#put in same folder as texconv.exe
#https://github.com/microsoft/DirectXTex/wiki/Texconv

import os
import subprocess

# Set the output directory
output_dir = 'images/insignia'

# Create the output directory if it doesn't exist
if not os.path.exists(output_dir):
    os.makedirs(output_dir)

# Iterate over all PNG files in the current directory
for filename in os.listdir('.'):
    if filename.endswith('.png'):
        # Prepare the command to convert PNG to BC3 DXT5 with mipmaps
        input_file = filename
        output_file = os.path.join(output_dir, f'{os.path.splitext(filename)[0]}.dds')

        # Command to run Texconv
        command = [
            'Texconv.exe',  # Change this to the path if Texconv.exe is not in the same folder
            '-f', 'dxt5',  # Set compression format: DXT5 (BC3, for RGBA images)
            '-m', '9',  # Generate 9 levels of mipmaps
            '-o', output_dir,  # Output directory
            '--separate-alpha', #separate alpha
            input_file  # Input file
        ]

        # Run the command
        print(f'Converting {input_file} to {output_file}...')
        subprocess.run(command)

print('Conversion completed!')