A sample python script to process the PBR texture packs for the Radiance mod

process_pbr_pack.py

import shutil
import argparse
import zipfile
import os
from pathlib import Path

def move_files(root_dir, suffix, target_subfolder):
    root = Path(root_dir)
    count = 0

    for file_path in root.rglob(f'*{suffix}'):
        try:
            parts = file_path.parts
            if 'assets' not in parts or 'textures' not in parts:
                continue

            texture_dir = None
            for parent in file_path.parents:
                if parent.name == 'textures':
                    texture_dir = parent
                    break

            if texture_dir is None:
                continue

            if target_subfolder in file_path.relative_to(texture_dir).parts:
                continue

            rel_path = file_path.relative_to(texture_dir)
            dest_path = texture_dir / target_subfolder / rel_path

            dest_path.parent.mkdir(parents=True, exist_ok=True)
            shutil.move(str(file_path), str(dest_path))
            count += 1

        except Exception as e:
            print(f"  [Error] Processing {file_path.name}: {e}")

    return count

def zip_folder(folder_path, output_path):
    folder_path = Path(folder_path)
    with zipfile.ZipFile(output_path, 'w', zipfile.ZIP_DEFLATED) as zipf:
        for file in folder_path.rglob('*'):
            if file.is_file():
                zipf.write(file, arcname=file.relative_to(folder_path))

def main():
    parser = argparse.ArgumentParser(description="Unzip, organize textures, re-zip, and clean up.")
    parser.add_argument("zip_file", help="The path to the source .zip file")

    args = parser.parse_args()
    zip_path = Path(args.zip_file).resolve()

    if not zip_path.exists() or zip_path.suffix.lower() != '.zip':
        print(f"Error: File '{zip_path}' not found or is not a .zip file.")
        return

    temp_extract_dir = zip_path.parent / (zip_path.stem + "_temp_processing")
    output_zip_path = zip_path.parent / (zip_path.stem + "_processed.zip")

    try:
        print(f"1. Extracting '{zip_path.name}' to temporary folder...")
        if temp_extract_dir.exists():
            shutil.rmtree(temp_extract_dir)

        with zipfile.ZipFile(zip_path, 'r') as zip_ref:
            zip_ref.extractall(temp_extract_dir)

        print(f"2. Organizing textures inside temp folder...")
        s_count = move_files(temp_extract_dir, "_s.png", "specular")
        n_count = move_files(temp_extract_dir, "_n.png", "normal")
        print(f"   - Moved {s_count} specular maps.")
        print(f"   - Moved {n_count} normal maps.")

        print(f"3. Re-packing into '{output_zip_path.name}'...")
        zip_folder(temp_extract_dir, output_zip_path)

    except Exception as e:
        print(f"\n[CRITICAL ERROR]: {e}")
        print("Cleanup may not have finished due to error.")
        return

    finally:
        if temp_extract_dir.exists():
            print(f"4. Cleaning up temporary files...")
            shutil.rmtree(temp_extract_dir)

    print("-" * 30)
    print("Success! Process completed.")
    print(f"New file location: {output_zip_path}")

if __name__ == "__main__":
    main()

hey does anyone else have a weird issue where none of the resourcepacks you drop in the folder show up in the actual menu in minecraft itself?

Yes but I'm unsure how to fix it yet.

Step by step guide for noobs:

1. Download Python
2. Download the Python file by clicking Raw > Right click > Save as > Save
3. Create an Empty Folder. Put the Resource Pack .zip file you want to re-process in the folder as well as process_pbr_pack.py.
4. Right click an empty spot in the folder and Open Terminal. This will open Powershell.
5. In Powershell type: python process_pbr_pack.py "SPBR-18_7[Legacy].zip" <--- replace what's inside "" with whatever your Resoure Pack's file name is, including .zip.
6. Drag and Drop the new Processed Zip file into your resource packs folder.

Step by step guide for noobs:
5. In Powershell type: python process_pbr_pack.py "SPBR-18_7[Legacy].zip" <--- replace what's inside "" with whatever your Resoure
Pack's file name is, including .zip.

In step 5, you can also type python and then use the Tab key to select files in the folder in the correct order.

hey does anyone else have a weird issue where none of the resourcepacks you drop in the folder show up in the actual menu in minecraft itself?

same issue here with spbr and pixili seems to put the game stuck in the mojang loading screen