Estoy tratando de usar OpenGL en C#. He siguiente código que produce el error 2000 ERROR_INVALID_PIXEL_FORMAT
primeras definiciones:wglCreateContext en C# falla pero no en C++ administrado
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
public static extern IntPtr GetDC(IntPtr hWnd);
[StructLayout(LayoutKind.Sequential)]
public struct PIXELFORMATDESCRIPTOR
{
public void Init()
{
nSize = (ushort) Marshal.SizeOf(typeof (PIXELFORMATDESCRIPTOR));
nVersion = 1;
dwFlags = PFD_FLAGS.PFD_DRAW_TO_WINDOW | PFD_FLAGS.PFD_SUPPORT_OPENGL | PFD_FLAGS.PFD_DOUBLEBUFFER | PFD_FLAGS.PFD_SUPPORT_COMPOSITION;
iPixelType = PFD_PIXEL_TYPE.PFD_TYPE_RGBA;
cColorBits = 24;
cRedBits = cRedShift = cGreenBits = cGreenShift = cBlueBits = cBlueShift = 0;
cAlphaBits = cAlphaShift = 0;
cAccumBits = cAccumRedBits = cAccumGreenBits = cAccumBlueBits = cAccumAlphaBits = 0;
cDepthBits = 32;
cStencilBits = cAuxBuffers = 0;
iLayerType = PFD_LAYER_TYPES.PFD_MAIN_PLANE;
bReserved = 0;
dwLayerMask = dwVisibleMask = dwDamageMask = 0;
}
ushort nSize;
ushort nVersion;
PFD_FLAGS dwFlags;
PFD_PIXEL_TYPE iPixelType;
byte cColorBits;
byte cRedBits;
byte cRedShift;
byte cGreenBits;
byte cGreenShift;
byte cBlueBits;
byte cBlueShift;
byte cAlphaBits;
byte cAlphaShift;
byte cAccumBits;
byte cAccumRedBits;
byte cAccumGreenBits;
byte cAccumBlueBits;
byte cAccumAlphaBits;
byte cDepthBits;
byte cStencilBits;
byte cAuxBuffers;
PFD_LAYER_TYPES iLayerType;
byte bReserved;
uint dwLayerMask;
uint dwVisibleMask;
uint dwDamageMask;
}
[Flags]
public enum PFD_FLAGS : uint
{
PFD_DOUBLEBUFFER = 0x00000001,
PFD_STEREO = 0x00000002,
PFD_DRAW_TO_WINDOW = 0x00000004,
PFD_DRAW_TO_BITMAP = 0x00000008,
PFD_SUPPORT_GDI = 0x00000010,
PFD_SUPPORT_OPENGL = 0x00000020,
PFD_GENERIC_FORMAT = 0x00000040,
PFD_NEED_PALETTE = 0x00000080,
PFD_NEED_SYSTEM_PALETTE = 0x00000100,
PFD_SWAP_EXCHANGE = 0x00000200,
PFD_SWAP_COPY = 0x00000400,
PFD_SWAP_LAYER_BUFFERS = 0x00000800,
PFD_GENERIC_ACCELERATED = 0x00001000,
PFD_SUPPORT_DIRECTDRAW = 0x00002000,
PFD_DIRECT3D_ACCELERATED = 0x00004000,
PFD_SUPPORT_COMPOSITION = 0x00008000,
PFD_DEPTH_DONTCARE = 0x20000000,
PFD_DOUBLEBUFFER_DONTCARE = 0x40000000,
PFD_STEREO_DONTCARE = 0x80000000
}
public enum PFD_LAYER_TYPES : byte
{
PFD_MAIN_PLANE = 0,
PFD_OVERLAY_PLANE = 1,
PFD_UNDERLAY_PLANE = 255
}
public enum PFD_PIXEL_TYPE : byte
{
PFD_TYPE_RGBA = 0,
PFD_TYPE_COLORINDEX = 1
}
[DllImport("gdi32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
public static extern int ChoosePixelFormat(IntPtr hdc, [In] ref PIXELFORMATDESCRIPTOR ppfd);
[DllImport("gdi32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
public static extern bool SetPixelFormat(IntPtr hdc, int iPixelFormat, ref PIXELFORMATDESCRIPTOR ppfd);
[DllImport("opengl32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
public static extern IntPtr wglCreateContext(IntPtr hDC);
y ahora el código que falla:
IntPtr dc = Win.GetDC(hwnd);
var pixelformatdescriptor = new GL.PIXELFORMATDESCRIPTOR();
pixelformatdescriptor.Init();
var pixelFormat = GL.ChoosePixelFormat(dc, ref pixelformatdescriptor);
if(!GL.SetPixelFormat(dc, pixelFormat, ref pixelformatdescriptor))
throw new Win32Exception(Marshal.GetLastWin32Error());
IntPtr hglrc;
if((hglrc = GL.wglCreateContext(dc)) == IntPtr.Zero)
throw new Win32Exception(Marshal.GetLastWin32Error()); //<----- here I have exception
el mismo código en C++ administrada está trabajando
HDC dc = GetDC(hWnd);
PIXELFORMATDESCRIPTOR pf;
pf.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pf.nVersion = 1;
pf.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_SUPPORT_COMPOSITION;
pf.cColorBits = 24;
pf.cRedBits = pf.cRedShift = pf.cGreenBits = pf.cGreenShift = pf.cBlueBits = pf.cBlueShift = 0;
pf.cAlphaBits = pf.cAlphaShift = 0;
pf.cAccumBits = pf.cAccumRedBits = pf.cAccumGreenBits = pf.cAccumBlueBits = pf.cAccumAlphaBits = 0;
pf.cDepthBits = 32;
pf.cStencilBits = pf.cAuxBuffers = 0;
pf.iLayerType = PFD_MAIN_PLANE;
pf.bReserved = 0;
pf.dwLayerMask = pf.dwVisibleMask = pf.dwDamageMask = 0;
int ipf = ChoosePixelFormat(dc, &pf);
SetPixelFormat(dc, ipf, &pf);
HGLRC hglrc = wglCreateContext(dc);
Lo he probado en VIsta de 64 bits con tarjeta gráfica ATI y en Windows XP de 32 bits con Nvidia con el mismo resultado en ambos casos.
También quiero mencionar que no quiero usar ningún marco ya escrito para ello.
¿Alguien puede mostrarme dónde está el error en el código C# que está causando la excepción?