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Implemented default refresh rate discovery.

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the_fiddler 2008-01-25 15:04:10 +00:00
parent 38840cf404
commit 00e0b6ce52
1 changed files with 49 additions and 22 deletions
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47
Source/OpenTK/Platform/X11/X11XrandrDisplayDevice.cs
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@ -26,12 +26,31 @@ namespace OpenTK.Platform.X11
// Get available resolutions. Then, for each resolution get all // Get available resolutions. Then, for each resolution get all
// available rates. // available rates.
// TODO: Find a way to get all available depths, too. // TODO: Find a way to get all available depths, too.
// TODO: Global X11 lock.
//lock (display_lock) // TODO: Global X11 lock.
{
for (int screen = 0; screen < API.ScreenCount; screen++) for (int screen = 0; screen < API.ScreenCount; screen++)
{ {
List<DisplayResolution> resolutions = new List<DisplayResolution>(); List<DisplayResolution> available_res;
float refreshRate;
FindAvailableResolutions(screen, out available_res);
FindCurrentRefreshRate(screen, out refreshRate);
// The default resolution (but not refresh rate) is the first one in available_res.
// Its refresh rate is discovered by the FindCurrentRefreshRate call.
new DisplayDevice(new DisplayResolution(available_res[0].Width, available_res[0].Height, 24, refreshRate),
screen == API.DefaultScreen, available_res);
}
}
internal X11XrandrDisplayDevice() { }
#endregion
#region --- Private Methods ---
#region static void FindAvailableResolutions(int screen, out List<DisplayResolution> resolutions)
static void FindAvailableResolutions(int screen, out List<DisplayResolution> resolutions)
{
resolutions = new List<DisplayResolution>();
unsafe unsafe
{ {
XRRScreenSize[] array = Functions.XRRSizes(API.DefaultDisplay, screen); XRRScreenSize[] array = Functions.XRRSizes(API.DefaultDisplay, screen);
@ -42,20 +61,28 @@ namespace OpenTK.Platform.X11
foreach (XRRScreenSize size in array) foreach (XRRScreenSize size in array)
{ {
short[] rates = Functions.XRRRates(API.DefaultDisplay, screen, resolution); short[] rates = Functions.XRRRates(API.DefaultDisplay, screen, resolution);
// TODO: Is the rate != 0 conditional correct? It seems that XRRRates returns 0
// for modes that are larger than the screen can support (?)
foreach (short rate in rates) foreach (short rate in rates)
if (rate != 0)
resolutions.Add(new DisplayResolution(size.Width, size.Height, 24, (float)rate)); resolutions.Add(new DisplayResolution(size.Width, size.Height, 24, (float)rate));
++resolution; ++resolution;
} }
} }
// Construct a default device for testing purposes.
new DisplayDevice(resolutions[0], screen == API.DefaultScreen, resolutions);
}
}
} }
public X11XrandrDisplayDevice() #endregion
static void FindCurrentRefreshRate(int screen, out float refreshRate)
{ {
IntPtr screen_config_ptr = Functions.XRRGetScreenInfo(API.DefaultDisplay, API.RootWindow);
ushort rotation = 0;
int size = Functions.XRRConfigCurrentConfiguration(screen_config_ptr, ref rotation);
short rate = Functions.XRRConfigCurrentRate(screen_config_ptr);
Functions.XRRFreeScreenConfigInfo(screen_config_ptr);
refreshRate = (float)rate;
} }
#endregion #endregion