mirror of
https://github.com/Ryujinx/Opentk.git
synced 2025-01-14 17:55:40 +00:00
9abcb5d92e
Updated to use GraphicsFormat instead of DisplayMode. Updated to use ColorDepth instead of ColorMode. Improved GameWindow Exit handling, and handling of failed context creation. Improved WinGLContext creation code, to allow for FSAA support in the future. Fixed several shutdown bugs in WinGLContext and GraphicsContext. Context creation no longer relies on IGLContextCreationHack. X11GLContext is not working at the moment.
568 lines
20 KiB
C#
568 lines
20 KiB
C#
#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* Contributions from Erik Ylvisaker
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* See license.txt for license info
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*/
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#endregion
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#region --- Using Directives ---
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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using OpenTK.Graphics.OpenGL;
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using OpenTK.Graphics;
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#endregion
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namespace OpenTK.Platform.Windows
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{
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/// <summary>
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/// Provides methods to create and control an opengl context on the Windows platform.
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/// This class supports OpenTK, and is not intended for use by OpenTK programs.
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/// </summary>
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internal sealed class WinGLContext : IGraphicsContext, IGLContextInternal, IGLContextCreationHack
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{
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IntPtr deviceContext;
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ContextHandle renderContext;
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static IntPtr opengl32Handle;
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const string opengl32Name = "OPENGL32.DLL";
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WinWindowInfo windowInfo = new WinWindowInfo();
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GraphicsFormat format;
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//DisplayMode mode = null;
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bool vsync_supported;
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bool disposed;
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#region --- Contructors ---
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static WinGLContext()
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{
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// Set the GetCurrentContext implementation.
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// TODO: Does this belong here?
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if (GraphicsContext.GetCurrentContext == null)
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GraphicsContext.GetCurrentContext = WinGLContext.GetCurrentContext;
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// Dynamically load the OpenGL32.dll in order to use the extension loading capabilities of Wgl.
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if (opengl32Handle == IntPtr.Zero)
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{
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opengl32Handle = Functions.LoadLibrary(opengl32Name);
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if (opengl32Handle == IntPtr.Zero)
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throw new ApplicationException(String.Format("LoadLibrary(\"{0}\") call failed with code {1}",
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opengl32Name, Marshal.GetLastWin32Error()));
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Debug.WriteLine(String.Format("Loaded opengl32.dll: {0}", opengl32Handle));
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}
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}
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GraphicsFormat SelectFormat(GraphicsFormat format)
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{
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using (WinGLNative native = new WinGLNative(16, 16))
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//using (WinGLContext context = new WinGLContext(format, native.WindowInfo, null))
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{
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// Find the best multisampling mode.
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return format;
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}
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}
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public WinGLContext(GraphicsFormat format, IWindowInfo window, IGraphicsContext sharedContext)
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{
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//format = this.SelectFormat(format);
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this.windowInfo = (WinWindowInfo)window;
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Debug.Print("OpenGL will be bound to handle: {0}", this.windowInfo.Handle);
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if (this.windowInfo.Handle == IntPtr.Zero)
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throw new ArgumentException("window", "Must be a valid window.");
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Debug.Print("Setting pixel format...");
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this.format = this.SetGraphicsFormatPFD(format);
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Debug.Write("Creating render context... ");
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// Do not rely on OpenTK.Platform.Windows.Wgl - the context is not ready yet,
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// and Wgl extensions will fail to load.
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renderContext = new ContextHandle(Wgl.Imports.CreateContext(deviceContext));
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if (renderContext == IntPtr.Zero)
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throw new GraphicsContextException(String.Format("Context creation failed. Wgl.CreateContext() error: {0}.",
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Marshal.GetLastWin32Error()));
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Debug.WriteLine(String.Format("done! (id: {0})", renderContext));
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Wgl.Imports.MakeCurrent(deviceContext, renderContext);
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Wgl.LoadAll();
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GL.LoadAll();
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Glu.LoadAll();
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vsync_supported = Wgl.Arb.SupportsExtension(this, "WGL_EXT_swap_control") &&
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Wgl.Load("wglGetSwapIntervalEXT") && Wgl.Load("wglSwapIntervalEXT");
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if (sharedContext != null)
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{
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Debug.Print("Sharing state with context {0}", sharedContext.ToString());
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Wgl.Imports.ShareLists(renderContext, (sharedContext as IGLContextInternal).Context);
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}
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}
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#endregion
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#region --- IGraphicsContext Members ---
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#region public void CreateContext()
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public void CreateContext()
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{
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throw new NotSupportedException();
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this.CreateContext(true, null);
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}
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#endregion
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#region public void CreateContext(bool direct)
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public void CreateContext(bool direct)
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{
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throw new NotSupportedException();
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this.CreateContext(direct, null);
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}
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#endregion
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#region public void CreateContext(bool direct, IGraphicsContext source)
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public void CreateContext(bool direct, IGraphicsContext source)
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{
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throw new NotSupportedException();
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}
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#endregion
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#region public void SwapBuffers()
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public void SwapBuffers()
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{
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Functions.SwapBuffers(deviceContext);
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}
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#endregion
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#region public void MakeCurrent()
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public void MakeCurrent()
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{
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if (!Wgl.Imports.MakeCurrent(deviceContext, renderContext))
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{
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Debug.Print("WinGLContext.MakeCurrent() call failed. Error: {0}", Marshal.GetLastWin32Error());
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}
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}
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#endregion
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#region public bool IsCurrent
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public bool IsCurrent
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{
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get { return Wgl.GetCurrentContext() == this.renderContext; }
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set
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{
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if (value)
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Wgl.MakeCurrent(this.deviceContext, this.renderContext);
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else
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Wgl.MakeCurrent(IntPtr.Zero, IntPtr.Zero);
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}
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}
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#endregion
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#region public bool VSync
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/// <summary>
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/// Gets or sets a System.Boolean indicating whether SwapBuffer calls are synced to the screen refresh rate.
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/// </summary>
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public bool VSync
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{
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get
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{
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return vsync_supported && Wgl.Ext.GetSwapInterval() != 0;
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}
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set
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{
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if (vsync_supported)
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Wgl.Ext.SwapInterval(value ? 1 : 0);
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}
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}
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#endregion
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public event DestroyEvent<IGraphicsContext> Destroy;
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#endregion
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#region --- IGLContextInternal Members ---
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#region ContextHandle IGLContextInternal.Context
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ContextHandle IGLContextInternal.Context
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{
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get { return renderContext; }
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}
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#endregion
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#region IWindowInfo IGLContextInternal.Info
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IWindowInfo IGLContextInternal.Info
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{
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get { return (IWindowInfo)windowInfo; }
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}
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#endregion
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#region GraphicsFormat IGLContextInternal.GraphicsFormat
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GraphicsFormat IGLContextInternal.GraphicsFormat
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{
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get { return format; }
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}
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#endregion
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#region public IntPtr GetAddress(string function_string)
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public IntPtr GetAddress(string function_string)
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{
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return Wgl.Imports.GetProcAddress(function_string);
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}
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#endregion
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#region public DisplayMode[] GetDisplayModes()
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public IEnumerable<DisplayMode> GetDisplayModes()
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{
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throw new NotSupportedException("See OpenTK.Graphics.DisplayDevice.AvailableModes instead.");
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}
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#endregion
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#region void IGLContextInternal.RegisterForDisposal(IDisposable resource)
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void IGLContextInternal.RegisterForDisposal(IDisposable resource)
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{
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throw new NotSupportedException("Use OpenTK.GraphicsContext instead.");
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}
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#endregion
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#region void IGLContextInternal.DisposeResources()
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void IGLContextInternal.DisposeResources()
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{
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throw new NotSupportedException("Use OpenTK.GraphicsContext instead.");
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}
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#endregion
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#endregion
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#region --- Private Methods ---
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#region GraphicsFormat SetGraphicsFormatPFD(GraphicsFormat format)
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GraphicsFormat SetGraphicsFormatPFD(GraphicsFormat format)
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{
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deviceContext = Functions.GetDC(this.windowInfo.Handle);
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Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
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Debug.Write("Setting pixel format... ");
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PixelFormatDescriptor pixelFormat = new PixelFormatDescriptor();
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pixelFormat.Size = API.PixelFormatDescriptorSize;
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pixelFormat.Version = API.PixelFormatDescriptorVersion;
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pixelFormat.Flags =
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PixelFormatDescriptorFlags.SUPPORT_OPENGL |
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PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
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pixelFormat.ColorBits = (byte)(format.ColorFormat.Red + format.ColorFormat.Green + format.ColorFormat.Blue);
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pixelFormat.PixelType = format.ColorFormat.IsIndexed ? PixelType.INDEXED : PixelType.RGBA;
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pixelFormat.PixelType = PixelType.RGBA;
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pixelFormat.RedBits = (byte)format.ColorFormat.Red;
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pixelFormat.GreenBits = (byte)format.ColorFormat.Green;
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pixelFormat.BlueBits = (byte)format.ColorFormat.Blue;
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pixelFormat.AlphaBits = (byte)format.ColorFormat.Alpha;
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if (format.AccumulatorFormat != null)
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{
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pixelFormat.AccumBits = (byte)(format.AccumulatorFormat.Red + format.AccumulatorFormat.Green + format.AccumulatorFormat.Blue);
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pixelFormat.AccumRedBits = (byte)format.AccumulatorFormat.Red;
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pixelFormat.AccumGreenBits = (byte)format.AccumulatorFormat.Green;
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pixelFormat.AccumBlueBits = (byte)format.AccumulatorFormat.Blue;
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pixelFormat.AccumAlphaBits = (byte)format.AccumulatorFormat.Alpha;
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}
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pixelFormat.DepthBits = (byte)format.Depth;
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pixelFormat.StencilBits = (byte)format.Stencil;
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if (format.Depth <= 0) pixelFormat.Flags |= PixelFormatDescriptorFlags.DEPTH_DONTCARE;
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if (format.Stereo) pixelFormat.Flags |= PixelFormatDescriptorFlags.STEREO;
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if (format.Buffers > 1) pixelFormat.Flags |= PixelFormatDescriptorFlags.DOUBLEBUFFER;
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int pixel = Functions.ChoosePixelFormat(deviceContext, ref pixelFormat);
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if (pixel == 0)
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throw new GraphicsModeException(String.Format("The requested format is not available: {0}.", format));
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// Find out what we really got as a format:
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PixelFormatDescriptor pfd = new PixelFormatDescriptor();
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pixelFormat.Size = API.PixelFormatDescriptorSize;
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pixelFormat.Version = API.PixelFormatDescriptorVersion;
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Functions.DescribePixelFormat(deviceContext, pixel, API.PixelFormatDescriptorSize, ref pfd);
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GraphicsFormat fmt = new GraphicsFormat(
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new ColorDepth(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
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pfd.DepthBits,
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pfd.StencilBits,
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0,
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new ColorDepth(pfd.AccumBits),
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(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
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(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
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if (!Functions.SetPixelFormat(deviceContext, pixel, ref pixelFormat))
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throw new GraphicsContextException(String.Format("Requested GraphicsFormat not available. SetPixelFormat error: {0}",
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Marshal.GetLastWin32Error()));
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Debug.Print("done! (format: {0})", pixel);
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return fmt;
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}
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#endregion
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#region GraphicsFormat SetGraphicsFormatARB(GraphicsFormat format)
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GraphicsFormat SetGraphicsFormatARB(GraphicsFormat format)
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{
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return null;
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}
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#endregion
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#endregion
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#region --- IGLContextCreationHack Members ---
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#region bool IGLContextCreationHack.SelectDisplayMode(DisplayMode mode, IWindowInfo info)
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/// <summary>
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/// HACK! This function will be removed in 0.3.15
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/// Checks if the specified OpenTK.Platform.DisplayMode is available, and selects it if it is.
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/// </summary>
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/// <param name="mode">The OpenTK.Platform.DisplayMode to select.</param>
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/// <param name="info">The OpenTK.Platform.IWindowInfo that describes the display to use. Note: a window handle is not necessary for this function!</param>
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/// <returns>True if the DisplayMode is available, false otherwise.</returns>
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bool IGLContextCreationHack.SelectDisplayMode(DisplayMode mode, IWindowInfo info)
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{
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// Dynamically load the OpenGL32.dll in order to use the extension loading capabilities of Wgl.
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if (opengl32Handle == IntPtr.Zero)
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{
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opengl32Handle = Functions.LoadLibrary(opengl32Name);
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if (opengl32Handle == IntPtr.Zero)
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{
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//System.Diagnostics.Debug.WriteLine("LoadLibrary({0}) set error code: {1}. Will not load extensions.", _dll_name, error_code);
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throw new ApplicationException(String.Format("LoadLibrary(\"{0}\") call failed with code {1}",
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opengl32Name, Marshal.GetLastWin32Error()));
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}
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Debug.WriteLine(String.Format("Loaded opengl32.dll: {0}", opengl32Handle));
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}
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deviceContext = Functions.GetDC(this.windowInfo.Handle);
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Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
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Debug.Write("Setting pixel format... ");
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PixelFormatDescriptor pixelFormat = new PixelFormatDescriptor();
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pixelFormat.Size = API.PixelFormatDescriptorSize;
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pixelFormat.Version = API.PixelFormatDescriptorVersion;
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pixelFormat.Flags =
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PixelFormatDescriptorFlags.SUPPORT_OPENGL |
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PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
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pixelFormat.ColorBits = (byte)(mode.Color.Red + mode.Color.Green + mode.Color.Blue);
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if (mode.Color.IsIndexed)
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{
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pixelFormat.PixelType = PixelType.INDEXED;
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}
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else
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{
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pixelFormat.PixelType = PixelType.RGBA;
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pixelFormat.RedBits = (byte)mode.Color.Red;
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pixelFormat.GreenBits = (byte)mode.Color.Green;
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pixelFormat.BlueBits = (byte)mode.Color.Blue;
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pixelFormat.AlphaBits = (byte)mode.Color.Alpha;
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}
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/*
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if (accum != null)
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{
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pixelFormat.AccumBits = (byte)(accum.Red + accum.Green + accum.Blue);
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pixelFormat.AccumRedBits = (byte)accum.Red;
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pixelFormat.AccumGreenBits = (byte)accum.Green;
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pixelFormat.AccumBlueBits = (byte)accum.Blue;
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pixelFormat.AccumAlphaBits = (byte)accum.Alpha;
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}
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*/
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pixelFormat.DepthBits = (byte)mode.DepthBits;
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pixelFormat.StencilBits = (byte)mode.StencilBits;
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if (mode.DepthBits <= 0)
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{
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pixelFormat.Flags |= PixelFormatDescriptorFlags.DEPTH_DONTCARE;
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}
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if (mode.Stereo)
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{
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pixelFormat.Flags |= PixelFormatDescriptorFlags.STEREO;
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}
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if (mode.Buffers > 1)
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{
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pixelFormat.Flags |= PixelFormatDescriptorFlags.DOUBLEBUFFER;
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}
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// TODO: More elaborate mode setting, using DescribePixelFormat.
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/*
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unsafe
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{
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int pixel = Wgl.Imports.ChoosePixelFormat(deviceContext, &pixelFormat);
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if (pixel == 0)
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{
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throw new ApplicationException("The requested pixel format is not supported by the hardware configuration.");
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}
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Wgl.Imports.SetPixelFormat(deviceContext, pixel, &pixelFormat);
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Debug.WriteLine(String.Format("done! (format: {0})", pixel));
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}
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*/
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int pixel = Functions.ChoosePixelFormat(deviceContext, ref pixelFormat);
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if (pixel == 0)
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{
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Debug.Print("format not available...");
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return false;
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}
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Functions.SetPixelFormat(deviceContext, pixel, ref pixelFormat);
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Debug.Print("done! (format: {0})", pixel);
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return true;
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}
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#endregion
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void IGLContextCreationHack.SetWindowHandle(IntPtr handle)
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{
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this.windowInfo.Handle = handle;
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}
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#endregion
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#region --- Internal Methods ---
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#region internal IntPtr Device
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internal IntPtr Device { get { return deviceContext; } }
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#endregion
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#region static ContextHandle GetCurrentContext()
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static ContextHandle GetCurrentContext()
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{
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return Wgl.GetCurrentContext();
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}
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#endregion
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#endregion
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#region --- Overrides ---
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/// <summary>Returns a System.String describing this OpenGL context.</summary>
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/// <returns>A System.String describing this OpenGL context.</returns>
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public override string ToString()
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{
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return (this as IGLContextInternal).Context.ToString();
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}
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#endregion
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#region --- IDisposable Members ---
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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private void Dispose(bool calledManually)
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{
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if (!disposed)
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{
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DestroyContext();
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if (calledManually)
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{
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// Safe to clean managed resources
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}
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disposed = true;
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}
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}
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~WinGLContext()
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{
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Dispose(false);
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}
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#region private void DestroyContext()
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private void DestroyContext()
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{
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if (Destroy != null)
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Destroy(this, EventArgs.Empty);
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if (renderContext != IntPtr.Zero)
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{
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Wgl.Imports.MakeCurrent(IntPtr.Zero, IntPtr.Zero);
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if (!Wgl.Imports.DeleteContext(renderContext))
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{
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//throw new ApplicationException("Could not destroy the OpenGL render context. Error: " + Marshal.GetLastWin32Error());
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//Debug.Print("Could not destroy the OpenGL render context. Error: {0}", Marshal.GetLastWin32Error());
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}
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renderContext = null;
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}
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if (deviceContext != IntPtr.Zero)
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{
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if (!Functions.ReleaseDC(this.windowInfo.Handle, deviceContext))
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{
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//throw new ApplicationException("Could not release device context. Error: " + Marshal.GetLastWin32Error());
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//Debug.Print("Could not destroy the device context. Error: {0}", Marshal.GetLastWin32Error());
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}
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}
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/*
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if (opengl32Handle != IntPtr.Zero)
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{
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if (!Functions.FreeLibrary(opengl32Handle))
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{
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//throw new ApplicationException("FreeLibray call failed ('opengl32.dll'), Error: " + Marshal.GetLastWin32Error());
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|
//Debug.Print("Could not release {0}. Error: {1}", opengl32Name, Marshal.GetLastWin32Error());
|
|
}
|
|
opengl32Handle = IntPtr.Zero;
|
|
}
|
|
*/
|
|
}
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|
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|
#endregion
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|
|
|
#endregion
|
|
}
|
|
}
|