Use inline spirv intrinsics for raytracing demo.

[kevyuu]

Use inline spirv intrinsics for raytracing demo.

[devshgraphicsprogramming]

btw is there any alternative to

[shader("callable")]
void main(inout RayLight cLight)

like declaring a RayLight variable inside the function and decorating the storage class as IncomingCallableDataKHR ?

Also similar question for entrypoints dealing with raypayloads (miss shader, etc.) where the storage class would be IncomingRayPayloadKHR, also would that somehow allow us to not use the HLSL's [raypayload] attribute and the read/write semantic weirdness with a :

[devshgraphicsprogramming]

Also is there any way to declare the alternative to BuiltInTriangleIntersectionAttributes (afaik its just barycentrics) ?

[kevyuu]

Also is there any way to declare the alternative to BuiltInTriangleIntersectionAttributes (afaik its just barycentrics) ?

Not sure how to entry point argument into spirv intrinsics. Dxc complain if the number of argument does not match the expected number of argument of its execution_model.