Hello,

Is there a way to update a (GPU visible) descriptor in a heap from a command list?

As an exemple, I have a list of 100 texture descriptors:

- Draw call 1 uses this list.

- Modify one of the descriptor (lets say, descriptor #17)... something like "commandList->UpdateDescriptor(descHeap, 17, srvDesc)"

- Draw call 2 uses the modified list.

As I understand, descriptors are managed from the CPU and to be sure I do not modify something the GPU may be using I would need to create a brand new list of 100 descriptors with only one of them modified.

- Draw call 1 uses first list.

- Create a second list of 100 descriptors with #17 different from first list.

- Draw call 2 uses the second list.

That does not look too bad but I have a feeling that scaling the number of descriptors to 10k can become problematic.

Hopefully you can understand what I mean...

Thanks.

Currently no, there is no way to do what you want. If you want to have per-draw lists, keep them small so that renaming them is cheap. If you want large lists, consider just using new elements instead of replacing them in place.

I'm afraid I don't have anything to share regarding future plans for this area, but this isn't the first time we've heard this request and we'll take it under advisement.