I would even advise to author the shaders directly in SPIR-V with a basic SSA checker and text to binary translater. That, very conservatively to avoid any driv

I would even advise to author the shaders directly in SPIR-V with a basic SSA checker and text to binary translater. That, very conservatively to avoid any drivers incompatibility (aka nothing fancy). I wonder if there is an open source HLSL to spir-v compiler written in simple and plain C... but I am ready to work a bit more to avoid to depend on a complex HLSL compiler.