mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-26 06:25:29 +00:00
5c6a261030
Updated GameWindow and its implementations to use GraphicsFormat instead of the obsolete DisplayMode. Updated license. Updated some docs. Fixed CLSCopmliant warnings in XRamExtension.cs
443 lines
14 KiB
C#
443 lines
14 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.OpenGL;
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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 : IGLContext, IGLContextInternal, IGLContextCreationHack
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{
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private IntPtr deviceContext;
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private ContextHandle renderContext;
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static private IntPtr opengl32Handle;
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private const string opengl32Name = "OPENGL32.DLL";
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private WindowInfo windowInfo = new WindowInfo();
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private DisplayMode mode = null;
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private bool vsync_supported;
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private 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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if (GLContext.GetCurrentContext == null)
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GLContext.GetCurrentContext = WinGLContext.GetCurrentContext;
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}
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public WinGLContext()
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{
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}
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#endregion
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#region --- IGLContext Members ---
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#region public void CreateContext()
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public void CreateContext()
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{
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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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this.CreateContext(direct, null);
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}
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#endregion
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#region public void CreateContext(bool direct, IGLContext source)
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public void CreateContext(bool direct, IGLContext source)
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{
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Debug.WriteLine(String.Format("OpenGL context is bound to handle: {0}", this.windowInfo.Handle));
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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 ApplicationException("Could not create OpenGL render context (Wgl.CreateContext() return 0).");
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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 (source != null)
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{
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Debug.Print("Sharing state with context {0}", (source as IGLContextInternal).Context);
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Wgl.Imports.ShareLists(renderContext, (source as IGLContextInternal).Context);
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}
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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<IGLContext> Destroy;
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#endregion
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#region --- IGLContextInternal Members ---
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#region public IntPtr 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 public IWindowInfo Info
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IWindowInfo IGLContextInternal.Info
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{
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get { return windowInfo; }
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}
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#endregion
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#region public DisplayMode Mode
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[Obsolete]
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DisplayMode IGLContextInternal.Mode
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{
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get { return new DisplayMode(mode); }
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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.GLContext 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.GLContext instead.");
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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 --- 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 --- 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());
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}
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opengl32Handle = IntPtr.Zero;
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}
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*/
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}
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#endregion
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#endregion
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}
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}
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