76641d46d6
Improved CreateDummyContext logic to detect and use the context handle of the current thread or a specified handle. Removed GetCurrentContext() methods from platform-specific context implementations (everything now goes through the relevant IPlatformFactories).
402 lines
13 KiB
C#
402 lines
13 KiB
C#
#region --- License ---
|
|
/* Licensed under the MIT/X11 license.
|
|
* Copyright (c) 2006-2008 the OpenTK Team.
|
|
* This notice may not be removed from any source distribution.
|
|
* See license.txt for licensing detailed licensing details.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Drawing;
|
|
using System.Data;
|
|
using System.Text;
|
|
using System.Windows.Forms;
|
|
|
|
using OpenTK.Platform;
|
|
using OpenTK.Graphics;
|
|
using OpenTK.Graphics.OpenGL;
|
|
using System.Diagnostics;
|
|
|
|
namespace OpenTK
|
|
{
|
|
/// <summary>
|
|
/// Defines a UserControl with OpenGL rendering capabilities.
|
|
/// </summary>
|
|
public partial class GLControl : UserControl
|
|
{
|
|
IGraphicsContext context;
|
|
IGLControl implementation;
|
|
GraphicsMode format;
|
|
IWindowInfo window_info;
|
|
int major, minor;
|
|
GraphicsContextFlags flags;
|
|
|
|
#region --- Constructors ---
|
|
|
|
/// <summary>
|
|
/// Constructs a new GLControl.
|
|
/// </summary>
|
|
public GLControl()
|
|
: this(GraphicsMode.Default)
|
|
{ }
|
|
|
|
/// <summary>
|
|
/// Constructs a new GLControl with the specified GraphicsMode.
|
|
/// </summary>
|
|
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the control.</param>
|
|
public GLControl(GraphicsMode mode)
|
|
: this(mode, 1, 0, GraphicsContextFlags.Default)
|
|
{ }
|
|
|
|
/// <summary>
|
|
/// Constructs a new GLControl with the specified GraphicsMode.
|
|
/// </summary>
|
|
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the control.</param>
|
|
/// <param name="major">The major version for the OpenGL GraphicsContext.</param>
|
|
/// <param name="minor">The minor version for the OpenGL GraphicsContext.</param>
|
|
/// <param name="flags">The GraphicsContextFlags for the OpenGL GraphicsContext.</param>
|
|
public GLControl(GraphicsMode mode, int major, int minor, GraphicsContextFlags flags)
|
|
{
|
|
SetStyle(ControlStyles.Opaque, true);
|
|
SetStyle(ControlStyles.UserPaint, true);
|
|
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
|
|
DoubleBuffered = false;
|
|
|
|
InitializeComponent();
|
|
|
|
this.format = mode;
|
|
this.major = major;
|
|
this.minor = minor;
|
|
this.flags = flags;
|
|
|
|
// On Windows, you first need to create the window, then set the pixel format.
|
|
// On X11, you first need to select the visual, then create the window.
|
|
// On OSX, the pixel format needs to be selected before the GL context.
|
|
// Right now, pixel formats/visuals are selected during context creation. In the future,
|
|
// it would be better to decouple selection from context creation, which will allow us
|
|
// to clean up this hacky code. The best option is to do this along with multisampling
|
|
// support.
|
|
if (DesignMode)
|
|
implementation = new Platform.Dummy.DummyGLControl();
|
|
else
|
|
implementation = Platform.Factory.CreateGLControl(mode, this);
|
|
|
|
this.CreateControl();
|
|
}
|
|
|
|
#region Obsolete
|
|
|
|
/// <summary>This method is obsolete and will be removed in future versions.</summary>
|
|
/// <param name="mode">Obsolete.</param>v
|
|
[Obsolete]
|
|
public GLControl(DisplayMode mode)
|
|
: this(mode.ToGraphicsMode())
|
|
{ }
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region --- Protected Methods ---
|
|
|
|
/// <summary>Raises the HandleCreated event.</summary>
|
|
/// <param name="e">Not used.</param>
|
|
protected override void OnHandleCreated(EventArgs e)
|
|
{
|
|
base.OnHandleCreated(e);
|
|
|
|
this.Context = implementation.CreateContext(major, minor, flags);
|
|
|
|
this.window_info = implementation.WindowInfo;
|
|
this.MakeCurrent();
|
|
((IGraphicsContextInternal)this.Context).LoadAll();
|
|
}
|
|
|
|
/// <summary>Raises the HandleDestroyed event.</summary>
|
|
/// <param name="e">Not used.</param>
|
|
protected override void OnHandleDestroyed(EventArgs e)
|
|
{
|
|
base.OnHandleDestroyed(e);
|
|
if (this.Context != null)
|
|
{
|
|
this.Context.Dispose();
|
|
this.Context = null;
|
|
}
|
|
this.window_info.Dispose();
|
|
this.window_info = null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the System.Windows.Forms.Control.Paint event.
|
|
/// </summary>
|
|
/// <param name="e">A System.Windows.Forms.PaintEventArgs that contains the event data.</param>
|
|
protected override void OnPaint(PaintEventArgs e)
|
|
{
|
|
if (DesignMode)
|
|
e.Graphics.Clear(BackColor);
|
|
|
|
base.OnPaint(e);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the Resize event.
|
|
/// </summary>
|
|
/// <param name="e">A System.EventArgs that contains the event data.</param>
|
|
protected override void OnResize(EventArgs e)
|
|
{
|
|
if (context != null)
|
|
context.Update(window_info);
|
|
|
|
base.OnResize(e);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the ParentChanged event.
|
|
/// </summary>
|
|
/// <param name="e">A System.EventArgs that contains the event data.</param>
|
|
protected override void OnParentChanged(EventArgs e)
|
|
{
|
|
if (context != null)
|
|
context.Update(window_info);
|
|
|
|
base.OnParentChanged(e);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region --- Public Methods ---
|
|
|
|
#region public void SwapBuffers()
|
|
|
|
/// <summary>
|
|
/// Swaps the front and back buffers, presenting the rendered scene to the screen.
|
|
/// </summary>
|
|
public void SwapBuffers()
|
|
{
|
|
Context.SwapBuffers();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public void MakeCurrent()
|
|
|
|
/// <summary>
|
|
/// Makes the underlying this GLControl current in the calling thread.
|
|
/// All OpenGL commands issued are hereafter interpreted by this GLControl.
|
|
/// </summary>
|
|
public void MakeCurrent()
|
|
{
|
|
this.Context.MakeCurrent(this.window_info);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public void CreateContext()
|
|
|
|
/// <summary>
|
|
/// Creates a GraphicsContext and attaches it to this GLControl.
|
|
/// </summary>
|
|
public void CreateContext()
|
|
{
|
|
// Todo: This function seems unused. Should we remove it?
|
|
|
|
if (context != null) throw new InvalidOperationException("GLControl already contains an OpenGL context.");
|
|
if (format == null) format = GraphicsMode.Default;
|
|
|
|
if (!this.DesignMode)
|
|
{
|
|
// Note: Mono's implementation of Windows.Forms on X11 does not allow the context to
|
|
// have a different colordepth from the parent window.
|
|
//context = new GraphicsContext(format, helper.WindowInfo);
|
|
if (Configuration.RunningOnX11)
|
|
{
|
|
//OpenTK.Platform.X11.X11WindowInfo info =
|
|
// (context as IGraphicsContextInternal).Info as OpenTK.Platform.X11.X11WindowInfo;
|
|
//IntPtr visual = info.VisualInfo.visual;
|
|
//IntPtr colormap = OpenTK.Platform.X11.API.CreateColormap(info.Display, info.RootWindow, visual, 0);
|
|
//IntPtr visual = ((OpenTK.Platform.X11.X11WindowInfo)helper.WindowInfo).VisualInfo.visual;
|
|
//IntPtr colormap = OpenTK.Platform.X11.API.CreateColormap(info.Display, info.RootWindow, visual, 0);
|
|
|
|
//Type xplatui = Type.GetType("System.Windows.Forms.XplatUIX11, System.Windows.Forms");
|
|
//if (xplatui == null)
|
|
// throw new PlatformNotSupportedException(
|
|
// "System.Windows.Forms.XplatUIX11 missing. Unsupported platform or Mono runtime version, aborting.");
|
|
|
|
//xplatui.GetField("CustomVisual",
|
|
// System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)
|
|
// .SetValue(null, visual);
|
|
|
|
//xplatui.GetField("CustomColormap",
|
|
// System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)
|
|
// .SetValue(null, colormap);
|
|
|
|
//Debug.Print("Mono/X11 System.Windows.Forms custom visual and colormap installed succesfully.");
|
|
}
|
|
}
|
|
else
|
|
context = new Platform.Dummy.DummyGLContext();
|
|
|
|
this.MakeCurrent();
|
|
(context as IGraphicsContextInternal).LoadAll();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public void DestroyContext()
|
|
|
|
/// <summary>
|
|
/// Destroys the GraphicsContext attached to this GLControl.
|
|
/// </summary>
|
|
/// <exception cref="NullReferenceException">Occurs when no GraphicsContext is attached.</exception>
|
|
public void DestroyContext()
|
|
{
|
|
Context.Dispose();
|
|
Context = null;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public bool IsIdle
|
|
|
|
/// <summary>
|
|
/// Gets a value indicating whether the current thread contains pending system messages.
|
|
/// </summary>
|
|
[Browsable(false)]
|
|
public bool IsIdle
|
|
{
|
|
get { return implementation.IsIdle; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public IGraphicsContext Context
|
|
|
|
/// <summary>
|
|
/// Gets an interface to the underlying GraphicsContext used by this GLControl.
|
|
/// </summary>
|
|
[Browsable(false)]
|
|
public IGraphicsContext Context
|
|
{
|
|
get { return context; }
|
|
private set { context = value; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public float AspectRatio
|
|
|
|
/// <summary>
|
|
/// Gets the aspect ratio of this GLControl.
|
|
/// </summary>
|
|
[Description("The aspect ratio of the client area of this GLControl.")]
|
|
public float AspectRatio
|
|
{
|
|
get
|
|
{
|
|
return this.ClientSize.Width / (float)this.ClientSize.Height;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public bool VSync
|
|
|
|
/// <summary>
|
|
/// Gets or sets a value indicating whether vsync is active for this GLControl.
|
|
/// </summary>
|
|
[Description("Indicates whether GLControl updates are synced to the monitor's refresh.")]
|
|
public bool VSync
|
|
{
|
|
get
|
|
{
|
|
if (Context != null)
|
|
return Context.VSync;
|
|
return false;
|
|
}
|
|
set
|
|
{
|
|
if (Context != null)
|
|
Context.VSync = value;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public GraphicsMode GraphicsMode
|
|
|
|
/// <summary>
|
|
/// Gets the GraphicsMode of the GraphicsContext attached to this GLControl.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// To change the GraphicsMode, you must destroy and recreate the GLControl.
|
|
/// </remarks>
|
|
public GraphicsMode GraphicsMode
|
|
{
|
|
get { return Context.GraphicsMode; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region public Bitmap GrabScreenshot()
|
|
|
|
/// <summary>Grabs a screenshot of the frontbuffer contents.</summary>
|
|
/// <returns>A System.Drawing.Bitmap, containing the contents of the frontbuffer.</returns>
|
|
/// <exception cref="GraphicsContextException">
|
|
/// Occurs when no OpenTK.Graphics.GraphicsContext is current in the calling thread.
|
|
/// </exception>
|
|
public Bitmap GrabScreenshot()
|
|
{
|
|
Bitmap bmp = new Bitmap(this.ClientSize.Width, this.ClientSize.Height);
|
|
System.Drawing.Imaging.BitmapData data =
|
|
bmp.LockBits(this.ClientRectangle, System.Drawing.Imaging.ImageLockMode.WriteOnly,
|
|
System.Drawing.Imaging.PixelFormat.Format24bppRgb);
|
|
GL.ReadPixels(0, 0, this.ClientSize.Width, this.ClientSize.Height, PixelFormat.Bgr, PixelType.UnsignedByte,
|
|
data.Scan0);
|
|
bmp.UnlockBits(data);
|
|
bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
|
|
return bmp;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
}
|
|
|
|
#region internal interface IPlatformIdle
|
|
#if false
|
|
internal interface IPlatformIdle
|
|
{
|
|
bool IsIdle { get; }
|
|
}
|
|
|
|
internal class X11PlatformIdle : IPlatformIdle
|
|
{
|
|
object get_lock = new object();
|
|
IntPtr display;
|
|
|
|
public X11PlatformIdle(WindowInfo info)
|
|
{
|
|
display = new OpenTK.Platform.X11.WindowInfo(info).Display;//((OpenTK.Platform.X11.WindowInfo)info).Display;
|
|
}
|
|
|
|
#region IPlatformIdle Members
|
|
|
|
public bool IsIdle
|
|
{
|
|
get
|
|
{
|
|
lock (get_lock)
|
|
{
|
|
return OpenTK.Platform.X11.Functions.XPending(display) == 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
#endif
|
|
|
|
#endregion
|
|
}
|