Kiwi tea at 19:10, 17 September 2012

2012-09-17T19:10:19Z

Delphy: Auto-inserted from WakkaWikki

2004-11-10T18:31:13Z

Auto-inserted from WakkaWikki

New page

{{OldWikiEntry}} ==This file type uses the Resource Collection format [[RCOL]].==

'''TXTR file format:'''
The texture files can store a variable size image, alpha channel and MIP maps in a variety of formats.
The basic layout is:

''TXTR Header''
''''
''MIP Image Header''
''MIP Image Data''
''''
''MIP Image Header''
''MIP Image Data''
''''
''.''
''.''
''.''
''''
''Tail data''

Header is a standard [[RCOL]] header
the texture block is coded as follows
<pre>
1 $len(0xa)
10 "cImageData"
4 0x1c4a276c
4 modifier(7,9)
insert [[cSGResource]] here
4 texture width
4 texture height
4 format code

4 mipmapLevels
2 unknown 0
2 unknown (3f80,4040,4000)
4 outerloopCount
4 unknown(0)
if modifier=9
1 unknown(0)
endif
loop(outerloopCount)
case(modifier)
7:
innerloopCount=mipmapCount
9:
4 innerloopCount
endcase
loop(innerloopCount)
1 dataType
case (dataType)
0:
4 imagedata size
n data
1:
1 $len
n $(name of a LIFO file)
endcase
endloop
case (modifier)
7:
4 unknown(00 00 00 ff)
9:
4 unknown
4 unknown(00 00 21 41)
endcase
endloop
</pre>
MIP maps are stored smallest to largest and generally start with a 1x1 image and can be

put into a DDS container.
Some TXTR files do not offer MIP maps.

Image data
The size is based on the image format.
If this is a MIP, read the data size from the header and figure out the correct

dimensions,
they will be proportional to the width/height found in the TXTR header.
See the Image format codes for the data size per pixel formula.

Image format codes
0=???
1=Raw A8 R8 G8 B8, total data size = width*height*4
2=Raw R8 G8 B8, total data size = width*height*3
3=???
4=DXT1 RGB (no alpha bit) total data size = width*height/2
5=DXT3 ARGB, total data size = width*height
6=Raw Grayscale, total data size = width*height
7... = ???

You can see the Java code snip used to decode DXT1 & DXT3 data blocks here:
http:''home.carolina.rr.com/dhmtb/snip.java
Use it in any way you see fit. [[Category:Modding]]

@@ Line 1: / Line 1: @@
-{{OldWikiEntry}} ==This file type uses the Resource Collection format [[RCOL]].==
+{{OldWikiEntry}}
@@ Line 94: / Line 96: @@
 You can see the Java code snip used to decode DXT1 & DXT3 data blocks here:
 http:''home.carolina.rr.com/dhmtb/snip.java
-Use it in any way you see fit. [[Category:Modding]]
+Use it in any way you see fit.

TXTR - Revision history

Kiwi tea at 19:10, 17 September 2012

Delphy: Auto-inserted from WakkaWikki