radv,aco: Convert 1D ray launches to 2D
Because we use unaligned dispatches, 1D launches only use 8 threads per wave. Converting to 2D and fixing up launch IDs in the prolog significantly increases occupancy.
Gives ~30% uplift in Ghostwire Tokyo.
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Because we use unaligned dispatches, 1D launches only use 8 threads per wave. Converting to 2D and fixing up launch IDs in the prolog significantly increases occupancy.
Gives ~30% uplift in Ghostwire Tokyo.