1.0 -> 2.x Shader Deprecations

[Simon.Anderson]

Hi all,

 

We're in the process of upgrading our code base to Unigine 2.3.1 and the main unknown for me at this point there are two main concerns:

 

1. Shader deprecations:  I couldn't find evidence of this in the documentation but I just wanted to confirm - will we (potentially) have to update shader code?  If so can someone point me to the relevant doco?

 

2. .mesh file formats: I understand there is a new format as of 2.x - but is Unigine 2.x backwards compatible?  ie. Can I still use the old format with the new engine?

 

Any help on this would be much appreciated.

 

Cheers,

SImon

[silent]

Hi Simon,

 

2. .mesh file formats: I understand there is a new format as of 2.x - but is Unigine 2.x backwards compatible?  ie. Can I still use the old format with the new engine?

After conversion - yes. You can do it with MeshImport tool for example.

 

1. Shader deprecations:  I couldn't find evidence of this in the documentation but I just wanted to confirm - will we (potentially) have to update shader code?  If so can someone point me to the relevant doco?

All shaders are now written with a help of UUSL. I'm afraid, there is no special guide for shader conversion, because rendering pipeline is changed drastically. You can also check the updated rendering sequence article here: https://developer.unigine.com/en/docs/2.3.1/principles/render/sequence/. Material format article is still in development.

 

Thanks!

[Simon.Anderson]

Hangon - Are you saying we can't use any of our old material (.mat) or shader (.shader) files at all?  So there is no backwards compatibility?

 

We have A LOT of custom material and shader code and this could be a show-stopper for us.

[silent]

Hi Simon,

 

Unfortunately, it's impossible to have fully backwards compatibility when switching between major versions (1 -> 2 in this case). You can try to backup your project and migrate it from SDK Browser. After that with a help of UUSL update your custom shaders and mat files.

 

Sorry for the inconvenience caused.