U
|
T ±d ã @ s d Z ddlZddlmZ ddlmZ ddlmZmZ ddl m
|
Z
|
dZ G d d
|
d
|
eZ d d Z G d d dejZdd Ze ejee¡ e ejddg¡ dS )a
|
A Pillow loader for .ftc and .ftu files (FTEX)
|
Jerome Leclanche <jerome@leclan.ch>
|
|
The contents of this file are hereby released in the public domain (CC0)
|
Full text of the CC0 license:
|
https://creativecommons.org/publicdomain/zero/1.0/
|
|
Independence War 2: Edge Of Chaos - Texture File Format - 16 October 2001
|
|
The textures used for 3D objects in Independence War 2: Edge Of Chaos are in a
|
packed custom format called FTEX. This file format uses file extensions FTC
|
and FTU.
|
* FTC files are compressed textures (using standard texture compression).
|
* FTU files are not compressed.
|
Texture File Format
|
The FTC and FTU texture files both use the same format. This
|
has the following structure:
|
{header}
|
{format_directory}
|
{data}
|
Where:
|
{header} = {
|
u32:magic,
|
u32:version,
|
u32:width,
|
u32:height,
|
u32:mipmap_count,
|
u32:format_count
|
}
|
|
* The "magic" number is "FTEX".
|
* "width" and "height" are the dimensions of the texture.
|
* "mipmap_count" is the number of mipmaps in the texture.
|
* "format_count" is the number of texture formats (different versions of the
|
same texture) in this file.
|
|
{format_directory} = format_count * { u32:format, u32:where }
|
|
The format value is 0 for DXT1 compressed textures and 1 for 24-bit RGB
|
uncompressed textures.
|
The texture data for a format starts at the position "where" in the file.
|
|
Each set of texture data in the file has the following structure:
|
{data} = format_count * { u32:mipmap_size, mipmap_size * { u8 } }
|
* "mipmap_size" is the number of bytes in that mip level. For compressed
|
textures this is the size of the texture data compressed with DXT1. For 24 bit
|
uncompressed textures, this is 3 * width * height. Following this are the image
|
bytes for that mipmap level.
|
|
Note: All data is stored in little-Endian (Intel) byte order.
|
é N)ÚIntEnum)ÚBytesIOé )ÚImageÚ ImageFile)Ú deprecates FTEXc @ s e Zd ZdZdZdS )ÚFormatr r N)Ú__name__Ú
|
__module__Ú __qualname__ÚDXT1Ú UNCOMPRESSED© r r úJd:\z\workplace\vscode\pyvenv\venv\Lib\site-packages\PIL/FtexImagePlugin.pyr @ s r c C s t di ¡ D ]X\}}| |¡r | t|d
} | |jkr t| | d|j d| || S q dt d| d}t|d S )NZFORMAT_é
|
Ú.zmodule 'z' has no attribute 'ú')r ÚitemsÚ
|
startswithÚlenÚ __members__r r ÚAttributeError)ÚnameÚenumÚprefixÚmsgr r r Ú __getattr__E s
|
|
r c @ s$ e Zd ZdZdZdd Zdd ZdS )Ú FtexImageFileZFTEXz Texture File Format (IW2:EOC)c C s0 t | j d¡s d}t|t d| j d¡¡ t d| j d¡¡| _t d| j d¡¡\}}d| _|dksptt d| j d¡¡\}}| j |¡ t d| j d¡¡\}| j |¡}|t
|
j krÞd| _d d
|
| j d dfg| _ n:|t
|
jkrd d
|
| j d d fg| _ ndt| }t|| j ¡ t|| _d S )Né znot an FTEX filez<iz<2ié ÚRGBr ZRGBAZbcn)r r r Úraw)r r r z$Invalid texture compression format: )Ú_acceptÚfpÚreadÚ SyntaxErrorÚstructÚunpackÚ_sizeÚmodeÚAssertionErrorÚseekr r ÚsizeZtiler ÚreprÚ
|
ValueErrorÚcloser )Úselfr Z mipmap_countZ format_countÚformatÚwhereZ mipmap_sizeÚdatar r r Ú_openT s*
|
|
zFtexImageFile._openc C s d S )Nr )r0 Úposr r r Ú load_seekt s zFtexImageFile.load_seekN)r r
|
r r1 Úformat_descriptionr4 r6 r r r r r P s r c C s | d d
t kS )Nr )ÚMAGIC)r r r r r" x s r" z.ftcz.ftu)Ú__doc__r& r r Úior Ú r r Z
|
_deprecater r8 r r r r" Z register_openr1 Zregister_extensionsr r r r Ú<module> s 5 (
|
