侠盗猎车手4——来自GTAForums置顶贴的解决方案

　　设置好之后的样子 当然你也可以自己加参数

　　游戏中的设置 2个要点 1分辨率 2显存前后相等 其他的自己设

　　~! Ultimate GTAIV Performance Fix !~

　　The Idea:

　　You've heard this rant a million times, GTAIV was future proofed all reflections and shadows are scaled with the resolution. A stupid yet seemingly unfix-able problem that makes the game a mess. Playing a game in 1024x768 or lower is not acceptable. If I wanted to do that I would pull out my P2/P3 with its 32/64mb graphic card. From looking at GTAIV, it has a lot of new technology but nothing that should struggle to run on 8800's or even 8600's. Its that resolution scaling, im sure of it!.

　　想法：

　　你已经无数次听到这样的言论，GTAIV已经被进一步证明 所有的反射和阴影都与分辨率的大小有关。(国内的结论是和富裕的显存数有关 值得商榷)这个看似无解的傻逼问题把这个游戏变成了一坨屎。用1024x768或者更低的分辨率玩这游戏让人无法接受。如果我真的想这么做的话，那我只有把我的32/64 Mb显存的P2/P3拿出来了。(。。这东西还留着 老外很变态)仔细看看这个GTAIV，虽然有很多新技术，但也不至于让8800系列甚至是8600系列跑的如此艰难。(老外把ATI无视了) 我很确定是分辨率缩放搞得鬼。

　　更新一点说明 根据官方README 光影质量确实只和分辨率有关 这就是为什么游戏本身的限制显存不够不能开高分辨率的一个原因

　　QUOTE:

　　根据R*官方Readme上面的原话 光影质量确实和分辨率有关

　　Video Mode

　　Resolution scaling effects water, reflections, shadows, mirrors and the visible viewable distance. The resolution settings relate to the amount of available video memory. At 2560*1600 the game will require 320MB of video memory in addition to all the memory required for content. At 800*600 the game will require 32MB of video memory in addition to the content. Medium resolution settings are recommended for most users as higher settings are only usable if there is available video memory.

　　可以看出 2560*1600分辨率下的光影需要320M的显存 而800*600分辨率下的光影仅需要32M显存

　　看来国内说和剩余显存数有关的方法是没有根据的

　　The Plan:

　　There must be a way to correct this mess. Lets look at our checklist.

　　- Configs/Settings Profiles in game directory? /fail.

　　- Will R*'s patch will add more options in? /fail.

　　Not long ago I figured out you can run in windowed mode in 800x600 and then stretch the window larger and it gets around R*'s quality scaling hat would increase the reflection maps.etc that would lag the game and make objects/textures disappear and horrid pop-ins. It made the game look good because you weren't dealing with such a low resolution and the game played extremely well.

　　I wanted to look into this and see if you can achieve the same thing without stretched the window manually every time.

　　计划：

　　肯定应该有一种方法把这个问题修正，看看我们的清单(指试过的方法)

　　-直接在游戏里面进行设置/失败

　　-等R*的补丁在游戏里面加入更多的选项/失败(这几乎是不可能的)

　　不久之前 我发现可以用窗口模式以800x600的分辨率运行游戏，然后再把窗口拉伸，这样能避开R*的quality scaling(指根据分辨率大小按比例缩放反射和阴影等的质量)，这东西(指quality scaling)会提高反射贴图质量等等，使得游戏变卡，贴图和模型透明以及各种各样令人恶心的弹出错误提示框。这样做(指以低分辨率窗口模式运行然后再拉伸窗口)使游戏看起来很不错，因为一方面你不用面对如此低的反辨率(指800x600)，另一方面 游戏运行的非常好。