mirror of
https://github.com/Ryujinx/Opentk.git
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350 lines
13 KiB
C#
350 lines
13 KiB
C#
#region License
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//
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// CocoaContext.cs
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//
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// Author:
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// Olle Håkansson <ollhak@gmail.com>
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//
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// Copyright (c) 2014 Olle Håkansson
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#endregion
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using System;
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using OpenTK.Platform;
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using OpenTK.Graphics;
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using OpenTK.Platform.MacOS;
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using System.Diagnostics;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace OpenTK
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{
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class CocoaContext : DesktopGraphicsContext
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{
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private CocoaWindowInfo cocoaWindow;
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private IntPtr shareContextRef;
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static readonly IntPtr NSOpenGLContext = Class.Get("NSOpenGLContext");
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static readonly IntPtr selCurrentContext = Selector.Get("currentContext");
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static readonly IntPtr selFlushBuffer = Selector.Get("flushBuffer");
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static readonly IntPtr selMakeCurrentContext = Selector.Get("makeCurrentContext");
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static readonly IntPtr selUpdate = Selector.Get("update");
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static readonly IntPtr opengl = NS.AddImage(
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"/System/Library/Frameworks/OpenGL.framework/OpenGL",
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AddImageFlags.ReturnOnError);
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static readonly IntPtr opengles = NS.AddImage(
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"/System/Library/Frameworks/OpenGL.framework/OpenGLES",
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AddImageFlags.ReturnOnError);
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static CocoaContext()
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{
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Cocoa.Initialize();
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}
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public CocoaContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, int majorVersion, int minorVersion)
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{
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Debug.Print("Context Type: {0}", shareContext);
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Debug.Print("Window info: {0}", window);
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cocoaWindow = (CocoaWindowInfo)window;
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if (shareContext is CocoaContext)
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shareContextRef = ((CocoaContext)shareContext).Handle.Handle;
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if (shareContext is GraphicsContext)
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{
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ContextHandle shareHandle = shareContext != null ? (shareContext as IGraphicsContextInternal).Context : (ContextHandle)IntPtr.Zero;
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shareContextRef = shareHandle.Handle;
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}
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if (shareContextRef == IntPtr.Zero)
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{
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Debug.Print("No context sharing will take place.");
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}
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CreateContext(mode, cocoaWindow, shareContextRef, majorVersion, minorVersion, true);
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}
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public CocoaContext(ContextHandle handle, IWindowInfo window, IGraphicsContext shareContext, int majorVersion, int minorVersion)
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{
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if (handle == ContextHandle.Zero)
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throw new ArgumentException("handle");
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if (window == null)
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throw new ArgumentNullException("window");
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Handle = handle;
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cocoaWindow = (CocoaWindowInfo)window;
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}
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private void AddPixelAttrib(List<NSOpenGLPixelFormatAttribute> attributes, NSOpenGLPixelFormatAttribute attribute)
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{
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Debug.Print(attribute.ToString());
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attributes.Add(attribute);
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}
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private void AddPixelAttrib(List<NSOpenGLPixelFormatAttribute> attributes, NSOpenGLPixelFormatAttribute attribute, int value)
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{
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Debug.Print("{0} : {1}", attribute, value);
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attributes.Add(attribute);
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attributes.Add((NSOpenGLPixelFormatAttribute)value);
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}
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private void CreateContext(GraphicsMode mode, CocoaWindowInfo cocoaWindow, IntPtr shareContextRef, int majorVersion, int minorVersion, bool fullscreen)
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{
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// Prepare attributes
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List<NSOpenGLPixelFormatAttribute> attributes = new List<NSOpenGLPixelFormatAttribute>();
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var profile = NSOpenGLProfile.VersionLegacy;
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if (majorVersion > 3 || (majorVersion == 3 && minorVersion >= 2))
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{
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profile = NSOpenGLProfile.Version3_2Core;
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Debug.Print("Running the OpenGL core profile.");
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}
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else
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{
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Debug.Print("Running the legacy OpenGL profile. Start with version major=3, minor=2 or later for the 3.2 profile.");
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}
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Debug.Print("NSGL pixel format attributes:");
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Debug.Indent();
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.OpenGLProfile, (int)profile);
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.DoubleBuffer);
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.Accelerated);
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.ColorSize, mode.ColorFormat.BitsPerPixel);
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if (mode.Depth > 0)
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.DepthSize, mode.Depth);
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if (mode.Stencil > 0)
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.StencilSize, mode.Stencil);
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if (mode.AccumulatorFormat.BitsPerPixel > 0)
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{
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.AccumSize, mode.AccumulatorFormat.BitsPerPixel);
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}
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if (mode.Samples > 1)
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{
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.SampleBuffers, 1);
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AddPixelAttrib(attributes, NSOpenGLPixelFormatAttribute.Samples, mode.Samples);
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}
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AddPixelAttrib(attributes, (NSOpenGLPixelFormatAttribute)0);
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Debug.Unindent();
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Debug.Write("Attribute array: ");
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for (int i = 0; i < attributes.Count; i++)
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Debug.Write(attributes[i].ToString() + " ");
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Debug.WriteLine("");
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// Create pixel format
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var pixelFormat = Cocoa.SendIntPtr(Class.Get("NSOpenGLPixelFormat"), Selector.Alloc);
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unsafe
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{
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fixed (NSOpenGLPixelFormatAttribute* ptr = attributes.ToArray())
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{
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pixelFormat = Cocoa.SendIntPtr(pixelFormat, Selector.Get("initWithAttributes:"), (IntPtr)ptr);
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}
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}
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// Create context
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var context = Cocoa.SendIntPtr(NSOpenGLContext, Selector.Alloc);
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context = Cocoa.SendIntPtr(context, Selector.Get("initWithFormat:shareContext:"), pixelFormat, shareContextRef);
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// Release pixel format
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Cocoa.SendVoid(pixelFormat, Selector.Release);
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pixelFormat = IntPtr.Zero;
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// Attach the view
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Cocoa.SendVoid(context, Selector.Get("setView:"), cocoaWindow.ViewHandle);
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Cocoa.SendVoid(cocoaWindow.ViewHandle, Selector.Get("setWantsBestResolutionOpenGLSurface:"), true);
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// Finalize
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Handle = new ContextHandle(context);
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Mode = GetGraphicsMode(context);
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Update(cocoaWindow);
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MakeCurrent(cocoaWindow);
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}
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private GraphicsMode GetGraphicsMode(IntPtr context)
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{
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IntPtr cgl_context = Cocoa.SendIntPtr(context, Selector.Get("CGLContextObj"));
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IntPtr cgl_format = Cgl.GetPixelFormat(cgl_context);
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int id = 0; // CGL does not support the concept of a pixel format id
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int color, depth, stencil, samples, accum;
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bool doublebuffer, stereo;
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.ColorSize, out color);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.DepthSize, out depth);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.StencilSize, out stencil);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.Samples, out samples);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.AccumSize, out accum);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatBool.Doublebuffer, out doublebuffer);
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Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatBool.Stereo, out stereo);
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return new GraphicsMode((IntPtr)id, color, depth, stencil, samples, accum, doublebuffer ? 2 : 1, stereo);
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}
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public override void SwapBuffers()
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{
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Cocoa.SendVoid(Handle.Handle, selFlushBuffer);
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}
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public override void MakeCurrent(IWindowInfo window)
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{
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Cocoa.SendVoid(Handle.Handle, selMakeCurrentContext);
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}
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public override bool IsCurrent
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{
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get
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{
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return Handle.Handle == CurrentContext;
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}
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}
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public static IntPtr CurrentContext
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{
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get
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{
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return Cocoa.SendIntPtr(NSOpenGLContext, selCurrentContext);
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}
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}
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private unsafe void SetContextValue (int val, NSOpenGLContextParameter par)
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{
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int* p = &val;
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Cocoa.SendVoid(Handle.Handle, Selector.Get("setValues:forParameter:"), (IntPtr)p, (int)par);
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}
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private unsafe int GetContextValue (NSOpenGLContextParameter par)
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{
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int ret;
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int* p = &ret;
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Cocoa.SendVoid(Handle.Handle, Selector.Get("getValues:forParameter:"), (IntPtr)p, (int)par);
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return ret;
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}
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public override int SwapInterval
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{
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get
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{
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return GetContextValue(NSOpenGLContextParameter.SwapInterval);
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}
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set
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{
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SetContextValue(value, NSOpenGLContextParameter.SwapInterval);
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}
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}
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public override void Update(IWindowInfo window)
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{
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Cocoa.SendVoid(Handle.Handle, selUpdate);
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}
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#region IDisposable Members
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~CocoaContext()
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{
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Dispose(false);
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}
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public override void Dispose()
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{
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Dispose(true);
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}
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void Dispose(bool disposing)
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{
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if (IsDisposed || Handle.Handle == IntPtr.Zero)
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return;
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Debug.Print("Disposing of Cocoa context.");
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Cocoa.SendVoid(NSOpenGLContext, Selector.Get("clearCurrentContext"));
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Cocoa.SendVoid(Handle.Handle, Selector.Get("clearDrawable"));
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Cocoa.SendVoid(Handle.Handle, Selector.Get("release"));
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Handle = ContextHandle.Zero;
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IsDisposed = true;
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}
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#endregion
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#region IGraphicsContextInternal Members
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public override IntPtr GetAddress(IntPtr function)
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{
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unsafe
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{
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// Add a leading underscore to the function name
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// As of OpenGL 4.4, all functions are < 64 bytes
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// in length. Double that just to be sure.
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const int max = 128;
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byte* fun = stackalloc byte[max];
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byte* ptr = fun;
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byte* cur = (byte*)function.ToPointer();
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int i = 0;
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*ptr++ = (byte)'_';
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while (*cur != 0 && ++i < max)
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{
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*ptr++ = *cur++;
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}
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if (i >= max - 1)
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{
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Debug.Print("Function {0} too long. Loading will fail.",
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Marshal.PtrToStringAnsi(function));
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}
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IntPtr address = IntPtr.Zero;
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IntPtr symbol = IntPtr.Zero;
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if (opengl != IntPtr.Zero)
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{
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symbol = NS.LookupSymbolInImage(opengl, new IntPtr(fun),
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SymbolLookupFlags.Bind | SymbolLookupFlags.ReturnOnError);
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}
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if (symbol == IntPtr.Zero && opengles != IntPtr.Zero)
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{
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symbol = NS.LookupSymbolInImage(opengles, new IntPtr(fun),
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SymbolLookupFlags.Bind | SymbolLookupFlags.ReturnOnError);
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}
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if (symbol != IntPtr.Zero)
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{
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address = NS.AddressOfSymbol(symbol);
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}
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return address;
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}
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}
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#endregion
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}
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}
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