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Rekrul
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Joined: 17 Oct 2002
Posts: 25
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 Posted: Wed Dec 16, 2009 3:46 am Post subject: DirectX vs. OpenGL & monitor refresh rates... |
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I'm pretty sure that this isn't a Magic Engine issue, but I'm hoping someone here might know what's going on.
I have a slightly older system which is still running Windows 98SE. Can we please skip the inevitable parade of people telling me that I need to upgrade? Thanks.
Anyway, I just tried out the latest version of Magic Engine and I noticed something annoying that I've seen happen with other programs.
I'm using a Trinitron CRT monitor and I have an Nvidia GeForce4 MX440 video card with the last drivers that support 98. In the advanced screen properties, I have the refresh rate set to Optimal, rather than Adapter Default. According to my monitor's OSD, the current refresh rate is 81.2kHz / 100Hz. The display appears 100% flicker-free to me. If I select Adapter Default, the refresh rate changes to 48.3kHz / 60Hz, the display shrinks and there's a slight, but noticeable flicker.
What does this have to do with ME you ask?
My desktop is set to 1024x768x32. When I select this same mode in ME using DirectX mode, ME simply opens. The monitor doesn't re-sync, the refresh rate doesn't change etc. If I select OpenGL, it changes the refresh rate to the same as Adapter Default, and doesn't change it back when I exit the program.
The strange thing is that when I go into the advanced screen properties, the Adapter tab is still showing the refresh rate as Optimal, even though you can clearly see that it isn't. I have to select Adapter Default, click Apply, which tricks the system into thinking I've just switched to that mode, and then tell it don't want to keep the change, so that it switches back to Optimal.
I've had other programs do this as well, and it's really annoying. Is there something about OpenGL that automatically causes the refresh rate to be lowered? Or is it just another bug in the NVidia drivers? |
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Kaminari
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Joined: 19 Apr 2002
Posts: 1432
Location: Paris, France
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Rekrul
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Joined: 17 Oct 2002
Posts: 25
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| Posted: Thu Dec 17, 2009 9:20 pm Post subject: |
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| Kaminari wrote: | | OpenGL/Direct3D refresh rates can be very unfriendly on some card/driver combinations. You might want to give a try to RefreshLock. |
Unfortunately, RefreshLock doesn't seem to work for me.
When I run it, the detected frequencies column says it can't auto-detect on this OS. The dropdown box above the window, for setting the desired refresh rate only has 0 in it. The "instruct" file makes mention of 9x users having to manually set the frequencies, but doesn't explain how to actually do that. The INI file is mostly empty, so they can't be set in there.
The FAQ says you should be using the manufacturer's drivers, so I went and tracked down the "driver" for this one (I brought it home during bulk trash pickup, works great), which were basically just a bunch of color profiles, and installed it, even though Windows would already let me select up to 1600x1200. No change.
And of course, just switching RefreshLock On, didn't do anything. |
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Chris
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Joined: 19 Apr 2002
Posts: 125
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