我想在WPF窗口或WinForm上创建渲染循环。因此我想使用SharpGL(https://sharpgl.codeplex.com/)。为了使我的循环我做了一个线程:
public void Run()
{
IsRunning = true;
this.Initialize();
while (IsRunning)
{
Render(/* arguments here */);
// pausing and stuff
}
Dispose();
}
在渲染中,我想将绘制调用发送到GPU。到目前为止没有问题。但Winforms和WPF需要自己的线程和循环。因此,我不能只使用之前使用的LWJGL(https://www.lwjgl.org/)创建一个Window并使用Java绘制。我必须启动另一个线程,在应用程序中运行Form(我删除了错误处理以使其缩短):
[STAThread]
private void HostWinFormsApplication()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(true);
// get Display
Display = Engine.MainModule.Resolve<IDisplay>();
Display.Initialize();
Display.Closing += (s, e) => Stop();
Application.Run(Display as Form);
}
当我的渲染器想要访问我的Form上的OpenGL-Control并使用它时,会发生错误,因为WinForms(和WPF)不希望其他Thread操纵它们的控件。所以也许一个Invoke是一个选项,但这会延迟我的drawcalls并成为瓶颈。 定时器也不是一个选项,因为它不准确和不灵活......而我根本不喜欢它。 并且可以在Window Code中执行所有操作,但我希望应用程序独立于其Display,以便可以更改它。它应该是具有显示器而不是显示器运行应用程序的应用程序。 在LWJGL中,我只能创建并初始化一个Display,然后简单地使用它。唯一要考虑的是更新它,一切都很顺利。 所以我只想在我的渲染线程中创建一个Window并绘制到。如果我这样做,窗口就会变得无法使用和灰色,因为它需要这个.Net-Loop。有没有可能意识到或有人知道另一种创建Windows的方法吗?我可以手动处理窗口循环吗?
欢迎任何想法。
如果有一种方法可以使用WPF窗口来实现这一点,那就太棒了。然后我可以有一个OpenGL控件和所有WPF-Stuff来制作一个编辑器!
答案 0 :(得分:1)
解决方案是致电
Application.DoEvents();
有人告诉我,手动在我的渲染循环中。所以我没有必要使用Application.Run
并且能够在循环的线程中使用我的表单:
public void Run()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(true);
IsRunning = true;
this.Initialize();
MyForm = new CoolRenderForm();
MyForm.Show();
while (IsRunning)
{
Render(/* arguments here */);
Application.DoEvents();
// refresh form
// pausing and stuff
}
Dispose();
}
答案 1 :(得分:0)
根据我的问题:How to make a render loop in WPF?
WPF渲染循环
执行此操作的最佳方法是使用静态
提供的每帧回调 CompositionTarget.Rendering event.
WinForms渲染循环
下面是我基于this blog post创建的WinForms渲染循环类的代码:
只需使用:
WinFormsAppIdleHandler.Instance.ApplicationLoopDoWork += Instance_ApplicationLoopDoWork;
WinFormsAppIdleHandler.Instance.Enabled = true;
班级:
using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;
namespace Utilities.UI
{
/// <summary>
/// WinFormsAppIdleHandler implements a WinForms Render Loop (max FPS possible).
/// Reference: http://blogs.msdn.com/b/tmiller/archive/2005/05/05/415008.aspx
/// </summary>
public sealed class WinFormsAppIdleHandler
{
private readonly object _completedEventLock = new object();
private event EventHandler _applicationLoopDoWork;
//PRIVATE Constructor
private WinFormsAppIdleHandler()
{
Enabled = false;
SleepTime = 5; //You can play/test with this value
Application.Idle += Application_Idle;
}
/// <summary>
/// Singleton from:
/// http://csharpindepth.com/Articles/General/Singleton.aspx
/// </summary>
private static readonly Lazy<WinFormsAppIdleHandler> lazy = new Lazy<WinFormsAppIdleHandler>(() => new WinFormsAppIdleHandler());
public static WinFormsAppIdleHandler Instance { get { return lazy.Value; } }
/// <summary>
/// Gets or sets if must fire ApplicationLoopDoWork event.
/// </summary>
public bool Enabled { get; set; }
/// <summary>
/// Gets or sets the minimum time betwen ApplicationLoopDoWork fires.
/// </summary>
public int SleepTime { get; set; }
/// <summary>
/// Fires while the UI is free to work. Sleeps for "SleepTime" ms.
/// </summary>
public event EventHandler ApplicationLoopDoWork
{
//Reason of using locks:
//http://stackoverflow.com/questions/1037811/c-thread-safe-events
add
{
lock (_completedEventLock)
_applicationLoopDoWork += value;
}
remove
{
lock (_completedEventLock)
_applicationLoopDoWork -= value;
}
}
/// <summary>
/// FINALMENTE! Imagem ao vivo sem travar! Muito bom!
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Application_Idle(object sender, EventArgs e)
{
//Try to update interface
while (Enabled && IsAppStillIdle())
{
OnApplicationIdleDoWork(EventArgs.Empty);
//Give a break to the processor... :)
//8 ms -> 125 Hz
//10 ms -> 100 Hz
Thread.Sleep(SleepTime);
}
}
private void OnApplicationIdleDoWork(EventArgs e)
{
var handler = _applicationLoopDoWork;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Gets if the app still idle.
/// </summary>
/// <returns></returns>
private static bool IsAppStillIdle()
{
bool stillIdle = false;
try
{
Message msg;
stillIdle = !PeekMessage(out msg, IntPtr.Zero, 0, 0, 0);
}
catch (Exception e)
{
//Should never get here... I hope...
MessageBox.Show("IsAppStillIdle() Exception. Message: " + e.Message);
}
return stillIdle;
}
#region Unmanaged Get PeekMessage
// http://blogs.msdn.com/b/tmiller/archive/2005/05/05/415008.aspx
[System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern bool PeekMessage(out Message msg, IntPtr hWnd, uint messageFilterMin, uint messageFilterMax, uint flags);
#endregion
}
}