public void OnShow()
{
_contextPtr = OpenGl.GlXCreateContext(_window.NativeHandle, ref _visualInfo, IntPtr.Zero, true);
OpenGl.GlXMakeCurrent(_window.NativeHandle, _window.WindowId, _contextPtr);
WindowExtensions.LoadDefaultOpenGLFunctions();
}
public IntPtr GetFunctionPtr(string functionName)
{
var address = OpenGl.GlXGetProcAddress(functionName);
if (address == IntPtr.Zero)
{
address = OpenGl.GlXGetProcAddressArb(functionName);
}
return(address);
}
public X11.XVisualInfo GetVisualInfo(X11.XDisplay display)
{
var attributes = new[] {
4 /*GLX_RGBA*/, 1,
5 /*GLX_DOUBLEBUFFER*/, 1,
12 /*GLX_DEPTH_SIZE*/, 24,
0
};
var visualInfoPtr = OpenGl.GlXChooseVisual(_window.NativeHandle, display.default_screen, attributes);
_visualInfo = Marshal.PtrToStructure <X11.XVisualInfo>(visualInfoPtr);
_display = display;
return(_visualInfo);
}
public IReadOnlyList <string> GetPlatformExtensions()
{
var extensions = OpenGl.GlXQueryExtensionsString(_window.NativeHandle, _display.default_screen);
return(extensions.Split(' '));
}
public void Cleanup()
{
OpenGl.GlXMakeCurrent(_window.NativeHandle, 0, IntPtr.Zero);
OpenGl.GlXDestroyContext(_window.NativeHandle, _contextPtr);
WindowExtensions.Cleanup();
}
public void SwapBuffers()
{
OpenGl.GlXSwapBuffers(_window.NativeHandle, _window.WindowId);
}
