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Now saves DisplayDevice<->X11 screen, DisplayResolution<->resolution_index mappings. Added support for resolution changes.

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the_fiddler 2008-01-26 10:29:13 +00:00
parent 36e4909a11
commit 8e3ccb8082
1 changed files with 93 additions and 55 deletions
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146
Source/OpenTK/Platform/X11/X11XrandrDisplayDevice.cs
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@ -18,6 +18,19 @@ namespace OpenTK.Platform.X11
internal class X11XrandrDisplayDevice : IDisplayDeviceDriver internal class X11XrandrDisplayDevice : IDisplayDeviceDriver
{ {
static object display_lock = new object(); static object display_lock = new object();
int current_size = -1; // current_size == -1 means it hasn't been changed.
int current_refresh;
// Store a mapping between resolutions and their respective
// size_index (needed for XRRSetScreenConfig). The size_index
// is simply the sequence number of the resolution as returned by
// XRRSizes. This is done per available screen.
// The default size for all screens is 0 - no need to store that separately.
static List<Dictionary<DisplayResolution, int>> screenResolutionToIndex =
new List<Dictionary<DisplayResolution, int>>();
// Store a mapping between DisplayDevices and X11 screens.
static Dictionary<DisplayDevice, int> deviceToScreen = new Dictionary<DisplayDevice, int>();
// Keep the time when the config of each screen was last updated.
static List<uint> lastConfigUpdate = new List<uint>();
#region --- Constructors --- #region --- Constructors ---
@ -29,21 +42,44 @@ namespace OpenTK.Platform.X11
// TODO: Global X11 lock. // TODO: Global X11 lock.
for (int screen = 0; screen < API.ScreenCount; screen++) for (int screen = 0; screen < API.ScreenCount; screen++)
{ {
List<DisplayResolution> available_res; uint timestamp_of_last_update;
int[] depths; Functions.XRRTimes(API.DefaultDisplay, screen, out timestamp_of_last_update);
float refreshRate; lastConfigUpdate.Add(timestamp_of_last_update);
int currentDepth;
FindAvailableDepths(screen, out depths); List<DisplayResolution> available_res = new List<DisplayResolution>();
FindAvailableResolutions(screen, depths, out available_res);
FindCurrentRefreshRate(screen, out refreshRate); // Add info for a new screen.
FindCurrentDepth(screen, out currentDepth); screenResolutionToIndex.Add(new Dictionary<DisplayResolution, int>());
int[] depths = FindAvailableDepths(screen);
int resolution_count = 0;
foreach (XRRScreenSize size in FindAvailableResolutions(screen))
{
short[] rates = Functions.XRRRates(API.DefaultDisplay, screen, resolution_count);
// It seems that XRRRates returns 0 for modes that are larger than the screen
// can support, as well as for all supported modes. On Ubuntu 7.10 the tool
// "Screens and Graphics" does report these modes, though.
foreach (short rate in rates)
{
if (rate != 0)
foreach (int depth in depths)
available_res.Add(new DisplayResolution(size.Width, size.Height, depth, (float)rate));
}
// Keep the index of this resolution - we will need it for resolution changes later.
screenResolutionToIndex[screen].Add(available_res[resolution_count], resolution_count);
++resolution_count;
}
float current_refresh_rate = FindCurrentRefreshRate(screen);
int current_depth = FindCurrentDepth(screen);
// The default resolution (but not refresh rate) is the first one in available_res. // The default resolution (but not refresh rate) is the first one in available_res.
// Its refresh rate is discovered by the FindCurrentRefreshRate call. // Its refresh rate is discovered by the FindCurrentRefreshRate call.
// Its depth is discovered by the FindCurrentDepth call. // Its depth is discovered by the FindCurrentDepth call.
new DisplayDevice(new DisplayResolution(available_res[0].Width, available_res[0].Height, currentDepth, refreshRate), deviceToScreen.Add(new DisplayDevice(new DisplayResolution(available_res[0].Width, available_res[0].Height, current_depth, current_refresh_rate),
screen == API.DefaultScreen, available_res); screen == API.DefaultScreen, available_res), screen);
} }
} }
@ -53,64 +89,47 @@ namespace OpenTK.Platform.X11
#region --- Private Methods --- #region --- Private Methods ---
#region static void FindAvailableResolutions(int screen, out List<DisplayResolution> resolutions) #region static int[] FindAvailableDepths(int screen)
static void FindAvailableResolutions(int screen, int[] depths, out List<DisplayResolution> resolutions) static int[] FindAvailableDepths(int screen)
{ {
resolutions = new List<DisplayResolution>(); return Functions.XListDepths(API.DefaultDisplay, screen);
unsafe
{
XRRScreenSize[] array = Functions.XRRSizes(API.DefaultDisplay, screen);
if (array == null)
throw new NotSupportedException("XRandR extensions not available.");
int resolution = 0;
foreach (XRRScreenSize size in array)
{
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)
if (rate != 0)
foreach (int depth in depths)
resolutions.Add(new DisplayResolution(size.Width, size.Height, depth, (float)rate));
++resolution;
}
}
} }
#endregion #endregion
#region static void FindCurrentRefreshRate(int screen, out float refreshRate) #region static XRRScreenSize[] FindAvailableResolutions(int screen)
static void FindCurrentRefreshRate(int screen, out float refreshRate) static XRRScreenSize[] FindAvailableResolutions(int screen)
{ {
IntPtr screen_config_ptr = Functions.XRRGetScreenInfo(API.DefaultDisplay, API.RootWindow); XRRScreenSize[] resolutions = Functions.XRRSizes(API.DefaultDisplay, screen);
if (resolutions == null)
throw new NotSupportedException("XRandR extensions not available.");
return resolutions;
}
#endregion
#region static float FindCurrentRefreshRate(int screen)
static float FindCurrentRefreshRate(int screen)
{
IntPtr screen_config = Functions.XRRGetScreenInfo(API.DefaultDisplay, API.RootWindow);
ushort rotation = 0; ushort rotation = 0;
int size = Functions.XRRConfigCurrentConfiguration(screen_config_ptr, ref rotation); int size = Functions.XRRConfigCurrentConfiguration(screen_config, out rotation);
short rate = Functions.XRRConfigCurrentRate(screen_config_ptr); short rate = Functions.XRRConfigCurrentRate(screen_config);
Functions.XRRFreeScreenConfigInfo(screen_config_ptr); Functions.XRRFreeScreenConfigInfo(screen_config);
refreshRate = (float)rate; return (float)rate;
} }
#endregion #endregion
#region private static void FindAvailableDepths(int screen, out int[] depths) #region private static int FindCurrentDepth(int screen)
private static void FindAvailableDepths(int screen, out int[] depths) private static int FindCurrentDepth(int screen)
{ {
depths = Functions.XListDepths(API.DefaultDisplay, screen); return (int)Functions.XDefaultDepth(API.DefaultDisplay, screen);
}
#endregion
#region private static void FindCurrentDepth(int screen, out int current_depth)
private static void FindCurrentDepth(int screen, out int current_depth)
{
current_depth = (int)Functions.XDefaultDepth(API.DefaultDisplay, screen);
} }
#endregion #endregion
@ -121,12 +140,31 @@ namespace OpenTK.Platform.X11
public bool TryChangeResolution(DisplayDevice device, DisplayResolution resolution) public bool TryChangeResolution(DisplayDevice device, DisplayResolution resolution)
{ {
return false; // If resolution == null, restore to default resolution (new_resolution_index = 0).
int screen = deviceToScreen[device];
IntPtr root = Functions.XRootWindow(API.DefaultDisplay, screen);
IntPtr screen_config = Functions.XRRGetScreenInfo(API.DefaultDisplay, root);
ushort current_rotation;
int current_resolution_index = Functions.XRRConfigCurrentConfiguration(screen_config, out current_rotation);
int new_resolution_index;
if (resolution != null)
new_resolution_index = screenResolutionToIndex[screen]
[new DisplayResolution(resolution.Width, resolution.Height, resolution.BitsPerPixel, 0)];
else
new_resolution_index = 0;
Debug.Print("Changing size of screen {0} from {1} to {2}",
screen, current_resolution_index, new_resolution_index);
return 0 == Functions.XRRSetScreenConfigAndRate(API.DefaultDisplay, screen_config, root, new_resolution_index,
current_rotation, (short)resolution.RefreshRate, lastConfigUpdate[screen]);
} }
public void RestoreResolution(DisplayDevice device) public void RestoreResolution(DisplayDevice device)
{ {
TryChangeResolution(device, null);
} }
#endregion #endregion