/// <summary>
/// Creates a new graphics context.
/// </summary>
private void _createGraphicsContext(DevicePixelFormat pixelFormat)
{
_graphicsContext = GraphicsManager.CreateGraphicsContext(_getWindowHandle());
#region Set Pixel Format
DevicePixelFormatCollection pixelFormats = _graphicsContext.PixelsFormats;
System.Collections.Generic.List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(pixelFormat);
if ((matchingPixelFormats.Count == 0) && pixelFormat.MultisampleBits > 0)
{
// Try to select the maximum multisample configuration
int multisampleBits = 0;
pixelFormats.ForEach(delegate(DevicePixelFormat item) { multisampleBits = Math.Max(multisampleBits, item.MultisampleBits); });
pixelFormat.MultisampleBits = multisampleBits;
matchingPixelFormats = pixelFormats.Choose(pixelFormat);
}
if ((matchingPixelFormats.Count == 0) && pixelFormat.DoubleBuffer)
{
// Try single buffered pixel formats
pixelFormat.DoubleBuffer = false;
matchingPixelFormats = pixelFormats.Choose(pixelFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(String.Format("unable to find a suitable pixel format: {0}", pixelFormats.GuessChooseError(pixelFormat)));
}
}
else if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(String.Format("unable to find a suitable pixel format: {0}", pixelFormats.GuessChooseError(pixelFormat)));
}
_graphicsContext.SetPixelFormat(matchingPixelFormats[0]);
#endregion
// TODO: Platform specific extension checker
if (WGL.IsExtensionSupported(_graphicsContext.DeviceHandle.Handle, WGL.EXT.SwapControl))
{
// TODO: Handle tear
WGL.SwapIntervalEXT(SwapInterval);
}
}
/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
private void CreateDeviceContext(DevicePixelFormat controlReqFormat)
{
#region Create device context
_DeviceContext = DeviceContext.Create(GetDisplay(), GetWindowHandle());
_DeviceContext.IncRef();
#endregion
#region Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if ((matchingPixelFormats.Count == 0) && controlReqFormat.MultisampleBits > 0)
{
// Try to select the maximum multisample configuration
int multisampleBits = 0;
pixelFormats.ForEach(delegate(DevicePixelFormat item) { multisampleBits = Math.Max(multisampleBits, item.MultisampleBits); });
controlReqFormat.MultisampleBits = multisampleBits;
matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
}
if ((matchingPixelFormats.Count == 0) && controlReqFormat.DoubleBuffer)
{
// Try single buffered pixel formats
controlReqFormat.DoubleBuffer = false;
matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(String.Format("unable to find a suitable pixel format: {0}", pixelFormats.GuessChooseError(controlReqFormat)));
}
}
else if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(String.Format("unable to find a suitable pixel format: {0}", pixelFormats.GuessChooseError(controlReqFormat)));
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
#endregion
#region Set V-Sync
if (Gl.PlatformExtensions.SwapControl)
{
int swapInterval = SwapInterval;
// Mask value in case it is not supported
if (!Gl.PlatformExtensions.SwapControlTear && swapInterval == -1)
{
swapInterval = 1;
}
_DeviceContext.SwapInterval(swapInterval);
}
#endregion
}
/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
private void CreateDeviceContext(IntPtr displayHandle, IntPtr windowHandle, DevicePixelFormat controlReqFormat)
{
#region Support ES/SC API
switch (_ProfileType)
{
case ProfileType.Embedded:
DeviceContext.DefaultAPI = KhronosVersion.ApiGles2;
break;
case ProfileType.SecurityCritical2:
DeviceContext.DefaultAPI = KhronosVersion.ApiGlsc2;
break;
}
#endregion
#region Create device context
DeviceContext = DeviceContext.Create(displayHandle, windowHandle);
DeviceContext.IncRef();
#endregion
#region Set pixel format
DevicePixelFormatCollection pixelFormats = DeviceContext.PixelsFormats;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0 && controlReqFormat.MultisampleBits > 0)
{
// Try to select the maximum multisample configuration
int multisampleBits = 0;
pixelFormats.ForEach(delegate(DevicePixelFormat item) { multisampleBits = Math.Max(multisampleBits, item.MultisampleBits); });
controlReqFormat.MultisampleBits = multisampleBits;
matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
}
if (matchingPixelFormats.Count == 0 && controlReqFormat.DoubleBuffer)
{
// Try single buffered pixel formats
controlReqFormat.DoubleBuffer = false;
matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(
$"unable to find a suitable pixel format: {pixelFormats.GuessChooseError(controlReqFormat)}");
}
}
else if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException(
$"unable to find a suitable pixel format: {pixelFormats.GuessChooseError(controlReqFormat)}");
}
DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
#endregion
#region Set V-Sync
if (Gl.PlatformExtensions.SwapControl)
{
int swapInterval = SwapInterval;
// Mask value in case it is not supported
if (!Gl.PlatformExtensions.SwapControlTear && swapInterval == -1)
{
swapInterval = 1;
}
DeviceContext.SwapInterval(swapInterval);
}
#endregion
}