Ogre Forums

Hi, it would be nice to have support for setting different values to PresentationInterval during initialization of DX. In some scenes in my application I have problem with fps which is sometimes below 60. I have 60Hz refresh rate on my LCD and when fps decreases below 60 it is very visible on camera movement - I see some ticks in movement .. movement is not smooth. So I tried to set different value - D3DPRESENT_INTERVAL_TWO - so my fps was one half of refresh rate of monitor and every movement was really smooth because every scene im my application runs above 30fps, so I get stable fps with this settings.

Ok, this is the knid of thing we'd normally expose via the named params, but it's a little more complicated since the driver is not guaranteed to support this option, so it would need checking. The equivalent on GL is asking for _wglSwapIntervalEXT(2) (not sure about the GLX / OSX version).

This is supported now as the "vsyncInterval" setting, defaults to 1. I found that D3D9 would just crash if you tried to use anything other than 1 in windowed mode though, regardless of what the device caps said, so it's only respected in full screen mode. In GL it works in both windowed and fullscreen modes.

great news thanks a lot.