/// <summary>
/// Initializes a new instance of the <see cref="NativeDeviceContext"/> class.
/// </summary>
/// <param name='handle'>
/// A <see cref="GCHandle"/> which is used to create the device context.
/// </param>
/// <exception cref='ArgumentNullException'>
/// Is thrown when an argument passed to a method is invalid because it is <see langword="null" /> .
/// </exception>
/// <exception cref='InvalidOperationException'>
/// Is thrown when an operation cannot be performed.
/// </exception>
public NativeDeviceContext(IntPtr handle)
{
if (handle == IntPtr.Zero)
{
throw new ArgumentException("handle is IntPtr.Zero");
}
#if false
// "Force" handle creation
if (!window.IsHandleCreated && window.Handle != IntPtr.Zero)
{
throw new InvalidOperationException("invalid handle");
}
#endif
if ((_Display = Egl.GetDisplay(new IntPtr(Egl.DEFAULT_DISPLAY))) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to get display handle");
}
int[] major = new int[1], minor = new int[1];
if (Egl.Initialize(_Display, major, minor) == false)
{
throw new InvalidOperationException("unable to initialize the display");
}
_NativeWindow = handle;
_Version = new KhronosVersion(major[0], minor[0], KhronosVersion.ApiEgl);
}
/// <summary>
/// Initializes a new instance of the <see cref="NativeDeviceContext"/> class.
/// </summary>
/// <param name='window'>
/// Window.
/// </param>
/// <exception cref='ArgumentNullException'>
/// Is thrown when an argument passed to a method is invalid because it is <see langword="null" /> .
/// </exception>
/// <exception cref='InvalidOperationException'>
/// Is thrown when an operation cannot be performed.
/// </exception>
public NativeDeviceContext(Control window)
{
if (window == null)
{
throw new ArgumentNullException("window");
}
_Display = Egl.GetDisplay(IntPtr.Zero);
Egl.Initialize(_Display, null, null);
}
/// <summary>
/// This is called immediately after the surface is first created.
/// </summary>
/// <param name="holder">
/// The SurfaceHolder whose surface is being created.
/// </param>
public void SurfaceCreated(ISurfaceHolder holder)
{
// Problem with static constructors? Ensure manual initialization
Egl.Initialize(); Gl.Initialize();
// Get actual native window handle
_NativeWindowHandle = ANativeWindow_fromSurface(JNIEnv.Handle, holder.Surface.Handle);
// Create device context
_DeviceContext = DeviceContext.Create(IntPtr.Zero, _NativeWindowHandle);
_DeviceContext.IncRef();
// Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
DevicePixelFormat controlReqFormat = new DevicePixelFormat();
controlReqFormat.RgbaUnsigned = true;
controlReqFormat.RenderWindow = true;
controlReqFormat.ColorBits = 24;
//controlReqFormat.DepthBits = (int)DepthBits;
//controlReqFormat.StencilBits = (int)StencilBits;
//controlReqFormat.MultisampleBits = (int)MultisampleBits;
//controlReqFormat.DoubleBuffer = true;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException("unable to find a suitable pixel format");
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
// Create OpenGL context using compatibility profile
if ((_RenderContext = _DeviceContext.CreateContext(IntPtr.Zero)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create render context");
}
// Make context current
if (_DeviceContext.MakeCurrent(_RenderContext) == false)
{
throw new InvalidOperationException("unable to make context current");
}
// Raise relative event
OnContextCreated();
StartRendering(30.0f);
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="display">
/// A <see cref="IntPtr"/> that specifies the display handle to be passed to <see cref="Egl.GetDisplay(IntPtr)"/>.
/// </param>
protected NativeSurface(IntPtr display)
{
if ((_Display = Egl.GetDisplay(display)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to get display handle");
}
int[] major = new int[1], minor = new int[1];
if (Egl.Initialize(_Display, major, minor) == false)
{
throw new InvalidOperationException("unable to initialize the display");
}
_EglVersion = new KhronosVersion(major[0], minor[0], KhronosVersion.ApiEgl);
}
/// <summary>
/// Default constructor.
/// </summary>
protected NativeSurface()
{
try {
if ((_Display = Egl.GetDisplay(new IntPtr(Egl.DEFAULT_DISPLAY))) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to get display handle");
}
int[] major = new int[1], minor = new int[1];
if (Egl.Initialize(_Display, major, minor) == false)
{
throw new InvalidOperationException("unable to initialize the display");
}
_EglVersion = new KhronosVersion(major[0], minor[0], KhronosVersion.ApiEgl);
} catch {
Dispose();
throw;
}
}
