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Help => General => Topic started by: dabo on August 14, 2009, 11:49:34 pm

Title: FPS cut in half on Windows 7
Post by: dabo on August 14, 2009, 11:49:34 pm

Is this normal? (compared to Windows XP)

I haven't noticed anything else slow down since I switched OS.

I have an old laptop but as I wrote, nothing else is slower than on Win XP.

Has anyone else noticed any slow-downs comparing XP and 7?

Title: FPS cut in half on Windows 7
Post by: Hiura on August 14, 2009, 11:56:56 pm

( I don't know but : ) Did you rebuild your app / SFML ?

Title: FPS cut in half on Windows 7
Post by: dabo on August 15, 2009, 03:28:12 am

Yes, both. Only difference now is that I'm using version 1.5 instead of 1.3.

Title: FPS cut in half on Windows 7
Post by: Meltra Bour on August 15, 2009, 08:12:41 am

I noticed the same on both vista and windows 7.

I'm guessing that this is because these new versions of windows os don't have *true* opengl by default. By default everything is emulated to directX calls and that is slowing down the rendering alot ... I have no clue about other gfx cards but both nvidia and ati fixed the problem by providing true opengl support with there drivers ... I have not done any testing on how to compile/link on those os's but I'm guessing the old openGL32 thing is out now.

Title: FPS cut in half on Windows 7
Post by: dabo on August 15, 2009, 02:21:06 pm

ok, I have a crappy built-in Intel graphics chipset.

When I used win XP I also got a FPS boost while running in fullscreen mode, I don't get that anymore.