mirror of
https://github.com/Ryujinx/Opentk.git
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334 lines
11 KiB
C#
334 lines
11 KiB
C#
#region --- License ---
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/* Copyright (c) 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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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.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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namespace OpenTK.Platform.X11
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{
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/// <summary>
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/// Provides methods to create and control an opengl context on the X11 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 X11GLContext : IGLContext, IGLContextCreationHack
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{
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private IntPtr context;
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private DisplayMode mode;
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private WindowInfo windowInfo = new WindowInfo();
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private IntPtr visual;
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private bool disposed;
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#region --- Constructors ---
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/// <summary>
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/// Constructs a new X11GLContext object.
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/// </summary>
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public X11GLContext() { }
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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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List<int> visualAttributes = new List<int>();
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// TODO: Improve modesetting code.
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if (mode == null || mode.Color.BitsPerPixel == 0)
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{
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// Define the bare essentials - needed for compatibility with Mono's System.Windows.Forms
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Debug.Print("Preparing visual for System.Windows.Forms (compatibility mode)");
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.RGBA);
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/*visualAttributes.Add((int)Glx.Enums.GLXAttribute.RED_SIZE);
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visualAttributes.Add((int)1);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.GREEN_SIZE);
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visualAttributes.Add((int)1);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.BLUE_SIZE);
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visualAttributes.Add((int)1);*/
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.DEPTH_SIZE);
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visualAttributes.Add((int)1);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.DOUBLEBUFFER);
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visualAttributes.Add((int)0);
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}
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else
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{
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Debug.Print("Preparing visual for DisplayMode: {0}", mode.ToString());
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.RGBA);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.RED_SIZE);
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visualAttributes.Add((int)mode.Color.Red);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.GREEN_SIZE);
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visualAttributes.Add((int)mode.Color.Green);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.BLUE_SIZE);
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visualAttributes.Add((int)mode.Color.Blue);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.ALPHA_SIZE);
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visualAttributes.Add((int)mode.Color.Alpha);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.DEPTH_SIZE);
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visualAttributes.Add((int)mode.DepthBits);
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visualAttributes.Add((int)Glx.Enums.GLXAttribute.DOUBLEBUFFER);
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visualAttributes.Add((int)0);
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}
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windowInfo.CopyInfoFrom(info);
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visual = Glx.ChooseVisual(windowInfo.Display, windowInfo.Screen, visualAttributes.ToArray());
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if (visual == IntPtr.Zero)
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return false;
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else
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{
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windowInfo.VisualInfo = (XVisualInfo)Marshal.PtrToStructure(visual,
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typeof(XVisualInfo));
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Debug.Print("Chose visual {0}", windowInfo.VisualInfo.ToString());
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}
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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 --- IGLContext Members ---
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#region public IntPtr Context
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public IntPtr Context
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{
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get { return context; }
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private set { context = value; }
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}
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#endregion
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#region public DisplayMode Mode
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public DisplayMode Mode
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{
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get { return mode; }
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private set
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{
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if (context == IntPtr.Zero)
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mode = value;
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else
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Debug.Print("Cannot change DisplayMode of an existing context.");
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}
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}
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#endregion
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#region public IWindowInfo Info
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public IWindowInfo Info { get { return windowInfo; } }
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#endregion
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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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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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#region public void CreateContext(bool direct, IGLContext shareContext)
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public void CreateContext(bool direct, IGLContext shareContext)
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{
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try
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{
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Debug.WriteLine("Creating opengl context.");
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Debug.Indent();
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IntPtr shareHandle = shareContext != null ? (shareContext as X11GLContext).Context: IntPtr.Zero;
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Debug.Write(direct ? "Context is direct, " : "Context is indirect, ");
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Debug.WriteLine(shareHandle == IntPtr.Zero ? "not shared." :
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String.Format("shared with ({0}).", shareHandle));
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// Try to call Glx.CreateContext with the specified parameters.
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context = Glx.CreateContext(windowInfo.Display, visual, shareHandle, direct);
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// Context creation succeeded, return.
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if (context != IntPtr.Zero)
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{
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Debug.Print("New opengl context created. (id: {0})", context);
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this.MakeCurrent();
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GL.LoadAll();
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Glu.LoadAll();
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return;
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}
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// Context creation failed. Retry with a non-shared context with the
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// direct/indirect rendering mode flipped.
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Debug.Print("Cotnext creation failed, retrying with a non-shared, {0} context.",
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!direct ? "direct" : "indirect");
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context = Glx.CreateContext(windowInfo.Display, visual, IntPtr.Zero, !direct);
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if (context != IntPtr.Zero)
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{
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Debug.Print("New opengl context created. (id: {0})", context);
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this.MakeCurrent();
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GL.LoadAll();
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Glu.LoadAll();
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return;
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}
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throw new ApplicationException("Glx.CreateContext call failed (returned 0).");
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}
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finally
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{
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Debug.Unindent();
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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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Glx.SwapBuffers(windowInfo.Display, windowInfo.Handle);
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}
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#endregion
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#region public void MakeCurrent()
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bool result;
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public void MakeCurrent()
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{
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Debug.Write(String.Format("Making context {0} current on thread {1} (Display: {2}, Screen: {3}, Window: {4})... ",
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context, System.Threading.Thread.CurrentThread.ManagedThreadId, windowInfo.Display, windowInfo.Screen, windowInfo.Handle));
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if (windowInfo.Display != IntPtr.Zero && windowInfo.Handle != IntPtr.Zero && context != IntPtr.Zero)
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{
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result = Glx.MakeCurrent(windowInfo.Display, windowInfo.Handle, context);
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if (!result)
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{
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Debug.WriteLine("failed.");
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// probably need to recreate context here.
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//throw new ApplicationException(String.Format("Failed to make context {0} current on thread {1}.",
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// context, System.Threading.Thread.CurrentThread.ManagedThreadId));
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}
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else
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{
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Debug.WriteLine("done!");
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}
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}
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}
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#endregion
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public bool IsCurrent
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{
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//return GetCurrentContext() == context;
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get { throw new NotImplementedException(); }
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}
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public IntPtr GetCurrentContext()
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{
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//return Glx.GetCurrentContext();
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throw new NotImplementedException();
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}
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public event DestroyEvent<IGLContext> Destroy;
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#region public IntPtr GetAddress(string function)
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public IntPtr GetAddress(string function)
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{
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return Glx.GetProcAddress(function);
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}
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#endregion
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public void RegisterForDisposal(IDisposable resource)
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{
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throw new NotImplementedException("Use the general GLContext class instead.");
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}
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public void DisposeResources()
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{
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throw new NotImplementedException("Use the general GLContext class instead.");
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}
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public IEnumerable<DisplayMode> GetDisplayModes()
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{
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throw new Exception("The method or operation is not implemented.");
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}
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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 false;
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}
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set
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{
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}
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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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this.Dispose(true);
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GC.SuppressFinalize(this);
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}
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private void Dispose(bool manuallyCalled)
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{
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if (!disposed)
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{
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// Clean unmanaged resources:
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Glx.MakeCurrent(windowInfo.Display, IntPtr.Zero, IntPtr.Zero);
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Glx.DestroyContext(windowInfo.Display, context);
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API.Free(visual);
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if (manuallyCalled)
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{
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// Safe to clean managed resources, too
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}
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}
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disposed = true;
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}
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~X11GLContext()
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{
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this.Dispose(false);
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}
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#endregion
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}
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}
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