mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-24 20:05:39 +00:00
b6a806a568
OpenTK now directly calculates the elapsed time between UpdateFrame (RenderFrame) events and compares that directly to TargetUpdatePeriod (TargetRenderPeriod). This significantly simplifies the implementation and improves timing stability.
1069 lines
35 KiB
C#
1069 lines
35 KiB
C#
#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2009 the Open Toolkit library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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#if !MINIMAL
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using System.Drawing;
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#endif
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using System.Threading;
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using OpenTK.Graphics;
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using OpenTK.Input;
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using OpenTK.Platform;
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namespace OpenTK
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{
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/// <summary>
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/// The GameWindow class contains cross-platform methods to create and render on an OpenGL
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/// window, handle input and load resources.
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/// </summary>
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/// <remarks>
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/// GameWindow contains several events you can hook or override to add your custom logic:
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/// <list>
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/// <item>
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/// OnLoad: Occurs after creating the OpenGL context, but before entering the main loop.
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/// Override to load resources.
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/// </item>
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/// <item>
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/// OnUnload: Occurs after exiting the main loop, but before deleting the OpenGL context.
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/// Override to unload resources.
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/// </item>
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/// <item>
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/// OnResize: Occurs whenever GameWindow is resized. You should update the OpenGL Viewport
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/// and Projection Matrix here.
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/// </item>
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/// <item>
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/// OnUpdateFrame: Occurs at the specified logic update rate. Override to add your game
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/// logic.
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/// </item>
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/// <item>
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/// OnRenderFrame: Occurs at the specified frame render rate. Override to add your
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/// rendering code.
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/// </item>
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/// </list>
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/// Call the Run() method to start the application's main loop. Run(double, double) takes two
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/// parameters that
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/// specify the logic update rate, and the render update rate.
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/// </remarks>
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public class GameWindow : NativeWindow, IGameWindow, IDisposable
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{
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#region --- Fields ---
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readonly Stopwatch watch = new Stopwatch();
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IGraphicsContext glContext;
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bool isExiting = false;
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double update_period, render_period;
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double target_update_period, target_render_period;
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double update_time; // length of last UpdateFrame event
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double render_time; // length of last RenderFrame event
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double update_timestamp; // timestamp of last UpdateFrame event
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double render_timestamp; // timestamp of last RenderFrame event
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VSyncMode vsync;
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FrameEventArgs update_args = new FrameEventArgs();
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FrameEventArgs render_args = new FrameEventArgs();
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#endregion
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#region --- Contructors ---
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#region public GameWindow()
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/// <summary>Constructs a new GameWindow with sensible default attributes.</summary>
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public GameWindow()
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: this(640, 480, GraphicsMode.Default, "OpenTK Game Window", 0, DisplayDevice.Default) { }
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#endregion
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#region public GameWindow(int width, int height)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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public GameWindow(int width, int height)
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: this(width, height, GraphicsMode.Default, "OpenTK Game Window", 0, DisplayDevice.Default) { }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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public GameWindow(int width, int height, GraphicsMode mode)
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: this(width, height, mode, "OpenTK Game Window", 0, DisplayDevice.Default) { }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode, string title)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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/// <param name="title">The title of the GameWindow.</param>
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public GameWindow(int width, int height, GraphicsMode mode, string title)
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: this(width, height, mode, title, 0, DisplayDevice.Default) { }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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/// <param name="title">The title of the GameWindow.</param>
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/// <param name="options">GameWindow options regarding window appearance and behavior.</param>
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public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options)
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: this(width, height, mode, title, options, DisplayDevice.Default) { }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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/// <param name="title">The title of the GameWindow.</param>
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/// <param name="options">GameWindow options regarding window appearance and behavior.</param>
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/// <param name="device">The OpenTK.Graphics.DisplayDevice to construct the GameWindow in.</param>
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public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device)
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: this(width, height, mode, title, options, device, 1, 0, GraphicsContextFlags.Default)
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{ }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device, int major, int minor, GraphicsContextFlags flags)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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/// <param name="title">The title of the GameWindow.</param>
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/// <param name="options">GameWindow options regarding window appearance and behavior.</param>
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/// <param name="device">The OpenTK.Graphics.DisplayDevice to construct the GameWindow in.</param>
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/// <param name="major">The major version for the OpenGL GraphicsContext.</param>
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/// <param name="minor">The minor version for the OpenGL GraphicsContext.</param>
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/// <param name="flags">The GraphicsContextFlags version for the OpenGL GraphicsContext.</param>
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public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device,
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int major, int minor, GraphicsContextFlags flags)
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: this(width, height, mode, title, options, device, major, minor, flags, null)
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{ }
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#endregion
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#region public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device, int major, int minor, GraphicsContextFlags flags, IGraphicsContext sharedContext)
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/// <summary>Constructs a new GameWindow with the specified attributes.</summary>
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/// <param name="width">The width of the GameWindow in pixels.</param>
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/// <param name="height">The height of the GameWindow in pixels.</param>
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/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GameWindow.</param>
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/// <param name="title">The title of the GameWindow.</param>
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/// <param name="options">GameWindow options regarding window appearance and behavior.</param>
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/// <param name="device">The OpenTK.Graphics.DisplayDevice to construct the GameWindow in.</param>
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/// <param name="major">The major version for the OpenGL GraphicsContext.</param>
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/// <param name="minor">The minor version for the OpenGL GraphicsContext.</param>
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/// <param name="flags">The GraphicsContextFlags version for the OpenGL GraphicsContext.</param>
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/// <param name="sharedContext">An IGraphicsContext to share resources with.</param>
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public GameWindow(int width, int height, GraphicsMode mode, string title, GameWindowFlags options, DisplayDevice device,
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int major, int minor, GraphicsContextFlags flags, IGraphicsContext sharedContext)
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: base(width, height, title, options,
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mode == null ? GraphicsMode.Default : mode,
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device == null ? DisplayDevice.Default : device)
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{
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try
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{
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glContext = new GraphicsContext(mode == null ? GraphicsMode.Default : mode, WindowInfo, major, minor, flags);
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glContext.MakeCurrent(WindowInfo);
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(glContext as IGraphicsContextInternal).LoadAll();
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VSync = VSyncMode.On;
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//glWindow.WindowInfoChanged += delegate(object sender, EventArgs e) { OnWindowInfoChangedInternal(e); };
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}
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catch (Exception e)
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{
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Debug.Print(e.ToString());
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base.Dispose();
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throw;
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}
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}
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#endregion
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#endregion
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#region --- Public Members ---
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#region Methods
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#region Dispose
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/// <summary>
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/// Disposes of the GameWindow, releasing all resources consumed by it.
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/// </summary>
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public override void Dispose()
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{
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try
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{
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Dispose(true);
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}
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finally
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{
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try
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{
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if (glContext != null)
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{
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glContext.Dispose();
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glContext = null;
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}
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}
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finally
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{
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base.Dispose();
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}
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}
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GC.SuppressFinalize(this);
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}
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#endregion
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#region Exit
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/// <summary>
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/// Closes the GameWindow. Equivalent to <see cref="NativeWindow.Close"/> method.
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/// </summary>
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/// <remarks>
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/// <para>Override if you are not using <see cref="GameWindow.Run()"/>.</para>
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/// <para>If you override this method, place a call to base.Exit(), to ensure proper OpenTK shutdown.</para>
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/// </remarks>
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public virtual void Exit()
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{
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Close();
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}
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#endregion
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#region MakeCurrent
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/// <summary>
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/// Makes the GraphicsContext current on the calling thread.
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/// </summary>
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public void MakeCurrent()
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{
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EnsureUndisposed();
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Context.MakeCurrent(WindowInfo);
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}
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#endregion
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#region OnClose
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/// <summary>
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/// Called when the NativeWindow is about to close.
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/// </summary>
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/// <param name="e">
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/// The <see cref="System.ComponentModel.CancelEventArgs" /> for this event.
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/// Set e.Cancel to true in order to stop the GameWindow from closing.</param>
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protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
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{
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base.OnClosing(e);
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if (!e.Cancel)
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{
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isExiting = true;
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OnUnloadInternal(EventArgs.Empty);
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}
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}
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#endregion
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#region OnLoad
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/// <summary>
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/// Called after an OpenGL context has been established, but before entering the main loop.
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/// </summary>
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/// <param name="e">Not used.</param>
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protected virtual void OnLoad(EventArgs e)
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{
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Load(this, e);
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}
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#endregion
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#region OnUnload
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/// <summary>
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/// Called after GameWindow.Exit was called, but before destroying the OpenGL context.
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/// </summary>
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/// <param name="e">Not used.</param>
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protected virtual void OnUnload(EventArgs e)
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{
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Unload(this, e);
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}
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#endregion
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#region public void Run()
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/// <summary>
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/// Enters the game loop of the GameWindow using the maximum update rate.
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/// </summary>
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/// <seealso cref="Run(double)"/>
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public void Run()
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{
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Run(0.0, 0.0);
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}
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#endregion
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#region public void Run(double updateFrequency)
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/// <summary>
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/// Enters the game loop of the GameWindow using the specified update rate.
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/// maximum possible render frequency.
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/// </summary>
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public void Run(double updateRate)
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{
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Run(updateRate, 0.0);
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}
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#endregion
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#region public void Run(double updates_per_second, double frames_per_second)
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/// <summary>
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/// Enters the game loop of the GameWindow updating and rendering at the specified frequency.
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/// </summary>
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/// <remarks>
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/// When overriding the default game loop you should call ProcessEvents()
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/// to ensure that your GameWindow responds to operating system events.
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/// <para>
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/// Once ProcessEvents() returns, it is time to call update and render the next frame.
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/// </para>
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/// </remarks>
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/// <param name="updates_per_second">The frequency of UpdateFrame events.</param>
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/// <param name="frames_per_second">The frequency of RenderFrame events.</param>
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public void Run(double updates_per_second, double frames_per_second)
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{
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EnsureUndisposed();
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try
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{
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if (updates_per_second < 0.0 || updates_per_second > 200.0)
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throw new ArgumentOutOfRangeException("updates_per_second", updates_per_second,
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"Parameter should be inside the range [0.0, 200.0]");
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if (frames_per_second < 0.0 || frames_per_second > 200.0)
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throw new ArgumentOutOfRangeException("frames_per_second", frames_per_second,
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"Parameter should be inside the range [0.0, 200.0]");
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TargetUpdateFrequency = updates_per_second;
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TargetRenderFrequency = frames_per_second;
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Visible = true; // Make sure the GameWindow is visible.
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OnLoadInternal(EventArgs.Empty);
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OnResize(EventArgs.Empty);
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// On some platforms, ProcessEvents() does not return while the user is resizing or moving
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// the window. We can avoid this issue by raising UpdateFrame and RenderFrame events
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// whenever we encounter a size or move event.
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// Note: hack disabled. Threaded rendering provides a better solution to this issue.
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//Move += DispatchUpdateAndRenderFrame;
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//Resize += DispatchUpdateAndRenderFrame;
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Debug.Print("Entering main loop.");
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watch.Start();
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while (true)
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{
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ProcessEvents();
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if (Exists && !IsExiting)
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DispatchUpdateAndRenderFrame(this, EventArgs.Empty);
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else
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return;
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}
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}
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finally
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{
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Move -= DispatchUpdateAndRenderFrame;
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Resize -= DispatchUpdateAndRenderFrame;
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if (Exists)
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{
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// TODO: Should similar behaviour be retained, possibly on native window level?
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//while (this.Exists)
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// ProcessEvents(false);
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}
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}
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}
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void DispatchUpdateAndRenderFrame(object sender, EventArgs e)
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{
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const int max_frameskip = 10;
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int frameskip = 0;
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double timestamp = watch.Elapsed.TotalSeconds;
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do
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{
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// Raise UpdateFrame events until we catch up with our target update rate.
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double update_elapsed = MathHelper.Clamp(timestamp - update_timestamp, 0.0, 1.0);
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if (RaiseUpdateFrame(update_elapsed))
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{
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update_period = update_elapsed;
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update_timestamp = timestamp;
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timestamp = watch.Elapsed.TotalSeconds;
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update_time = timestamp - update_timestamp;
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}
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else
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{
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// We have executed enough UpdateFrame events to catch up.
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// Break and issue a RenderFrame event.
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break;
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}
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} while (++frameskip < max_frameskip);
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timestamp = watch.Elapsed.TotalSeconds;
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double render_elapsed = MathHelper.Clamp(timestamp - render_timestamp, 0.0, 1.0);
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if (RaiseRenderFrame(render_elapsed))
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{
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render_period = render_elapsed;
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render_timestamp = timestamp;
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timestamp = watch.Elapsed.TotalSeconds;
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render_time = timestamp - render_timestamp;
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}
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}
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bool RaiseUpdateFrame(double time)
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{
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if (time >= TargetUpdatePeriod)
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{
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update_args.Time = time;
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OnUpdateFrameInternal(update_args);
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return true;
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}
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return false;
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}
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bool RaiseRenderFrame(double time)
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{
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if (time >= TargetRenderPeriod)
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{
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render_args.Time = time;
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OnRenderFrameInternal(render_args);
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return true;
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}
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return false;
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}
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#endregion
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#region SwapBuffers
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/// <summary>
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/// Swaps the front and back buffer, presenting the rendered scene to the user.
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/// </summary>
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public void SwapBuffers()
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{
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EnsureUndisposed();
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this.Context.SwapBuffers();
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}
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#endregion
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#endregion
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#region Properties
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#region Context
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/// <summary>
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/// Returns the opengl IGraphicsContext associated with the current GameWindow.
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/// </summary>
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public IGraphicsContext Context
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{
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get
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{
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EnsureUndisposed();
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return glContext;
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}
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}
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#endregion
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#region IsExiting
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/// <summary>
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/// Gets a value indicating whether the shutdown sequence has been initiated
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/// for this window, by calling GameWindow.Exit() or hitting the 'close' button.
|
|
/// If this property is true, it is no longer safe to use any OpenTK.Input or
|
|
/// OpenTK.Graphics.OpenGL functions or properties.
|
|
/// </summary>
|
|
public bool IsExiting
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return isExiting;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Joysticks
|
|
|
|
/// <summary>
|
|
/// Gets a readonly IList containing all available OpenTK.Input.JoystickDevices.
|
|
/// </summary>
|
|
public IList<JoystickDevice> Joysticks
|
|
{
|
|
get { return InputDriver.Joysticks; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Keyboard
|
|
|
|
/// <summary>
|
|
/// Gets the primary Keyboard device, or null if no Keyboard exists.
|
|
/// </summary>
|
|
public KeyboardDevice Keyboard
|
|
{
|
|
get { return InputDriver.Keyboard.Count > 0 ? InputDriver.Keyboard[0] : null; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Mouse
|
|
|
|
/// <summary>
|
|
/// Gets the primary Mouse device, or null if no Mouse exists.
|
|
/// </summary>
|
|
public MouseDevice Mouse
|
|
{
|
|
get { return InputDriver.Mouse.Count > 0 ? InputDriver.Mouse[0] : null; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region --- GameWindow Timing ---
|
|
|
|
// TODO: Disabled because it is not reliable enough. Use vsync as a workaround.
|
|
|
|
//#region public bool AllowSleep
|
|
|
|
//public bool AllowSleep
|
|
//{
|
|
// get { return allow_sleep; }
|
|
// set { allow_sleep = value; }
|
|
//}
|
|
|
|
//#endregion
|
|
|
|
#region RenderFrequency
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the actual frequency of RenderFrame events, in hertz (i.e. fps or frames per second).
|
|
/// </summary>
|
|
public double RenderFrequency
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
if (render_period == 0.0)
|
|
return 1.0;
|
|
return 1.0 / render_period;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region RenderPeriod
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the period of RenderFrame events, in seconds.
|
|
/// </summary>
|
|
public double RenderPeriod
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return render_period;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region RenderTime
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the time spent in the RenderFrame function, in seconds.
|
|
/// </summary>
|
|
public double RenderTime
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return render_time;
|
|
}
|
|
protected set
|
|
{
|
|
EnsureUndisposed();
|
|
render_time = value;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region TargetRenderFrequency
|
|
|
|
/// <summary>
|
|
/// Gets or sets a double representing the target render frequency, in hertz.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>A value of 0.0 indicates that RenderFrame events are generated at the maximum possible frequency (i.e. only limited by the hardware's capabilities).</para>
|
|
/// <para>Values lower than 1.0Hz are clamped to 1.0Hz. Values higher than 200.0Hz are clamped to 200.0Hz.</para>
|
|
/// </remarks>
|
|
public double TargetRenderFrequency
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
if (TargetRenderPeriod == 0.0)
|
|
return 0.0;
|
|
return 1.0 / TargetRenderPeriod;
|
|
}
|
|
set
|
|
{
|
|
EnsureUndisposed();
|
|
if (value < 1.0)
|
|
{
|
|
TargetRenderPeriod = 0.0;
|
|
}
|
|
else if (value <= 200.0)
|
|
{
|
|
TargetRenderPeriod = 1.0 / value;
|
|
}
|
|
else Debug.Print("Target render frequency clamped to 200.0Hz."); // TODO: Where is it actually performed?
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region TargetRenderPeriod
|
|
|
|
/// <summary>
|
|
/// Gets or sets a double representing the target render period, in seconds.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>A value of 0.0 indicates that RenderFrame events are generated at the maximum possible frequency (i.e. only limited by the hardware's capabilities).</para>
|
|
/// <para>Values lower than 0.005 seconds (200Hz) are clamped to 0.0. Values higher than 1.0 seconds (1Hz) are clamped to 1.0.</para>
|
|
/// </remarks>
|
|
public double TargetRenderPeriod
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return target_render_period;
|
|
}
|
|
set
|
|
{
|
|
EnsureUndisposed();
|
|
if (value <= 0.005)
|
|
{
|
|
target_render_period = 0.0;
|
|
}
|
|
else if (value <= 1.0)
|
|
{
|
|
target_render_period = value;
|
|
}
|
|
else Debug.Print("Target render period clamped to 1.0 seconds.");
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region TargetUpdateFrequency
|
|
|
|
/// <summary>
|
|
/// Gets or sets a double representing the target update frequency, in hertz.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>A value of 0.0 indicates that UpdateFrame events are generated at the maximum possible frequency (i.e. only limited by the hardware's capabilities).</para>
|
|
/// <para>Values lower than 1.0Hz are clamped to 1.0Hz. Values higher than 200.0Hz are clamped to 200.0Hz.</para>
|
|
/// </remarks>
|
|
public double TargetUpdateFrequency
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
if (TargetUpdatePeriod == 0.0)
|
|
return 0.0;
|
|
return 1.0 / TargetUpdatePeriod;
|
|
}
|
|
set
|
|
{
|
|
EnsureUndisposed();
|
|
if (value < 1.0)
|
|
{
|
|
TargetUpdatePeriod = 0.0;
|
|
}
|
|
else if (value <= 200.0)
|
|
{
|
|
TargetUpdatePeriod = 1.0 / value;
|
|
}
|
|
else Debug.Print("Target update frequency clamped to 200.0Hz."); // TODO: Where is it actually performed?
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region TargetUpdatePeriod
|
|
|
|
/// <summary>
|
|
/// Gets or sets a double representing the target update period, in seconds.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>A value of 0.0 indicates that UpdateFrame events are generated at the maximum possible frequency (i.e. only limited by the hardware's capabilities).</para>
|
|
/// <para>Values lower than 0.005 seconds (200Hz) are clamped to 0.0. Values higher than 1.0 seconds (1Hz) are clamped to 1.0.</para>
|
|
/// </remarks>
|
|
public double TargetUpdatePeriod
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return target_update_period;
|
|
}
|
|
set
|
|
{
|
|
EnsureUndisposed();
|
|
if (value <= 0.005)
|
|
{
|
|
target_update_period = 0.0;
|
|
}
|
|
else if (value <= 1.0)
|
|
{
|
|
target_update_period = value;
|
|
}
|
|
else Debug.Print("Target update period clamped to 1.0 seconds."); // TODO: Where is it actually performed?
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region UpdateFrequency
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the frequency of UpdateFrame events, in hertz.
|
|
/// </summary>
|
|
public double UpdateFrequency
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
if (update_period == 0.0)
|
|
return 1.0;
|
|
return 1.0 / update_period;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region UpdatePeriod
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the period of UpdateFrame events, in seconds.
|
|
/// </summary>
|
|
public double UpdatePeriod
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return update_period;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region UpdateTime
|
|
|
|
/// <summary>
|
|
/// Gets a double representing the time spent in the UpdateFrame function, in seconds.
|
|
/// </summary>
|
|
public double UpdateTime
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
return update_time;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region VSync
|
|
|
|
/// <summary>
|
|
/// Gets or sets the VSyncMode.
|
|
/// </summary>
|
|
public VSyncMode VSync
|
|
{
|
|
get
|
|
{
|
|
EnsureUndisposed();
|
|
GraphicsContext.Assert();
|
|
return vsync;
|
|
}
|
|
set
|
|
{
|
|
EnsureUndisposed();
|
|
GraphicsContext.Assert();
|
|
switch (value)
|
|
{
|
|
case VSyncMode.On:
|
|
Context.SwapInterval = 1;
|
|
break;
|
|
|
|
case VSyncMode.Off:
|
|
Context.SwapInterval = 0;
|
|
break;
|
|
|
|
case VSyncMode.Adaptive:
|
|
Context.SwapInterval = -1;
|
|
break;
|
|
}
|
|
vsync = value;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region WindowState
|
|
|
|
/// <summary>
|
|
/// Gets or states the state of the NativeWindow.
|
|
/// </summary>
|
|
public override WindowState WindowState
|
|
{
|
|
get
|
|
{
|
|
return base.WindowState;
|
|
}
|
|
set
|
|
{
|
|
base.WindowState = value;
|
|
Debug.Print("Updating Context after setting WindowState to {0}", value);
|
|
|
|
if (Context != null)
|
|
Context.Update(WindowInfo);
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region Events
|
|
|
|
/// <summary>
|
|
/// Occurs before the window is displayed for the first time.
|
|
/// </summary>
|
|
public event EventHandler<EventArgs> Load = delegate { };
|
|
|
|
/// <summary>
|
|
/// Occurs when it is time to render a frame.
|
|
/// </summary>
|
|
public event EventHandler<FrameEventArgs> RenderFrame = delegate { };
|
|
|
|
/// <summary>
|
|
/// Occurs before the window is destroyed.
|
|
/// </summary>
|
|
public event EventHandler<EventArgs> Unload = delegate { };
|
|
|
|
/// <summary>
|
|
/// Occurs when it is time to update a frame.
|
|
/// </summary>
|
|
public event EventHandler<FrameEventArgs> UpdateFrame = delegate { };
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region --- Protected Members ---
|
|
|
|
#region Dispose
|
|
|
|
/// <summary>
|
|
/// Override to add custom cleanup logic.
|
|
/// </summary>
|
|
/// <param name="manual">True, if this method was called by the application; false if this was called by the finalizer thread.</param>
|
|
protected virtual void Dispose(bool manual) { }
|
|
|
|
#endregion
|
|
|
|
#region OnRenderFrame
|
|
|
|
/// <summary>
|
|
/// Called when the frame is rendered.
|
|
/// </summary>
|
|
/// <param name="e">Contains information necessary for frame rendering.</param>
|
|
/// <remarks>
|
|
/// Subscribe to the <see cref="RenderFrame"/> event instead of overriding this method.
|
|
/// </remarks>
|
|
protected virtual void OnRenderFrame(FrameEventArgs e)
|
|
{
|
|
RenderFrame(this, e);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region OnUpdateFrame
|
|
|
|
/// <summary>
|
|
/// Called when the frame is updated.
|
|
/// </summary>
|
|
/// <param name="e">Contains information necessary for frame updating.</param>
|
|
/// <remarks>
|
|
/// Subscribe to the <see cref="UpdateFrame"/> event instead of overriding this method.
|
|
/// </remarks>
|
|
protected virtual void OnUpdateFrame(FrameEventArgs e)
|
|
{
|
|
UpdateFrame(this, e);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region OnWindowInfoChanged
|
|
|
|
/// <summary>
|
|
/// Called when the WindowInfo for this GameWindow has changed.
|
|
/// </summary>
|
|
/// <param name="e">Not used.</param>
|
|
protected virtual void OnWindowInfoChanged(EventArgs e) { }
|
|
|
|
#endregion
|
|
|
|
#region OnResize
|
|
|
|
/// <summary>
|
|
/// Called when this window is resized.
|
|
/// </summary>
|
|
/// <param name="e">Not used.</param>
|
|
/// <remarks>
|
|
/// You will typically wish to update your viewport whenever
|
|
/// the window is resized. See the
|
|
/// <see cref="OpenTK.Graphics.OpenGL.GL.Viewport(int, int, int, int)"/> method.
|
|
/// </remarks>
|
|
protected override void OnResize(EventArgs e)
|
|
{
|
|
base.OnResize(e);
|
|
glContext.Update(base.WindowInfo);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region --- Private Members ---
|
|
|
|
#region OnLoadInternal
|
|
|
|
private void OnLoadInternal(EventArgs e)
|
|
{
|
|
OnLoad(e);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region OnRenderFrameInternal
|
|
|
|
private void OnRenderFrameInternal(FrameEventArgs e) { if (Exists && !isExiting) OnRenderFrame(e); }
|
|
|
|
#endregion
|
|
|
|
#region OnUnloadInternal
|
|
|
|
private void OnUnloadInternal(EventArgs e) { OnUnload(e); }
|
|
|
|
#endregion
|
|
|
|
#region OnUpdateFrameInternal
|
|
|
|
private void OnUpdateFrameInternal(FrameEventArgs e) { if (Exists && !isExiting) OnUpdateFrame(e); }
|
|
|
|
#endregion
|
|
|
|
#region OnWindowInfoChangedInternal
|
|
|
|
private void OnWindowInfoChangedInternal(EventArgs e)
|
|
{
|
|
glContext.MakeCurrent(WindowInfo);
|
|
|
|
OnWindowInfoChanged(e);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
}
|
|
|
|
#region public enum VSyncMode
|
|
|
|
/// <summary>
|
|
/// Enumerates available VSync modes.
|
|
/// </summary>
|
|
public enum VSyncMode
|
|
{
|
|
/// <summary>
|
|
/// Vsync disabled.
|
|
/// </summary>
|
|
Off = 0,
|
|
/// <summary>
|
|
/// VSync enabled.
|
|
/// </summary>
|
|
On,
|
|
/// <summary>
|
|
/// VSync enabled, unless framerate falls below one half of target framerate.
|
|
/// If no target framerate is specified, this behaves exactly like <see cref="VSyncMode.On"/>.
|
|
/// </summary>
|
|
Adaptive,
|
|
}
|
|
|
|
#endregion
|
|
}
|