Warning

This pack is by no means a stable fix to make all 1.19.2 packs work perfectly on 1.12.2. You may experience crashes and rendering glitches with certain packs. ResourceFix will not load on vanilla 1.12.2, and requires OptiFine as the game will refuse to load the pack.

In addition, the assets from vanilla 1.19.2 are required to load this pack. Directions on doing that are given below.

ResourceFix

ResourceFix is a resource pack for 1.12.2 that makes it possible to load resource packs from 1.17 - 1.19.2.

Pack Order

The following pack order is required for ResourceFix to function correctly:

ResourceFix
Packs to be loaded with ResourceFix (includes Programmer Art)
1.19.2 assets (2nd to bottom)
Default (bottom)

ResourceFix may override a few things, and in that case if you're feeling adventurous you can try loading a pack on top of ResourceFix. ResourceFix handles most things correctly, and loading a pack on top of ResourceFix (especially one that messes with models or blockstates) can lead to crashes and instability.

Prerequisites

ResourceFix does NOT provide the vanilla models and textures. If you load ResourceFix with nothing below it, you will see missing models or the game will potentially crash.

Directions

To get ResourceFix working with the vanilla 1.19.2 assets:

Locate a 1.19.2 jar file. If you are on Windows this may be in %appdata%/.minecraft/versions/1.19.2/, on macOS it may be in /Library/Application Support/minecraft/versions/1.19.2/, and on Linux it may be in ~/.minecraft/versions/1.19.2/
Open the jar file and find the assets folder
Open the resource pack folder for your 1.12.2 instance
Make a new folder with any name you choose
Copy the assets folder into the new folder you made
Find a pack.mcmeta file from any pack and copy it into that folder
Load the pack under ResourceFix

To get Programmer Art:

Go back to the main folder where you have Minecraft installed (should be .minecraft or minecraft)
Open assets/indexes/1.19.json
Search through the file for "programmer" and find the hash. Remember the first 5 letters and numbers
Go up one level and find the objects folder
Enter the directory that matches the first two characters of the hash
Locate the file that matches the hash
Copy it into your instance's resource packs folder and rename it to have the .zip extension

State of the project

At the moment, ResourceFix only covers block models. Item models will be supported in the future, and most packs that change things such GUI textures and fonts should work.

Entity models such as chests are bugged, and I plan to use OptiFine's custom entity model system to fix them at some point.

While this pack should work with most packs and has worked with many of the packs I have tested, if the game crashes look at the game log and replace the blockstate file with one from vanilla.

Unresolvable Issues

Redstone, mushroom blocks and glass panes use the models from 1.12.2 but are redirected to use the modern textures, so any models from a pack loaded with ResourceFix that affect those blocks will not work.

CTM will also never work, as 1.12.2 and 1.13+ use different names and models can't affect those names.

Since custom models can't be defined for liquids, water and lava will use the texture from 1.12.2.

Results

As stated earlier, ResourceFix is only meant to target block models and textures at the moment. These results do not factor in any rendering glitches or bugs with items/entities.

🟢 means that the loaded pack appeared to work perfectly fine

🟡 means that there were some minor issues

🔴 means that there were major issues such as crashes or the loaded pack not functioning at all

Bare Bones 🟢
Stay True 🟢
XRay Ultimate 🔴
Patrix 32x 🔴
Faithful 32x and 64x 🟢
Golden Days 🟢
UltimaCraft v1.4 🟡 (saplings use missing model)

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