Using ComputeBuffer from SRP

Hi!

To use computer buffer counter functionality there's ComputeBuffer.SetCounterValue and ComputeBuffer.CopyCount to use from the main thread.

However with Scriptable Render Pipeline I need CommandBuffer versions of these calls.
Now there's CommandBuffer.CopyCounterValue, but I found no equivalent of SetCounterValue.

Using the main thread version sort-of works, but causes random flickering because of concurrency issues.

Does anyone knows if it exists, and maybe I just somehow missed it?

 

Hi! Can anyone suggest a solution? Still relevant for Unity 2020

 

I stopped using Append altogether, and using atomic operations in a raw buffer instead.

I use
RWByteAddressBuffer _CounterBuffer;
with
_CounterBuffer.InterlockedAdd(offset, 1, originalValue);

I use a compute shader to clear the counters, and one to copy to the _IndirectArgsBuffer
But in a simple use case you could clear and update your _IndirectArgsBuffer directly.
Please note that _IndirectArgsBuffer needs to be declared as RWStructuredBuffer<uint> the byte address version doesn't work on some platforms...

Hope this helps