What is the reason why the same code version 4.2.1 can run but 6.49.0 cannot?

Questions
1

View Playground

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image1335×176 4.4 KB

2

Does this work as expected - Shader Effect Problem | Babylon.js Playground (babylonjs.com)?

3

attributes are not supported in fragment.

It is a lucky coincidence it worked in 4.2.1 :slight_smile: I would suggest removing the unused attribute line https://playground.babylonjs.com/#1ASENS#355