* renderdoc/api/replay/ contains all the headers for using the replay and
analysis side of renderdoc (like in a UI or auto-testing tool)
* renderdoc/api/app/ contains the headers if you wanted to write a
renderdoc-aware application.
* Also for float/unorm texture add an additional "resolved" option that
just does an unweighted average of all samples, which is the behaviour
from before (assuming that's what ResolveSubresource does).