3 commits

Author	SHA1	Message	Date
Raph Levien	0762cc763c	Implement clear_buffers on Metal ... Since clearing functionality is not built-in, use a compute shader. Simplify tests greatly; they don't need the workaround.	2021-11-20 22:24:52 -08:00
Raph Levien	657f219ce8	Better DX12 descriptor management ... Reduce allocation of descriptor heaps. This change also enables clearing of buffers, as the handles are needed at command dispatch time. Also updates the tests to use clear_buffers on DX12. Looking forward to being able to get rid of the compute shader workaround on Metal. This is a followup on #125, and progress toward #95	2021-11-20 16:36:43 -08:00
Raph Levien	10a624ee75	Add message passing litmus test ... This is our version of the standard message passing litmus test for atomics. It does a bunch in parallel and permutes the reads and writes extensively, so it's been more sensitive than existing tests.	2021-11-11 16:17:04 -08:00