DirectX 12 in PPSSPP?

[Henrik]

Yes there are. Drawcalls are incredibly cheap to make on the PSP and some games like GTA sometimes reach 2000 drawcalls per frame. We try to combine them as much as possible, but it can still reach 1500 real drawcalls per frame, which not many OpenGL ES drivers can keep up with (although not really problem on desktop). Also, submitting dynamic geometry is very expensive on unextended OpenGL ES.

On nearly all mobile devices now, GPU emulation really is the bottleneck. Our CPU emulation is fast enough to not be a problem in most games on most devices.

So I actually expect Vulkan to help a lot in heavy games like GTA and God of War.

But we will see.