https://www.posetteforever.com/viewtopic.php?f=23&t=3991&p=45322#p45322
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Nik
Sunday, 19 January 2020, 09:44 PM

Mesh Format Viewer / Conversion.
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I usually use 3DOC, which is free to personal use, but I've upgraded to 'paid' for more mesh export options.

3DOC can be a fussy eater. It struggles with some MMD PMD / PMX file-builds, and often scrambles MMD .X prop files. I've discovered that recent Windows updates have 'orphaned' its PNG texture handling, causing module execution exceptions when there's an Alpha Channel. With no easy fix, as the module's author no longer supports that code. 'Despaired of Windows', perhaps ??

Sadly, there are many MMD PNG textures with Alpha channels, as that environment lacks support for separate bit-masks...

I'm slowly learning how to 'rip'  such Alpha channel data to BMP for use in Poser. 

Must ask Irfan if his free Irfan View has obscure options that will let me paint a PNG's Alpha channel without altering the RGB image...

D'uh...

More-or-less by accident, I found free open3mod viewer, which is not as versatile as 3DOC, but can do a fair range of mesh conversions, is much less fussy and does not choke on Alpha channels.

https://www.open3mod.com/

Comes in x32 & x64 flavours...
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May I also recommend free XnView (personal) which can 'unpeel' and export PSD layers, should you not have Photoshop or grok GIMP...


