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Added Packing Scripts
The glbAnalyzer.py is a work in progress Most are, but they all have their purposes
1 parent 033773c commit d21cdb1

16 files changed

+1169
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lines changed

‎.gitignore

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@@ -8,7 +8,7 @@ lerna-debug.log*
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.pnpm-debug.log*
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dev
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packing
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packing/FBX2glTF.exe
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Source/js/pxlRooms/CabinEnvironment
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Source/js/pxlRooms/VoidEnvironment
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‎packing/KTX-Software-4.0.0-win64.exe

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‎packing/fbx2gltf.js

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// If you plan on using FBX2GLTF, you need to have the fbx2gltf executable in the packing directory.
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// You can download it from here -
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// https://github.com/facebookincubator/FBX2glTF
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// This module exists, but I haven't used it for this project -
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// https://www.npmjs.com/package/fbx2gltf
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const { exec } = require('child_process');
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const fs = require('fs');
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const path = require('path');
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const readline = require('readline');
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// Function to find all .gltf and .glb files recursively
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function findFBXFiles(dir) {
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let results = [];
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const files = fs.readdirSync(dir);
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for (const file of files) {
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const filePath = path.join(dir, file);
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const stat = fs.statSync(filePath);
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if (stat.isDirectory()) {
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results = results.concat(findFBXFiles(filePath));
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} else {
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if (file.endsWith('.fbx')) {
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results.push(filePath);
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}
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}
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}
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return results;
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}
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// Start scanning from the assets directory
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const baseDir = path.join(__dirname, '..', 'docs', 'js', 'pxlRooms');
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try {
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const files = findFBXFiles(baseDir);
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if (files.length === 0) {
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console.log('No .gltf or .glb files found.');
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return;
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}
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const rl = readline.createInterface({
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input: process.stdin,
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output: process.stdout
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});
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// Process files sequentially
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let currentFileIndex = 0;
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function processNextFile() {
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if (currentFileIndex >= files.length) {
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rl.close();
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return;
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}
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const file = files[currentFileIndex];
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const shortName = "." + file.replace(__dirname, '');
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rl.question(`Do you want to process the file ${shortName}? (yes/no) `, (answer) => {
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if( ["yes","y"].includes(answer.toLowerCase()) ){
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console.log(`Processing file ${shortName}...`);
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//const env = Object.assign({}, process.env, { TOKTX_PATH: '.\\packing\\toktk.exe', shell: true });
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const env = { shell: true };
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const fileOutput = file.replace('.fbx', '.glb');
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//const command = `.\\packing\\fbx2gltf.exe --binary --draco --verbose --input ${file} --output ${fileOutput}`;
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const command = `.\\packing\\fbx2gltf.exe --binary --verbose --input ${file} --output ${fileOutput}`;
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exec(command, env, (err, stdout, stderr) => {
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if( err ){
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console.error(`Error processing file ${shortName}:`, err);
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}else if( stderr ){
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console.error(`Error output for file ${shortName}:`, stderr);
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}else{
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console.log(`Successfully processed file ${shortName}:`, stdout);
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}
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currentFileIndex++;
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processNextFile();
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});
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}else{
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console.log(`Skipping file ${shortName}`);
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currentFileIndex++;
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processNextFile();
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}
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});
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}
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processNextFile();
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} catch (err) {
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console.error('Error scanning directory:', err);
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}

‎packing/glbAnalyzer.py

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import argparse
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import json
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import struct
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def parse_glb(file_path):
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#if not file_path.startswith("..\\"):
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# file_path = "..\\" + file_path
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ret = {}
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with open(file_path, 'rb') as f:
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magic = f.read(4)
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if magic != b'glTF':
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raise ValueError("File is not a valid GLB file")
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version, length = struct.unpack('<II', f.read(8))
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if version != 2:
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raise ValueError("Only GLB version 2 is supported")
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content_length, content_format = struct.unpack('<II', f.read(8))
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if content_format != 0x4E4F534A: # JSON format
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raise ValueError("GLB content is not in JSON format")
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content = json.loads(f.read(content_length))
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print("Keys in GLB content:", content.keys())
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# Check for Draco and KTX compression
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for buffer_view in content.get('bufferViews', []):
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if 'extensions' in buffer_view:
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if 'KHR_draco_mesh_compression' in buffer_view['extensions']:
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print("Draco compression found")
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if 'KHR_texture_basisu' in buffer_view['extensions']:
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print("KTX compression found")
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ret = content
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return ret
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def write_glb(file_path, content):
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with open(file_path, 'wb') as f:
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f.write(b'glTF')
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f.write(struct.pack('<II', 2, 0)) # version 2, placeholder for length
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content_bytes = json.dumps(content).encode('utf-8')
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content_length = len(content_bytes)
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f.write(struct.pack('<II', content_length, 0x4E4F534A)) # JSON format
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f.write(content_bytes)
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# Update the total length of the GLB file
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total_length = f.tell()
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f.seek(8)
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f.write(struct.pack('<I', total_length))
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='Parse a GLB file and print its keys.')
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parser.add_argument('-i', '--input', required=True, help='Path to the input GLB file')
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parser.add_argument('-o', '--output', required=True, help='Path to the output GLB file')
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args = parser.parse_args()
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glbContent = parse_glb(args.input)
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print("GLB content:", glbContent)

‎packing/gltfpack.exe

507 KB
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‎packing/gltfpack.js

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const { exec } = require('child_process');
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const fs = require('fs');
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const path = require('path');
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const readline = require('readline');
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// Function to find all .gltf and .glb files recursively
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function findGLTFFiles(dir) {
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let results = [];
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const files = fs.readdirSync(dir);
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for (const file of files) {
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const filePath = path.join(dir, file);
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const stat = fs.statSync(filePath);
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if (stat.isDirectory()) {
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results = results.concat(findGLTFFiles(filePath));
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} else {
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if (file.endsWith('.gltf') || file.endsWith('.glb')) {
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results.push(filePath);
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}
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}
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}
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return results;
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}
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// Start scanning from the assets directory
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const baseDir = path.join(__dirname, '..', 'docs', 'js', 'pxlRooms');
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try {
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const files = findGLTFFiles(baseDir);
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if (files.length === 0) {
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console.log('No .gltf or .glb files found.');
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return;
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}
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const rl = readline.createInterface({
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input: process.stdin,
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output: process.stdout
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});
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// Process files sequentially
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let currentFileIndex = 0;
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function processNextFile() {
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if (currentFileIndex >= files.length) {
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rl.close();
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return;
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}
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const file = files[currentFileIndex];
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const shortName = "." + file.replace(__dirname, '');
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rl.question(`Do you want to process the file ${shortName}? (yes/no) `, (answer) => {
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if( ["yes","y"].includes(answer.toLowerCase()) ){
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console.log(`Processing file ${shortName}...`);
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//const env = Object.assign({}, process.env, { TOKTX_PATH: '.\\packing\\toktk.exe', shell: true });
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const env = { shell: true };
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const command = `.\\packing\\gltfpack -i "${file}" -o "${file}" -cc -kn -km -ke -c -tc -tp -ts 1.0 -v`;
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exec(command, env, (err, stdout, stderr) => {
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if( err ){
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console.error(`Error processing file ${shortName}:`, err);
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}else if( stderr ){
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console.error(`Error output for file ${shortName}:`, stderr);
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}else{
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console.log(`Successfully processed file ${shortName}:`, stdout);
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}
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currentFileIndex++;
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processNextFile();
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});
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}else{
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console.log(`Skipping file ${shortName}`);
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currentFileIndex++;
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processNextFile();
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}
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});
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}
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processNextFile();
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} catch (err) {
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console.error('Error scanning directory:', err);
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}

‎packing/ktx.dll

1.74 MB
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‎packing/ktx2check.exe

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‎packing/ktx2ktx2.exe

40.5 KB
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‎packing/ktxinfo.exe

26.5 KB
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