Thanks to m0fx from
Russian thread, I've got game files and dumped game executable. I've spent a few days working on this game, and now umodel can load Gears of War 4 textures. Nothing else is supported.
Why "a few days"? Because
1) Gears 4 has custom pak file format, with custom (lz4) compression
2) Assets are bundled into fewer files, so umodel reads bundle database and provides full file list to user. Bundles are "transparent", so user even wouldn't know that files are stitched together.
Now I need a few days of rest, most likely I won't work on GOW4 in nearest future - I've wasted a few working days (huge impact on my salary), so I need to compensate working time.
Important notes:
1. prefer to not extracting game pak files, provide to umodel path to pak files.
2. game should be set to "Gears of War 4" (may use command line -game=gears4)
3. umodel will look for BundleManifest.bin file and will crash (with meaningful error message) if it won't be found.
Please don't ask here about the following
1. Where to get the game files.
2. Upload any game files to this forum.
3. "Please support ... (something) ..., I need these assets ASAP".
4. Reporting any errors caused by incorrect use of umodel (not following "red" instructions above).