/// <summary>
/// This function sets the pixel format of the underlying bitmap.
/// </summary>
/// <param name="hDC">The handle to the device context.</param>
/// <param name="bitCount">The bitcount.</param>
protected virtual bool SetPixelFormat(IntPtr hDC, int bitCount)
{
// Create the big lame pixel format majoo.
Win32.PIXELFORMATDESCRIPTOR pixelFormat = new Win32.PIXELFORMATDESCRIPTOR();
pixelFormat.Init();
// Set the values for the pixel format.
pixelFormat.nVersion = 1;
pixelFormat.dwFlags = (Win32.PFD_DRAW_TO_BITMAP | Win32.PFD_SUPPORT_OPENGL | Win32.PFD_SUPPORT_GDI);
pixelFormat.iPixelType = Win32.PFD_TYPE_RGBA;
pixelFormat.cColorBits = (byte)bitCount;
pixelFormat.cDepthBits = 32;
pixelFormat.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat;
if ((iPixelformat = Win32.ChoosePixelFormat(hDC, pixelFormat)) == 0)
{
return(false);
}
// Sets the pixel format
if (Win32.SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
{
// Clear the error and fail.
int _ = Marshal.GetLastWin32Error();
return(false);
}
return(true);
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="gl">The OpenGL context.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="bitDepth">The bit depth.</param>
/// <param name="parameter">The parameter.</param>
/// <returns></returns>
public override bool Create(OpenGL gl, int width, int height, int bitDepth, object parameter)
{
// Call the base.
base.Create(gl, width, height, bitDepth, parameter);
// Cast the parameter to the device context.
try
{
windowHandle = (IntPtr)parameter;
}
catch
{
throw new Exception("A valid Window Handle must be provided for the NativeWindowRenderContextProvider");
}
// Get the window device context.
deviceContextHandle = Win32.GetDC(windowHandle);
// Setup a pixel format.
Win32.PIXELFORMATDESCRIPTOR pfd = new Win32.PIXELFORMATDESCRIPTOR();
pfd.Init();
pfd.nVersion = 1;
pfd.dwFlags = Win32.PFD_DRAW_TO_WINDOW | Win32.PFD_SUPPORT_OPENGL | Win32.PFD_DOUBLEBUFFER;
pfd.iPixelType = Win32.PFD_TYPE_RGBA;
pfd.cColorBits = (byte)bitDepth;
pfd.cDepthBits = 16;
pfd.cStencilBits = 8;
pfd.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat;
if ((iPixelformat = Win32.ChoosePixelFormat(deviceContextHandle, pfd)) == 0)
{
return(false);
}
// Sets the pixel format
if (Win32.SetPixelFormat(deviceContextHandle, iPixelformat, pfd) == 0)
{
return(false);
}
// Create the render context.
renderContextHandle = Win32.wglCreateContext(deviceContextHandle);
// Make the context current.
MakeCurrent();
// Return success.
return(true);
}
/// <summary>
/// This function sets the pixel format of the underlying bitmap.
/// </summary>
/// <param name="bitCount">The bitcount.</param>
protected virtual bool SetPixelFormat(IntPtr hDC, int bitCount)
{
// Create the big lame pixel format majoo.
Win32.PIXELFORMATDESCRIPTOR pixelFormat = new Win32.PIXELFORMATDESCRIPTOR();
pixelFormat.Init();
// Set the values for the pixel format.
pixelFormat.nVersion = 1;
pixelFormat.dwFlags = (Win32.PFD_DRAW_TO_BITMAP | Win32.PFD_SUPPORT_OPENGL | Win32.PFD_SUPPORT_GDI);
pixelFormat.iPixelType = Win32.PFD_TYPE_RGBA;
pixelFormat.cColorBits = (byte)bitCount;
pixelFormat.cDepthBits = 32;
pixelFormat.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat;
if((iPixelformat = Win32.ChoosePixelFormat(hDC, pixelFormat)) == 0 )
return false;
// Sets the pixel format
if (Win32.SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
{
int lastError = Marshal.GetLastWin32Error();
return false;
}
return true;
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="gl">The OpenGL context.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="bitDepth">The bit depth.</param>
/// <param name="parameter">The parameter</param>
/// <returns></returns>
public override bool Create(OpenGL gl, int width, int height, int bitDepth, object parameter)
{
// Call the base.
base.Create(gl, width, height, bitDepth, parameter);
// Create a new window class, as basic as possible.
Win32.WNDCLASSEX wndClass = new Win32.WNDCLASSEX();
wndClass.Init();
wndClass.style = Win32.ClassStyles.HorizontalRedraw | Win32.ClassStyles.VerticalRedraw | Win32.ClassStyles.OwnDC;
wndClass.lpfnWndProc = wndProcDelegate;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = IntPtr.Zero;
wndClass.hIcon = IntPtr.Zero;
wndClass.hCursor = IntPtr.Zero;
wndClass.hbrBackground = IntPtr.Zero;
wndClass.lpszMenuName = null;
wndClass.lpszClassName = "SharpGLRenderWindow";
wndClass.hIconSm = IntPtr.Zero;
Win32.RegisterClassEx(ref wndClass);
// Create the window. Position and size it.
windowHandle = Win32.CreateWindowEx(0,
"SharpGLRenderWindow",
"",
Win32.WindowStyles.WS_CLIPCHILDREN | Win32.WindowStyles.WS_CLIPSIBLINGS | Win32.WindowStyles.WS_POPUP,
0, 0, width, height,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
// Get the window device context.
deviceContextHandle = Win32.GetDC(windowHandle);
// Setup a pixel format.
Win32.PIXELFORMATDESCRIPTOR pfd = new Win32.PIXELFORMATDESCRIPTOR();
pfd.Init();
pfd.nVersion = 1;
pfd.dwFlags = Win32.PFD_DRAW_TO_WINDOW | Win32.PFD_SUPPORT_OPENGL | Win32.PFD_DOUBLEBUFFER;
pfd.iPixelType = Win32.PFD_TYPE_RGBA;
pfd.cColorBits = (byte)bitDepth;
pfd.cDepthBits = 16;
pfd.cStencilBits = 8;
pfd.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat;
if ((iPixelformat = Win32.ChoosePixelFormat(deviceContextHandle, pfd)) == 0)
{
return(false);
}
// Sets the pixel format
if (Win32.SetPixelFormat(deviceContextHandle, iPixelformat, pfd) == 0)
{
return(false);
}
// Create the render context.
renderContextHandle = Win32.wglCreateContext(deviceContextHandle);
// Make the context current.
MakeCurrent();
// Return success.
return(true);
}