Burst 1.5.0 and Generic Function Pointers

In this page of the documentation, there's a line that says "Function pointers don't support generic delegates." This is partially correct. The truth is that generic

FunctionPointer

s run in a compiled Job DO work; however, if the

FunctionPointer

is run outside of the job (via mono), they DO NOT work.

In Burst version 1.5.0, there's a nifty feature where you can assume booleans to be true or false. Using that, you can make your code do different things if it's compiled by Burst or not.

Here's how you use the

Assume

method to create a

FunctionPointer

implementation that supports generics in all cases:

https://github.com/CareBoo/Burst.De...ates/CareBoo.Burst.Delegates/BurstFunc.gen.cs

You have 2 cases -- When the code being run is compiled by Burst, then you use the generic

FunctionPointer

. When the code being run isn't compiled by burst, then you use a stored pointer of the C# delegate. All you have to do is keep a map from the function pointer to the C# delegate. You can do this when you compile the

FunctionPointer

.

There ya go, now it's much easier to define

FunctionPointer

s in your generic methods and structs.

 

I've been using Burst version 1.6.x, and this no longer works. Getting an error that generic functions aren't supported.