Backport new base/dx11 rendersystem changes so other backports are easier; removes obsolete dx9 stuff, better barriers, finalize RenderTtextureDetail replaced with required mipsize Fix nvwgf2umx crashes - these were being caused by blocking resource loads within managed render blocks; these would run the texture manager's hookup jobs, which would include async hookup jobs for texture streaming, but also the textures we wanted immediately. The problem with fulfiling these texture streaming hookup jobs is the render thread is already executing and a texture streaming hookup job is going to invalidate them by replacing the contents. This would happen more frequently for slow pcs where their texture streaming can't be fulfiled fast enough. I've hooked up a simple system to only fulfil the hookup jobs of the textures that have been requested during the render block.