I have got a demo https://github.com/HinTak/skia-python-examples/blob/main/SkSL_ShaderMulti%2BSDL2.py which does most of https://shaders.skia.org in python now. It is quite pretty but with some hacks. I realise I need to add SkV2 and float as uniform, too, to remove those hacks. The code exists in my hard disk now.

Just a placeholder for a pull.