Wat. Have you missed the last 15 years of graphics card history, with most of the fixed function stuff getting progressively replaced by generic programmable units? There is no "dedicated" in the future of graphics.
There is no decent framework for it, CUDA is proprietary and OpenCL is a mess. When GPUs become easy to program like CPUs are, when they create high performance (C/C++ class), multiparadigm, concurrent programming language and GPU MANUFACTURERS FULLY SUPPORT IT ON HARDWARE LEVEL then we'll have serious breakthroughs in many areas, including ray tracing. So far doesn't look like that is going to happen, even though Rust seems to be shaping as perfect candidate for that role.
What we have now is just bunch of unused potential. Hopefully Valve will be able to push nVidia, AMD and Intel to open source as much as possible of their GPU designs and together work on direct implementation of drivers in huge megadriver blob which will have light framework on top.
Apple seems to be working on everything I mentioned but who cares about Apple, they are just a small portion of market and that isn't going to change.