bool IsAccelerationSupported()
{
IntPtr pf = IntPtr.Zero;
int count = 0;
Cgl.ChoosePixelFormat(new int[] { (int)Cgl.PixelFormatBool.Accelerated, 0 },
ref pf, ref count);
if (pf != IntPtr.Zero)
{
Cgl.DestroyPixelFormat(pf);
}
return(pf != IntPtr.Zero);
}
private GraphicsMode GetGraphicsMode(IntPtr context)
{
IntPtr cgl_context = Cocoa.SendIntPtr(context, Selector.Get("CGLContextObj"));
IntPtr cgl_format = Cgl.GetPixelFormat(cgl_context);
int id = 0; // CGL does not support the concept of a pixel format id
int color, depth, stencil, samples, accum;
bool doublebuffer, stereo;
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.ColorSize, out color);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.DepthSize, out depth);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.StencilSize, out stencil);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.Samples, out samples);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatInt.AccumSize, out accum);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatBool.Doublebuffer, out doublebuffer);
Cgl.DescribePixelFormat(cgl_format, 0, Cgl.PixelFormatBool.Stereo, out stereo);
return(new GraphicsMode((IntPtr)id, color, depth, stencil, samples, accum, doublebuffer ? 2 : 1, stereo));
}