107 lines
2.2 KiB
C#
107 lines
2.2 KiB
C#
using CPF.Mac.Foundation;
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using CPF.Mac.ObjCRuntime;
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using System;
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using System.Runtime.InteropServices;
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namespace CPF.Mac.OpenGL
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{
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public class CGLContext : INativeObject, IDisposable
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{
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internal IntPtr handle;
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public IntPtr Handle => handle;
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public static CGLContext CurrentContext
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{
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get
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{
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IntPtr value = CGLGetCurrentContext();
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if (value != IntPtr.Zero)
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{
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return new CGLContext(value);
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}
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return null;
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}
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set
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{
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if (CGLSetCurrentContext(value.Handle) != 0)
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{
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throw new Exception("Error setting the Current Context");
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}
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}
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}
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public CGLContext(IntPtr handle)
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{
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if (handle == IntPtr.Zero)
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{
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throw new Exception("Invalid parameters to context creation");
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}
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CGLRetainContext(handle);
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this.handle = handle;
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}
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internal CGLContext()
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{
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}
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[Preserve(Conditional = true)]
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internal CGLContext(IntPtr handle, bool owns)
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{
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if (!owns)
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{
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CGLRetainContext(handle);
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}
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this.handle = handle;
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}
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~CGLContext()
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{
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Dispose(disposing: false);
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}
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public void Dispose()
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{
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Dispose(disposing: true);
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GC.SuppressFinalize(this);
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}
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern void CGLRetainContext(IntPtr handle);
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern void CGLReleaseContext(IntPtr handle);
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protected virtual void Dispose(bool disposing)
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{
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if (handle != IntPtr.Zero)
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{
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CGLReleaseContext(handle);
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handle = IntPtr.Zero;
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}
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}
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern CGLErrorCode CGLLockContext(IntPtr ctx);
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public CGLErrorCode Lock()
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{
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return CGLLockContext(handle);
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}
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern CGLErrorCode CGLUnlockContext(IntPtr ctx);
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public CGLErrorCode Unlock()
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{
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return CGLUnlockContext(handle);
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}
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern CGLErrorCode CGLSetCurrentContext(IntPtr ctx);
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[DllImport("/System/Library/Frameworks/OpenGL.framework/OpenGL")]
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private static extern IntPtr CGLGetCurrentContext();
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}
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}
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