Wii U emulation

DatKid20 · 10-12-2013, 01:25 PM **#11**

(10-12-2013, 01:23 PM)NaturalViolence Wrote: I'm pretty sure nintendo themselves said R700.

You cannot evaluate shader throughput based on the number of shader units alone. Its shader throughput is 352 GFLOPs putting it about on par with a 4650. Of course a number of other things effect actual shader performance so that still isn't the full story.

I thought you could if they were the same architecture? Huh

**NaturalViolence** · (This post was last modified: 10-12-2013, 01:31 PM by NaturalViolence.)

You need both the number of shader units and the clock rate. Then if they are the same microarchitecture you can do it.

DatKid20 · 10-12-2013, 01:32 PM **#13**

That makes sense.

Gir · 10-12-2013, 01:38 PM **#14**

(10-12-2013, 12:52 PM)MaJoR Wrote: According to delroth, the main problem isn't the CPU, it's the GPU. Flipper was pretty basic, and it was more or less just enhanced for the Wii. The Wii U GPU is an entirely different beast, built from a very modern and full featured GPU. No emulator that has existed up to this point has had to emulate a GPU on that scale before. It would SUCK.

Why would you need to emulate what a PC already has ? Instead of Emulating is it not possible
to directly access the Graphic Card using Virtualization ?

http://en.wikipedia.org/wiki/Graphics_address_remapping_table
http://en.wikipedia.org/wiki/IOMMU

***MayImilae*** · 10-12-2013, 01:56 PM **#15**

Gir Wrote:Why would you need to emulate what a PC already has ?

The Wii U GPU will be doing a lot of low level stuff that the standard desktop card wouldn't do. Plus it's based on the R700, it isn't exactly an R700. So yea, even though it is close to what PCs use, that ironically means it's harder to emulate, not easier. See Xbox emulators.

DatKid20 · 10-12-2013, 01:57 PM **#16**

(10-12-2013, 01:56 PM)MaJoR Wrote:
Gir Wrote:Why would you need to emulate what a PC already has ?

The Wii U GPU will be doing a lot of low level stuff that the standard desktop card wouldn't do. Plus it's based on the R700, it isn't exactly an R700. So yea, even though it is close to what PCs use, that ironically means it's harder to emulate, not easier. See Xbox emulators.

What xbox emulators? Does anyone even work on those?

Gir · 10-12-2013, 02:07 PM **#17**

(10-12-2013, 01:56 PM)MaJoR Wrote:
Gir Wrote:Why would you need to emulate what a PC already has ?

The Wii U GPU will be doing a lot of low level stuff that the standard desktop card wouldn't do. Plus it's based on the R700, it isn't exactly an R700. So yea, even though it is close to what PCs use, that ironically means it's harder to emulate, not easier. See Xbox emulators.

Would the AMD Mantle API be beneficial here since it's a Low-Level API ?

***MayImilae*** · (This post was last modified: 10-12-2013, 02:37 PM by MayImilae.)

The thing about low level APIs is that they get their speed by using extremely specific properties of a system's architecture. This is why high level APIs like DirectX and OpenGL exist in the first place. A low level API for a GeForce 760 is not going to work on Radeon R290, hell it wouldn't even work on a GeForce 570. The Xbox One and Wii U GPUs are pretty much in the same boat. Even though they are both Radeons, the significant age and architecture differences insure so they are absolutely not directly compatible at low level. However, in theory, one could adapt the low level stuff in the Wii U GPU to the the Mantle equivalents, but there just isn't enough information out there to know if that is possible, let alone worth it.

***Shonumi*** · 10-12-2013, 02:47 PM **#19**

Datkid20 Wrote:What xbox emulators? Does anyone even work on those?

Mostly blueshogun and some others working on cxbx. See the ngemu forums for more info. A few games are playable at best, but XBOX emulation is largely stuck in terms of progress the last time I checked. Blueshogun explained (in a lengthy post) why having hardware similar to a PC doesn't necessarily mean it'll be easy to emulate (lack of documentation is a pretty big factor, iirc).

Gir · (This post was last modified: 10-12-2013, 03:19 PM by Gir.)

(10-12-2013, 02:47 PM)Shonumi Wrote:
' Wrote:What xbox emulators? Does anyone even work on those?

Mostly blueshogun and some others working on cxbx. See the ngemu forums for more info. A few games are playable at best, but XBOX emulation is largely stuck in terms of progress the last time I checked. Blueshogun explained (in a lengthy post) why having hardware similar to a PC doesn't necessarily mean it'll be easy to emulate (lack of documentation is a pretty big factor, iirc).

I think the lack of dedication to Xbox Emulation might be down to lack of Great games on that platform.

I mostly wish for a well developed Dreamcast Emulator, Demul is the only DC Emulator
that's currently in development and NullDC is stagnating.