/// <summary>
/// Initializes the RenderContext.
/// </summary>
public void Initialize()
{
_windowHandle = SGL.QueryComponents <RenderTarget>().Handle;
_deviceContext = NativeMethods.GetDC(_windowHandle);
var pfd = new PixelFormatDescriptor();
pfd.Size = (short)Marshal.SizeOf(pfd);
pfd.Version = 1;
pfd.FormatDescription = PixelFormatDescription.DrawToWindow |
PixelFormatDescription.SupportOpenGL |
PixelFormatDescription.DoubleBuffer;
pfd.PixelType = 0;
pfd.ColorBits = 24;
pfd.RedBits = 0;
pfd.RedShift = 0;
pfd.GreenBits = 0;
pfd.GreenShift = 0;
pfd.BlueBits = 0;
pfd.BlueShift = 0;
pfd.AlphaBits = 0;
pfd.AlphaShift = 0;
pfd.AccumBits = 0;
pfd.AccumRedBits = 0;
pfd.AccumGreenBits = 0;
pfd.AccumBlueBits = 0;
pfd.AccumAlphaBits = 0;
pfd.DepthBits = 24;
pfd.StencilBits = 8;
pfd.AuxBuffers = 0;
pfd.LayerType = 0;
pfd.Reserved = 0;
pfd.LayerMask = 0;
pfd.VisibleMask = 0;
pfd.DamageMask = 0;
int pixelFormat;
if ((pixelFormat = OpenGLInterops.ChoosePixelFormat(_deviceContext, ref pfd)) == 0)
{
throw new GraphicsException("Unable to choose pixel format.");
}
if (!OpenGLInterops.SetPixelFormat(_deviceContext, pixelFormat, ref pfd))
{
throw new GraphicsException("Unable to set pixel format.");
}
_renderContext = OpenGLInterops.wglCreateContext(_deviceContext);
OpenGLInterops.wglMakeCurrent(_deviceContext, _renderContext);
try
{
int[] attributes =
{
(int)ContextAttributes.MajorVersion, 3,
(int)ContextAttributes.MinorVersion, 3,
(int)ContextAttributes.Flags, (int)ContextAttributes.ForwardCompatible,
0
};
var hrc = OpenGLInterops.CreateContextWithAttributes(_deviceContext, IntPtr.Zero, attributes);
OpenGLInterops.wglMakeCurrent(IntPtr.Zero, IntPtr.Zero);
OpenGLInterops.wglDeleteContext(_renderContext);
OpenGLInterops.wglMakeCurrent(_deviceContext, hrc);
_renderContext = hrc;
}
catch (MissingMethodException)
{
throw new GraphicsException("Unable to create OpenGL 3.3 context.");
}
}
public static extern bool SetPixelFormat(IntPtr deviceContext, int pixelFormat,
ref PixelFormatDescriptor pixelFormatDescriptor);
/// <summary>
/// Initializes the RenderContext.
/// </summary>
public void Initialize()
{
_windowHandle = SGL.QueryComponents<RenderTarget>().Handle;
_deviceContext = NativeMethods.GetDC(_windowHandle);
var pfd = new PixelFormatDescriptor();
pfd.Size = (short)Marshal.SizeOf(pfd);
pfd.Version = 1;
pfd.FormatDescription = PixelFormatDescription.DrawToWindow |
PixelFormatDescription.SupportOpenGL |
PixelFormatDescription.DoubleBuffer;
pfd.PixelType = 0;
pfd.ColorBits = 24;
pfd.RedBits = 0;
pfd.RedShift = 0;
pfd.GreenBits = 0;
pfd.GreenShift = 0;
pfd.BlueBits = 0;
pfd.BlueShift = 0;
pfd.AlphaBits = 0;
pfd.AlphaShift = 0;
pfd.AccumBits = 0;
pfd.AccumRedBits = 0;
pfd.AccumGreenBits = 0;
pfd.AccumBlueBits = 0;
pfd.AccumAlphaBits = 0;
pfd.DepthBits = 24;
pfd.StencilBits = 8;
pfd.AuxBuffers = 0;
pfd.LayerType = 0;
pfd.Reserved = 0;
pfd.LayerMask = 0;
pfd.VisibleMask = 0;
pfd.DamageMask = 0;
int pixelFormat;
if ((pixelFormat = OpenGLInterops.ChoosePixelFormat(_deviceContext, ref pfd)) == 0)
{
throw new GraphicsException("Unable to choose pixel format.");
}
if (!OpenGLInterops.SetPixelFormat(_deviceContext, pixelFormat, ref pfd))
{
throw new GraphicsException("Unable to set pixel format.");
}
_renderContext = OpenGLInterops.wglCreateContext(_deviceContext);
OpenGLInterops.wglMakeCurrent(_deviceContext, _renderContext);
try
{
int[] attributes =
{
(int) ContextAttributes.MajorVersion, 3,
(int) ContextAttributes.MinorVersion, 3,
(int) ContextAttributes.Flags, (int) ContextAttributes.ForwardCompatible,
0
};
var hrc = OpenGLInterops.CreateContextWithAttributes(_deviceContext, IntPtr.Zero, attributes);
OpenGLInterops.wglMakeCurrent(IntPtr.Zero, IntPtr.Zero);
OpenGLInterops.wglDeleteContext(_renderContext);
OpenGLInterops.wglMakeCurrent(_deviceContext, hrc);
_renderContext = hrc;
}
catch (MissingMethodException)
{
throw new GraphicsException("Unable to create OpenGL 3.3 context.");
}
}
public static extern int ChoosePixelFormat(IntPtr deviceContext, ref PixelFormatDescriptor pixelFormatDescriptor);