CLI function "merge" is overwriting textures with the same name

[freddida]

Describe the bug
I am using the CLI function gltf-transform merge to combine two gltf files.
When I try to merge tho files that refer to a texture with the same name (but PNG is different), the merge function overwrites the first texture.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://drive.google.com/drive/folders/17PogH2JWp7Pw8Hb_3LUS_KZ8EPusKTAN?usp=sharing'
2. Run gltf-transform merge BoomBox.gltf BoomBox_inked.gltf merged\output.gltf
3. Check the merged folder
4. Note that the BoomBox_baseColor texture from the ink folder is overwritten from the orignal texture file.

Expected behavior
What I want is that the exported model doesn't overwrite textures with the same name but outputs them separately.

Versions:

• Version: [2.1.5]
• Environment: [Tested in CLI]

[donmccurdy]

Hi, thanks for reporting the issue! As a workaround, if you have the option of outputing to a .glb instead of .gltf I believe it will avoid this problem. The error occurs when writing to disk, since both images have the same URI basenames (e.g. BoomBox_normal.png) and the I/O classes do not create separate directories for the textures.