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→Overview: Direct quote
The lead developer, Alexandro Sanchez (AKA 'AlexAltea'), [https://twitter.com/AlexAltea/status/1107923051621044225 started working] on the Orbital program the day he launched it publicly on GitHub on [https://github.com/AlexAltea/orbital/commit/064abb20f9e410f9ac1110ccedc7287820421253 October 29, 2017]. On [https://twitter.com/AlexAltea/status/1107865782472634368 18 March, 2019], AlexAltea revealed on Twitter that Orbital was able to boot into Safe Mode from PS4 5.xx kernels on PC, with graphical output.
According to AlexAltea, Orbital relies on "[https://twitter.com/AlexAltea/status/1108700030192549889 hardware-accelerated virtualization, not emulation, so it yields near-native performance]. If anything, there could be bottlenecks in GPU rendering, e.g. due to UMA, but [he had been ] working on ways to reduce overhead there. " Orbital uses SPIR-V for hardware-accelerated virtualization - it is a low-level shader language used in the Vulkan graphics API. The program is driving graphical output by fully emulating the AMD GPU via the Vulkan backend and recompiling GCN bytecode to SPIR-V.
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