既然聊起来了就吃饱闲着大略翻译一下好了XD 看会不会抛砖引玉到专业人士讲解 ※ 引述《choan (八房龙之助)》之铭言： : https://dolphin-emu.org/blog/2014/05/19/obituary-32bit/#cuthere : Ten years ago Dolphin was a very limited program designed to run in only one : environment. It was a 32-bit Windows application that required Direct3D 9 : with no alternatives. A lot of things have changed since then as Dolphin has : expanded its goals. The emulator has become much more robust over time with : support added for 64-bit Windows, Linux, Mac OS X, FreeBSD, and even Android : phones and tablets! 十年前 Dolphin 还是个功能不多的程式，设计给唯一的环境使用─32 位元的 Windows 系统和D3D 9。十年来很多事情都改变了，Dolphin 的目标也变得更广了，功能性上也在 加入了支援 64 位元 Windows、Linux、OS X、FreeBSD 甚至 Android 手机和平板後更 强大了！ 注：32 位元以下简称 x86、64 位元简称 x64 : Sometimes though, changes must be made. Some choices require months of : preparation, discussion, examination, while others are inevitable. : Maintaining features is a balance between cost and reward. The cost being : development time, maintenance, debugging, bandwidth, money and more, with the : reward being a better, cleaner experience for our users. The reward was : obvious for 4.0. 有的时候就是该下决定，Z>B，你懂的。 : Well over one third of our Windows downloads for Dolphin 4.0 were the 32-bit : variant; a huge share of our userbase. Despite that, we still find ourselves : at a crossroads just a few months later. 虽然超过 1/3 的 Dolphin 4.0 版下载量都是 x86 版本，面对这麽大的用户群我们还 是得做决定。 : Why consider dropping 32-bit builds? 为什麽是不再更新 x86 版本？ : The Dolphin Emulator team is constantly searching for ways to improve the : development pipeline. From the insane to the mundane, hundreds of ideas will : come and go every year as for how to make things better. But the past few : months have seen a reoccurring theme: 32-bit builds break, and many of the : developers question its worth. x86 版本总是有问题，很多开发者质疑她的存在价值。 : Windows XP has been unsupported for months 我们已经停止支援 XP 好几个月了 : Dolphin has already dropped Windows XP support. With a little under 10% of : our users still using the OS, Windows XP was a significant share of our : users, but at the same time the team made a decision not to let any : particular OS hold us back. The only reason for dropping XP support is : because the latest Microsoft Visual Studio Compiler doesn't support Windows : XP. The aging operating system's days were numbered simply by that, and once : the move was made to C++11, there was no going back. The unintended side : effect to that drop is that Dolphin no longer supported any operating systems : that were primarily 32-bit. Vista, Windows 7, and Windows 8 are all designed : for 64-bit. 目前约有近 10% 的使用者是使用 XP，但我们不愿意被单一作业系统拖住脚步。决定性 的关键是 XP 不支援最新的 Microsoft Visual Studio Compiler。我们换到 C++11 开 发之後就回不去惹~ 有个副作用是专为 x86 设计的系统都不支援了，不过 Vista, 7, 8 都是 x64 : Dedicated 32-bit processors are very outdated and cannot run Dolphin at : playable speeds x86 CPU 都是古董了，没一个能打的，没办法把 Dolphin 跑出能玩的速度 : On the hardware side of things, x86_32 processors died a long time ago. It's : only thanks to Microsoft selling 32-bit versions of their operating system : that any sizable number of Dolphin users need 32-bit builds at all! Since x86 CPU 早就 GG 溜，要不是微软一直卖 x86 版本的作业系统，我们早就不用 支援 x86 了！(换句话说很多使用者是用 x64 cpu跑 x86 系统玩 Dolphin) : 2003 when x86_64 processors debuted, the newer architecture has proven itself : far superior to the original specs it was based off of. Any computer that : needs 32-bit due to memory constraints or processor limitations simply won't : run Dolphin at usable speeds, so what use is there in supporting it? Any 2003 年亮相的 x64 cpu 的架构好太多了，还在用 x86 cpu 的系统跑 Dolphin 速度 根本呵呵，何必支援？懂？ : computer that can run Dolphin is already using a 64-bit processor. : Dolphin's 32-bit builds are not indicative of the Dolphin experience : Most programs can have 32-bit builds and 64-bit builds without trouble or : more commonly host only 32-bit builds and let 64-bit users use it as well. : For those programs, the benefits of 64-bit don't matter much at all, and the : end users need not worry about any of it! : This is not true with Dolphin, where some games still do not run full speed 大部分的程式跑 x86 或是 x64 刻意去支援使用者是感觉不出来差异的 但在 Dolphin 上原生 x64 的优势差别非常明显，特别是有些游戏还无法全速进行的 状态这差别更重要。 : on any existing configuration. Dolphin sees very important and observable : benefits in its 64-bit builds! With a 64-bit address space, Dolphin can : reserve a 4GB area that maps to GCN/Wii memory boosts performance greatly : and, more importantly, 64-bit has twice as many registers. This brings the : emulator much closer to the number of registers to that of the PPC processor. : Plus, since 64-bit is large enough to fit the DSP's 40-bit registers, it can : run DSP JIT (Just In Time) recompiler for a nice speedup. 32-bit has to fall : back on the CPU-intensive interpreter functions for most DSP instructions. In : addition to all of that, compilers even generate better code thanks to the : ability to do 64-bit memory operations without needing special alignment. : In preparation for this announcement, we did thorough performance testing to : compare 32-bit builds and 64-bit builds with no idea how they would actually : turn out. While we knew that 32-bit was a little slower, the results were : shocking. 用 x64 的定址空间，Dolphin 可以用 4GB 的空间去 map GCN/Wii memory，大幅提 升表现，同时 x64 有 x86 两倍的 register，更接近 PPC processor 的 register 数量... (都是技术性的东西翻来翻去名词大概都会用原文，乾脆略过XD) : Maintenance : One of the more annoying aspects of 32-bit Windows support is that the : operating system lacks critical features for development. This means that : menial changes that work on other other platforms break it again and again. : For Dolphin's Just In Time Compiler (JIT), that means making special code for : 32-bit builds all the time. This is not only is frustrating, but also stunts : development as it slows down developers and prevents them from undertaking : projects in the first place! x86 系统支援起来最麻烦的是它缺少一些重要的开发功能，所以一些别的平台没有的 问题会在 x86 系统上层出不穷。像 Dolphin 的 JIT 就要一直为 x86 版本写专属的 code，既烦人又拖慢开发进度，甚至把一些开发者吓走！ : Worse yet, there is a severe lack of testing on the 32-bit builds. For 100 : revisions, there were a total of zero issue reports despite the fact that : 32-bit builds were totally nonfunctional! This makes it harder for developers : to figure out what broke the builds, and forces them to go back into old : projects that were already considered complete. 更悲剧的是，x86 版本的测试超少，改版了一百次居然零个问题回报，而且这版本根本 完全不能用都没人回报！ : There is also the case of compiling the builds themselves. Windows requires : twice as many buildbots thanks to requiring 32-bit support, taking twice the : space and using twice the processing power of our servers. To put it simply, : it has become very difficult to maintain 32-bit builds. This even causes : confusion among many users; according to advanced statistics gathered from : the downloads page, more than 60 percent of the 32-bit downloads are done by : 64-bit OSes. The majority of 32-bit users are 64-bit users needlessly using : an inferior build! x86 版本占用很多资源维护，造成伺服器和使用者的困扰。 最新的数据显示，超过六成的 x86 版本是由使用 x64 系统的使用者下载的，所以大部 分使用者根本就下载了效能比较差的版本。 : In Conclusion : 32-bit support is one of Dolphin's oldest features. But just like D3D9 before : it... times change. 32-bit has become a weight around all of our necks, : slowing down users and developers alike. With the 32-bit userbase shrinking : quickly, the builds becoming harder and harder to maintain and the benefits : dwindling, the developers have decided to discontinue the 32-bit Windows : buildbot, and cut away 32-bit support entirely. 32-bit ARM devices are not 总之 Z>B，我们要跟 x86 Windows 说掰掰了，x86 ARM 平台则会继续维护。 : affected by this decision and will continue to be supported. For loyal users : that are stuck on 32-bit Windows machines, the current builds are not going : anywhere and will be archived permanently, and Linux is a free 64-bit : operating system with full Dolphin support. 至於还在用 x86 Windows 的朋友，Linux x64 免费唷，好 Linux 不换吗？ : For any console, emulation progresses in stages. First is initial support, : grasping at straws fighting for even basic functionality. Then comes playable : games. As time progresses, accuracy and compatibility become the goal. And : finally, it reaches enhanced emulation, where emulation is not only accurate, : but improved upon through advanced features like netplay and HD graphics. In : all other consoles that have been emulated, each of these stages was : fulfilled by a different emulator. But for the GameCube and Wii? Dolphin has : fulfilled them all. It is the freedom to change and grow that has allowed : Dolphin to continue to evolve and grow in this manner. Shedding hindrances, : cleaning code, attracting new talent; Dolphin excels at these things, : allowing it to grow and evolve in ways no emulator before has ever achieved. : Removing 32-bit support is just one more step on this journey. Dolphin 好棒棒，请大家继续支持 舍弃 x86 支援式进步必要之恶~ --

※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 220.135.205.149 ※ 文章网址: http://webptt.com/cn.aspx?n=bbs/Emulator/M.1400861230.A.7DC.html 我一开始也是想说是指微软 後来看了下文就不确定是指微软还是Dolphin了... 也不是推给使用者吧 就是已经很难维护了还没有人在回报问题，就更难维护啊XD ※ 编辑: RuinAngel (220.135.205.149), 05/25/2014 10:40:05