public bool TryChangeResolution(DisplayDevice device, DisplayResolution resolution)
{
IntPtr display = displayMap[device];
IntPtr currentModePtr = CG.CGDisplayCurrentMode(display);
if (!storedModes.ContainsKey(display))
{
storedModes.Add(display, currentModePtr);
}
IntPtr displayModesPtr = CG.CGDisplayAvailableModes(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 && Math.Abs(freq - resolution.RefreshRate) < 1e-6)
{
if (!displaysCaptured.Contains(display))
{
CG.CGDisplayCapture(display);
}
Debug.Print("Changing resolution to {0}x{1}x{2}@{3}.", width, height, bpp, freq);
CG.CGDisplaySwitchToMode(display, displayModes[j]);
return(true);
}
}
return(false);
}
internal unsafe static void Init()
{
// To minimize the need to add static methods to OpenTK.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;
fixed(IntPtr *displayPtr = displays)
{
CG.CGGetActiveDisplayList(maxDisplayCount, displayPtr, out displayCount);
}
Debug.Print("CoreGraphics reported {0} display(s).", displayCount);
for (int i = 0; i < displayCount; i++)
{
IntPtr curDisplay = displays[i];
// according to docs, first element in the array is always the main display.
bool primary = (i == 0);
if (primary)
{
mainDisplay = curDisplay;
}
// gets current settings
int currentWidth = CG.CGDisplayPixelsWide(curDisplay);
int currentHeight = CG.CGDisplayPixelsHigh(curDisplay);
Debug.Print("Display {0} is at {1}x{2}", i, currentWidth, currentHeight);
IntPtr displayModesPtr = CG.CGDisplayAvailableModes(curDisplay);
CFArray displayModes = new CFArray(displayModesPtr);
Debug.Print("Supports {0} display modes.", displayModes.Count);
DisplayResolution opentk_dev_current_res = null;
IntPtr currentModePtr = CG.CGDisplayCurrentMode(curDisplay);
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.DictRef == dict.DictRef;
if (current)
{
opentk_dev_current_res = new DisplayResolution(width, height, bpp, (float)freq);
}
}
HIRect bounds = CG.CGDisplayBounds(curDisplay);
Rectangle newRect = new Rectangle(
(int)bounds.Origin.X, (int)bounds.Origin.Y, (int)bounds.Size.X, (int)bounds.Size.Y);
Debug.Print("Display {0} bounds: {1}", i, newRect);
DisplayDevice opentk_dev = new DisplayDevice(opentk_dev_current_res, primary);
opentk_dev.Bounds = newRect;
opentk_dev.Metadata = curDisplay;
}
}
