This is a simple RefCounted holder of a Buffer ref and offset. Encoded
commands can store a ref to this object instead of directly storing an
inline Buffer ref and offset, allowing other commands to dynamically
patch in a different buffer+offset as needed, in a memory-safe way;
as opposed to e.g. retaining an unmanaged pointer to the encoded
command itself and modifying it in-place.
Validation commands will use this to rewrite buffer references in
encoded commands, so that they execute over validated inputs rather
than over their original client-provided inputs.
No net functional changes in this CL, just some groundwork for indirect
draw/dispatch validation.
Bug: dawn:809
Change-Id: I0570521a610fe3ea08190a525b4904749d7b7f24
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/64420
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ken Rockot <rockot@google.com>
Ken Rockot