Comment by marmarama
2 days ago
Loads of GPUs with Vulkan support use TBDR. The Adreno GPU in the Steam Frame's SnapDragon SoC, for one.
There is also a Vulkan driver for the M1/M2 GPU already, used in Asahi Linux. There's nothing special about Apple's GPU that makes writing a Vulkan driver for it especially hard. Apple chooses to provide a Metal driver only for its own reasons, but they're not really technical.
No. For best performance, you have to batch your calls/memory access patterns with TBDR in mind. Dropping in a Steam PC game (indy, AA/AAA) game render pipeline, specifically optimized for Nvidia/AMD/Intel, to a TBDR GPU, is going to give poor performance. That's the context of this discussion. Round pegs DO fit into square holes, you just have to make sure the hole is bigger than would normally be necessary. ;)
Steam frame is more for streaming PCVR than running existing PCVR games natively.