| private SetPixelFormat ( IntPtr hDC, int iPixelFormat, [ ppfd ) : int | ||
| hDC | IntPtr | |
| iPixelFormat | int | |
| ppfd | [ | |
| return | int | |
/// <summary>
/// This function sets the pixel format of the underlying bitmap.
/// </summary>
/// <param name="hDC"></param>
/// <param name="bitCount">The bitcount.</param>
protected virtual bool SetPixelFormat(IntPtr hDC, int bitCount)
{
// Create the big lame pixel format majoo.
var pixelFormat = new 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 = Win32.ChoosePixelFormat(hDC, pixelFormat);
if (iPixelformat == 0)
{
return(false);
}
// Sets the pixel format
if (Win32.SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
{
int lastError = Marshal.GetLastWin32Error();
return(false);
}
return(true);
}
/// <summary>
/// This function sets the pixel format of the underlying bitmap.
/// </summary>
/// <param name="hDC"></param>
/// <param name="parameters">parameters.</param>
protected void SetPixelFormat(IntPtr hDC, ContextGenerationParams parameters)
{
// Create the big lame pixel format majoo.
var pdf = new PixelFormatDescriptor();
pdf.Init();
// Set the values for the pixel format.
pdf.nVersion = 1;
pdf.dwFlags = (Win32.PFD_DRAW_TO_BITMAP | Win32.PFD_SUPPORT_OPENGL | Win32.PFD_SUPPORT_GDI);
pdf.iPixelType = Win32.PFD_TYPE_RGBA;
pdf.cColorBits = parameters.ColorBits;
pdf.cDepthBits = parameters.DepthBits;
pdf.cStencilBits = parameters.StencilBits;
pdf.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat = Win32.ChoosePixelFormat(hDC, pdf);
if (iPixelformat == 0)
{
throw new Exception(string.Format("ChoosePixelFormat([{0}], [{1}]) failed!", hDC, pdf));
}
// Sets the pixel format
if (false == Win32.SetPixelFormat(hDC, iPixelformat, pdf))
{
int lastError = Marshal.GetLastWin32Error();
throw new Exception(string.Format("SetPixelFormat([{0}], [{1}], [{2}]) failed! Win32Error:[{3}].", hDC, iPixelformat, pdf, lastError));
}
}
/// <summary>
/// This function sets the pixel format of the underlying bitmap.
/// </summary>
/// <param name="hDC"></param>
/// <param name="bitCount">The bitcount.</param>
protected void SetPixelFormat(IntPtr hDC, int bitCount)
{
// Create the big lame pixel format majoo.
var pixelFormat = new 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 = Win32.ChoosePixelFormat(hDC, pixelFormat);
if (iPixelformat == 0)
{
throw new Exception(string.Format("ChoosePixelFormat([{0}], [{1}]) failed!", hDC, pixelFormat));
}
// Sets the pixel format
if (Win32.SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
{
int lastError = Marshal.GetLastWin32Error();
throw new Exception(string.Format("SetPixelFormat([{0}], [{1}], [{2}]) failed! Win32Error:[{3}].", hDC, iPixelformat, pixelFormat, lastError));
}
}
/// <summary>
/// Create a new window class, as basic as possible.
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="bitDepth"></param>
/// <returns></returns>
private bool CreateBasicRenderContext(int width, int height, int bitDepth)
{
var wndClass = new WNDCLASSEX();
wndClass.Init();
wndClass.style = ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw | 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 = "CSharpGLRenderWindow";
wndClass.hIconSm = IntPtr.Zero;
Win32.RegisterClassEx(ref wndClass);
// Create the window. Position and size it.
windowHandle = Win32.CreateWindowEx(0,
"CSharpGLRenderWindow",
"",
WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS | WindowStyles.WS_POPUP,
0, 0, width, height,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
// Get the window device context.
this.DeviceContextHandle = Win32.GetDC(windowHandle);
// Setup a pixel format.
var pfd = new 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 = Win32.ChoosePixelFormat(this.DeviceContextHandle, pfd);
if (iPixelformat == 0)
{
return(false);
}
// Sets the pixel format
if (Win32.SetPixelFormat(this.DeviceContextHandle, iPixelformat, pfd) == 0)
{
return(false);
}
return(true);
}
/// <summary>
/// Create a new window class, as basic as possible.
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="parameters"></param>
/// <returns></returns>
private bool CreateBasicRenderContext(int width, int height, ContextGenerationParams parameters)
{
var wndClass = new WNDCLASSEX();
wndClass.Init();
wndClass.style = ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw | ClassStyles.OwnDC;
wndClass.lpfnWndProc = wndProcDelegate;
wndClass.lpszClassName = "CSharpGLRenderWindow";
Win32.RegisterClassEx(ref wndClass);
// Create the window. Position and size it.
windowHandle = Win32.CreateWindowEx(0,
"CSharpGLRenderWindow",
"",
WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS | WindowStyles.WS_POPUP,
0, 0, width, height,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
// Get the window device context.
this.DeviceContextHandle = Win32.GetDC(windowHandle);
// Setup a pixel format.
var pfd = new 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 = parameters.ColorBits;
pfd.cAccumBits = parameters.AccumBits;
pfd.cAccumRedBits = parameters.AccumRedBits;
pfd.cAccumGreenBits = parameters.AccumGreenBits;
pfd.cAccumBlueBits = parameters.AccumBlueBits;
pfd.cAccumAlphaBits = parameters.AccumAlphaBits;
pfd.cDepthBits = parameters.DepthBits;
pfd.cStencilBits = parameters.StencilBits;
pfd.iLayerType = Win32.PFD_MAIN_PLANE;
// Match an appropriate pixel format
int iPixelformat = Win32.ChoosePixelFormat(this.DeviceContextHandle, pfd);
if (iPixelformat == 0)
{
return(false);
}
// Sets the pixel format
if (false == Win32.SetPixelFormat(this.DeviceContextHandle, iPixelformat, pfd))
{
return(false);
}
// Create the render context.
this.RenderContextHandle = Win32.wglCreateContext(this.DeviceContextHandle);
return(true);
}
/// <summary>
/// Only valid to be called after the render context is created, this function attempts to
/// move the render context to the OpenGL version originally requested. If this is > 2.1, this
/// means building a new context. If this fails, we'll have to make do with 2.1.
/// </summary>
/// <param name="parameters"></param>
protected bool UpdateContextVersion(ContextGenerationParams parameters)
{
// If the request version number is anything up to and including 2.1, standard render contexts
// will provide what we need (as long as the graphics card drivers are up to date).
// Now the none-trivial case. We must use the WGL_create_context extension to
// attempt to create a 3.0+ context.
try
{
var wglChoosePixelFormatARB = GL.Instance.GetDelegateFor("wglChoosePixelFormatARB", GLDelegates.typeof_bool_IntPtr_intN_floatN_uint_intN_uintN) as GLDelegates.bool_IntPtr_intN_floatN_uint_intN_uintN;
if (wglChoosePixelFormatARB == null)
{
return(false);
}
var wglCreateContextAttribs = GL.Instance.GetDelegateFor("wglCreateContextAttribsARB", GLDelegates.typeof_IntPtr_IntPtr_IntPtr_intN) as GLDelegates.IntPtr_IntPtr_IntPtr_intN;
if (wglCreateContextAttribs == null)
{
return(false);
}
int major, minor;
GetHighestVersion(out major, out minor);
if ((major > 2) || (major == 2 && minor > 1))
{
int[] attribList = new int[]
{
WinGL.WGL_SUPPORT_OPENGL_ARB, (int)GL.GL_TRUE,
WinGL.WGL_DRAW_TO_WINDOW_ARB, (int)GL.GL_TRUE,
WinGL.WGL_DOUBLE_BUFFER_ARB, (int)GL.GL_TRUE,
WinGL.WGL_ACCELERATION_ARB, WinGL.WGL_FULL_ACCELERATION_ARB,
WinGL.WGL_PIXEL_TYPE_ARB, WinGL.WGL_TYPE_RGBA_ARB,
WinGL.WGL_COLOR_BITS_ARB, parameters.ColorBits,
WinGL.WGL_ACCUM_BITS_ARB, parameters.AccumBits,
WinGL.WGL_ACCUM_RED_BITS_ARB, parameters.AccumRedBits,
WinGL.WGL_ACCUM_GREEN_BITS_ARB, parameters.AccumGreenBits,
WinGL.WGL_ACCUM_BLUE_BITS_ARB, parameters.AccumBlueBits,
WinGL.WGL_ACCUM_ALPHA_BITS_ARB, parameters.AccumAlphaBits,
WinGL.WGL_DEPTH_BITS_ARB, parameters.DepthBits,
WinGL.WGL_STENCIL_BITS_ARB, parameters.StencilBits,
0, //End
};
IntPtr dc = this.DeviceContextHandle;
// Match an appropriate pixel format
int[] pixelFormat = new int[1];
uint[] numFormats = new uint[1];
if (false == wglChoosePixelFormatARB(dc, attribList, null, 1, pixelFormat, numFormats))
{
return(false);
}
// Sets the pixel format
if (false == Win32.SetPixelFormat(dc, pixelFormat[0], new PixelFormatDescriptor()))
{
return(false);
}
int[] attributes =
{
WinGL.WGL_CONTEXT_MAJOR_VERSION_ARB,
major,
WinGL.WGL_CONTEXT_MINOR_VERSION_ARB,
minor,
WinGL.WGL_CONTEXT_PROFILE_MASK_ARB,
WinGL.WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
//#if DEBUG
// GL.WGL_CONTEXT_FLAGS, GL.WGL_CONTEXT_DEBUG_BIT,// this is a debug context
//#endif
0
};
IntPtr hrc = wglCreateContextAttribs(dc, IntPtr.Zero, attributes);
Win32.wglMakeCurrent(IntPtr.Zero, IntPtr.Zero);
Win32.wglDeleteContext(this.RenderContextHandle);
Win32.wglMakeCurrent(dc, hrc);
this.RenderContextHandle = hrc;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
Log.Write(ex);
}
return(true);
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="openGLVersion">The desired OpenGL version.</param>
/// <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(GLVersion openGLVersion, int width, int height, int bitDepth, object parameter)
{
// Call the base.
base.Create(openGLVersion, width, height, bitDepth, parameter);
// Create a new window class, as basic as possible.
WNDCLASSEX wndClass = new WNDCLASSEX();
wndClass.Init();
wndClass.style = ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw | 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 = "CSharpGLRenderWindow";
wndClass.hIconSm = IntPtr.Zero;
Win32.RegisterClassEx(ref wndClass);
// Create the window. Position and size it.
windowHandle = Win32.CreateWindowEx(0,
"CSharpGLRenderWindow",
"",
WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS | 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.
PIXELFORMATDESCRIPTOR pfd = new 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();
// Update the context if required.
UpdateContextVersion();
// Return success.
return(true);
}