapCount=self.mipmap_count,
pixelfmt_dwFourCC=self.compression_format)
dds = DDS(header=header, data=self.dds_data)
dds.set_constants()
dds.set_variables()
return dds
