Export Texture2D swizzle problem for TokimekiGirlSide3 switch

[YuriSizuku]

Similar as previous issue #317.
I also find another game texture2d not correct as in DXT5 format.
Here's the sample and preview.

command_icon.assetbundle.gz

@isHarryh

[isHarryh]

After reading the C# code of AssetStudioMod, I found that it is the incorrect de-swizzle workflow in UnityPy that caused this problem, making DXT formats corrupted.

• Before the fix: original bytes -> convert to PIL -> convert to bytes -> de-swizzle -> convert to PIL
• After the fix: original bytes -> de-swizzle -> convert to PIL

Result:

This fix will be added to the previous PR.

If you discovered any other issues, feel free to send a feedback again.

[isHarryh]

Btw, the workflow of encoding swizzle images should also be corrected.

• Before the fix: padded image -> convert to bytes -> swizzle -> convert to PIL -> convert to bytes
• After the fix: padded image -> convert to bytes -> swizzle

[YuriSizuku]

After reading the C# code of AssetStudioMod, I found that it is the incorrect de-swizzle workflow in UnityPy that caused this problem, making DXT formats corrupted.

• Before the fix: original bytes -> convert to PIL -> convert to bytes -> de-swizzle -> convert to PIL
• After the fix: original bytes -> de-swizzle -> convert to PIL

Result:

This fix will be added to the previous PR.

If you discovered any other issues, feel free to send a feedback again.

Thank you for fixing the bug. But when I update the UnityPy to 1.22.4. It still has some minor problem. I found that the typing_extensions will not automaticly install by python -m pip install -e ..

failed No module named 'typing_extensions',2/477 assets/app/assetbundledatas/command_icon/c_command_14.png,-9176528817763424059,c_command_14,Texture2D
failed No module named 'typing_extensions',3/477 assets/app/assetbundledatas/command_icon/c_command_11.png,-9169374063337907823,c_command_11,Texture2D

[isHarryh]

Thank you for fixing the bug. But when I update the UnityPy to 1.22.4. It still has some minor problem. I found that the typing_extensions will not automaticly install by python -m pip install -e ..

failed No module named 'typing_extensions',2/477 assets/app/assetbundledatas/command_icon/c_command_14.png,-9176528817763424059,c_command_14,Texture2D
failed No module named 'typing_extensions',3/477 assets/app/assetbundledatas/command_icon/c_command_11.png,-9169374063337907823,c_command_11,Texture2D

That was a known issue of 1.22.4, introduced by 035cb09 . Btw, the previous PR is not fully merged. Please switch to patch-texture branch temporarily before the next version is released.

[YuriSizuku]

Ok, thank you for your explaination. I think this bug is mainly fixed.

[YuriSizuku]

@isHarryh I'm sorry to bother you. I found that it still has some problems for import the Texutre2D in dxt5 format.
Here's the sample.

manual.assetbundle.gz

import numpy as np
import UnityPy
from PIL import Image

env = UnityPy.load("downloads/tmgs4_Data/manual.assetbundle")

for obj in env.objects:
    if obj.type.name == "Texture2D":
        data = obj.read()
        img = np.array(data.image)
        img = 255 - img
        data.image = Image.fromarray(img)
        data.save()

failed memoryview assignment: lvalue and rvalue have different structures, 1/27 assets/app/assetbundledatas/lang/ja/ui/manual/uimanual01.png,-8770828120210540764,UImanual01,Texture2D

I think I have fixed this by #323

[isHarryh]

Are you still using 1.22.4? In my patch-texture branch, this error shouldn't appear.

Again, this fix is not fully merged by the previous PR. So just wait for next version.

@YuriSizuku

[YuriSizuku]

Are you still using 1.22.4? In my patch-texture branch, this error shouldn't appear.

Again, this fix is not fully merged by the previous PR. So just wait for next version.

@YuriSizuku

Yes, I have tried patch-texture branch. The import is successful and the view in assetstudio is fine. But the size is much bigger than before (77MB).
Also I tested the mod in game. The texture is very weried.

[isHarryh]

What do you mean "the size is much bigger than before" ? Do you mean the saved modified bundle file is too big? If so, did you set the pack="lz4" argument when saving?

Does the texture also getting weried in your PR #323 ?

[YuriSizuku]

What do you mean "the size is much bigger than before" ? Do you mean the saved modified bundle file is too big? If so, did you set the pack="lz4" argument when saving?

Does the texture also getting weried in your PR #323 ?

The same. But I have made a trick (delete m_PlatformBlob ) to disable swizzle to make it successfully.

for obj in env.objects:
    if obj.type.name == "Texture2D":
        data = obj.read()
        if data.m_Name == "UImanual05":
            data.m_PlatformBlob = []
            data.image = Image.open("downloads/tmgs4_Data/manual_chs/UImanual05.png")
            data.save()