/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
private void CreateDeviceContext(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(GetDisplay(), this.Handle);
_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(DevicePixelFormat controlReqFormat)
{
#region Support ES API
if (_ProfileType == ProfileType.Embedded)
{
DeviceContext.DefaultApi = KhronosVersion.ApiGles2;
}
#endregion
#region Create device context
_DeviceContext = DeviceContext.Create(GetDisplay(), this.Handle);
_DeviceContext.IncRef();
#endregion
#region Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
List <DevicePixelFormat> 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
}