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游戏默认目录下有一个叫Graphics Rules.sgr的文件,是用来根据配置决定游戏画面的,用记事本可以打开,里面有这么一条:
# The Radeon series has a very slow path for partial
# depth buffer copies. This has apparently been
# fixed for 9500 and later models in the latest drivers,
# but cannot be fixed on previous Radeons because of
# hardware limitations.
# NOTE: disabling this rule unnecessarily may lead to
# very poor graphics performance.
partialRule "Radeon"
stringMatch cardIdentity "*Radeon*"
partialRule "SlowSubrectDepthCopy" -any
stringMatch cardIdentity "*7?00*"
stringMatch cardIdentity "*8?00*"
stringMatch cardIdentity "*9000*"
stringMatch cardIdentity "*9100*"
stringMatch cardIdentity "*9200*"
stringMatch cardIdentity "*9300*"
stringMatch cardIdentity "*9400*"
stringMatch cardIdentity "ATI, Radeon"
stringMatch cardIdentity "ATI, Radeon VE"
stringMatch cardIdentity "ATI, Radeon Mobility"
stringMatch cardIdentity "ATI, Radeon FireGL"
# results in special low-impact scrolling mode.
property noPartialBackingStoreCopies true
# try to reduce the number of dirty rects.
property dirtyRectMergeFrames 8
# use black and white cursors. The Radeons seem
# to work with colour for a while, but in low
# memory situations revert to flickering.
option $Cursor $CursorBW
end
end
注释大意是说旧的Radeon系列由于硬件上的设计问题导致某些画面处理缓慢,所以如果满足这里的条件就打开一个额外的模式。
判断条件是显卡型号,9500以后就没问题了
这本身没什么问题,问题是A卡型号过了这么多年又转回来了,现在的7800,7900之类型号会被这个条件过滤成功,打开这个特殊模式。。
所以,7系列用户可能需要用记事本把这一段删掉,或者每行前面打上#注释掉,才能正常游戏。。
另外,模拟城市本身不支持强开抗锯齿,注意在控制中心里把抗锯齿调回应用程序设置 |
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