private IEnumerable <GraphicsMode> GetModesPFD(INativeWindow native)
{
WinWindowInfo window = native.WindowInfo as WinWindowInfo;
IntPtr deviceContext = window.DeviceContext;
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = API.PixelFormatDescriptorSize;
pfd.Version = API.PixelFormatDescriptorVersion;
pfd.Flags = PixelFormatDescriptorFlags.DRAW_TO_WINDOW | PixelFormatDescriptorFlags.SUPPORT_OPENGL;
if (Environment.OSVersion.Version.Major >= 6)
{
pfd.Flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
}
// ISSUE: reference to a compiler-generated field
this.\u003C\u003E7__wrapc = new bool[2]
{
false,
true
};
bool[] flagArray;
for (int index = 0; index < flagArray.Length; ++index)
{
bool generic_allowed = flagArray[index];
int pixel = 0;
while (WinGraphicsMode.DescribePixelFormat(deviceContext, ++pixel, (int)API.PixelFormatDescriptorSize, ref pfd) != 0)
{
if (generic_allowed || (pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) == (PixelFormatDescriptorFlags)0)
{
GraphicsMode fmt = new GraphicsMode(new IntPtr?((IntPtr)pixel), new ColorFormat((int)pfd.RedBits, (int)pfd.GreenBits, (int)pfd.BlueBits, (int)pfd.AlphaBits), (int)pfd.DepthBits, (int)pfd.StencilBits, 0, new ColorFormat((int)pfd.AccumBits), (pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != (PixelFormatDescriptorFlags)0 ? 2 : 1, (pfd.Flags & PixelFormatDescriptorFlags.STEREO) != (PixelFormatDescriptorFlags)0);
yield return(fmt);
}
}
}
}
// Note: there is no relevant ARB function.
internal static void SetGraphicsModePFD(GraphicsMode mode, WinWindowInfo window)
{
Debug.Write("Setting pixel format... ");
if (!mode.Index.HasValue)
{
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
}
if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
Functions.DescribePixelFormat(window.DeviceContext, (int)mode.Index.Value,
API.PixelFormatDescriptorSize, ref pfd);
Debug.WriteLine(mode.Index.ToString());
if (!Functions.SetPixelFormat(window.DeviceContext, (int)mode.Index.Value, ref pfd))
{
throw new GraphicsContextException(String.Format(
"Requested GraphicsMode not available. SetPixelFormat error: {0}", Marshal.GetLastWin32Error()));
}
}
// Note: there is no relevant ARB function.
internal static GraphicsMode SetGraphicsModePFD(WinGraphicsMode mode_selector,
GraphicsMode mode, WinWindowInfo window)
{
Debug.Write("Setting pixel format... ");
if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
if (!mode.Index.HasValue)
{
mode = mode_selector.SelectGraphicsMode(
mode.ColorFormat, mode.Depth, mode.Stencil,
mode.Samples, mode.AccumulatorFormat,
mode.Buffers, mode.Stereo);
}
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
Functions.DescribePixelFormat(
window.DeviceContext, (int)mode.Index.Value,
API.PixelFormatDescriptorSize, ref pfd);
Debug.WriteLine(mode.Index.ToString());
if (!Functions.SetPixelFormat(window.DeviceContext, (int)mode.Index.Value, ref pfd))
{
throw new GraphicsContextException(String.Format(
"Requested GraphicsMode not available. SetPixelFormat error: {0}",
Marshal.GetLastWin32Error()));
}
return(mode);
}
int ChoosePixelFormat(IntPtr hDc, ref PixelFormatDescriptor pPfd)
{
unsafe
{
fixed (PixelFormatDescriptor* pPfd_ptr = &pPfd)
{
return Delegates.wglChoosePixelFormat((IntPtr)hDc, (PixelFormatDescriptor*)pPfd_ptr);
}
}
}
int DescribePixelFormat(IntPtr hdc, int ipfd, UInt32 cjpfd, PixelFormatDescriptor[] ppfd)
{
unsafe
{
fixed (PixelFormatDescriptor* ppfd_ptr = ppfd)
{
return Delegates.wglDescribePixelFormat((IntPtr)hdc, (int)ipfd, (UInt32)cjpfd, (PixelFormatDescriptor*)ppfd_ptr);
}
}
}
static int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor pfd)
{
unsafe
{
fixed(PixelFormatDescriptor *ppfd = &pfd)
{
// Note: DescribePixelFormat found in gdi32 is extremely slow
// on nvidia, for some reason.
return(Wgl.Imports.DescribePixelFormat(hdc, ipfd, (uint)cjpfd, ppfd));
}
}
}
IEnumerable <GraphicsMode> GetModesPFD(INativeWindow native)
{
WinWindowInfo window = native.WindowInfo as WinWindowInfo;
IntPtr deviceContext = ((WinWindowInfo)window).DeviceContext;
Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
Debug.WriteLine("Retrieving PFD pixel formats... ");
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = API.PixelFormatDescriptorSize;
pfd.Version = API.PixelFormatDescriptorVersion;
pfd.Flags =
PixelFormatDescriptorFlags.SUPPORT_OPENGL |
PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
// Make sure we don't turn off Aero on Vista and newer.
if (Environment.OSVersion.Version.Major >= 6)
{
pfd.Flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
}
foreach (bool generic_allowed in new bool[] { false, true })
{
// Iterate through all accelerated formats first. Afterwards, iterate through non-accelerated formats.
// This should fix issue #2224, which causes OpenTK to fail on VMs without hardware acceleration.
int pixel = 0;
while (DescribePixelFormat(deviceContext, ++pixel, API.PixelFormatDescriptorSize, ref pfd) != 0)
{
// Ignore non-accelerated formats.
if (!generic_allowed && (pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) != 0)
{
continue;
}
GraphicsMode fmt = new GraphicsMode((IntPtr)pixel,
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0,
new ColorFormat(pfd.AccumBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
yield return(fmt);
}
}
}
void SetGraphicsModePFD(GraphicsMode mode, WinWindow window)
{
// Find out what we really got as a format:
IntPtr deviceContext = window.DeviceContext;
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = PixelFormatDescriptor.DefaultSize;
pfd.Version = PixelFormatDescriptor.DefaultVersion;
API.DescribePixelFormat(deviceContext, modeIndex, pfd.Size, ref pfd);
Debug.Print("WGL mode index: " + modeIndex.ToString());
if (!API.SetPixelFormat(window.DeviceContext, modeIndex, ref pfd))
{
throw new GraphicsContextException("SetPixelFormat failed. " +
"Error: " + Marshal.GetLastWin32Error());
}
}
static AccelerationType GetAccelerationType(ref PixelFormatDescriptor pfd)
{
AccelerationType type = AccelerationType.ICD;
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) != 0)
{
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_ACCELERATED) != 0)
{
type = AccelerationType.MCD;
}
else
{
type = AccelerationType.None;
}
}
return(type);
}
private void SetGraphicsModePFD(GraphicsMode mode, WinWindowInfo window)
{
if (!mode.Index.HasValue)
{
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
}
if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
PixelFormatDescriptor formatDescriptor = new PixelFormatDescriptor();
Functions.DescribePixelFormat(window.DeviceContext, (int)mode.Index.Value, (int)API.PixelFormatDescriptorSize, ref formatDescriptor);
if (!Functions.SetPixelFormat(window.DeviceContext, (int)mode.Index.Value, ref formatDescriptor))
{
throw new GraphicsContextException(string.Format("Requested GraphicsMode not available. SetPixelFormat error: {0}", (object)Marshal.GetLastWin32Error()));
}
}
private static AccelerationType GetAccelerationType(ref PixelFormatDescriptor pfd)
{
var type = AccelerationType.ICD;
if ((pfd.Flags & PixelFormatDescriptorFlags.GenericFormat) != 0)
{
if ((pfd.Flags & PixelFormatDescriptorFlags.GenericAccelerated) != 0)
{
type = AccelerationType.MCD;
}
else
{
type = AccelerationType.None;
}
}
return(type);
}
static GraphicsMode DescribePixelFormatPFD(IntPtr device, ref PixelFormatDescriptor pfd,
int pixelformat)
{
GraphicsMode created_mode = null;
if (Functions.DescribePixelFormat(device, pixelformat, pfd.Size, ref pfd) > 0)
{
created_mode = new GraphicsMode(
new IntPtr(pixelformat),
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0, // MSAA not supported when using PixelFormatDescriptor
new ColorFormat(pfd.AccumRedBits, pfd.AccumGreenBits, pfd.AccumBlueBits, pfd.AccumAlphaBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
}
return(created_mode);
}
void SelectGraphicsModePFD(GraphicsMode format, WinWindowInfo window)
{
IntPtr deviceContext = window.DeviceContext;
Debug.Print("Device context: {0}", deviceContext);
ColorFormat color = format.ColorFormat;
Debug.Print("Selecting pixel format PFD... ");
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = PixelFormatDescriptor.DefaultSize;
pfd.Version = PixelFormatDescriptor.DefaultVersion;
pfd.Flags =
PixelFormatDescriptorFlags.SUPPORT_OPENGL |
PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
pfd.ColorBits = (byte)(color.Red + color.Green + color.Blue);
pfd.PixelType = color.IsIndexed ? PixelType.INDEXED : PixelType.RGBA;
pfd.RedBits = (byte)color.Red;
pfd.GreenBits = (byte)color.Green;
pfd.BlueBits = (byte)color.Blue;
pfd.AlphaBits = (byte)color.Alpha;
pfd.DepthBits = (byte)format.Depth;
pfd.StencilBits = (byte)format.Stencil;
if (format.Depth <= 0)
{
pfd.Flags |= PixelFormatDescriptorFlags.DEPTH_DONTCARE;
}
if (format.Buffers > 1)
{
pfd.Flags |= PixelFormatDescriptorFlags.DOUBLEBUFFER;
}
modeIndex = API.ChoosePixelFormat(deviceContext, ref pfd);
if (modeIndex == 0)
{
throw new GraphicsModeException("The requested GraphicsMode is not available.");
}
}
void SetGraphicsModePFD(GraphicsMode mode, WinWindowInfo window)
{
// Find out what we really got as a format:
IntPtr deviceContext = window.DeviceContext;
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = PixelFormatDescriptor.DefaultSize;
pfd.Version = PixelFormatDescriptor.DefaultVersion;
API.DescribePixelFormat(deviceContext, modeIndex, pfd.Size, ref pfd);
Mode = new GraphicsMode(
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits, pfd.StencilBits,
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1);
Debug.Print("WGL mode index: " + modeIndex.ToString());
if (!API.SetPixelFormat(window.DeviceContext, modeIndex, ref pfd))
{
throw new GraphicsContextException(String.Format(
"Requested GraphicsMode not available. SetPixelFormat error: {0}", Marshal.GetLastWin32Error()));
}
}
internal static extern int ChoosePixelFormat(IntPtr dc, ref PixelFormatDescriptor pfd);
internal extern static Boolean SetPixelFormat(IntPtr hdc, int ipfd, ref PixelFormatDescriptor ppfd);
internal extern static unsafe int ChoosePixelFormat(IntPtr hDc, ref PixelFormatDescriptor pPfd);
IEnumerable<GraphicsMode> GetModesPFD(INativeWindow native)
{
WinWindowInfo window = native.WindowInfo as WinWindowInfo;
IntPtr deviceContext = ((WinWindowInfo)window).DeviceContext;
Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
Debug.WriteLine("Retrieving PFD pixel formats... ");
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pfd.Size = API.PixelFormatDescriptorSize;
pfd.Version = API.PixelFormatDescriptorVersion;
pfd.Flags =
PixelFormatDescriptorFlags.SUPPORT_OPENGL |
PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
// Make sure we don't turn off Aero on Vista and newer.
if (Environment.OSVersion.Version.Major >= 6)
{
pfd.Flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
}
foreach (bool generic_allowed in new bool[] { false, true })
{
// Iterate through all accelerated formats first. Afterwards, iterate through non-accelerated formats.
// This should fix issue #2224, which causes OpenTK to fail on VMs without hardware acceleration.
int pixel = 0;
while (DescribePixelFormat(deviceContext, ++pixel, API.PixelFormatDescriptorSize, ref pfd) != 0)
{
// Ignore non-accelerated formats.
if (!generic_allowed && (pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) != 0)
continue;
GraphicsMode fmt = new GraphicsMode((IntPtr)pixel,
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0,
new ColorFormat(pfd.AccumBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
yield return fmt;
}
}
}
private static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor pfd)
{
fixed (PixelFormatDescriptor* ppfd = &pfd)
return Wgl.Imports.DescribePixelFormat(hdc, ipfd, (uint) cjpfd, ppfd);
}
internal static bool SetPixelFormat(IntPtr hdc, int ipfd, PixelFormatDescriptor* ppfd);
internal extern static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, UInt32 cjpfd, PixelFormatDescriptor* ppfd);
internal extern static unsafe int ChoosePixelFormat(IntPtr hDc, ref PixelFormatDescriptor pPfd);
private static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor pfd)
{
fixed(PixelFormatDescriptor *ppfd = &pfd)
return(Wgl.Imports.DescribePixelFormat(hdc, ipfd, (uint)cjpfd, ppfd));
}
public static unsafe int ChoosePixelFormat(IntPtr hDc, PixelFormatDescriptor* pPfd)
{
return Wgl.Delegates.wglChoosePixelFormat(hDc, pPfd);
}
public static unsafe int ChoosePixelFormat(IntPtr hDc, ref PixelFormatDescriptor pPfd)
{
fixed (PixelFormatDescriptor* pPfd1 = &pPfd)
return Wgl.Delegates.wglChoosePixelFormat(hDc, pPfd1);
}
public static unsafe bool SetPixelFormat(IntPtr hdc, int ipfd, PixelFormatDescriptor* ppfd)
{
return Wgl.Delegates.wglSetPixelFormat(hdc, ipfd, ppfd);
}
public static unsafe bool SetPixelFormat(IntPtr hdc, int ipfd, ref PixelFormatDescriptor ppfd)
{
fixed (PixelFormatDescriptor* ppfd1 = &ppfd)
return Wgl.Delegates.wglSetPixelFormat(hdc, ipfd, ppfd1);
}
internal static extern bool SetPixelFormat(IntPtr dc, int format, ref PixelFormatDescriptor pfd);
internal static extern int ChoosePixelFormat(IntPtr dc, ref PixelFormatDescriptor pfd);
internal extern static unsafe Boolean SetPixelFormat(IntPtr hdc, int ipfd, PixelFormatDescriptor* ppfd);
public static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, uint cjpfd, PixelFormatDescriptor[] ppfd)
{
fixed (PixelFormatDescriptor* ppfd1 = ppfd)
return Wgl.Delegates.wglDescribePixelFormat(hdc, ipfd, cjpfd, ppfd1);
}
private void SetGraphicsModePFD(GraphicsMode mode, WinWindowInfo window)
{
if (!mode.Index.HasValue)
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
if (window == null)
throw new ArgumentNullException("window", "Must point to a valid window.");
PixelFormatDescriptor formatDescriptor = new PixelFormatDescriptor();
Functions.DescribePixelFormat(window.DeviceContext, (int) mode.Index.Value, (int) API.PixelFormatDescriptorSize, ref formatDescriptor);
if (!Functions.SetPixelFormat(window.DeviceContext, (int) mode.Index.Value, ref formatDescriptor))
throw new GraphicsContextException(string.Format("Requested GraphicsMode not available. SetPixelFormat error: {0}", (object) Marshal.GetLastWin32Error()));
}
static int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor pfd)
{
unsafe
{
fixed (PixelFormatDescriptor* ppfd = &pfd)
{
// Note: DescribePixelFormat found in gdi32 is extremely slow
// on nvidia, for some reason.
return Wgl.Imports.DescribePixelFormat(hdc, ipfd, (uint)cjpfd, ppfd);
}
}
}
static AccelerationType GetAccelerationType(ref PixelFormatDescriptor pfd)
{
AccelerationType type = AccelerationType.ICD;
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) != 0)
{
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_ACCELERATED) != 0)
{
type = AccelerationType.MCD;
}
else
{
type = AccelerationType.None;
}
}
return type;
}
internal extern static Boolean SetPixelFormat(IntPtr hdc, int ipfd, ref PixelFormatDescriptor ppfd);
GraphicsMode ChoosePixelFormatPFD(IntPtr device, GraphicsMode mode, AccelerationType requested_acceleration_type)
{
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
PixelFormatDescriptorFlags flags = 0;
flags |= PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
flags |= PixelFormatDescriptorFlags.SUPPORT_OPENGL;
if (mode.Stereo)
{
flags |= PixelFormatDescriptorFlags.STEREO;
}
if (System.Environment.OSVersion.Version.Major >= 6 &&
requested_acceleration_type != AccelerationType.None)
{
// Request a compositor-capable mode when running on
// Vista+ and using hardware acceleration. Without this,
// some modes will cause the compositor to turn off,
// which is very annoying to the user.
// Note: compositor-capable modes require hardware
// acceleration. Don't set this flag when running
// with software acceleration (e.g. over Remote Desktop
// as described in bug https://github.com/opentk/opentk/issues/35)
flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
}
int count = Functions.DescribePixelFormat(device, 1, API.PixelFormatDescriptorSize, ref pfd);
int best = 0;
int best_dist = int.MaxValue;
for (int index = 1; index <= count; index++)
{
int dist = 0;
bool valid = Functions.DescribePixelFormat(device, index, API.PixelFormatDescriptorSize, ref pfd) != 0;
valid &= GetAccelerationType(ref pfd) == requested_acceleration_type;
valid &= (pfd.Flags & flags) == flags;
valid &= pfd.PixelType == PixelType.RGBA; // indexed modes not currently supported
// heavily penalize single-buffered modes when the user requests double buffering
if ((pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) == 0 && mode.Buffers > 1)
dist += 1000;
valid &= Compare(pfd.ColorBits, mode.ColorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.RedBits, mode.ColorFormat.Red, ref dist);
valid &= Compare(pfd.GreenBits, mode.ColorFormat.Green, ref dist);
valid &= Compare(pfd.BlueBits, mode.ColorFormat.Blue, ref dist);
valid &= Compare(pfd.AlphaBits, mode.ColorFormat.Alpha, ref dist);
valid &= Compare(pfd.AccumBits, mode.AccumulatorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.AccumRedBits, mode.AccumulatorFormat.Red, ref dist);
valid &= Compare(pfd.AccumGreenBits, mode.AccumulatorFormat.Green, ref dist);
valid &= Compare(pfd.AccumBlueBits, mode.AccumulatorFormat.Blue, ref dist);
valid &= Compare(pfd.AccumAlphaBits, mode.AccumulatorFormat.Alpha, ref dist);
valid &= Compare(pfd.DepthBits, mode.Depth, ref dist);
valid &= Compare(pfd.StencilBits, mode.Stencil, ref dist);
if (valid && dist < best_dist)
{
best = index;
best_dist = dist;
}
}
return DescribePixelFormatPFD(device, ref pfd, best);
}
internal extern static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor ppfd);
internal static int ChoosePixelFormat(IntPtr hDc, PixelFormatDescriptor* pPfd);
GraphicsMode SelectGraphicsModePFD(ColorDepth color, int depth, int stencil, int samples, ColorDepth accum,
int buffers, bool stereo)
{
using (Control native_window = new Control())
using (WinWindowInfo window = new WinWindowInfo(native_window.Handle, null))
{
IntPtr deviceContext = ((WinWindowInfo)window).DeviceContext;
Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
Debug.Write("Selecting pixel format... ");
PixelFormatDescriptor pixelFormat = new PixelFormatDescriptor();
pixelFormat.Size = API.PixelFormatDescriptorSize;
pixelFormat.Version = API.PixelFormatDescriptorVersion;
pixelFormat.Flags =
PixelFormatDescriptorFlags.SUPPORT_OPENGL |
PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
pixelFormat.ColorBits = (byte)(color.Red + color.Green + color.Blue);
pixelFormat.PixelType = color.IsIndexed ? PixelType.INDEXED : PixelType.RGBA;
pixelFormat.RedBits = (byte)color.Red;
pixelFormat.GreenBits = (byte)color.Green;
pixelFormat.BlueBits = (byte)color.Blue;
pixelFormat.AlphaBits = (byte)color.Alpha;
if (accum.BitsPerPixel > 0)
{
pixelFormat.AccumBits = (byte)(accum.Red + accum.Green + accum.Blue);
pixelFormat.AccumRedBits = (byte)accum.Red;
pixelFormat.AccumGreenBits = (byte)accum.Green;
pixelFormat.AccumBlueBits = (byte)accum.Blue;
pixelFormat.AccumAlphaBits = (byte)accum.Alpha;
}
pixelFormat.DepthBits = (byte)depth;
pixelFormat.StencilBits = (byte)stencil;
if (depth <= 0) pixelFormat.Flags |= PixelFormatDescriptorFlags.DEPTH_DONTCARE;
if (stereo) pixelFormat.Flags |= PixelFormatDescriptorFlags.STEREO;
if (buffers > 1) pixelFormat.Flags |= PixelFormatDescriptorFlags.DOUBLEBUFFER;
int pixel = Functions.ChoosePixelFormat(deviceContext, ref pixelFormat);
if (pixel == 0)
throw new GraphicsModeException("The requested GraphicsMode is not available.");
// Find out what we really got as a format:
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pixelFormat.Size = API.PixelFormatDescriptorSize;
pixelFormat.Version = API.PixelFormatDescriptorVersion;
Functions.DescribePixelFormat(deviceContext, pixel, API.PixelFormatDescriptorSize, ref pfd);
GraphicsMode fmt = new GraphicsMode((IntPtr)pixel,
new ColorDepth(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0,
new ColorDepth(pfd.AccumBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
return fmt;
}
}
GraphicsMode SelectGraphicsModePFD(ColorDepth color, int depth, int stencil, int samples, ColorDepth accum,
int buffers, bool stereo)
{
using (Control native_window = new Control())
using (WinWindowInfo window = new WinWindowInfo(native_window.Handle, null))
{
IntPtr deviceContext = ((WinWindowInfo)window).DeviceContext;
Debug.WriteLine(String.Format("Device context: {0}", deviceContext));
Debug.Write("Selecting pixel format... ");
PixelFormatDescriptor pixelFormat = new PixelFormatDescriptor();
pixelFormat.Size = API.PixelFormatDescriptorSize;
pixelFormat.Version = API.PixelFormatDescriptorVersion;
pixelFormat.Flags =
PixelFormatDescriptorFlags.SUPPORT_OPENGL |
PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
pixelFormat.ColorBits = (byte)(color.Red + color.Green + color.Blue);
pixelFormat.PixelType = color.IsIndexed ? PixelType.INDEXED : PixelType.RGBA;
pixelFormat.RedBits = (byte)color.Red;
pixelFormat.GreenBits = (byte)color.Green;
pixelFormat.BlueBits = (byte)color.Blue;
pixelFormat.AlphaBits = (byte)color.Alpha;
if (accum.BitsPerPixel > 0)
{
pixelFormat.AccumBits = (byte)(accum.Red + accum.Green + accum.Blue);
pixelFormat.AccumRedBits = (byte)accum.Red;
pixelFormat.AccumGreenBits = (byte)accum.Green;
pixelFormat.AccumBlueBits = (byte)accum.Blue;
pixelFormat.AccumAlphaBits = (byte)accum.Alpha;
}
pixelFormat.DepthBits = (byte)depth;
pixelFormat.StencilBits = (byte)stencil;
if (depth <= 0)
{
pixelFormat.Flags |= PixelFormatDescriptorFlags.DEPTH_DONTCARE;
}
if (stereo)
{
pixelFormat.Flags |= PixelFormatDescriptorFlags.STEREO;
}
if (buffers > 1)
{
pixelFormat.Flags |= PixelFormatDescriptorFlags.DOUBLEBUFFER;
}
int pixel = Functions.ChoosePixelFormat(deviceContext, ref pixelFormat);
if (pixel == 0)
{
throw new GraphicsModeException("The requested GraphicsMode is not available.");
}
// Find out what we really got as a format:
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
pixelFormat.Size = API.PixelFormatDescriptorSize;
pixelFormat.Version = API.PixelFormatDescriptorVersion;
Functions.DescribePixelFormat(deviceContext, pixel, API.PixelFormatDescriptorSize, ref pfd);
GraphicsMode fmt = new GraphicsMode((IntPtr)pixel,
new ColorDepth(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0,
new ColorDepth(pfd.AccumBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
return(fmt);
}
}
public static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, PixelFormatDescriptor* ppfd)
{
return Wgl.Delegates.wglDescribePixelFormat(hdc, ipfd, (uint) cjpfd, ppfd);
}
// Note: there is no relevant ARB function.
internal static GraphicsMode SetGraphicsModePFD(WinGraphicsMode mode_selector,
GraphicsMode mode, WinWindowInfo window)
{
Debug.Write("Setting pixel format... ");
if (window == null)
throw new ArgumentNullException("window", "Must point to a valid window.");
if (!mode.Index.HasValue)
{
mode = mode_selector.SelectGraphicsMode(
mode.ColorFormat, mode.Depth, mode.Stencil,
mode.Samples, mode.AccumulatorFormat,
mode.Buffers, mode.Stereo);
}
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
Functions.DescribePixelFormat(
window.DeviceContext, (int)mode.Index.Value,
API.PixelFormatDescriptorSize, ref pfd);
Debug.WriteLine(mode.Index.ToString());
if (!Functions.SetPixelFormat(window.DeviceContext, (int)mode.Index.Value, ref pfd))
{
throw new GraphicsContextException(String.Format(
"Requested GraphicsMode not available. SetPixelFormat error: {0}",
Marshal.GetLastWin32Error()));
}
return mode;
}
internal static extern int DescribePixelFormat(IntPtr deviceContext, int pixel, int pfdSize, ref PixelFormatDescriptor pixelFormat);
public static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor ppfd)
{
fixed (PixelFormatDescriptor* ppfd1 = &ppfd)
return Wgl.Delegates.wglDescribePixelFormat(hdc, ipfd, (uint) cjpfd, ppfd1);
}
internal static extern bool SetPixelFormat(IntPtr dc, int format, ref PixelFormatDescriptor pfd);
private GraphicsMode ChoosePixelFormatPFD(IntPtr device, GraphicsMode mode,
AccelerationType requested_acceleration_type)
{
var pfd = new PixelFormatDescriptor();
PixelFormatDescriptorFlags flags = 0;
flags |= PixelFormatDescriptorFlags.DrawToWindow;
flags |= PixelFormatDescriptorFlags.SupportOpenGL;
if (mode.Stereo)
{
flags |= PixelFormatDescriptorFlags.Stereo;
}
if (Environment.OSVersion.Version.Major >= 6 &&
requested_acceleration_type != AccelerationType.None)
{
// Request a compositor-capable mode when running on
// Vista+ and using hardware acceleration. Without this,
// some modes will cause the compositor to turn off,
// which is very annoying to the user.
// Note: compositor-capable modes require hardware
// acceleration. Don't set this flag when running
// with software acceleration (e.g. over Remote Desktop
// as described in bug https://github.com/opentk/opentk/issues/35)
flags |= PixelFormatDescriptorFlags.SupportComposition;
}
var count = Gdi32.DescribePixelFormat(device, 1, PixelFormatDescriptor.SizeInBytes, ref pfd);
var best = 0;
var best_dist = int.MaxValue;
for (var index = 1; index <= count; index++)
{
var dist = 0;
var valid = Gdi32.DescribePixelFormat(device, index, PixelFormatDescriptor.SizeInBytes, ref pfd) != 0;
valid &= GetAccelerationType(ref pfd) == requested_acceleration_type;
valid &= (pfd.Flags & flags) == flags;
valid &= pfd.PixelType == PixelFormatDescriptorPixelTypes.Rgba; // indexed modes not currently supported
// heavily penalize single-buffered modes when the user requests double buffering
if ((pfd.Flags & PixelFormatDescriptorFlags.DoubleBuffer) == 0 && mode.Buffers > 1)
{
dist += 1000;
}
valid &= Compare(pfd.ColorBits, mode.ColorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.RedBits, mode.ColorFormat.Red, ref dist);
valid &= Compare(pfd.GreenBits, mode.ColorFormat.Green, ref dist);
valid &= Compare(pfd.BlueBits, mode.ColorFormat.Blue, ref dist);
valid &= Compare(pfd.AlphaBits, mode.ColorFormat.Alpha, ref dist);
valid &= Compare(pfd.AccumBits, mode.AccumulatorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.AccumRedBits, mode.AccumulatorFormat.Red, ref dist);
valid &= Compare(pfd.AccumGreenBits, mode.AccumulatorFormat.Green, ref dist);
valid &= Compare(pfd.AccumBlueBits, mode.AccumulatorFormat.Blue, ref dist);
valid &= Compare(pfd.AccumAlphaBits, mode.AccumulatorFormat.Alpha, ref dist);
valid &= Compare(pfd.DepthBits, mode.Depth, ref dist);
valid &= Compare(pfd.StencilBits, mode.Stencil, ref dist);
if (valid && dist < best_dist)
{
best = index;
best_dist = dist;
}
}
return(DescribePixelFormatPFD(device, ref pfd, best));
}
internal static extern int DescribePixelFormat(IntPtr deviceContext, int pixel, int pfdSize, ref PixelFormatDescriptor pixelFormat);
internal static int DescribePixelFormat(IntPtr hdc, int ipfd, uint cjpfd, PixelFormatDescriptor* ppfd);
static GraphicsMode DescribePixelFormatPFD(IntPtr device, ref PixelFormatDescriptor pfd,
int pixelformat)
{
GraphicsMode created_mode = null;
if (Functions.DescribePixelFormat(device, pixelformat, pfd.Size, ref pfd) > 0)
{
created_mode = new GraphicsMode(
new IntPtr(pixelformat),
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
pfd.DepthBits,
pfd.StencilBits,
0, // MSAA not supported when using PixelFormatDescriptor
new ColorFormat(pfd.AccumRedBits, pfd.AccumGreenBits, pfd.AccumBlueBits, pfd.AccumAlphaBits),
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
}
return created_mode;
}
internal extern static unsafe int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor ppfd);
GraphicsMode ChoosePixelFormatPFD(IntPtr device, GraphicsMode mode, AccelerationType requested_acceleration_type)
{
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
PixelFormatDescriptorFlags flags = 0;
flags |= PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
flags |= PixelFormatDescriptorFlags.SUPPORT_OPENGL;
if (mode.Stereo)
{
flags |= PixelFormatDescriptorFlags.STEREO;
}
if (System.Environment.OSVersion.Version.Major >= 6 &&
requested_acceleration_type != AccelerationType.None)
{
// Request a compositor-capable mode when running on
// Vista+ and using hardware acceleration. Without this,
// some modes will cause the compositor to turn off,
// which is very annoying to the user.
// Note: compositor-capable modes require hardware
// acceleration. Don't set this flag when running
// with software acceleration (e.g. over Remote Desktop
// as described in bug https://github.com/opentk/opentk/issues/35)
flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
}
int count = Functions.DescribePixelFormat(device, 1, API.PixelFormatDescriptorSize, ref pfd);
int best = 0;
int best_dist = int.MaxValue;
for (int index = 1; index <= count; index++)
{
int dist = 0;
bool valid = Functions.DescribePixelFormat(device, index, API.PixelFormatDescriptorSize, ref pfd) != 0;
valid &= GetAccelerationType(ref pfd) == requested_acceleration_type;
valid &= (pfd.Flags & flags) == flags;
valid &= pfd.PixelType == PixelType.RGBA; // indexed modes not currently supported
// heavily penalize single-buffered modes when the user requests double buffering
if ((pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) == 0 && mode.Buffers > 1)
{
dist += 1000;
}
valid &= Compare(pfd.ColorBits, mode.ColorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.RedBits, mode.ColorFormat.Red, ref dist);
valid &= Compare(pfd.GreenBits, mode.ColorFormat.Green, ref dist);
valid &= Compare(pfd.BlueBits, mode.ColorFormat.Blue, ref dist);
valid &= Compare(pfd.AlphaBits, mode.ColorFormat.Alpha, ref dist);
valid &= Compare(pfd.AccumBits, mode.AccumulatorFormat.BitsPerPixel, ref dist);
valid &= Compare(pfd.AccumRedBits, mode.AccumulatorFormat.Red, ref dist);
valid &= Compare(pfd.AccumGreenBits, mode.AccumulatorFormat.Green, ref dist);
valid &= Compare(pfd.AccumBlueBits, mode.AccumulatorFormat.Blue, ref dist);
valid &= Compare(pfd.AccumAlphaBits, mode.AccumulatorFormat.Alpha, ref dist);
valid &= Compare(pfd.DepthBits, mode.Depth, ref dist);
valid &= Compare(pfd.StencilBits, mode.Stencil, ref dist);
if (valid && dist < best_dist)
{
best = index;
best_dist = dist;
}
}
return(DescribePixelFormatPFD(device, ref pfd, best));
}
internal static extern bool SetPixelFormat(IntPtr hdc, int ipfd, ref PixelFormatDescriptor ppfd);
// Note: there is no relevant ARB function.
void SetGraphicsModePFD(GraphicsMode mode, WinWindowInfo window)
{
Debug.Write("Setting pixel format... ");
if (!mode.Index.HasValue)
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
if (window == null) throw new ArgumentNullException("window", "Must point to a valid window.");
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
Functions.DescribePixelFormat(window.DeviceContext, (int)mode.Index.Value,
API.PixelFormatDescriptorSize, ref pfd);
Debug.WriteLine(mode.Index.ToString());
if (!Functions.SetPixelFormat(window.DeviceContext, (int)mode.Index.Value, ref pfd))
throw new GraphicsContextException(String.Format(
"Requested GraphicsMode not available. SetPixelFormat error: {0}", Marshal.GetLastWin32Error()));
}
internal static extern int DescribePixelFormat(IntPtr hdc, int ipfd, int cjpfd, ref PixelFormatDescriptor ppfd);