/// <summary>
/// Default constructor.
/// </summary>
public NativeWindow(int x, int y, uint width, uint height)
{
try {
// Open display
if ((_Display = Glx.XOpenDisplay(IntPtr.Zero)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to connect to X server");
}
Glx.XVisualInfo visual;
IntPtr config;
int[] attributes = new int[] {
Glx.DRAWABLE_TYPE, (int)Glx.WINDOW_BIT,
Glx.RENDER_TYPE, (int)Glx.RGBA_BIT,
Glx.DOUBLEBUFFER, unchecked ((int)Glx.DONT_CARE),
Glx.RED_SIZE, 1,
Glx.GREEN_SIZE, 1,
Glx.BLUE_SIZE, 1,
0
};
int screen = Glx.XDefaultScreen(_Display);
// Get basic visual
unsafe {
int[] choosenConfigCount = new int[1];
IntPtr *choosenConfigs = Glx.ChooseFBConfig(_Display, screen, attributes, choosenConfigCount);
if (choosenConfigCount[0] == 0)
{
throw new InvalidOperationException("unable to find basic visual");
}
config = *choosenConfigs;
KhronosApi.LogComment("Choosen config is 0x{0}", config.ToString("X8"));
visual = Glx.GetVisualFromFBConfig(_Display, config);
KhronosApi.LogComment("Choosen visual is {0}", visual);
Glx.XFree((IntPtr)choosenConfigs);
_InternalConfig = config;
_InternalVisual = visual;
}
Glx.XSetWindowAttributes setWindowAttrs = new Glx.XSetWindowAttributes();
IntPtr rootWindow = Glx.XRootWindow(_Display, screen);
ulong setWindowAttrFlags = /* CWBorderPixel | CWColormap | CWEventMask*/ (1L << 3) | (1L << 13) | (1L << 11);
setWindowAttrs.border_pixel = IntPtr.Zero;
setWindowAttrs.event_mask = /* StructureNotifyMask */new IntPtr(1L << 17);
setWindowAttrs.colormap = Glx.XCreateColormap(_Display, rootWindow, visual.visual, /* AllocNone */ 0);
if ((_Handle = Glx.XCreateWindow(_Display, rootWindow, x, y, (int)width, (int)height, 0, visual.depth, /* InputOutput */ 0, visual.visual, new UIntPtr(setWindowAttrFlags), ref setWindowAttrs)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create window");
}
// Assign FB configuration to window: essential to make CreateContext(IntPtr) working
_GlxHandle = Glx.CreateWindow(_Display, config, _Handle, null);
} catch {
Dispose();
throw;
}
}