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  Reply # 503362 8-Aug-2011 14:56
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crackrdbycracku: OK, this is not my area of expertise and I am just asking a question of people who seem to know better.

Does the range of specs that come under the umbrella of 'PC' have a bearing here?

When you buy an x-box you know the processor speed, memory etc. More to the point the game developer knows.

When you buy a PC they come in all shapes and sizes so to speak, all the way from 'underpowered' laptops to custom re-built desktop gaming rigs.

Wouldn't this make it several orders of magnitude harder to develop a game and get it to market in short order?

As I said, this is a question. Put forth by someone not talking about their area.

Thanks


Yes and no. It's by no means trivial, but by the time this is released you'll be emulating something like a 6 year old CPU with modern hardware. Some of it can abstract away almost completely - if you access the video hardware, say, by only using DirectX, then nothing needs to be emulated as your PC will already have those APIs available natively in it's own DirectX implementation. Also on 6 years newer hardware. Likewise for the kernel calls - you just reimplement any Xbox-OS-specific kernel calls directly in x86 code. MS obviously have the original source code so it's relatively simple to port it to x86-64.

Translation from PPC binary machine code to x86-64 for the game itself isn't easy, but it has already been done, and shown to offer quite reasonable performance even when translated by a contemporary CPU, let alone one that's many years more advanced.

It's also pretty straightforward compared to deciding which bits of the low level hardware to actually emulate, because there will always be *some* developer who decides he wants to bend the metal with his bare hands. That would be the Hard Bit. But again since they have access to the hardware specs it should be possible.

I'd wager there will be some games that don't work. But the ones that stick mostly to the 'right' way of doing things should run well, if not better than on a real Xbox.




iPad Air + iPhone SE + 2degrees 4tw!

These comments are my own and do not represent the opinions of 2degrees.


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  Reply # 503363 8-Aug-2011 14:59
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Thanks for that, good explanation.




Didn't anybody tell you I was a hacker?

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  Reply # 503364 8-Aug-2011 15:00
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crackrdbycracku: 

Wouldn't this make it several orders of magnitude harder to develop a game and get it to market in short order?



Games aren't developed 100% from scratch.

Most games developed on top of a game engine, most of these engines are cross platform thesedays.

Some companies make only game engines, some make game engines + games and some make only games using a game engine

Example:

Unreal Engine 3.x developed by Epic Games is used as the basis for many games ie: Batman: Arkham Asylum, Bioshock, Borderlands, Mass Effect 1 & 2, Gears of War, Unreal Tournament 3 etc etc.  All these games are multi platform.

There are many many gaming engines.

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  Reply # 506213 14-Aug-2011 12:02
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Doesn't Microsoft lose money on Xbox 360 console sales?

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  Reply # 506215 14-Aug-2011 12:06
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jhickmott: Doesn't Microsoft lose money on Xbox 360 console sales?


Not any more. This was the case for first 3 years when they introduced the console just like Sony. Now Xbox division is making them big bucks.




Do whatever you want to do man.

  

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  Reply # 507450 16-Aug-2011 17:03
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I have read several places(I'm sure I could find them again) that this rumour false.   It started with some code in one of the beta versions of windows 8 referring to xbox live.  The article I read was from a guy who investigated himself as to what the reference was.  As far as he could make out, the only reference was an error or some kind including the words 'xbox live'.

Personally I don't think it would make much sense at all for them to offer the ability to play console games on their PC OS.  More likely that there may be extra's on a 360 disc(Wallpapers and crap like that) or even just the ability to play some multiplayer games across platform(which they said we'd be able to do when they first brought out Live).

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