Consider allowing a computer or copy queue to be provided to ResourceUploadBatch

[microsoft]

Consider allowing a computer or copy queue to be provided to ResourceUploadBatch

[walbourn]

That's a great suggestion. That said, I think only D3D12_COMMAND_LIST_TYPE_DIRECT, D3D12_COMMAND_LIST_TYPE_BUNDLE, or D3D12_COMMAND_LIST_TYPE_COPY would actually work. The class issues copy commands on the command-list, so D3D12_COMMAND_LIST_TYPE_COMPUTE wouldn't work.

[walbourn]

The ResourceUploadBatch can also not use a D3D12_COMMAND_LIST_TYPE_COPY command-list when generating mipmaps.

[walbourn]

And there are a few challenges with the implicit resource barrier.

[john-h-k]

The ResourceUploadBatch can also not use a D3D12_COMMAND_LIST_TYPE_COPY command-list when generating mipmaps.

I guess the easiest way to go around this is check if mGenMipsResources isn't null in End, and if it isn't, then throw an exception?

[walbourn]

Here's a PR for the library:

#71

Here's a PR for the test suite:

walbourn/directxtk12test#17

Please take a look at these instructions to try it out yourself as I can use some help in testing this on more systems.