private void SetupDisplayLink()
{
if (displayLink != null)
{
return;
}
// Create a display link capable of being used with all active displays
displayLink = new CVDisplayLink();
// Set the renderer output callback function
displayLink.SetOutputCallback(MyDisplayLinkOutputCallback);
// Set the display link for the current renderer
CGLContext cglContext = openGLContext.CGLContext;
CGLPixelFormat cglPixelFormat = PixelFormat.CGLPixelFormat;
displayLink.SetCurrentDisplay(cglContext, cglPixelFormat);
}
public override void DrawInCGLContext (MonoMac.OpenGL.CGLContext glContext, CGLPixelFormat pixelFormat, double timeInterval, ref CVTimeStamp timeStamp)
{
GL.ClearColor (NSColor.Clear.UsingColorSpace (NSColorSpace.CalibratedRGB));
GL.Clear (ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Enable (EnableCap.DepthTest);
GL.Hint (HintTarget.LineSmoothHint, HintMode.Nicest);
GL.Hint (HintTarget.PolygonSmoothHint, HintMode.Nicest);
if (previousTime == 0)
previousTime = timeInterval;
rotation += 15.0 * (timeInterval - previousTime);
GL.LoadIdentity ();
double comp = 1 / Math.Sqrt (3.0);
GL.Rotate (rotation, comp, comp, comp);
drawCube ();
GL.Flush ();
previousTime = timeInterval;
GL.Disable (EnableCap.DepthTest);
GL.Hint (HintTarget.LineSmoothHint, HintMode.DontCare);
GL.Hint (HintTarget.PolygonSmoothHint, HintMode.DontCare);
}
public override bool CanDrawInCGLContext (CGLContext glContext, CGLPixelFormat pixelFormat, double timeInterval, ref CVTimeStamp timeStamp)
{
if (!animate)
previousTime = 0.0;
return animate;
}
public override CGLPixelFormat CopyCGLPixelFormatForDisplayMask (uint mask)
{
// make sure to add a null value
var attribs = new object [] {
CGLPixelFormatAttribute.Accelerated,
CGLPixelFormatAttribute.DoubleBuffer,
CGLPixelFormatAttribute.ColorSize, 24,
CGLPixelFormatAttribute.DepthSize, 16 };
CGLPixelFormat pixelFormat = new CGLPixelFormat (attribs);
return pixelFormat;
}
public CVReturn SetCurrentDisplay (CGLContext cglContext, CGLPixelFormat cglPixelFormat)
{
return CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext (this.handle, cglContext.Handle, cglPixelFormat.Handle);
}
public override CGLPixelFormat CopyCGLPixelFormatForDisplayMask (uint mask)
{
// make sure to add a null value
CGLPixelFormatAttribute[] attribs = new CGLPixelFormatAttribute[] {
CGLPixelFormatAttribute.Accelerated,
CGLPixelFormatAttribute.DoubleBuffer, CGLPixelFormatAttribute.ColorSize, (CGLPixelFormatAttribute)24, CGLPixelFormatAttribute.DepthSize, (CGLPixelFormatAttribute)16 };
int numPixs = -1;
CGLPixelFormat pixelFormat = new CGLPixelFormat (attribs, out numPixs);
return pixelFormat;
}