- Apr 6, 2018
- MSI Z370M Gaming Pro AC
- UHD 630 + Vega 64
- Mobile Phone
After researching this topic, I learned all video is all handled by frameworks (like AppleGVA). There is a mac model list with specs telling it what to use according to each model in each of the frameworks. In other words, when you open a video, or work on FCPX, it looks to the framework first to know what to do and how to handle the work to the hardware. Depending on your SMBIOS, it will pick that GPU. For iMac Pro, all video automatically goes to dGPU. You could potentially modify the framework as well but I don't have those instructions. There are some mods on AppleGVA using Shiki.kext.Are there any downsides to this approach? I have everything working on my system with connectorless framebuffer and quick sync enabled, but no protected video playback. Otherwise my system is a much better fit for iMac18,3. Are there other popular ways to get protected video playback without disabling iGPU entirely?
I don't particularly know what is the requirement for DRM Protection but I imagine that the GPU and monitor cable have to be directly connected. This is why I think that iGPU processing for video doesn't work for DRM that is connected via dGPU. I may be wrong about this, would gladly accept another opinion/fact but for now, all I know I got my system working good with iMacPro1,1 SMBIOS.