private WinGLContext(IntPtr WinHandle)
{
this.hWnd = WinHandle;
RegisterClassOnce();
int Width = 512;
int Height = 512;
if (WinHandle == IntPtr.Zero)
{
WindowStyle style = WindowStyle.OverlappedWindow | WindowStyle.ClipChildren | WindowStyle.ClipSiblings;
ExtendedWindowStyle ex_style = ParentStyleEx;
var rect = new RECT()
{
left = 0,
top = 0,
right = Width,
bottom = Height,
};
AdjustWindowRectEx(ref rect, style, false, ex_style);
IntPtr window_name = Marshal.StringToHGlobalAuto("Title");
hWnd = CreateWindowEx(
ex_style, ClassName, window_name, style,
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
IntPtr.Zero, IntPtr.Zero, Instance, IntPtr.Zero
);
if (hWnd == IntPtr.Zero)
{
throw new Exception(String.Format("Failed to create window. Error: {0}", Marshal.GetLastWin32Error()));
}
}
DC = GetDC(hWnd);
var pfd = new PixelFormatDescriptor();
pfd.Size = (short)sizeof(PixelFormatDescriptor);
pfd.Version = 1;
pfd.Flags = PixelFormatDescriptorFlags.DRAW_TO_WINDOW | PixelFormatDescriptorFlags.SUPPORT_OPENGL | PixelFormatDescriptorFlags.DOUBLEBUFFER;
pfd.LayerType = 0;
pfd.PixelType = PixelType.RGBA; // PFD_TYPE_RGBA
//pfd.ColorBits = 32;
pfd.ColorBits = 24;
pfd.DepthBits = 16;
pfd.StencilBits = 8;
var pf = ChoosePixelFormat(DC, &pfd);
//pf = 10;
if (!SetPixelFormat(DC, pf, &pfd))
{
Console.WriteLine("Error SetPixelFormat failed.");
}
this.Context = WGL.wglCreateContext(DC);
if (SharedContext != IntPtr.Zero)
{
//Console.WriteLine("SharedContext!"); Console.ReadKey();
if (!WGL.wglShareLists(SharedContext, this.Context))
{
throw(new InvalidOperationException("Can't share lists"));
}
}
MakeCurrent();
Console.Out.WriteLineColored(ConsoleColor.Yellow, "Version:{0}.{1}", GL.glGetInteger(GL.GL_MAJOR_VERSION), GL.glGetInteger(GL.GL_MINOR_VERSION));
DynamicLibraryFactory.MapLibraryToType<Extension>(new DynamicLibraryGL());
GL.LoadAllOnce();
#if false
if (Extension.wglCreateContextAttribsARB != null)
{
ReleaseCurrent();
WGL.wglDeleteContext(this.Context);
fixed (int* AttribListPtr = new int[] { (int)ArbCreateContext.MajorVersion, 3, (int)ArbCreateContext.MinorVersion, 1, 0, 0 })
{
this.Context = Extension.wglCreateContextAttribsARB(DC, SharedContext, AttribListPtr);
}
if (this.Context == IntPtr.Zero) throw(new Exception("Error creating context"));
MakeCurrent();
Console.WriteLine("OpenGL Version: {0}", Marshal.PtrToStringAnsi(new IntPtr(GL.glGetString(GL.GL_VERSION))));
//Console.ReadKey();
}
#endif
if (SharedContext == IntPtr.Zero)
{
SharedContext = this.Context;
}
if (Extension.wglSwapIntervalEXT != null)
{
Extension.wglSwapIntervalEXT(0);
}
//RECT clientRect;
//GetClientRect(hWnd, &clientRect);
}
public static unsafe extern int ChoosePixelFormat(IntPtr hDc, PixelFormatDescriptor* pPfd);
public static unsafe extern Boolean SetPixelFormat(IntPtr hdc, int ipfd, PixelFormatDescriptor* ppfd);
public static unsafe extern int wglDescribePixelFormat(IntPtr hdc, int ipfd, UInt32 cjpfd, PixelFormatDescriptor* ppfd);