D3D12: cleaner GPU sync in d3d12Renderer::discard()
D3D12: cleaner GPU sync in d3d12Renderer::discard()

mgerhardy/oryol,mgerhardy/oryol,aonorin/oryol,code-disaster/oryol,floooh/oryol,code-disaster/oryol,code-disaster/oryol,floooh/oryol,aonorin/oryol,floooh/oryol,mgerhardy/oryol,floooh/oryol,mgerhardy/oryol,floooh/oryol,code-disaster/oryol,code-disaster/oryol,code-disaster/oryol,floooh/oryol,mgerhardy/oryol,aonorin/oryol,aonorin/oryol,code-disaster/oryol,aonorin/oryol,aonorin/oryol,mgerhardy/oryol,aonorin/oryol,mgerhardy/oryol