Add support for "layout(push_constant)"

I'm trying to create a Qt implementation for the excelent libretro's slang-shaders.

Sadly most of the shaders are using layout(push_constant) https://github.com/libretro/slang-shaders/blob/master/stock.slang .

I couldn't find any push_constant specific API, is there another way to handle it ?
Beside changing the shaders sources which I can not do it .