Hi people i buyed a msi rx580 and test cemu emulator (1.8.0) and i have 15 fps with a lot of shadows issues :banana: , but with my old nvidia 960 runs on 20 fps without issues , its for opengl drivers right? , amd never fix this right?.
Ask vase, I guess. He says his setup runs with full frames. Or pray to whatever you hold dear that AMD gets money this quarter and improves their sh*tty OpenGL driver.
One fast question On what kind of GPU Dev. working on this Emu? Yes..... TBH OGL is working OK, in Wolf NO/TOB with SweetFX and in 1440p..... You need to ask Dev. for share little Love for ATI also. PS. When im reading about an 750Ti is faster than 280X then i rest my case :bang: UPD. "Shame about Mario kart. I don't think we can put all the blame on AMD. All the other games work on AMD, so I think this could be a Cemu issue. I'd love it if they added a Vulkan backend. Would make these kind of things go away. Here's to hoping." Try there: -> https://www.reddit.com/r/cemu/comments/6cyk77/cemu_180_and_amd_polaris_cards -> https://www.reddit.com/r/cemu/ I have on my HDD almost all EMUs avaible (C64 also ) One thing is that CEMU is Under construction so be patience....
It's the AMD driver Onna, not the developer. They work through Patreon and they get money to improve for both. The AMD OpenGL driver is simply slow, even slower than DX11.
Doesn't help that OpenGL is fragmented like f*ck with vendor specific extensions as opposed to unified extensions (which OpenGL was originally supposed to be built around), this is how Vulkan will go as well, bet you any money on it.
It would need to be developed on AMD though. In that case, the code would naturally be written in such a way that it doesn't hit or trigger AMD's OpenGL slow paths. You write a piece of code, run it, you see it runs like arse, you change it until it runs fast. This has always been the case in small development teams targeting OpenGL. Prime example is the Demoscene. Demos that were developed on AMD hardware ran very well on AMD and most of the time also on NVidia (even though they didn't develop on NVidia.) However, Demos developed on NVidia hardware would very, very often ran very badly on AMD. The counter-argument to that has always been that AMD's GL implementation is more strict and more correct, while NVidia's implementation is very lax, allowing wrong or non-optimal use of the API, with the driver working around things, breaking standards-conformance to speed things up. I have no idea whether that argument is valid or not.
That's why i said we need to wait for Dev. to polish things Up. Yes i know that OGL for some is not Original OGL at all In the end we need to wait. Or we will have DX11.0 and 'OGL' until 2024 :bang: -> but you will need new H/W every year, like f. subscription :evilgrin: PS. No need to dwell, I love New H/W and after all new API's and Free standards. PS.2 But this have an Bright side also Look -> ZEN aka ryZEN 8/16 for 300USD :banana: + :finger2: So it's still hope for the changes at Dev. side....
Perhaps extension related? Both AMD and Nvidia have a number of extensions for OpenGL and if the software is developed primarily on Nvidia then maybe AMD's extensions go unused? Vulkan is also seeing some development here recently, AMD's public drivers still bundle runtime 1.0.39.1 but the SDK (Most recent 1.0.51.0) have a couple of AMD extensions now and of course also a few Nvidia ones. ( https://vulkan.lunarg.com/doc/sdk/1.0.51.0/windows/release_notes-1.0.html ) Vulkan is still heavily developed too and I guess even with OGL experience it would be a not insignificant amount of work to basically add a whole new API to CEMU and then actively support it and maintain feature parity, Dolphin recently dropped DX12 due to this since it was poorly maintained compared to Vulkan though it was technically functional but had seen little active development.
I'm following the development of the emulator since the beginning, even before it exploded the way it has. AMD used not to be supported at all officially, since they don't support ARB 2015 features that NVIDIA does. The emulator is relying on them and other OpenGL extensions to effectively give Vulkan-like performance. AMD has more glitches with it, and much less performance because they don't multithread the driver the way NVIDIA does. This is like that for pretty much everything. If you look at Linux OpenGL performance, for example, you'll see that depending on the title, sometimes the Fury X is slower than a GTX 960.
CEMU 1.8.1b is now available, fixes full CPU load on one thread & improves overall game compatibility
Y This new version of CEMU is currently available to all Patreon backers, and will be made available to the public next week. I've covered the news in my corner
Yeah, public release is on the 30th. http://cemu.info/patreon/changelog/cemu_1_8_1.txt EDIT: Answered by OnnA above.
Its a compound issue, its not so much that amd's driver is strict, its more that nvidia's driver patches many common mistakes on the fly extremely well , and amds driver is slow on top of that (high overhead).
