[FragmentShader] Create package for transpiling GLSL into Flutter-ready SPIR-V code

[clocksmith]

No description provided.

[ueman]

How is the progress on this? As far as I can tell https://github.com/flutter/engine/tree/main/lib/spirv seems to be already functional, but it isn't exported by dart:ui nor is it available on pub.dev.

[zanderso]

This has been superseded by #102674, which added a mechanism in the Flutter CLI for compiling GLSL assets to SPIR-V.

[creativecreatorormaybenot]

@zanderso that sounds awesome! How can we use it?

[zanderso]

@creativecreatorormaybenot Sorry this is in development, and not well documented yet. But if you put a GLSL shader in a file ending with .frag in the assets list in pubspec.yaml, when the app is built, that file will be translated to SPIR-V, and be available as an asset that you can then pass to the FragmentProgram API. See the treatment of ink_sparkle.frag in the linked PR.

[github-actions]

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