zlacker

>>evolve+(OP)
Would love to see it on MacOS X -- Steam works great on my Mac Mini for the games it supports, would be great to see everything run on it.

>>PaulHo+VK2
Main issue is the lack of Vulkan support on macOS. Currently, solutions like MoltenVK have to be developed to add Vulkan support, which isn't as clean as just supporting it.

For some reason the prospect using Wine, Rosetta 2, and DXVK with MoltenVK on top just to run some games doesn't inspire a lot of confidence that this whole thing will be performant and/or stable.

>>6SixTy+Z63
No, the main issue is a fundamentally different rendering pipeline (tile based deferred rendering) that makes "Vulkan support" a conceptually difficult square peg in a round hole problem, since everything is made for immediate rendering, like all the other mainstream GPUs use.

>>nomel+Rk3
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.

>>marmar+wu3
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.

>>nomel+vG6
I already run stuff that was very much not made with TBDR in mind, on TBDR GPU architectures, and the performance is perfectly fine.

For sure, you can squeeze a few percentage points more out if you optimize for TBDR, and there are some edge cases where it's possible to make TBDR architectures behave pathologically, but it's not that big a deal in the real world.

I also disagree that the Steam Frame is for streaming primarily. If it was, why put such a powerful SoC in it or using it as the prototype device for doing x86 emulation with Fex?

The Adreno 750 is a 3 TFlops GPU that _should be_ substantially faster than a PS4 or a Steam Deck. It'll play plenty of low-end PCVR games pretty well on its own, if Fex's x86 emulation is performant, which it is.

Like the Meta Quest 2, it's a crossover device that a lot of people will just use standalone.