[Bug 43126] New: format DXGI_FORMAT_R8G8B8A8_UNORM stub

https://bugs.winehq.org/show_bug.cgi?id=43126

Bug ID: 43126
           Summary: format DXGI_FORMAT_R8G8B8A8_UNORM stub
           Product: Wine
           Version: 2.9
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3dx11
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 58329
  --> https://bugs.winehq.org/attachment.cgi?id=58329
full log

Since hearthstone patch 8.2.0.19506 which seems to make the switch to d3d11,
several effects are not working properly.

Including hovering over the played card history some card animations and the
winning/losing screen. Instead of the usual effects the screen turns partially
or completely black, while this is happening the following is output to the
console:

fixme:d3d11:d3d11_immediate_context_ResolveSubresource iface 0x14ba2c,
dst_resource 0x118eaea0, dst_subresource_idx 0, src_resource 0x89b3f60,
src_subresource_idx 0, format DXGI_FORMAT_R8G8B8A8_UNORM stub!

The game can be made more playable by turning graphical effects to minimal but
problems in the card history and other screens using special effects persist.