/// <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 }