public sealed override bool TryChangeResolution(DisplayDevice device, DisplayResolution resolution)
{
IntPtr display = HandleTo(device);
IntPtr currentModePtr = CG.DisplayCurrentMode(display);
if (storedModes.ContainsKey(display) == false)
{
storedModes.Add(display, currentModePtr);
}
IntPtr displayModesPtr = CG.DisplayAvailableModes(display);
CFArray displayModes = new CFArray(displayModesPtr);
for (int j = 0; j < displayModes.Count; j++)
{
CFDictionary dict = new CFDictionary(displayModes[j]);
int width = (int)dict.GetNumberValue("Width");
int height = (int)dict.GetNumberValue("Height");
int bpp = (int)dict.GetNumberValue("BitsPerPixel");
double freq = dict.GetNumberValue("RefreshRate");
if (width == resolution.Width && height == resolution.Height && bpp == resolution.BitsPerPixel && System.Math.Abs(freq - resolution.RefreshRate) < 1e-6)
{
// if (displaysCaptured.Contains(display) == false)
// {
// CG.DisplayCapture(display);
// }
Debug.Print("Changing resolution to {0}x{1}x{2}@{3}.", width, height, bpp, freq);
CG.DisplaySwitchToMode(display, displayModes[j]);
return(true);
}
}
return(false);
}
public QuartzDisplayDeviceDriver()
{
lock (display_lock)
{
// To minimize the need to add static methods to osuTK.Graphics.DisplayDevice
// we only allow settings to be set through its constructor.
// Thus, we save all necessary parameters in temporary variables
// and construct the device when every needed detail is available.
// The main DisplayDevice constructor adds the newly constructed device
// to the list of available devices.
const int maxDisplayCount = 20;
IntPtr[] displays = new IntPtr[maxDisplayCount];
int displayCount;
unsafe
{
fixed(IntPtr *displayPtr = displays)
{
CG.GetActiveDisplayList(maxDisplayCount, displayPtr, out displayCount);
}
}
Debug.Print("CoreGraphics reported {0} display(s).", displayCount);
Debug.Indent();
for (int i = 0; i < displayCount; i++)
{
IntPtr currentDisplay = displays[i];
// according to docs, first element in the array is always the
// main display.
bool primary = (i == 0);
// gets current settings
int currentWidth = CG.DisplayPixelsWide(currentDisplay);
int currentHeight = CG.DisplayPixelsHigh(currentDisplay);
Debug.Print("Display {0} is at {1}x{2}", i, currentWidth, currentHeight);
IntPtr displayModesPtr = CG.DisplayAvailableModes(currentDisplay);
CFArray displayModes = new CFArray(displayModesPtr);
Debug.Print("Supports {0} display modes.", displayModes.Count);
DisplayResolution opentk_dev_current_res = null;
List <DisplayResolution> opentk_dev_available_res = new List <DisplayResolution>();
IntPtr currentModePtr = CG.DisplayCurrentMode(currentDisplay);
CFDictionary currentMode = new CFDictionary(currentModePtr);
for (int j = 0; j < displayModes.Count; j++)
{
CFDictionary dict = new CFDictionary(displayModes[j]);
int width = (int)dict.GetNumberValue("Width");
int height = (int)dict.GetNumberValue("Height");
int bpp = (int)dict.GetNumberValue("BitsPerPixel");
double freq = dict.GetNumberValue("RefreshRate");
bool current = currentMode.Ref == dict.Ref;
if (freq <= 0)
{
IntPtr displayLink;
CV.DisplayLinkCreateWithCGDisplay(currentDisplay, out displayLink);
CVTime t = CV.DisplayLinkGetNominalOutputVideoRefreshPeriod(displayLink);
if ((t.flags & (Int32)CV.TimeFlags.TimeIsIndefinite) != (Int32)CV.TimeFlags.TimeIsIndefinite)
{
freq = (double)t.timeScale / t.timeValue;
}
CV.DisplayLinkRelease(displayLink);
}
//if (current) Debug.Write(" * ");
//else Debug.Write(" ");
//Debug.Print("Mode {0} is {1}x{2}x{3} @ {4}.", j, width, height, bpp, freq);
DisplayResolution thisRes = new DisplayResolution(0, 0, width, height, bpp, (float)freq);
opentk_dev_available_res.Add(thisRes);
if (current)
{
opentk_dev_current_res = thisRes;
}
}
NSRect bounds = CG.DisplayBounds(currentDisplay);
Rectangle newRect = new Rectangle((int)bounds.Location.X, (int)bounds.Location.Y, (int)bounds.Size.Width, (int)bounds.Size.Height);
Debug.Print("Display {0} bounds: {1}", i, newRect);
DisplayDevice opentk_dev = new DisplayDevice(opentk_dev_current_res,
primary, opentk_dev_available_res, newRect, currentDisplay);
AvailableDevices.Add(opentk_dev);
if (primary)
{
Primary = opentk_dev;
}
}
Debug.Unindent();
}
}
