/// <summary>
/// Construct a NativeWindow on an OS window.
/// </summary>
/// <param name="display">
/// A <see cref="IntPtr"/> that specifies the display handle to be passed to <see cref="Egl.GetDisplay(IntPtr)"/>.
/// </param>
/// <param name="windowHandle">
/// A <see cref="IntPtr"/> that specifies the handle of the OS window.
/// </param>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> used for choosing the NativeWindow pixel format configuration. It can
/// be null; in this case the pixel format will be set elsewhere.
/// </param>
public NativeWindow(IntPtr display, IntPtr windowHandle, DevicePixelFormat pixelFormat)
: base(display)
{
try {
// Hold the window handle in case pixel format will be set later
_WindowHandle = windowHandle;
// Choose appropriate pixel format
if (pixelFormat != null)
{
pixelFormat.RenderWindow = true;
IntPtr configId = ChoosePixelFormat(_Display, _EglVersion, pixelFormat);
List <int> attribs = new List <int>();
if (pixelFormat.DoubleBuffer)
{
attribs.AddRange(new[] { Egl.RENDER_BUFFER, Egl.BACK_BUFFER });
}
attribs.Add(Egl.NONE);
CreateHandle(configId, attribs.ToArray());
}
} catch {
Dispose();
throw;
}
}
/// <summary>
/// Construct a NativePBuffer with a specific pixel format and size.
/// </summary>
/// <param name="display">
///
/// </param>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format and the ancillary buffers required.
/// </param>
/// <param name="width">
/// A <see cref="UInt32"/> that specifies the width of the P-Buffer, in pixels.
/// </param>
/// <param name="height">
/// A <see cref="UInt32"/> that specifies the height of the P-Buffer, in pixels.
/// </param>
public NativePBuffer(IntPtr display, DevicePixelFormat pixelFormat, uint width, uint height)
: base(display)
{
if (pixelFormat == null)
{
throw new ArgumentNullException(nameof(pixelFormat));
}
try {
// Choose appropriate pixel format
pixelFormat.RenderWindow = false; // XXX
pixelFormat.RenderPBuffer = true;
IntPtr configId = ChoosePixelFormat(_Display, _EglVersion, pixelFormat);
List <int> attribs = new List <int>();
attribs.AddRange(new[] { Egl.WIDTH, (int)width });
attribs.AddRange(new[] { Egl.HEIGHT, (int)height });
attribs.Add(Egl.NONE);
CreateHandle(configId, attribs.ToArray());
} catch {
Dispose();
throw;
}
}
/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
private void CreateDeviceContext(DevicePixelFormat controlReqFormat)
{
#region Support ES API
if (_ProfileType == ProfileType.Embedded)
{
DeviceContext.DefaultApi = KhronosVersion.ApiGles2;
}
#endregion
#region Create device context
_DeviceContext = DeviceContext.Create(GetDisplay(), this.Handle);
_DeviceContext.IncRef();
#endregion
#region Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
List <DevicePixelFormat> 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>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
if (_PixelFormatSet == true)
{
throw new InvalidOperationException("pixel format already set");
}
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
bool res;
// Note (from MSDN): Setting the pixel format of a window more than once can lead to significant complications for the Window Manager
// and for multithread applications, so it is not allowed. An application can only set the pixel format of a window one time. Once a
// window's pixel format is set, it cannot be changed.
res = Wgl.DescribePixelFormat(DeviceContext, pixelFormat.FormatIndex, (uint)pDescriptor.nSize, ref pDescriptor);
Debug.Assert(res);
// Set choosen pixel format
res = Wgl.SetPixelFormat(DeviceContext, pixelFormat.FormatIndex, ref pDescriptor);
Debug.Assert(res);
// Unable to set pixel format again
_PixelFormatSet = true;
}
/// <summary>
/// Set pixel format by letting the driver choose the best pixel format following the criteria.
/// </summary>
/// <param name="pixelFormat">
///
/// </param>
private void SetDisplayablePixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
List <int> attribIList = new List <int>();
List <float> attribFList = new List <float>();
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
uint[] countFormatAttribsValues = new uint[1];
int[] choosenFormats = new int[4];
// Let choose pixel formats
if (!Wgl.ChoosePixelFormatARB(_DeviceContext, attribIList.ToArray(), attribFList.ToArray(), (uint)choosenFormats.Length, choosenFormats, countFormatAttribsValues))
{
Win32Exception innerException = new Win32Exception(Marshal.GetLastWin32Error());
throw new InvalidOperationException(String.Format("unable to choose pixel format: {0}", innerException.Message), innerException);
}
// Set choosen pixel format
if (Wgl.SetPixelFormat(_DeviceContext, choosenFormats[0], ref pDescriptor) == false)
{
Win32Exception innerException = new Win32Exception(Marshal.GetLastWin32Error());
throw new InvalidOperationException(String.Format("unable to set pixel format {0}: {1}", pixelFormat.FormatIndex, innerException.Message), innerException);
}
}
/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
protected void CreateDeviceContext()
{
// Create device context
_DeviceContext = DeviceContextFactory.Create(this);
_DeviceContext.IncRef();
// Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
DevicePixelFormat controlReqFormat = new DevicePixelFormat();
controlReqFormat.ColorBits = (int)ColorBits;
controlReqFormat.DepthBits = (int)DepthBits;
controlReqFormat.StencilBits = (int)StencilBits;
controlReqFormat.MultisampleBits = (int)MultisampleBits;
controlReqFormat.DoubleBuffer = DoubleBuffer;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException("unable to find a suitable pixel format");
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
if (_PixelFormatSet == true)
{
throw new InvalidOperationException("pixel format already set");
}
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
// Note (from MSDN): Setting the pixel format of a window more than once can lead to significant complications for the Window Manager
// and for multithread applications, so it is not allowed. An application can only set the pixel format of a window one time. Once a
// window's pixel format is set, it cannot be changed.
if (Wgl.DescribePixelFormat(DeviceContext, pixelFormat.FormatIndex, (uint)pDescriptor.nSize, ref pDescriptor) == false)
{
Win32Exception innerException = new Win32Exception(Marshal.GetLastWin32Error());
throw new InvalidOperationException(String.Format("unable to describe pixel format, {0}", innerException.Message), innerException);
}
// Set choosen pixel format
if (Wgl.SetPixelFormat(DeviceContext, pixelFormat.FormatIndex, ref pDescriptor) == false)
{
Win32Exception innerException = new Win32Exception(Marshal.GetLastWin32Error());
throw new InvalidOperationException(String.Format("unable to set pixel format, {0}", innerException.Message), innerException);
}
// Unable to set pixel format again
_PixelFormatSet = true;
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
List <int> configAttribs = new List <int>();
if (Version >= Egl.Version_120)
{
configAttribs.AddRange(new int[] { Egl.RENDERABLE_TYPE, Egl.OPENGL_ES2_BIT });
}
configAttribs.AddRange(new int[] {
Egl.CONFIG_ID, pixelFormat.FormatIndex,
});
configAttribs.Add(Egl.NONE);
int[] configCount = new int[1];
IntPtr[] configs = new IntPtr[1];
if (Egl.ChooseConfig(_Display, configAttribs.ToArray(), configs, 1, configCount) == false)
{
throw new InvalidOperationException("unable to choose configuration");
}
if (configCount[0] == 0)
{
throw new InvalidOperationException("no available configuration");
}
IntPtr config = configs[0];
_Config = config;
}
/// <summary>
/// Construct a NativePBuffer with a specific pixel format and size.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format and the ancillary buffers required.
/// </param>
/// <param name="width">
/// A <see cref="UInt32"/> that specifies the width of the P-Buffer, in pixels.
/// </param>
/// <param name="height">
/// A <see cref="UInt32"/> that specifies the height of the P-Buffer, in pixels.
/// </param>
public NativePBuffer(DevicePixelFormat pixelFormat, uint width, uint height)
{
if (pixelFormat == null)
throw new ArgumentNullException("pixelFormat");
if (!Wgl.CurrentExtensions.Pbuffer_ARB && !Wgl.CurrentExtensions.Pbuffer_EXT)
throw new NotSupportedException("WGL_(ARB|EXT)_pbuffer not implemented");
if (Gl._NativeWindow == null)
throw new InvalidOperationException("no underlying native window", Gl._InitializationException);
try {
// Uses screen device context
_DeviceContext = Wgl.GetDC(Gl._NativeWindow.Handle);
// Choose appropriate pixel format
pixelFormat.RenderWindow = false; // XXX
pixelFormat.RenderPBuffer = true;
pixelFormat.DoubleBuffer = true;
int pixelFormatIndex = ChoosePixelFormat(_DeviceContext, pixelFormat);
if (Wgl.CurrentExtensions.Pbuffer_ARB)
_Handle = Wgl.CreatePbufferARB(_DeviceContext, pixelFormatIndex, (int)width, (int)height, new int[] { 0 });
else
_Handle = Wgl.CreatePbufferEXT(_DeviceContext, pixelFormatIndex, (int)width, (int)height, new int[] { 0 });
if (_Handle == IntPtr.Zero)
throw new InvalidOperationException("unable to create P-Buffer", GetPlatformExceptionCore());
} catch {
Dispose();
throw;
}
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
throw new ArgumentNullException("pixelFormat");
if (IsPixelFormatSet == true)
throw new InvalidOperationException("pixel format already set");
#if CHOOSE_PIXEL_FORMAT_FALLBACK
try {
#endif
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
// Note (from MSDN): Setting the pixel format of a window more than once can lead to significant complications for the Window Manager
// and for multithread applications, so it is not allowed. An application can only set the pixel format of a window one time. Once a
// window's pixel format is set, it cannot be changed.
if (Wgl.DescribePixelFormat(_DeviceContext, pixelFormat.FormatIndex, (uint)pDescriptor.nSize, ref pDescriptor) == 0)
throw new InvalidOperationException(String.Format("unable to describe pixel format {0}", pixelFormat.FormatIndex), GetPlatformException());
// Set choosen pixel format
if (!Wgl.SetPixelFormat(_DeviceContext, pixelFormat.FormatIndex, ref pDescriptor))
throw new InvalidOperationException(String.Format("unable to set pixel format {0}: {1}", pixelFormat.FormatIndex), GetPlatformException());
#if CHOOSE_PIXEL_FORMAT_FALLBACK
} catch (InvalidOperationException) {
// Try using default ChoosePixelFormat*
SetDisplayablePixelFormat(pixelFormat);
}
#endif
IsPixelFormatSet = true;
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
private static int ChoosePixelFormat(IntPtr deviceContext, DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
List <int> attribIList = new List <int>();
List <float> attribFList = new List <float>();
uint[] countFormatAttribsValues = new uint[1];
int[] choosenFormats = new int[4];
attribIList.AddRange(new int[] { Wgl.SUPPORT_OPENGL_ARB, Gl.TRUE });
if (pixelFormat.RenderWindow)
{
attribIList.AddRange(new int[] { Wgl.DRAW_TO_WINDOW_ARB, Gl.TRUE });
}
if (pixelFormat.RenderPBuffer)
{
attribIList.AddRange(new int[] { Wgl.DRAW_TO_PBUFFER_ARB, Gl.TRUE });
}
if (pixelFormat.RgbaUnsigned)
{
attribIList.AddRange(new int[] { Wgl.PIXEL_TYPE_ARB, Wgl.TYPE_RGBA_ARB });
}
if (pixelFormat.RgbaFloat)
{
attribIList.AddRange(new int[] { Wgl.PIXEL_TYPE_ARB, Wgl.TYPE_RGBA_FLOAT_ARB });
}
if (pixelFormat.ColorBits > 0)
{
attribIList.AddRange(new int[] { Wgl.COLOR_BITS_ARB, pixelFormat.ColorBits });
}
if (pixelFormat.DepthBits > 0)
{
attribIList.AddRange(new int[] { Wgl.DEPTH_BITS_ARB, pixelFormat.DepthBits });
}
if (pixelFormat.StencilBits > 0)
{
attribIList.AddRange(new int[] { Wgl.STENCIL_BITS_ARB, pixelFormat.StencilBits });
}
if (pixelFormat.DoubleBuffer)
{
attribIList.AddRange(new int[] { Wgl.DOUBLE_BUFFER_ARB, pixelFormat.StencilBits });
}
attribIList.Add(0);
// Let choose pixel formats
if (!Wgl.ChoosePixelFormatARB(deviceContext, attribIList.ToArray(), attribFList.ToArray(), (uint)choosenFormats.Length, choosenFormats, countFormatAttribsValues))
{
throw new InvalidOperationException("unable to choose pixel format", GetPlatformExceptionCore());
}
return(choosenFormats[0]);
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
public override void ChoosePixelFormat(DevicePixelFormat pixelFormat)
{
if (_NativeSurface.Handle != IntPtr.Zero)
{
throw new InvalidOperationException("pixel format already set");
}
_Config = ChoosePixelFormat(Display, Version, pixelFormat);
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
_FBConfig = pixelFormat.XFbConfig;
_XVisualInfo = pixelFormat.XVisualInfo;
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
// Note: GLX does not really need a SetPixelFormat operation
// Framebuffer configuration
FBConfig = pixelFormat.XFbConfig;
// X Visual Information
XVisualInfo = pixelFormat.XVisualInfo;
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
public override void ChoosePixelFormat(DevicePixelFormat pixelFormat)
{
if (_NativeSurface == null)
{
return; // Support EGL_KHR_surfaceless_context
}
if (_NativeSurface.Handle != IntPtr.Zero)
{
throw new InvalidOperationException("pixel format already set");
}
_Config = ChoosePixelFormat(Display, Version, pixelFormat);
IsPixelFormatSet = true;
}
/// <summary>
/// This is called immediately after the surface is first created.
/// </summary>
/// <param name="holder">
/// The SurfaceHolder whose surface is being created.
/// </param>
public void SurfaceCreated(ISurfaceHolder holder)
{
// Problem with static constructors? Ensure manual initialization
Egl.Initialize(); Gl.Initialize();
// Get actual native window handle
_NativeWindowHandle = ANativeWindow_fromSurface(JNIEnv.Handle, holder.Surface.Handle);
// Create device context
_DeviceContext = DeviceContext.Create(IntPtr.Zero, _NativeWindowHandle);
_DeviceContext.IncRef();
// Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
DevicePixelFormat controlReqFormat = new DevicePixelFormat();
controlReqFormat.RgbaUnsigned = true;
controlReqFormat.RenderWindow = true;
controlReqFormat.ColorBits = 24;
//controlReqFormat.DepthBits = (int)DepthBits;
//controlReqFormat.StencilBits = (int)StencilBits;
//controlReqFormat.MultisampleBits = (int)MultisampleBits;
//controlReqFormat.DoubleBuffer = true;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException("unable to find a suitable pixel format");
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
// Create OpenGL context using compatibility profile
if ((_RenderContext = _DeviceContext.CreateContext(IntPtr.Zero)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create render context");
}
// Make context current
if (_DeviceContext.MakeCurrent(_RenderContext) == false)
{
throw new InvalidOperationException("unable to make context current");
}
// Raise relative event
OnContextCreated();
StartRendering(30.0f);
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
public override void ChoosePixelFormat(DevicePixelFormat pixelFormat)
{
if (IsPixelFormatSet == true)
throw new InvalidOperationException("pixel format already set");
// Choose pixel format
int pixelFormatIndex = ChoosePixelFormat(_DeviceContext, pixelFormat);
// Set choosen pixel format
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
if (Wgl.SetPixelFormat(_DeviceContext, pixelFormatIndex, ref pDescriptor) == false)
throw new InvalidOperationException("unable to set pixel format", GetPlatformException());
IsPixelFormatSet = true;
}
void impl_ChoosePixelFormat(DevicePixelFormat pixelFormat)
{
// Create pixel format descriptor
_pfd = new Win32.PIXELFORMATDESCRIPTOR()
{
nSize = (ushort)System.Runtime.InteropServices.Marshal.SizeOf(typeof(OpenGL.Win32.PIXELFORMATDESCRIPTOR)),
nVersion = 1,
dwFlags = OpenGL.Win32.PFD_DRAW_TO_WINDOW | OpenGL.Win32.PFD_SUPPORT_OPENGL | OpenGL.Win32.PFD_DOUBLEBUFFER,
iPixelType = OpenGL.Win32.PFD_TYPE_RGBA,
cColorBits = (byte)pixelFormat.ColorBits,
cDepthBits = (byte)pixelFormat.DepthBits,
iLayerType = OpenGL.Win32.PFD_PLANE_MAIN,
};
// Choose pixel format
_pixelFormat = Win32.ChoosePixelFormat(_hdc, ref _pfd);
}
/// <summary>
/// Create an off-screen buffer.
/// </summary>
/// <returns>
/// It returns a <see cref="INativePBuffer"/> that implements a native P-Buffer on the underlying platform.
/// </returns>
/// <exception cref='NotSupportedException'>
/// Exception thrown if the current platform is not supported.
/// </exception>
public static INativePBuffer CreatePBuffer(DevicePixelFormat pixelFormat, uint width, uint height)
{
#if !MONODROID
if (Egl.IsRequired == false)
{
switch (Platform.CurrentPlatformId)
{
case Platform.Id.WindowsNT:
return(new DeviceContextWGL.NativePBuffer(pixelFormat, width, height));
default:
throw new NotSupportedException(String.Format("platform {0} not supported", Platform.CurrentPlatformId));
}
}
else
#endif
return(new DeviceContextEGL.NativePBuffer(pixelFormat, width, height));
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException(nameof(pixelFormat));
}
if (_NativeSurface == null)
{
return; // Support EGL_KHR_surfaceless_context
}
if (_NativeSurface.Handle != IntPtr.Zero)
{
throw new InvalidOperationException("pixel format already set");
}
List <int> configAttribs = new List <int>();
if (Version >= Egl.Version_120)
{
configAttribs.AddRange(new[] { Egl.RENDERABLE_TYPE, Egl.OPENGL_ES2_BIT });
}
configAttribs.AddRange(new[] {
Egl.CONFIG_ID, pixelFormat.FormatIndex
});
configAttribs.Add(Egl.NONE);
int[] configCount = new int[1];
IntPtr[] configs = new IntPtr[1];
if (Egl.ChooseConfig(Display, configAttribs.ToArray(), configs, 1, configCount) == false)
{
throw new InvalidOperationException("unable to choose configuration");
}
if (configCount[0] == 0)
{
throw new InvalidOperationException("no available configuration");
}
_Config = configs[0];
IsPixelFormatSet = true;
}
private DevicePixelFormatCollection GetPixelFormats_Win32()
{
DevicePixelFormatCollection pixelFormats = new DevicePixelFormatCollection();
Wgl.PIXELFORMATDESCRIPTOR pixelDescr = new Wgl.PIXELFORMATDESCRIPTOR();
int pixelFormatsCount = Wgl.DescribePixelFormat(_DeviceContext, 0, 0, ref pixelDescr);
for (int i = 1; i <= pixelFormatsCount; i++) {
Wgl.DescribePixelFormat(_DeviceContext, i, (uint)Marshal.SizeOf(typeof(Wgl.PIXELFORMATDESCRIPTOR)), ref pixelDescr);
if ((pixelDescr.dwFlags & Wgl.PixelFormatDescriptorFlags.SupportOpenGL) == 0)
continue;
DevicePixelFormat pixelFormat = new DevicePixelFormat();
pixelFormat.FormatIndex = i;
pixelFormat.RgbaUnsigned = true;
pixelFormat.RgbaFloat = false;
pixelFormat.RenderWindow = true;
pixelFormat.RenderBuffer = false;
pixelFormat.DoubleBuffer = (pixelDescr.dwFlags & Wgl.PixelFormatDescriptorFlags.Doublebuffer) != 0;
pixelFormat.SwapMethod = 0;
pixelFormat.StereoBuffer = (pixelDescr.dwFlags & Wgl.PixelFormatDescriptorFlags.Stereo) != 0;
pixelFormat.ColorBits = pixelDescr.cColorBits;
pixelFormat.DepthBits = pixelDescr.cDepthBits;
pixelFormat.StencilBits = pixelDescr.cStencilBits;
pixelFormat.MultisampleBits = 0;
pixelFormat.RenderPBuffer = false;
pixelFormat.SRGBCapable = false;
pixelFormats.Add(pixelFormat);
}
return (pixelFormats);
}
private int GetPixelFormatPriority(DevicePixelFormat pixelFormat)
{
int priority = 0;
if (!IsRequiredBuffer(BufferType.Depth) && pixelFormat.DepthBits > 0)
{
priority -= 1;
}
if (!IsRequiredBuffer(BufferType.Stencil) && pixelFormat.StencilBits > 0)
{
priority -= 1;
}
if (!IsRequiredBuffer(BufferType.Multisample) && pixelFormat.MultisampleBits > 0)
{
priority -= 1;
}
if (pixelFormat.DoubleBuffer)
{
priority += 3;
}
return(priority);
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
public override void ChoosePixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
{
throw new ArgumentNullException("pixelFormat");
}
int screen = Glx.XDefaultScreen(_Display);
// Get basic visual
Glx.XVisualInfo visual;
IntPtr config;
List <int> attributes = new List <int>();
if (pixelFormat.RenderWindow)
{
attributes.AddRange(new int[] { Glx.DRAWABLE_TYPE, (int)Glx.WINDOW_BIT });
}
if (pixelFormat.RgbaUnsigned)
{
attributes.AddRange(new int[] { Glx.RENDER_TYPE, (int)Glx.RGBA_BIT });
}
if (pixelFormat.RgbaFloat)
{
attributes.AddRange(new int[] { Glx.RENDER_TYPE, (int)Glx.RGBA_FLOAT_BIT_ARB });
}
if (pixelFormat.DoubleBuffer)
{
attributes.AddRange(new int[] { Glx.DOUBLEBUFFER, Gl.TRUE });
}
if (pixelFormat.ColorBits > 0)
{
switch (pixelFormat.ColorBits)
{
case 16:
attributes.AddRange(new int[] { Glx.RED_SIZE, 5, Glx.GREEN_SIZE, 6, Glx.BLUE_SIZE, 8, Glx.ALPHA_SIZE, 5 });
break;
case 24:
attributes.AddRange(new int[] { Glx.RED_SIZE, 8, Glx.GREEN_SIZE, 8, Glx.BLUE_SIZE, 8 });
break;
case 32:
attributes.AddRange(new int[] { Glx.RED_SIZE, 8, Glx.GREEN_SIZE, 8, Glx.BLUE_SIZE, 8, Glx.ALPHA_SIZE, 8 });
break;
default:
if (pixelFormat.ColorBits < 16)
{
attributes.AddRange(new int[] { Glx.RED_SIZE, 1, Glx.GREEN_SIZE, 1, Glx.BLUE_SIZE, 1 });
}
else
{
int bits = pixelFormat.ColorBits / 4;
attributes.AddRange(new int[] { Glx.RED_SIZE, bits, Glx.GREEN_SIZE, bits, Glx.BLUE_SIZE, bits });
}
break;
}
}
if (pixelFormat.DepthBits > 0)
{
attributes.AddRange(new int[] { Glx.DEPTH_SIZE, pixelFormat.DepthBits });
}
if (pixelFormat.StencilBits > 0)
{
attributes.AddRange(new int[] { Glx.STENCIL_SIZE, pixelFormat.StencilBits });
}
attributes.Add(0);
unsafe {
int[] choosenConfigCount = new int[1];
IntPtr *choosenConfigs = Glx.ChooseFBConfig(_Display, screen, attributes.ToArray(), choosenConfigCount);
if (choosenConfigCount[0] == 0)
{
throw new InvalidOperationException("unable to choose visual");
}
config = *choosenConfigs;
KhronosApi.LogComment("Choosen config is 0x{0}", config.ToString("X8"));
visual = Glx.GetVisualFromFBConfig(_Display, config);
KhronosApi.LogComment("Choosen visual is {0}", visual);
Glx.XFree((IntPtr)choosenConfigs);
}
_FBConfig = config;
_XVisualInfo = visual;
IsPixelFormatSet = true;
}
/// <summary>
/// Copy this DevicePixelFormat
/// </summary>
/// <returns>
/// It returns a <see cref="DevicePixelFormat"/> equals to this DevicePixelFormat.
/// </returns>
public DevicePixelFormat Copy()
{
DevicePixelFormat copy = (DevicePixelFormat)MemberwiseClone();
return(copy);
}
/// <summary>
/// Callback method for filtering valid pixel formats for this GraphicsSurface.
/// </summary>
/// <param name="pFormat">
/// A <see cref="DevicePixelFormat"/> to be validated by derived implementation.
/// </param>
/// <returns>
/// It returns true in the case the pixel format is valid for usage in the derived implementation,
/// otherwise it returns false.
/// </returns>
private static bool ValidPixelFormat(DevicePixelFormat pFormat)
{
// The pixel format must be able to render on a window
return (pFormat.RenderWindow);
}
/// <summary>
/// Construct a NativePBuffer with a specific pixel format and size.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format and the ancillary buffers required.
/// </param>
/// <param name="width">
/// A <see cref="UInt32"/> that specifies the width of the P-Buffer, in pixels.
/// </param>
/// <param name="height">
/// A <see cref="UInt32"/> that specifies the height of the P-Buffer, in pixels.
/// </param>
public NativePBuffer(DevicePixelFormat pixelFormat, uint width, uint height)
: this(DefaultDisplay, pixelFormat, width, height)
{
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
private static IntPtr ChoosePixelFormat(IntPtr display, KhronosVersion version, DevicePixelFormat pixelFormat)
{
if (version == null)
{
throw new ArgumentNullException(nameof(version));
}
if (pixelFormat == null)
{
throw new ArgumentNullException(nameof(pixelFormat));
}
List <int> configAttribs = new List <int>();
int[] configCount = new int[1];
IntPtr[] configs = new IntPtr[8];
int surfaceType = 0;
if (version >= Egl.Version_120)
{
configAttribs.AddRange(new[] { Egl.RENDERABLE_TYPE, Egl.OPENGL_ES2_BIT });
}
if (pixelFormat.RenderWindow)
{
surfaceType |= Egl.WINDOW_BIT;
}
if (pixelFormat.RenderPBuffer)
{
surfaceType |= Egl.PBUFFER_BIT;
}
if (surfaceType != 0)
{
configAttribs.AddRange(new[] { Egl.SURFACE_TYPE, surfaceType });
}
switch (pixelFormat.ColorBits)
{
case 24:
configAttribs.AddRange(new[] { Egl.RED_SIZE, 8, Egl.GREEN_SIZE, 8, Egl.BLUE_SIZE, 8 });
break;
case 32:
configAttribs.AddRange(new[] { Egl.RED_SIZE, 8, Egl.GREEN_SIZE, 8, Egl.BLUE_SIZE, 8, Egl.ALPHA_SIZE, 8 });
break;
default:
configAttribs.AddRange(new[] { Egl.BUFFER_SIZE, pixelFormat.ColorBits });
break;
}
if (pixelFormat.DepthBits > 0)
{
configAttribs.AddRange(new[] { Egl.DEPTH_SIZE, pixelFormat.DepthBits });
}
if (pixelFormat.StencilBits > 0)
{
configAttribs.AddRange(new[] { Egl.STENCIL_SIZE, pixelFormat.StencilBits });
}
configAttribs.Add(Egl.NONE);
if (Egl.ChooseConfig(display, configAttribs.ToArray(), configs, configs.Length, configCount) == false)
{
throw new InvalidOperationException("unable to choose configuration");
}
if (configCount[0] == 0)
{
throw new InvalidOperationException("no available configuration");
}
return(configs[0]);
}
private int GetPixelFormatPriority(DevicePixelFormat pixelFormat)
{
int priority = 0;
if (!IsRequiredBuffer(BufferType.Depth) && pixelFormat.DepthBits > 0)
priority -= 1;
if (!IsRequiredBuffer(BufferType.Stencil) && pixelFormat.StencilBits > 0)
priority -= 1;
if (!IsRequiredBuffer(BufferType.Multisample) && pixelFormat.MultisampleBits > 0)
priority -= 1;
if (pixelFormat.DoubleBuffer)
priority += 3;
return (priority);
}
/// <summary>
/// Create the device context and set the pixel format.
/// </summary>
private void CreateDeviceContext(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(GetDisplay(), this.Handle);
_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>
/// Confirm pixel format assigned to this surface. XXX
/// </summary>
/// <param name="pFormat">
/// A <see cref="DevicePixelFormat"/> defining the available surface buffers
/// and their definitions.
/// </param>
/// <remarks>
/// This routine shall be called after a successfull call to SetPixelFormat.
/// </remarks>
public void SetBufferConfiguration(DevicePixelFormat pFormat)
{
// Determine available buffers
mSurfaceBuffers = 0;
if (pFormat.ColorBits > 0) {
if (pFormat.SRGBCapable == false)
mSurfaceBuffers |= BufferType.Color;
else
mSurfaceBuffers |= BufferType.ColorSRGB;
}
if (pFormat.DepthBits > 0)
mSurfaceBuffers |= BufferType.Depth;
if (pFormat.StencilBits > 0)
mSurfaceBuffers |= BufferType.Stencil;
if (pFormat.MultisampleBits > 0)
mSurfaceBuffers |= BufferType.Multisample;
if (pFormat.DoubleBuffer == true)
mSurfaceBuffers |= BufferType.Double;
if (pFormat.StereoBuffer == true)
mSurfaceBuffers |= BufferType.Stereo;
// Store buffer definitions
switch (pFormat.ColorBits) {
case 8:
mColorType = PixelLayout.RGB8;
break;
case 16:
mColorType = PixelLayout.RGB16;
break;
case 24:
mColorType = PixelLayout.RGB24;
break;
case 32:
mColorType = PixelLayout.RGBA32;
break;
default:
throw new InvalidOperationException("invalid pixel format composed by " + pFormat.ColorBits + " bits");
}
mDepthBits = (uint)pFormat.DepthBits;
mStencilBits = (uint)pFormat.StencilBits;
mMultisampleBits = (uint)pFormat.MultisampleBits;
mDoubleBuffers = pFormat.DoubleBuffer;
mStereoBuffers = pFormat.StereoBuffer;
}
/// <summary> /// Set the device pixel format. /// </summary> /// <param name="pixelFormat"> /// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set. /// </param> public abstract void SetPixelFormat(DevicePixelFormat pixelFormat);
/// <summary> /// Set the device pixel format. /// </summary> /// <param name="pixelFormat"> /// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set. /// </param> public abstract void ChoosePixelFormat(DevicePixelFormat pixelFormat);
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
throw new ArgumentNullException("pixelFormat");
}
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
throw new ArgumentNullException("pixelFormat");
// Note: GLX does not really need a SetPixelFormat operation
// Framebuffer configuration
FBConfig = pixelFormat.XFbConfig;
// X Visual Information
XVisualInfo = pixelFormat.XVisualInfo;
}
/// <summary> /// Set the device pixel format. /// </summary> /// <param name="pixelFormat"> /// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set. /// </param> public abstract void SetPixelFormat(DevicePixelFormat pixelFormat);
/// <summary>
/// Set the device pixel format.
/// </summary>
/// <param name="pixelFormat">
/// A <see cref="DevicePixelFormat"/> that specifies the pixel format to set.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="pixelFormat"/> is null.
/// </exception>
public override void SetPixelFormat(DevicePixelFormat pixelFormat)
{
if (pixelFormat == null)
throw new ArgumentNullException("pixelFormat");
if (_PixelFormatSet == true)
throw new InvalidOperationException("pixel format already set");
Wgl.PIXELFORMATDESCRIPTOR pDescriptor = new Wgl.PIXELFORMATDESCRIPTOR();
bool res;
// Note (from MSDN): Setting the pixel format of a window more than once can lead to significant complications for the Window Manager
// and for multithread applications, so it is not allowed. An application can only set the pixel format of a window one time. Once a
// window's pixel format is set, it cannot be changed.
res = Wgl.DescribePixelFormat(DeviceContext, pixelFormat.FormatIndex, (uint)pDescriptor.nSize, ref pDescriptor);
Debug.Assert(res);
// Set choosen pixel format
res = Wgl.SetPixelFormat(DeviceContext, pixelFormat.FormatIndex, ref pDescriptor);
Debug.Assert(res);
// Unable to set pixel format again
_PixelFormatSet = true;
}